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.
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.
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.
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
- 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.
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 and inheritance. 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.
A chained store is a store that is a "view" of an existing store. The data comes from the source, however this view of the store may be sorted & filtered independently without having any impact on the source store.
When a Store is used by only one Ext.view.View, and should only exist for the lifetime of that view, then
configure the autoDestroy flag as true. This causes the destruction of the view to trigger the destruction of its Store.
true to maintain sorted order when records
are added regardless of requested insertion point, or when an item mutation
results in a new sort position.
This does not affect a ChainedStore's reaction to mutations of the source Store. If sorters are present when the source Store is mutated, this ChainedStore's sort order will always be maintained.
Defaults to: true
Defaults to: null
Array of Ext.util.Filter for this store. Can also be passed array of functions which will be used as the filterFn config for filters:
filters: [
function(item) {
return item.weight > 0;
}
]
Individual filters can be specified as an Ext.util.Filter instance, a config object for Ext.util.Filter or simply a function that will be wrapped in a instance with its {@Ext.util.Filter#filterFn filterFn} set.
For fine grain control of the filters collection, call getFilters to return the Ext.util.Collection instance that holds this store's filters.
var filters = store.getFilters(); // an Ext.util.FilterCollection
function legalAge (item) {
return item.age >= 21;
}
filters.add(legalAge);
//...
filters.remove(legalAge);
Any changes to the filters collection will cause this store to adjust its items accordingly.
Defaults to: null
Gets the filters for this store.
The filters
The direction in which sorting should be applied when grouping. Supported values are "ASC" and "DESC".
Defaults to: 'ASC'
The grouper by which to group the data store. May also be specified by the groupField config, however they should not be used together.
Defaults to: null
The field by which to group data in the store. Internally, grouping is very similar to sorting - the groupField and groupDir are injected as the first sorter (see sort). Stores support a single level of grouping, and groups can be fetched via the getGroups method.
A config object containing one or more event handlers to be added to this object during initialization. This should be a valid listeners config object as specified in the addListener example for attaching multiple handlers at once.
DOM events from Ext JS Ext.Component
While some Ext JS Component classes export selected DOM events (e.g. "click", "mouseover" etc), this is usually
only done when extra value can be added. For example the Ext.view.Views itemclick event passing the node clicked on. To access DOM events directly from a
child element of a Component, we need to specify the element option to identify the Component property to add a
DOM listener to:
new Ext.panel.Panel({
width: 400,
height: 200,
dockedItems: [{
xtype: 'toolbar'
}],
listeners: {
click: {
element: 'el', //bind to the underlying el property on the panel
fn: function(){ console.log('click el'); }
},
dblclick: {
element: 'body', //bind to the underlying body property on the panel
fn: function(){ console.log('dblclick body'); }
}
}
});
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
The number of records considered to form a 'page'. This is used to power the built-in paging using the nextPage and previousPage functions when the grid is paged using a Ext.toolbar.Paging Defaults to 25.
To disable paging, set the pageSize to 0.
Defaults to: 25
Defaults to: false
true if the sorting should be performed on the server side, false if it is local only.
Defaults to: false
The initial set of Ext.util.Sorter
Individual sorters can be specified as an Ext.util.Sorter instance, a config object for Ext.util.Sorter or simply the name of a property by which to sort.
An alternative way to extend the sorters is to call the sort method and pass
a property or sorter config to add to the sorters.
For fine grain control of the sorters collection, call getSorters to return the Ext.util.Collection instance that holds this collection's sorters.
var sorters = store.getSorters(); // an Ext.util.SorterCollection
sorters.add('name');
//...
sorters.remove('name');
Any changes to the sorters collection will cause this store to adjust its items accordingly.
Defaults to: null
Gets the sorters for this store.
The sorters
The backing data source for this chained store. Either a store instance or the id of an existing store.
Defaults to: null
Configure as true to have the filters saved when a client Ext.grid.Panel saves its state.
Defaults to: false
Sets the value of statefulFilters
statefulFilters : Boolean
Unique identifier for this store. If present, this Store will be registered with the Ext.data.StoreManager, making it easy to reuse elsewhere.
