ModelTextProxy
ModelTextProxy represents a part of text node.
Since positions can be placed between characters of a text node, ranges may contain only parts of text nodes. When getting items contained in such range, we need to represent a part of that text node, since returning the whole text node would be incorrect. ModelTextProxy solves this issue.
ModelTextProxy has an API similar to Text and allows to do most of the common tasks performed on model nodes.
Note: Some ModelTextProxy instances may represent whole text node, not just a part of it. See isPartial.
Note: ModelTextProxy is not an instance of node. Keep this in mind when using it as a parameter of methods.
Note: ModelTextProxy is a readonly interface. If you want to perform changes on model data represented by a ModelTextProxy use model writer API.
Note: ModelTextProxy instances are created on the fly, basing on the current state of model. Because of this, it is highly unrecommended to store references to ModelTextProxy instances. ModelTextProxy instances are not refreshed when model changes, so they might get invalidated. Instead, consider creating live position.
ModelTextProxy instances are created by model tree walker. You should not need to create an instance of this class by your own.
Properties
data : stringreadonlymodule:engine/model/textproxy~ModelTextProxy#dataText data represented by this text proxy.
endOffset : null | numberreadonlymodule:engine/model/textproxy~ModelTextProxy#endOffsetOffset at which this text proxy ends in it's parent.
isPartial : booleanreadonlymodule:engine/model/textproxy~ModelTextProxy#isPartialFlag indicating whether
ModelTextProxyinstance covers only part of the original text node (true) or the whole text node (false).This is
falsewhen text proxy starts at the very beginning of textNode (offsetInText equals0) and text proxy sizes is equal to text node size.offsetInText : numberreadonlymodule:engine/model/textproxy~ModelTextProxy#offsetInTextOffset in text node from which the text proxy starts.
offsetSize : numberreadonlymodule:engine/model/textproxy~ModelTextProxy#offsetSizeOffset size of this text proxy. Equal to the number of characters represented by the text proxy.
parent : null | ModelElement | ModelDocumentFragmentreadonlymodule:engine/model/textproxy~ModelTextProxy#parentParent of this text proxy, which is same as parent of text node represented by this text proxy.
root : ModelNode | ModelDocumentFragmentreadonlymodule:engine/model/textproxy~ModelTextProxy#rootRoot of this text proxy, which is same as root of text node represented by this text proxy.
startOffset : null | numberreadonlymodule:engine/model/textproxy~ModelTextProxy#startOffsetOffset at which this text proxy starts in it's parent.
module:engine/model/textproxy~ModelTextProxy#textNodeText node which part is represented by this text proxy.
Methods
constructor( textNode, offsetInText, length )internalmodule:engine/model/textproxy~ModelTextProxy#constructorCreates a text proxy.
Parameters
getAncestors( options = { [options.includeSelf], [options.parentFirst] } ) → Array<ModelElement | ModelDocumentFragment | ModelTextProxy>module:engine/model/textproxy~ModelTextProxy#getAncestorsReturns ancestors array of this text proxy.
Parameters
options : objectOptions object.
Properties[ options.includeSelf ] : booleanWhen set to
truethis text proxy will be also included in parent's array.[ options.parentFirst ] : booleanWhen set to
true, array will be sorted from text proxy parent to root element, otherwise root element will be the first item in the array.
Defaults to
{}
Returns
Array<ModelElement | ModelDocumentFragment | ModelTextProxy>Array with ancestors.
getAttribute( key ) → unknownmodule:engine/model/textproxy~ModelTextProxy#getAttributeGets an attribute value for given key or
undefinedif that attribute is not set on text proxy.Parameters
key : stringKey of attribute to look for.
Returns
unknownAttribute value or
undefined.
getAttributeKeys() → IterableIterator<string>module:engine/model/textproxy~ModelTextProxy#getAttributeKeysReturns iterator that iterates over this node's attribute keys.
Returns
IterableIterator<string>
getAttributes() → IterableIterator<tuple>module:engine/model/textproxy~ModelTextProxy#getAttributesReturns iterator that iterates over this node's attributes. Attributes are returned as arrays containing two items. First one is attribute key and second is attribute value.
This format is accepted by native
Mapobject and also can be passed inNodeconstructor.Returns
IterableIterator<tuple>
getPath() → Array<number>module:engine/model/textproxy~ModelTextProxy#getPathGets path to this text proxy.
