Ext.event.Controller

Hierarchy

Ext.Base
Ext.event.Controller

Files

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

Properties

Defined By

Instance properties

Ext.event.Controller
view source
: Booleanprivate
...

Defaults to: false

Ext.event.Controller
view source
: Objectprivate
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'
    },

    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'
Defined By

Static properties

...

Defaults to: []

Methods

Defined By

Instance methods

Ext.event.Controller
view source
new( info ) : Ext.event.Controller
...

Parameters

Returns

Fires

    Call the original method that was previously overridden with override, This method is deprecated as callParent does ...

    Call the original method that was previously overridden with override,

    This method is deprecated as callParent does the same thing.

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

    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

    Call the "parent" method of the current method. ...

    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 methods.

     Ext.define('My.Derived2', {
         extend: 'My.Base',
    
         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',
    
         statics: {
             method: function (x) {
                 return this.callParent([x*2]); // calls My.Derived2.method
             }
         }
     });
    
     alert(My.Derived2.method(10)); // now alerts 40
    

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

    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

    This method is used by an override to call the superclass method but bypass any overridden method. ...

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

    Consider:

     Ext.define('Ext.some.Class', {
         method: function () {
             console.log('Good');
         }
     });
    
     Ext.define('Ext.some.DerivedClass', {
         method: function () {
             console.log('Bad');
    
             // ... logic but with a bug ...
    
             this.callParent();
         }
     });
    

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

     Ext.define('App.paches.DerivedClass', {
         override: 'Ext.some.DerivedClass',
    
         method: function () {
             console.log('Fixed');
    
             // ... logic but with bug fixed ...
    
             this.callSuper();
         }
     });
    

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

    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.event.Controller
    view source
    ( controller )private
    ...

    Parameters

    Ext.event.Controller
    view source
    ( )private
    ...

    Fires

      Ext.event.Controller
      view source
      ( args, action ) : Ext.event.Controllerchainableprivate
      ...

      Parameters

      Returns

      Fires

        ...

        Parameters

        Ext.event.Controller
        view source
        ( )private
        ...
        Returns the initial configuration passed to constructor. ...

        Returns the initial configuration passed to constructor.

        Parameters

        • name : String (optional)

          When supplied, value for particular configuration option is returned, otherwise the full config object is returned.

        Returns

        ...

        Parameters

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

        Parameters

        Returns

        • Object

          mixins The mixin prototypes as key - value pairs

        Fires

          Ext.event.Controller
          view source
          ( )private
          ...
          ( names, callback, scope )private
          ...

          Parameters

          Ext.event.Controller
          view source
          ( ) : Ext.event.Controllerchainableprivate
          ...
          Ext.event.Controller
          view source
          ( ) : Ext.event.Controllerchainableprivate
          ...

          Returns

          Fires

            ( config, applyIfNotSet ) : Ext.Basechainableprivate
            ...

            Parameters

            Returns

            Ext.event.Controller
            view source
            ( info )private
            ...

            Parameters

            Ext.event.Controller
            view source
            ( listenerStacks )private
            ...

            Parameters

            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++;
                },
            
                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.event.Controller
            view source
            ( ) : Ext.event.Controllerchainableprivate
            ...
            Defined By

            Static methods

            ( config, fullMerge )privatestatic
            ...

            Parameters

            ( members )chainableprivatestatic
            ...

            Parameters

            ( name, member )chainableprivatestatic
            ...

            Parameters

            ( members )chainablestatic
            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.addMembers({
                 meow: function() {
                    alert('Meowww...');
                 }
             });
            
             var kitty = new My.awesome.Cat();
             kitty.meow();
            

            Parameters

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

            Add / override static properties of this class.

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

            Returns

            ( xtype )chainableprivatestatic
            ...

            Parameters

            ( fromClass, members ) : Ext.Basechainableprivatestatic
            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 '$$$'
            steve.printMoney(); // alerts '$$$$$$$'
            

            Parameters

            • fromClass : Ext.Base

              The class to borrow members from

            • members : Array/String

              The names of the members to borrow

            Returns

            ( args )protectedstatic
            ...

            Parameters

            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.

            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()
            

            Parameters

            ( parent )privatestatic
            ...

            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'
            

            Returns

            ...
            ( name, mixinClass )privatestatic
            Used internally by the mixins pre-processor ...

            Used internally by the mixins pre-processor

            Parameters

            ( fn, scope )chainableprivatestatic
            ...

            Parameters

            ( members ) : Ext.Basechainabledeprecatedstatic
            Override members of this class. ...

            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!");
            
                    var instance = this.callParent(arguments);
            
                    alert("Meeeeoooowwww");
            
                    return instance;
                }
            });
            
            var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
                                      // alerts "I'm a cat!"
                                      // alerts "Meeeeoooowwww"
            

            As of 2.1, direct use of this method is deprecated. Use Ext.define instead:

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

            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).

            This method has been deprecated since 2.1.0

            Please use Ext.define instead

            Parameters

            • members : Object

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

            Returns