Note that when a store is instantiated by a Controller, the storeId will default to the name of the store if not specified in the class.
Defaults to: null
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
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
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
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
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
This property is set to true after the destroy method is called.
Defaults to: false
Perform the Store destroying sequence. Override this method to add destruction behaviors to your custom Stores.
Defaults to: Ext.emptyFn
Initial suspended call count. Incremented when suspendEvents is called, decremented when resumeEvents is called.
Defaults to: 0
If this property is specified by the target class of this mixin its properties are used to configure the created Ext.Factory.
This object holds a key for any event that has a listener. The listener may be set directly on the instance, or on its class or a super class (via observe) or on the Ext.app.EventBus. The values of this object are truthy (a non-zero number) and falsy (0 or undefined). They do not represent an exact count of listeners. The value for an event is truthy if the event must be fired and is falsy if there is no need to fire the event.
The intended use of this property is to avoid the expense of fireEvent calls when there are no listeners. This can be particularly helpful when one would otherwise have to call fireEvent hundreds or thousands of times. It is used like this:
if (this.hasListeners.foo) {
this.fireEvent('foo', this, arg1);
}
This property is set to true during the call to initConfig.
Defaults to: false
Available since: 5.0.0
This property is set to true if this instance is the first of its class.
Defaults to: false
Available since: 5.0.0
This value is true and is used to identify plain objects from instances of
a defined class.
Defaults to: true
true in this class to identify an object as an instantiated Observable, or subclass thereof.
Defaults to: true
true in this class to identify an object as an instantiated Store, or subclass thereof.
Defaults to: true
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
A counter that is increased by beginUpdate and decreased by endUpdate. When this transitions from 0 to 1 the beginupdate event is fired. When it transitions back from 1 to 0 the endupdate event is fired.
Defaults to: 0
Available since: 5.0.0
Adds declarative listeners as nested arrays of listener objects.
listeners : Array
true if any listeners were added
Adds Model instance to the Store. This method accepts either:
The new Model instances will be added at the end of the existing collection.
Sample usage:
myStore.add({some: 'data'}, {some: 'other data'});
Note that if this Store is sorted, the new Model instances will be inserted at the correct point in the Store to maintain the sort order.
record : Ext.data.Model[] / Ext.data.Model... / Object[] / Object...
An array of records or configuration objects, or variable number of record or config arguments.
The record instances that were added.
This method applies a versioned, deprecation declaration to this class. This
is typically called by the deprecated config.
deprecations : Object
Adds a new Filter to this Store's filter set and by default, applies the updated filter set to the Store's unfiltered dataset.
filters : Object[] / Ext.util.Filter[]
The set of filters to add to the current filter set.
suppressEvent : Boolean (optional)
If true the filter is cleared silently.
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();
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();
method : Object
fn : Object
scope : Object
preventDefault : Object
extraArgs : Object
Runs the aggregate function for all the records in the store.
When store is filtered, only items within the filter are aggregated.
fn : Function
The function to execute. The function is called with a single parameter, an array of records for that group.
scope : Object (optional)
The scope to execute the function in. Defaults to the store.
grouped : Boolean (optional)
True to perform the operation for each group in the store. The value returned will be an object literal with the key being the group name and the group average being the value. The grouped parameter is only honored if the store has a groupField.
field : String
The field to get the value from
An object literal with the group names and their appropriate values.
Gets the average value in the store.
When store is filtered, only items within the filter are aggregated.
field : String
The field in each record
grouped : Boolean (optional)
True to perform the operation for each group in the store. The value returned will be an object literal with the key being the group name and the group average being the value. The grouped parameter is only honored if the store has a groupField.
The average value, if no items exist, 0.
method : Object
fn : Object
scope : Object
preventDefault : Object
extraArgs : Object
This method may be called to indicate the start of multiple changes to the store.
Automatic synchronization as configured by the autoSync flag is deferred until the endUpdate method is called, so multiple mutations can be coalesced into one synchronization operation.
Internally this method increments a counter that is decremented by endUpdate. It is important, therefore, that if you call beginUpdate directly you match that call with a call to endUpdate or you will prevent the collection from updating properly.
