Dialog (ui/dialog)
@ckeditor/ckeditor5-ui/src/dialog/dialog
The dialog controller class. It is used to show and hide the DialogView
.
Filtering
Properties
-
The editor instance.
Note that most editors implement the
ui
property. However, editors with an external UI (i.e. Bootstrap-based) or a headless editor may not have this property or throw an error when accessing it.Because of above, to make plugins more universal, it is recommended to split features into:
-
The name of the currently visible dialog view instance.
-
Flag indicating whether a plugin is enabled or disabled. A disabled plugin will not transform text.
Plugin can be simply disabled like that:
// Disable the plugin so that no toolbars are visible. editor.plugins.get( 'TextTransformation' ).isEnabled = false;
You can also use
forceDisabled
method. -
A flag indicating whether the dialog is currently visible.
-
view : DialogView | undefined
module:ui/dialog/dialog~Dialog#view
The currently visible dialog view instance.
-
A configurable callback called when the dialog is hidden.
Static properties
-
private static
_visibleDialogPlugin : null | Dialog
module:ui/dialog/dialog~Dialog._visibleDialogPlugin
The
Dialog
plugin instance which most recently showed the dialog.Only one dialog can be visible at once, even if there are many editor instances on the page. If an editor wants to show a dialog, it should first hide the dialog that is already opened. But only the
Dialog
instance that showed the dialog is able able to properly hide it. This is why we need to store it in a globally available space (static property). This way everyDialog
plugin in every editor is able to correctly close any open dialog window.
Methods
-
constructor( editor )
module:ui/dialog/dialog~Dialog#constructor
-
inherited
bind( bindProperty1, bindProperty2 ) → DualBindChain<K1, Dialog[ K1 ], K2, Dialog[ K2 ]>
module:ui/dialog/dialog~Dialog#bind:DUAL_BIND
Binds observable properties to other objects implementing the
Observable
interface.Read more in the dedicated guide covering the topic of property bindings with some additional examples.
Consider two objects: a
button
and an associatedcommand
(bothObservable
).A simple property binding could be as follows:
button.bind( 'isEnabled' ).to( command, 'isEnabled' );
or even shorter:
button.bind( 'isEnabled' ).to( command );
which works in the following way:
button.isEnabled
instantly equalscommand.isEnabled
,- whenever
command.isEnabled
changes,button.isEnabled
will immediately reflect its value.
Note: To release the binding, use
unbind
.You can also "rename" the property in the binding by specifying the new name in the
to()
chain:button.bind( 'isEnabled' ).to( command, 'isWorking' );
It is possible to bind more than one property at a time to shorten the code:
button.bind( 'isEnabled', 'value' ).to( command );
which corresponds to:
button.bind( 'isEnabled' ).to( command ); button.bind( 'value' ).to( command );
The binding can include more than one observable, combining multiple data sources in a custom callback:
button.bind( 'isEnabled' ).to( command, 'isEnabled', ui, 'isVisible', ( isCommandEnabled, isUIVisible ) => isCommandEnabled && isUIVisible );
Using a custom callback allows processing the value before passing it to the target property:
button.bind( 'isEnabled' ).to( command, 'value', value => value === 'heading1' );
It is also possible to bind to the same property in an array of observables. To bind a
button
to multiple commands (alsoObservables
) so that each and every one of them must be enabled for the button to become enabled, use the following code:button.bind( 'isEnabled' ).toMany( [ commandA, commandB, commandC ], 'isEnabled', ( isAEnabled, isBEnabled, isCEnabled ) => isAEnabled && isBEnabled && isCEnabled );
Type parameters
K1
K2
Parameters
bindProperty1 : K1
Observable property that will be bound to other observable(s).
bindProperty2 : K2
Observable property that will be bound to other observable(s).
Returns
-
Binds observable properties to other objects implementing the
Observable
interface.Read more in the dedicated guide covering the topic of property bindings with some additional examples.
Consider two objects: a
button
and an associatedcommand
(bothObservable
).A simple property binding could be as follows:
button.bind( 'isEnabled' ).to( command, 'isEnabled' );
or even shorter:
button.bind( 'isEnabled' ).to( command );
which works in the following way:
button.isEnabled
instantly equalscommand.isEnabled
,- whenever
command.isEnabled
changes,button.isEnabled
will immediately reflect its value.
