The documentation for the ExtReact product diverges somewhat from the
documentation of other Sencha products. The sections below describe
documentation for all products except where indicated as unique to
ExtReact.
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.
ExtReact component classes list the configurable name prominently at the top of the API class doc followed by the fully-qualified class name.
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.
Public classes and class members are available for use by any other class or application code and may be relied upon as a stable and persistent within major product versions. Public classes and members may safely be extended via a subclass.
Protected class members are stable public members intended to be used by the
owning class or its subclasses. Protected members may safely be extended via a subclass.
Private classes and class members are used internally by the framework and are not intended to be used by application developers. Private classes and members may change or be omitted from the framework at any time without notice and should not be relied upon in application logic.
ExtReact component classes display
configuration options as props
ExtReact component classes do not list
properties as a dedicated member type, but rather as
read only props
static label next to the
method name. *See Static below.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).
Let's look at each part of the member row:
lookupComponent in this example)( item ) in this example)Ext.Component in this case). This may be omitted for methods that do not
return anything other than undefined or may display as multiple possible values
separated by a forward slash / signifying that what is returned may depend on the
results of the method call (i.e. a method may return a Component if a get method calls is
successful or false if unsuccessful which would be displayed as
Ext.Component/Boolean).PROTECTED in
this example - see the Flags section below)Ext.container.Container in this example). The source
class will be displayed as a blue link if the member originates from the current class
and gray if it is inherited from an ancestor or mixed-in class.view source in the example)item : Object in the example).undefined a "Returns" section
will note the type of class or object returned and a description (Ext.Component in the
example)Available since 3.4.0 - not pictured in
the example) just after the member descriptionDefaults to: false)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.
All ExtReact props are bindable
unless decorated as immutable
Immutable ExtReact props may not be use as a configurable prop when instantiating a component
classInstance.method1().method2().etc();false is returned from
an event handler- 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
- Indicates a class member of type config
Or in the case of an ExtReact component class this
indicates a member of type prop
- 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
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.
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.
ExtReact component classes do not hoist the getter /
setter methods into the prop. All methods will be described in the
Methods section
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.
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.
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:
Ext.button.Button class has an alternate class name of Ext.Button). Alternate class
names are commonly maintained for backward compatibility.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.
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:
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.
Encapsulates a DOM element, adding simple DOM manipulation facilities, normalizing for browser differences.
Note: The events included in this Class are the ones we've found to be the most commonly used. Many events are not listed here due to the expedient rate of change across browsers. For a more comprehensive list, please visit the following resources:
// by id
var el = Ext.get("my-div");
// by DOM element reference
var el = Ext.get(myDivElement);
Ext.dom.Element instances can be used to select descendant nodes using CSS selectors. There are 3 methods that can be used for this purpose, each with a slightly different twist:
These methods can accept any valid CSS selector since they all use querySelectorAll under the hood. The primary difference between these three methods is their return type:
To get an array of HTMLElement instances matching the selector '.foo' use the query method:
element.query('.foo');
This can easily be transformed into an array of Ext.dom.Element instances by setting
the asDom parameter to false:
element.query('.foo', false);
If the desired result is only the first matching HTMLElement use the selectNode method:
element.selectNode('.foo');
Once again, the dom node can be wrapped in an Ext.dom.Element by setting the asDom
parameter to false:
element.selectNode('.foo', false);
The select method is used when the desired return type is a CompositeElementLite or a CompositeElement. These are collections of elements that can be operated on as a
group using any of the methods of Ext.dom.Element. The only difference between the two
is that CompositeElementLite is a collection of HTMLElement instances, while
CompositeElement is a collection of Ext.dom.Element instances. To retrieve a
CompositeElementLite that represents a collection of HTMLElements for selector '.foo':
element.select('.foo');
For a CompositeElement simply pass true as the
composite parameter:
element.select('.foo', true);
The query selection methods can be used even if you don't have a Ext.dom.Element to start with For example to select an array of all HTMLElements in the document that match the selector '.foo', simply wrap the document object in an Ext.dom.Element instance using Ext#fly:
Ext.fly(document).query('.foo');
When an element is manipulated, by default there is no animation.
var el = Ext.get("my-div");
// no animation
el.setWidth(100);
specified as boolean (true) for default animation effects.