For example:
var store = Ext.StoreManager.lookup({
//...
autoSync: true
});
store.beginUpdate();
record.set('fieldName', 'newValue');
store.add(item);
// ...
store.insert(index, otherItem);
//...
// Interested parties will listen for the endupdate event
store.endUpdate();
Available since: 5.0.0
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"
args : Array / Arguments
The arguments, either an array or the arguments object
from the current method, for example: this.callOverridden(arguments)
Returns the result of calling the overridden method
Deprecated since version 4.1.0
Use #callParent instead.
Call the "parent" method of the current method. That is the method previously overridden by derivation or by an override (see Ext#define).
Ext.define('My.Base', {
constructor: function (x) {
this.x = x;
},
statics: {
method: function (x) {
return x;
}
}
});
Ext.define('My.Derived', {
extend: 'My.Base',
constructor: function () {
this.callParent([21]);
}
});
var obj = new My.Derived();
alert(obj.x); // alerts 21
This can be used with an override as follows:
Ext.define('My.DerivedOverride', {
override: 'My.Derived',
constructor: function (x) {
this.callParent([x*2]); // calls original My.Derived constructor
}
});
var obj = new My.Derived();
alert(obj.x); // now alerts 42
This also works with static and private methods.
Ext.define('My.Derived2', {
extend: 'My.Base',
// privates: {
statics: {
method: function (x) {
return this.callParent([x*2]); // calls My.Base.method
}
}
});
alert(My.Base.method(10)); // alerts 10
alert(My.Derived2.method(10)); // alerts 20
Lastly, it also works with overridden static methods.
Ext.define('My.Derived2Override', {
override: 'My.Derived2',
// privates: {
statics: {
method: function (x) {
return this.callParent([x*2]); // calls My.Derived2.method
}
}
});
alert(My.Derived2.method(10); // now alerts 40
To override a method and replace it and also call the superclass method, use callSuper. This is often done to patch a method to fix a bug.
args : Array / Arguments
The arguments, either an array or the arguments object
from the current method, for example: this.callParent(arguments)
Returns the result of calling the parent method
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 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".
args : Array / Arguments
The arguments, either an array or the arguments object
from the current method, for example: this.callSuper(arguments)
Returns the result of calling the superclass method
Reverts to a view of the Record cache with no filtering applied.
suppressEvent : Boolean (optional)
If true the filter is cleared silently.
For a locally filtered Store, this means that the filter collection is cleared without firing the datachanged event.
For a remotely filtered Store, this means that the filter collection is cleared, but the store is not reloaded from the server.
Removes all listeners for this object including the managed listeners
Removes all managed listeners for this object.
Collects unique values for a particular dataIndex from this store.
Note that the filtered option can also be passed as a separate parameter for
compatibility with previous versions.
var store = Ext.create('Ext.data.Store', {
fields: ['name'],
data: [{
name: 'Larry'
}, {
name: 'Darryl'
}, {
name: 'Darryl'
}]
});
store.collect('name');
// returns ["Larry", "Darryl"]
property : String
The property to collect
includeOptions : Object (optional)
An object which contains options which modify how
the store is traversed. For compatibility, this argument may be the allowNull
value itself. If so, the next argument is the filtered value.
allowNull : Boolean (optional)
Pass true to allow null, undefined or empty string values.
filtered : Boolean (optional)
Pass true to collect from all records,
even ones which are filtered.
filtered : Boolean (optional)
This argument only applies when the legacy call form
is used and includeOptions is actually the allowNull value.
An array of the unique values
Checks if a record is in the current active data set.
record : Ext.data.Model
The record
true if the record is in the current active data set.
Gets the count of items in the store.
When store is filtered, only items within the filter are counted.
grouped : Boolean (optional)
True to perform the operation for each group in the store. The value returned will be an object literal with the key being the group name and the count for each group being the value. The grouped parameter is only honored if the store has a groupField.
the count
Converts a literal to a model, if it's not a model already
record : Ext.data.Model / Object
The record to create
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
Calls the specified function for each Ext.data.Model in the store.
