Text (engine/view)
@ckeditor/ckeditor5-engine/src/view/text
Tree view text node.
The constructor of this class should not be used directly. To create a new text node instance
use the DowncastWriter#createText()
method when working on data downcasted from the model or the
UpcastWriter#createText()
method when working on non-semantic views.
Filtering
Properties
-
_data : stringmodule:engine/view/text~Text#_dataThe
_dataproperty is controlled by a getter and a setter.The getter is required when using the addition assignment operator on protected property:
const foo = downcastWriter.createText( 'foo' ); const bar = downcastWriter.createText( 'bar' ); foo._data += bar.data; // executes: `foo._data = foo._data + bar.data` console.log( foo.data ); // prints: 'foobar'If the protected getter didn't exist,
foo._datawill returnundefinedand result of the merge will be invalid.The setter sets data and fires the change event.
Parameters
data : string
-
The text content.
-
The document instance to which this node belongs.
-
Index of the node in the parent element or null if the node has no parent.
Accessing this property throws an error if this node's parent element does not contain it. This means that view tree got broken.
-
Node's next sibling, or
nullif it is the last child. -
Parent element. Null by default. Set by
_insertChild. -
Node's previous sibling, or
nullif it is the first child. -
Top-most ancestor of the node. If the node has no parent it is the root itself.
-
Methods
-
Creates a tree view text node.
Parameters
document : DocumentThe document instance to which this text node belongs.
data : stringThe text's data.
Related:
-
Delegates selected events to another
Emitter. For instance:emitterA.delegate( 'eventX' ).to( emitterB ); emitterA.delegate( 'eventX', 'eventY' ).to( emitterC );then
eventXis delegated (fired by)emitterBandemitterCalong withdata:emitterA.fire( 'eventX', data );and
eventYis delegated (fired by)emitterCalong withdata:emitterA.fire( 'eventY', data );Parameters
events : Array<string>Event names that will be delegated to another emitter.
Returns
-
inherited
fire( eventOrInfo, args ) → GetEventInfo<TEvent>[ 'return' ]module:engine/view/text~Text#fireFires an event, executing all callbacks registered for it.
The first parameter passed to callbacks is an
EventInfoobject, followed by the optionalargsprovided in thefire()method call.Type parameters
Parameters
eventOrInfo : GetNameOrEventInfo<TEvent>The name of the event or
EventInfoobject 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).
-
inherited
getAncestors( options = { [options.includeSelf], [options.parentFirst] } ) → Array<Node | DocumentFragment>module:engine/view/text~Text#getAncestorsReturns ancestors array of this node.
Parameters
options : objectOptions object.
Properties[ options.includeSelf ] : booleanWhen set to
truethis node will be also included in parent's array.[ options.parentFirst ] : booleanWhen set to
true, array will be sorted from node's parent to root element, otherwise root element will be the first item in the array.
Defaults to
{}
Returns
Array<Node | DocumentFragment>Array with ancestors.
-
inherited
getCommonAncestor( node, options = { [options.includeSelf] } ) → null | Element | DocumentFragmentmodule:engine/view/text~Text#getCommonAncestorReturns a
ElementorDocumentFragmentwhich is a common ancestor of both nodes.Parameters
node : NodeThe second node.
options : objectOptions object.
Properties[ options.includeSelf ] : booleanWhen set to
trueboth nodes will be considered "ancestors" too. Which means that if e.g. node A is inside B, then their common ancestor will be B.
Defaults to
{}
Returns
null | Element | DocumentFragment
-
Gets a path to the node. The path is an array containing indices of consecutive ancestors of this node, beginning from root, down to this node's index.
const abc = downcastWriter.createText( 'abc' ); const foo = downcastWriter.createText( 'foo' ); const h1 = downcastWriter.createElement( 'h1', null, downcastWriter.createText( 'header' ) ); const p = downcastWriter.createElement( 'p', null, [ abc, foo ] ); const div = downcastWriter.createElement( 'div', null, [ h1, p ] ); foo.getPath(); // Returns [ 1, 3 ]. `foo` is in `p` which is in `div`. `p` starts at offset 1, while `foo` at 3. h1.getPath(); // Returns [ 0 ]. div.getPath(); // Returns [].Returns
Array<number>The path.