// default animation
el.setWidth(100, true);
To configure the effects, an object literal with animation options to use as the Element animation configuration object can also be specified. Note that the supported Element animation configuration options are a subset of the Ext.fx.Anim animation options specific to Fx effects. The supported Element animation configuration options are:
Option Default Description
--------- -------- ---------------------------------------------
duration 350 The duration of the animation in milliseconds
easing easeOut The easing method
callback none A function to execute when the anim completes
scope this The scope (this) of the callback function
Usage:
// Element animation options object
var opt = {
duration: 1000,
easing: 'elasticIn',
callback: this.foo,
scope: this
};
// animation with some options set
el.setWidth(100, opt);
The Element animation object being used for the animation will be set on the options object as "anim", which allows you to stop or manipulate the animation. Here is an example:
// using the "anim" property to get the Anim object
if(opt.anim.isAnimated()){
opt.anim.stop();
}
Matches options property names within a listeners specification object - property names which are never used as event names.
Defaults to:
{
scope: 1,
delay: 1,
buffer: 1,
onFrame: 1,
single: 1,
args: 1,
destroyable: 1,
priority: 1,
order: 1
}
We don't want the base destructor to clear the prototype because our destroyObservable handler must be called the very last. It will take care of the prototype after completing Observable destruction sequence.
Defaults to:
true
true indicates an id was auto-generated rather than provided by configuration.
Defaults to:
false
Available since: 6.7.0
A reference to the Component that owns this element. This is null if there
is no direct owner.
Initial suspended call count. Incremented when suspendEvents is called, decremented when resumeEvents is called.
Defaults to:
0
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 MVC 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);
}
true in this class to identify an object as an instantiated Observable, or subclass
thereof.
Defaults to:
true
Visibility mode constant for use with Ext.dom.Element#setVisibilityMode.
Use CSS clip property to reduce element's dimensions to 0px by 0px, effectively
making it hidden while not being truly invisible. This is useful when an element
needs to be published to the Assistive Technologies such as screen readers.
Defaults to:
4
Visibility mode constant for use with Ext.dom.Element#setVisibilityMode. Use the CSS 'display' property to hide the element.
Defaults to:
2
Visibility mode constant for use with Ext.dom.Element#setVisibilityMode. Use CSS absolute positioning and top/left offsets to hide the element.
Defaults to:
3
Visibility mode constant for use with Ext.dom.Element#setVisibilityMode.
Use CSS opacity property to set an elements opacity to 0
Defaults to:
5
Visibility mode constant for use with Ext.dom.Element#setVisibilityMode. Use the CSS 'visibility' property to hide the element.
Note that in this mode, isVisible may return true for an element even though it actually has a parent element that is hidden. For this reason, and in most cases, using the OFFSETS mode is a better choice.
Defaults to:
1
Adds declarative listeners as nested arrays of listener objects.
listeners : Array
true if any listeners were added
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}
});
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 Ext.util.Observable#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 set of arguments to pass to the handler function before the actual
fired event arguments. For example, if args is set to ['foo', 42],
the event handler function will be called with an arguments list like this:
handler('foo', 42, <actual event 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 -100Defaults to:
'current'
order : String (optional)
A shortcut for the order event option. Provided for backward compatibility.
Please use the priority event option instead.
Defaults to: 'current'
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();
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.SomeSharedMenu, '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.
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.
