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Class

EasyImage (easy-image)

@ckeditor/ckeditor5-easy-image/src/easyimage

class

The Easy Image feature.

For a detailed overview, check the Image upload feature documentation and the package page.

After enabling the Easy Image plugin you need to configure the CKEditor Cloud Services integration through config.cloudServices.

This is a "glue" plugin which enables:

Filtering

Properties

  • editor : Editor

    readonly inherited

    The editor instance.

    Note that most editors implement the EditorWithUI interface in addition to the base Editor interface. However, editors with an external UI (i.e. Bootstrap-based) or a headless editor may not implement the EditorWithUI interface.

    Because of above, to make plugins more universal, it is recommended to split features into:

    • The "editing" part that only uses the Editor interface.
    • The "UI" part that uses both the Editor interface and the EditorWithUI interface.

Static properties

  • pluginName : String | undefined

    readonly inherited static

    An optional name of the plugin. If set, the plugin will be available in get by its name and its constructor. If not, then only by its constructor.

    The name should reflect the constructor name.

    To keep the plugin class definition tight it is recommended to define this property as a static getter:

    export default class ImageCaption {
    static get pluginName() {
        return 'ImageCaption';
    }
}

    Note: The native Function.name property could not be used to keep the plugin name because it will be mangled during code minification.

    Naming a plugin is necessary to enable removing it through the config.removePlugins option.

  • requires : Array.<Function> | undefined

    readonly inherited static

    An array of plugins required by this plugin.

    To keep the plugin class definition tight it is recommended to define this property as a static getter:

    import Image from './image.js';

export default class ImageCaption {
    static get requires() {
        return [ Image ];
    }
}

Methods

  • constructor( editor )

    inherited

    Creates a new plugin instance. This is the first step of the plugin initialization. See also init and afterInit.

    A plugin is always instantiated after its dependencies and the init and afterInit methods are called in the same order.

    Usually, you will want to put your plugin's initialization code in the init method. The constructor can be understood as "before init" and used in special cases, just like afterInit serves the special "after init" scenarios (e.g.the code which depends on other plugins, but which does not explicitly require them).

    Parameters

    editor : Editor

  • afterInit() → null | Promise

    inherited

    The third (and last) stage of plugin initialization. See also constructor and init.

    Note: This method is optional. A plugin instance does not need to have it defined.

    Returns

    null | Promise

  • bind( bindProperties ) → Object

    inherited

    Binds observable properties to another objects implementing Observable interface (like Model).

    Once bound, the observable will immediately share the current state of properties of the observable it is bound to and react to the changes to these properties in the future.

    Note: To release the binding use unbind.

    Using bind().to() chain:

    A.bind( 'a' ).to( B );
A.bind( 'a' ).to( B, 'b' );
A.bind( 'a', 'b' ).to( B, 'c', 'd' );
A.bind( 'a' ).to( B, 'b', C, 'd', ( b, d ) => b + d );

    It is also possible to bind to the same property in a observables collection using bind().toMany() chain:

    A.bind( 'a' ).toMany( [ B, C, D ], 'x', ( a, b, c ) => a + b + c );
A.bind( 'a' ).toMany( [ B, C, D ], 'x', ( ...x ) => x.every( x => x ) );

    Parameters

    bindProperties : String

    Observable properties that will be bound to another observable(s).

    Returns

    Object

    The bind chain with the to() and toMany() methods.

  • decorate( methodName )

    inherited

    Turns the given methods of this object into event-based ones. This means that the new method will fire an event (named after the method) and the original action will be plugged as a listener to that event.

    This is a very simplified method decoration. Itself it doesn't change the behavior of a method (expect adding the event), but it allows to modify it later on by listening to the method's event.

    For example, in order to cancel the method execution one can stop the event:

    class Foo {
    constructor() {
        this.decorate( 'method' );
    }

    method() {
        console.log( 'called!' );
    }
}

const foo = new Foo();
foo.on( 'method', ( evt ) => {
    evt.stop();
}, { priority: 'high' } );

foo.method(); // Nothing is logged.

    Note: we used a high priority listener here to execute this callback before the one which calls the original method (which used the default priority).

