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Terms, Icons, and Labels Access Levels Member Types Member Syntax Member Flags Class Icons Member Icons Navigation and Features Class Member Quick-Nav Menu Getter and Setter Methods History Bar Search and Filters API Doc Class Metadata Expanding and Collapsing Examples and Class Members Desktop -vs- Mobile View Viewing the Class Source

Terms, Icons, and Labels

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

Access Levels

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

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.

Member Types

Config - The configuration options for a class.
Property - Set once a class is instantiated. *See Read Only below.
Method - Actions that can be performed by a class. Methods should be read as instance methods and can only be called from a instance of a given class. Static methods that can be called directly from the class itself will have a static label next to the method name. *See Static below.
Event - Events are specific to the framework event system allowing for classes to programmatically raise an event to be handled by one or more event handler methods. DOM events, while handled by the framework event system, are not specifically described within the API documentation. *For DOM events refer to the event reference page from MDN.
Theme Variable - Variables used by the visual theme engine employed by the framework.
Theme Mixin - Functions used by the visual theme engine employed by the framework and may use values set in various Theme Variables.

Member Syntax

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

Ext.container.Container

view source

lookupComponent ( item ) : Ext.Component

protected

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

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

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

Parameters

item : Object

The config object being added.

Returns

Ext.Component

The component to be added.

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

Expand/Collapse - On the left-hand size of the member row is a control used to expand and collapse each member row to show / hide member details.
Member Name - The name of the class member (lookupComponent in this example)
Method Param - Any required or optional params used by a method (or passed to an event handler method) will be listed next to the method name within parenthesis (( item ) in this example)
Return type - The class instance or javascript object returned by the method or property (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).
Flags - Any flags applicable to the member will be displayed next (PROTECTED in this example - see the Flags section below)
Member Origin - On the right-hand side of the member row is the class where the member was initially described (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.
Member Source - On the right-hand side below the member origin class is a link to view the member's source (view source in the example)
Params List - Each param for a class method will be listed using the same name found above in parenthesis, the type of class or object expected, and a description of the param (item : Object in the example).
Returns - If a class returns a value other than undefined a "Returns" section will note the type of class or object returned and a description (Ext.Component in the example)
Since (not shown in the example) - Some members will show which version of the product the member was first introduced (i.e. Available since 3.4.0 - not pictured in the example) just after the member description
Default (not shown in the example) - Configs often show the default config value to be applied to a class instance if not overridden (i.e. Defaults to: false)

Member Flags

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

Required - Required config when instantiating a class
Bindable - The config has a setter which allows this config to be set via ViewModel binding
Read Only - The property may be read, but cannot be used to configure / re-configure a class instance at runtime
Singleton - Singleton classes are instantiated immediately once defined and may not be instantiated manually
Static - A static method or property is a method or property belonging to the class itself, not an instance of the class
Chainable - Refers to methods that return the class instance back when called.
This enables chained method calls like: classInstance.method1().method2().etc();
Deprecated - A class or member that is scheduled for removal in a future framework version and is provided in the current version for backwards compatibility.
Deprecated classes and members will have a message directing you to the preferred class / method going forward.
Removed - A removed class or member that exists in documentation only as a reference for users upgrading between framework versions
Template - A method defined within a base class designed to be overridden by subclasses
Abstract - A class or member may be be defined as abstract. Abstract classes and members establish a class structure and provide limited, if any, code. Class-specific code will be furnished via overrides in subclasses.
Preventable - Events marked preventable will not fire if false is returned from an event handler

Class Icons

- Indicates a framework class

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

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

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

Member Icons

- Indicates a class member of type config

- Indicates a class member of type property

- Indicates a class member of type method

- Indicates a class member of type event

- Indicates a class member of type theme variable

- Indicates a class member of type theme mixin

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

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

Getter and Setter Methods

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

History Bar

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

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

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

Search and Filters

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

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

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

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

API Doc Class Metadata

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

Alternate Name - One or more additional class name synonymns (in Ext JS 6.0.0 the Ext.button.Button class has an alternate class name of Ext.Button). Alternate class names are commonly maintained for backward compatibility.
Hierarchy - The hierararchy view lists the inheritance chain of the current class up through its ancestor classes up to the root base class.
Mixins - A list of classes that are mixed into the current class
Inherited Mixins - A list of classes that are mixed into an ancestor of the current class
Requires - All classes required to be defined for the class to be instantiated
Uses - A list of classes potentially used by the class at some point in its lifecycle, but not necessarily requried for the class to initially be instantiated
Subclasses - Classes that extend the current class

