Docs Help

Terms, Icons, and Labels

Many classes have shortcut names used when creating (instantiating) a class with a configuration object. The shortcut name is referred to as an alias (or xtype if the class extends Ext.Component). The alias/xtype is listed next to the class name of applicable classes for quick reference.

Access Levels

Framework classes or their members may be specified as private or protected. Else, the class / member is public. Public, protected, and private are access descriptors used to convey how and when the class or class member should be used.

Member Types

Member Syntax

Below is an example class member that we can disect to show the syntax of a class member (the lookupComponent method as viewed from the Ext.button.Button class in this case).

lookupComponent ( item ) : Ext.Component
protected

Called when a raw config object is added to this container either during initialization of the items config, or when new items are added), or {@link #insert inserted.

This method converts the passed object into an instanced child component.

This may be overridden in subclasses when special processing needs to be applied to child creation.

Parameters

item :  Object

The config object being added.

Returns
Ext.Component

The component to be added.

Let's look at each part of the member row:

Member Flags

The API documentation uses a number of flags to further commnicate the class member's function and intent. The label may be represented by a text label, an abbreviation, or an icon.

Class Icons

- Indicates a framework class

- A singleton framework class. *See the singleton flag for more information

- A component-type framework class (any class within the Ext JS framework that extends Ext.Component)

- Indicates that the class, member, or guide is new in the currently viewed version

Member Icons

- Indicates a class member of type config

- Indicates a class member of type property

- Indicates a class member of type method

- Indicates a class member of type event

- Indicates a class member of type theme variable

- Indicates a class member of type theme mixin

- Indicates that the class, member, or guide is new in the currently viewed version

Class Member Quick-Nav Menu

Just below the class name on an API doc page is a row of buttons corresponding to the types of members owned by the current class. Each button shows a count of members by type (this count is updated as filters are applied). Clicking the button will navigate you to that member section. Hovering over the member-type button will reveal a popup menu of all members of that type for quick navigation.

Getter and Setter Methods

Getting and setter methods that correlate to a class config option will show up in the methods section as well as in the configs section of both the API doc and the member-type menus just beneath the config they work with. The getter and setter method documentation will be found in the config row for easy reference.

History Bar

Your page history is kept in localstorage and displayed (using the available real estate) just below the top title bar. By default, the only search results shown are the pages matching the product / version you're currently viewing. You can expand what is displayed by clicking on the button on the right-hand side of the history bar and choosing the "All" radio option. This will show all recent pages in the history bar for all products / versions.

Within the history config menu you will also see a listing of your recent page visits. The results are filtered by the "Current Product / Version" and "All" radio options. Clicking on the button will clear the history bar as well as the history kept in local storage.

If "All" is selected in the history config menu the checkbox option for "Show product details in the history bar" will be enabled. When checked, the product/version for each historic page will show alongside the page name in the history bar. Hovering the cursor over the page names in the history bar will also show the product/version as a tooltip.

Search and Filters

Both API docs and guides can be searched for using the search field at the top of the page.

On API doc pages there is also a filter input field that filters the member rows using the filter string. In addition to filtering by string you can filter the class members by access level, inheritance, and read only. This is done using the checkboxes at the top of the page.

The checkbox at the bottom of the API class navigation tree filters the class list to include or exclude private classes.

Clicking on an empty search field will show your last 10 searches for quick navigation.

API Doc Class Metadata

Each API doc page (with the exception of Javascript primitives pages) has a menu view of metadata relating to that class. This metadata view will have one or more of the following:

Expanding and Collapsing Examples and Class Members

Runnable examples (Fiddles) are expanded on a page by default. You can collapse and expand example code blocks individually using the arrow on the top-left of the code block. You can also toggle the collapse state of all examples using the toggle button on the top-right of the page. The toggle-all state will be remembered between page loads.

Class members are collapsed on a page by default. You can expand and collapse members using the arrow icon on the left of the member row or globally using the expand / collapse all toggle button top-right.

Desktop -vs- Mobile View

Viewing the docs on narrower screens or browsers will result in a view optimized for a smaller form factor. The primary differences between the desktop and "mobile" view are:

Viewing the Class Source

The class source can be viewed by clicking on the class name at the top of an API doc page. The source for class members can be viewed by clicking on the "view source" link on the right-hand side of the member row.

Ext JS 5.1.4


top

Ext.Component xtype: component, box

Summary

Base class for all Ext components.

The Component base class has built-in support for basic hide/show and enable/disable and size control behavior.

xtypes

Every component has a specific xtype, which is its Ext-specific type name, along with methods for checking the xtype like getXType and isXType. See the [Component Guide][../../../core_concepts/components.html] for more information on xtypes and the Component hierarchy.

Finding components

All Components are registered with the Ext.ComponentManager on construction so that they can be referenced at any time via Ext.getCmp, passing the id.

Additionally the Ext.ComponentQuery provides a CSS-selectors-like way to look up components by their xtype and many other attributes. For example the following code will find all textfield components inside component with id: 'myform':

Ext.ComponentQuery.query('#myform textfield');

Extending Ext.Component

All subclasses of Component may participate in the automated Ext component life cycle of creation, rendering and destruction which is provided by the Ext.container.Container class. Components may be added to a Container through the items config option at the time the Container is created, or they may be added dynamically via the add method.

All user-developed visual widgets that are required to participate in automated life cycle and size management should subclass Component.

See the Creating new UI controls chapter in [Component Guide][../../../core_concepts/components.html] for details on how and to either extend or augment Ext JS base classes to create custom Components.

The Ext.Component class by itself

Usually one doesn't need to instantiate the Ext.Component class. There are subclasses which implement specialized use cases, covering most application needs. However it is possible to instantiate a base Component, and it can be rendered to document, or handled by layouts as the child item of a Container:

The Component above creates its encapsulating div upon render, and use the configured HTML as content. More complex internal structure may be created using the renderTpl configuration, although to display database-derived mass data, it is recommended that an ExtJS data-backed Component such as a Ext.view.View, Ext.grid.Panel, or Ext.tree.Panel be used.

No members found using the current filters

configs

Optional Configs

activeCounter : Number
bindable bind private pri

An incrementing numeric counter indicating activation index for use by the zIndexManager to sort its stack.

Defaults to:

0

getActiveCounter : Number

Returns the value of activeCounter

Returns

Number

setActiveCounter (activeCounter)

Sets the value of activeCounter

Parameters

activeCounter :  Number

alignOnScroll : Boolean

By default, when the alignTo method is called, a floating component will scroll to keep aligned with the anchoring element if the anchoring element is part of the scroll.

If this is not necessary, and the alignTo is a one-off operation then set this config to false.

Defaults to:

true

alignTarget : String

A Component or Element by which to position this component according to the defaultAlign. Defaults to the owning Container.

Only applicable if this component is floating

Used upon first show.

Defaults to:

null

alwaysOnTop : Boolean / Number
bindable bind

A flag indicating that this component should be on the top of the z-index stack for use by the zIndexManager to sort its stack.

This may be a positive number to prioritize the ordering of multiple visible always on top components.

This may be set to a negative number to prioritize a component to the bottom of the z-index stack.

Defaults to:

false

getAlwaysOnTop : Boolean / Number

Returns the value of alwaysOnTop

Returns

Boolean / Number

setAlwaysOnTop (alwaysOnTop)

Sets the value of alwaysOnTop

Parameters

alwaysOnTop :  Boolean / Number

anchor : String

This is a layout that enables anchoring of contained elements relative to the container's dimensions. If the container is resized, all anchored items are automatically rerendered according to their anchor rules.

This class is intended to be extended or created via the layout: 'anchor' config, and should generally not need to be created directly via the new keyword.

AnchorLayout does not have any direct config options (other than inherited ones). By default, AnchorLayout will calculate anchor measurements based on the size of the container itself. However, the container using the AnchorLayout can supply an anchoring-specific config property of anchorSize.

If anchorSize is specifed, the layout will use it as a virtual container for the purposes of calculating anchor measurements based on it instead, allowing the container to be sized independently of the anchoring logic if necessary.

animateShadow : Boolean

true to animate the shadow along with the component while the component is animating. By default the shadow is hidden while the component is animating

Defaults to:

false

autoEl : String / Object

A tag name or Ext.dom.Helper spec used to create the Element which will encapsulate this Component.

You do not normally need to specify this. For the base classes Ext.Component and Ext.container.Container, this defaults to 'div'. The more complex Sencha classes use a more complex DOM structure specified by their own renderTpls.

This is intended to allow the developer to create application-specific utility Components encapsulated by different DOM elements. Example usage:

{
    xtype: 'component',
    autoEl: {
        tag: 'img',
        src: 'http://www.example.com/example.jpg'
    }
}, {
    xtype: 'component',
    autoEl: {
        tag: 'blockquote',
        html: 'autoEl is cool!'
    }
}, {
    xtype: 'container',
    autoEl: 'ul',
    cls: 'ux-unordered-list',
    items: {
        xtype: 'component',
        autoEl: 'li',
        html: 'First list item'
    }
}

Available since: 2.3.0

autoRender : Boolean / String / HTMLElement / Ext.dom.Element

This config is intended mainly for non-cfg-floating Components which may or may not be shown. Instead of using renderTo in the configuration, and rendering upon construction, this allows a Component to render itself upon first show. If cfg-floating is true, the value of this config is omitted as if it is true.

Specify as true to have this Component render to the document body upon first show.

Specify as an element, or the ID of an element to have this Component render to a specific element upon first show.

Defaults to:

false

autoScroll : Boolean
deprecated dep bindable bind

true to use overflow:'auto' on the components layout element and show scroll bars automatically when necessary, false to clip any overflowing content.

This should not be combined with overflowX or overflowY.

Defaults to:

false

Deprecated since version 5.1.0
Use scrollable instead

setAutoScroll ( scroll ) : Ext.Component
chainable ch deprecated dep

Sets the overflow on the content element of the component.

Parameters

scroll :  Boolean

True to allow the Component to auto scroll.

Returns

:Ext.Component

this

Deprecated since version 5.0.0
Use setScrollable instead

autoShow : Boolean

true to automatically show the component upon creation. This config option may only be used for floating components or components that use autoRender.

Defaults to:

false

Available since: 2.3.0

baseCls : String

The base CSS class to apply to this component's element. This will also be prepended to elements within this component like Panel's body will get a class x-panel-body. This means that if you create a subclass of Panel, and you want it to get all the Panels styling for the element and the body, you leave the baseCls x-panel and use componentCls to add specific styling for this component.

Defaults to:

'x-component'

bind : Object / String
bindable bind

Setting this config option adds or removes data bindings for other configs. For example, to bind the title config:

 var panel = Ext.create({
     xtype: 'panel',
     bind: {
         title: 'Hello {user.name}'
     }
 });

To dynamically add bindings:

 panel.setBind({
     title: 'Greetings {user.name}!'
 });

To remove bindings:

 panel.setBind({
     title: null
 });

The bind expressions are presented to Ext.app.ViewModel#bind. The ViewModel instance is determined by lookupViewModel.

Note: If bind is passed as a string, it will use the Ext.Component#property-defaultBindProperty for the binding

Defaults to:

null

getBind : Object / String

Returns the value of bind

Returns

Object / String

setBind (bind)

Sets the value of bind

Parameters

bind :  Object / String

border : Number / String / Boolean
bindable bind

Specifies the border size for this component. The border can be a single numeric value to apply to all sides or it can be a CSS style specification for each style, for example: '10 5 3 10' (top, right, bottom, left).

For components that have no border by default, setting this won't make the border appear by itself. You also need to specify border color and style:

border: 5,
style: {
    borderColor: 'red',
    borderStyle: 'solid'
}

To turn off the border, use border: false.

setBorder ( border )

Parameters

border :  String/Number

The border, see border. If a falsey value is passed the border will be removed.

childEls : Object / String[] / Object[]
bindable bind

The canonical form of childEls is an object keyed by child's property name with values that are objects with the following properties.

  • itemId - The id to combine with the Component's id that is the id of the child element.
  • id - The id of the child element.
  • leaf - Set to true to ignore content when scanning for childEls. This should be set on things like the generated content for an Ext.view.View.
  • select: A selector that will be passed to Ext.dom.Element#method-select.
  • selectNode: A selector that will be passed to Ext.dom.Element#method-selectNode.

For example:

 childEls: {
     button: true,
     buttonText: 'text',
     buttonImage: {
         itemId: 'image'
     }
 }

The above is translated into the following complete form:

 childEls: {
     button: {
         name: 'button',
         itemId: 'button'
     },
     buttonText: {
         name: 'buttonText',
         itemId: 'text'
     },
     buttonImage: {
         name: 'buttonImage',
         itemId: 'image'
     }
 }

The above can be provided as an array like so:

 childEls: [
     'button',
     { name: 'buttonText', itemId: 'text' },
     { name: 'buttonImage', itemId: 'image' }
 }

For example, a Component which renders a title and body text:

Note: childEls in the renderTpl must be referenced in a data-ref attribute. Notice in the above example that the "title" childEl is set in the renderTpl using data-ref="title".

When using select, the property will be an instance of Ext.CompositeElement. In all other cases, the property will be an Ext.dom.Element or null if not found.

Care should be taken when using select or selectNode to find child elements. The following issues should be considered:

  • Performance: using selectors can be 10x slower than id lookup.
  • Over-selecting: selectors are applied after the DOM elements for all children have been rendered, so selectors can match elements from child components (including nested versions of the same component) accidentally.

This above issues are most important when using select since it returns multiple elements.

Defaults to:

{
    frameTable: {
        frame: true
    },
    frameTL: {
        frame: 'tl'
    },
    frameTC: {
        frame: 'tc'
    },
    frameTR: {
        frame: 'tr'
    },
    frameML: {
        frame: 'ml'
    },
    frameBody: {
        frame: 'mc'
    },
    frameMR: {
        frame: 'mr'
    },
    frameBL: {
        frame: 'bl'
    },
    frameBC: {
        frame: 'bc'
    },
    frameBR: {
        frame: 'br'
    }
}

getChildEls : Object / String[] / Object[]

Returns the value of childEls

Returns

Object / String[] / Object[]

setChildEls (childEls)

Sets the value of childEls

Parameters

childEls :  Object / String[] / Object[]

cls : String / String[]

An optional extra CSS class that will be added to this component's Element. The value can be a string, a list of strings separated by spaces, or an array of strings. This can be useful for adding customized styles to the component or any of its children using standard CSS rules.

Defaults to:

''

Available since: 1.1.0

columnWidth : Number

Defines the column width inside Ext.layout.container.Column.

The columnWidth property is always evaluated as a percentage and must be a decimal value greater than 0 and less than 1 (e.g., .25). See the description at the top of Ext.layout.container.Column for additional usage details when combining width and columnWidth configs within the layout.

componentCls : String

CSS Class to be added to a components root level element to give distinction to it via styling.

componentLayout : String / Object

The sizing and positioning of a Component's internal Elements is the responsibility of the Component's layout manager which sizes a Component's internal structure in response to the Component being sized.

Generally, developers will not use this configuration as all provided Components which need their internal elements sizing (Such as Ext.form.field.Base) come with their own componentLayout managers.

The Ext.layout.container.Auto will be used on instances of the base Ext.Component class which simply sizes the Component's encapsulating element to the height and width specified in the setSize method.

Defaults to:

'autocomponent'

constrain : Boolean

True to constrain this Components within its containing element, false to allow it to fall outside of its containing element. By default this Component will be rendered to document.body. To render and constrain this Component within another element specify renderTo.

Defaults to:

false

constraintInsets : Object / String

An object or a string (in TRBL order) specifying insets from the configured constrain region within which this component must be constrained when positioning or sizing. example:

constraintInsets: '10 10 10 10' // Constrain with 10px insets from parent

constrainTo : Ext.util.Region / Ext.dom.Element

A Ext.util.Region (or an element from which a Region measurement will be read) which is used to constrain the component. Only applies when the component is floating.

contentEl : String

Specify an existing HTML element, or the id of an existing HTML element to use as the content for this component.

This config option is used to take an existing HTML element and place it in the layout element of a new component (it simply moves the specified DOM element after the Component is rendered to use as the content.

Notes:

The specified HTML element is appended to the layout element of the component after any configured HTML has been inserted, and so the document will not contain this element at the time the event-render event is fired.

The specified HTML element used will not participate in any layout scheme that the Component may use. It is just HTML. Layouts operate on child items.

Add either the x-hidden or the x-hidden-display CSS class to prevent a brief flicker of the content before it is rendered to the panel.

Available since: 3.4.0

controller : String / Object / Ext.app.ViewController
bindable bind

A string alias, a configuration object or an instance of a ViewController for this container. Sample usage:

Ext.define('MyApp.UserController', {
    alias: 'controller.user'
});

Ext.define('UserContainer', {
    extend: 'Ext.container.container',
    controller: 'user'
});
// Or
Ext.define('UserContainer', {
    extend: 'Ext.container.container',
    controller: {
        type: 'user',
        someConfig: true
    }
});

// Can also instance at runtime
var ctrl = new MyApp.UserController();
var view = new UserContainer({
    controller: ctrl
});

Defaults to:

null

getController Ext.app.ViewController

Returns the Ext.app.ViewController instance associated with this component via the controller config or setController method.

Returns

:Ext.app.ViewController

Returns this component's ViewController or null if one was not configured

setController (controller)

Sets the value of controller

Parameters

controller :  String / Object / Ext.app.ViewController

data : Object
bindable bind

The initial set of data to apply to the tpl to update the content area of the Component.

Defaults to:

null

Available since: 3.4.0

getData : Object

Returns the value of data

Returns

Object

setData (data)

Sets the value of data

Parameters

data :  Object

defaultAlign : String

The default Ext.dom.Element#getAlignToXY anchor position value for this component relative to its alignTarget (which defaults to its owning Container).

Only applicable if this component is floating

Used upon first show.

Defaults to:

"c-c"

defaultListenerScope : Boolean
bindable bind

If true, this component will be the default scope (this pointer) for events specified with string names so that the scope can be dynamically resolved. The component will automatically become the defaultListenerScope if a controller is specified.

See the introductory docs for Ext.container.Container for some sample usages.

NOTE: This value can only be reliably set at construction time. Setting it after that time may not correctly rewire all of the potentially effected listeners.

Defaults to:

false

getDefaultListenerScope : Boolean

Returns the value of defaultListenerScope

Returns

Boolean

setDefaultListenerScope (defaultListenerScope)

Sets the value of defaultListenerScope

Parameters

defaultListenerScope :  Boolean

disabled : Boolean
bindable bind

true to disable the component.

Defaults to:

false

Available since: 2.3.0

setDisabled ( disabled )
chainable ch

Enable or disable the component.

Parameters

disabled :  Boolean

true to disable.

disabledCls : String

CSS class to add when the Component is disabled.

Defaults to:

'x-item-disabled'

dock : 'top' / 'bottom' / 'left' / 'right'
bindable bind

The side of the Ext.panel.Panel where this component is to be docked when specified in the panel's dockedItems config.

Possible values are:

  • top
  • bottom
  • left
  • right

setDock ( dock ) : Ext.Component
chainable ch

Sets the dock position of this component in its parent panel. Note that this only has effect if this item is part of the dockedItems collection of a parent that has a DockLayout (note that any Panel has a DockLayout by default)

Parameters

dock :  Object

The dock position.

Returns

:Ext.Component

this

draggable : Boolean / Object

Specify as true to make a floating Component draggable using the Component's encapsulating element as the drag handle.

This may also be specified as a config object for the Ext.util.ComponentDragger which is instantiated to perform dragging.

For example to create a Component which may only be dragged around using a certain internal element as the drag handle, use the delegate option:

new Ext.Component({
    constrain: true,
    floating: true,
    style: {
        backgroundColor: '#fff',
        border: '1px solid black'
    },
    html: '<h1 style="cursor:move">The title</h1><p>The content</p>',
    draggable: {
        delegate: 'h1'
    }
}).show();

Defaults to:

false

fixed : Boolean

Configure as true to have this Component fixed at its X, Y coordinates in the browser viewport, immune to scrolling the document.

Defaults to:

false

flex : Number
bindable bind

Flex may be applied to child items of a box layout (Ext.layout.container.VBox or Ext.layout.container.HBox). Each child item with a flex property will fill space (horizontally in hbox, vertically in vbox) according to that item's relative flex value compared to the sum of all items with a flex value specified.

Any child items that have either a flex of 0 or undefined will not be 'flexed' (the initial size will not be changed).

setFlex ( flex )
private pri

Sets the flex property of this component. Only applicable when this component is an item of a box layout

Parameters

flex :  Number

floating : Boolean

Specify as true to float the Component outside of the document flow using CSS absolute positioning.

Components such as Ext.window.Windows and Ext.menu.Menus are floating by default.

Floating Components that are programmatically rendered will register themselves with the global Ext.WindowManager

Floating Components as child items of a Container

A floating Component may be used as a child item of a Container. This just allows the floating Component to seek a ZIndexManager by examining the ownerCt chain.

When configured as floating, Components acquire, at render time, a Ext.ZIndexManager which manages a stack of related floating Components. The ZIndexManager sorts its stack according to an incrementing access counter and the alwaysOnTop config when the Component's toFront method is called.

The ZIndexManager is found by traversing up the ownerCt chain to find an ancestor which itself is floating. This is so that descendant floating Components of floating Containers (Such as a ComboBox dropdown within a Window) can have its zIndex managed relative to any siblings, but always above that floating ancestor Container.

If no floating ancestor is found, a floating Component registers itself with the default Ext.WindowManager.

Floating components do not participate in the Container's layout. Because of this, they are not rendered until you explicitly method-show them.