Note: To release the binding, use
unbind
.You can also "rename" the property in the binding by specifying the new name in the
to()
chain:button.bind( 'isEnabled' ).to( command, 'isWorking' );
It is possible to bind more than one property at a time to shorten the code:
button.bind( 'isEnabled', 'value' ).to( command );
which corresponds to:
button.bind( 'isEnabled' ).to( command ); button.bind( 'value' ).to( command );
The binding can include more than one observable, combining multiple data sources in a custom callback:
button.bind( 'isEnabled' ).to( command, 'isEnabled', ui, 'isVisible', ( isCommandEnabled, isUIVisible ) => isCommandEnabled && isUIVisible );
Using a custom callback allows processing the value before passing it to the target property:
button.bind( 'isEnabled' ).to( command, 'value', value => value === 'heading1' );
It is also possible to bind to the same property in an array of observables. To bind a
button
to multiple commands (alsoObservables
) so that each and every one of them must be enabled for the button to become enabled, use the following code:button.bind( 'isEnabled' ).toMany( [ commandA, commandB, commandC ], 'isEnabled', ( isAEnabled, isBEnabled, isCEnabled ) => isAEnabled && isBEnabled && isCEnabled );
Parameters
bindProperties : Array<'off' | 'on' | 'once' | 'listenTo' | 'stopListening' | 'fire' | 'delegate' | 'stopDelegating' | 'set' | 'bind' | 'unbind' | 'decorate' | 'view' | 'id' | 'destroy' | 'isEnabled' | 'show' | 'hide' | 'isOpen' | 'editor' | 'forceDisabled' | 'clearForceDisabled'>
Observable properties that will be bound to other observable(s).
Returns
MultiBindChain
The bind chain with the
to()
andtoMany()
methods.
-
inherited
bind( bindProperty ) → SingleBindChain<K, Dialog[ K ]>
module:ui/dialog/dialog~Dialog#bind:SINGLE_BIND
Binds observable properties to other objects implementing the
Observable
interface.Read more in the dedicated guide covering the topic of property bindings with some additional examples.
Consider two objects: a
button
and an associatedcommand
(bothObservable
).A simple property binding could be as follows:
button.bind( 'isEnabled' ).to( command, 'isEnabled' );
or even shorter:
button.bind( 'isEnabled' ).to( command );
which works in the following way:
button.isEnabled
instantly equalscommand.isEnabled
,- whenever
command.isEnabled
changes,button.isEnabled
will immediately reflect its value.
Note: To release the binding, use
unbind
.You can also "rename" the property in the binding by specifying the new name in the
to()
chain:button.bind( 'isEnabled' ).to( command, 'isWorking' );
It is possible to bind more than one property at a time to shorten the code:
button.bind( 'isEnabled', 'value' ).to( command );
which corresponds to:
button.bind( 'isEnabled' ).to( command ); button.bind( 'value' ).to( command );
The binding can include more than one observable, combining multiple data sources in a custom callback:
button.bind( 'isEnabled' ).to( command, 'isEnabled', ui, 'isVisible', ( isCommandEnabled, isUIVisible ) => isCommandEnabled && isUIVisible );
Using a custom callback allows processing the value before passing it to the target property:
button.bind( 'isEnabled' ).to( command, 'value', value => value === 'heading1' );
It is also possible to bind to the same property in an array of observables. To bind a
button
to multiple commands (alsoObservables
) so that each and every one of them must be enabled for the button to become enabled, use the following code:button.bind( 'isEnabled' ).toMany( [ commandA, commandB, commandC ], 'isEnabled', ( isAEnabled, isBEnabled, isCEnabled ) => isAEnabled && isBEnabled && isCEnabled );
Type parameters
K
Parameters
bindProperty : K
Observable property that will be bound to other observable(s).
Returns
SingleBindChain<K, Dialog[ K ]>
The bind chain with the
to()
andtoMany()
methods.
-
Clears forced disable previously set through
forceDisabled
. SeeforceDisabled
.Parameters
id : string
Unique identifier, equal to the one passed in
forceDisabled
call.
Returns
void
-
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.
Read more in the dedicated guide covering the topic of decorating methods with some additional examples.
Decorating the method does not change its behavior (it only adds an event), but it allows to modify it later on by listening to the method's event.
For example, to cancel the method execution the event can be stopped:
class Foo extends ObservableMixin() { constructor() { super(); 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: The high priority listener has been used to execute this particular callback before the one which calls the original method (which uses the "normal" priority).
It is also possible to change the returned value:
foo.on( 'method', ( evt ) => { evt.return = 'Foo!'; } ); foo.method(); // -> 'Foo'
Finally, it is possible to access and modify the arguments the method is called with:
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 : 'off' | 'on' | 'once' | 'listenTo' | 'stopListening' | 'fire' | 'delegate' | 'stopDelegating' | 'set' | 'bind' | 'unbind' | 'decorate' | 'view' | 'id' | 'destroy' | 'isEnabled' | 'show' | 'hide' | 'isOpen' | 'editor' | 'forceDisabled' | 'clearForceDisabled'
Name of the method to decorate.