Returns
Array<number>
Related:
hasAttribute( key ) → booleanmodule:engine/model/textproxy~ModelTextProxy#hasAttributeChecks if this text proxy has an attribute for given key.
Parameters
key : stringKey of attribute to check.
Returns
booleantrueif attribute with given key is set on text proxy,falseotherwise.
is( type ) → this is ModelElement | ModelRootElementinheritedmodule:engine/model/textproxy~ModelTextProxy#is:ELEMENTChecks whether the object is of type
ModelElementor its subclass.element.is( 'element' ); // -> true element.is( 'node' ); // -> true element.is( 'model:element' ); // -> true element.is( 'model:node' ); // -> true element.is( 'view:element' ); // -> false element.is( 'documentSelection' ); // -> falseCopy codeAssuming that the object being checked is an element, you can also check its name:
element.is( 'element', 'imageBlock' ); // -> true if this is an <imageBlock> element text.is( 'element', 'imageBlock' ); -> falseCopy codeParameters
type : 'element' | 'model:element'
Returns
this is ModelElement | ModelRootElement
is( type ) → this is ModelRootElementinheritedmodule:engine/model/textproxy~ModelTextProxy#is:ROOT_ELEMENTChecks whether the object is of type
ModelRootElement.rootElement.is( 'rootElement' ); // -> true rootElement.is( 'element' ); // -> true rootElement.is( 'node' ); // -> true rootElement.is( 'model:rootElement' ); // -> true rootElement.is( 'model:element' ); // -> true rootElement.is( 'model:node' ); // -> true rootElement.is( 'view:element' ); // -> false rootElement.is( 'documentFragment' ); // -> falseCopy codeAssuming that the object being checked is an element, you can also check its name:
rootElement.is( 'rootElement', '$root' ); // -> same as aboveCopy codeParameters
type : 'rootElement' | 'model:rootElement'
Returns
this is ModelRootElement
is( type ) → this is ModelLivePositioninheritedmodule:engine/model/textproxy~ModelTextProxy#is:LIVE_POSITIONChecks whether the object is of type
ModelLivePosition.livePosition.is( 'position' ); // -> true livePosition.is( 'model:position' ); // -> true livePosition.is( 'liveposition' ); // -> true livePosition.is( 'model:livePosition' ); // -> true livePosition.is( 'view:position' ); // -> false livePosition.is( 'documentSelection' ); // -> falseCopy codeParameters
type : 'livePosition' | 'model:livePosition'
Returns
this is ModelLivePosition
is( type ) → this is ModelRange | ModelLiveRangeinheritedmodule:engine/model/textproxy~ModelTextProxy#is:RANGEChecks whether the object is of type
ModelRangeor its subclass.range.is( 'range' ); // -> true range.is( 'model:range' ); // -> true range.is( 'view:range' ); // -> false range.is( 'documentSelection' ); // -> falseCopy codeParameters
type : 'range' | 'model:range'
Returns
this is ModelRange | ModelLiveRange
is( type ) → this is ModelPosition | ModelLivePositioninheritedmodule:engine/model/textproxy~ModelTextProxy#is:POSITIONChecks whether the object is of type
ModelPositionor its subclass.position.is( 'position' ); // -> true position.is( 'model:position' ); // -> true position.is( 'view:position' ); // -> false position.is( 'documentSelection' ); // -> falseCopy codeParameters
type : 'position' | 'model:position'
Returns
this is ModelPosition | ModelLivePosition
module:engine/model/textproxy~ModelTextProxy#is:TEXTChecks whether the object is of type
ModelText.text.is( '$text' ); // -> true text.is( 'node' ); // -> true text.is( 'model:$text' ); // -> true text.is( 'model:node' ); // -> true text.is( 'view:$text' ); // -> false text.is( 'documentSelection' ); // -> falseCopy codeNote: Until version 20.0.0 this method wasn't accepting
'$text'type. The legacy'text'type is still accepted for backward compatibility.Parameters
type : '$text' | 'model:$text'
Returns
this is ModelText
is( type ) → this is ModelLiveRangeinheritedmodule:engine/model/textproxy~ModelTextProxy#is:LIVE_RANGEChecks whether the object is of type
ModelLiveRange.liveRange.is( 'range' ); // -> true liveRange.is( 'model:range' ); // -> true liveRange.is( 'liveRange' ); // -> true liveRange.is( 'model:liveRange' ); // -> true liveRange.is( 'view:range' ); // -> false liveRange.is( 'documentSelection' ); // -> falseCopy codeParameters