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inherited
is( type ) → this is Element | AttributeElement | ContainerElement | EditableElement | EmptyElement | RawElement | RootEditableElement | UIElementmodule:engine/view/text~Text#is:ELEMENTChecks whether this object is of type
Elementor its subclass.element.is( 'element' ); // -> true element.is( 'node' ); // -> true element.is( 'view:element' ); // -> true element.is( 'view:node' ); // -> true element.is( 'model:element' ); // -> false element.is( 'documentSelection' ); // -> falseAssuming that the object being checked is an element, you can also check its name:
element.is( 'element', 'img' ); // -> true if this is an <img> element text.is( 'element', 'img' ); -> falseParameters
type : 'element' | 'view:element'
Returns
this is Element | AttributeElement | ContainerElement | EditableElement | EmptyElement | RawElement | RootEditableElement | UIElement
-
Checks whether this object is of type
AttributeElement.attributeElement.is( 'attributeElement' ); // -> true attributeElement.is( 'element' ); // -> true attributeElement.is( 'node' ); // -> true attributeElement.is( 'view:attributeElement' ); // -> true attributeElement.is( 'view:element' ); // -> true attributeElement.is( 'view:node' ); // -> true attributeElement.is( 'model:element' ); // -> false attributeElement.is( 'documentFragment' ); // -> falseAssuming that the object being checked is an attribute element, you can also check its name:
attributeElement.is( 'element', 'b' ); // -> true if this is a bold element attributeElement.is( 'attributeElement', 'b' ); // -> same as above text.is( 'element', 'b' ); -> falseParameters
type : 'attributeElement' | 'view:attributeElement'
Returns
this is AttributeElement
-
inherited
is( type ) → this is ContainerElement | EditableElement | RootEditableElementmodule:engine/view/text~Text#is:CONTAINER_ELEMENTChecks whether this object is of type
ContainerElementor its subclass.containerElement.is( 'containerElement' ); // -> true containerElement.is( 'element' ); // -> true containerElement.is( 'node' ); // -> true containerElement.is( 'view:containerElement' ); // -> true containerElement.is( 'view:element' ); // -> true containerElement.is( 'view:node' ); // -> true containerElement.is( 'model:element' ); // -> false containerElement.is( 'documentFragment' ); // -> falseAssuming that the object being checked is a container element, you can also check its name:
containerElement.is( 'element', 'div' ); // -> true if this is a div container element containerElement.is( 'contaienrElement', 'div' ); // -> same as above text.is( 'element', 'div' ); -> falseParameters
type : 'containerElement' | 'view:containerElement'
Returns
this is ContainerElement | EditableElement | RootEditableElement
-
Checks whether this object is of type
RootEditableElement.rootEditableElement.is( 'rootElement' ); // -> true rootEditableElement.is( 'editableElement' ); // -> true rootEditableElement.is( 'element' ); // -> true rootEditableElement.is( 'node' ); // -> true rootEditableElement.is( 'view:editableElement' ); // -> true rootEditableElement.is( 'view:element' ); // -> true rootEditableElement.is( 'view:node' ); // -> true rootEditableElement.is( 'model:element' ); // -> false rootEditableElement.is( 'documentFragment' ); // -> falseAssuming that the object being checked is a root editable element, you can also check its name:
rootEditableElement.is( 'element', 'div' ); // -> true if this is a div root editable element rootEditableElement.is( 'rootElement', 'div' ); // -> same as above text.is( 'element', 'div' ); -> falseParameters
type : 'rootElement' | 'view:rootElement'
Returns
this is RootEditableElement
-
Checks whether this object is of type
UIElement.uiElement.is( 'uiElement' ); // -> true uiElement.is( 'element' ); // -> true uiElement.is( 'node' ); // -> true uiElement.is( 'view:uiElement' ); // -> true uiElement.is( 'view:element' ); // -> true uiElement.is( 'view:node' ); // -> true uiElement.is( 'model:element' ); // -> false uiElement.is( 'documentFragment' ); // -> falseAssuming that the object being checked is an ui element, you can also check its name:
uiElement.is( 'element', 'span' ); // -> true if this is a span ui element uiElement.is( 'uiElement', 'span' ); // -> same as above text.is( 'element', 'span' ); -> falseParameters
type : 'uiElement' | 'view:uiElement'
Returns
this is UIElement
-
Checks whether this object is of type
RawElement.rawElement.is( 'rawElement' ); // -> true rawElement.is( 'element' ); // -> true rawElement.is( 'node' ); // -> true rawElement.is( 'view:rawElement' ); // -> true rawElement.is( 'view:element' ); // -> true rawElement.is( 'view:node' ); // -> true rawElement.is( 'model:element' ); // -> false rawElement.is( 'documentFragment' ); // -> falseAssuming that the object being checked is a raw element, you can also check its name:
rawElement.is( 'img' ); // -> true if this is an img element rawElement.is( 'rawElement', 'img' ); // -> same as above text.is( 'img' ); -> falseParameters
type : 'rawElement' | 'view:rawElement'
Returns
this is RawElement
-
Checks whether this object is of type
EmptyElement.emptyElement.is( 'emptyElement' ); // -> true emptyElement.is( 'element' ); // -> true emptyElement.is( 'node' ); // -> true emptyElement.is( 'view:emptyElement' ); // -> true emptyElement.is( 'view:element' ); // -> true emptyElement.is( 'view:node' ); // -> true emptyElement.is( 'model:element' ); // -> false emptyElement.is( 'documentFragment' ); // -> falseAssuming that the object being checked is an empty element, you can also check its name:
emptyElement.is( 'element', 'img' ); // -> true if this is a img element emptyElement.is( 'emptyElement', 'img' ); // -> same as above text.is( 'element', 'img' ); -> falseParameters
type : 'emptyElement' | 'view:emptyElement'
Returns
this is EmptyElement
-
inherited
is( type ) → this is EditableElement | RootEditableElementmodule:engine/view/text~Text#is:EDITABLE_ELEMENTChecks whether this object is of type
EditableElementor its subclass.editableElement.is( 'editableElement' ); // -> true editableElement.is( 'element' ); // -> true editableElement.is( 'node' ); // -> true editableElement.is( 'view:editableElement' ); // -> true editableElement.is( 'view:element' ); // -> true editableElement.is( 'view:node' ); // -> true editableElement.is( 'model:element' ); // -> false editableElement.is( 'documentFragment' ); // -> falseAssuming that the object being checked is an editbale element, you can also check its name:
editableElement.is( 'element', 'div' ); // -> true if this is a div element editableElement.is( 'editableElement', 'div' ); // -> same as above text.is( 'element', 'div' ); -> falseParameters
type : 'editableElement' | 'view:editableElement'
Returns
this is EditableElement | RootEditableElement
-
Checks whether this object is of type
Text.text.is( '$text' ); // -> true text.is( 'node' ); // -> true text.is( 'view:$text' ); // -> true text.is( 'view:node' ); // -> true text.is( 'model:$text' ); // -> false text.is( 'element' ); // -> false text.is( 'range' ); // -> falseParameters
type : '$text' | 'view:$text'
Returns
this is Text
-
Checks whether this object is of type
TextProxy.textProxy.is( '$textProxy' ); // -> true textProxy.is( 'view:$textProxy' ); // -> true textProxy.is( 'model:$textProxy' ); // -> false textProxy.is( 'element' ); // -> false textProxy.is( 'range' ); // -> falseNote: Until version 20.0.0 this method wasn't accepting
'$textProxy'type. The legacy'textProxy'type is still accepted for backward compatibility.Parameters
type : '$textProxy' | 'view:$textProxy'
Returns
this is TextProxy
-
Checks whether this object is of type
DocumentSelection.`docSelection.is( 'selection' ); // -> true docSelection.is( 'documentSelection' ); // -> true docSelection.is( 'view:selection' ); // -> true docSelection.is( 'view:documentSelection' ); // -> true docSelection.is( 'model:documentSelection' ); // -> false docSelection.is( 'element' ); // -> false docSelection.is( 'node' ); // -> falseParameters
type : 'documentSelection' | 'view:documentSelection'
Returns
this is DocumentSelection
-
Checks whether the object is of type
AttributeElementand has the specifiedname.Type parameters