After rendering, the ownerCt reference is deleted, and the floatParent property is set to the found floating ancestor Container. If no floating ancestor Container was found the floatParent property will not be set.

Defaults to:

false

focusCls : String

CSS class that will be added to focused Component, and removed when Component blurs.

Defaults to:

'x-focus'

focusOnToFront : Boolean

Specifies whether the floated component should be automatically focused when it is brought to the front.

Defaults to:

true

formBind : Boolean

When inside FormPanel, any component configured with formBind: true will be enabled/disabled depending on the validity state of the form. See Ext.form.Panel for more information and example.

Defaults to:

false

frame : Boolean

Specify as true to have the Component inject framing elements within the Component at render time to provide a graphical rounded frame around the Component content.

This is only necessary when running on outdated, or non standard-compliant browsers such as Microsoft's Internet Explorer prior to version 9 which do not support rounded corners natively.

The extra space taken up by this framing is available from the read only property frameSize.

height : Number / String
bindable bind

The height of this component. A numeric value will be interpreted as the number of pixels; a string value will be treated as a CSS value with units.

getHeight Number

Gets the current height of the component's underlying element.

Returns

:Number

setHeight ( height ) : Ext.Component

Sets the height of the component. This method fires the resize event.

Parameters

height :  Number

The new height to set. This may be one of:

  • A Number specifying the new height in pixels.
  • A String used to set the CSS height style.
  • undefined to leave the height unchanged.
  • null to clear the height.

Returns

:Ext.Component

this

hidden : Boolean
bindable bind

true to hide the component.

Defaults to:

false

Available since: 2.3.0

setHidden ( hidden ) : Ext.Component

Sets the hidden state of this component. This is basically the same as setVisible but the boolean parameter has the opposite meaning.

Parameters

hidden :  Boolean

Returns

:Ext.Component

hideMode : String

A String which specifies how this Component's encapsulating DOM element will be hidden. Values may be:

  • 'display' : The Component will be hidden using the display: none style.
  • 'visibility' : The Component will be hidden using the visibility: hidden style.
  • 'offsets' : The Component will be hidden by absolutely positioning it out of the visible area of the document. This is useful when a hidden Component must maintain measurable dimensions. Hiding using display results in a Component having zero dimensions.

Defaults to:

'display'

Available since: 1.1.0

html : String / Object

An HTML fragment, or a Ext.dom.Helper specification to use as the layout element content. The HTML content is added after the component is rendered, so the document will not contain this HTML at the time the event-render event is fired. This content is inserted into the body before any configured contentEl is appended.

Defaults to:

''

Available since: 3.4.0

id : String

The unique id of this component instance.

Use of this config should be considered carefully as this value must be unique across all existing components. Components created with an id may be accessed globally using Ext.getCmp.

Instead of using assigned ids, consider a reference config and a ViewController to respond to events and perform processing upon this Component.

Alternatively, itemId and Ext.ComponentQuery can be used to perform selector-based searching for Components analogous to DOM querying. The Ext.container.Container class contains several helpful shortcut methods to query its descendant Components by selector.

Note that this id will also be used as the element id for the containing HTML element that is rendered to the page for this component. This allows you to write id-based CSS rules to style the specific instance of this component uniquely, and also to select sub-elements using this component's id as the parent.

Defaults to an auto-assigned id.

Note: Valid identifiers start with a letter or underscore and are followed by (optional) additional letters, underscores, digits or hyphens.

Available since: 1.1.0

getId String

Retrieves the id of this component. Will auto-generate an id if one has not already been set.

Returns

:String

itemId : String

The unique id of this component instance within its container. See also the reference config.

An itemId can be used as an alternative way to get a reference to a component when no object reference is available. Instead of using an id with getCmp, use itemId with getComponent which will retrieve itemId's or id's. Since itemId's are an index to the container's internal collection, the itemId is scoped locally to the container -- avoiding potential conflicts with Ext.ComponentManager, which requires a unique id value.

var c = new Ext.panel.Panel({ //
    height: 300,
    renderTo: document.body,
    layout: 'auto',
    items: [
        {
            itemId: 'p1',
            title: 'Panel 1',
            height: 150
        },
        {
            itemId: 'p2',
            title: 'Panel 2',
            height: 150
        }
    ]
})
p1 = c.getComponent('p1'); // not the same as Ext.getCmp()
p2 = p1.ownerCt.getComponent('p2'); // reference via a sibling

Also see id, Ext.container.Container#query, Ext.container.Container#down and Ext.container.Container#child.

Note: Valid identifiers start with a letter or underscore and are followed by (optional) additional letters, underscores, digits or hyphens.

Note: to access the container of an item see ownerCt.

Available since: 3.4.0

getItemId String

Returns the value of itemId assigned to this component, or when that is not set, returns the value of id.

Returns

:String

liquidLayout : Boolean

Components that achieve their internal layout results using solely CSS with no JS intervention must set this to true. This allows the component to opt out of the layout run when used inside certain container layouts such as Ext.layout.container.Form and Ext.layout.container.Auto resulting in a performance gain. The following components currently use liquid layout (liquidLayout: true):

It is important to keep in mind that components using liquidLayout do not fire the following events:

In addition liquidLayout components do not call the following template methods:

Any component that needs to fire these events or to have these methods called during its life cycle needs to set liquidLayout to false. The following example demonstrates how to enable the resize event for a Ext.form.field.TextArea:

Use caution when setting liquidLayout to false as it carries a performance penalty since it means the layout system must perform expensive DOM reads to determine the Component's size.

Defaults to:

false

listeners : Object
bindable bind

A config object containing one or more event handlers to be added to this object during initialization. This should be a valid listeners config object as specified in the addListener example for attaching multiple handlers at once.

DOM events from Ext JS Ext.Component

While some Ext JS Component classes export selected DOM events (e.g. "click", "mouseover" etc), this is usually only done when extra value can be added. For example the Ext.view.View's itemclick event passing the node clicked on. To access DOM events directly from a child element of a Component, we need to specify the element option to identify the Component property to add a DOM listener to:

new Ext.panel.Panel({
    width: 400,
    height: 200,
    dockedItems: [{
        xtype: 'toolbar'
    }],
    listeners: {
        click: {
            element: 'el', //bind to the underlying el property on the panel
            fn: function(){ console.log('click el'); }
        },
        dblclick: {
            element: 'body', //bind to the underlying body property on the panel
            fn: function(){ console.log('dblclick body'); }
        }
    }
});

setListeners ( listeners )

An alias for addListener. In versions prior to 5.1, listeners had a generated setter which could be called to add listeners. In 5.1 the listeners config is not processed using the config system and has no generated setter, so this method is provided for backward compatibility. The preferred way of adding listeners is to use the on method.

Parameters

listeners :  Object

The listeners

liveDrag : Boolean

True to drag the component itself. Else a lightweight version of the component will be shown (using the component's ghost() method).

Note: This config is only relevant when used with dragging implemented via Ext.util.ComponentDragger.

Defaults to:

false

loader : Ext.ComponentLoader / Object

A configuration object or an instance of a Ext.ComponentLoader to load remote content for this Component.

Ext.create('Ext.Component', {
    loader: {
        url: 'content.html',
        autoLoad: true
    },
    renderTo: Ext.getBody()
});

getLoader Ext.ComponentLoader

Gets the Ext.ComponentLoader for this Component.

Returns

:Ext.ComponentLoader

The loader instance, null if it doesn't exist.

margin : Number / String
bindable bind

Specifies the margin for this component. The margin can be a single numeric value to apply to all sides or it can be a CSS style specification for each style, for example: '10 5 3 10' (top, right, bottom, left).

setMargin ( margin )

Sets the margin on the target element.

Parameters

margin :  Number/String

The margin to set. See the margin config.

maskElement : String

Related to the cfg-childEls configuration which specifies named properties which correspond to component sub-elements.

The name of the element property in this component to mask when masked by a LoadMask.

Defaults to null to indicate that Components cannot by default contain a LoadMask, and that any LoadMask should be rendered into the document body.

For example, Panels use "el" to indicate that the whole panel should be masked. This could be configured to be "body" so that only the body is masked and toolbars and the header are still mouse-accessible.

Defaults to:

null

maxHeight : Number
bindable bind

The maximum value in pixels which this Component will set its height to.

Warning: This will override any size management applied by layout managers.

Defaults to:

null

getMaxHeight : Number

Returns the value of maxHeight

Returns

Number

setMaxHeight (maxHeight)

Sets the value of maxHeight

Parameters

maxHeight :  Number

maxWidth : Number
bindable bind

The maximum value in pixels which this Component will set its width to.

Warning: This will override any size management applied by layout managers.

Defaults to:

null

getMaxWidth : Number

Returns the value of maxWidth

Returns

Number

setMaxWidth (maxWidth)

Sets the value of maxWidth

Parameters

maxWidth :  Number

minHeight : Number
bindable bind

The minimum value in pixels which this Component will set its height to.

Warning: This will override any size management applied by layout managers.

Defaults to:

null

getMinHeight : Number

Returns the value of minHeight

Returns

Number

setMinHeight (minHeight)

Sets the value of minHeight

Parameters

minHeight :  Number

minWidth : Number
bindable bind

The minimum value in pixels which this Component will set its width to.

Warning: This will override any size management applied by layout managers.

Defaults to:

null

getMinWidth : Number

Returns the value of minWidth

Returns

Number

setMinWidth (minWidth)

Sets the value of minWidth

Parameters

minWidth :  Number

modal : Boolean

True to make the floated component modal and mask everything behind it when displayed, false to display it without restricting access to other UI elements.

Defaults to:

false

modelValidation : Boolean

This config enables binding to your Ext.data.Model#validators. This is only processed by form fields (e.g., Ext.form.field.Text) at present, but this setting is inherited and so can be set on a parent container.

When set to true by a component or not set by a component but inherited from an ancestor container, Ext.data.Validation records are used to automatically bind validation results for any form field to which a value is bound.

While this config can be set arbitrarily high in the component hierarchy, doing so can create a lot overhead if most of your form fields do not actually rely on validators in your data model.

Using this setting for a form that is bound to an Ext.data.Model might look like this:

 {
     xtype: 'panel',
     modelValidation: true,
     items: [{
         xtype: 'textfield',
         bind: '{theUser.firstName}'
     },{
         xtype: 'textfield',
         bind: '{theUser.lastName}'
     },{
         xtype: 'textfield',
         bind: '{theUser.phoneNumber}'
     },{
         xtype: 'textfield',
         bind: '{theUser.email}'
     }]
 }

The above is equivalent to the following manual binding of validation:

 {
     xtype: 'panel',
     items: [{
         xtype: 'textfield',
         bind: {
             value:      '{theUser.firstName}'
             validation: '{theUser.validation.firstName}'
         }
     },{
         xtype: 'textfield',
         bind: {
             value:      '{theUser.lastName}'
             validation: '{theUser.validation.lastName}'
         }
     },{
         xtype: 'textfield',
         bind: {
             value:      '{theUser.phoneNumber}'
             validation: '{theUser.validation.phoneNumber}'
         }
     },{
         xtype: 'textfield',
         bind: {
             value:      '{theUser.email}'
             validation: '{theUser.validation.email}'
         }
     }]
 }

Notice that "validation" is a pseudo-association defined for all entities. See Ext.data.Model#getValidation for further details.

overCls : String

An optional extra CSS class that will be added to this component's Element when the mouse moves over the Element, and removed when the mouse moves out. This can be useful for adding customized 'active' or 'hover' styles to the component or any of its children using standard CSS rules.

Defaults to:

''

Available since: 2.3.0

overflowX : String
deprecated dep

Possible values are:

  • 'auto' to enable automatic horizontal scrollbar (Style overflow-x: 'auto').
  • 'scroll' to always enable horizontal scrollbar (Style overflow-x: 'scroll').

The default is overflow-x: 'hidden'. This should not be combined with autoScroll.

Deprecated since version 5.1.0
Use scrollable instead

overflowY : String
deprecated dep

Possible values are:

  • 'auto' to enable automatic vertical scrollbar (Style overflow-y: 'auto').
  • 'scroll' to always enable vertical scrollbar (Style overflow-y: 'scroll').

The default is overflow-y: 'hidden'. This should not be combined with autoScroll.

Deprecated since version 5.1.0
Use scrollable instead

padding : Number / String

Specifies the padding for this component. The padding can be a single numeric value to apply to all sides or it can be a CSS style specification for each style, for example: '10 5 3 10' (top, right, bottom, left).

plugins : Ext.plugin.Abstract[] / Ext.plugin.Abstract / Object[] / Object / Ext.enums.Plugin[] / Ext.enums.Plugin

An array of plugins to be added to this component. Can also be just a single plugin instead of array.

Plugins provide custom functionality for a component. The only requirement for a valid plugin is that it contain an init method that accepts a reference of type Ext.Component. When a component is created, if any plugins are available, the component will call the init method on each plugin, passing a reference to itself. Each plugin can then call methods or respond to events on the component as needed to provide its functionality.

Plugins can be added to component by either directly referencing the plugin instance:

plugins: [Ext.create('Ext.grid.plugin.CellEditing', {clicksToEdit: 1})],

By using config object with ptype:

plugins: {ptype: 'cellediting', clicksToEdit: 1},

Or with just a ptype:

plugins: ['cellediting', 'gridviewdragdrop'],

See Ext.enums.Plugin for list of all ptypes.

Available since: 2.3.0

getPlugins
private pri

Returns an array of current fully constructed plugin instances.

publishes : String / String[] / Object
bindable bind

One or more names of config properties that this component should publish to its ViewModel. Generally speaking, only properties defined in a class config block (including ancestor config blocks and mixins) are eligible for publishing to the viewModel. Some components override this and publish their most useful configs by default.

Note: We'll discuss publishing properties not found in the config block below.

Values determined to be invalid by component (often form fields and model validations) will not be published to the ViewModel.

This config uses the cfg-reference to determine the name of the data object to place in the ViewModel. If reference is not set then this config is ignored.

By using this config and cfg-reference you can bind configs between components. For example:

 ...
     items: [{
         xtype: 'textfield',
         reference: 'somefield',  // component's name in the ViewModel
         publishes: 'value' // value is not published by default
     },{
         ...
     },{
         xtype: 'displayfield',
         bind: 'You have entered "{somefield.value}"'
     }]
 ...

Classes must provide this config as an Object:

 Ext.define('App.foo.Bar', {
     publishes: {
         foo: true,
         bar: true
     }
 });

This is required for the config system to properly merge values from derived classes.

For instances this value can be specified as a value as show above or an array or object as follows:

 {
     xtype: 'textfield',
     reference: 'somefield',
     publishes: [
         'value',
         'rawValue',
         'dirty'
     ]
 }

 // This achieves the same result as the above array form.
 {
     xtype: 'textfield',
     reference: 'somefield',
     publishes: {
         value: true,
         rawValue: true,
         dirty: true
     }
 }

In some cases, users may want to publish a property to the viewModel that is not found in a class config block. In these situations, you may utilize publishState if the property has a setter method. Let's use setFieldLabel as an example:

  setFieldLabel: function(fieldLabel) {
      this.callParent(arguments);
      this.publishState('fieldLabel', fieldLabel);
  }

With the above chunk of code, fieldLabel may now be published to the viewModel.

Defaults to:

null

Available since: 5.0.0

getPublishes : String / String[] / Object

Returns the value of publishes

Returns

String / String[] / Object

setPublishes (publishes)

Sets the value of publishes

Parameters

publishes :  String / String[] / Object

reference : String
bindable bind

Specifies a name for this component inside its component hierarchy. This name must be unique within its view or its Ext.app.ViewController. See the documentation in Ext.container.Container for more information about references.

Note: Valid identifiers start with a letter or underscore and are followed by zero or more additional letters, underscores or digits. References are case sensitive.

Defaults to:

null

getReference : String

Returns the value of reference

Returns

String

setReference (reference)

Sets the value of reference

Parameters

reference :  String

region : "north" / "south" / "east" / "west" / "center"

Defines the region inside Ext.layout.container.Border.

Possible values:

  • north - Positions component at top.
  • south - Positions component at bottom.
  • east - Positions component at right.
  • west - Positions component at left.
  • center - Positions component at the remaining space. There must be a component with region: "center" in every border layout.

Defaults to:

undefined

getRegion Ext.util.Region

Returns a region object that defines the area of this element.

Returns

:Ext.util.Region

A Region containing "top, left, bottom, right" properties.

renderData : Object

The data used by renderTpl in addition to the following property values of the component:

  • id
  • ui
  • uiCls
  • baseCls
  • componentCls
  • frame

See renderSelectors and cfg-childEls for usage examples.

renderSelectors : Object
deprecated dep

An object containing properties specifying CSS selectors which identify child elements created by the render process.

After the Component's internal structure is rendered according to the renderTpl, this object is iterated through, and the found Elements are added as properties to the Component using the renderSelector property name.

For example, a Component which renders a title and description into its element:

 Ext.create('Ext.Component', {
     renderTo: Ext.getBody(),
     renderTpl: [
         '<h1 class="title">{title}</h1>',
         '<p>{desc}</p>'
     ],
     renderData: {
         title: "Error",
         desc: "Something went wrong"
     },
     renderSelectors: {
         titleEl: 'h1.title',
         descEl: 'p'
     },
     listeners: {
         afterrender: function(cmp){
             // After rendering the component will have a titleEl and descEl properties
             cmp.titleEl.setStyle({color: "red"});
         }
     }
 });

The use of renderSelectors is deprecated (for performance reasons). The above code should be refactored into something like this:

 Ext.create('Ext.Component', {
     renderTo: Ext.getBody(),
     renderTpl: [
         '<h1 class="title" id="{id}-titleEl" data-ref="titleEl">{title}</h1>',
         '<p id="{id}-descEl" data-ref="descEl">{desc}</p>'
     ],
     renderData: {
         title: "Error",
         desc: "Something went wrong"
     },
     childEls: [
         'titleEl',
         'descEl'
     ]
 });

To use childEls yet retain the use of selectors (which remains as expensive as renderSelectors):

 Ext.create('Ext.Component', {
     renderTo: Ext.getBody(),
     renderTpl: [
         '<h1 class="title">{title}</h1>',
         '<p>{desc}</p>'
     ],
     renderData: {
         title: "Error",
         desc: "Something went wrong"
     },
     childEls: {
         titleEl: { selectNode: 'h1.title' },
         descEl: { selectNode: 'p' }
     }
 });

Deprecated since version 5.0
Use cfg-childEls instead.

renderTo : String / HTMLElement / Ext.dom.Element

Specify the id of the element, a DOM element or an existing Element that this component will be rendered into.

Notes:

Do not use this option if the Component is to be a child item of a Ext.container.Container. It is the responsibility of the Ext.container.Container's layout manager to render and manage its child items.

When using this config, a call to render() is not required.

See also: method-render.

Available since: 2.3.0

renderTpl : Ext.XTemplate / String / String[]
protected pro

An Ext.XTemplate used to create the internal structure inside this Component's encapsulating Element.

You do not normally need to specify this. For the base classes Ext.Component and Ext.container.Container, this defaults to null which means that they will be initially rendered with no internal structure; they render their Element empty. The more specialized Ext JS and Sencha Touch classes which use a more complex DOM structure, provide their own template definitions.

This is intended to allow the developer to create application-specific utility Components with customized internal structure.

Upon rendering, any created child elements may be automatically imported into object properties using the renderSelectors and cfg-childEls options.

Defaults to:

[
    '<tpl if="renderScroller">',
    '<div class="{scrollerCls}" style="{%this.renderPadding(out, values)%}">',
    '</tpl>',
    '{%this.renderContent(out,values)%}',
    '<tpl if="renderScroller"></div></tpl>'
]

resizable : Boolean / Object

Specify as true to apply a Ext.resizer.Resizer to this Component after rendering.

May also be specified as a config object to be passed to the constructor of Ext.resizer.Resizer to override any defaults. By default the Component passes its minimum and maximum size, and uses Ext.resizer.Resizer#dynamic: false

resizeHandles : String

A valid Ext.resizer.Resizer handles config string. Only applies when resizable = true.

Defaults to:

'all'

saveDelay : Number

A buffer to be applied if many state events are fired within a short period.

Defaults to:

100

scrollable : Boolean / String / Object
bindable bind

Configuration options to make this Component scrollable. Acceptable values are:

  • true to enable auto scrolling.
  • false (or null) to disable scrolling - this is the default.
  • x or horizontal to enable horizontal scrolling only
  • y or vertical to enable vertical scrolling only

Also accepts a configuration object for a Ext.scroll.Scroller if if advanced configuration is needed.

The getter for this config returns the Ext.scroll.Scroller instance. You can use the Scroller API to read or manipulate the scroll position:

// scrolls the component to 5 on the x axis and 10 on the y axis
component.getScrollable().scrollTo(5, 10);

Defaults to:

null

getScrollable : Boolean / String / Object

Returns the value of scrollable

Returns

Boolean / String / Object

setScrollable (scrollable)

Sets the value of scrollable

Parameters

scrollable :  Boolean / String / Object

session : Boolean / Object / Ext.data.Session
bindable bind

If provided this creates a new Session instance for this component. If this is a Container, this will then be inherited by all child components.

To create a new session you can specify true:

 Ext.create({
     xtype: 'viewport',
     session: true,

     items: [{
         ...
     }]
 });

Alternatively, a config object can be provided:

 Ext.create({
     xtype: 'viewport',
     session: {
         ...
     },

     items: [{
         ...
     }]
 });

Defaults to:

null

getSession : Boolean / Object / Ext.data.Session

Returns the value of session

Returns

Boolean / Object / Ext.data.Session

setSession (session)

Sets the value of session

Parameters

session :  Boolean / Object / Ext.data.Session

shadow : String / Boolean

Specifies whether the floating component should be given a shadow. Set to true to automatically create an Ext.Shadow, or a string indicating the shadow's display Ext.Shadow#mode. Set to false to disable the shadow.

