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 6.2.1 - Classic Toolkit


top

Summary

This class provides a container DD instance that allows dragging of multiple child source nodes.

This class does not move the drag target nodes, but a proxy element which may contain any DOM structure you wish. The DOM element to show in the proxy is provided by either a provided implementation of getDragData, or by registered draggables registered with Ext.dd.Registry

If you wish to provide draggability for an arbitrary number of DOM nodes, each of which represent some application object (For example nodes in a Ext.view.View) then use of this class is the most efficient way to "activate" those nodes.

By default, this class requires that draggable child nodes are registered with Ext.dd.Registry. However a simpler way to allow a DragZone to manage any number of draggable elements is to configure the DragZone with an implementation of the getDragData method which interrogates the passed mouse event to see if it has taken place within an element, or class of elements. This is easily done by using the event's getTarget method to identify a node based on a CSS selector. For example, to make the nodes of a DataView draggable, use the following technique. Knowledge of the use of the DataView is required:

myDataView.on('render', function(v) {
    myDataView.dragZone = new Ext.dd.DragZone(v.getEl(), {

//      On receipt of a mousedown event, see if it is within a DataView node.
//      Return a drag data object if so.
        getDragData: function(e) {

//          Use the DataView's own itemSelector (a mandatory property) to
//          test if the mousedown is within one of the DataView's nodes.
            var sourceEl = e.getTarget(v.itemSelector, 10);

//          If the mousedown is within a DataView node, clone the node to produce
//          a ddel element for use by the drag proxy. Also add application data
//          to the returned data object.
            if (sourceEl) {
                d = sourceEl.cloneNode(true);
                d.id = Ext.id();
                return {
                    ddel: d,
                    sourceEl: sourceEl,
                    repairXY: Ext.fly(sourceEl).getXY(),
                    sourceStore: v.store,
                    draggedRecord: v.getRecord(sourceEl)
                }
            }
        },

//      Provide coordinates for the proxy to slide back to on failed drag.
//      This is the original XY coordinates of the draggable element captured
//      in the getDragData method.
        getRepairXY: function() {
            return this.dragData.repairXY;
        }
    });
});

See the Ext.dd.DropZone documentation for details about building a DropZone which cooperates with this DragZone.

No members found using the current filters

configs

Optional Configs

animRepair : Boolean

If true, animates the proxy element back to the position of the handle element used to trigger the drag.

Defaults to:

true

containerScroll : Object / Boolean

True to register this container with the Scrollmanager for auto scrolling during drag operations. A Ext.dd.ScrollManager configuration may also be passed.

ddGroup : String

A named drag drop group to which this object belongs. If a group is specified, then this object will only interact with other drag drop objects in the same group.

dropAllowed : String

The CSS class returned to the drag source when drop is allowed.

Defaults to:

Ext.baseCSSPrefix + 'dd-drop-ok'

dropNotAllowed : String

The CSS class returned to the drag source when drop is not allowed.

Defaults to:

Ext.baseCSSPrefix + 'dd-drop-nodrop'

repairHighlightColor : String

The color to use when visually highlighting the drag source in the afterRepair method after a failed drop (defaults to light blue). The color must be a 6 digit hex value, without a preceding '#'.

Defaults to:

'c3daf9'

scrollEl : String / HTMLElement / Ext.dom.Element

An element to register with the ScrollManager if containerScroll is set. Defaults to the drag element.

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

__ygDragDrop
private pri

Internal typeof flag

Defaults to:

true

_domRef
private pri

Cached reference to the linked element

Defaults to:

null

available : Boolean

The available property is false until the linked dom element is accessible.

Defaults to:

false

centerFrame : Boolean

By default the frame is positioned exactly where the drag element is, so we use the cursor offset provided by Ext.dd.DD. Another option that works only if you do not have constraints on the obj is to have the drag frame centered around the cursor. Set centerFrame to true for this effect.

Defaults to:

false

clearPropertiesOnDestroy : Boolean / "async"
protected pro

Setting this property to false will prevent nulling object references on a Class instance after destruction. Setting this to "async" will delay the clearing for approx 50ms.