N : extends string
Parameters
type : 'attributeElement' | 'view:attributeElement'name : N
Returns
boolean
-
Checks whether the object is of type
EditableElementor its subclass and has the specifiedname.Type parameters
N : extends string
Parameters
type : 'editableElement' | 'view:editableElement'name : N
Returns
boolean
-
Checks whether the object is of type
RawElementand has the specifiedname.Type parameters
N : extends string
Parameters
type : 'rawElement' | 'view:rawElement'name : N
Returns
boolean
-
Checks whether the object is of type
UIElementand has the specifiedname.Type parameters
N : extends string
Parameters
type : 'uiElement' | 'view:uiElement'name : N
Returns
boolean
-
Checks whether the object is of type
RootEditableElementand has the specifiedname.Type parameters
N : extends string
Parameters
type : 'rootElement' | 'view:rootElement'name : N
Returns
boolean
-
Checks whether the object is of type
EmptyElementhas the specifiedname.Type parameters
N : extends string
Parameters
type : 'emptyElement' | 'view:emptyElement'name : N
Returns
boolean
-
Checks whether the object is of type
ContainerElementor its subclass and has the specifiedname.Type parameters
N : extends string
Parameters
type : 'containerElement' | 'view:containerElement'name : N
Returns
boolean
-
Checks whether the object is of type
Elementor its subclass and has the specifiedname.Type parameters
N : extends string
Parameters
type : 'element' | 'view:element'name : N
Returns
boolean
-
inherited
is( type ) → this is Selection | DocumentSelectionmodule:engine/view/text~Text#is:SELECTIONChecks whether this object is of type
SelectionorDocumentSelection.selection.is( 'selection' ); // -> true selection.is( 'view:selection' ); // -> true selection.is( 'model:selection' ); // -> false selection.is( 'element' ); // -> false selection.is( 'range' ); // -> falseParameters
type : 'selection' | 'view:selection'
Returns
this is Selection | DocumentSelection
-
Checks whether this object is of type
Position.position.is( 'position' ); // -> true position.is( 'view:position' ); // -> true position.is( 'model:position' ); // -> false position.is( 'element' ); // -> false position.is( 'range' ); // -> falseParameters
type : 'position' | 'view:position'
Returns
this is Position
-
hecks whether this object is of type
DocumentFragment.docFrag.is( 'documentFragment' ); // -> true docFrag.is( 'view:documentFragment' ); // -> true docFrag.is( 'model:documentFragment' ); // -> false docFrag.is( 'element' ); // -> false docFrag.is( 'node' ); // -> falseParameters
type : 'documentFragment' | 'view:documentFragment'
Returns
this is DocumentFragment
-
inherited
is( type ) → this is Text | Node | Element | AttributeElement | ContainerElement | EditableElement | EmptyElement | RawElement | RootEditableElement | UIElementmodule:engine/view/text~Text#is:NODEChecks whether this object is of type
Nodeor its subclass.This method is useful when processing view objects that are of unknown type. For example, a function may return a
DocumentFragmentor aNodethat can be either a text node or an element. This method can be used to check what kind of object is returned.someObject.is( 'element' ); // -> true if this is an element someObject.is( 'node' ); // -> true if this is a node (a text node or an element) someObject.is( 'documentFragment' ); // -> true if this is a document fragmentSince this method is also available on a range of model objects, you can prefix the type of the object with
model:orview:to check, for example, if this is the model's or view's element:viewElement.is( 'view:element' ); // -> true viewElement.is( 'model:element' ); // -> falseBy using this method it is also possible to check a name of an element:
imgElement.is( 'element', 'img' ); // -> true imgElement.is( 'view:element', 'img' ); // -> same as above, but more preciseParameters
type : 'node' | 'view:node'
Returns
this is Text | Node | Element | AttributeElement | ContainerElement | EditableElement | EmptyElement | RawElement | RootEditableElement | UIElement
-
Returns whether this node is after given node.
