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.
AbstractStore is a superclass of Ext.data.ProxyStore and Ext.data.ChainedStore. It's never used directly, but offers a set of methods used by both of those subclasses.
We've left it here in the docs for reference purposes, but unless you need to make a whole new type of Store, what you're probably looking for is Ext.data.Store.
When a Store is used by only one DataView, 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.
Defaults to:
undefined
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 method-sort). Stores support a single level of grouping, and groups can be fetched via the getGroups method.
Defaults to:
undefined
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 DataView's itemclick
event passing the node clicked on. To access DOM events directly from a child element
of a Component, we need to specify the element option to identify the Component
property to add a DOM listener to:
new Ext.panel.Panel({
width: 400,
height: 200,
dockedItems: [{
xtype: 'toolbar'
}],
listeners: {
click: {
element: 'el', //bind to the underlying el property on the panel
fn: function(){ console.log('click el'); }
},
dblclick: {
element: 'body', //bind to the underlying body property on the panel
fn: function(){ console.log('dblclick body'); }
}
}
});
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 PagingToolbar Defaults to 25.
To disable paging, set the pageSize to 0.
Defaults to:
25
true to defer any filtering operation to the server. If false,
filtering is done locally on the client.
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
Configure as true to have the filters saved when a client
grid 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
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
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 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
Adds declarative listeners as nested arrays of listener objects.
listeners : Array
true if any listeners were added
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 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();
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
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.
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.
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.
Perform the Store destroying sequence. Override this method to add destruction behaviors to your custom Stores.
Continue to fire event.
eventName : String
args : Array
bubbles : Boolean
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.
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.
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#method-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 = new 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. This method Will auto-generate an id if one has not already
been configured.
id
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.
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
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.
Returns true if the Store has been loaded.
true if the Store has been loaded.
Returns true if the Store is currently performing a load operation.
true if the Store is currently loading.
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
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.
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.
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.
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"
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.
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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