Returns
void
-
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
andemitterC
along withdata
:emitterA.fire( 'eventX', data );
and
eventY
is delegated (fired by)emitterC
along withdata
:emitterA.fire( 'eventY', data );
Parameters
events : Array<string>
Event names that will be delegated to another emitter.
Returns
-
destroy() → void
module:ui/dialog/dialog~Dialog#destroy
Destroys the plugin.
Note: This method is optional. A plugin instance does not need to have it defined.
Returns
void
-
inherited
fire( eventOrInfo, args ) → GetEventInfo<TEvent>[ 'return' ]
module:ui/dialog/dialog~Dialog#fire
Fires an event, executing all callbacks registered for it.
The first parameter passed to callbacks is an
EventInfo
object, followed by the optionalargs
provided in thefire()
method call.Type parameters
Parameters
eventOrInfo : GetNameOrEventInfo<TEvent>
The name of the event or
EventInfo
object if event is delegated.args : TEvent[ 'args' ]
Additional arguments to be passed to the callbacks.
Returns
GetEventInfo<TEvent>[ 'return' ]
By default the method returns
undefined
. However, the return value can be changed by listeners through modification of theevt.return
's property (the event info is the first param of every callback).
-
Disables the plugin.
Plugin may be disabled by multiple features or algorithms (at once). When disabling a plugin, unique id should be passed (e.g. feature name). The same identifier should be used when enabling back the plugin. The plugin becomes enabled only after all features enabled it back.
Disabling and enabling a plugin:
plugin.isEnabled; // -> true plugin.forceDisabled( 'MyFeature' ); plugin.isEnabled; // -> false plugin.clearForceDisabled( 'MyFeature' ); plugin.isEnabled; // -> true
Plugin disabled by multiple features:
plugin.forceDisabled( 'MyFeature' ); plugin.forceDisabled( 'OtherFeature' ); plugin.clearForceDisabled( 'MyFeature' ); plugin.isEnabled; // -> false plugin.clearForceDisabled( 'OtherFeature' ); plugin.isEnabled; // -> true
Multiple disabling with the same identifier is redundant:
plugin.forceDisabled( 'MyFeature' ); plugin.forceDisabled( 'MyFeature' ); plugin.clearForceDisabled( 'MyFeature' ); plugin.isEnabled; // -> true
Note: some plugins or algorithms may have more complex logic when it comes to enabling or disabling certain plugins, so the plugin might be still disabled after
clearForceDisabled
was used.Parameters
id : string
Unique identifier for disabling. Use the same id when enabling back the plugin.
Returns
void
-
hide() → void
module:ui/dialog/dialog~Dialog#hide
Hides the dialog. This method is decorated to enable interacting on the hide event.
See
show
.Returns
void
-
inherited
listenTo( emitter, event, callback, [ options ] ) → void
module:ui/dialog/dialog~Dialog#listenTo:BASE_EMITTER
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.Type parameters
Parameters
emitter : Emitter
The object that fires the event.
event : TEvent[ 'name' ]
The name of the event.
callback : GetCallback<TEvent>
The function to be called on event.
[ options ] : GetCallbackOptions<TEvent>
Additional options.
Returns
void
-
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.
Returns
void
-
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).Type parameters
Parameters
event : TEvent[ 'name' ]
The name of the event.
callback : GetCallback<TEvent>
The function to be called on event.
[ options ] : GetCallbackOptions<TEvent>
Additional options.
Returns
void
-
Registers a callback function to be executed on the next time the event is fired only. This is similar to calling
on
followed byoff
in the callback.Type parameters
Parameters
event : TEvent[ 'name' ]
The name of the event.
callback : GetCallback<TEvent>
The function to be called on event.
[ options ] : GetCallbackOptions<TEvent>
Additional options.
Returns
void
-
Creates and sets the value of an observable properties of this object. Such a property becomes a part of the state and is observable.
It accepts 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 has a property with the given property name. This prevents from mistakenly overriding existing properties and methods, but means thatfoo.set( 'bar', 1 )
may be slightly slower thanfoo.bar = 1
.In TypeScript, those properties should be declared in class using
declare
keyword. In example:public declare myProp1: number; public declare myProp2: string; constructor() { this.set( { 'myProp1: 2, 'myProp2: 'foo' } ); }
Parameters
values : object
An object with
name=>value
pairs.
