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Class

CKEDITOR.plugins.notificationAggregator.task

class since 4.5.0
See source

Overview

This type represents a single task in the aggregator, and exposes methods to manipulate its state.

Weights

Task progess is based on its weight.

As you create a task, you need to declare its weight. As you want the update to inform about the progress, you will need to update the task, telling how much of this weight is done.

For example, if you declare that your task has a weight that equals 50 and then call update with 10, you will end up with telling that the task is done in 20%.

Example Usage of Weights

Let us say that you use tasks for file uploading.

A single task is associated with a single file upload. You can use the file size in bytes as a weight, and then as the file upload progresses you just call the update method with the number of bytes actually downloaded.

Filtering

Properties

  • private

    _doneWeight : Number

    See source

    Done weight of the task.

    Defaults to 0

  • private

    _isCanceled : Boolean

    See source

    Indicates when the task is canceled.

    Defaults to false

  • private

    _weight : Number

    See source

    Total weight of the task.

Static properties

Methods

  • constructor( [ weight ] ) → task

    See source

    Creates a task instance for notification aggregator.

    Parameters

    [ weight ] : Number

    Defaults to 1

    Returns

    task

  • cancel()

    See source

    Cancels the task (the task will be removed from the aggregator).

  • capture()

    See source

    Register event handler under the capturing stage on supported target.

  • define( name, meta )

    See source

    Predefine some intrinsic properties on a specific event name.

    Parameters

    name : String

    The event name

    meta : Object

  • done()

    See source

    Marks the task as done.

  • fire( eventName, [ data ], [ editor ] ) → Boolean | Object

    See source

    Fires an specific event in the object. All registered listeners are called at this point.

    someObject.on( 'someEvent', function() { ... } );
someObject.on( 'someEvent', function() { ... } );
someObject.fire( 'someEvent' );             // Both listeners are called.

someObject.on( 'someEvent', function( event ) {
    alert( event.data );                    // 'Example'
} );
someObject.fire( 'someEvent', 'Example' );

    Parameters

    eventName : String

    The event name to fire.

    [ data ] : Object

    Data to be sent as the CKEDITOR.eventInfo.data when calling the listeners.

    [ editor ] : editor

    The editor instance to send as the CKEDITOR.eventInfo.editor when calling the listener.

    Returns

    Boolean | Object

    A boolean indicating that the event is to be canceled, or data returned by one of the listeners.

  • fireOnce( eventName, [ data ], [ editor ] ) → Boolean | Object

    See source

    Fires an specific event in the object, releasing all listeners registered to that event. The same listeners are not called again on successive calls of it or of fire.

    someObject.on( 'someEvent', function() { ... } );
someObject.fire( 'someEvent' );         // Above listener called.
someObject.fireOnce( 'someEvent' );     // Above listener called.
someObject.fire( 'someEvent' );         // No listeners called.

    Parameters

    eventName : String

    The event name to fire.

    [ data ] : Object

    Data to be sent as the CKEDITOR.eventInfo.data when calling the listeners.

    [ editor ] : editor

    The editor instance to send as the CKEDITOR.eventInfo.editor when calling the listener.

    Returns

    Boolean | Object

    A booloan indicating that the event is to be canceled, or data returned by one of the listeners.

  • hasListeners( eventName ) → Boolean

    See source

    Checks if there is any listener registered to a given event.

    var myListener = function() { ... };
someObject.on( 'someEvent', myListener );
alert( someObject.hasListeners( 'someEvent' ) );    // true
alert( someObject.hasListeners( 'noEvent' ) );      // false

    Parameters

    eventName : String

    The event name.

    Returns

    Boolean

  • isCanceled() → Boolean

    See source

    Checks if the task is canceled.

    Returns

    Boolean

  • isDone() → Boolean

    See source

    Checks if the task is done.

    Returns

    Boolean

  • on( eventName, listenerFunction, [ scopeObj ], [ listenerData ], [ priority ] ) → Object

    See source

    Registers a listener to a specific event in the current object.

    someObject.on( 'someEvent', function() {
    alert( this == someObject );        // true
} );

someObject.on( 'someEvent', function() {
    alert( this == anotherObject );     // true
}, anotherObject );

someObject.on( 'someEvent', function( event ) {
    alert( event.listenerData );        // 'Example'
}, null, 'Example' );

someObject.on( 'someEvent', function() { ... } );                       // 2nd called
someObject.on( 'someEvent', function() { ... }, null, null, 100 );      // 3rd called
someObject.on( 'someEvent', function() { ... }, null, null, 1 );        // 1st called

    Note: CKEditor's event system has a limitation that one function cannot be used as a listener for the same event more than once. Hence, to reuse it with multiple listeners, it should be wrapped into additional wrapper function:

    function listener( evt ) { ... };

someObject.on( 'someEvent', function() {
    listener();
} );

someObject.on( 'someEvent', function( evt ) {
    listener( evt );
} );

    Parameters

    eventName : String

    The event name to which listen.

    listenerFunction : Function

    The function listening to the event. A single CKEDITOR.eventInfo object instanced is passed to this function containing all the event data.

    [ scopeObj ] : Object

    The object used to scope the listener call (the this object). If omitted, the current object is used.

    [ listenerData ] : Object

    Data to be sent as the CKEDITOR.eventInfo.listenerData when calling the listener.

    [ priority ] : Number

    The listener priority. Lower priority listeners are called first. Listeners with the same priority value are called in registration order.

    Defaults to 10

    Returns

    Object

    An object containing the removeListener function, which can be used to remove the listener at any time.

  • once()

    See source

    Similiar with on but the listener will be called only once upon the next event firing.

    CKEDITOR.event.on

  • removeAllListeners()

    See source

    Remove all existing listeners on this object, for cleanup purpose.

  • removeListener( eventName, listenerFunction )

    See source

    Unregisters a listener function from being called at the specified event. No errors are thrown if the listener has not been registered previously.

    var myListener = function() { ... };
someObject.on( 'someEvent', myListener );
someObject.fire( 'someEvent' );                 // myListener called.
someObject.removeListener( 'someEvent', myListener );
someObject.fire( 'someEvent' );                 // myListener not called.

    Parameters

    eventName : String

    The event name.

    listenerFunction : Function

    The listener function to unregister.

  • update( weight )

    See source

    Updates the done weight of a task.

    Parameters

    weight : Number

    Number indicating how much of the total task _weight is done.

Static methods

  • mixed static

    implementOn( targetObject )

    See source

    Implements the CKEDITOR.event features in an object.

    var myObject = { message: 'Example' };
CKEDITOR.event.implementOn( myObject );

myObject.on( 'testEvent', function() {
    alert( this.message );
} );
myObject.fire( 'testEvent' ); // 'Example'

    Parameters

    targetObject : Object

    The object into which implement the features.

Events

  • canceled( evt )

    See source

    Fired when the task is canceled.

    Parameters

    evt : eventInfo

  • done( evt )

    See source

    Fired when the task is done.

    Parameters

    evt : eventInfo

  • updated( evt )

    See source

    Fired upon each weight update of the task.

    var myTask = new Task( 100 );
myTask.update( 30 );
// Fires updated event with evt.data = 30.
myTask.update( 40 );
// Fires updated event with evt.data = 10.
myTask.update( 20 );
// Fires updated event with evt.data = -20.

    Parameters

    evt : eventInfo