type : 'liveRange' | 'model:liveRange'
Returns
this is ModelLiveRange
is( type ) → this is ModelSelection | ModelDocumentSelectioninheritedmodule:engine/model/textproxy~ModelTextProxy#is:SELECTIONChecks whether the object is of type
ModelSelectionorModelDocumentSelection.selection.is( 'selection' ); // -> true selection.is( 'model:selection' ); // -> true selection.is( 'view:selection' ); // -> false selection.is( 'range' ); // -> falseCopy codeParameters
type : 'selection' | 'model:selection'
Returns
this is ModelSelection | ModelDocumentSelection
module:engine/model/textproxy~ModelTextProxy#is:MARKERis( type, name ) → booleaninheritedmodule:engine/model/textproxy~ModelTextProxy#is:ELEMENT_NAMEChecks whether the object is of type
ModelElementor its subclass and has the specifiedname.element.is( 'element', 'imageBlock' ); // -> true if this is an <imageBlock> element text.is( 'element', 'imageBlock' ); -> falseCopy codeType parameters
N : extends string
Parameters
type : 'element' | 'model:element'name : N
Returns
boolean
is( type, name ) → booleaninheritedmodule:engine/model/textproxy~ModelTextProxy#is:ROOT_ELEMENT_NAMEChecks whether the object is of type
ModelRootElementand has the specifiedname.rootElement.is( 'rootElement', '$root' );Copy codeType parameters
N : extends string
Parameters
type : 'rootElement' | 'model:rootElement'name : N
Returns
boolean
is( type ) → this is ModelTextProxyinheritedmodule:engine/model/textproxy~ModelTextProxy#is:TEXT_PROXYChecks whether the object is of type
ModelTextProxy.textProxy.is( '$textProxy' ); // -> true textProxy.is( 'model:$textProxy' ); // -> true textProxy.is( 'view:$textProxy' ); // -> false textProxy.is( 'range' ); // -> falseCopy codeNote: Until version 20.0.0 this method wasn't accepting
'$textProxy'type. The legacy'textProxt'type is still accepted for backward compatibility.Parameters
type : '$textProxy' | 'model:$textProxy'
Returns
this is ModelTextProxy
is( type ) → this is ModelDocumentSelectioninheritedmodule:engine/model/textproxy~ModelTextProxy#is:DOCUMENT_SELECTIONChecks whether the object is of type
ModelDocumentSelection.selection.is( 'selection' ); // -> true selection.is( 'documentSelection' ); // -> true selection.is( 'model:selection' ); // -> true selection.is( 'model:documentSelection' ); // -> true selection.is( 'view:selection' ); // -> false selection.is( 'element' ); // -> false selection.is( 'node' ); // -> falseCopy codeParameters
type : 'documentSelection' | 'model:documentSelection'
Returns
this is ModelDocumentSelection
is( type ) → this is ModelDocumentFragmentinheritedmodule:engine/model/textproxy~ModelTextProxy#is:DOCUMENT_FRAGMENTChecks whether the object is of type
ModelDocumentFragment.docFrag.is( 'documentFragment' ); // -> true docFrag.is( 'model:documentFragment' ); // -> true docFrag.is( 'view:documentFragment' ); // -> false docFrag.is( 'element' ); // -> false docFrag.is( 'node' ); // -> falseCopy codeParameters
type : 'documentFragment' | 'model:documentFragment'
Returns
this is ModelDocumentFragment
is( type ) → this is ModelNode | ModelText | ModelElement | ModelRootElementinheritedmodule:engine/model/textproxy~ModelTextProxy#is:NODEChecks whether the object is of type
ModelNodeor its subclass.This method is useful when processing model objects that are of unknown type. For example, a function may return a
ModelDocumentFragmentor aModelNodethat 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 fragmentCopy codeSince this method is also available on a range of view 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:modelElement.is( 'model:element' ); // -> true modelElement.is( 'view:element' ); // -> falseCopy codeBy using this method it is also possible to check a name of an element:
imageElement.is( 'element', 'imageBlock' ); // -> true imageElement.is( 'element', 'imageBlock' ); // -> same as above imageElement.is( 'model:element', 'imageBlock' ); // -> same as above, but more preciseCopy codeParameters
type : 'node' | 'model:node'
Returns
this is ModelNode | ModelText | ModelElement | ModelRootElement