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();
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:
t/r/b/l) followed by a percentage along that side. This describes a
point to align with a similar point in the target. So 't0-b0' would be
the same as 'tl-bl', 'l0-r50' would place the top left corner of this item
halfway down the right edge of the target item. This allows more flexibility
and also describes which two edges are considered adjacent when positioning a tip pointer.Following are all of the supported predefined anchor positions:
Value Description
----- -----------------------------
tl The top left corner
t The center of the top edge
tr The top right corner
l The center of the left edge
c The center
r The center of the right edge
bl The bottom left corner
b The center of the bottom edge
br The bottom right corner
You can put a '?' at the end of the alignment string to constrain the positioned element to the Ext.Viewport. 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.
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", "tl-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]);
// align the 25% point on the bottom edge of this el
// with the 75% point on the top edge of other-el.
el.alignTo("other-el", 'b25-t75');
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
this
Calculates x,y coordinates specified by the anchor position on the element, adding extraX and extraY values.
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)
[x, y] An array containing the element's x and y coordinates
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.
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 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.
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.
Clips this Component/Element to fit within the passed element's or component's view area
clippingEl : Ext.Component/Ext.dom.Element/Ext.util.Region
The Component or element or Region which should clip this element even if this element is outside the bounds of that region.
sides : Number
The sides to clip 1=top, 2=right, 4=bottom, 8=left.
This is to support components being clipped to their logical owner, such as a grid row editor when the row being edited scrolls out of sight. The editor should be clipped at the edge of the scrolling element.
This function converts a legacy alignment string such as 't-b' into a pair of edge, offset objects which describe the alignment points of the two regions.
So tl-br becomes {myEdge:'t', offset:0}, {otherEdge:'b', offset:100}
This not only allows more flexibility in the alignment possibilities, but it also resolves any ambiguity as to chich two edges are desired to be adjacent if an anchor pointer is required.
posSpec : Object
Creates an event handling function which re-fires the event from this object as the passed event name.
newName : String
The name under which to re-fire the passed parameters.
beginEnd : Array (optional)
The caller can specify on which indices to slice.
Continue to fire event.
eventName : String
args : Array
bubbles : Boolean
Selects a single child at any depth below this element based on the passed CSS selector (the selector should not contain an id).
selector : String
The CSS selector
returnDom : Boolean (optional)
true to return the DOM node instead of Ext.dom.Element
Defaults to: false
The child Ext.dom.Element (or DOM node if returnDom is true)
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');
}
}
});
eventNames : String/String[]
The event name to bubble, or an Array of event names.
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.
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'
Deprecated since version 5.5
Use fireEventedAction instead.
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.
eventName : String
The name of the event to fire.
args : Object...
Variable number of parameters are passed to handlers.
returns false if any of the handlers return false otherwise it returns true.
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.
eventName : String
The name of the event to fire.
args : Object[]
An array of parameters which are passed to handlers.
returns false if any of the handlers return false otherwise it returns true.
Fires the specified event with the passed parameters and executes a function (action). Evented Actions will automatically dispatch a 'before' event passing. This event will be given a special controller that allows for pausing/resuming of the event flow.
By pausing the controller the updater and events will not run until resumed. Pausing, however, will not stop the processing of any other before events.
eventName : String
The name of the event to fire.
args : Array
Arguments to pass to handlers and to the action function.
fn : Function/String
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.
fnArgs : Array/Boolean (optional)
Optional arguments for the action fn. If not
given, the normal args will be used to call fn. If false is passed, the
args are used but if the first argument is this instance it will be removed
from the args passed to the action function.
Try to focus the element either immediately or after a timeout
if defer argument is specified.
defer : Number (optional)
Milliseconds to defer the focus
this
Gets the x,y coordinates to align this element with another element. See alignTo for more info on the supported position values.
alignToEl : 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]
[x, y]
Gets the x,y coordinates of an element specified by the anchor position on the element.
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)
[x, y] An array containing the element's x and y coordinates
Gets the x,y coordinates specified by the anchor position on 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)
[x, y] An array containing the element's x and y coordinates
Returns the size of the element's borders and padding.
an object with the following numeric properties
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.