Expanding and Collapsing Examples and Class Members

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

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

Desktop -vs- Mobile View

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

Global navigation will be located in a menu on the left-hand side accessible via the hamburger menu icon. The menu houses the following (on most pages):
- The name of the current product (as a link to the product landing page)
- The Sencha icon used to navigate back to the documentation home page
- The product menu drop-down button
- Tabs of navigation trees for the API docs and guides
Current context navigation and tools is located on the right-hand side accessible via the gear icon. The context menu houses teh following:
- The global search input field
- (API doc) A "Filters" tab with the member filter, expand / collapse all examples button, expand / collapse all member rows button, the access level filter checkboxes, and the counts of each member
- (API doc) A "Related Classes" tab containing the menu of metadata related to the current class
- (Guides) The table of contents for the guide

Viewing the Class Source

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

Ext JS 6.6.0 - Modern Toolkit

Show private classes

top

Ext.mixin.Bindable private

Hierarchy

Ext.Base

Ext.mixin.Bindable

Mixed Into

Ext.Widget
Ext.chart.Caption
Ext.chart.series.Series

NOTE: This is a private utility class for internal use by the framework. Don't rely on its existence.

Summary

This class is intended as a mixin for classes that want to provide a "bind" config that connects to a ViewModel.

No members found using the current filters

configs

Optional Configs

Ext.mixin.Bindable

view source

bind : Object / String

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

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

To dynamically add bindings:

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

To remove bindings:

 panel.setBind({
     title: null
 });

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

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

Defaults to:

null

getBind : Object / String

Returns the value of bind

Returns

Object / String

setBind (bind)

Sets the value of bind

Parameters

bind : Object / String

Ext.mixin.Bindable

view source

controller : String / Object / Ext.app.ViewController

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

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

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

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

Defaults to:

null

Ext.mixin.Bindable

view source

getController Ext.app.ViewController

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

Returns

:Ext.app.ViewController

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

setController (controller)

Sets the value of controller

Parameters

controller : String / Object / Ext.app.ViewController

Ext.mixin.Bindable

view source

defaultListenerScope : Boolean

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

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

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

Defaults to:

false

getDefaultListenerScope : Boolean

Returns the value of defaultListenerScope

Returns

Boolean

setDefaultListenerScope (defaultListenerScope)

Sets the value of defaultListenerScope

Parameters

defaultListenerScope : Boolean

Ext.mixin.Bindable

view source

nameable : Boolean

Set to true for this component's name property to be tracked by its containing nameHolder.

Defaults to:

false

Ext.mixin.Bindable

view source

publishes : String / String[] / Object

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

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

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

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

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

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

Classes must provide this config as an Object:

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

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

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

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

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

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

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

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

Defaults to:

null

Available since: 5.0.0

getPublishes : String / String[] / Object

Returns the value of publishes

Returns

String / String[] / Object

setPublishes (publishes)

Sets the value of publishes

Parameters

publishes : String / String[] / Object

Ext.mixin.Bindable

view source

reference : String

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

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

Defaults to:

null

Ext.mixin.Bindable

view source

session : Boolean / Object / Ext.data.Session

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

To create a new session you can specify true:

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

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

Alternatively, a config object can be provided:

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

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

Defaults to:

null

getSession : Boolean / Object / Ext.data.Session

Returns the value of session

Returns

Boolean / Object / Ext.data.Session

setSession (session)

Sets the value of session

Parameters

session : Boolean / Object / Ext.data.Session

Ext.mixin.Bindable

view source

shareableName : Boolean

Set to true to allow this component's name to be shared by other items in the same nameHolder. Such items will be returned in an array from lookupName.