When store is filtered, only loops over the filtered records.
fn : Function
The function to call. The Ext.data.Model is passed as the first parameter.
Returning false aborts and exits the iteration.
scope : Object (optional)
The scope (this reference) in which the function is executed.
Defaults to the current Ext.data.Model in the iteration.
includeOptions : Object / Boolean (optional)
An object which contains options which
modify how the store is traversed. Or simply the filtered option.
filtered : Boolean (optional)
Pass true to include filtered out
nodes in the iteration.
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.
This method is called after modifications are complete on a store. For details see beginUpdate.
Available since: 5.0.0
Filters the data in the Store by one or more fields. Example usage:
//filter with a single field
myStore.filter('firstName', 'Don');
//filtering with multiple filters
myStore.filter([
{
property : 'firstName',
value : 'Don'
},
{
property : 'lastName',
value : 'Griffin'
}
]);
Internally, Store converts the passed arguments into an array of Ext.util.Filter instances, and delegates the actual filtering to its internal Ext.util.Collection or the remote server.
filters : String / Ext.util.Filter[] (optional)
Either a string name of one of the fields in this Store's configured Ext.data.Model, or an array of filter configurations.
value : String (optional)
The property value by which to filter. Only applicable if filters is a string.
Filters by a function. The specified function will be called for each
Record in this Store. If the function returns true the Record is included,
otherwise it is filtered out.
When store is filtered, most of the methods for accessing store data will be working only within the set of filtered records. The notable exception is getById.
fn : Function
The function to be called. It will be passed the following parameters:
record : Ext.data.Model
The record to test for filtering. Access field values using Ext.data.Model#get.
scope : Object (optional)
The scope (this reference) in which the function is executed. Defaults to this Store.
Finds the index of the first matching Record in this store by a specific field value.
When store is filtered, finds records only within filter.
**IMPORTANT
If this store is Ext.data.BufferedStore, this can ONLY find records which happen to be cached in the page cache. This will be parts of the dataset around the currently visible zone, or recently visited zones if the pages have not yet been purged from the cache.**
property : String
The name of the Record field to test.
value : String / RegExp
Either a string that the field value should begin with, or a RegExp to test against the field.
startIndex : Number (optional)
The index to start searching at
Defaults to: 0
anyMatch : Boolean (optional)
True to match any part of the string, not just the beginning.
Defaults to: false
caseSensitive : Boolean (optional)
True for case sensitive comparison
Defaults to: false
exactMatch : Boolean (optional)
True to force exact match (^ and $ characters
added to the regex). Ignored if anyMatch is true.
Defaults to: false
The matched index or -1
Find the index of the first matching Record in this Store by a function.
If the function returns true it is considered a match.
When store is filtered, finds records only within filter.
**IMPORTANT
If this store is Ext.data.BufferedStore, this can ONLY find records which happen to be cached in the page cache. This will be parts of the dataset around the currently visible zone, or recently visited zones if the pages have not yet been purged from the cache.**
fn : Function
The function to be called. It will be passed the following parameters:
record : Ext.data.Model
The record to test for filtering. Access field values using Ext.data.Model#get.
id : Object
The ID of the Record passed.
scope : Object (optional)
The scope (this reference) in which the function is executed. Defaults to this Store.
start : Number (optional)
The index at which to start searching.
Defaults to: 0
The matched index or -1
Finds the index of the first matching Record in this store by a specific field value.
When store is filtered, finds records only within filter.
**IMPORTANT
If this store is Ext.data.BufferedStore, this can ONLY find records which happen to be cached in the page cache. This will be parts of the dataset around the currently visible zone, or recently visited zones if the pages have not yet been purged from the cache.**
fieldName : String
The name of the Record field to test.
value : Object
The value to match the field against.
startIndex : Number (optional)
The index to start searching at
Defaults to: 0
The matched index or -1
Finds the first matching Record in this store by a specific field value.
When store is filtered, finds records only within filter.