Defaults to:

true

Available since: 6.2.0

clearPrototypeOnDestroy : Boolean
private pri

Setting this property to true will result in setting the object's prototype to null after the destruction sequence is fully completed. After that, most attempts at calling methods on the object instance will result in "method not defined" exception. This can be very helpful with tracking down otherwise hard to find bugs like runaway Ajax requests, timed functions not cleared on destruction, etc.

Note that this option can only work in browsers that support Object.setPrototypeOf method, and is only available in debugging mode.

Defaults to:

false

Available since: 6.2.0

config : Object

Configuration attributes passed into the constructor

constrainX : Boolean
private pri

Set to true when horizontal contraints are applied

Defaults to:

false

constrainY : Boolean
private pri

Set to true when vertical contraints are applied

Defaults to:

false

defaultPadding : Object

Provides default constraint padding to "constrainTo" elements.

Defaults to:

{
    left: 0,
    right: 0,
    top: 0,
    bottom: 0
}

destroyed : Boolean
protected pro

This property is set to true after the destroy method is called.

Defaults to:

false

dragData : Object

This property contains the data representing the dragged object. This data is set up by the implementation of the getDragData method. It must contain a ddel property, but can contain any other data according to the application's needs.

dragElId : String
private pri

The id of the element that will be dragged. By default this is same as the linked element, but could be changed to another element. Ex: Ext.dd.DDProxy

Defaults to:

null

groups : Object

The group defines a logical collection of DragDrop objects that are related. Instances only get events when interacting with other DragDrop object in the same group. This lets us define multiple groups using a single DragDrop subclass if we want.

An object in the format {'group1':true, 'group2':true}

Defaults to:

null

handleElId : String
private pri

The ID of the element that initiates the drag operation. By default this is the linked element, but could be changed to be a child of this element. This lets us do things like only starting the drag when the header element within the linked html element is clicked.

Defaults to:

null

hasOuterHandles : Boolean

By default, drags can only be initiated if the mousedown occurs in the region the linked element is. This is done in part to work around a bug in some browsers that mis-report the mousedown if the previous mouseup happened outside of the window. This property is set to true if outer handles are defined. Defaults to false.

Defaults to:

false

id : String

The id of the element associated with this object. This is what we refer to as the "linked element" because the size and position of this element is used to determine when the drag and drop objects have interacted.

Defaults to:

null

ignoreSelf : Boolean

Set to false to enable a DragDrop object to fire drag events while dragging over its own Element. Defaults to true - DragDrop objects do not by default fire drag events to themselves.

invalidHandleClasses : String[]

An Array of CSS class names for elements to be considered in valid as drag handles.

Defaults to:

null

invalidHandleIds : Object

An object who's property names identify the IDs of elements to be considered invalid as drag handles. A non-null property value identifies the ID as invalid. For example, to prevent dragging from being initiated on element ID "foo", use:

{
    foo: true
}

Defaults to:

null

invalidHandleTypes : Object

An object who's property names identify HTML tags to be considered invalid as drag handles. A non-null property value identifies the tag as invalid. Defaults to the following value which prevents drag operations from being initiated by <a> elements:

{
    A: "A"
}

Defaults to:

null

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

isTarget : Boolean

By default, all instances can be a drop target. This can be disabled by setting isTarget to false.

Defaults to:

true

locked : Boolean
private pri

Individual drag/drop instances can be locked. This will prevent onmousedown start drag.

Defaults to:

false

maintainOffset : Boolean

Maintain offsets when we resetconstraints. Set to true when you want the position of the element relative to its parent to stay the same when the page changes

Defaults to:

false

maxX : Number
private pri

The right constraint

Defaults to:

0

maxY : Number
private pri

The down constraint

Defaults to:

0

minX : Number
private pri

The left constraint

Defaults to:

0

minY : Number
private pri

The up constraint

Defaults to:

0

moveOnly : Boolean

When set to true, other DD objects in cooperating DDGroups do not receive notification events when this DD object is dragged over them.