Defaults to:

'sides'

shadowOffset : Number

Number of pixels to offset the shadow.

shim : Boolean

true to enable an iframe shim for this Component to keep windowed objects from showing through.

shrinkWrap : Boolean / Number

The possible values for shrinkWrap are:

  • 0 (or false): Neither width nor height depend on content.
  • 1: Width depends on content (shrink wraps), but height does not.
  • 2: Height depends on content (shrink wraps), but width does not.
  • 3 (or true): Both width and height depend on content (shrink wrap).

In CSS terms, shrink-wrap width is analogous to an inline-block element as opposed to a block-level element.

Non-Panel Components

The shrinkWrap config is a class-level config and should be used when defining a subclass. It is not intended to be set as a config on instances of a given component.

For non-Panel components, shrinkWrap is a descriptive config only. It should be set when defining your own custom class including the DOM elements used to construct the component. The shrinkWrap property does not itself apply styling on the component elements. Rather, it should describe the CSS styling you've applied to your custom component (refer to the numeric matrix above).

When a component is owned by a container the layout of that container will inspect the component's shrinkWrap property during layout. The layout then uses the content-wrapping policy described by shrinkWrap to correctly size and position the container's child items.

Defaults to:

2

stateEvents : String[]

An array of events that, when fired, should trigger this object to save its state. Defaults to none. stateEvents may be any type of event supported by this object, including browser or custom events (e.g., ['click', 'customerchange']).

See Ext.state.Stateful#cfg-stateful for an explanation of saving and restoring object state. By default the following stateEvents are added:

stateful : Boolean

A flag which causes the object to attempt to restore the state of internal properties from a saved state on startup. The object must have a stateId for state to be managed.

Auto-generated ids are not guaranteed to be stable across page loads and cannot be relied upon to save and restore the same state for a object.

For state saving to work, the state manager's provider must have been set to an implementation of Ext.state.Provider which overrides the set and get methods to save and recall name/value pairs. A built-in implementation, Ext.state.CookieProvider is available.

To set the state provider for the current page:

Ext.state.Manager.setProvider(new Ext.state.CookieProvider({
    expires: new Date(new Date().getTime()+(1000*60*60*24*7)) //7 days from now
}));

A stateful object attempts to save state when one of the events listed in the stateEvents configuration fires.

To save state, a stateful object first serializes its state by calling getState.

The Component base class implements getState to save its width and height within the state only if they were initially configured, and have changed from the configured value.

The Panel class saves its collapsed state in addition to that.

The Grid class saves its column state and store state (sorters and filters and grouper) in addition to its superclass state.

If there is more application state to be save, the developer must provide an implementation which first calls the superclass method to inherit the above behaviour, and then injects new properties into the returned object.

The value yielded by getState is passed to Ext.state.Manager#set which uses the configured Ext.state.Provider to save the object keyed by the stateId.

During construction, a stateful object attempts to restore its state by calling Ext.state.Manager#get passing the stateId

The resulting object is passed to applyState*. The default implementation of applyState simply copies properties into the object, but a developer may override this to support restoration of more complex application state.

You can perform extra processing on state save and restore by attaching handlers to the beforestaterestore, staterestore, beforestatesave and statesave events.

Defaults to:

false

stateId : String

The unique id for this object to use for state management purposes.

See stateful for an explanation of saving and restoring state.

getStateId String
private pri

Gets the state id for this object.

Returns

:String

The 'stateId' or the implicit 'id' specified by component configuration.

style : String / Object
bindable bind

A custom style specification to be applied to this component's Element. Should be a valid argument to Ext.dom.Element#applyStyles.

new Ext.panel.Panel({
    title: 'Some Title',
    renderTo: Ext.getBody(),
    width: 400, height: 300,
    layout: 'form',
    items: [{
        xtype: 'textarea',
        style: {
            width: '95%',
            marginBottom: '10px'
        }
    },
    new Ext.button.Button({
        text: 'Send',
        minWidth: '100',
        style: {
            marginBottom: '10px'
        }
    })
    ]
});

Available since: 1.1.0

setStyle ( property, [value] ) : Ext.Component
chainable ch

Sets the style for this Component's primary element.

Styles should be a valid DOM element style property. Valid style property names (along with the supported CSS version for each)

var name = Ext.create({
    xtype: 'component',
    renderTo: Ext.getBody(),
    html: 'Phineas Flynn'
});

// two-param syntax
name.setStyle('color', 'white');

// single-param syntax
name.setStyle({
    fontWeight: 'bold',
    backgroundColor: 'gray',
    padding: '10px'
});

Parameters

property :  String/Object

The style property to be set, or an object of multiple styles.

value :  String (optional)

The value to apply to the given property, or null if an object was passed.

Returns

:Ext.Component

this

tabIndex : Number
bindable bind

DOM tabIndex attribute for this Focusable

getTabIndex Number

Return the actual tabIndex for this Focusable.

Returns

:Number

tabIndex attribute value

setTabIndex ( newTabIndex )

Set the tabIndex property for this Focusable. If the focusEl is avalable, set tabIndex attribute on it, too.

Parameters

newTabIndex :  Number

new tabIndex to set

toFrontOnShow : Boolean

True to automatically call toFront when the method-show method is called on an already visible, floating component.

Defaults to:

true

tpl : Ext.XTemplate / Ext.Template / String / String[]

An Ext.Template, Ext.XTemplate or an array of strings to form an Ext.XTemplate. Used in conjunction with the data and tplWriteMode configurations.

Available since: 3.4.0

getTpl ( name )
private pri

Parameters

name :  Object

tplWriteMode : String

The Ext.(X)Template method to use when updating the content area of the Component. See Ext.XTemplate#overwrite for information on default mode.

Defaults to:

'overwrite'

Available since: 3.4.0

twoWayBindable : String / String[] / Object
bindable bind

This object holds a map of config properties that will update their binding as they are modified. For example, value is a key added by form fields. The form of this config is the same as publishes.

This config is defined so that updaters are not created and added for all bound properties since most cannot be modified by the end-user and hence are not appropriate for two-way binding.

Defaults to:

null

getTwoWayBindable : String / String[] / Object

Returns the value of twoWayBindable

Returns

String / String[] / Object

setTwoWayBindable (twoWayBindable)

Sets the value of twoWayBindable

Parameters

twoWayBindable :  String / String[] / Object

ui : String
bindable bind

A UI style for a component.

Defaults to:

'default'

setUI ( ui )

Sets the UI for the component. This will remove any existing UIs on the component. It will also loop through any uiCls set on the component and rename them so they include the new UI.

Parameters

ui :  String

The new UI for the component.

uiCls : String[]
private pri

An array of of classNames which are currently applied to this component.

Defaults to:

[]

viewModel : String / Object / Ext.app.ViewModel
bindable bind

The ViewModel is a data provider for this component and its children. The data contained in the ViewModel is typically used by adding bind configs to the components that want present or edit this data.

When set, the ViewModel is created and links to any inherited viewModel instance from an ancestor container as the "parent". The ViewModel hierarchy, once established, only supports creation or destruction of children. The parent of a ViewModel cannot be changed on the fly.

If this is a root-level ViewModel, the data model connection is made to this component's associated Ext.data.Session. This is determined by calling getInheritedSession.

Defaults to:

null

getViewModel : String / Object / Ext.app.ViewModel

Returns the value of viewModel

Returns

String / Object / Ext.app.ViewModel

setViewModel (viewModel)

Sets the value of viewModel

Parameters

viewModel :  String / Object / Ext.app.ViewModel

weight : Number

A value to control how Components are laid out in a Ext.layout.container.Border layout or as docked items.

In a Border layout, this can control how the regions (not the center) region lay out if the west or east take full height or if the north or south region take full width. Also look at the Ext.layout.container.Border#regionWeights on the Border layout. An example to show how you can take control of this is:

Ext.create('Ext.container.Viewport', {
    layout      : 'border',
    defaultType : 'panel',
    items       : [
        {
            region : 'north',
            title  : 'North',
            height : 100
        },
        {
            region : 'south',
            title  : 'South',
            height : 100,
            weight : -25
        },
        {
            region : 'west',
            title  : 'West',
            width  : 200,
            weight : 15
        },
        {
            region : 'east',
            title  : 'East',
            width  : 200
        },
        {
            region : 'center',
            title  : 'center'
        }
    ]
});

If docked items, the weight will order how the items are laid out. Here is an example to put a Ext.toolbar.Toolbar above a Ext.panel.Panel's header:

Ext.create('Ext.panel.Panel', {
    renderTo    : document.body,
    width       : 300,
    height      : 300,
    title       : 'Panel',
    html        : 'Panel Body',
    dockedItems : [
        {
            xtype : 'toolbar',
            items : [
                {
                    text : 'Save'
                }
            ]
        },
        {
            xtype  : 'toolbar',
            weight : -10,
            items  : [
                {
                    text : 'Remove'
                }
            ]
        }
    ]
});

Defaults to:

null

width : Number / String
bindable bind

The width of this component. A numeric value will be interpreted as the number of pixels; a string value will be treated as a CSS value with units.

getWidth Number

Gets the current width of the component's underlying element.

Returns

:Number

setWidth ( width ) : Ext.Component

Sets the width of the component. This method fires the resize event.

Parameters

width :  Number

The new width to set. This may be one of:

  • A Number specifying the new width in pixels.
  • A String used to set the CSS width style.
  • undefined to leave the width unchanged.
  • null to clear the width.

Returns

:Ext.Component

this

xtype : Ext.enums.Widget

Note: Only applies to Ext.Component derived classes when used as a config in Ext.define.

This property provides a shorter alternative to creating objects than using a full class name. Using xtype is the most common way to define component instances, especially in a container. For example, the items in a form containing text fields could be created explicitly like so:

 items: [
     Ext.create('Ext.form.field.Text', {
         fieldLabel: 'Foo'
     }),
     Ext.create('Ext.form.field.Text', {
         fieldLabel: 'Bar'
     }),
     Ext.create('Ext.form.field.Number', {
         fieldLabel: 'Num'
     })
 ]

But by using xtype, the above becomes:

 items: [
     {
         xtype: 'textfield',
         fieldLabel: 'Foo'
     },
     {
         xtype: 'textfield',
         fieldLabel: 'Bar'
     },
     {
         xtype: 'numberfield',
         fieldLabel: 'Num'
     }
 ]

When the xtype is common to many items, Ext.container.Container#defaultType is another way to specify the xtype for all items that don't have an explicit xtype:

 defaultType: 'textfield',
 items: [
     { fieldLabel: 'Foo' },
     { fieldLabel: 'Bar' },
     { fieldLabel: 'Num', xtype: 'numberfield' }
 ]

Each member of the items array is now just a "configuration object". These objects are used to create and configure component instances. A configuration object can be manually used to instantiate a component using Ext#widget:

 var text1 = Ext.create('Ext.form.field.Text', {
     fieldLabel: 'Foo'
 });

 // or alternatively:

 var text1 = Ext.widget({
     xtype: 'textfield',
     fieldLabel: 'Foo'
 });

This conversion of configuration objects into instantiated components is done when a container is created as part of its {Ext.container.AbstractContainer#initComponent} process. As part of the same process, the items array is converted from its raw array form into a Ext.util.MixedCollection instance.

You can define your own xtype on a custom Ext.Component by specifying the xtype property in Ext#define. For example:

Ext.define('MyApp.PressMeButton', {
    extend: 'Ext.button.Button',
    xtype: 'pressmebutton',
    text: 'Press Me'
});

Care should be taken when naming an xtype in a custom component because there is a single, shared scope for all xtypes. Third part components should consider using a prefix to avoid collisions.

Ext.define('Foo.form.CoolButton', {
    extend: 'Ext.button.Button',
    xtype: 'ux-coolbutton',
    text: 'Cool!'
});

See Ext.enums.Widget for list of all available xtypes.

Available since: 2.3.0

properties

Instance Properties

$className
private pri

Defaults to:

'Ext.Base'

$configPrefixed : Boolean
private pri

The value true causes config values to be stored on instances using a property name prefixed with an underscore ("_") character. A value of false stores config values as properties using their exact name (no prefix).

Defaults to:

true

Available since: 5.0.0

$configStrict : Boolean
private pri

The value true instructs the initConfig method to only honor values for properties declared in the config block of a class. When false, properties that are not declared in a config block will be placed on the instance.

Defaults to:

true

Available since: 5.0.0

_isLayoutRoot : Boolean
protected pro

Setting this property to true causes the isLayoutRoot method to return true and stop the search for the top-most component for a layout.

Defaults to:

false

_renderState : Number
readonly ro private pri

This property holds one of the following values during the render process:

  • 0 - The component is not rendered.
  • 1 - The component has fired beforerender and is about to call beforeRender. The component has just started rendering.
  • 2 - The component has finished the beforeRender process and is about to call onRender. This is when rendering is set to true.
  • 3 - The component has started onRender. This is when rendered is set to true.
  • 4 - The component has finished its afterrender process.

Defaults to:

0

Available since: 5.0.0

autoGenId : Boolean
private pri

true indicates an id was auto-generated rather than provided by configuration.

Defaults to:

false

beforeBlur
protected pro

Template method to do any pre-blur processing.

Defaults to:

Ext.emptyFn

Parameters

e :  Ext.event.Event

The event object

beforeFocus
protected pro

Template method to do any pre-focus processing.

Defaults to:

Ext.emptyFn

Parameters

e :  Ext.event.Event

The event object

componentLayoutCounter : Number
private pri

The number of component layout calls made on this object.

Defaults to:

0

contentPaddingProperty : String

The name of the padding property that is used by the layout to manage padding. See managePadding

Defaults to:

'padding'

convertPositionSpec
private pri

By default this method does nothing but return the position spec passed to it. In rtl mode it is overridden to convert "l" to "r" and vice versa when required.

Defaults to:

Ext.identityFn

defaultBindProperty : String
protected pro

This property is used to determine the property of a bind config that is just the value. For example, if defaultBindProperty="value", then this shorthand bind config:

 bind: '{name}'

Is equivalent to this object form:

 bind: {
     value: '{name}'
 }

The defaultBindProperty is set to "value" for form fields and to "store" for grids and trees.

Defaults to:

null

eventsSuspended
private pri

Initial suspended call count. Incremented when suspendEvents is called, decremented when resumeEvents is called.

Defaults to:

0

floating : Boolean
readonly ro private pri

The value true indicates that this Component is floating.

floatParent : Ext.container.Container
readonly ro

Only present for floating Components which were inserted as child items of Containers.

There are other similar relationships such as the Ext.button.Button which activates a menu, or the Ext.menu.Item which activated a submenu, or the Ext.grid.column.Column which activated the column menu.

These differences are abstracted away by the up method.

Floating Components that are programmatically rendered will not have a floatParent property.

See floating and zIndexManager

focusable : Boolean

true for interactive Components, false for static Components. For Containers, this property reflects interactiveness of the Container itself, not its children. See isFocusable.

Note: Plain components are static, so not focusable.

Defaults to:

false

frameSize : Object
readonly ro

Indicates the width of any framing elements which were added within the encapsulating element to provide graphical, rounded borders. See the frame config. This property is null if the component is not framed.

This is an object containing the frame width in pixels for all four sides of the Component containing the following properties:

Defaults to:

null

Properties

top : Number

The width of the top framing element in pixels.

Defaults to: 0

right : Number

The width of the right framing element in pixels.

Defaults to: 0

bottom : Number

The width of the bottom framing element in pixels.

Defaults to: 0

left : Number

The width of the left framing element in pixels.

Defaults to: 0

width : Number

The total width of the left and right framing elements in pixels.

Defaults to: 0

height : Number

The total height of the top and right bottom elements in pixels.

Defaults to: 0

hasFocus : Boolean
private pri

true if this component has focus.

Defaults to:

false

hasListeners : Object
readonly ro

This object holds a key for any event that has a listener. The listener may be set directly on the instance, or on its class or a super class (via observe) or on the Ext.app.EventBus. The values of this object are truthy (a non-zero number) and falsy (0 or undefined). They do not represent an exact count of listeners. The value for an event is truthy if the event must be fired and is falsy if there is no need to fire the event.

The intended use of this property is to avoid the expense of fireEvent calls when there are no listeners. This can be particularly helpful when one would otherwise have to call fireEvent hundreds or thousands of times. It is used like this:

 if (this.hasListeners.foo) {
     this.fireEvent('foo', this, arg1);
 }

initFocusable
protected pro

Template method to do any Focusable related initialization that does not involve event listeners creation.

Defaults to:

Ext.emptyFn

initialConfig : Object
readonly ro

The config object passed to the constructor during Component creation.

Defaults to:

config

isComponent : Boolean

true in this class to identify an object as an instantiated Component, or subclass thereof.

Defaults to:

true

isConfiguring : Boolean
readonly ro protected pro

This property is set to true during the call to initConfig.

Defaults to:

false

Available since: 5.0.0

isFirstInstance : Boolean
readonly ro protected pro

This property is set to true if this instance is the first of its class.

Defaults to:

false

Available since: 5.0.0

isInstance : Boolean
readonly ro protected pro

This value is true and is used to identify plain objects from instances of a defined class.

Defaults to:

true

isObservable : Boolean

true in this class to identify an object as an instantiated Observable, or subclass thereof.

Defaults to:

true

maskOnDisable : Boolean

This is an internal flag that you use when creating custom components. By default this is set to true which means that every component gets a mask when it's disabled. Components like FieldContainer, FieldSet, Field, Button, Tab override this property to false since they want to implement custom disable logic.

Defaults to:

true

ownerCt : Ext.container.Container
readonly ro

This Component's owner Ext.container.Container (is set automatically when this Component is added to a Container).

Important. This is not a universal upwards navigation pointer. It indicates the Container which owns and manages this Component if any. There are other similar relationships such as the Ext.button.Button which activates a menu, or the Ext.menu.Item which activated a submenu, or the Ext.grid.column.Column which activated the column menu.

These differences are abstracted away by the up method.

Note: to access items within the Container see itemId.

Available since: 2.3.0

postBlur
protected pro

Template method to do any post-blur processing.

Defaults to:

Ext.emptyFn

Parameters

e :  Ext.event.Event

The event object

postFocus
protected pro

Template method to do any post-focus processing.

Defaults to:

Ext.emptyFn

Parameters

e :  Ext.event.Event

The event object

rendered : Boolean
readonly ro

Indicates whether or not the component has been rendered.

Defaults to:

false

Available since: 1.1.0

scrollFlags : Object
readonly ro private pri

An object property which provides unified information as to which dimensions are scrollable based upon the scrollable settings (And for views of trees and grids, the owning panel's scroll setting).

Note that if you set overflow styles using the style config or bodyStyle config, this object does not include that information. Use scrollable if you need to access these flags.

This object has the following properties:

Defaults to:

{
    auto: {
        // x:auto, y:auto
        auto: {
            overflowX: 'auto',
            overflowY: 'auto',
            x: true,
            y: true,
            both: true
        },
        // x:auto, y:false
        'false': {
            overflowX: 'auto',
            overflowY: 'hidden',
            x: true,
            y: false,
            both: false
        },
        // x:auto, y:scroll
        scroll: {
            overflowX: 'auto',
            overflowY: 'scroll',
            x: true,
            y: true,
            both: true
        }
    },
    'false': {
        // x:false, y:auto
        auto: {
            overflowX: 'hidden',
            overflowY: 'auto',
            x: false,
            y: true,
            both: false
        },
        // x:false, y:false
        'false': {
            overflowX: 'hidden',
            overflowY: 'hidden',
            x: false,
            y: false,
            both: false
        },
        // x:false, y:scroll
        scroll: {
            overflowX: 'hidden',
            overflowY: 'scroll',
            x: false,
            y: true,
            both: false
        }
    },
    scroll: {
        // x:scroll, y:auto
        auto: {
            overflowX: 'scroll',
            overflowY: 'auto',
            x: true,
            y: true,
            both: true
        },
        // x:scroll, y:false
        'false': {
            overflowX: 'scroll',
            overflowY: 'hidden',
            x: true,
            y: false,
            both: false
        },
        // x:scroll, y:scroll
        scroll: {
            overflowX: 'scroll',
            overflowY: 'scroll',
            x: true,
            y: true,
            both: true
        }
    },
    none: {
        overflowX: '',
        overflowY: '',
        x: false,
        y: false,
        both: false
    }
}

Properties

x : Boolean

true if this Component is scrollable horizontally - style setting may be 'auto' or 'scroll'.

y : Boolean

true if this Component is scrollable vertically - style setting may be 'auto' or 'scroll'.

both : Boolean

true if this Component is scrollable both horizontally and vertically.

overflowX : String

The overflow-x style setting, 'auto' or 'scroll' or ''.

overflowY : String

The overflow-y style setting, 'auto' or 'scroll' or ''.

self : Ext.Class
protected pro

Get the reference to the current class from which this object was instantiated. Unlike Ext.Base#statics, this.self is scope-dependent and it's meant to be used for dynamic inheritance. See Ext.Base#statics for a detailed comparison

Ext.define('My.Cat', {
    statics: {
        speciesName: 'Cat' // My.Cat.speciesName = 'Cat'
    },

    constructor: function() {
        alert(this.self.speciesName); // dependent on 'this'
    },

    clone: function() {
        return new this.self();
    }
});


Ext.define('My.SnowLeopard', {
    extend: 'My.Cat',
    statics: {
        speciesName: 'Snow Leopard'         // My.SnowLeopard.speciesName = 'Snow Leopard'
    }
});

var cat = new My.Cat();                     // alerts 'Cat'
var snowLeopard = new My.SnowLeopard();     // alerts 'Snow Leopard'

var clone = snowLeopard.clone();
alert(Ext.getClassName(clone));             // alerts 'My.SnowLeopard'

Defaults to:

Base

synthetic : Boolean
private pri

This property is true if the component was created internally by the framework and is not explicitly user-defined. This is set for such things as Splitter instances managed by border and box layouts.

