Ext JS 4.1.3 Sencha Docs

Ext.chart.Mask

Hierarchy

Ext.Base
Ext.chart.Mask

Requires

Mixed into

Files

Defines a mask for a chart's series. The 'chart' member must be set prior to rendering.

A Mask can be used to select a certain region in a chart. When enabled, the select event will be triggered when a region is selected by the mask, allowing the user to perform other tasks like zooming on that region, etc.

In order to use the mask one has to set the Chart mask option to true, vertical or horizontal. Then a possible configuration for the listener could be:

items: {
    xtype: 'chart',
    animate: true,
    store: store1,
    mask: 'horizontal',
    listeners: {
        select: {
            fn: function(me, selection) {
                me.setZoom(selection);
                me.mask.hide();
            }
        }
    }
}

In this example we zoom the chart to that particular region. You can also get a handle to a mask instance from the chart object. The chart.mask element is a Ext.Panel.

Available since: 4.0.0

Defined By

Config options

Enables selecting a region on chart. ...

Enables selecting a region on chart. True to enable any selection, 'horizontal' or 'vertical' to restrict the selection to X or Y axis.

The mask in itself will do nothing but fire 'select' event. See Ext.chart.Mask for example.

Available since: 4.1.0

Properties

Defined By

Instance properties

...

Defaults to: 'Ext.Base'

Available since: 4.1.1

...

Defaults to: {}

Available since: 4.1.1

...

Defaults to: []

Available since: 4.1.1

...

Defaults to: {}

Available since: 4.1.1

...

Defaults to: true

Available since: 4.1.1

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'

Available since: 4.0.0

Defined By

Static properties

...

Defaults to: []

Available since: 4.1.1

Methods

Defined By

Instance methods

Ext.chart.Mask
view source
new( [config] ) : Ext.chart.Mask
Creates new Mask. ...

Creates new Mask.

Available since: 4.0.0

Parameters

  • config : Object (optional)

    Config object.

Returns

Fires

    Overrides: Ext.Component.constructor

    ( args ) : Objectdeprecatedprotected
    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!");
        }
    });
    
    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"
    

    Available since: 4.0.0

    This method has been deprecated

    as of 4.1. Use callParent instead.

    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.

    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 of calling the parent method

    ( args ) : Objectprotected
    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".

    Available since: Ext JS 4.1.3

    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

    ...

    Available since: 4.1.1

    ...

    Available since: 4.1.0

    Parameters

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

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

    Available since: 4.1.0

    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.chart.Mask
    view source
    ( e )private
    ...

    Available since: 4.1.2

    Parameters

    ...

    Available since: 4.1.0

    Parameters

    ( config ) : Ext.Basechainableprotected
    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'
    

    Available since: 4.0.0

    Parameters

    Returns

    ( names, callback, scope )private
    ...

    Available since: 4.1.0

    Parameters

    Ext.chart.Mask
    view source
    ( e )private
    ...

    Available since: 4.0.0

    Parameters

    Fires

      Ext.chart.Mask
      view source
      ( e )private
      ...

      Available since: 4.0.0

      Parameters

      Ext.chart.Mask
      view source
      ( e )private
      ...

      Available since: 4.0.0

      Parameters

      Fires

        Ext.chart.Mask
        view source
        ( e )private
        ...

        Available since: 4.0.0

        Parameters

        Fires

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

        Available since: 4.0.0

        Parameters

        Returns

        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
        

        Available since: 4.0.0

        Returns

        Defined By

        Static methods

        ( config )privatestatic
        ...

        Available since: 4.1.1

        Parameters

        ( members )chainableprivatestatic
        ...

        Available since: 4.1.1

        Parameters

        ( name, member )chainableprivatestatic
        ...

        Available since: 4.1.1

        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();
        

        Available since: 4.1.0

        Parameters

        ( 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

        ( xtype )chainableprivatestatic
        ...

        Available since: 4.1.1

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

        Available since: 4.0.2

        Parameters

        • fromClass : Ext.Base

          The class to borrow members from

        • members : Array/String

          The names of the members to borrow

        Returns

        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

        Overrides: Ext.layout.Layout.create

        ( 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

        ( config )privatestatic
        ...

        Available since: 4.1.1

        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

        ( )deprecatedstatic
        Adds members to class. ...

        Adds members to class.

        Available since: 4.0.2

        This method has been deprecated since 4.1

        Use addMembers instead.

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

        Used internally by the mixins pre-processor

        Available since: 4.1.1

        Parameters

        ( fn, scope )chainableprivatestatic
        ...

        Available since: 4.1.1

        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!");
        
                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"
        

        As of 4.1, 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!");
        
                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).

        Available since: 4.0.2

        This method has been deprecated since 4.1.0

        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

        ...

        Available since: 4.1.1