Defaults to:

false

padding : Number[]

The padding configured for this drag and drop object for calculating the drop zone intersection with this object. An array containing the 4 padding values: [top, right, bottom, left]

Defaults to:

null

primaryButtonOnly : Boolean

By default the drag and drop instance will only respond to the primary button click (left button for a right-handed mouse). Set to true to allow drag and drop to start with any mouse click that is propogated by the browser

Defaults to:

true

resizeFrame : Boolean

By default we resize the drag frame to be the same size as the element we want to drag (this is to get the frame effect). We can turn it off if we want a different behavior.

Defaults to:

true

scroll : Boolean

When set to true, the utility automatically tries to scroll the browser window when a drag and drop element is dragged near the viewport boundary.

Defaults to:

true

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

startPageX : Number
private pri

The linked element's absolute X position at the time the drag was started

Defaults to:

0

startPageY : Number
private pri

The linked element's absolute X position at the time the drag was started

Defaults to:

0

xTicks : Number[]

Array of pixel locations the element will snap to if we specified a horizontal graduation/interval. This array is generated automatically when you define a tick interval.

Defaults to:

null

yTicks : Number[]

Array of pixel locations the element will snap to if we specified a vertical graduation/interval. This array is generated automatically when you define a tick interval.

Defaults to:

null

Static Properties

$onExtended
static sta private pri

Defaults to:

[]

methods

Instance Methods

_resizeProxy
private pri

The proxy is automatically resized to the dimensions of the linked element when a drag is initiated, unless resizeFrame is set to false

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

addInvalidHandleClass ( cssClass )

Lets you specify a css class of elements that will not initiate a drag

Parameters

cssClass :  String

the class of the elements you wish to ignore

addInvalidHandleId ( id )

Lets you to specify an element id for a child of a drag handle that should not initiate a drag

Parameters

id :  String

the element id of the element you wish to ignore

addInvalidHandleType ( tagName )

Allows you to specify a tag name that should not start a drag operation when clicked. This is designed to facilitate embedding links within a drag handle that do something other than start the drag.

Parameters

tagName :  String

the type of element to exclude

addToGroup ( sGroup )

Adds this instance to a group of related drag/drop objects. All instances belong to at least one group, and can belong to as many groups as needed.

Parameters

sGroup :  String

the name of the group

afterDragDrop ( target, e, id )

An empty function by default, but provided so that you can perform a custom action after a valid drag drop has occurred by providing an implementation.

Parameters

target :  Ext.dd.DragDrop

The drop target

e :  Event

The event object

id :  String

The id of the dropped element

afterDragEnter ( target, e, id )

An empty function by default, but provided so that you can perform a custom action when the dragged item enters the drop target by providing an implementation.

Parameters

target :  Ext.dd.DragDrop

The drop target

e :  Event

The event object

id :  String

The id of the dragged element

afterDragOut ( target, e, id )

An empty function by default, but provided so that you can perform a custom action after the dragged item is dragged out of the target without dropping.

Parameters

target :  Ext.dd.DragDrop

The drop target

e :  Event

The event object

id :  String

The id of the dragged element

afterDragOver ( target, e, id )

An empty function by default, but provided so that you can perform a custom action while the dragged item is over the drop target by providing an implementation.

Parameters

target :  Ext.dd.DragDrop

The drop target

e :  Event

The event object

id :  String

The id of the dragged element

afterInvalidDrop ( e, id )

An empty function by default, but provided so that you can perform a custom action after an invalid drop has occurred by providing an implementation.

Parameters

e :  Event

The event object

id :  String

The id of the dropped element

afterValidDrop ( target, e, id )

An empty function by default, but provided so that you can perform a custom action after a valid drop has occurred by providing an implementation.

Parameters

target :  Object

The target DD

e :  Event

The event object

id :  String

The id of the dropped element

alignElWithMouse ( el, iPageX, iPageY )

Sets the element to the location of the mousedown or click event, maintaining the cursor location relative to the location on the element that was clicked. Override this if you want to place the element in a location other than where the cursor is.