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.
An object in the format
Gets the bubbling parent for an Observable
The bubble parent. null is returned if no bubble target exists
Returns a region object that defines the client area of this element.
That is, the area within any scrollbars.
A Region containing "top, left, bottom, right" properties.
Returns the content region of this element for purposes of constraining or clipping floating children. That is the region within the borders and scrollbars, but not within the padding.
A Region containing "top, left, bottom, right" properties.
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.
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
If the element needs to be translated, an [X, Y]
vector by which this element must be translated. Otherwise, false.
Retrieves the id. This method Will auto-generate an id if one has not already
been configured.
id
Returns the x coordinate of this element reletive to its offsetParent.
The local x coordinate
Returns the x and y coordinates of this element relative to its offsetParent.
The local XY position of the element
Returns the y coordinate of this element reletive to its offsetParent.
The local y coordinate
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.
offsetsTo : Ext.util.Positionable/HTMLElement/String
The Positionable, HTMLElement, or element id to get get the offsets from.
The XY page offsets (e.g. [100, -200])
Returns a region object that defines the area of this element.
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.
A Region containing "top, left, bottom, right" properties.
Returns the width in pixels of the passed text, or the width of the text in this Element.
text : String
The text to measure. Defaults to the innerHTML of the element.
min : Number (optional)
The minumum value to return.
max : Number (optional)
The maximum value to return.
The text width in pixels.
Returns the width in pixels of the passed text, or the width of the text in this Element.
text : String
The text to measure. Defaults to the innerHTML of the element.
min : Number (optional)
The minumum value to return.
max : Number (optional)
The maximum value to return.
The text width in pixels.
Returns the value of the value attribute.
asNumber : Boolean
true to parse the value as a number.
Returns the content region of this element. That is the region within the borders and padding.
A Region containing "top, left, bottom, right" member data.
Gets the current X position of the DOM element based on page coordinates.
The X position of the element
Gets the current position of the DOM element based on page coordinates.
The XY position of the element
Gets the current Y position of the DOM element based on page coordinates.
The Y position of the element
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.
eventName : String
The name of the event to check for
true if the event is being listened for or bubbles, else false
Returns true if this element matches the passed simple selector
(e.g. 'div.some-class' or 'span:first-child').
selector : String/Function
The simple selector to test or a function which is passed
candidate nodes, and should return true for nodes which match.
true if this element matches the selector, else false.
Checks whether this element can be focused programmatically or by clicking. To check if an element is in the document tab flow, use isTabbable.
True if the element is focusable
Checks if all events, or a specific event, is suspended.
event : String (optional)
The name of the specific event to check
true if events are suspended
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.
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.
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 the element relative to its current position.
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
Shorthand for removeManagedListener. Removes listeners that were added by the mon method.
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.
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}
});
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 Ext.util.Observable#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 -100Defaults 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'
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();
Appends an after-event handler.
Same as addListener with order set
to 'after'.
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.
Appends a before-event handler. Returning false from the handler will stop the event.
Same as addListener with order set
to 'before'.
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.
Selects child nodes based on the passed CSS selector. Delegates to document.querySelectorAll. More information can be found at http://www.w3.org/TR/css3-selectors/
All selectors, attribute filters and pseudos below can be combined infinitely
in any order. For example div.foo:nth-child(odd)[@foo=bar].bar:first would be
a perfectly valid selector.
The use of @ and quotes are optional. For example, div[@foo='bar'] is also a valid attribute selector.
selector : String
The CSS selector.
asDom : Boolean (optional)
false to return an array of Ext.dom.Element
Defaults to: true
An Array of elements ( HTMLElement or Ext.dom.Element if asDom is false) that match the selector. If there are no matches, an empty Array is returned.