    It's also possible to change the return value:

    foo.on( 'method', ( evt ) => {
    evt.return = 'Foo!';
} );

foo.method(); // -> 'Foo'

    Finally, it's possible to access and modify the parameters:

    method( a, b ) {
    console.log( `${ a }, ${ b }`  );
}

// ...

foo.on( 'method', ( evt, args ) => {
    args[ 0 ] = 3;

    console.log( args[ 1 ] ); // -> 2
}, { priority: 'high' } );

foo.method( 1, 2 ); // -> '3, 2'

    Parameters

    methodName : String

    Name of the method to decorate.

  • delegate( events ) → EmitterMixinDelegateChain

    inherited

    Delegates selected events to another Emitter. For instance: 

    emitterA.delegate( 'eventX' ).to( emitterB );
emitterA.delegate( 'eventX', 'eventY' ).to( emitterC );

    then eventX is delegated (fired by) emitterB and emitterC along with data:

    emitterA.fire( 'eventX', data );

    and eventY is delegated (fired by) emitterC along with data:

    emitterA.fire( 'eventY', data );

    Parameters

    events : String

    Event names that will be delegated to another emitter.

    Returns

    EmitterMixinDelegateChain

  • destroy() → null | Promise

    inherited

    Destroys the plugin.

    Note: This method is optional. A plugin instance does not need to have it defined.

    Returns

    null | Promise

  • fire( eventOrInfo, [ args ] ) → *

    inherited

    Fires an event, executing all callbacks registered for it.

    The first parameter passed to callbacks is an EventInfo object, followed by the optional args provided in the fire() method call.

    Parameters

    eventOrInfo : String | EventInfo

    The name of the event or EventInfo object if event is delegated.

    [ args ] : *

    Additional arguments to be passed to the callbacks.

    Returns

    *

    By default the method returns undefined. However, the return value can be changed by listeners through modification of the evt.return's property (the event info is the first param of every callback).

  • init() → null | Promise

    inherited

    The second stage (after plugin constructor) of plugin initialization. Unlike the plugin constructor this method can be asynchronous.

    A plugin's init() method is called after its dependencies are initialized, so in the same order as constructors of these plugins.

    Note: This method is optional. A plugin instance does not need to have it defined.

    Returns

    null | Promise

  • listenTo( emitter, event, callback, [ options ] = { [options.priority] } )

    inherited

    Registers a callback function to be executed when an event is fired in a specific (emitter) object.

    Events can be grouped in namespaces using :. When namespaced event is fired, it additionally fires all callbacks for that namespace.

    // myEmitter.on( ... ) is a shorthand for myEmitter.listenTo( myEmitter, ... ).
myEmitter.on( 'myGroup', genericCallback );
myEmitter.on( 'myGroup:myEvent', specificCallback );

// genericCallback is fired.
myEmitter.fire( 'myGroup' );
// both genericCallback and specificCallback are fired.
myEmitter.fire( 'myGroup:myEvent' );
// genericCallback is fired even though there are no callbacks for "foo".
myEmitter.fire( 'myGroup:foo' );

    An event callback can stop the event and set the return value of the fire method.

    Parameters

    emitter : Emitter

    The object that fires the event.

    event : String

    The name of the event.

    callback : function

    The function to be called on event.

    [ options ] : Object

    Additional options.

    Properties
    [ options.priority ] : PriorityString | Number

    The priority of this event callback. The higher the priority value the sooner the callback will be fired. Events having the same priority are called in the order they were added.

    Defaults to 'normal'

    Defaults to {}

  • off( event, callback )

    inherited

    Stops executing the callback on the given event. Shorthand for this.stopListening( this, event, callback ).

    Parameters

    event : String

    The name of the event.

    callback : function

    The function to stop being called.

  • on( event, callback, [ options ] = { [options.priority] } )

    inherited

    Registers a callback function to be executed when an event is fired.

    Shorthand for this.listenTo( this, event, callback, options ) (it makes the emitter listen on itself).

    Parameters

    event : String

    The name of the event.

    callback : function

    The function to be called on event.

    [ options ] : Object

    Additional options.

    Properties
    [ options.priority ] : PriorityString | Number

    The priority of this event callback. The higher the priority value the sooner the callback will be fired. Events having the same priority are called in the order they were added.