Defaults to:

false

Ext.mixin.Bindable

view source

twoWayBindable : String / String[] / Object

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

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

Defaults to:

null

getTwoWayBindable : String / String[] / Object

Returns the value of twoWayBindable

Returns

String / String[] / Object

setTwoWayBindable (twoWayBindable)

Sets the value of twoWayBindable

Parameters

twoWayBindable : String / String[] / Object

Ext.mixin.Bindable

view source

viewModel : String / Object / Ext.app.ViewModel

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

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

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

Defaults to:

null

getViewModel : String / Object / Ext.app.ViewModel

Returns the value of viewModel

Returns

String / Object / Ext.app.ViewModel

setViewModel (viewModel)

Sets the value of viewModel

Parameters

viewModel : String / Object / Ext.app.ViewModel

properties

Instance Properties

Ext.Base

view source

$className
private pri

Defaults to:

'Ext.Base'

Ext.Base

view source

$configPrefixed : Boolean
private pri

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

Defaults to:

true

Available since: 5.0.0

Ext.Base

view source

$configStrict : Boolean
private pri

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

Defaults to:

true

Available since: 5.0.0

Ext.Base

view source

clearPropertiesOnDestroy : Boolean / "async"
protected pro

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

Defaults to:

true

Available since: 6.2.0

Ext.Base

view source

clearPrototypeOnDestroy : Boolean
private pri

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

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

Defaults to:

false

Available since: 6.2.0

Ext.mixin.Bindable

view source

defaultBindProperty : String
protected pro

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

 bind: '{name}'

Is equivalent to this object form:

 bind: {
     value: '{name}'
 }

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

Defaults to:

null

Ext.Base

view source

destroyed : Boolean
protected pro

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

Defaults to:

false

Ext.Base

view source

isConfiguring : Boolean
readonly ro protected pro

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

Defaults to:

false

Available since: 5.0.0

Ext.Base

view source

isFirstInstance : Boolean
readonly ro protected pro

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

Defaults to:

false

Available since: 5.0.0

Ext.Base

view source

isInstance : Boolean
readonly ro protected pro

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

Defaults to:

true

Ext.Base

view source

self : Ext.Class
protected pro

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

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

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

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


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

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

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

Defaults to:

Base

Ext.mixin.Bindable

view source

validRefRe : RegExp
private pri

Regular expression used for validating reference values.

Defaults to:

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

Static Properties

Ext.Base

view source

$onExtended
static sta private pri

Defaults to:

[]

methods

Instance Methods

Ext.mixin.Bindable

view source

addBindableUpdater ( property )
private pri

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

Available since: 5.0.0

Parameters

property : String

The name of the config property.

Ext.Base

view source

addDeprecations ( deprecations )
private pri

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

Parameters

deprecations : Object

Ext.mixin.Bindable

view source

applyBind ( binds, currentBindings ) : Object
private pri

Available since: 5.0.0

Parameters

binds : String/Object

currentBindings : Object

Returns

:Object

Ext.mixin.Bindable

view source

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

Transforms a Session config to a proper instance.

Available since: 5.0.0

Parameters

session : Object

Returns

:Ext.data.Session

Ext.mixin.Bindable

view source

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

Transforms a ViewModel config to a proper instance.

Available since: 5.0.0

Parameters

viewModel : String/Object/Ext.app.ViewModel

Returns

:Ext.app.ViewModel

Ext.Base

view source

callOverridden ( args ) : Object
deprecated dep protected pro

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

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

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

        this.callOverridden();

        alert("Meeeeoooowwww");
    }
});

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

Parameters

args : Array/Arguments

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

Returns

:Object

Returns the result of calling the overridden method

Deprecated since version 4.1.0
Use method-callParent instead.

Ext.Base

view source

callParent ( args ) : Object
protected pro

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

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

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

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

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

 var obj = new My.Derived();

 alert(obj.x);  // alerts 21

This can be used with an override as follows:

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

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

 var obj = new My.Derived();

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

This also works with static and private methods.

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

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

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

Lastly, it also works with overridden static methods.

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

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

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

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

Parameters

args : Array/Arguments

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

Returns

:Object

Returns the result of calling the parent method

Ext.Base

view source

callSuper ( args ) : Object
protected pro

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

Consider:

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

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

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

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

         this.callParent();
     }
 });

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

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

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

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

         this.callSuper();
     }
 });

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

Parameters

args : Array/Arguments

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

Returns

:Object

Returns the result of calling the superclass method

Ext.Base

view source

destroy

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

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

Ext.Base

view source

destroyMembers ( args )

Destroys member properties by name.