Defaults to:

false

validRefRe : RegExp
private pri

Regular expression used for validating reference values.

Defaults to:

/^[a-z_][a-z0-9_]*$/i

zIndexManager : Ext.ZIndexManager
readonly ro

Only present for floating Components after they have been rendered.

A reference to the ZIndexManager which is managing this Component's z-index.

The Ext.ZIndexManager maintains a stack of floating Component z-indices, and also provides a single modal mask which is insert just beneath the topmost visible modal floating Component.

Floating Components may be brought to the front or sent to the back of the z-index stack.

This defaults to the global Ext.WindowManager for floating Components that are programmatically rendered.

For floating Components which are added to a Container, the ZIndexManager is acquired from the first ancestor Container found which is floating. If no floating ancestor is found, the global Ext.WindowManager is used.

See Ext.Component#cfg-floating and zIndexParent

zIndexParent : Ext.container.Container
readonly ro

Only present for Ext.Component#cfg-floating Components which were inserted as child items of Containers, and which have a floating Container in their containment ancestry.

For Ext.Component#cfg-floating Components which are child items of a Container, the zIndexParent will be a floating ancestor Container which is responsible for the base z-index value of all its floating descendants. It provides a Ext.ZIndexManager which provides z-indexing services for all its descendant floating Components.

Floating Components that are programmatically rendered will not have a zIndexParent property.

For example, the dropdown Ext.view.BoundList of a ComboBox which is in a Window will have the Window as its zIndexParent, and will always show above that Window, wherever the Window is placed in the z-index stack.

See Ext.Component#cfg-floating and zIndexManager

Static Properties

$onExtended
static sta private pri

Defaults to:

[]

componentIdAttribute : String
static sta private pri

Name of the element attribute containing its Component id. Used to look up Components by their Elements.

Defaults to:

'componentId'

methods

Instance Methods

_addDeclaredListeners ( listeners ) : Boolean
private pri

Adds declarative listeners as nested arrays of listener objects.

Parameters

listeners :  Array

Returns

:Boolean

true if any listeners were added

addAfterListener ( eventName, fn, [scope], [options] )
deprecated dep

Appends an after-event handler.

Same as addListener with order set to 'after'.

Parameters

eventName :  String/String[]/Object

The name of the event to listen for.

fn :  Function/String

The method the event invokes.

scope :  Object (optional)

The scope for fn.

options :  Object (optional)

An object containing handler configuration.

Deprecated since version 5.1
Use addListener with the `priority` option instead.

addBeforeListener ( eventName, fn, [scope], [options] )
deprecated dep

Appends a before-event handler. Returning false from the handler will stop the event.

Same as addListener with order set to 'before'.

Parameters

eventName :  String/String[]/Object

The name of the event to listen for.

fn :  Function/String

The method the event invokes.

scope :  Object (optional)

The scope for fn.

options :  Object (optional)

An object containing handler configuration.

Deprecated since version 5.1
Use addListener with the `priority` option instead.

addBindableUpdater ( property )
private pri

Ensures that the given property (if it is a Config System config) has a proper "updater" method on this instance to sync changes to the config.

Available since: 5.0.0

Parameters

property :  String

The name of the config property.

addClass ( cls ) : Ext.Component
deprecated dep

Adds a CSS class to the top level element representing this component.

Available since: 2.3.0

Parameters

cls :  String/String[]

The CSS class name to add.

Returns

:Ext.Component

Returns the Component to allow method chaining.

Deprecated since version 4.1
Use addCls instead.

addCls ( cls ) : Ext.Component
chainable ch

Adds a CSS class to the top level element representing this component.

Parameters

cls :  String/String[]

The CSS class name to add.

Returns

:Ext.Component

Returns the Component to allow method chaining.

addClsWithUI ( classes, [skip] )

Adds a cls to the uiCls array, which will also call addUIClsToElement and adds to all elements of this component.

Parameters

classes :  String/String[]

A string or an array of strings to add to the uiCls.

skip :  Boolean (optional)

true to skip adding it to the class and do it later (via the return).

addDeprecations ( deprecations )
private pri

This method applies a versioned, deprecation declaration to this class. This is typically called by the deprecated config.

Parameters

deprecations :  Object

addListener ( eventName, [fn], [scope], [options], [order] ) : Object
chainable ch

The on method is shorthand for addListener.

Appends an event handler to this object. For example:

myGridPanel.on("itemclick", this.onItemClick, this);

The method also allows for a single argument to be passed which is a config object containing properties which specify multiple events. For example:

myGridPanel.on({
    cellclick: this.onCellClick,
    select: this.onSelect,
    viewready: this.onViewReady,
    scope: this // Important. Ensure "this" is correct during handler execution
});

One can also specify options for each event handler separately:

myGridPanel.on({
    cellclick: {fn: this.onCellClick, scope: this, single: true},
    viewready: {fn: panel.onViewReady, scope: panel}
});

Names of methods in a specified scope may also be used:

myGridPanel.on({
    cellclick: {fn: 'onCellClick', scope: this, single: true},
    viewready: {fn: 'onViewReady', scope: panel}
});

Parameters

eventName :  String/Object

The name of the event to listen for. May also be an object who's property names are event names.

fn :  Function/String (optional)

The method the event invokes or the name of the method within the specified scope. Will be called with arguments given to fireEvent plus the options parameter described below.

scope :  Object (optional)

The scope (this reference) in which the handler function is executed. If omitted, defaults to the object which fired the event.

options :  Object (optional)

An object containing handler configuration.

Note: The options object will also be passed as the last argument to every event handler.

This object may contain any of the following properties:

scope :  Object

The scope (this reference) in which the handler function is executed. If omitted, defaults to the object which fired the event.

delay :  Number

The number of milliseconds to delay the invocation of the handler after the event fires.

single :  Boolean

True to add a handler to handle just the next firing of the event, and then remove itself.

buffer :  Number

Causes the handler to be scheduled to run in an Ext.util.DelayedTask delayed by the specified number of milliseconds. If the event fires again within that time, the original handler is not invoked, but the new handler is scheduled in its place.

onFrame :  Number

Causes the handler to be scheduled to run at the next animation frame event. If the event fires again before that time, the handler is not rescheduled - the handler will only be called once when the next animation frame is fired, with the last set of arguments passed.

target :  Ext.util.Observable

Only call the handler if the event was fired on the target Observable, not if the event was bubbled up from a child Observable.

element :  String

This option is only valid for listeners bound to Ext.Component. The name of a Component property which references an Ext.dom.Element to add a listener to.

This option is useful during Component construction to add DOM event listeners to elements of Ext.Component which will exist only after the Component is rendered.

For example, to add a click listener to a Panel's body:

  var panel = new Ext.panel.Panel({
      title: 'The title',
      listeners: {
          click: this.handlePanelClick,
          element: 'body'
      }
  });

In order to remove listeners attached using the element, you'll need to reference the element itself as seen below.

 panel.body.un(...)

delegate :  String (optional)

A simple selector to filter the event target or look for a descendant of the target.

The "delegate" option is only available on Ext.dom.Element instances (or when attaching a listener to a Ext.dom.Element via a Component using the element option).

See the delegate example below.

capture :  Boolean (optional)

When set to true, the listener is fired in the capture phase of the event propagation sequence, instead of the default bubble phase.

The capture option is only available on Ext.dom.Element instances (or when attaching a listener to a Ext.dom.Element via a Component using the element option).

stopPropagation :  Boolean (optional)

This option is only valid for listeners bound to Ext.dom.Element. true to call stopPropagation on the event object before firing the handler.

preventDefault :  Boolean (optional)

This option is only valid for listeners bound to Ext.dom.Element. true to call preventDefault on the event object before firing the handler.

stopEvent :  Boolean (optional)

This option is only valid for listeners bound to Ext.dom.Element. true to call stopEvent on the event object before firing the handler.

args :  Array (optional)

Optional arguments to pass to the handler function. Any additional arguments passed to fireEvent will be appended to these arguments.

destroyable :  Boolean (optional)

When specified as true, the function returns a destroyable object. An object which implements the destroy method which removes all listeners added in this call. This syntax can be a helpful shortcut to using un; particularly when removing multiple listeners. NOTE - not compatible when using the element option. See un for the proper syntax for removing listeners added using the element config.

Defaults to:

false

priority :  Number (optional)

An optional numeric priority that determines the order in which event handlers are run. Event handlers with no priority will be run as if they had a priority of 0. Handlers with a higher priority will be prioritized to run sooner than those with a lower priority. Negative numbers can be used to set a priority lower than the default. Internally, the framework uses a range of 1000 or greater, and -1000 or lesser for handlers that are intended to run before or after all others, so it is recommended to stay within the range of -999 to 999 when setting the priority of event handlers in application-level code. A priority must be an integer to be valid. Fractional values are reserved for internal framework use.

order :  String (optional)

A legacy option that is provided for backward compatibility. It is recommended to use the priority option instead. Available options are:

  • 'before': equal to a priority of 100
  • 'current': equal to a priority of 0 or default priority
  • 'after': equal to a priority of -100

Defaults to:

'current'

order :  String (optional)

A shortcut for the order event option. Provided for backward compatibility. Please use the priority event option instead.

Combining Options

Using the options argument, it is possible to combine different types of listeners:

A delayed, one-time listener.

myPanel.on('hide', this.handleClick, this, {
    single: true,
    delay: 100
});

Attaching multiple handlers in 1 call

The method also allows for a single argument to be passed which is a config object containing properties which specify multiple handlers and handler configs.

grid.on({
    itemclick: 'onItemClick',
    itemcontextmenu: grid.onItemContextmenu,
    destroy: {
        fn: function () {
            // function called within the 'altCmp' scope instead of grid
        },
        scope: altCmp // unique scope for the destroy handler
    },
    scope: grid       // default scope - provided for example clarity
});

Delegate

This is a configuration option that you can pass along when registering a handler for an event to assist with event delegation. By setting this configuration option to a simple selector, the target element will be filtered to look for a descendant of the target. For example:

var panel = Ext.create({
    xtype: 'panel',
    renderTo: document.body,
    title: 'Delegate Handler Example',
    frame: true,
    height: 220,
    width: 220,
    html: '<h1 class="myTitle">BODY TITLE</h1>Body content'
});

// The click handler will only be called when the click occurs on the
// delegate: h1.myTitle ("h1" tag with class "myTitle")
panel.on({
    click: function (e) {
        console.log(e.getTarget().innerHTML);
    },
    element: 'body',
    delegate: 'h1.myTitle'
 });

Defaults to: 'current'

Returns

:Object

Only when the destroyable option is specified.

A Destroyable object. An object which implements the destroy method which removes all listeners added in this call. For example:

this.btnListeners =  = myButton.on({
    destroyable: true
    mouseover:   function() { console.log('mouseover'); },
    mouseout:    function() { console.log('mouseout'); },
    click:       function() { console.log('click'); }
});

And when those listeners need to be removed:

Ext.destroy(this.btnListeners);

or

this.btnListeners.destroy();

addManagedListener ( item, ename, [fn], [scope], [options] ) : Object

The addManagedListener method is used when some object (call it "A") is listening to an event on another observable object ("B") and you want to remove that listener from "B" when "A" is destroyed. This is not an issue when "B" is destroyed because all of its listeners will be removed at that time.

Example:

Ext.define('Foo', {
    extend: 'Ext.Component',

    initComponent: function () {
        this.addManagedListener(MyApp.SomeGlobalSharedMenu, 'show', this.doSomething);
        this.callParent();
    }
});

As you can see, when an instance of Foo is destroyed, it ensures that the 'show' listener on the menu (MyApp.SomeGlobalSharedMenu) is also removed.

As of version 5.1 it is no longer necessary to use this method in most cases because listeners are automatically managed if the scope object provided to addListener is an Observable instance. However, if the observable instance and scope are not the same object you still need to use mon or addManagedListener if you want the listener to be managed.

Parameters

item :  Ext.util.Observable/Ext.dom.Element

The item to which to add a listener/listeners.

ename :  Object/String

The event name, or an object containing event name properties.

fn :  Function/String (optional)

If the ename parameter was an event name, this is the handler function or the name of a method on the specified scope.

scope :  Object (optional)

If the ename parameter was an event name, this is the scope (this reference) in which the handler function is executed.

options :  Object (optional)

If the ename parameter was an event name, this is the addListener options.

Returns

:Object

Only when the destroyable option is specified.

A Destroyable object. An object which implements the destroy method which removes all listeners added in this call. For example:

this.btnListeners = myButton.mon({
    destroyable: true
    mouseover:   function() { console.log('mouseover'); },
    mouseout:    function() { console.log('mouseout'); },
    click:       function() { console.log('click'); }
});

And when those listeners need to be removed:

Ext.destroy(this.btnListeners);

or

this.btnListeners.destroy();

addPropertyToState ( state, propName, [value] ) : Object
protected pro

Save a property to the given state object if it is not its default or configured value.

Parameters

state :  Object

The state object.

propName :  String

The name of the property on this object to save.

value :  String (optional)

The value of the state property (defaults to this[propName]).

Returns

:Object

The state object or a new object if state was null and the property was saved.

addStateEvents ( events )

Add events that will trigger the state to be saved. If the first argument is an array, each element of that array is the name of a state event. Otherwise, each argument passed to this method is the name of a state event.

Parameters

events :  String/String[]

The event name or an array of event names.

addUIClsToElement ( uiCls )
protected pro

Method which adds a specified UI + uiCls to the components element. Can be overridden to add the UI to more than just the component's element.

Parameters

uiCls :  String

The UI class to add to the element.

addUIToElement
private pri

Method which adds a specified UI to the components element.

afterClassMixedIn ( targetClass )
private pri

Called after the mixin is applied. We need to see if childEls were used by the targetClass and apply them to the config.

Parameters

targetClass :  Ext.Class

afterComponentLayout ( width, height, oldWidth, oldHeight )
template tpl protected pro

Called by the layout system after the Component has been laid out.

This method is not called on components that use liquidLayout, such as Ext.button.Button and Ext.form.field.Base.

Parameters

width :  Number

The width that was set

height :  Number

The height that was set

oldWidth :  Number/undefined

The old width, or undefined if this was the initial layout.

oldHeight :  Number/undefined

The old height, or undefined if this was the initial layout.

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

afterHide ( [callback], [scope] )
template tpl protected pro

Invoked after the Component has been hidden.

Gets passed the same callback and scope parameters that #onHide received.

Parameters

callback :  Function (optional)

scope :  Object (optional)

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

afterRender
template tpl protected pro

Allows additional behavior after rendering is complete. At this stage, the Ext.Component Element will have been styled according to the configuration, will have had any configured CSS class names added, and will be in the configured visibility and configured enable state.

Note: If the Component has a ViewController and the controller has an afterRender method it will be called passing the Component as the single param.

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

afterSetPosition ( x, y )
template tpl protected pro

Template method called after a Component has been positioned.

Parameters

x :  Number

y :  Number

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

afterShow ( [animateTarget], [callback], [scope] )
template tpl protected pro

Invoked after the Component is shown (after #onShow is called).

Gets passed the same parameters as #show.

Parameters

animateTarget :  String/Ext.dom.Element (optional)

callback :  Function (optional)

scope :  Object (optional)

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

alignTo ( element, [position], [offsets] ) : Ext.util.Positionable

Aligns the element with another element relative to the specified anchor points. If the other element is the document it aligns it to the viewport. The position parameter is optional, and can be specified in any one of the following formats:

  • Blank: Defaults to aligning the element's top-left corner to the target's bottom-left corner ("tl-bl").
  • One anchor (deprecated): The passed anchor position is used as the target element's anchor point. The element being aligned will position its top-left corner (tl) to that point. This method has been deprecated in favor of the newer two anchor syntax below.
  • Two anchors: If two values from the table below are passed separated by a dash, the first value is used as the element's anchor point, and the second value is used as the target's anchor point.

In addition to the anchor points, the position parameter also supports the "?" character. If "?" is passed at the end of the position string, the element will attempt to align as specified, but the position will be adjusted to constrain to the viewport if necessary. Note that the element being aligned might be swapped to align to a different position than that specified in order to enforce the viewport constraints. Following are all of the supported anchor positions:

Value  Description
-----  -----------------------------
tl     The top left corner (default)
t      The center of the top edge
tr     The top right corner
l      The center of the left edge
c      In the center of the element
r      The center of the right edge
bl     The bottom left corner
b      The center of the bottom edge
br     The bottom right corner

Example Usage:

// align el to other-el using the default positioning
// ("tl-bl", non-constrained)
el.alignTo("other-el");

// align the top left corner of el with the top right corner of other-el
// (constrained to viewport)
el.alignTo("other-el", "tr?");

// align the bottom right corner of el with the center left edge of other-el
el.alignTo("other-el", "br-l?");

// align the center of el with the bottom left corner of other-el and
// adjust the x position by -6 pixels (and the y position by 0)
el.alignTo("other-el", "c-bl", [-6, 0]);

Parameters

element :  Ext.util.Positionable/HTMLElement/String

The Positionable, HTMLElement, or id of the element to align to.

position :  String (optional)

The position to align to

Defaults to: "tl-bl?"

offsets :  Number[] (optional)

Offset the positioning by [x, y] Element animation config object

Returns

:Ext.util.Positionable

this

animate ( config ) : Object
chainable ch

Performs custom animation on this object.

This method is applicable to both the Ext.Component class and the Ext.draw.sprite.Sprite class. It performs animated transitions of certain properties of this object over a specified timeline.

Animating a Ext.Component

When animating a Component, the following properties may be specified in from, to, and keyframe objects:

  • x - The Component's page X position in pixels.

  • y - The Component's page Y position in pixels

  • left - The Component's left value in pixels.

  • top - The Component's top value in pixels.

  • width - The Component's width value in pixels.

  • height - The Component's height value in pixels.

The following property may be set on the animation config root:

  • dynamic - Specify as true to update the Component's layout (if it is a Container) at every frame of the animation. Use sparingly as laying out on every intermediate size change is an expensive operation.

For example, to animate a Window to a new size, ensuring that its internal layout and any shadow is correct:

myWindow = Ext.create('Ext.window.Window', {
    title: 'Test Component animation',
    width: 500,
    height: 300,
    layout: {
        type: 'hbox',
        align: 'stretch'
    },
    items: [{
        title: 'Left: 33%',
        margin: '5 0 5 5',
        flex: 1
    }, {
        title: 'Left: 66%',
        margin: '5 5 5 5',
        flex: 2
    }]
});
myWindow.show();
myWindow.header.el.on('click', function() {
    myWindow.animate({
        to: {
            width: (myWindow.getWidth() == 500) ? 700 : 500,
            height: (myWindow.getHeight() == 300) ? 400 : 300
        }
    });
});

For performance reasons, by default, the internal layout is only updated when the Window reaches its final "to" size. If dynamic updating of the Window's child Components is required, then configure the animation with dynamic: true and the two child items will maintain their proportions during the animation.

Parameters

config :  Object

Configuration for Ext.fx.Anim. Note that the to config is required.

Returns

:Object

this

applyBind ( binds, currentBindings ) : Object
private pri

Available since: 5.0.0

Parameters

binds :  String/Object

currentBindings :  Object

Returns

:Object

applyRenderSelectors
private pri

Sets references to elements inside the component. This applies renderSelectors as well as childEls.

applySession ( session ) : Ext.data.Session
private pri

Transforms a Session config to a proper instance.

Available since: 5.0.0

Parameters

session :  Object

Returns

:Ext.data.Session

applyState ( state )

Applies the state to the object. This should be overridden in subclasses to do more complex state operations. By default it applies the state properties onto the current object.

Parameters

state :  Object

The state

applyViewModel ( viewModel ) : Ext.app.ViewModel
private pri

Transforms a ViewModel config to a proper instance.

Available since: 5.0.0

Parameters

viewModel :  String/Object/Ext.app.ViewModel

Returns

:Ext.app.ViewModel

attachChildEls ( el, owner )
private pri

Sets references to elements inside the component.

Parameters

el :  Object

owner :  Object

beforeDestroy
template tpl protected pro

Invoked before the Component is destroyed.

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

beforeLayout
template tpl protected pro

Occurs before componentLayout is run. In previous releases, this method could return false to prevent its layout but that is not supported in Ext JS 4.1 or higher. This method is simply a notification of the impending layout to give the component a chance to adjust the DOM. Ideally, DOM reads should be avoided at this time to reduce expensive document reflows.

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

beforeRender
template tpl protected pro

Allows additional behavior before rendering.

Note: If the Component has a ViewController and the controller has a beforeRender method it will be called passing the Component as the single param.

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

beforeSetPosition ( x, y, animate )
private pri

Template method called before a Component is positioned.

Ensures that the position is adjusted so that the Component is constrained if so configured.

Parameters

x :  Object

y :  Object

animate :  Object

beforeShow
template tpl protected pro

Invoked before the Component is shown.

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

bubble ( fn, [scope], [args] ) : Ext.Component
chainable ch

Bubbles up the component/container hierarchy, calling the specified function with each component. The scope (this) of function call will be the scope provided or the current component. The arguments to the function will be the args provided or the current component. If the function returns false at any point, the bubble is stopped.

Parameters

fn :  Function

The function to call

scope :  Object (optional)

The scope of the function. Defaults to current node.

args :  Array (optional)

The args to call the function with. Defaults to passing the current component.

