Ext JS 4.0.7 Sencha Docs

Ext.util.Observable

Hierarchy

Ext.Base
Ext.util.Observable

Requires

Subclasses

Mixed into

Files

Base class that provides a common interface for publishing events. Subclasses are expected to to have a property "events" with all the events defined, and, optionally, a property "listeners" with configured listeners defined.

For example:

Ext.define('Employee', {
    extend: 'Ext.util.Observable',
    constructor: function(config){
        this.name = config.name;
        this.addEvents({
            "fired" : true,
            "quit" : true
        });

        // Copy configured listeners into *this* object so that the base class's
        // constructor will add them.
        this.listeners = config.listeners;

        // Call our superclass constructor to complete construction process.
        this.callParent(arguments)
    }
});

This could then be used like this:

var newEmployee = new Employee({
    name: employeeName,
    listeners: {
        quit: function() {
            // By default, "this" will be the object that fired the event.
            alert(this.name + " has quit!");
        }
    }
});

Available since: 1.1.0

Defined By

Config options

Ext.util.Observable
view source
: Object
A config object containing one or more event handlers to be added to this object during initialization. ...

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 Components

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'); }
        }
    }
});

Available since: 1.1.0

Defined By

Properties

Available since: 4.0.0

Ext.util.Observable
view source
: RegExpprivate
...

Defaults to: /^(?:scope|delay|buffer|single|stopEvent|preventDefault|stopPropagation|normalized|args|delegate|element|vertical|horizontal|freezeEvent)$/

Available since: 4.0.0

Ext.util.Observable
view source
: Booleanprivate
...

Defaults to: true

Available since: 4.0.0

Get the reference to the current class from which this object was instantiated. ...

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

        return 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'

Available since: 4.0.0

Methods

Defined By

Instance methods

Ext.util.Observable
view source
( o, [more] )
Adds the specified events to the list of events which this Observable may fire. ...

Adds the specified events to the list of events which this Observable may fire.

Available since: 1.1.0

Parameters

  • o : Object/String

    Either an object with event names as properties with a value of true or the first event name string if multiple event names are being passed as separate parameters. Usage:

    this.addEvents({
        storeloaded: true,
        storecleared: true
    });
    
  • more : String... (optional)

    Additional event names if multiple event names are being passed as separate parameters. Usage:

    this.addEvents('storeloaded', 'storecleared');
    
...

Available since: 4.0.6

Parameters

Returns

Ext.util.Observable
view source
( eventName, fn, [scope], [options] )
Appends an event handler to this object. ...

Appends an event handler to this object.

Available since: 1.1.0

Parameters

  • eventName : String

    The name of the event to listen for. May also be an object who's property names are event names.

  • fn : Function

    The method the event invokes. Will be called with arguments given to 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: Unlike in ExtJS 3.x, 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.

    • target : 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 Components. The name of a Component property which references an element to add a listener to.

      This option is useful during Component construction to add DOM event listeners to elements of Components which will exist only after the Component is rendered. For example, to add a click listener to a Panel's body:

      new Ext.panel.Panel({
          title: 'The title',
          listeners: {
              click: this.handlePanelClick,
              element: 'body'
          }
      });
      

    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 events. For example:

    myGridPanel.on({
        cellClick: this.onCellClick,
        mouseover: this.onMouseOver,
        mouseout: this.onMouseOut,
        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},
        mouseover: {fn: panel.onMouseOver, scope: panel}
    });
    

Fires

    Ext.util.Observable
    view source
    ( item, ename, [fn], [scope], [opt] )
    Adds listeners to any Observable object (or Ext.Element) which are automatically removed when this Component is destr...

    Adds listeners to any Observable object (or Ext.Element) which are automatically removed when this Component is destroyed.

    Available since: 4.0.0

    Parameters

    • item : Ext.util.Observable/Ext.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 (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.

    • opt : Object (optional)

      If the ename parameter was an event name, this is the addListener options.

    Fires

      Call the original method that was previously overridden with override Ext.define('My.Cat', { constructor: functi...