If a property name is the name of a config, the getter is not invoked, so if the config has not been initialized, nothing will be done.

The property will be destroyed, and the corrected name (if the property is a config and config names are prefixed) will set to null in this object's dictionary.

Parameters

args : String...

One or more names of the properties to destroy and remove from the object.

Ext.mixin.Bindable

view source

getBind

see: bind

Ext.Base

view source

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

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

Parameters

name : String (optional)

The name of the config property to get.

peek : Boolean (optional)

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

Defaults to: false

ifInitialized : Boolean (optional)

true to only return the initialized property value, not the raw config value, and not to trigger initialization. Returns undefined if the property has not yet been initialized.

Defaults to: false

Returns

:Object

The config property value.

Ext.mixin.Bindable

view source

getController

see: controller

Ext.Base

view source

getCurrentConfig
private pri

Ext.mixin.Bindable

view source

getDefaultListenerScope

see: defaultListenerScope

Ext.Base

view source

getInitialConfig ( [name] ) : Object/Mixed

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

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

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

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

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

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

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

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

Parameters

name : String (optional)

Name of the config option to return.

Returns

:Object/Mixed

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

Ext.mixin.Bindable

view source

getPublishes

see: publishes

Ext.mixin.Bindable

view source

getSession

see: session

Ext.mixin.Bindable

view source

getTwoWayBindable

see: twoWayBindable

Ext.mixin.Bindable

view source

getViewModel

see: viewModel

Ext.Base

view source

hasConfig ( name )
private pri

Parameters

name : String

Ext.mixin.Bindable

view source

initBindable
private pri

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

Available since: 5.0.0

Ext.Base

view source

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

Initialize configuration for this class. a typical example:

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

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

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

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

Parameters

instanceConfig : Object

Returns

:Ext.Base

this

Ext.mixin.Bindable

view source

initInheritedState ( inheritedState )
protected pro

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

Parameters

inheritedState : Object

Ext.mixin.Bindable

view source

isBound ( [name] ) : Boolean

Determines if the passed property name is bound to ViewModel data.

Available since: 6.5.0

Parameters

name : String (optional)

The property name to test. Defaults to the defaultBindProperty

Returns

:Boolean

true if the passed property receives data from a ViewModel.

Ext.mixin.Bindable

view source

isSyncing ( name ) : Boolean
private pri

Checks if a particular binding is synchronizing the value.

Parameters

name : String

The name of the property being bound to.

Returns

:Boolean

true if the binding is syncing.

Ext.Base

view source

link ( name, value ) : Object
private pri

Adds a "destroyable" object to an internal list of objects that will be destroyed when this instance is destroyed (via destroy).

Parameters

name : String

value : Object

Returns

:Object

The value passed.

Ext.mixin.Bindable

view source

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

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

Available since: 5.0.1

Parameters

skipThis : Boolean (optional)

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

Defaults to: false

Returns

:Ext.app.ViewController

The controller. null if no controller is found.

Ext.mixin.Bindable

view source

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

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

Available since: 5.0.0

Parameters

skipThis : Boolean (optional)

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

Defaults to: false

Returns

:Ext.data.Session

Ext.mixin.Bindable

view source

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

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

Available since: 5.0.0

Parameters

skipThis : Boolean (optional)

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

Defaults to: false

Returns

:Ext.app.ViewModel

Ext.mixin.Bindable

view source

makeBindableUpdater ( cfg ) : Function
private pri

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

Available since: 5.0.0

Parameters

cfg : Ext.Config

Returns

:Function

The updater function.

Ext.mixin.Bindable

view source

publishState ( [property], [value] )
protected pro

Publish this components state to the ViewModel. If no arguments are given (or if this is the first call), the entire state is published. This state is determined by the publishes property.

This method is called only by component authors.

Available since: 5.0.0

Parameters

property : String (optional)

The name of the property to update.

value : Object (optional)

The value of property. Only needed if property is given.

Ext.mixin.Bindable

view source

setBind

see: bind

Ext.Base

view source

setConfig ( name, [value] ) : Ext.Base
chainable ch

Sets a single/multiple configuration options.