**IMPORTANT
If this store is Ext.data.BufferedStore, this can ONLY find records which happen to be cached in the page cache. This will be parts of the dataset around the currently visible zone, or recently visited zones if the pages have not yet been purged from the cache.**
fieldName : String
The name of the Record field to test.
value : String / RegExp
Either a string that the field value should begin with, or a RegExp to test against the field.
startIndex : Number (optional)
The index to start searching at
Defaults to: 0
anyMatch : Boolean (optional)
True to match any part of the string, not just the beginning.
Defaults to: false
caseSensitive : Boolean (optional)
True for case sensitive comparison
Defaults to: false
exactMatch : Boolean (optional)
True to force exact match (^ and $ characters
added to the regex). Ignored if anyMatch is true.
Defaults to: false
The matched record or null
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.
Convenience function for getting the first model instance in the store.
When store is filtered, will return first item within the filter.
grouped : Boolean (optional)
True to perform the operation for each group in the store. The value returned will be an object literal with the key being the group name and the first record being the value. The grouped parameter is only honored if the store has a groupField.
The first model instance in the store, or undefined
fn : Object
scope : Object
records : Object
field : Object
Get the Record at the specified index.
The index is effected by filtering.
index : Number
The index of the Record to find.
The Record at the passed index. Returns null if not found.
Gets the bubbling parent for an Observable
The bubble parent. null is returned if no bubble target exists
Get the Record with the specified id.
This method is not affected by filtering, lookup will be performed from all records inside the store, filtered or not.
id : Mixed
The id of the Record to find.
The Record with the passed id. Returns null if not found.
Get the Record with the specified internalId.
This method is not affected by filtering, lookup will be performed from all records inside the store, filtered or not.
internalId : Mixed
The id of the Record to find.
The Record with the passed internalId. Returns null if not found.
Returns a specified config property value. If the name parameter is not passed, all current configuration options will be returned as key value pairs.
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
The config property value.
Gets the number of records in store.
If using paging, this may not be the total size of the dataset. If the data object used by the Reader contains the dataset size, then the Ext.data.ProxyStore#getTotalCount function returns the dataset size. Note: see the Important note in Ext.data.ProxyStore#load.
When store is filtered, it's the number of records matching the filter.
The number of Records in the Store.
Returns a collection of readonly sub-collections of your store's records with grouping applied. These sub-collections are maintained internally by the collection.
See groupField, groupDir. Example for a store containing records with a color field:
var myStore = Ext.create('Ext.data.Store', {
groupField: 'color',
groupDir : 'DESC'
});
myStore.getGroups();
The above should result in the following format:
[
{
name: 'yellow',
children: [
// all records where the color field is 'yellow'
]
},
{
name: 'red',
children: [
// all records where the color field is 'red'
]
}
]
Group contents are affected by filtering.
The grouped data
Retrieves the id of this component. Will autogenerate an id if one has not already been set.
id
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'.
name : String (optional)
Name of the config option to return.
The full config object or a single config value
when name parameter specified.
Gathers a range of Records between specified indices.
This method is affected by filtering.
start : Number
The starting index. Defaults to zero.
end : Number
The ending index. Defaults to the last record. The end index is included.
An array of records.
Returns the grouping, sorting and filtered state of this Store.
Groups data inside the store.
grouper : String / Object
Either a string name of one of the fields in this Store's configured Ext.data.Model, or an object, or a Ext.util.Grouper configuration object.
direction : String (optional)
The overall direction to group the data by. Defaults to the value of groupDir.
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
Get the index of the record within the store.
When store is filtered, records outside of filter will not be found.
record : Ext.data.Model
The Ext.data.Model object to find.
The index of the passed Record. Returns -1 if not found.
Get the index within the store of the Record with the passed id.
Like #indexOf, this method is affected by filtering.
id : String
The id of the Record to find.
The index of the Record. Returns -1 if not found.
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'
instanceConfig : Object
this
Inserts Model instances into the Store at the given index and fires the add event. See also add.
index : Number
The start index at which to insert the passed Records.
records : Ext.data.Model / Ext.data.Model[] / Object / Object[]
An Ext.data.Model instance, the data needed to populate an instance or an array of either of these.
records The added records
Tests whether the store currently has any active filters.
true if the store is filtered.