      Call the original method that was previously overridden with override

      Ext.define('My.Cat', {
          constructor: function() {
              alert("I'm a cat!");
      
              return this;
          }
      });
      
      My.Cat.override({
          constructor: function() {
              alert("I'm going to be a cat!");
      
              var instance = this.callOverridden();
      
              alert("Meeeeoooowwww");
      
              return instance;
          }
      });
      
      var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
                                // alerts "I'm a cat!"
                                // alerts "Meeeeoooowwww"
      

      Available since: 4.0.0

      Parameters

      • args : Array/Arguments

        The arguments, either an array or the arguments object

      Returns

      • Object

        Returns the result after calling the overridden method

      Call the parent's overridden method. ...

      Call the parent's overridden method. For example:

      Ext.define('My.own.A', {
          constructor: function(test) {
              alert(test);
          }
      });
      
      Ext.define('My.own.B', {
          extend: 'My.own.A',
      
          constructor: function(test) {
              alert(test);
      
              this.callParent([test + 1]);
          }
      });
      
      Ext.define('My.own.C', {
          extend: 'My.own.B',
      
          constructor: function() {
              alert("Going to call parent's overriden constructor...");
      
              this.callParent(arguments);
          }
      });
      
      var a = new My.own.A(1); // alerts '1'
      var b = new My.own.B(1); // alerts '1', then alerts '2'
      var c = new My.own.C(2); // alerts "Going to call parent's overriden constructor..."
                               // alerts '2', then alerts '3'
      

      Available since: 4.0.0

      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 from the superclass' method

      Ext.util.Observable
      view source
      ( )
      Removes all listeners for this object including the managed listeners ...

      Removes all listeners for this object including the managed listeners

      Available since: 4.0.0

      Fires

        Ext.util.Observable
        view source
        ( )
        Removes all managed listeners for this object. ...

        Removes all managed listeners for this object.

        Available since: 4.0.0

        Fires

          Ext.util.Observable
          view source
          ( eventName, args, bubbles )private
          Continue to fire event. ...

          Continue to fire event.

          Available since: Ext JS 4.0.7

          Parameters

          Fires

            Ext.util.Observable
            view source
            ( newName ) : Functionprivate
            Creates an event handling function which refires the event from this object as the passed event name. ...

            Creates an event handling function which refires the event from this object as the passed event name.

            Available since: 4.0.0

            Parameters

            Returns

            Ext.util.Observable
            view source
            ( events )
            Enables events fired by this Observable to bubble up an owner hierarchy by calling this.getBubbleTarget() if present. ...

            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.override(Ext.form.field.Base, {
                //  Add functionality to Field's initComponent to enable the change event to bubble
                initComponent : Ext.Function.createSequence(Ext.form.field.Base.prototype.initComponent, function() {
                    this.enableBubble('change');
                }),
            
                //  We know that we want Field's events to bubble directly to the FormPanel.
                getBubbleTarget : function() {
                    if (!this.formPanel) {
                        this.formPanel = this.findParentByType('form');
                    }
                    return this.formPanel;
                }
            });
            
            var myForm = new Ext.formPanel({
                title: 'User Details',
                items: [{
                    ...
                }],
                listeners: {
                    change: function() {
                        // Title goes red if form has been modified.
                        myForm.header.setStyle('color', 'red');
                    }
                }
            });
            

            Available since: 3.4.0

            Parameters

            • events : String/String[]

              The event name to bubble, or an Array of event names.

            Ext.util.Observable
            view source
            ( eventName, args ) : Boolean
            Fires the specified event with the passed parameters (minus the event name, plus the options object passed to addList...

            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.

            Available since: 1.1.0

            Parameters

            • eventName : String

              The name of the event to fire.

            • args : Object...

              Variable number of parameters are passed to handlers.

            Returns

            • Boolean

              returns false if any of the handlers return false otherwise it returns true.

            Fires

              Ext.util.Observable
              view source
              ( ) : Ext.util.Observableprivate
              Gets the bubbling parent for an Observable ...

              Gets the bubbling parent for an Observable

              Available since: Ext JS 4.0.7

              Returns

              Fires

                Ext.util.Observable
                view source
                ( eventName ) : Boolean
                Checks to see if this object has any listeners for a specified event ...

                Checks to see if this object has any listeners for a specified event

                Available since: 1.1.0

                Parameters

                • eventName : String

                  The name of the event to check for

                Returns

                • Boolean

                  True if the event is being listened for, else false

                ( config ) : Objectchainableprotected
                Initialize configuration for this class. ...