Parameters

name : String/Object

The name of the property to set, or a set of key value pairs to set.

value : Object (optional)

The value to set for the name parameter.

Returns

:Ext.Base

this

Ext.mixin.Bindable

view source

setController

see: controller

Ext.mixin.Bindable

view source

setDefaultListenerScope

see: defaultListenerScope

Ext.mixin.Bindable

view source

setPublishes

see: publishes

Ext.mixin.Bindable

view source

setSession

see: session

Ext.mixin.Bindable

view source

setTwoWayBindable

see: twoWayBindable

Ext.mixin.Bindable

view source

setViewModel

see: viewModel

Ext.Base

view source

statics Ext.Class
protected pro

Get the reference to the class from which this object was instantiated. Note that unlike Ext.Base#self, this.statics() is scope-independent and it always returns the class from which it was called, regardless of what this points to during run-time

Ext.define('My.Cat', {
    statics: {
        totalCreated: 0,
        speciesName: 'Cat' // My.Cat.speciesName = 'Cat'
    },

    constructor: function() {
        var statics = this.statics();

        alert(statics.speciesName);     // always equals to 'Cat' no matter what 'this' refers to
                                        // equivalent to: My.Cat.speciesName

        alert(this.self.speciesName);   // dependent on 'this'

        statics.totalCreated++;
    },

    clone: function() {
        var cloned = new this.self();   // dependent on 'this'

        cloned.groupName = this.statics().speciesName;   // equivalent to: My.Cat.speciesName

        return cloned;
    }
});


Ext.define('My.SnowLeopard', {
    extend: 'My.Cat',

    statics: {
        speciesName: 'Snow Leopard'     // My.SnowLeopard.speciesName = 'Snow Leopard'
    },

    constructor: function() {
        this.callParent();
    }
});

var cat = new My.Cat();                 // alerts 'Cat', then alerts 'Cat'

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

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

alert(My.Cat.totalCreated);             // alerts 3

Returns

:Ext.Class

Ext.Base

view source

unlink ( names ) : Ext.Base
chainable ch private pri

Destroys a given set of linked objects. This is only needed if the linked object is being destroyed before this instance.

Parameters

names : String[]

The names of the linked objects to destroy.

Returns

:Ext.Base

this

Ext.mixin.Bindable

view source

updateSession ( session )
private pri

Updates the session config.

Parameters

session : Ext.data.Session

Ext.mixin.Bindable

view source

updateViewModel ( viewModel, oldViewModel )
private pri

Updates the viewModel config.

Parameters

viewModel : Ext.app.ViewModel

oldViewModel : Ext.app.ViewModel

Static Methods

Ext.Base

view source

addConfig ( config, [mixinClass] )
static sta private pri

Adds new config properties to this class. This is called for classes when they are declared, then for any mixins that class may define and finally for any overrides defined that target the class.

Parameters

config : Object

mixinClass : Ext.Class (optional)

The mixin class if the configs are from a mixin.

Ext.Base

view source

addInheritableStatics ( members ) :
chainable ch static sta private pri

Parameters

members : Object

Returns

Ext.Base

view source

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

Parameters

name : Object

member : Object

Returns

Ext.Base

view source

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

Add methods / properties to the prototype of this class.

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

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

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

Parameters

members : Object

The members to add to this class.

isStatic : Boolean (optional)

Pass true if the members are static.

Defaults to: false

privacy : Boolean (optional)

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

Defaults to: false

Returns

Ext.Base

view source

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

Add / override static properties of this class.

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

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

Parameters

members : Object

Returns

:Ext.Base

this

Ext.Base

view source

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

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

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

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

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

var steve = new Thief();

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

Parameters

fromClass : Ext.Base

The class to borrow members from

members : Array/String

The names of the members to borrow

Returns

:Ext.Base

this

Ext.Base

view source

callParent ( args )
static sta protected pro

Parameters

args : Object

Ext.Base

view source

callSuper ( args )
static sta protected pro

Parameters

args : Object

Ext.Base

view source

create Object
static sta

Create a new instance of this Class.

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

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

All parameters are passed to the constructor of the class.

Returns

:Object

the created instance.