Tests whether the store currently has an active grouper.
true if the store is grouped.
Tests whether the store currently has any active sorters.
true if the store is sorted.
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
Convenience function for getting the last model instance in the store.
When store is filtered, will return last item within the filter.
grouped : Boolean (optional)
True to perform the operation for each group in the store. The value returned will be an object literal with the key being the group name and the last record being the value. The grouped parameter is only honored if the store has a groupField.
The last model instance in the store, or undefined
Adds a "destroyable" object to an internal list of objects that will be destroyed when this instance is destroyed (via destroy).
name : String
value : Object
The value passed.
Gets the maximum value in the store.
When store is filtered, only items within the filter are aggregated.
field : String
The field in each record
grouped : Boolean (optional)
True to perform the operation for each group in the store. The value returned will be an object literal with the key being the group name and the maximum in the group being the value. The grouped parameter is only honored if the store has a groupField.
The maximum value, if no items exist, undefined.
Gets the minimum value in the store.
When store is filtered, only items within the filter are aggregated.
field : String
The field in each record
grouped : Boolean (optional)
True to perform the operation for each group in the store. The value returned will be an object literal with the key being the group name and the minimum in the group being the value. The grouped parameter is only honored if the store has a groupField.
The minimum value, if no items exist, undefined.
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();
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.
source : Object
records : Object
successful : Object
operation : Object
Query all the cached records in this Store by name/value pair. The parameters will be used to generated a filter function that is given to the queryBy method.
This method complements queryBy by generating the query function automatically.
This method is not affected by filtering, it will always search all records in the store regardless of filtering.
property : String
The property to create the filter function for
value : String / RegExp
The string/regex to compare the property value to
anyMatch : Boolean (optional)
True to match any part of the string, not just the beginning.
Defaults to: false
caseSensitive : Boolean (optional)
true to create a case-sensitive regex.
Defaults to: false
exactMatch : Boolean (optional)
True to force exact match (^ and $ characters
added to the regex). Ignored if anyMatch is true.
Defaults to: false
The matched records
Query all the cached records in this Store using a filtering function. The specified function
will be called with each record in this Store. If the function returns true the record is
included in the results.
This method is not affected by filtering, it will always search all records in the store regardless of filtering.
fn : Function
The function to be called. It will be passed the following parameters:
record : Ext.data.Model
The record to test for filtering. Access field values using Ext.data.Model#get.
id : Object
The ID of the Record passed.
scope : Object (optional)
The scope (this reference) in which the function is executed Defaults to this Store.
The matched records
Query all the cached records in this Store by field.
This method is not affected by filtering, it will always search all records in the store regardless of filtering.
field : String
The field from each record to use.
value : Object
The value to match.
The matched records.
Query all the cached records in this Store using a filtering function. The specified function
will be called with each record in this Store. If the function returns true the record is
included in the results.
This method is not affected by filtering, it will always search all records in the store regardless of filtering.
fn : Function
The function to be called. It will be passed the following parameters:
record : Ext.data.Model
The record to test for filtering.
scope : Object (optional)
The scope (this reference) in which the function is executed Defaults to this Store.
The matched records.
Determines if the passed range is available in the page cache.
start : Number
The start index
end : Number
The end index in the range
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 individual Filter from the current filter set using the passed Filter/Filter id and by default, applies the updated filter set to the Store's unfiltered dataset.
toRemove : String / Ext.util.Filter
The id of a Filter to remove from the filter set, or a Filter instance to remove.
suppressEvent : Boolean (optional)
If true the filter is cleared silently.
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 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 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.
Sets a single/multiple configuration options.
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.
this
Sorts the data in the Store by one or more of its properties. Example usage:
//sort by a single field
myStore.sort('myField', 'DESC');
//sorting by multiple fields
myStore.sort([
{
property : 'age',
direction: 'ASC'
},
{
property : 'name',
direction: 'DESC'
}
]);
Internally, Store converts the passed arguments into an array of Ext.util.Sorter instances, and either delegates the actual sorting to its internal Ext.util.Collection or the remote server.