Returns

:Ext.Component

this

cacheRefEls ( el )
private pri

Ensures that all elements with "data-ref" attributes get loaded into the cache. This really helps on IE8 where getElementById is a search not a lookup. By populating our cache with one search of the DOM we then have random access to the elements as we do our childEls wire up.

Parameters

el :  Object

calculateAnchorXY ( [anchor], [extraX], [extraY], [size] ) : Number[]
private pri

Calculates x,y coordinates specified by the anchor position on the element, adding extraX and extraY values.

Parameters

anchor :  String (optional)

The specified anchor position. See alignTo for details on supported anchor positions.

Defaults to: 'tl'

extraX :  Number (optional)

value to be added to the x coordinate

extraY :  Number (optional)

value to be added to the y coordinate

size :  Object (optional)

An object containing the size to use for calculating anchor position {width: (target width), height: (target height)} (defaults to the element's current size)

Returns

:Number[]

[x, y] An array containing the element's x and y coordinates

calculateConstrainedPosition ( [constrainTo], [proposedPosition], [local], [proposedSize] ) : Number[]
private pri

Calculates the new [x,y] position to move this Positionable into a constrain region.

By default, this Positionable is constrained to be within the container it was added to, or the element it was rendered to.

Priority is given to constraining the top and left within the constraint.

An alternative constraint may be passed.

Parameters

constrainTo :  String/HTMLElement/Ext.dom.Element/Ext.util.Region (optional)

The Element or Ext.util.Region into which this Component is to be constrained. Defaults to the element into which this Positionable was rendered, or this Component's {@link Ext.Component#constrainTo.

proposedPosition :  Number[] (optional)

A proposed [X, Y] position to test for validity and to coerce into constraints instead of using this Positionable's current position.

local :  Boolean (optional)

The proposedPosition is local (relative to floatParent if a floating Component)

proposedSize :  Number[] (optional)

A proposed [width, height] size to use when calculating constraints instead of using this Positionable's current size.

Returns

:Number[]

If the element needs to be translated, the new [X, Y] position within constraints if possible, giving priority to keeping the top and left edge in the constrain region. Otherwise, false.

callParent ( args ) : Object
protected pro

Call the "parent" method of the current method. That is the method previously overridden by derivation or by an override (see Ext#define).

 Ext.define('My.Base', {
     constructor: function (x) {
         this.x = x;
     },

     statics: {
         method: function (x) {
             return x;
         }
     }
 });

 Ext.define('My.Derived', {
     extend: 'My.Base',

     constructor: function () {
         this.callParent([21]);
     }
 });

 var obj = new My.Derived();

 alert(obj.x);  // alerts 21

This can be used with an override as follows:

 Ext.define('My.DerivedOverride', {
     override: 'My.Derived',

     constructor: function (x) {
         this.callParent([x*2]); // calls original My.Derived constructor
     }
 });

 var obj = new My.Derived();

 alert(obj.x);  // now alerts 42

This also works with static and private methods.

 Ext.define('My.Derived2', {
     extend: 'My.Base',

     // privates: {
     statics: {
         method: function (x) {
             return this.callParent([x*2]); // calls My.Base.method
         }
     }
 });

 alert(My.Base.method(10));     // alerts 10
 alert(My.Derived2.method(10)); // alerts 20

Lastly, it also works with overridden static methods.

 Ext.define('My.Derived2Override', {
     override: 'My.Derived2',

     // privates: {
     statics: {
         method: function (x) {
             return this.callParent([x*2]); // calls My.Derived2.method
         }
     }
 });

 alert(My.Derived2.method(10); // now alerts 40

To override a method and replace it and also call the superclass method, use callSuper. This is often done to patch a method to fix a bug.

Parameters

args :  Array/Arguments

The arguments, either an array or the arguments object from the current method, for example: this.callParent(arguments)

Returns

:Object

Returns the result of calling the parent method

callSuper ( args ) : Object
protected pro

This method is used by an override to call the superclass method but bypass any overridden method. This is often done to "patch" a method that contains a bug but for whatever reason cannot be fixed directly.

Consider:

 Ext.define('Ext.some.Class', {
     method: function () {
         console.log('Good');
     }
 });

 Ext.define('Ext.some.DerivedClass', {
     extend: 'Ext.some.Class',

     method: function () {
         console.log('Bad');

         // ... logic but with a bug ...

         this.callParent();
     }
 });

To patch the bug in Ext.some.DerivedClass.method, the typical solution is to create an override:

 Ext.define('App.patches.DerivedClass', {
     override: 'Ext.some.DerivedClass',

     method: function () {
         console.log('Fixed');

         // ... logic but with bug fixed ...

         this.callSuper();
     }
 });

The patch method cannot use method-callParent to call the superclass method since that would call the overridden method containing the bug. In other words, the above patch would only produce "Fixed" then "Good" in the console log, whereas, using callParent would produce "Fixed" then "Bad" then "Good".

Parameters

args :  Array/Arguments

The arguments, either an array or the arguments object from the current method, for example: this.callSuper(arguments)

Returns

:Object

Returns the result of calling the superclass method

cancelFocus
protected pro

Cancel any deferred focus on this component

center Ext.Component
chainable ch

Center this Component in its container.

Returns

:Ext.Component

this

clearListeners

Removes all listeners for this object including the managed listeners

clearManagedListeners

Removes all managed listeners for this object.

cloneConfig ( overrides ) : Ext.Component

Clone the current component using the original config values passed into this instance by default.

Parameters

overrides :  Object

A new config containing any properties to override in the cloned version. An id property can be passed on this object, otherwise one will be generated to avoid duplicates.

Returns

:Ext.Component

clone The cloned copy of this component

constrainBox ( box )
private pri

Parameters

box :  Object

constructPlugin ( ptype )
private pri

Parameters

ptype :  String/Object

string or config object containing a ptype property.

Constructs a plugin according to the passed config object/ptype string.

Ensures that the constructed plugin always has a cmp reference back to this component. The setting up of this is done in PluginManager. The PluginManager ensures that a reference to this component is passed to the constructor. It also ensures that the plugin's setCmp method (if any) is called.

constructPlugins
private pri

Returns an array of fully constructed plugin instances. This converts any configs into their appropriate instances.

It does not mutate the plugins array. It creates a new array.

constructor ( config )

Creates new Component.

Parameters

config :  Ext.dom.Element/String/Object

The configuration options may be specified as either:

  • an element : it is set as the internal element and its id used as the component id
  • a string : it is assumed to be the id of an existing element and is used as the component id
  • anything else : it is assumed to be a standard config object and is applied to the component

createRelayer ( newName, [beginEnd] ) : Function
private pri

Creates an event handling function which re-fires the event from this object as the passed event name.

Parameters

newName :  String

The name under which to re-fire the passed parameters.

beginEnd :  Array (optional)

The caller can specify on which indices to slice.

Returns

:Function

destroy
private pri

Destroys the Component. This method must not be overridden. To add extra functionality to destruction time in a subclass, implement the template method or {@link #onDestroy. And do not forget to callParent() in your implementation.

Available since: 1.1.0

disable ( [silent] ) :
chainable ch

Disable the component.

Available since: 1.1.0

Parameters

silent :  Boolean (optional)

Passing true will suppress the disable event from being fired.

Defaults to: false

Returns

:

doApplyRenderTpl ( out, values )
private pri

Called from the selected frame generation template to insert this Component's inner structure inside the framing structure.

When framing is used, a selected frame generation template is used as the primary template of the #getElConfig instead of the configured renderTpl. The renderTpl is invoked by this method which is injected into the framing template.

Parameters

out :  Object

values :  Object

doAutoRender
private pri

Handles autoRender. Floating Components may have an ownerCt. If they are asking to be constrained, constrain them within that ownerCt, and have their z-index managed locally. Floating Components are always rendered to document.body

doComponentLayout Ext.Component
chainable ch deprecated dep

This method needs to be called whenever you change something on this component that requires the Component's layout to be recalculated.

Returns

:Ext.Component

this

Deprecated since version 4.1
Use updateLayout instead.

doConstrain ( [constrainTo] )

Moves this floating Component into a constrain region.

By default, this Component is constrained to be within the container it was added to, or the element it was rendered to.

An alternative constraint may be passed.

Parameters

constrainTo :  String/HTMLElement/Ext.dom.Element/Ext.util.Region (optional)

The Element or Ext.util.Region into which this Component is to be constrained. Defaults to the element into which this floating Component was rendered.

doFireEvent ( eventName, args, bubbles )
private pri

Continue to fire event.

Parameters

eventName :  String

args :  Array

bubbles :  Boolean

enable ( [silent] ) :
chainable ch

Enable the component

Available since: 1.1.0

Parameters

silent :  Boolean (optional)

Passing true will suppress the enable event from being fired.

Defaults to: false

Returns

:

enableBubble ( eventNames )

Enables events fired by this Observable to bubble up an owner hierarchy by calling this.getBubbleTarget() if present. There is no implementation in the Observable base class.

This is commonly used by Ext.Components to bubble events to owner Containers. See Ext.Component#getBubbleTarget. The default implementation in Ext.Component returns the Component's immediate owner. But if a known target is required, this can be overridden to access the required target more quickly.

Example:

Ext.define('Ext.overrides.form.field.Base', {
    override: 'Ext.form.field.Base',

    //  Add functionality to Field's initComponent to enable the change event to bubble
    initComponent: function () {
        this.callParent();
        this.enableBubble('change');
    }
});

var myForm = Ext.create('Ext.form.Panel', {
    title: 'User Details',
    items: [{
        ...
    }],
    listeners: {
        change: function() {
            // Title goes red if form has been modified.
            myForm.header.setStyle('color', 'red');
        }
    }
});

Parameters

eventNames :  String/String[]

The event name to bubble, or an Array of event names.

ensureAttachedToBody ( [runLayout] )

Ensures that this component is attached to document.body. If the component was rendered to Ext#getDetachedBody, then it will be appended to document.body. Any configured position is also restored.

Parameters

runLayout :  Boolean (optional)

True to run the component's layout.

Defaults to: false

findFocusTarget Ext.Component
private pri

Finds an alternate Component to focus if this Component is disabled while focused, or focused while disabled, or otherwise unable to focus.

In both cases, focus must not be lost to document.body, but must move to an intuitively connectable Component, either a sibling, or uncle or nephew.

This is both for the convenience of keyboard users, and also for when focus is tracked within a Component tree such as for ComboBoxes and their dropdowns.

For example, a ComboBox with a PagingToolbar in is BoundList. If the "Next Page" button is hit, the LoadMask shows and focuses, the next page is the last page, so the "Next Page" button is disabled. When the LoadMask hides, it attempt to focus the last focused Component which is the disabled "Next Page" button. In this situation, focus should move to a sibling within the PagingToolbar.

Returns

:Ext.Component

A closely related focusable Component to which focus can move.

findParentBy ( fn ) : Ext.container.Container

Find a container above this component at any level by a custom function. If the passed function returns true, the container will be returned.

See also the up method.

Parameters

fn :  Function

The custom function to call with the arguments (container, this component).

Returns

:Ext.container.Container

The first Container for which the custom function returns true

findParentByType ( xtype ) : Ext.container.Container

Find a container above this component at any level by xtype or class

See also the up method.

Parameters

xtype :  String/Ext.Class

The xtype string for a component, or the class of the component directly

Returns

:Ext.container.Container

The first Container which matches the given xtype or class

findPlugin ( ptype ) : Ext.plugin.Abstract

Retrieves plugin from this component's collection by its ptype.

var grid = Ext.create('Ext.grid.Panel', {
    store: {
        fields: ['name'],
        data: [{
            name: 'Scott Pilgrim'
        }]
    },
    columns: [{
        header: 'Name',
        dataIndex: 'name',
        editor: 'textfield',
        flex: 1
    }],
    selType: 'cellmodel',
    plugins: {
        ptype: 'cellediting',
        clicksToEdit: 1,
        pluginId: 'myplugin'
    },
    height: 200,
    width: 400,
    renderTo: Ext.getBody()
});

grid.findPlugin('cellediting');  // the cellediting plugin

Note: See also getPlugin

Parameters

ptype :  String

The Plugin's ptype as specified by the class's alias configuration.

Returns

:Ext.plugin.Abstract

plugin instance or undefined if not found

finishRender ( containerIdx )
private pri

This method visits the rendered component tree in a "top-down" order. That is, this code runs on a parent component before running on a child. This method calls the onRender method of each component.

Parameters

containerIdx :  Number

The index into the Container items of this Component.

fireAction ( eventName, args, fn, [scope], [options], [order] )

Fires the specified event with the passed parameters and executes a function (action). By default, the action function will be executed after any "before" event handlers (as specified using the order option of addListener), but before any other handlers are fired. This gives the "before" handlers an opportunity to cancel the event by returning false, and prevent the action function from being called.

The action can also be configured to run after normal handlers, but before any "after" handlers (as specified using the order event option) by passing 'after' as the order parameter. This configuration gives any event handlers except for "after" handlers the opportunity to cancel the event and prevent the action function from being called.

Parameters

eventName :  String

The name of the event to fire.

args :  Array

Arguments to pass to handlers and to the action function.

fn :  Function

The action function.

scope :  Object (optional)

The scope (this reference) in which the handler function is executed. If omitted, defaults to the object which fired the event.

options :  Object (optional)

Event options for the action function. Accepts any of the options of addListener

order :  String (optional)

The order to call the action function relative too the event handlers ('before' or 'after'). Note that this option is simply used to sort the action function relative to the event handlers by "priority". An order of 'before' is equivalent to a priority of 99.5, while an order of 'after' is equivalent to a priority of -99.5. See the priority option of addListener for more details.

Defaults to: 'before'

fireEvent ( eventName, args ) : Boolean

Fires the specified event with the passed parameters (minus the event name, plus the options object passed to addListener).

An event may be set to bubble up an Observable parent hierarchy (See Ext.Component#getBubbleTarget) by calling enableBubble.

Parameters

eventName :  String

The name of the event to fire.

args :  Object...

Variable number of parameters are passed to handlers.

Returns

:Boolean

returns false if any of the handlers return false otherwise it returns true.

fireEventArgs ( eventName, args ) : Boolean

Fires the specified event with the passed parameter list.

An event may be set to bubble up an Observable parent hierarchy (See Ext.Component#getBubbleTarget) by calling enableBubble.

Parameters

eventName :  String

The name of the event to fire.

args :  Object[]

An array of parameters which are passed to handlers.

Returns

:Boolean

returns false if any of the handlers return false otherwise it returns true.

fireHierarchyEvent ( eventName )
private pri

This method fires an event on Ext.GlobalEvents allowing interested parties to know of certain critical events for this component. This is done globally because the (few) listeners can immediately receive the event rather than bubbling the event only to reach the top and have no listeners.

The main usage for these events is to do with floating components. For example, the load mask is a floating component. The component it is masking may be inside several containers. As such, they need to know when component is hidden, either directly, or via a parent container being hidden. To do this they subscribe to these events and filter out the appropriate container.

This functionality is contained in Component (as opposed to Container) because a Component can be the ownerCt for a floating component (loadmask), and the loadmask needs to know when its owner is shown/hidden so that its hidden state can be synchronized.

Available since: 4.2.0

Parameters

eventName :  String

The event name.

fixReference
private pri

Sets up a reference on our current reference holder.

focus ( [selectText], [delay], [callback], [scope] ) : Ext.Component
chainable ch

Try to focus this component.

If this component is disabled, a close relation will be targeted for focus instead to keep focus localized for keyboard users.

Parameters

selectText :  Mixed (optional)

If applicable, true to also select all the text in this component, or an array consisting of start and end (defaults to start) position of selection.

delay :  Boolean/Number (optional)

Delay the focus this number of milliseconds (true for 10 milliseconds).

callback :  Function (optional)

Only needed if the delay parameter is used. A function to call upon focus.

scope :  Function (optional)

Only needed if the delay parameter is used. The scope (this reference) in which to execute the callback.

Returns

:Ext.Component

The focused Component. Usually this Component. Some Containers may delegate focus to a descendant Component (Ext.window.Windows can do this through their defaultFocus config option. If this component is disabled, a closely related component will be focused and that will be returned.

forceComponentLayout ( [options] )
deprecated dep

Updates this component's layout. If this update affects this components ownerCt, that component's updateLayout method will be called to perform the layout instead. Otherwise, just this component (and its child items) will layout.

Parameters

options :  Object (optional)

An object with layout options.

defer :  Boolean

true if this layout should be deferred.

isRoot :  Boolean

true if this layout should be the root of the layout.

Deprecated since version 4.1
Use updateLayout instead.

getActiveAnimation Ext.fx.Anim/Boolean

Returns the current animation if this object has any effects actively running or queued, else returns false.

Returns

:Ext.fx.Anim/Boolean

Anim if element has active effects, else false

getAlignToXY ( element, [position], [offsets] ) : Number[]

Gets the x,y coordinates to align this element with another element. See alignTo for more info on the supported position values.

Parameters

element :  Ext.util.Positionable/HTMLElement/String

The Positionable, HTMLElement, or id of the element to align to.

position :  String (optional)

The position to align to

Defaults to: "tl-bl?"

offsets :  Number[] (optional)

Offset the positioning by [x, y]

Returns

:Number[]

[x, y]

getAnchorToXY ( el, [anchor], [local], [size] ) : Number[]
private pri

Gets the x,y coordinates of an element specified by the anchor position on the element.

Parameters

el :  Ext.dom.Element

The element

anchor :  String (optional)

The specified anchor position. See alignTo for details on supported anchor positions.

Defaults to: 'tl'

local :  Boolean (optional)

True to get the local (element top/left-relative) anchor position instead of page coordinates

size :  Object (optional)

An object containing the size to use for calculating anchor position {width: (target width), height: (target height)} (defaults to the element's current size)

Returns

:Number[]

[x, y] An array containing the element's x and y coordinates

getAnchorXY ( [anchor], [local], [size] ) : Number[]

Gets the x,y coordinates specified by the anchor position on the element.

Parameters

anchor :  String (optional)

The specified anchor position. See alignTo for details on supported anchor positions.

Defaults to: 'tl'

local :  Boolean (optional)

True to get the local (element top/left-relative) anchor position instead of page coordinates

size :  Object (optional)

An object containing the size to use for calculating anchor position {width: (target width), height: (target height)} (defaults to the element's current size)

Returns

:Number[]

[x, y] An array containing the element's x and y coordinates

getBorderPadding Object
private pri

Returns the size of the element's borders and padding.

Returns

:Object

an object with the following numeric properties

  • beforeX
  • afterX
  • beforeY
  • afterY

getBox ( [contentBox], [local] ) : Object

Return an object defining the area of this Element which can be passed to setBox to set another Element's size/location to match this element.

Parameters

contentBox :  Boolean (optional)

If true a box for the content of the element is returned.

local :  Boolean (optional)

If true the element's left and top relative to its offsetParent are returned instead of page x/y.

Returns

:Object

An object in the format

x :  Number

The element's X position.

y :  Number

The element's Y position.

width :  Number

The element's width.

height :  Number

The element's height.

bottom :  Number

The element's lower bound.

right :  Number

The element's rightmost bound.

The returned object may also be addressed as an Array where index 0 contains the X position and index 1 contains the Y position. The result may also be used for setXY

getBubbleParent Ext.util.Observable
private pri

Gets the bubbling parent for an Observable

Returns

:Ext.util.Observable

The bubble parent. null is returned if no bubble target exists

getBubbleTarget
protected pro

Implements an upward event bubbling policy. By default a Component bubbles events up to its reference owner.

Component subclasses may implement a different bubbling strategy by overriding this method.

getClientRegion Ext.util.Region

Returns a region object that defines the client area of this element.

That is, the area within any scrollbars.

Returns

:Ext.util.Region

A Region containing "top, left, bottom, right" properties.

getConfig ( [name], [peek] ) : Object

Returns a specified config property value. If the name parameter is not passed, all current configuration options will be returned as key value pairs.

Parameters

name :  String (optional)

The name of the config property to get.

peek :  Boolean (optional)

true to peek at the raw value without calling the getter.

Defaults to: false

Returns

:Object

The config property value.

getConstrainRegion

Returns the content region of this element for purposes of constraining floating children. That is the region within the borders and scrollbars, but not within the padding.

getConstrainVector ( [constrainTo], [proposedPosition], [proposedSize] ) : Number[]/Boolean

Returns the [X, Y] vector by which this Positionable's element must be translated to make a best attempt to constrain within the passed constraint. Returns false if the element does not need to be moved.

Priority is given to constraining the top and left within the constraint.

The constraint may either be an existing element into which the element is to be constrained, or a Ext.util.Region into which this element is to be constrained.

By default, any extra shadow around the element is not included in the constrain calculations - the edges of the element are used as the element bounds. To constrain the shadow within the constrain region, set the constrainShadow property on this element to true.

Parameters

constrainTo :  Ext.util.Positionable/HTMLElement/String/Ext.util.Region (optional)

The Positionable, HTMLElement, element id, or Region into which the element is to be constrained.

proposedPosition :  Number[] (optional)

A proposed [X, Y] position to test for validity and to produce a vector for instead of using the element's current position

proposedSize :  Number[] (optional)

A proposed [width, height] size to constrain instead of using the element's current size

Returns

:Number[]/Boolean

If the element needs to be translated, an [X, Y] vector by which this element must be translated. Otherwise, false.

getEl Ext.dom.Element

Retrieves the top level element representing this component.

Available since: 1.1.0

Returns

:Ext.dom.Element

getFocusClsEl Ext.dom.Element
protected pro

Returns the focus styling holder element associated with this Focusable. By default it is the same element as getFocusEl.