    Defaults to 'normal'

    Defaults to {}

  • once( event, callback, [ options ] = { [options.priority] } )

    inherited

    Registers a callback function to be executed on the next time the event is fired only. This is similar to calling on followed by off in the callback.

    Parameters

    event : String

    The name of the event.

    callback : function

    The function to be called on event.

    [ options ] : Object

    Additional options.

    Properties
    [ options.priority ] : PriorityString | Number

    The priority of this event callback. The higher the priority value the sooner the callback will be fired. Events having the same priority are called in the order they were added.

    Defaults to 'normal'

    Defaults to {}

  • set( name, [ value ] )

    inherited

    Creates and sets the value of an observable property of this object. Such an property becomes a part of the state and is be observable.

    It accepts also a single object literal containing key/value pairs with properties to be set.

    This method throws the observable-set-cannot-override error if the observable instance already have a property with the given property name. This prevents from mistakenly overriding existing properties and methods, but means that foo.set( 'bar', 1 ) may be slightly slower than foo.bar = 1.

    Parameters

    name : String | Object

    The property's name or object with name=>value pairs.

    [ value ] : *

    The property's value (if name was passed in the first parameter).

  • stopDelegating( [ event ], [ emitter ] )

    inherited

    Stops delegating events. It can be used at different levels:

    • To stop delegating all events.
    • To stop delegating a specific event to all emitters.
    • To stop delegating a specific event to a specific emitter.

    Parameters

    [ event ] : String

    The name of the event to stop delegating. If omitted, stops it all delegations.

    [ emitter ] : Emitter

    (requires event) The object to stop delegating a particular event to. If omitted, stops delegation of event to all emitters.

  • stopListening( [ emitter ], [ event ], [ callback ] )

    inherited

    Stops listening for events. It can be used at different levels:

    • To stop listening to a specific callback.
    • To stop listening to a specific event.
    • To stop listening to all events fired by a specific object.
    • To stop listening to all events fired by all objects.

    Parameters

    [ emitter ] : Emitter

    The object to stop listening to. If omitted, stops it for all objects.

    [ event ] : String

    (Requires the emitter) The name of the event to stop listening to. If omitted, stops it for all events from emitter.

    [ callback ] : function

    (Requires the event) The function to be removed from the call list for the given event.

  • unbind( [ unbindProperties ] )

    inherited

    Removes the binding created with bind. 

    A.unbind( 'a' );
A.unbind();

    Parameters

    [ unbindProperties ] : String

    Observable properties to be unbound. All the bindings will be released if no properties provided.

Events

  • change:{property}( eventInfo, name, value, oldValue )

    inherited

    Fired when a property changed value. 

    observable.set( 'prop', 1 );

observable.on( 'change:prop', ( evt, propertyName, newValue, oldValue ) => {
    console.log( `${ propertyName } has changed from ${ oldValue } to ${ newValue }` );
} );

observable.prop = 2; // -> 'prop has changed from 1 to 2'

    Parameters

    eventInfo : EventInfo

    An object containing information about the fired event.

    name : String

    The property name.

    value : *

    The new property value.

    oldValue : *

    The previous property value.

  • set:{property}( eventInfo, name, value, oldValue )

    inherited

    Fired when a property value is going to be set but is not set yet (before the change event is fired).

    You can control the final value of the property by using the event's return property.

    observable.set( 'prop', 1 );

observable.on( 'set:prop', ( evt, propertyName, newValue, oldValue ) => {
    console.log( `Value is going to be changed from ${ oldValue } to ${ newValue }` );
    console.log( `Current property value is ${ observable[ propertyName ] }` );

    // Let's override the value.
    evt.return = 3;
} );

observable.on( 'change:prop', ( evt, propertyName, newValue, oldValue ) => {
    console.log( `Value has changed from ${ oldValue } to ${ newValue }` );
} );

observable.prop = 2; // -> 'Value is going to be changed from 1 to 2'
                     // -> 'Current property value is 1'
                     // -> 'Value has changed from 1 to 3'

    Note: Event is fired even when the new value is the same as the old value.

    Parameters

    eventInfo : EventInfo

    An object containing information about the fired event.

    name : String

    The property name.

    value : *

    The new property value.

    oldValue : *

    The previous property value.