falseis returned if nodes are in different trees (for example, in differentDocumentFragments).Parameters
node : NodeNode to compare with.
Returns
boolean
-
Returns true if the node is in a tree rooted in the document (is a descendant of one of its roots).
Returns
boolean
-
Returns whether this node is before given node.
falseis returned if nodes are in different trees (for example, in differentDocumentFragments).Parameters
node : NodeNode to compare with.
Returns
boolean
-
isSimilar( otherNode ) → booleanmodule:engine/view/text~Text#isSimilarChecks if this text node is similar to other text node. Both nodes should have the same data to be considered as similar.
Parameters
otherNode : NodeNode to check if it is same as this node.
Returns
boolean
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inherited
listenTo( emitter, event, callback, [ options ] ) → voidmodule:engine/view/text~Text#listenTo:BASE_EMITTERRegisters 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
firemethod.Type parameters
Parameters
emitter : EmitterThe 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 : stringThe name of the event.
callback : FunctionThe 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
onfollowed byoffin 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
-
inherited
stopDelegating( [ event ], [ emitter ] ) → voidmodule:engine/view/text~Text#stopDelegatingStops 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 ] : stringThe 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 ofeventto all emitters.
Returns
void
-
inherited
stopListening( [ emitter ], [ event ], [ callback ] ) → voidmodule:engine/view/text~Text#stopListening:BASE_STOPStops 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 ] : EmitterThe 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
-
Custom toJSON method to solve child-parent circular dependencies.
Returns
unknownClone of this object with the parent property removed.
-
-
internal inherited
_fireChange( type, node, [ data ] = { data.index } ) → voidmodule:engine/view/text~Text#_fireChangeParameters
type : ChangeTypeType of the change.
node : NodeChanged node.
[ data ] : objectAdditional data.
Propertiesdata.index : number
Returns
void
Fires
-
Events
-
Fired when list of elements children, attributes or text changes.
Change event is bubbled – it is fired on all ancestors.
All change events as the first parameter receive the node that has changed (the node for which children, attributes or text changed).
If
change:childrenevent is fired, there is an additional second parameter, which is an object with additional data related to change.Parameters
-
inherited
change:attributes( eventInfo, changedNode, [ data ] )module:engine/view/text~Text#event:change:attributesFired when list of elements children, attributes or text changes.
Change event is bubbled – it is fired on all ancestors.
All change events as the first parameter receive the node that has changed (the node for which children, attributes or text changed).
If
change:childrenevent is fired, there is an additional second parameter, which is an object with additional data related to change.Parameters
-
inherited
change:children( eventInfo, changedNode, [ data ] )module:engine/view/text~Text#event:change:childrenFired when list of elements children, attributes or text changes.
Change event is bubbled – it is fired on all ancestors.
All change events as the first parameter receive the node that has changed (the node for which children, attributes or text changed).
If
change:childrenevent is fired, there is an additional second parameter, which is an object with additional data related to change.Parameters
-
inherited
change:text( eventInfo, changedNode, [ data ] )module:engine/view/text~Text#event:change:textFired when list of elements children, attributes or text changes.
Change event is bubbled – it is fired on all ancestors.
All change events as the first parameter receive the node that has changed (the node for which children, attributes or text changed).
If
change:childrenevent is fired, there is an additional second parameter, which is an object with additional data related to change.Parameters
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