Returns

:Ext.dom.Element

The focus styling element.

getFocusEl Ext.dom.Element
protected pro

Returns the focus holder element associated with this Focusable. At the level of the Focusable base, this function returns this.el (or for Widgets, this.element).

Subclasses with embedded focusable elements (such as Window, Field and Button) should override this for use by focus method.

Returns

:Ext.dom.Element

getFrameInfo Boolean
private pri

On render, reads an encoded style attribute, "filter" from the style of this Component's element. This information is memoized based upon the CSS class name of this Component's element. Because child Components are rendered as textual HTML as part of the topmost Container, a dummy div is inserted into the document to receive the document element's CSS class name, and therefore style attributes.

Returns

:Boolean

getFrameTpl ( table )
private pri

Parameters

table :  Object

getInherited ( [inner] ) : Object

This method returns an object containing the inherited properties for this instance.

Available since: 5.0.0

Parameters

inner :  Boolean (optional)

Pass true to return inheritedStateInner instead of the normal inheritedState object. This is only needed internally and should not be passed by user code.

Defaults to: false

Returns

:Object

The inheritedState object containing inherited properties.

getInheritedConfig ( property, [skipThis] ) : Mixed

This method returns the value of a config property that may be inherited from some ancestor.

In some cases, a config may be explicitly set on a component with the intent of only being presented to its children while that component should act upon the inherited value (see referenceHolder for example). In these cases the skipThis parameter should be specified as true.

Available since: 5.0.0

Parameters

property :  String

The name of the config property to return.

skipThis :  Boolean (optional)

Pass true if the property should be ignored if found on this instance. In other words, true means the property must be inherited and not explicitly set on this instance.

Defaults to: false

Returns

:Mixed

The value of the requested property.

getInitialConfig ( [name] ) : Object/Mixed

Returns the initial configuration passed to the constructor when instantiating this class.

Given this example Ext.button.Button definition and instance:

Ext.define('MyApp.view.Button', {
    extend: 'Ext.button.Button',
    xtype: 'mybutton',

    scale: 'large',
    enableToggle: true
});

var btn = Ext.create({
    xtype: 'mybutton',
    renderTo: Ext.getBody(),
    text: 'Test Button'
});

Calling btn.getInitialConfig() would return an object including the config options passed to the create method:

xtype: 'mybutton',
renderTo: // The document body itself
text: 'Test Button'

Calling btn.getInitialConfig('text')returns 'Test Button'.

Parameters

name :  String (optional)

Name of the config option to return.

Returns

:Object/Mixed

The full config object or a single config value when name parameter specified.

getInsertPosition ( position ) : HTMLElement

This function takes the position argument passed to onRender and returns a DOM element that you can use in the insertBefore.

Parameters

position :  String/Number/Ext.dom.Element/HTMLElement

Index, element id or element you want to put this component before.

Returns

:HTMLElement

DOM element that you can use in the insertBefore

getLocalX Number

Returns the x coordinate of this element reletive to its offsetParent.

Returns

:Number

The local x coordinate

getLocalXY Number[]

Returns the x and y coordinates of this element relative to its offsetParent.

Returns

:Number[]

The local XY position of the element

getLocalY Number

Returns the y coordinate of this element reletive to its offsetParent.

Returns

:Number

The local y coordinate

getMaskTarget
protected pro

Returns the element which is masked by the mask method, or into which the LoadMask is rendered into.

The default implementation uses the maskElement configuration to access the Component's child element by name. By default, maskElement is null which means that null is returned from this method indicating that the mask needs to be rendered into the document because component structure should not be contaminated by mask elements.

Some subclasses may override this method if they have knowledge about external structures where a mask could usefully be rendered.

For example a Ext.view.Table will request that its owning Ext.panel.Table be masked. The GridPanel will have its own implementation of getMaskTarget which will return the element dictated by its own maskElement Panels use "el" as their maskElement by default, but that could be overridden to be "body" to leave toolbars and the header mouse-accessible.

getOffsetsTo ( offsetsTo ) : Number[]

Returns the offsets of this element from the passed element. The element must both be part of the DOM tree and not have display:none to have page coordinates.

Parameters

offsetsTo :  Ext.util.Positionable/HTMLElement/String

The Positionable, HTMLElement, or element id to get get the offsets from.

Returns

:Number[]

The XY page offsets (e.g. [100, -200])

getOverflowEl
private pri

Get an el for overflowing, defaults to the target el

getOverflowStyle
private pri

Returns the CSS style object which will set the Component's scroll styles. This must be applied to the target element.

getPlugin ( pluginId ) : Ext.plugin.Abstract

Retrieves a plugin from this component's collection by its pluginId.

var grid = Ext.create('Ext.grid.Panel', {
    store: {
        fields: ['name'],
        data: [{
            name: 'Scott Pilgrim'
        }]
    },
    columns: [{
        header: 'Name',
        dataIndex: 'name',
        editor: 'textfield',
        flex: 1
    }],
    selType: 'cellmodel',
    plugins: {
        ptype: 'cellediting',
        clicksToEdit: 1,
        pluginId: 'myplugin'
    },
    height: 200,
    width: 400,
    renderTo: Ext.getBody()
});

grid.getPlugin('myplugin');  // the cellediting plugin

Note: See also findPlugin

Parameters

pluginId :  String

The pluginId set on the plugin config object

Returns

:Ext.plugin.Abstract

plugin instance or null if not found

getPosition ( [local] ) : Number[]

Gets the current XY position of the component's underlying element.

Parameters

local :  Boolean (optional)

If true the element's left and top are returned instead of page XY.

Defaults to: false

Returns

:Number[]

The XY position of the element (e.g., [100, 200])

getRefOwner
protected pro

Used by Ext.ComponentQuery, and the up method to find the owning Component in the linkage hierarchy.

By default this returns the Container which contains this Component.

This may be overridden by Component authors who implement ownership hierarchies which are not based upon ownerCt, such as BoundLists being owned by Fields or Menus being owned by Buttons.

getScrollX Number

Returns the "x" scroll position for this component. Only applicable for scrollable components

Returns

:Number

getScrollY Number

Returns the "y" scroll position for this component. Only applicable for scrollable components

Returns

:Number

getSize ( [contentSize] ) : Object

Gets the current size of the component's underlying element.

Parameters

contentSize :  Boolean (optional)

true to get the width/size minus borders and padding

Returns

:Object

An object containing the element's size:

width :  Number

height :  Number

getSizeModel ( ownerCtSizeModel ) : Object
protected pro

Returns an object that describes how this component's width and height are managed. All of these objects are shared and should not be modified.

Parameters

ownerCtSizeModel :  Object

Returns

:Object

The size model for this component.

width :  Ext.layout.SizeModel

The Ext.layout.SizeModel for the width.

height :  Ext.layout.SizeModel

The Ext.layout.SizeModel for the height.

getState Object

The supplied default state gathering method for the Component class.

This method returns dimension settings such as flex, anchor, width and height along with collapsed state.

Subclasses which implement more complex state should call the superclass's implementation, and apply their state to the result if this basic state is to be saved.

Note that Component state will only be saved if the Component has a stateId and there as a StateProvider configured for the document.

Returns

:Object

getStyleProxy ( cls )
private pri

Returns an offscreen div with the same class name as the element this is being rendered. This is because child item rendering takes place in a detached div which, being not part of the document, has no styling.

Parameters

cls :  Object

getTargetEl
private pri

This is used to determine where to insert the 'html', 'contentEl' and 'items' in this component.

getTdCls
private pri

Needed for when widget is rendered into a grid cell. The class to add to the cell element.

getTdType
private pri

Partner method to getTdCls.

Returns the base type for the component. Defaults to return this.xtype, but All derived classes of Ext.form.field.Text can return the type 'textfield', and all derived classes of Ext.button.Button can return the type 'button'

getViewRegion Ext.util.Region

Returns the content region of this element. That is the region within the borders and padding.

Returns

:Ext.util.Region

A Region containing "top, left, bottom, right" member data.

getX Number

Gets the current X position of the DOM element based on page coordinates.

Returns

:Number

The X position of the element

getXType String

Gets the xtype for this component as registered with Ext.ComponentManager. For a list of all available xtypes, see the Ext.Component header. Example usage:

var t = new Ext.form.field.Text();
alert(t.getXType());  // alerts 'textfield'

Returns

:String

The xtype

getXTypes String

Returns this Component's xtype hierarchy as a slash-delimited string. For a list of all available xtypes, see the Ext.Component header.

If using your own subclasses, be aware that a Component must register its own xtype to participate in determination of inherited xtypes.

Example usage:

Available since: 2.3.0

Returns

:String

The xtype hierarchy string

getXY Number[]

Gets the current position of the DOM element based on page coordinates.

Returns

:Number[]

The XY position of the element

getY Number

Gets the current Y position of the DOM element based on page coordinates.

Returns

:Number

The Y position of the element

hasActiveFx Ext.fx.Anim/Boolean
deprecated dep

Returns the current animation if this object has any effects actively running or queued, else returns false.

Returns

:Ext.fx.Anim/Boolean

Anim if element has active effects, else false

Deprecated since version 4.0
Replaced by getActiveAnimation

hasCls ( className ) : Boolean

Checks if the specified CSS class exists on this element's DOM node.

Parameters

className :  String

The CSS class to check for.

Returns

:Boolean

true if the class exists, else false.

hasConfig ( config )
private pri

Parameters

config :  Object

hasListener ( eventName ) : Boolean

Checks to see if this object has any listeners for a specified event, or whether the event bubbles. The answer indicates whether the event needs firing or not.

Parameters

eventName :  String

The name of the event to check for

Returns

:Boolean

true if the event is being listened for or bubbles, else false

hasUICls ( cls )

Checks if there is currently a specified uiCls.

Parameters

cls :  String

The cls to check.

hide ( [animateTarget], [callback], [scope] ) : Ext.Component
chainable ch

Hides this Component, setting it to invisible using the configured hideMode.

Parameters

animateTarget :  String/Ext.dom.Element/Ext.Component (optional)

only valid for cfg-floating Components such as Ext.window.Windows or Ext.tip.ToolTips, or regular Components which have been configured with floating: true.. The target to which the Component should animate while hiding.

Defaults to: null

callback :  Function (optional)

A callback function to call after the Component is hidden.

scope :  Object (optional)

The scope (this reference) in which the callback is executed. Defaults to this Component.

Returns

:Ext.Component

this

initBindable
private pri

This method triggers the lazy configs and must be called when it is time to fully boot up. The configs that must be initialized are: bind, publishes, session, twoWayBindable and viewModel.

Available since: 5.0.0

initComponent
template tpl protected pro

The initComponent template method is an important initialization step for a Component. It is intended to be implemented by each subclass of Ext.Component to provide any needed constructor logic. The initComponent method of the class being created is called first, with each initComponent method up the hierarchy to Ext.Component being called thereafter. This makes it easy to implement and, if needed, override the constructor logic of the Component at any step in the hierarchy.

The initComponent method must contain a call to callParent in order to ensure that the parent class' initComponent method is also called.

All config options passed to the constructor are applied to this before initComponent is called, so you can simply access them with this.someOption.

The following example demonstrates using a dynamic string for the text of a button at the time of instantiation of the class.

Ext.define('DynamicButtonText', {
    extend: 'Ext.button.Button',

    initComponent: function() {
        this.text = new Date();
        this.renderTo = Ext.getBody();
        this.callParent();
    }
});

Ext.onReady(function() {
    Ext.create('DynamicButtonText');
});

Available since: 1.1.0

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

initConfig ( instanceConfig ) : Ext.Base
chainable ch protected pro

Initialize configuration for this class. a typical example:

Ext.define('My.awesome.Class', {
    // The default config
    config: {
        name: 'Awesome',
        isAwesome: true
    },

    constructor: function(config) {
        this.initConfig(config);
    }
});

var awesome = new My.awesome.Class({
    name: 'Super Awesome'
});

alert(awesome.getName()); // 'Super Awesome'

Parameters

instanceConfig :  Object

Returns

:Ext.Base

this

initEvents
protected pro

Initialize any events on this component

initFocusableElement
private pri

Sets up the focus listener on this Component's focusEl if it has one.

Form Components which must implicitly participate in tabbing order usually have a naturally focusable element as their focusEl, and it is the DOM event of that receiving focus which drives the Component's onFocus handling, and the DOM event of it being blurred which drives the onBlur handling.

initFocusableEvents
protected pro

Template method to do any event listener initialization for a Focusable. This generally happens after the focusEl is available.

initInheritedState ( inheritedState )
protected pro

Called by getInherited to initialize the inheritedState the first time it is requested.

Parameters

inheritedState :  Object

initPadding ( targetEl )
private pri

Initializes padding by applying it to the target element, or if the layout manages padding ensures that the padding on the target element is "0".

Parameters

targetEl :  Object

initRenderData Object
protected pro

Initialized the renderData to be used when rendering the renderTpl.

Returns

:Object

Object with keys and values that are going to be applied to the renderTpl

initRenderTpl Ext.XTemplate
private pri

Initializes the renderTpl.

Returns

:Ext.XTemplate

The renderTpl XTemplate instance.

initState
private pri

Initializes the state of the object upon construction.

initStyles ( targetEl )
private pri

Applies padding, margin, border, top, left, height, and width configs to the appropriate elements.

Parameters

targetEl :  Object

invalidateInheritedState
private pri

This method marks the current inherited state as invalid. The next time a call is made to getInherited the objects will be recreated and initialized.

Available since: 5.0.0

is ( selector ) : Boolean

Tests whether this Component matches a Ext.ComponentQuery selector string.

Parameters

selector :  String

The selector string to test against.

Returns

:Boolean

true if this Component matches the selector.

isAncestor ( possibleDescendant ) : Boolean

Determines whether this Component is an ancestor of the passed Component. This will return true if the passed Component is anywhere within the subtree beneath this Component.

Parameters

possibleDescendant :  Ext.Component

The Component to test for presence within this Component's subtree.

Returns

:Boolean

isDescendantOf ( ancestor ) : Boolean

Determines whether this component is the descendant of a passed component.

Parameters

ancestor :  Ext.Component

A Component which may contain this Component.

Returns

:Boolean

true if the component is the descendant of the passed component, otherwise false.

isDisabled Boolean

Method to determine whether this Component is currently disabled.

Returns

:Boolean

the disabled state of this Component.

isDraggable Boolean

Method to determine whether this Component is draggable.

Returns

:Boolean

the draggable state of this component.

isDroppable Boolean

Method to determine whether this Component is droppable.

Returns

:Boolean

the droppable state of this component.

isFloating Boolean

Method to determine whether this Component is floating.

Returns

:Boolean

the floating state of this component.

isFocusable ( [deep] ) : Boolean

Determine if this Focusable can receive focus at this time.

Note that Containers can be non-focusable themselves while delegating focus treatment to a child Component; see Ext.container.Container for more information.

Parameters

deep :  Boolean (optional)

Optionally determine if the container itself is focusable, or if container's focus is delegated to a child component and that child is focusable.

Defaults to: false

Returns

:Boolean

True if component is focusable, false if not.

isHidden Boolean

Method to determine whether this Component is currently set to hidden.

Returns

:Boolean

the hidden state of this Component.

isLayoutChild ( comp ) : Boolean
private pri

Checks if this component will be contained by the passed component as part of its layout run. If true, then the layout on this can be skipped because it will be encompassed when the layout for comp runs. Typical cases where this may be be false is when asking about floaters nested in containers.

Parameters

comp :  Ext.Component

The potential owner.

Returns

:Boolean

true if this component is a layout child of comp.

isLayoutRoot Boolean
protected pro

Determines whether this Component is the root of a layout. This returns true if this component can run its layout without assistance from or impact on its owner. If this component cannot run its layout given these restrictions, false is returned and its owner will be considered as the next candidate for the layout root.

Setting the _isLayoutRoot property to true causes this method to always return true. This may be useful when updating a layout of a Container which shrink wraps content, and you know that it will not change size, and so can safely be the topmost participant in the layout run.

Returns

:Boolean

isLayoutSuspended Boolean

Returns true if layout is suspended for this component. This can come from direct suspension of this component's layout activity (Ext.Container#suspendLayout) or if one of this component's containers is suspended.

Returns

:Boolean

true layout of this component is suspended.

isMasked ( [deep] ) : Boolean

Returns masked state for this Component.

Parameters

deep :  Boolean (optional)

True to look up this Component's parent masked state.

Defaults to: false

Returns

:Boolean

True if masked, false otherwise.

isSuspended ( [event] ) : Boolean

Checks if all events, or a specific event, is suspended.

Parameters

event :  String (optional)

The name of the specific event to check

Returns

:Boolean

true if events are suspended

isVisible ( [deep] ) : Boolean

Returns true if this component is visible.

Available since: 1.1.0

Parameters

deep :  Boolean (optional)

Pass true to interrogate the visibility status of all parent Containers to determine whether this Component is truly visible to the user.

Generally, to determine whether a Component is hidden, the no argument form is needed. For example when creating dynamically laid out UIs in a hidden Container before showing them.

Defaults to: false

Returns

:Boolean

true if this component is visible, false otherwise.

isXType ( xtype, [shallow] ) : Boolean

Tests whether or not this Component is of a specific xtype. This can test whether this Component is descended from the xtype (default) or whether it is directly of the xtype specified (shallow = true).

If using your own subclasses, be aware that a Component must register its own xtype to participate in determination of inherited xtypes.

For a list of all available xtypes, see the Ext.Component header.

Example usage:

Available since: 2.3.0

Parameters

xtype :  String

The xtype to check for this Component

shallow :  Boolean (optional)

true to check whether this Component is directly of the specified xtype, false to check whether this Component is descended from the xtype.

Defaults to: false

Returns

:Boolean

true if this component descends from the specified xtype, false otherwise.

lookupController ( [skipThis] ) : Ext.app.ViewController

Gets the controller that controls this view. May be a controller that belongs to a view higher in the hierarchy.

Available since: 5.0.1

Parameters

skipThis :  Boolean (optional)

true to not consider the controller directly attached to this view (if it exists).

Defaults to: false

Returns

:Ext.app.ViewController

The controller. null if no controller is found.

lookupReferenceHolder ( [skipThis] ) : Ext.app.ViewController/Ext.container.Container
private pri

Gets the Controller or Component that is used as the reference holder for this view.

Available since: 5.0.0

Parameters

skipThis :  Boolean (optional)

false to return this as the reference holder if this instance has set referenceHolder. Unlike getInheritedConfig this method defaults to true because it is possible that a reference property set by the owner of a component that is also a referenceHolder itself. In this case, the reference connects not to this component but to the parent referenceHolder.

Defaults to: true

Returns

:Ext.app.ViewController/Ext.container.Container

The reference holder.

lookupSession ( [skipThis] ) : Ext.data.Session

Returns the Ext.data.Session for this instance. This property may come from this instance's session or be inherited from this object's parent.

Available since: 5.0.0

Parameters

skipThis :  Boolean (optional)

Pass true to ignore a session configured on this instance and only consider an inherited session.

Defaults to: false

Returns

:Ext.data.Session

lookupViewModel ( [skipThis] ) : Ext.app.ViewModel

Returns the Ext.app.ViewModel for this instance. This property may come from this this instance's viewModel or be inherited from this object's parent.

Available since: 5.0.0

Parameters

skipThis :  Boolean (optional)

Pass true to ignore a viewModel configured on this instance and only consider an inherited view model.

Defaults to: false

Returns

:Ext.app.ViewModel

makeBindableUpdater ( cfg ) : Function
private pri

Returns an update method for the given Config that will call publishState to ensure two-way bindings (via bind) as well as any publishes are updated. This method is cached on the cfg instance for re-use.

Available since: 5.0.0

Parameters

cfg :  Ext.Config

Returns

:Function

The updater function.

mask ( [msg], [msgCls] )

Masks this component with a semi-opaque layer and makes the contents unavailable to clicks.

See unmask.

Parameters

msg :  String (optional)

A message to show in the center of the mask layer.

msgCls :  String (optional)

A CSS class name to use on the message element in the center of the layer.

mon ( item, ename, [fn], [scope], [options] ) : Object

Shorthand for addManagedListener. The addManagedListener method is used when some object (call it "A") is listening to an event on another observable object ("B") and you want to remove that listener from "B" when "A" is destroyed. This is not an issue when "B" is destroyed because all of its listeners will be removed at that time.

Example:

Ext.define('Foo', {
    extend: 'Ext.Component',

    initComponent: function () {
        this.addManagedListener(MyApp.SomeGlobalSharedMenu, 'show', this.doSomething);
        this.callParent();
    }
});

As you can see, when an instance of Foo is destroyed, it ensures that the 'show' listener on the menu (MyApp.SomeGlobalSharedMenu) is also removed.

As of version 5.1 it is no longer necessary to use this method in most cases because listeners are automatically managed if the scope object provided to addListener is an Observable instance. However, if the observable instance and scope are not the same object you still need to use mon or addManagedListener if you want the listener to be managed.

Parameters

item :  Ext.util.Observable/Ext.dom.Element

The item to which to add a listener/listeners.

ename :  Object/String

The event name, or an object containing event name properties.

fn :  Function/String (optional)

If the ename parameter was an event name, this is the handler function or the name of a method on the specified scope.

scope :  Object (optional)

If the ename parameter was an event name, this is the scope (this reference) in which the handler function is executed.

options :  Object (optional)

If the ename parameter was an event name, this is the addListener options.

Returns

:Object

Only when the destroyable option is specified.

A Destroyable object. An object which implements the destroy method which removes all listeners added in this call. For example:

this.btnListeners = myButton.mon({
    destroyable: true
    mouseover:   function() { console.log('mouseover'); },
    mouseout:    function() { console.log('mouseout'); },
    click:       function() { console.log('click'); }
});

And when those listeners need to be removed:

Ext.destroy(this.btnListeners);

or

this.btnListeners.destroy();

move ( direction, distance )

Move the element relative to its current position.