Parameters

el :  HTMLElement

the element to move

iPageX :  Number

the X coordinate of the mousedown or drag event

iPageY :  Number

the Y coordinate of the mousedown or drag event

applyConfig

Sets up config options specific to this class. Overrides Ext.dd.DragDrop, but all versions of this method through the inheritance chain are called

autoOffset ( x, y )
private pri

Parameters

x :  Object

y :  Object

autoScroll ( x, y, h, w )
private pri

Auto-scroll the window if the dragged object has been moved beyond the visible window boundary.

Parameters

x :  Number

the drag element's x position

y :  Number

the drag element's y position

h :  Number

the height of the drag element

w :  Number

the width of the drag element

b4Drag ( e )

Event that fires prior to the onDrag event. Overrides Ext.dd.DragDrop.

Parameters

e :  Object

b4DragDrop ( e )
private pri

Code that executes immediately before the onDragDrop event

Parameters

e :  Object

b4DragOut ( e )
private pri

Code that executes immediately before the onDragOut event

Parameters

e :  Object

b4DragOver ( e )
private pri

Code that executes immediately before the onDragOver event

Parameters

e :  Object

b4EndDrag ( e )
private pri

Parameters

e :  Object

b4MouseDown ( e )

Event that fires prior to the onMouseDown event. Overrides Ext.dd.DragDrop.

Parameters

e :  Object

b4StartDrag ( x, y )
private pri

Code that executes immediately before the startDrag event

Parameters

x :  Object

y :  Object

beforeDragDrop ( target, e, id ) : Boolean
template tpl

An empty function by default, but provided so that you can perform a custom action before the dragged item is dropped onto the target and optionally cancel the onDragDrop.

Parameters

target :  Ext.dd.DragDrop

The drop target

e :  Event

The event object

id :  String

The id of the dragged element

Returns

:Boolean

isValid True if the drag drop event is valid, else false to cancel

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

beforeDragEnter ( target, e, id ) : Boolean
template tpl

An empty function by default, but provided so that you can perform a custom action before the dragged item enters the drop target and optionally cancel the onDragEnter.

Parameters

target :  Ext.dd.DragDrop

The drop target

e :  Event

The event object

id :  String

The id of the dragged element

Returns

:Boolean

isValid True if the drag event is valid, else false to cancel

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

beforeDragOut ( target, e, id ) : Boolean
template tpl

An empty function by default, but provided so that you can perform a custom action before the dragged item is dragged out of the target without dropping, and optionally cancel the onDragOut.

Parameters

target :  Ext.dd.DragDrop

The drop target

e :  Event

The event object

id :  String

The id of the dragged element

Returns

:Boolean

isValid True if the drag event is valid, else false to cancel

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

beforeDragOver ( target, e, id ) : Boolean
template tpl

An empty function by default, but provided so that you can perform a custom action while the dragged item is over the drop target and optionally cancel the onDragOver.

Parameters

target :  Ext.dd.DragDrop

The drop target

e :  Event

The event object

id :  String

The id of the dragged element

Returns

:Boolean

isValid True if the drag event is valid, else false to cancel

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

beforeInvalidDrop ( target, e, id ) : Boolean
template tpl

An empty function by default, but provided so that you can perform a custom action after an invalid drop has occurred.

Parameters

target :  Ext.dd.DragDrop

The drop target

e :  Event

The event object

id :  String

The id of the dragged element

Returns

:Boolean

isValid True if the invalid drop should proceed, else false to cancel

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

cachePosition ( [iPageX], [iPageY] )

Saves the most recent position so that we can reset the constraints and tick marks on-demand. We need to know this so that we can calculate the number of pixels the element is offset from its original position.

Parameters

iPageX :  Number (optional)

the current x position (this just makes it so we don't have to look it up again)

iPageY :  Number (optional)

the current y position (this just makes it so we don't have to look it up again)

callOverridden ( args ) : Object
deprecated dep protected pro

Call the original method that was previously overridden with Ext.Base#override

Ext.define('My.Cat', {
    constructor: function() {
        alert("I'm a cat!");
    }
});

My.Cat.override({
    constructor: function() {
        alert("I'm going to be a cat!");

        this.callOverridden();

        alert("Meeeeoooowwww");
    }
});

var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
                          // alerts "I'm a cat!"
                          // alerts "Meeeeoooowwww"

Parameters

args :  Array/Arguments

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

Returns

:Object

Returns the result of calling the overridden method

Deprecated since version 4.1.0

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 method-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

clearConstraints

Clears any constraints applied to this instance. Also clears ticks since they can't exist independent of a constraint at this time.

clearTicks

Clears any tick interval defined for this instance

constrainTo ( constrainTo, [pad], [inContent] )

Initializes the drag drop object's constraints to restrict movement to a certain element.