Returns
void
-
Creates and sets the value of an observable property of this object. Such a property becomes a part of the state and is observable.
This method throws the
observable-set-cannot-override
error if the observable instance already has a property with the given property name. This prevents from mistakenly overriding existing properties and methods, but means thatfoo.set( 'bar', 1 )
may be slightly slower thanfoo.bar = 1
.In TypeScript, those properties should be declared in class using
declare
keyword. In example:public declare myProp: number; constructor() { this.set( 'myProp', 2 ); }
Type parameters
K
Parameters
name : K
The property's name.
value : Dialog[ K ]
The property's value.
Returns
void
-
show( dialogDefinition ) → void
module:ui/dialog/dialog~Dialog#show
Displays a dialog window.
This method requires a
DialogDefinition
that defines the dialog's content, title, icon, action buttons, etc.For example, the following definition will create a dialog with:
- A header consisting of an icon, a title, and a "Close" button (it is added by default).
- A content consisting of a view with a single paragraph.
- A footer consisting of two buttons: "Yes" and "No".
// Create the view that will be used as the dialog's content. const textView = new View( locale ); textView.setTemplate( { tag: 'div', attributes: { style: { padding: 'var(--ck-spacing-large)', whiteSpace: 'initial', width: '100%', maxWidth: '500px' }, tabindex: -1 }, children: [ 'Lorem ipsum dolor sit amet...' ] } ); // Show the dialog. editor.plugins.get( 'Dialog' ).show( { id: 'myDialog', icon: 'myIcon', // This should be an SVG string. title: 'My dialog', content: textView, actionButtons: [ { label: t( 'Yes' ), class: 'ck-button-action', withText: true, onExecute: () => dialog.hide() }, { label: t( 'No' ), withText: true, onExecute: () => dialog.hide() } ] } );
By specifying the
onShow
andonHide
callbacks it is also possible to add callbacks that will be called when the dialog is shown or hidden.For example, the callbacks in the following definition:
- Disable the default behavior of the Esc key.
- Fire a custom event when the dialog gets hidden.
editor.plugins.get( 'Dialog' ).show( { // ... onShow: dialog => { dialog.view.on( 'close', ( evt, data ) => { // Only prevent the event from the "Esc" key - do not affect the other ways of closing the dialog. if ( data.source === 'escKeyPress' ) { evt.stop(); } } ); }, onHide: dialog => { dialog.fire( 'dialogDestroyed' ); } } );
Internally, calling this method:
- Hides the currently visible dialog (if any) calling the
hide
method (fires the hide event). - Fires the show event which allows for adding callbacks that customize the behavior of the dialog.
- Shows the dialog.
Parameters
dialogDefinition : DialogDefinition
Returns
void
-
inherited
stopDelegating( [ event ], [ emitter ] ) → void
module:ui/dialog/dialog~Dialog#stopDelegating
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 ofevent
to all emitters.
Returns
void
-
inherited
stopListening( [ emitter ], [ event ], [ callback ] ) → void
module:ui/dialog/dialog~Dialog#stopListening:BASE_STOP
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 fromemitter
.[ callback ] : Function
(Requires the
event
) The function to be removed from the call list for the givenevent
.
Returns
void
-
Removes the binding created with
bind
.// Removes the binding for the 'a' property. A.unbind( 'a' ); // Removes bindings for all properties. A.unbind();
Parameters
unbindProperties : Array<'off' | 'on' | 'once' | 'listenTo' | 'stopListening' | 'fire' | 'delegate' | 'stopDelegating' | 'set' | 'bind' | 'unbind' | 'decorate' | 'view' | 'id' | 'destroy' | 'isEnabled' | 'show' | 'hide' | 'isOpen' | 'editor' | 'forceDisabled' | 'clearForceDisabled'>
Observable properties to be unbound. All the bindings will be released if no properties are provided.
Returns
void
-
-
Initiates keystroke handler for toggling the focus between the editor and the dialog view.
Returns
void
-
Provides an integration between the root attaching and detaching and positioning of the view.
Returns
void
-
Initiates listeners for the
show
andhide
events emitted by this plugin.We could not simply decorate the
show
andhide
methods to fire events, because they would be fired in the wrong order – first would beshow
and thenhide
(because showing the dialog actually starts with hiding the previously visible one). Hence, we added private methods_show
and_hide
which are called on events in the desired sequence.Returns
void
-
-
Handles creating the
DialogView
instance and making it visible.Parameters
__namedParameters : DialogDefinition
Returns
void
-
Events
-
change:id( eventInfo, name, value, oldValue )
module:ui/dialog/dialog~Dialog#event:change:id
Fired when the
id
property changed value.Parameters
eventInfo : EventInfo
An object containing information about the fired event.
name : string
Name of the changed property (
id
).value : null | string
New value of the
id
property with given key ornull
, if operation should remove property.oldValue : null | string
Old value of the
id
property with given key ornull
, if property was not set before.