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).
origin : Object
The Observable whose events this object is to relay.
events : String[]/Object
Array of event names to relay or an Object with key/value pairs translating to ActualEventName/NewEventName respectively. For example: this.relayEvents(this, {add:'push', remove:'pop'});
Would now redispatch the add event of this as a push event and the remove event as a pop event.
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'.
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();
Removes an event handler.
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 Ext.util.Observable#addListener or the listener will not be removed.
Removes listeners that were added by the mon method.
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.
Remove a single managed listener item
isClear : Boolean
True if this is being called during a clear
managedListener : Object
The managed listener item
item : Object
ename : String
fn : Function
scope : Object
See removeManagedListener for other args
Gets the default scope for firing late bound events (string names with no scope attached) at runtime.
defaultScope : Object (optional)
The default scope to return if none is found.
Defaults to: this
The default event scope
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.
eventName : String...
Multiple event names to resume.
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.
discardQueue : Boolean (optional)
true to prevent any previously queued events from firing
while we were suspended. See suspendEvents.
Converts local coordinates into page-level coordinates
xy : Number[]
The local x and y coordinates
The translated coordinates
Selects descendant elements of this element based on the passed CSS selector to enable Ext.dom.Element methods to be applied to many related elements in one statement through the returned Ext.dom.CompositeElementLite object.
selector : String/HTMLElement[]
The CSS selector or an array of elements
composite : Boolean
Return a CompositeElement as opposed to a CompositeElementLite. Defaults to false.
Sets the passed attributes as attributes of this element (a style attribute
can be a string, object or function).
Example component (though any Ext.dom.Element would suffice):
var cmp = Ext.create({
xtype: 'component',
html: 'test',
renderTo: Ext.getBody()
});
Once the component is rendered, you can fetch a reference to its outer
element to use set:
cmp.el.set({
foo: 'bar'
});
This sets an attribute on the element of foo="bar":
<div class="x-component x-component-default x-border-box" id="component-1009" foo="bar">test</div>
To remove the attribute pass a value of undefined:
cmp.el.set({
foo: undefined
});
Note:
undefined when the
expandos param is set to false.style results in the request being handed off to
applyStyles.cls results in the element's dom's
className property
being set directly. For additional flexibility when setting / removing
classes see:
attributes : Object
The object with the attributes.
useSet : Boolean (optional)
false to override the default setAttribute
to use expandos.
Defaults to: true
this
Sets the element's box.
box : Object
The box to fill {x, y, width, height}
this
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.
listeners : Object
The listeners
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.
x : Number
The x coordinate. A value of null sets the left style to 'auto'.
this
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.
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'
this
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.
y : Number
The y coordinate. A value of null sets the top style to 'auto'.
this
Sets the X position of the DOM element based on page coordinates.
x : Number
The X position
this
Sets the position of the DOM element in page coordinates.
pos : Number[]
Contains X & Y [x, y] values for new position (coordinates are page-based)
this
Sets the Y position of the DOM element based on page coordinates.
y : Number
The Y position
this
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.
eventName : String...
Multiple event names to suspend.
Suspends the firing of all events. (see resumeEvents)
queueSuspended : Boolean
true to queue up suspended events to be fired
after the resumeEvents call instead of discarding all suspended events.
Translates the passed page coordinates into left/top css values for the element
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
An object with left and top properties. e.g. {left: (value), top: (value)}
Translates the passed page coordinates into x and y css values for the element
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
An object with x and y properties. e.g. {x: (value), y: (value)}
Shorthand for removeListener. Removes an event handler.
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 Ext.util.Observable#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'
});
Removes a before-event handler.
Same as removeListener with order set to 'after'.
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.
Removes a before-event handler.
Same as removeListener with order set to 'before'.
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.