Usage:

var dd = new Ext.dd.DDProxy("dragDiv1", "proxytest",
               { dragElId: "existingProxyDiv" });
dd.startDrag = function(){
    this.constrainTo("parent-id");
};

Or you can initalize it using the Ext.dom.Element object:

Ext.get("dragDiv1").initDDProxy("proxytest", {dragElId: "existingProxyDiv"}, {
    startDrag : function(){
        this.constrainTo("parent-id");
    }
});

Parameters

constrainTo :  String/HTMLElement/Ext.dom.Element

The element or element ID to constrain to.

pad :  Object/Number (optional)

Pad provides a way to specify "padding" of the constraints, and can be either a number for symmetrical padding (4 would be equal to {left:4, right:4, top:4, bottom:4}) or an object containing the sides to pad. For example: {right:10, bottom:10}

inContent :  Boolean (optional)

Constrain the draggable in the content box of the element (inside padding and borders)

constructor ( el, config )

Creates new DragZone.

Parameters

el :  String/HTMLElement/Ext.dom.Element

The container element or ID of it.

config :  Object

createFrame

Creates the proxy element if it does not yet exist

destroy

This method is called to cleanup an object and its resources. After calling this method, the object should not be used any further in any way, including access to its methods and properties.

To prevent potential memory leaks, all object references will be nulled at the end of destruction sequence, unless clearPropertiesOnDestroy is set to false.

endDrag ( e )
private pri

Parameters

e :  Object

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.

getDragData ( e ) : Object

Called when a mousedown occurs in this container. Looks in Ext.dd.Registry for a valid target to drag based on the mouse down. Override this method to provide your own lookup logic (e.g. finding a child by class name). Make sure your returned object has a "ddel" attribute (with an HTML Element) for other functions to work.

Parameters

e :  Event

The mouse down event

Returns

:Object

The dragData

getDragEl HTMLElement

Returns a reference to the actual element to drag. By default this is the same as the html element, but it can be assigned to another element. An example of this can be found in Ext.dd.DDProxy

Returns

:HTMLElement

the html element

getEl HTMLElement

Returns a reference to the linked element

Returns

:HTMLElement

the html element

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.

getProxy Ext.dd.StatusProxy

Returns the drag source's underlying Ext.dd.StatusProxy

Returns

:Ext.dd.StatusProxy

proxy The StatusProxy

getRepairXY ( e ) : Number[]
template tpl

Called before a repair of an invalid drop to get the XY to animate to. By default returns the XY of this.dragData.ddel

Parameters

e :  Event

The mouse up event

Returns

:Number[]

The xy location (e.g. [100, 200])

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

getTargetCoord ( iPageX, iPageY ) : Object
private pri

Finds the location the element should be placed if we want to move it to where the mouse location less the click offset would place us.

Parameters

iPageX :  Number

the X coordinate of the click

iPageY :  Number

the Y coordinate of the click

Returns

:Object

An object that contains the coordinates (Object.x and Object.y)

x :  Number

y :  Number

getTick ( val, tickArray ) : Number
private pri

Normally the drag element is moved pixel by pixel, but we can specify that it move a number of pixels at a time. This method resolves the location when we have it set up like this.

Parameters

val :  Number

where we want to place the object

tickArray :  Number[]

sorted array of valid points

Returns

:Number

the closest tick

handleMouseDown ( e )
private pri

Parameters

e :  Object

handleOnAvailable
private pri

Executed when the linked element is available

hasConfig ( name )
private pri

Parameters

name :  String

init ( id, sGroup, config )

Sets up the DragDrop object. Must be called in the constructor of any Ext.dd.DragDrop subclass

Parameters

id :  String

the id of the linked element

sGroup :  String

the group of related items

config :  Object

configuration attributes

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

initFrame

Initialization for the drag frame element. Must be called in the constructor of all subclasses

initTarget ( id, sGroup, config )

Initializes Targeting functionality only... the object does not get a mousedown handler.