When passing a single string argument to sort, Store maintains a ASC/DESC toggler per field, so this code:
store.sort('myField');
store.sort('myField');
Is equivalent to this code, because Store handles the toggling automatically:
store.sort('myField', 'ASC');
store.sort('myField', 'DESC');
field : String / Ext.util.Sorter[] (optional)
Either a string name of one of the fields in this Store's configured Ext.data.Model, or an array of sorter configurations.
direction : "ASC" / "DESC" (optional)
The overall direction to sort the data by.
Defaults to: "ASC"
mode : "append" / "prepend" / "replace" / "multi" (optional)
Defaults to: "replace"
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
Sums the value of field for each Ext.data.Model in store
and returns the result.
When store is filtered, only sums items within the filter.
field : String
A field in each record
grouped : Boolean (optional)
True to perform the operation for each group in the store. The value returned will be an object literal with the key being the group name and the sum for that group being the value. The grouped parameter is only honored if the store has a groupField.
The sum
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.
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.
Destroys a given set of linked objects. This is only needed if the linked object is being destroyed before this instance.
names : String[]
The names of the linked objects to destroy.
this
remoteFilter : Object
oldRemoteFilter : Object
remoteSort : Object
oldRemoteSort : Object
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.
config : Object
mixinClass : Ext.Class (optional)
The mixin class if the configs are from a mixin.
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();
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
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() { ... };
});
members : Object
this
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 '$$$$$$$'
fromClass : Ext.Base
The class to borrow members from
members : Array / String
The names of the members to borrow
this
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.
the created instance.
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()
alias : String / Object
The new method name, or an object to set multiple aliases. See flexSetter
origin : String / Object
The original method name
Returns the Ext.Configurator for this class.
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'
className
Used internally by the mixins pre-processor
name : Object
mixinClass : Object
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
Fired when a Model instance has been added to this Store.
Available since: 1.1.0
store : Ext.data.Store
The store.
records : Ext.data.Model[]
The records that were added.
index : Number
The index at which the records were inserted.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires before a store is sorted.
For remotely sorted stores, this will be just before the load operation triggered by changing the store's sorters.
For locally sorted stores, this will be just before the data items in the store's backing collection are sorted.
store : Ext.data.Store
The store being sorted
sorters : Ext.util.Sorter[]
Array of sorters applied to the store
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when the beginUpdate method is called. Automatic synchronization as configured by the autoSync flag is deferred until the endUpdate method is called, so multiple mutations can be coalesced into one synchronization operation.
Fired after the removeAll method is called.
Available since: 1.1.0
this : Ext.data.Store
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires whenever records are added to or removed from the Store.
To hook into modifications of records in this Store use the update event.
Available since: 1.1.0
this : Ext.data.Store
The data store
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when the endUpdate method is called. Automatic synchronization as configured by the autoSync flag is deferred until the endUpdate method is called, so multiple mutations can be coalesced into one synchronization operation.
Fires when the data cache has changed in a bulk manner (e.g., it has been sorted, filtered, etc.) and a widget that is using this Store as a Record cache should refresh its view.
this : Ext.data.Store
The data store
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fired when one or more records have been removed from this Store.
The signature for this event has changed in 5.0:
Available since: 5.0.0
store : Ext.data.Store
The Store object
records : Ext.data.Model[]
The records that were removed. In previous releases this was a single record, not an array.
index : Number
The index at which the records were removed.
isMove : Boolean
true if the child node is being removed so it can be
moved to another position in this Store.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires after a store is sorted.
For remotely sorted stores, this will be upon the success of a load operation triggered by changing the store's sorters.
For locally sorted stores, this will be just after the data items in the store's backing collection are sorted.
store : Ext.data.Store
The store being sorted
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires when a Model instance has been updated.
Available since: 1.1.0
this : Ext.data.Store
record : Ext.data.Model
The Model instance that was updated
operation : String
The update operation being performed. Value may be one of:
Ext.data.Model.EDIT
Ext.data.Model.REJECT
Ext.data.Model.COMMIT
modifiedFieldNames : String[]
Array of field names changed during edit.
details : Object
An object describing the change. See the itemchange event of the store's backing collection
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
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