                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);
                
                        return this;
                    }
                });
                
                var awesome = new My.awesome.Class({
                    name: 'Super Awesome'
                });
                
                alert(awesome.getName()); // 'Super Awesome'
                

                Available since: 4.0.0

                Parameters

                Returns

                • Object

                  mixins The mixin prototypes as key - value pairs

                Fires

                  ( name, cls )private
                  Used internally by the mixins pre-processor ...

                  Used internally by the mixins pre-processor

                  Available since: 4.0.6

                  Parameters

                  Fires

                    Ext.util.Observable
                    view source
                    ( item, ename, [fn], [scope], [opt] )
                    Shorthand for addManagedListener. ...

                    Shorthand for addManagedListener.

                    Available since: 4.0.2

                    Parameters

                    • item : Ext.util.Observable/Ext.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 (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.

                    • opt : Object (optional)

                      If the ename parameter was an event name, this is the addListener options.

                    Ext.util.Observable
                    view source
                    ( item, ename, [fn], [scope] )
                    Shorthand for removeManagedListener. ...

                    Shorthand for removeManagedListener.

                    Available since: 4.0.2

                    Parameters

                    • item : Ext.util.Observable/Ext.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.

                    Ext.util.Observable
                    view source
                    ( eventName, fn, [scope], [options] )
                    Shorthand for addListener. ...

                    Shorthand for addListener.

                    Available since: 1.1.0

                    Parameters

                    • eventName : String

                      The name of the event to listen for. May also be an object who's property names are event names.

                    • fn : Function

                      The method the event invokes. Will be called with arguments given to 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: Unlike in ExtJS 3.x, 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.

                      • target : 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 Components. The name of a Component property which references an element to add a listener to.

                        This option is useful during Component construction to add DOM event listeners to elements of Components which will exist only after the Component is rendered. For example, to add a click listener to a Panel's body:

                        new Ext.panel.Panel({
                            title: 'The title',
                            listeners: {
                                click: this.handlePanelClick,
                                element: 'body'
                            }
                        });
                        

                      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 events. For example:

                      myGridPanel.on({
                          cellClick: this.onCellClick,
                          mouseover: this.onMouseOver,
                          mouseout: this.onMouseOut,
                          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},
                          mouseover: {fn: panel.onMouseOver, scope: panel}
                      });
                      
                    ( name, value )private
                    ...

                    Available since: 4.0.6

                    Parameters

                    Fires

                      ( name, fn )private
                      ...

                      Available since: 4.0.0

                      Parameters

                      Ext.util.Observable
                      view source
                      ( )private
                      ...

                      Available since: 1.1.0

                      Ext.util.Observable
                      view source
                      ( )private
                      ...

                      Available since: 4.0.0

                      Ext.util.Observable
                      view source
                      ( origin, events, prefix )
                      Relays selected events from the specified Observable as if the events were fired by this. ...

                      Relays selected events from the specified Observable as if the events were fired by this.

                      Available since: 2.3.0

                      Parameters

                      • origin : Object

                        The Observable whose events this object is to relay.

                      • events : String[]

                        Array of event names to relay.

                      • prefix : String

                      Fires

                        Ext.util.Observable
                        view source
                        ( eventName, fn, [scope] )
                        Removes an event handler. ...

                        Removes an event handler.

                        Available since: 1.1.0

                        Parameters

                        • 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 addListener or the listener will not be removed.

                        Fires

                          Ext.util.Observable
                          view source
                          ( item, ename, [fn], [scope] )
                          Removes listeners that were added by the mon method. ...

                          Removes listeners that were added by the mon method.

                          Available since: 4.0.0

                          Parameters

                          • item : Ext.util.Observable/Ext.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.

                          Fires

                            Ext.util.Observable
                            view source
                            ( isClear, managedListener )private
                            Remove a single managed listener item ...

                            Remove a single managed listener item

                            Available since: 4.0.1

                            Parameters

                            • isClear : Boolean

                              True if this is being called during a clear

                            • managedListener : Object

                              The managed listener item See removeManagedListener for other args

                            Ext.util.Observable
                            view source
                            ( )
                            Resumes firing events (see suspendEvents). ...

                            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.

                            Available since: 2.3.0

                            ( config ) : Ext.Basechainableprivate
                            ...

                            Available since: 4.0.0

                            Parameters

                            Returns

                            Fires

                              Get the reference to the class from which this object was instantiated. ...