Parameters

id :  String

the id of the linked element

sGroup :  String

the group of related items

config :  Object

configuration attributes

isLocked Boolean

Returns true if this instance is locked, or the drag drop mgr is locked (meaning that all drag/drop is disabled on the page.)

Returns

:Boolean

true if this obj or all drag/drop is locked, else false

isValidHandleChild ( node ) : Boolean

Checks the tag exclusion list to see if this click should be ignored

Parameters

node :  HTMLElement

the HTMLElement to evaluate

Returns

:Boolean

true if this is a valid tag type, false if not

lock

Locks this instance

onAvailable

Override the onAvailable method to do what is needed after the initial position was determined.

onBeforeDrag ( data, e ) : Boolean
template tpl

An empty function by default, but provided so that you can perform a custom action before the initial drag event begins and optionally cancel it.

Parameters

data :  Object

An object containing arbitrary data to be shared with drop targets

e :  Event

The event object

Returns

:Boolean

isValid True if the drag event is valid, else false to cancel

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

onDrag ( e )

Abstract method called during the onMouseMove event while dragging an object.

Parameters

e :  Event

the mousemove event

onDragDrop ( e, id )
private pri

Parameters

e :  Object

id :  Object

onDragEnter ( e, id )
private pri

Parameters

e :  Object

id :  Object

onDragOut ( e, id )
private pri

Parameters

e :  Object

id :  Object

onDragOver ( e, id )
private pri

Parameters

e :  Object

id :  Object

onEndDrag ( data, e )
private pri

Parameters

data :  Object

e :  Object

onInitDrag ( x, y ) : Boolean
template tpl

Called once drag threshold has been reached to initialize the proxy element. By default, it clones the this.dragData.ddel

Parameters

x :  Number

The x position of the click on the dragged object

y :  Number

The y position of the click on the dragged object

Returns

:Boolean

true to continue the drag, false to cancel

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

onInvalidDrop ( target, e, id )
private pri

Parameters

target :  Object

e :  Object

id :  Object

onMouseDown ( e )

Called when a drag/drop obj gets a mousedown

Parameters

e :  Event

the mousedown event

onMouseUp ( e )

Called when a drag/drop obj gets a mouseup

Parameters

e :  Event

the mouseup event

onStartDrag ( x, y )
template tpl

An empty function by default, but provided so that you can perform a custom action once the initial drag event has begun. The drag cannot be canceled from this function.

Parameters

x :  Number

The x position of the click on the dragged object

y :  Number

The y position of the click on the dragged object

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

onValidDrop ( target, e, id )
private pri

Parameters

target :  Object

e :  Object

id :  Object

removeFromGroup ( sGroup )

Removes this instance from the supplied interaction group

Parameters

sGroup :  String

The group to drop

removeInvalidHandleClass ( cssClass )

Unsets an invalid css class

Parameters

cssClass :  String

the class of the element(s) you wish to re-enable

removeInvalidHandleId ( id )

Unsets an invalid handle id

Parameters

id :  String

the id of the element to re-enable

removeInvalidHandleType ( tagName )

Unsets an excluded tag name set by addInvalidHandleType

Parameters

tagName :  String

the type of element to unexclude

resetConstraints ( maintainOffset )

Must be called if you manually reposition a dd element.

Parameters

maintainOffset :  Boolean

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

setDelta ( iDeltaX, iDeltaY )

Sets the pointer offset. You can call this directly to force the offset to be in a particular location (e.g., pass in 0,0 to set it to the center of the object)

Parameters

iDeltaX :  Number

the distance from the left

iDeltaY :  Number

the distance from the top

setDragElId ( id )

Allows you to specify that an element other than the linked element will be moved with the cursor during a drag

Parameters

id :  String

the id of the element that will be used to initiate the drag

setDragElPos ( iPageX, iPageY )

Sets the drag element to the location of the mousedown or click event, maintaining the cursor location relative to the location on the element that was clicked. Override this if you want to place the element in a location other than where the cursor is.

