Ext.chart.label.Callout

Hierarchy

Ext.Base
Ext.draw.modifier.Modifier
Ext.chart.label.Callout

Files

This is a modifier to place labels and callouts by additional attributes.

Defined By

Config options

Next modifier that receives the pop-up changes.

Next modifier that receives the pop-up changes.

Previous modifier that receives the push-down changes.

Previous modifier that receives the push-down changes.

The sprite to which the modifier belongs.

The sprite to which the modifier belongs.

Properties

Defined By

Instance properties

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

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

...

Parameters

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

Returns the value of next. ...

Returns the value of next.

Returns

Returns the value of sprite. ...

Returns the value of sprite.

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

    ( names, callback, scope )private
    ...

    Parameters

    Ext.chart.label.Callout
    view source
    ( attr, changes )
    Invoked when changes need to be popped up to the top. ...

    Invoked when changes need to be popped up to the top.

    Parameters

    Fires

      Overrides: Ext.draw.modifier.Modifier.popUp

      Ext.chart.label.Callout
      view source
      ( attr )
      Validate attribute set before use. ...

      Validate attribute set before use.

      Parameters

      Overrides: Ext.draw.modifier.Modifier.prepareAttributes

      Ext.chart.label.Callout
      view source
      ( attr, changes ) : Mixed
      Invoked when changes need to be pushed down to the sprite. ...

      Invoked when changes need to be pushed down to the sprite.

      Parameters

      Returns

      • Mixed

      Fires

        Overrides: Ext.draw.modifier.Modifier.pushDown

        Ext.chart.label.Callout
        view source
        ( attr, changes )private
        ...

        Parameters

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

        Parameters

        Returns

        Sets the value of next. ...

        Sets the value of next.

        Parameters

        Sets the value of previous. ...

        Sets the value of previous.

        Parameters

        Sets the value of sprite. ...

        Sets the value of sprite.

        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

        ...

        Parameters

        ...

        Parameters

        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