Walks up the dom looking for a parent node that matches the passed simple selector (e.g. 'div.some-class' or 'span:first-child'). This is a shortcut for findParentNode() that always returns an Ext.dom.Element.
selector : String
The simple selector to test. See Ext.dom.Query for information about simple selectors.
limit : Number/String/HTMLElement/Ext.dom.Element (optional)
The max depth to search as a number or an element that causes the upward traversal to stop and is not considered for inclusion as the result. (defaults to 50 || document.documentElement)
returnDom : Boolean (optional)
True to return the DOM node instead of Ext.dom.Element
Defaults to: false
The matching DOM node (or HTMLElement if returnDom is true). Or null if no match was found.
Gets the globally shared flyweight Element, with the passed node as the active element. Do not store a reference to this element - the dom node can be overwritten by other code. Ext#fly is alias for Ext.dom.Element#fly.
Use this to make one-time references to DOM elements which are not going to be accessed again either by application code, or by Ext's classes. If accessing an element which will be processed regularly, then Ext.get will be more appropriate to take advantage of the caching provided by the Ext.dom.Element class.
If this method is called with and id or element that has already been cached by a previous call to Ext.get() it will return the cached Element instead of the flyweight instance.
dom : String/HTMLElement
The DOM node or id.
named : String (optional)
Allows for creation of named reusable flyweights to prevent conflicts (e.g. internally Ext uses "_global").
The shared Element object (or null if no matching
element was found).
Retrieves Ext.dom.Element objects. Ext#get is alias for Ext.dom.Element#get.
This method does not retrieve Ext.Components. This method retrieves Ext.dom.Element objects which encapsulate DOM elements. To retrieve a Component by its ID, use Ext.ComponentManager#get.
When passing an id, it should not include the # character that is used for a css selector.
// For an element with id 'foo'
Ext.get('foo'); // Correct
Ext.get('#foo'); // Incorrect
Uses simple caching to consistently return the same object. Automatically fixes if an object was recreated with the same id via AJAX or DOM.
el : String/HTMLElement/Ext.dom.Element
The id of the node, a DOM Node or an existing Element.
The Element object (or null if no matching element was found).
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).
members : Object
The properties to add to this class. This should be specified as an object literal containing one or more properties.
this class
Selects child nodes of a given root based on the passed CSS selector.
selector : String
The CSS selector.
asDom : Boolean (optional)
false to return an array of Ext.dom.Element
Defaults to: true
root : HTMLElement/String (optional)
The root element of the query or id of the root
An Array of elements that match the selector. If there are no matches, an empty Array is returned.
Selects elements based on the passed CSS selector to enable Ext.dom.Element methods to be applied to many related elements in one statement through the returned Ext.dom.CompositeElementLite object.
selector : String/HTMLElement[]
The CSS selector or an array of elements
composite : Boolean (optional)
Return a CompositeElement as opposed to a CompositeElementLite. Defaults to false.
Defaults to: false
root : HTMLElement/String (optional)
The root element of the query or id of the root
Fires when an object/image is stopped from loading before completely loaded.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when an element loses focus either via the pointing device or by tabbing navigation.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a control loses the input focus and its value has been modified since gaining focus.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a mouse click is detected within the element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a mouse double click is detected within the element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Where supported. Fires when an element is activated, for instance, through a mouse click or a keypress.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Where supported. Fires when an attribute has been modified.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Where supported. Fires when the character data has been modified.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Where supported. Similar to HTML focus event, but can be applied to any focusable element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Where supported. Similar to HTML blur event, but can be applied to any focusable element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Where supported. Fires when a node has been added as a child of another node.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Where supported. Fires when a node is being inserted into a document.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Where supported. Fires when a descendant node of the element is removed.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Where supported. Fires when a node is being removed from a document.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Where supported. Fires when the subtree is modified.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when there is a double tap.
event : Ext.event.Event
The Ext.event.Event event encapsulating the DOM event.
node : HTMLElement
The target of the event.
options : Object
The options object passed to Ext.mixin.Observable.addListener.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when an object/image/frame cannot be loaded properly.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when an element receives focus either via the pointing device or by tab navigation.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when focus is moved within an element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
target : Ext.dom.Element
The Ext.dom.Element element which recieved focus.