Parameters

iPageX :  Number

the X coordinate of the mousedown or drag event

iPageY :  Number

the Y coordinate of the mousedown or drag event

setHandleElId ( id )

Allows you to specify a child of the linked element that should be used to initiate the drag operation. An example of this would be if you have a content div with text and links. Clicking anywhere in the content area would normally start the drag operation. Use this method to specify that an element inside of the content div is the element that starts the drag operation.

Parameters

id :  String

the id of the element that will be used to initiate the drag.

setInitPosition ( diffX, diffY )

Stores the initial placement of the linked element.

Parameters

diffX :  Number

the X offset, default 0

diffY :  Number

the Y offset, default 0

setOuterHandleElId ( id )

Allows you to set an element outside of the linked element as a drag handle

Parameters

id :  String

the id of the element that will be used to initiate the drag

setPadding ( iTop, iRight, iBot, iLeft )

Configures the padding for the target zone in px. Effectively expands (or reduces) the virtual object size for targeting calculations. Supports css-style shorthand; if only one parameter is passed, all sides will have that padding, and if only two are passed, the top and bottom will have the first param, the left and right the second.

Parameters

iTop :  Number

Top pad

iRight :  Number

Right pad

iBot :  Number

Bot pad

iLeft :  Number

Left pad

setStartPosition ( pos )
private pri

Sets the start position of the element. This is set when the obj is initialized, the reset when a drag is started.

Parameters

pos :  Object

current position (from previous lookup)

setXConstraint ( iLeft, iRight, [iTickSize] )

By default, the element can be dragged any place on the screen. Use this method to limit the horizontal travel of the element. Pass in 0,0 for the parameters if you want to lock the drag to the y axis.

Parameters

iLeft :  Number

the number of pixels the element can move to the left

iRight :  Number

the number of pixels the element can move to the right

iTickSize :  Number (optional)

parameter for specifying that the element should move iTickSize pixels at a time.

setXTicks ( iStartX, iTickSize )
private pri

Creates the array of horizontal tick marks if an interval was specified in setXConstraint().

Parameters

iStartX :  Object

iTickSize :  Object

setYConstraint ( iUp, iDown, [iTickSize] )

By default, the element can be dragged any place on the screen. Set this to limit the vertical travel of the element. Pass in 0,0 for the parameters if you want to lock the drag to the x axis.

Parameters

iUp :  Number

the number of pixels the element can move up

iDown :  Number

the number of pixels the element can move down

iTickSize :  Number (optional)

parameter for specifying that the element should move iTickSize pixels at a time.

setYTicks ( iStartY, iTickSize )
private pri

Creates the array of vertical tick marks if an interval was specified in setYConstraint().

Parameters

iStartY :  Object

iTickSize :  Object

showFrame ( iPageX, iPageY )
private pri

Resizes the drag frame to the dimensions of the clicked object, positions it over the object, and finally displays it

Parameters

iPageX :  Number

X click position

iPageY :  Number

Y click position

startDrag ( x, y )
private pri

Parameters

x :  Object

y :  Object

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

toString String

toString method

Returns

:String

string representation of the dd obj

unlock

Unlocks this instace

unreg

Removes all drag and drop hooks for this element

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

Returns

:

addMember ( name, member ) :
chainable ch static sta private pri

Parameters

name :  Object

member :  Object

Returns

:

addMembers ( members, [isStatic], [privacy] ) :
chainable ch static sta

Add methods / properties to the prototype of this class.

Ext.define('My.awesome.Cat', {
    constructor: function() {
        ...
    }
});

 My.awesome.Cat.addMembers({
     meow: function() {
        alert('Meowww...');
     }
 });

 var kitty = new My.awesome.Cat();
 kitty.meow();

Parameters

members :  Object

The members to add to this class.

isStatic :  Boolean (optional)

Pass true if the members are static.

Defaults to: false

privacy :  Boolean (optional)

Pass true if the members are private. This only has meaning in debug mode and only for methods.