Parameters

direction :  String

Possible values are:

  • "l" (or "left")
  • "r" (or "right")
  • "t" (or "top", or "up")
  • "b" (or "bottom", or "down")

distance :  Number

How far to move the element in pixels

mun ( item, ename, [fn], [scope] )

Shorthand for removeManagedListener. Removes listeners that were added by the mon method.

Parameters

item :  Ext.util.Observable/Ext.dom.Element

The item from which to remove a listener/listeners.

ename :  Object/String

The event name, or an object containing event name properties.

fn :  Function (optional)

If the ename parameter was an event name, this is the handler function.

scope :  Object (optional)

If the ename parameter was an event name, this is the scope (this reference) in which the handler function is executed.

nextNode ( [selector] ) : Ext.Component

Returns the next node in the Component tree in tree traversal order.

Note that this is not limited to siblings, and if invoked upon a node with no matching siblings, will walk the tree to attempt to find a match. Contrast with nextSibling.

Parameters

selector :  String (optional)

A Ext.ComponentQuery selector to filter the following nodes.

Returns

:Ext.Component

The next node (or the next node which matches the selector). Returns null if there is no matching node.

nextSibling ( [selector] ) : Ext.Component

Returns the next sibling of this Component.

Optionally selects the next sibling which matches the passed Ext.ComponentQuery selector.

May also be referred to as next()

Note that this is limited to siblings, and if no siblings of the item match, null is returned. Contrast with nextNode

Parameters

selector :  String (optional)

A Ext.ComponentQuery selector to filter the following items.

Returns

:Ext.Component

The next sibling (or the next sibling which matches the selector). Returns null if there is no matching sibling.

on ( eventName, [fn], [scope], [options], [order] ) : Object

The on method is shorthand for addListener.

Appends an event handler to this object. For example:

myGridPanel.on("itemclick", this.onItemClick, this);

The method also allows for a single argument to be passed which is a config object containing properties which specify multiple events. For example:

myGridPanel.on({
    cellclick: this.onCellClick,
    select: this.onSelect,
    viewready: this.onViewReady,
    scope: this // Important. Ensure "this" is correct during handler execution
});

One can also specify options for each event handler separately:

myGridPanel.on({
    cellclick: {fn: this.onCellClick, scope: this, single: true},
    viewready: {fn: panel.onViewReady, scope: panel}
});

Names of methods in a specified scope may also be used:

myGridPanel.on({
    cellclick: {fn: 'onCellClick', scope: this, single: true},
    viewready: {fn: 'onViewReady', scope: panel}
});

Parameters

eventName :  String/Object

The name of the event to listen for. May also be an object who's property names are event names.

fn :  Function/String (optional)

The method the event invokes or the name of the method within the specified scope. Will be called with arguments given to fireEvent plus the options parameter described below.

scope :  Object (optional)

The scope (this reference) in which the handler function is executed. If omitted, defaults to the object which fired the event.

options :  Object (optional)

An object containing handler configuration.

Note: The options object will also be passed as the last argument to every event handler.

This object may contain any of the following properties:

scope :  Object

The scope (this reference) in which the handler function is executed. If omitted, defaults to the object which fired the event.

delay :  Number

The number of milliseconds to delay the invocation of the handler after the event fires.

single :  Boolean

True to add a handler to handle just the next firing of the event, and then remove itself.

buffer :  Number

Causes the handler to be scheduled to run in an Ext.util.DelayedTask delayed by the specified number of milliseconds. If the event fires again within that time, the original handler is not invoked, but the new handler is scheduled in its place.

onFrame :  Number

Causes the handler to be scheduled to run at the next animation frame event. If the event fires again before that time, the handler is not rescheduled - the handler will only be called once when the next animation frame is fired, with the last set of arguments passed.

target :  Ext.util.Observable

Only call the handler if the event was fired on the target Observable, not if the event was bubbled up from a child Observable.

element :  String

This option is only valid for listeners bound to Ext.Component. The name of a Component property which references an Ext.dom.Element to add a listener to.

This option is useful during Component construction to add DOM event listeners to elements of Ext.Component which will exist only after the Component is rendered.

For example, to add a click listener to a Panel's body:

  var panel = new Ext.panel.Panel({
      title: 'The title',
      listeners: {
          click: this.handlePanelClick,
          element: 'body'
      }
  });

In order to remove listeners attached using the element, you'll need to reference the element itself as seen below.

 panel.body.un(...)

delegate :  String (optional)

A simple selector to filter the event target or look for a descendant of the target.

The "delegate" option is only available on Ext.dom.Element instances (or when attaching a listener to a Ext.dom.Element via a Component using the element option).

See the delegate example below.

capture :  Boolean (optional)

When set to true, the listener is fired in the capture phase of the event propagation sequence, instead of the default bubble phase.

The capture option is only available on Ext.dom.Element instances (or when attaching a listener to a Ext.dom.Element via a Component using the element option).

stopPropagation :  Boolean (optional)

This option is only valid for listeners bound to Ext.dom.Element. true to call stopPropagation on the event object before firing the handler.

preventDefault :  Boolean (optional)

This option is only valid for listeners bound to Ext.dom.Element. true to call preventDefault on the event object before firing the handler.

stopEvent :  Boolean (optional)

This option is only valid for listeners bound to Ext.dom.Element. true to call stopEvent on the event object before firing the handler.

args :  Array (optional)

Optional arguments to pass to the handler function. Any additional arguments passed to fireEvent will be appended to these arguments.

destroyable :  Boolean (optional)

When specified as true, the function returns a destroyable object. An object which implements the destroy method which removes all listeners added in this call. This syntax can be a helpful shortcut to using un; particularly when removing multiple listeners. NOTE - not compatible when using the element option. See un for the proper syntax for removing listeners added using the element config.

Defaults to:

false

priority :  Number (optional)

An optional numeric priority that determines the order in which event handlers are run. Event handlers with no priority will be run as if they had a priority of 0. Handlers with a higher priority will be prioritized to run sooner than those with a lower priority. Negative numbers can be used to set a priority lower than the default. Internally, the framework uses a range of 1000 or greater, and -1000 or lesser for handlers that are intended to run before or after all others, so it is recommended to stay within the range of -999 to 999 when setting the priority of event handlers in application-level code. A priority must be an integer to be valid. Fractional values are reserved for internal framework use.

order :  String (optional)

A legacy option that is provided for backward compatibility. It is recommended to use the priority option instead. Available options are:

  • 'before': equal to a priority of 100
  • 'current': equal to a priority of 0 or default priority
  • 'after': equal to a priority of -100

Defaults to:

'current'

order :  String (optional)

A shortcut for the order event option. Provided for backward compatibility. Please use the priority event option instead.

Combining Options

Using the options argument, it is possible to combine different types of listeners:

A delayed, one-time listener.

myPanel.on('hide', this.handleClick, this, {
    single: true,
    delay: 100
});

Attaching multiple handlers in 1 call

The method also allows for a single argument to be passed which is a config object containing properties which specify multiple handlers and handler configs.

grid.on({
    itemclick: 'onItemClick',
    itemcontextmenu: grid.onItemContextmenu,
    destroy: {
        fn: function () {
            // function called within the 'altCmp' scope instead of grid
        },
        scope: altCmp // unique scope for the destroy handler
    },
    scope: grid       // default scope - provided for example clarity
});

Delegate

This is a configuration option that you can pass along when registering a handler for an event to assist with event delegation. By setting this configuration option to a simple selector, the target element will be filtered to look for a descendant of the target. For example:

var panel = Ext.create({
    xtype: 'panel',
    renderTo: document.body,
    title: 'Delegate Handler Example',
    frame: true,
    height: 220,
    width: 220,
    html: '<h1 class="myTitle">BODY TITLE</h1>Body content'
});

// The click handler will only be called when the click occurs on the
// delegate: h1.myTitle ("h1" tag with class "myTitle")
panel.on({
    click: function (e) {
        console.log(e.getTarget().innerHTML);
    },
    element: 'body',
    delegate: 'h1.myTitle'
 });

Defaults to: 'current'

Returns

:Object

Only when the destroyable option is specified.

A Destroyable object. An object which implements the destroy method which removes all listeners added in this call. For example:

this.btnListeners =  = myButton.on({
    destroyable: true
    mouseover:   function() { console.log('mouseover'); },
    mouseout:    function() { console.log('mouseout'); },
    click:       function() { console.log('click'); }
});

And when those listeners need to be removed:

Ext.destroy(this.btnListeners);

or

this.btnListeners.destroy();

onAdded ( container, pos, instanced )
template tpl protected pro

Method to manage awareness of when components are added to their respective Container, firing an #added event. References are established at add time rather than at render time.

Allows addition of behavior when a Component is added to a Container. At this stage, the Component is in the parent Container's collection of child items. After calling the superclass's onAdded, the ownerCt reference will be present, and if configured with a ref, the refOwner will be set.

Available since: 3.4.0

Parameters

container :  Ext.container.Container

Container which holds the component.

pos :  Number

Position at which the component was added.

instanced :  Boolean

false if this component was instanced by the parent container. true if the instance already existed when it was passed to the container.

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onAfter ( eventName, fn, [scope], [options] )
deprecated dep

Alias for addAfterListener. Appends an after-event handler.

Same as addListener with order set to 'after'.

Parameters

eventName :  String/String[]/Object

The name of the event to listen for.

fn :  Function/String

The method the event invokes.

scope :  Object (optional)

The scope for fn.

options :  Object (optional)

An object containing handler configuration.

Deprecated since version 5.1
Use on instead.

onBefore ( eventName, fn, [scope], [options] )
deprecated dep

Alias for addBeforeListener. Appends a before-event handler. Returning false from the handler will stop the event.

Same as addListener with order set to 'before'.

Parameters

eventName :  String/String[]/Object

The name of the event to listen for.

fn :  Function/String

The method the event invokes.

scope :  Object (optional)

The scope for fn.

options :  Object (optional)

An object containing handler configuration.

Deprecated since version 5.1
Use on instead.

onBoxReady ( width, height )
template tpl protected pro

Invoked when this component has first achieved size. Occurs after the componentLayout has completed its initial run.

This method is not called on components that use liquidLayout, such as Ext.button.Button and Ext.form.field.Base.

Note: If the Component has a ViewController and the controller has a boxReady method it will be called passing the Component as the single param.

Parameters

width :  Number

The width of this component

height :  Number

The height of this component

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onDestroy
template tpl protected pro

Allows addition of behavior to the destroy operation. After calling the superclass's onDestroy, the Component will be destroyed.

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onDisable
template tpl protected pro

Allows addition of behavior to the disable operation. After calling the superclass's onDisable, the Component will be disabled.

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onEnable
template tpl protected pro

Allows addition of behavior to the enable operation. After calling the superclass's onEnable, the Component will be enabled.

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onFocusEnter ( e )
template tpl protected pro

Called when focus enters this Component's hierarchy

Parameters

e :  Ext.event.Event

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onFocusLeave ( e )
template tpl protected pro

Called when focus exits from this Component's hierarchy

Parameters

e :  Ext.event.Event

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onHide ( [animateTarget], [callback], [scope] )
template tpl protected pro

Allows addition of behavior to the hide operation. After calling the superclass's onHide, the Component will be hidden.

Gets passed the same parameters as #hide.

Parameters

animateTarget :  String/Ext.dom.Element/Ext.Component (optional)

callback :  Function (optional)

scope :  Object (optional)

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onPosition ( x, y )
template tpl protected pro

Called after the component is moved, this method is empty by default but can be implemented by any subclass that needs to perform custom logic after a move occurs.

Parameters

x :  Number

The new x position.

y :  Number

The new y position.

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onRemoved ( destroying )
template tpl protected pro

Method to manage awareness of when components are removed from their respective Container, firing a #removed event. References are properly cleaned up after removing a component from its owning container.

Allows addition of behavior when a Component is removed from its parent Container. At this stage, the Component has been removed from its parent Container's collection of child items, but has not been destroyed (It will be destroyed if the parent Container's autoDestroy is true, or if the remove call was passed a truthy second parameter). After calling the superclass's onRemoved, the ownerCt and the refOwner will not be present.

Available since: 3.4.0

Parameters

destroying :  Boolean

Will be passed as true if the Container performing the remove operation will delete this Component upon remove.

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onRender ( parentNode, containerIdx )
template tpl protected pro

Template method called when this Component's DOM structure is created.

At this point, this Component's (and all descendants') DOM structure exists but it has not been layed out (positioned and sized).

Subclasses which override this to gain access to the structure at render time should call the parent class's method before attempting to access any child elements of the Component.

Parameters

parentNode :  Ext.dom.Element

The parent Element in which this Component's encapsulating element is contained.

containerIdx :  Number

The index within the parent Container's child collection of this Component.

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onResize ( width, height, oldWidth, oldHeight )
template tpl protected pro

Called when the component is resized.

This method is not called on components that use liquidLayout, such as Ext.button.Button and Ext.form.field.Base.

Parameters

width :  Number

The new width that was set

height :  Number

The new height that was set

oldWidth :  Number

The previous width

oldHeight :  Number

The previous height

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onScrollEnd ( x, y )
template tpl protected pro

Invoked when a scroll operation is completed via this component's scroller.

Parameters

x :  Number

The current x position

y :  Number

The current y position

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onScrollMove ( x, y )
template tpl protected pro

Invoked when this component is scrolled via its scroller.

Parameters

x :  Number

The current x position

y :  Number

The current y position

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onScrollStart ( x, y )
template tpl protected pro

Invoked when a scroll is initiated on this component via its scroller.

Parameters

x :  Number

The current x position

y :  Number

The current y position

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onShow ( [animateTarget], [callback], [scope] )
template tpl protected pro

Allows addition of behavior to the show operation. After calling the superclass's onShow, the Component will be visible.

Override in subclasses where more complex behaviour is needed.

Gets passed the same parameters as #show.

Parameters

animateTarget :  String/Ext.dom.Element (optional)

callback :  Function (optional)

scope :  Object (optional)

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onShowComplete ( [callback], [scope] )
template tpl protected pro

Invoked after the #afterShow method is complete.

Gets passed the same callback and scope parameters that #afterShow received.

Parameters

callback :  Function (optional)

scope :  Object (optional)

This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

onStateChange
private pri

This method is called when any of the stateEvents are fired.

owns ( element )
private pri

Returns true if the passed element is within the container tree of this component.

For example if a menu's submenu contains an Ext.form.field.Date, that top level menu owns the elements of the date picker. Using this method, you can tell if an event took place within a certain component tree.

Parameters

element :  Object

previousNode ( [selector] ) : Ext.Component

Returns the previous node in the Component tree in tree traversal order.

Note that this is not limited to siblings, and if invoked upon a node with no matching siblings, will walk the tree in reverse order to attempt to find a match. Contrast with previousSibling.

Parameters

selector :  String (optional)

A Ext.ComponentQuery selector to filter the preceding nodes.

Returns

:Ext.Component

The previous node (or the previous node which matches the selector). Returns null if there is no matching node.

previousSibling ( [selector] ) : Ext.Component

Returns the previous sibling of this Component.

Optionally selects the previous sibling which matches the passed Ext.ComponentQuery selector.

May also be referred to as prev()

Note that this is limited to siblings, and if no siblings of the item match, null is returned. Contrast with previousNode

Parameters

selector :  String (optional)

A Ext.ComponentQuery selector to filter the preceding items.

Returns

:Ext.Component

The previous sibling (or the previous sibling which matches the selector). Returns null if there is no matching sibling.

publishState ( [property], [value] )
protected pro

Publish this components state to the ViewModel. If no arguments are given (or if this is the first call), the entire state is published. This state is determined by the publishes property.

This method is called only by component authors.

Available since: 5.0.0

Parameters

property :  String (optional)

The name of the property to update.

value :  Object (optional)

The value of property. Only needed if property is given.

refreshScroll
private pri

Implementation which updates the scroll range of a touch scroller. Subclasses may change implementation.

registerFloatingItem ( cmp )

Called by Component#doAutoRender

Register a Container configured floating: true with this Component's Ext.ZIndexManager.

Components added in this way will not participate in any layout, but will be rendered upon first show in the way that Ext.window.Windows are.

Parameters

cmp :  Object

relayEvents ( origin, events, [prefix] ) : Object

Relays selected events from the specified Observable as if the events were fired by this.

For example if you are extending Grid, you might decide to forward some events from store. So you can do this inside your initComponent:

this.relayEvents(this.getStore(), ['load']);

The grid instance will then have an observable 'load' event which will be passed the parameters of the store's load event and any function fired with the grid's load event would have access to the grid using the this keyword (unless the event is handled by a controller's control/listen event listener in which case 'this' will be the controller rather than the grid).

Parameters

origin :  Object

The Observable whose events this object is to relay.

events :  String[]

Array of event names to relay.

prefix :  String (optional)

A common prefix to prepend to the event names. For example:

this.relayEvents(this.getStore(), ['load', 'clear'], 'store');

Now the grid will forward 'load' and 'clear' events of store as 'storeload' and 'storeclear'.

Returns

:Object

A Destroyable object. An object which implements the destroy method which, when destroyed, removes all relayers. For example:

this.storeRelayers = this.relayEvents(this.getStore(), ['load', 'clear'], 'store');

Can be undone by calling

Ext.destroy(this.storeRelayers);

or this.store.relayers.destroy();

removeAfterListener ( eventName, fn, [scope], [options] )
deprecated dep

Removes a before-event handler.

Same as removeListener with order set to 'after'.

Parameters

eventName :  String/String[]/Object

The name of the event the handler was associated with.

fn :  Function/String

The handler to remove.

scope :  Object (optional)

The scope originally specified for fn.

options :  Object (optional)

Extra options object.

Deprecated since version 5.1
Use removeListener instead.

removeBeforeListener ( eventName, fn, [scope], [options] )
deprecated dep

Removes a before-event handler.

Same as removeListener with order set to 'before'.

Parameters

eventName :  String/String[]/Object

The name of the event the handler was associated with.

fn :  Function/String

The handler to remove.

scope :  Object (optional)

The scope originally specified for fn.

options :  Object (optional)

Extra options object.

Deprecated since version 5.1
Use removeListener instead.

removeClass ( cls ) : Ext.Component
deprecated dep

Removes a CSS class from the top level element representing this component.

Available since: 2.3.0

Parameters

cls :  String/String[]

The CSS class name to remove.

Returns

:Ext.Component

Returns the Component to allow method chaining.

Deprecated since version 4.1
Use addCls instead.

removeCls ( cls ) : Ext.Component
chainable ch

Removes a CSS class from the top level element representing this component.

Parameters

cls :  String/String[]

The CSS class name to remove.

Returns

:Ext.Component

Returns the Component to allow method chaining.

removeClsWithUI ( cls )

Removes a cls to the uiCls array, which will also call removeUIClsFromElement and removes it from all elements of this component.

Parameters

cls :  String/String[]

A string or an array of strings to remove to the uiCls.

removeListener ( eventName, fn, [scope] ) :
chainable ch

Removes an event handler.

Parameters

eventName :  String

The type of event the handler was associated with.

fn :  Function

The handler to remove. This must be a reference to the function passed into the addListener call.

scope :  Object (optional)

The scope originally specified for the handler. It must be the same as the scope argument specified in the original call to addListener or the listener will not be removed.

Convenience Syntax

You can use the addListener destroyable: true config option in place of calling un(). For example:

var listeners = cmp.on({
    scope: cmp,
    afterrender: cmp.onAfterrender,
    beforehide: cmp.onBeforeHide,
    destroyable: true
});

// Remove listeners
listeners.destroy();
// or
cmp.un(
    scope: cmp,
    afterrender: cmp.onAfterrender,
    beforehide: cmp.onBeforeHide
);

Exception - DOM event handlers using the element config option

You must go directly through the element to detach an event handler attached using the addListener element option.

panel.on({
    element: 'body',
    click: 'onBodyCLick'
});

panel.body.un({
    click: 'onBodyCLick'
});

Returns

:

removeManagedListener ( item, ename, [fn], [scope] )

Removes listeners that were added by the mon method.

Parameters

item :  Ext.util.Observable/Ext.dom.Element

The item from which to remove a listener/listeners.

ename :  Object/String

The event name, or an object containing event name properties.

fn :  Function (optional)

If the ename parameter was an event name, this is the handler function.

scope :  Object (optional)

If the ename parameter was an event name, this is the scope (this reference) in which the handler function is executed.

removeManagedListenerItem ( isClear, managedListener )
private pri

Remove a single managed listener item

Parameters

isClear :  Boolean

True if this is being called during a clear

managedListener :  Object

The managed listener item See removeManagedListener for other args

removeUIClsFromElement ( uiCls )
protected pro

Method which removes a specified UI + uiCls from the components element. The cls which is added to the element will be: this.baseCls + '-' + ui + uiCls.

Parameters

uiCls :  String

The UI class to remove from the element.

removeUIFromElement
private pri

Method which removes a specified UI from the components element.

render ( [container], [position] )

Renders the Component into the passed HTML element.

If you are using a Ext.container.Container object to house this Component, then do not use the render method.

A Container's child Components are rendered by that Container's layout manager when the Container is first rendered.

If the Container is already rendered when a new child Component is added, you may need to call the Container's doLayout to refresh the view which causes any unrendered child Components to be rendered. This is required so that you can add multiple child components if needed while only refreshing the layout once.

When creating complex UIs, it is important to remember that sizing and positioning of child items is the responsibility of the Container's layout manager. If you expect child items to be sized in response to user interactions, you must configure the Container with a layout manager which creates and manages the type of layout you have in mind.