                              Get the reference to the class from which this object was instantiated. Note that unlike 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++;
                              
                                      return this;
                                  },
                              
                                  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
                              

                              Available since: 4.0.0

                              Returns

                              Ext.util.Observable
                              view source
                              ( queueSuspended )
                              Suspends the firing of all events. ...

                              Suspends the firing of all events. (see resumeEvents)

                              Available since: 2.3.0

                              Parameters

                              • queueSuspended : Boolean

                                Pass as true to queue up suspended events to be fired after the resumeEvents call instead of discarding all suspended events.

                              Ext.util.Observable
                              view source
                              ( eventName, fn, [scope] )
                              Shorthand for removeListener. ...

                              Shorthand for removeListener.

                              Available since: 1.1.0

                              Parameters

                              • 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 addListener or the listener will not be removed.

                              Defined By

                              Static methods

                              ( members ) : Ext.Basechainablestatic
                              Add / override static properties of this class. ...

                              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() { ... };
                              });
                              

                              Available since: 4.0.2

                              Parameters

                              Returns

                              ( fromClass, members ) : Ext.Basechainablestatic
                              Borrow another class' members to the prototype of this class. ...

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

                              Available since: 4.0.2

                              Parameters

                              • fromClass : Ext.Base

                                The class to borrow members from

                              • members : String/String[]

                                The names of the members to borrow

                              Returns

                              Ext.util.Observable
                              view source
                              ( o, fn, [scope] )static
                              Starts capture on the specified Observable. ...

                              Starts capture on the specified Observable. All events will be passed to the supplied function with the event name + standard signature of the event before the event is fired. If the supplied function returns false, the event will not fire.

                              Available since: 1.1.0

                              Parameters

                              • o : Ext.util.Observable

                                The Observable to capture events from.

                              • fn : Function

                                The function to call when an event is fired.

                              • scope : Object (optional)

                                The scope (this reference) in which the function is executed. Defaults to the Observable firing the event.

                              Create a new instance of this Class. ...

                              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.

                              Available since: 4.0.2

                              Returns

                              ( alias, origin )static
                              Create aliases for existing prototype methods. ...

                              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()
                              

                              Available since: 4.0.2

                              Parameters

                              Get the current class' name in string format. ...

                              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'
                              

                              Available since: 4.0.4

                              Returns

                              Add methods / properties to the prototype of this class. ...

                              Add methods / properties to the prototype of this class.

                              Ext.define('My.awesome.Cat', {
                                  constructor: function() {
                                      ...
                                  }
                              });
                              
                               My.awesome.Cat.implement({
                                   meow: function() {
                                      alert('Meowww...');
                                   }
                               });
                              
                               var kitty = new My.awesome.Cat;
                               kitty.meow();
                              

                              Available since: 4.0.2

                              Parameters

                              Ext.util.Observable
                              view source
                              ( c, listeners )static
                              Sets observability on the passed class constructor. ...

                              Sets observability on the passed class constructor.

                              This makes any event fired on any instance of the passed class also fire a single event through the class allowing for central handling of events on many instances at once.

                              Usage:

                              Ext.util.Observable.observe(Ext.data.Connection);
                              Ext.data.Connection.on('beforerequest', function(con, options) {
                                  console.log('Ajax request made to ' + options.url);
                              });
                              

                              Available since: 4.0.0

                              Parameters

                              • c : Function

                                The class constructor to make observable.

                              • listeners : Object

                                An object containing a series of listeners to add. See addListener.

                              ( members ) : Ext.Basechainablestatic
                              Override prototype members of this class. ...

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

                              Ext.define('My.Cat', {
                                  constructor: function() {
                                      alert("I'm a cat!");
                              
                                      return this;
                                  }
                              });
                              
                              My.Cat.override({
                                  constructor: function() {
                                      alert("I'm going to be a cat!");
                              
                                      var instance = this.callOverridden();
                              
                                      alert("Meeeeoooowwww");
                              
                                      return instance;
                                  }
                              });
                              
                              var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
                                                        // alerts "I'm a cat!"
                                                        // alerts "Meeeeoooowwww"
                              

                              Available since: 4.0.2

                              Parameters

                              Returns

                              Ext.util.Observable
                              view source
                              ( o )static
                              Removes all added captures from the Observable. ...

                              Removes all added captures from the Observable.

                              Available since: 1.1.0

                              Parameters