The Ext.dom.Element element which lost focus.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a keydown is detected within the element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a keypress is detected within the element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a keyup is detected within the element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when the user agent finishes loading all content within the element. Only supported by window, frames, objects and images.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when you touch and hold still for more than 1 second.
event : Ext.event.Event
The Ext.event.Event event encapsulating the DOM event.
node : HTMLElement
The target of the event.
options : Object
The options object passed to Ext.mixin.Observable.addListener.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a mousedown is detected within the element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when the mouse enters the element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when the mouse leaves the element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a mousemove is detected with the element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a mouseout is detected with the element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a mouseover is detected within the element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a mouseup is detected within the element.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires whenever this Element actually becomes visible (painted) on the screen. This is useful when you need to perform 'read' operations on the DOM element, i.e: calculating natural sizes and positioning.
Note: This event is not available to be used with event delegation. Instead painted only fires if you explicitly
add at least one listener to it, for performance reasons.
this : Ext.dom.Element
The component instance.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires continuously when there is pinching (the touch must move for this to be fired).
event : Ext.event.Event
The Ext.event.Event event encapsulating the DOM event.
node : HTMLElement
The target of the event.
options : Object
The options object passed to Ext.mixin.Observable.addListener.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a pinch has ended.
event : Ext.event.Event
The Ext.event.Event event encapsulating the DOM event.
node : HTMLElement
The target of the event.
options : Object
The options object passed to Ext.mixin.Observable.addListener.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fired once when a pinch has started.
event : Ext.event.Event
The Ext.event.Event event encapsulating the DOM event.
node : HTMLElement
The target of the event.
options : Object
The options object passed to Ext.mixin.Observable.addListener.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a form is reset.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Important note: For the best performance on mobile devices, use this only when you absolutely need to monitor a Element's size.
Note: This event is not available to be used with event delegation. Instead resize only fires if you explicitly
add at least one listener to it, for performance reasons.
this : Ext.dom.Element
The component instance.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires continuously when there is rotation (the touch must move for this to be fired).
When listening to this, ensure you know about the Ext.event.Event#angle and
Ext.event.Event#rotation properties in the event object.
event : Ext.event.Event
The Ext.event.Event event encapsulating the DOM event.
node : HTMLElement
The target of the event.
options : Object
The options object passed to Ext.mixin.Observable.addListener.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a rotation event has ended.
event : Ext.event.Event
The Ext.event.Event event encapsulating the DOM event.
node : HTMLElement
The target of the event.
options : Object
The options object passed to Ext.mixin.Observable.addListener.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fired once when a rotation has started.
event : Ext.event.Event
The Ext.event.Event event encapsulating the DOM event.
node : HTMLElement
The target of the event.
options : Object
The options object passed to Ext.mixin.Observable.addListener.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a document view is scrolled.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a user selects some text in a text field, including input and textarea.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when there is a single tap.
event : Ext.event.Event
The Ext.event.Event event encapsulating the DOM event.
node : HTMLElement
The target of the event.
options : Object
The options object passed to Ext.mixin.Observable.addListener.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a form is submitted.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when there is a swipe
When listening to this, ensure you know about the Ext.event.Event#direction property in the event object.
event : Ext.event.Event
The Ext.event.Event event encapsulating the DOM event.
node : HTMLElement
The target of the event.
options : Object
The options object passed to Ext.mixin.Observable.addListener.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when you touch and hold still for more than 1 second.
event : Ext.event.Event
The Ext.event.Event event encapsulating the DOM event.
node : HTMLElement
The target of the event.
options : Object
The options object passed to Ext.mixin.Observable.addListener.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when the user agent removes all content from a window or frame. For elements, it fires when the target element or any of its content has been removed.
e : Ext.event.Event
The Ext.event.Event encapsulating the DOM event.
t : HTMLElement
The target of the event.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
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