Ext.Base

view source

createAlias ( alias, origin )
static sta

Create aliases for existing prototype methods. Example:

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

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

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

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

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

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

Parameters

alias : String/Object

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

origin : String/Object

The original method name

Ext.Base

view source

extend ( parentClass )
static sta private pri

Parameters

parentClass : Object

Ext.Base

view source

getConfigurator Ext.Configurator
static sta private pri

Returns the Ext.Configurator for this class.

Returns

:Ext.Configurator

Ext.Base

view source

getName String
static sta

Get the current class' name in string format.

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

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

Returns

:String

className

Ext.Base

view source

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

Used internally by the mixins pre-processor

Parameters

name : Object

mixinClass : Object

Returns

Ext.Base

view source

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

Parameters

fn : Object

scope : Object

Returns

Ext.Base

view source

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

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

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

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

        this.callParent(arguments);

        alert("Meeeeoooowwww");
    }
});

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

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

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

        this.callParent(arguments);

        alert("Meeeeoooowwww");
    }
});

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

Parameters

members : Object

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

Returns

:Ext.Base

this class

Ext.Base

view source

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Viewing the Class Source

Ext.mixin.Bindable private

Hierarchy

Mixed Into

Summary

configs

bind : Object / String

getBind : Object / String

Returns

setBind (bind)

Parameters

controller : String / Object / Ext.app.ViewController

getController Ext.app.ViewController

Returns

setController (controller)

Parameters

defaultListenerScope : Boolean

getDefaultListenerScope : Boolean

Returns

setDefaultListenerScope (defaultListenerScope)

Parameters

nameable : Boolean

publishes : String / String[] / Object

getPublishes : String / String[] / Object

Returns

setPublishes (publishes)

Parameters

reference : String

session : Boolean / Object / Ext.data.Session

getSession : Boolean / Object / Ext.data.Session

Returns

setSession (session)

Parameters

shareableName : Boolean

twoWayBindable : String / String[] / Object

getTwoWayBindable : String / String[] / Object

Returns

setTwoWayBindable (twoWayBindable)

Parameters

viewModel : String / Object / Ext.app.ViewModel

getViewModel : String / Object / Ext.app.ViewModel

Returns

setViewModel (viewModel)

Parameters

properties

$className private pri

$configPrefixed : Boolean private pri

$configStrict : Boolean private pri

clearPropertiesOnDestroy : Boolean / "async" protected pro

clearPrototypeOnDestroy : Boolean private pri

defaultBindProperty : String protected pro

destroyed : Boolean protected pro

isConfiguring : Boolean readonly ro protected pro

isFirstInstance : Boolean readonly ro protected pro

isInstance : Boolean readonly ro protected pro

self : Ext.Class protected pro

validRefRe : RegExp private pri

$onExtended static sta private pri

methods

addBindableUpdater ( property ) private pri

Parameters

addDeprecations ( deprecations ) private pri

Parameters

applyBind ( binds, currentBindings ) : Object private pri

$className
private pri

$configPrefixed : Boolean
private pri

$configStrict : Boolean
private pri

clearPropertiesOnDestroy : Boolean / "async"
protected pro

clearPrototypeOnDestroy : Boolean
private pri

defaultBindProperty : String
protected pro

destroyed : Boolean
protected pro

isConfiguring : Boolean
readonly ro protected pro

isFirstInstance : Boolean
readonly ro protected pro

isInstance : Boolean
readonly ro protected pro

self : Ext.Class
protected pro

validRefRe : RegExp
private pri

$onExtended
static sta private pri

addBindableUpdater ( property )
private pri

addDeprecations ( deprecations )
private pri

applyBind ( binds, currentBindings ) : Object
private pri

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

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

callOverridden ( args ) : Object
deprecated dep protected pro

callParent ( args ) : Object
protected pro

callSuper ( args ) : Object
protected pro

getCurrentConfig
private pri

hasConfig ( name )
private pri

initBindable
private pri

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

initInheritedState ( inheritedState )
protected pro

isSyncing ( name ) : Boolean
private pri

link ( name, value ) : Object
private pri

makeBindableUpdater ( cfg ) : Function
private pri

publishState ( [property], [value] )
protected pro

setConfig ( name, [value] ) : Ext.Base
chainable ch