-
inherited
change:isEnabled( eventInfo, name, value, oldValue )
module:ui/dialog/dialog~Dialog#event:change:isEnabled
Fired when the
isEnabled
property changed value.Parameters
eventInfo : EventInfo
An object containing information about the fired event.
name : string
Name of the changed property (
isEnabled
).value : boolean
New value of the
isEnabled
property with given key ornull
, if operation should remove property.oldValue : boolean
Old value of the
isEnabled
property with given key ornull
, if property was not set before.
-
change:isOpen( eventInfo, name, value, oldValue )
module:ui/dialog/dialog~Dialog#event:change:isOpen
Fired when the
isOpen
property changed value.Parameters
eventInfo : EventInfo
An object containing information about the fired event.
name : string
Name of the changed property (
isOpen
).value : boolean
New value of the
isOpen
property with given key ornull
, if operation should remove property.oldValue : boolean
Old value of the
isOpen
property with given key ornull
, if property was not set before.
-
inherited
change:{property}( eventInfo, name, value, oldValue )
module:ui/dialog/dialog~Dialog#event:change:{property}
Fired when a property changed value.
observable.set( 'prop', 1 ); observable.on<ObservableChangeEvent<number>>( '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 : TValue
The new property value.
oldValue : TValue
The previous property value.
-
hide( eventInfo )
module:ui/dialog/dialog~Dialog#event:hide
An event fired after
hide
is called. You can use it to customize the behavior of any dialog.// Logs after the "Find and Replace" dialog gets hidden editor.plugins.get( 'Dialog' ).on( 'hide:findAndReplace', () => { console.log( 'The "Find and Replace" dialog was hidden.' ); } );
Parameters
eventInfo : EventInfo
An object containing information about the fired event.
-
set:id( eventInfo, name, value, oldValue )
module:ui/dialog/dialog~Dialog#event:set:id
Fired when the
id
property is going to be set but is not set yet (before thechange
event is fired).Parameters
eventInfo : EventInfo
An object containing information about the fired event.
name : string
Name of the changed property (
id
).value : null | string
New value of the
id
property with given key ornull
, if operation should remove property.oldValue : null | string
Old value of the
id
property with given key ornull
, if property was not set before.
-
inherited
set:isEnabled( eventInfo, name, value, oldValue )
module:ui/dialog/dialog~Dialog#event:set:isEnabled
Fired when the
isEnabled
property is going to be set but is not set yet (before thechange
event is fired).Parameters
eventInfo : EventInfo
An object containing information about the fired event.
name : string
Name of the changed property (
isEnabled
).value : boolean
New value of the
isEnabled
property with given key ornull
, if operation should remove property.oldValue : boolean
Old value of the
isEnabled
property with given key ornull
, if property was not set before.
-
set:isOpen( eventInfo, name, value, oldValue )
module:ui/dialog/dialog~Dialog#event:set:isOpen
Fired when the
isOpen
property is going to be set but is not set yet (before thechange
event is fired).Parameters
eventInfo : EventInfo
An object containing information about the fired event.
name : string
Name of the changed property (
isOpen
).value : boolean
New value of the
isOpen
property with given key ornull
, if operation should remove property.oldValue : boolean
Old value of the
isOpen
property with given key ornull
, if property was not set before.
-
inherited
set:{property}( eventInfo, name, value, oldValue )
module:ui/dialog/dialog~Dialog#event:set:{property}
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<ObservableSetEvent<number>>( '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<ObservableChangeEvent<number>>( '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: The 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 : TValue
The new property value.
oldValue : TValue
The previous property value.
-
show( eventInfo, dialogDefinition )
module:ui/dialog/dialog~Dialog#event:show
An event fired after
show
is called. You can use it to customize the behavior of any dialog.import { DialogViewPosition } from 'ckeditor5/src/ui.js'; // ... // Changes the position of the "Find and Replace" dialog. editor.plugins.get( 'Dialog' ).on( 'show:findAndReplace', ( evt, data ) => { Object.assign( data, { position: DialogViewPosition.EDITOR_BOTTOM_CENTER } ); }, { priority: 'high' } );
Parameters
eventInfo : EventInfo
An object containing information about the fired event.
dialogDefinition : DialogDefinition
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