Defaults to: false

Returns

:

addStatics ( members ) : Ext.Base
chainable ch static sta

Add / override static properties of this class.

Ext.define('My.cool.Class', {
    ...
});

My.cool.Class.addStatics({
    someProperty: 'someValue',      // My.cool.Class.someProperty = 'someValue'
    method1: function() { ... },    // My.cool.Class.method1 = function() { ... };
    method2: function() { ... }     // My.cool.Class.method2 = function() { ... };
});

Parameters

members :  Object

Returns

:Ext.Base

this

borrow ( fromClass, members ) : Ext.Base
static sta private pri

Borrow another class' members to the prototype of this class.

Ext.define('Bank', {
    money: '$$$',
    printMoney: function() {
        alert('$$$$$$$');
    }
});

Ext.define('Thief', {
    ...
});

Thief.borrow(Bank, ['money', 'printMoney']);

var steve = new Thief();

alert(steve.money); // alerts '$$$'
steve.printMoney(); // alerts '$$$$$$$'

Parameters

fromClass :  Ext.Base

The class to borrow members from

members :  Array/String

The names of the members to borrow

Returns

:Ext.Base

this

callParent ( args )
static sta protected pro

Parameters

args :  Object

callSuper ( args )
static sta protected pro

Parameters

args :  Object

create Object
static sta

Create a new instance of this Class.

Ext.define('My.cool.Class', {
    ...
});

My.cool.Class.create({
    someConfig: true
});

All parameters are passed to the constructor of the class.

Returns

:Object

the created instance.

createAlias ( alias, origin )
static sta

Create aliases for existing prototype methods. Example:

Ext.define('My.cool.Class', {
    method1: function() { ... },
    method2: function() { ... }
});

var test = new My.cool.Class();

My.cool.Class.createAlias({
    method3: 'method1',
    method4: 'method2'
});

test.method3(); // test.method1()

My.cool.Class.createAlias('method5', 'method3');

test.method5(); // test.method3() -> test.method1()

Parameters

alias :  String/Object

The new method name, or an object to set multiple aliases. See flexSetter

origin :  String/Object

The original method name

extend ( parentClass )
static sta private pri

Parameters

parentClass :  Object

getConfigurator Ext.Configurator
static sta private pri

Returns the Ext.Configurator for this class.

Returns

:Ext.Configurator

getName String
static sta

Get the current class' name in string format.

Ext.define('My.cool.Class', {
    constructor: function() {
        alert(this.self.getName()); // alerts 'My.cool.Class'
    }
});

My.cool.Class.getName(); // 'My.cool.Class'

Returns

:String

className

mixin ( name, mixinClass ) :
chainable ch static sta private pri

Used internally by the mixins pre-processor

Parameters

name :  Object

mixinClass :  Object

Returns

:

onExtended ( fn, scope ) :
chainable ch static sta private pri

Parameters

fn :  Object

scope :  Object

Returns

:

override ( members ) : Ext.Base
chainable ch static sta

Override members of this class. Overridden methods can be invoked via Ext.Base#callParent.

Ext.define('My.Cat', {
    constructor: function() {
        alert("I'm a cat!");
    }
});

My.Cat.override({
    constructor: function() {
        alert("I'm going to be a cat!");

        this.callParent(arguments);

        alert("Meeeeoooowwww");
    }
});

var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
                          // alerts "I'm a cat!"
                          // alerts "Meeeeoooowwww"

Direct use of this method should be rare. Use Ext.define instead:

Ext.define('My.CatOverride', {
    override: 'My.Cat',
    constructor: function() {
        alert("I'm going to be a cat!");

        this.callParent(arguments);

        alert("Meeeeoooowwww");
    }
});

The above accomplishes the same result but can be managed by the Ext.Loader which can properly order the override and its target class and the build process can determine whether the override is needed based on the required state of the target class (My.Cat).

Parameters

members :  Object

The properties to add to this class. This should be specified as an object literal containing one or more properties.

Returns

:Ext.Base

this class

triggerExtended
static sta private pri

Ext JS 6.2.1 - Classic Toolkit