Omitting the Container's layout config means that a basic layout manager is used which does nothing but render child components sequentially into the Container. No sizing or positioning will be performed in this situation.

Parameters

container :  Ext.dom.Element/HTMLElement/String (optional)

The element this Component should be rendered into. If it is being created from existing markup, this should be omitted.

position :  String/Number (optional)

The element ID or DOM node index within the container before which this component will be inserted (defaults to appending to the end of the container)

resolveListenerScope ( [defaultScope] ) : Ext.app.ViewController/Ext.container.Container
protected pro

Gets the Controller or Component that is used as the event root for this view.

Available since: 5.0.0

Parameters

defaultScope :  Object (optional)

The default scope to return if none is found.

Defaults to: this

Returns

:Ext.app.ViewController/Ext.container.Container

The default listener scope.

resolveSatelliteListenerScope ( satellite, [defaultScope] ) : Object
protected pro

Returns the default listener scope for a "satellite" of this component. Used for resolving scope for observable objects that are not part of the normal Container/Component hierarchy (for example, plugins)

Available since: 5.1.1

Parameters

satellite :  Ext.mixin.Observable

defaultScope :  Object (optional)

Returns

:Object

The listener scope

resumeEvent ( eventName )

Resumes firing of the named event(s).

After calling this method to resume events, the events will fire when requested to fire.

Note that if the suspendEvent method is called multiple times for a certain event, this converse method will have to be called the same number of times for it to resume firing.

Parameters

eventName :  String...

Multiple event names to resume.

resumeEvents ( [discardQueue] )

Resumes firing events (see suspendEvents).

If events were suspended using the queueSuspended parameter, then all events fired during event suspension will be sent to any listeners now.

Parameters

discardQueue :  Boolean (optional)

true to prevent any previously queued events from firing while we were suspended. See suspendEvents.

reverseTranslateXY ( xy ) : Number[]
private pri

Converts local coordinates into page-level coordinates

Parameters

xy :  Number[]

The local x and y coordinates

Returns

:Number[]

The translated coordinates

revertFocus
private pri

Returns focus to the cached previously focused Component or element.

Usually called by onHide.

savePropToState ( propName, state, [stateName] ) : Boolean

Conditionally saves a single property from this object to the given state object. The idea is to only save state which has changed from the initial state so that current software settings do not override future software settings. Only those values that are user-changed state should be saved.

Parameters

propName :  String

The name of the property to save.

state :  Object

The state object in to which to save the property.

stateName :  String (optional)

The name to use for the property in state.

Returns

:Boolean

True if the property was saved, false if not.

savePropsToState ( propNames, state ) : Object

Gathers additional named properties of the instance and adds their current values to the passed state object.

Parameters

propNames :  String/String[]

The name (or array of names) of the property to save.

state :  Object

The state object in to which to save the property values.

Returns

:Object

state

saveState

Saves the state of the object to the persistence store.

scrollBy ( deltaX, deltaY, animate )

Scrolls this Component by the passed delta values, optionally animating.

All of the following are equivalent:

 comp.scrollBy(10, 10, true);
 comp.scrollBy([10, 10], true);
 comp.scrollBy({ x: 10, y: 10 }, true);

Parameters

deltaX :  Number/Number[]/Object

Either the x delta, an Array specifying x and y deltas or an object with "x" and "y" properties.

deltaY :  Number/Boolean/Object

Either the y delta, or an animate flag or config object.

animate :  Boolean/Object

Animate flag/config object if the delta values were passed separately.

scrollTo ( x, y, [animate] )

Scrolls this component to the specified x and y coordinates. Only applicable for scrollable components.

Parameters

x :  Number

y :  Number

animate :  Boolean/Object (optional)

true for the default animation or a standard Element animation config object

sequenceFx Object
chainable ch

Ensures that all effects queued after sequenceFx is called on this object are run in sequence. This is the opposite of syncFx.

Returns

:Object

this

setActive ( [active], [doFocus] )
private pri

This method is called internally by Ext.ZIndexManager to signal that a floating Component has either been moved to the top of its zIndex stack, or pushed from the top of its zIndex stack.

If a Window is superceded by another Window, deactivating it hides its shadow.

This method also fires the activate or deactivate event depending on which action occurred.

Parameters

active :  Boolean (optional)

True to activate the Component, false to deactivate it.

Defaults to: false

doFocus :  Boolean (optional)

When activating, set to true to focus the component; when deactivating, set to false to avoid returning focus to previous element.

setBox ( box ) : Ext.util.Positionable
chainable ch

Sets the element's box.

Parameters

box :  Object

The box to fill {x, y, width, height}

Returns

:Ext.util.Positionable

this

setConfig ( name, [value] ) : Ext.Base
chainable ch

Sets a single/multiple configuration options.

Parameters

name :  String/Object

The name of the property to set, or a set of key value pairs to set.

value :  Object (optional)

The value to set for the name parameter.

Returns

:Ext.Base

this

setDocked ( dock ) : Ext.Component
deprecated dep

Sets the dock position of this component in its parent panel. Note that this only has effect if this item is part of the dockedItems collection of a parent that has a DockLayout (note that any Panel has a DockLayout by default)

Parameters

dock :  Object

The dock position.

Returns

:Ext.Component

this

Deprecated since version 5.0
Use setDock instead.

setLoading ( load ) : Ext.LoadMask

This method allows you to show or hide a LoadMask on top of this component.

The mask will be rendered into the element returned by getMaskTarget which for most Components is the Component's element. See getMaskTarget and maskElement.

Most Components will return null indicating that their LoadMask cannot reside inside their element, but must be rendered into the document body.

Ext.view.Table however will direct a LoadMask to be rendered into the owning Ext.panel.Table.

Parameters

load :  Boolean/Object/String

True to show the default LoadMask, a config object that will be passed to the LoadMask constructor, or a message String to show. False to hide the current LoadMask.

Returns

:Ext.LoadMask

The LoadMask instance that has just been shown.

setLocalX ( x ) : Ext.util.Positionable

Sets the local x coordinate of this element using CSS style. When used on an absolute positioned element this method is symmetrical with getLocalX, but may not be symmetrical when used on a relatively positioned element.

Parameters

x :  Number

The x coordinate. A value of null sets the left style to 'auto'.

Returns

:Ext.util.Positionable

this

setLocalXY ( x, [y] ) : Ext.util.Positionable

Sets the local x and y coordinates of this element using CSS style. When used on an absolute positioned element this method is symmetrical with getLocalXY, but may not be symmetrical when used on a relatively positioned element.

Parameters

x :  Number/Array

The x coordinate or an array containing [x, y]. A value of null sets the left style to 'auto'

y :  Number (optional)

The y coordinate, required if x is not an array. A value of null sets the top style to 'auto'

Returns

:Ext.util.Positionable

this

setLocalY ( y ) : Ext.util.Positionable

Sets the local y coordinate of this element using CSS style. When used on an absolute positioned element this method is symmetrical with getLocalY, but may not be symmetrical when used on a relatively positioned element.

Parameters

y :  Number

The y coordinate. A value of null sets the top style to 'auto'.

Returns

:Ext.util.Positionable

this

setMasked ( isMasked ) :
chainable ch private pri

Set masked state for this Component.

Parameters

isMasked :  Boolean

True if masked, false otherwise.

Returns

:

setOverflowXY ( overflowX, overflowY ) : Ext.Component
chainable ch deprecated dep

Sets the overflow x/y on the content element of the component. The x/y overflow values can be any valid CSS overflow (e.g., 'auto' or 'scroll'). By default, the value is 'hidden'. Passing undefined will preserve the current value.

Parameters

overflowX :  String

The overflow-x value.

overflowY :  String

The overflow-y value.

Returns

:Ext.Component

this

Deprecated since version 5.0.0
Use setScrollable instead

setPagePosition ( x, [y], [animate] ) : Ext.Component
chainable ch

Sets the page XY position of the component. To set the left and top instead, use setPosition. This method fires the event-move event.

Parameters

x :  Number/Number[]

The new x position or an array of [x,y].

y :  Number (optional)

The new y position.

animate :  Boolean/Object (optional)

True to animate the Component into its new position. You may also pass an animation configuration.

Returns

:Ext.Component

this

setPosition ( x, [y], [animate] ) : Ext.Component
chainable ch

Sets the left and top of the component. To set the page XY position instead, use setPagePosition. This method fires the event-move event.

Parameters

x :  Number/Number[]/Object

The new left, an array of [x,y], or animation config object containing x and y properties.

y :  Number (optional)

The new top.

animate :  Boolean/Object (optional)

If true, the Component is animated into its new position. You may also pass an animation configuration.

Returns

:Ext.Component

this

setScrollX ( x, [animate] )

Sets the "x" scroll position for this component. Only applicable for scrollable components

Parameters

x :  Number

animate :  Boolean/Object (optional)

true for the default animation or a standard Element animation config object

setScrollY ( y, [animate] )

Sets the "y" scroll position for this component. Only applicable for scrollable components

Parameters

y :  Number

animate :  Boolean/Object (optional)

true for the default animation or a standard Element animation config object

setSize ( width, height ) : Ext.Component
chainable ch

Sets the width and height of this Component. This method fires the resize event. This method can accept either width and height as separate arguments, or you can pass a size object like {width:10, height:20}.

Parameters

width :  Number/String/Object

The new width to set. This may be one of:

  • A Number specifying the new width in pixels.
  • A String used to set the CSS width style.
  • A size object in the format {width: widthValue, height: heightValue}.
  • undefined to leave the width unchanged.

height :  Number/String

The new height to set (not required if a size object is passed as the first arg). This may be one of:

  • A Number specifying the new height in pixels.
  • A String used to set the CSS height style. Animation may not be used.
  • undefined to leave the height unchanged.

Returns

:Ext.Component

this

setVisible ( visible ) : Ext.Component
chainable ch

Convenience function to hide or show this component by Boolean.

Available since: 1.1.0

Parameters

visible :  Boolean

true to show, false to hide.

Returns

:Ext.Component

this

setX ( x ) : Ext.util.Positionable

Sets the X position of the DOM element based on page coordinates.

Parameters

x :  Number

The X position

Returns

:Ext.util.Positionable

this

setXY ( pos ) : Ext.util.Positionable

Sets the position of the DOM element in page coordinates.

Parameters

pos :  Number[]

Contains X & Y [x, y] values for new position (coordinates are page-based)

Returns

:Ext.util.Positionable

this

setY ( y ) : Ext.util.Positionable

Sets the Y position of the DOM element based on page coordinates.

Parameters

y :  Number

The Y position

Returns

:Ext.util.Positionable

this

setupFramingTpl ( frameTpl )
private pri

Inject a reference to the function which applies the render template into the framing template. The framing template wraps the content.

Parameters

frameTpl :  Object

show ( [animateTarget], [callback], [scope] ) : Ext.Component
chainable ch

Shows this Component, rendering it first if autoRender or floating are true.

After being shown, a floating Component (such as a Ext.window.Window), is activated it and brought to the front of its z-index stack.

Parameters

animateTarget :  String/Ext.dom.Element (optional)

The target from which the Component should animate from while opening. only valid for floating Components such as Ext.window.Window or Ext.tip.ToolTip, or regular Components which have been configured with floating: true.

Defaults to: null

callback :  Function (optional)

A callback function to call after the Component is displayed. Only necessary if animation was specified.

scope :  Object (optional)

The scope (this reference) in which the callback is executed. Defaults to this Component.

Returns

:Ext.Component

this

showAt ( x, [y], [animate] ) : Ext.Component

Displays component at specific xy position. A floating component (like a menu) is positioned relative to its ownerCt if any. Useful for popping up a context menu:

listeners: {
    itemcontextmenu: function(view, record, item, index, event, options) {
        Ext.create('Ext.menu.Menu', {
            width: 100,
            height: 100,
            margin: '0 0 10 0',
            items: [{
                text: 'regular item 1'
            },{
                text: 'regular item 2'
            },{
                text: 'regular item 3'
            }]
        }).showAt(event.getXY());
    }
}

Parameters

x :  Number/Number[]

The new x position or array of [x,y].

y :  Number (optional)

The new y position

animate :  Boolean/Object (optional)

True to animate the Component into its new position. You may also pass an animation configuration.

Returns

:Ext.Component

this

showBy ( component, [position], [offsets] ) : Ext.Component
chainable ch

Shows this component by the specified Ext.Component or Ext.dom.Element. Used when this component is floating.

Parameters

component :  Ext.Component/Ext.dom.Element

The Ext.Component or Ext.dom.Element to show the component by.

position :  String (optional)

Alignment position as used by Ext.util.Positionable#getAlignToXY. Defaults to defaultAlign. See alignTo for possible values.

offsets :  Number[] (optional)

Alignment offsets as used by Ext.util.Positionable#getAlignToXY. See alignTo for possible values.

Returns

:Ext.Component

this

statics Ext.Class
protected pro

Get the reference to the class from which this object was instantiated. Note that unlike Ext.Base#self, this.statics() is scope-independent and it always returns the class from which it was called, regardless of what this points to during run-time

Ext.define('My.Cat', {
    statics: {
        totalCreated: 0,
        speciesName: 'Cat' // My.Cat.speciesName = 'Cat'
    },

    constructor: function() {
        var statics = this.statics();

        alert(statics.speciesName);     // always equals to 'Cat' no matter what 'this' refers to
                                        // equivalent to: My.Cat.speciesName

        alert(this.self.speciesName);   // dependent on 'this'

        statics.totalCreated++;
    },

    clone: function() {
        var cloned = new this.self();   // dependent on 'this'

        cloned.groupName = this.statics().speciesName;   // equivalent to: My.Cat.speciesName

        return cloned;
    }
});


Ext.define('My.SnowLeopard', {
    extend: 'My.Cat',

    statics: {
        speciesName: 'Snow Leopard'     // My.SnowLeopard.speciesName = 'Snow Leopard'
    },

    constructor: function() {
        this.callParent();
    }
});

var cat = new My.Cat();                 // alerts 'Cat', then alerts 'Cat'

var snowLeopard = new My.SnowLeopard(); // alerts 'Cat', then alerts 'Snow Leopard'

var clone = snowLeopard.clone();
alert(Ext.getClassName(clone));         // alerts 'My.SnowLeopard'
alert(clone.groupName);                 // alerts 'Cat'

alert(My.Cat.totalCreated);             // alerts 3

Returns

:Ext.Class

stopAnimation Ext.dom.Element
chainable ch

Stops any running effects and clears this object's internal effects queue if it contains any additional effects that haven't started yet.

Returns

:Ext.dom.Element

The Element

stopFx Ext.dom.Element
deprecated dep

Stops any running effects and clears this object's internal effects queue if it contains any additional effects that haven't started yet.

Returns

:Ext.dom.Element

The Element

Deprecated since version 4.0
Replaced by stopAnimation

suspendEvent ( eventName )

Suspends firing of the named event(s).

After calling this method to suspend events, the events will no longer fire when requested to fire.

Note that if this is called multiple times for a certain event, the converse method resumeEvent will have to be called the same number of times for it to resume firing.

Parameters

eventName :  String...

Multiple event names to suspend.

suspendEvents ( queueSuspended )

Suspends the firing of all events. (see resumeEvents)

Parameters

queueSuspended :  Boolean

true to queue up suspended events to be fired after the resumeEvents call instead of discarding all suspended events.

syncFx Object
chainable ch

Ensures that all effects queued after syncFx is called on this object are run concurrently. This is the opposite of sequenceFx.

Returns

:Object

this

syncHidden
private pri

synchronizes the hidden state of this component with the state of its hierarchy

toBack Ext.Component
chainable ch

Sends this Component to the back of (lower z-index than) any other visible windows

Returns

:Ext.Component

this

toFront ( [preventFocus] ) : Ext.Component
chainable ch

Brings this floating Component to the front of any other visible, floating Components managed by the same Ext.ZIndexManager

If this Component is modal, inserts the modal mask just below this Component in the z-index stack.

Parameters

preventFocus :  Boolean (optional)

Specify true to prevent the Component from being focused.

Defaults to: false

Returns

:Ext.Component

this

translatePoints ( x, [y] ) : Object

Translates the passed page coordinates into left/top css values for the element

Parameters

x :  Number/Array

The page x or an array containing [x, y]

y :  Number (optional)

The page y, required if x is not an array

Returns

:Object

An object with left and top properties. e.g. {left: (value), top: (value)}

translateXY ( x, [y] ) : Object
private pri

Translates the passed page coordinates into x and y css values for the element

Parameters

x :  Number/Array

The page x or an array containing [x, y]

y :  Number (optional)

The page y, required if x is not an array

Returns

:Object

An object with x and y properties. e.g. {x: (value), y: (value)}

un ( eventName, fn, [scope] ) :

Shorthand for removeListener. Removes an event handler.

Parameters

eventName :  String

The type of event the handler was associated with.

fn :  Function

The handler to remove. This must be a reference to the function passed into the addListener call.

scope :  Object (optional)

The scope originally specified for the handler. It must be the same as the scope argument specified in the original call to addListener or the listener will not be removed.

Convenience Syntax

You can use the addListener destroyable: true config option in place of calling un(). For example:

var listeners = cmp.on({
    scope: cmp,
    afterrender: cmp.onAfterrender,
    beforehide: cmp.onBeforeHide,
    destroyable: true
});

// Remove listeners
listeners.destroy();
// or
cmp.un(
    scope: cmp,
    afterrender: cmp.onAfterrender,
    beforehide: cmp.onBeforeHide
);

Exception - DOM event handlers using the element config option

You must go directly through the element to detach an event handler attached using the addListener element option.

panel.on({
    element: 'body',
    click: 'onBodyCLick'
});

panel.body.un({
    click: 'onBodyCLick'
});

Returns

:

unAfter ( eventName, fn, [scope], [options] )
deprecated dep

Alias for removeAfterListener. Removes a before-event handler.

Same as removeListener with order set to 'after'.

Parameters

eventName :  String/String[]/Object

The name of the event the handler was associated with.

fn :  Function/String

The handler to remove.

scope :  Object (optional)

The scope originally specified for fn.

options :  Object (optional)

Extra options object.

Deprecated since version 5.1
Use un instead.

unBefore ( eventName, fn, [scope], [options] )
deprecated dep

Alias for removeBeforeListener. Removes a before-event handler.

Same as removeListener with order set to 'before'.

Parameters

eventName :  String/String[]/Object

The name of the event the handler was associated with.

fn :  Function/String

The handler to remove.

scope :  Object (optional)

The scope originally specified for fn.

options :  Object (optional)

Extra options object.

Deprecated since version 5.1
Use un instead.

unmask

Removes the mask applied by mask

up ( [selector], [limit] ) : Ext.container.Container

Navigates up the ownership hierarchy searching for an ancestor Container which matches any passed selector or component.

Important. There is not a universal upwards navigation pointer. There are several upwards relationships such as the Ext.button.Button which activates a menu, or the Ext.menu.Item which activated a submenu, or the Ext.grid.column.Column which activated the column menu.

These differences are abstracted away by this method.

Example:

var owningTabPanel = grid.up('tabpanel');

Parameters

selector :  String/Ext.Component (optional)

The selector component or actual component to test. If not passed the immediate owner/activator is returned.

limit :  String/Number/Ext.Component (optional)

This may be a selector upon which to stop the upward scan, or a limit of the number of steps, or Component reference to stop on.

Returns

:Ext.container.Container

The matching ancestor Container (or undefined if no match was found).

update ( htmlOrData, [loadScripts], [callback], [scriptScope] )

Update the content area of a component.

Available since: 3.4.0

Parameters

htmlOrData :  String/Object

If this component has been configured with a template via the tpl config then it will use this argument as data to populate the template. If this component was not configured with a template, the components content area will be updated via Ext.Element update.

loadScripts :  Boolean (optional)

Only legitimate when using the html configuration. Causes embedded script tags to be executed. Inline source will be executed with this Component as the scope (this reference).

Defaults to: false

callback :  Function (optional)

Only legitimate when using the html configuration. Callback to execute when scripts have finished loading.

scriptScope :  Object (optional)

The scope (this reference) in which to execute inline script elements content. Scripts with a src attribute cannot be executed with this scope.

Defaults to: `this`

updateBox ( box ) : Ext.Component
chainable ch

Sets the current box measurements of the component's underlying element.

Parameters

box :  Object

An object in the format {x, y, width, height}

Returns

:Ext.Component

this

updateFrame
private pri

Updates the frame elements to match new framing. The current frameBody is preserved by transplanting it into the new frame. All other frame childEls are destroyed and recreated if needed by the new frame. This method cannot transition from framed to non-framed or vise-versa or between table and div based framing.

updateLayout ( [options] )

Updates this component's layout. If this update affects this components ownerCt, that component's updateLayout method will be called to perform the layout instead. Otherwise, just this component (and its child items) will layout.

Parameters

options :  Object (optional)

An object with layout options.

defer :  Boolean

true if this layout should be deferred.

isRoot :  Boolean

true if this layout should be the root of the layout.

updateSession ( session )
private pri

Updates the session config.

Available since: 5.0.0

Parameters

session :  Ext.data.Session

updateViewModel ( viewModel )
private pri

Updates the viewModel config.

Available since: 5.0.0

Parameters

viewModel :  Ext.app.ViewModel

Static Methods

addConfig ( config, [mixinClass] )
static sta private pri

Adds new config properties to this class. This is called for classes when they are declared, then for any mixins that class may define and finally for any overrides defined that target the class.

Parameters

config :  Object

mixinClass :  Ext.Class (optional)

The mixin class if the configs are from a mixin.

addInheritableStatics ( members ) :
chainable ch static sta private pri

Parameters

members :  Object