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 : string
readonlymodule:engine/model/textproxy~ModelTextProxy#data
Text data represented by this text proxy.
-
endOffset : null | number
readonlymodule:engine/model/textproxy~ModelTextProxy#endOffset
Offset at which this text proxy ends in it's parent.
-
isPartial : boolean
readonlymodule:engine/model/textproxy~ModelTextProxy#isPartial
Flag indicating whether
ModelTextProxy
instance covers only part of the original text node (true
) or the whole text node (false
).This is
false
when text proxy starts at the very beginning of textNode (offsetInText equals0
) and text proxy sizes is equal to text node size. -
offsetInText : number
readonlymodule:engine/model/textproxy~ModelTextProxy#offsetInText
Offset in text node from which the text proxy starts.
-
offsetSize : number
readonlymodule:engine/model/textproxy~ModelTextProxy#offsetSize
Offset size of this text proxy. Equal to the number of characters represented by the text proxy.
-
parent : null | ModelElement | ModelDocumentFragment
readonlymodule:engine/model/textproxy~ModelTextProxy#parent
Parent of this text proxy, which is same as parent of text node represented by this text proxy.
-
root : ModelNode | ModelDocumentFragment
readonlymodule:engine/model/textproxy~ModelTextProxy#root
Root of this text proxy, which is same as root of text node represented by this text proxy.
-
startOffset : null | number
readonlymodule:engine/model/textproxy~ModelTextProxy#startOffset
Offset at which this text proxy starts in it's parent.
-
module:engine/model/textproxy~ModelTextProxy#textNode
Text node which part is represented by this text proxy.
Methods
-
constructor( textNode, offsetInText, length )
internalmodule:engine/model/textproxy~ModelTextProxy#constructor
Creates a text proxy.
Parameters
-
getAncestors( options = { [options.includeSelf], [options.parentFirst] } ) → Array<ModelElement | ModelDocumentFragment | ModelTextProxy>
module:engine/model/textproxy~ModelTextProxy#getAncestors
Returns ancestors array of this text proxy.
Parameters
options : object
Options object.
Properties[ options.includeSelf ] : boolean
When set to
true
this text proxy will be also included in parent's array.[ options.parentFirst ] : boolean
When 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 ) → unknown
module:engine/model/textproxy~ModelTextProxy#getAttribute
Gets an attribute value for given key or
undefined
if that attribute is not set on text proxy.Parameters
key : string
Key of attribute to look for.
Returns
unknown
Attribute value or
undefined
.
-
getAttributeKeys() → IterableIterator<string>
module:engine/model/textproxy~ModelTextProxy#getAttributeKeys
Returns iterator that iterates over this node's attribute keys.
Returns
IterableIterator<string>
-
getAttributes() → IterableIterator<tuple>
module:engine/model/textproxy~ModelTextProxy#getAttributes
Returns 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
Map
object and also can be passed inNode
constructor.Returns
IterableIterator<tuple>
-
getPath() → Array<number>
module:engine/model/textproxy~ModelTextProxy#getPath
Gets path to this text proxy.
Returns
Array<number>
Related:
-
hasAttribute( key ) → boolean
module:engine/model/textproxy~ModelTextProxy#hasAttribute
Checks if this text proxy has an attribute for given key.
Parameters
key : string
Key of attribute to check.
Returns
boolean
true
if attribute with given key is set on text proxy,false
otherwise.
-
is( type ) → this is ModelElement | ModelRootElement
inheritedmodule:engine/model/textproxy~ModelTextProxy#is:ELEMENT
Checks whether the object is of type
ModelElement
or 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' ); // -> false
Assuming 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' ); -> false
Parameters
type : 'element' | 'model:element'
Returns
this is ModelElement | ModelRootElement
-
is( type ) → this is ModelRootElement
inheritedmodule:engine/model/textproxy~ModelTextProxy#is:ROOT_ELEMENT
Checks 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' ); // -> false
Assuming that the object being checked is an element, you can also check its name:
rootElement.is( 'rootElement', '$root' ); // -> same as above
Parameters
type : 'rootElement' | 'model:rootElement'
Returns
this is ModelRootElement
-
is( type ) → this is ModelLivePosition
inheritedmodule:engine/model/textproxy~ModelTextProxy#is:LIVE_POSITION
Checks whether the object is of type
ModelLivePosition
.livePosition.is( 'position' ); // -> true livePosition.is( 'model:position' ); // -> true livePosition.is( 'liveposition' ); // -> true livePosition.is( 'model:livePosition' ); // -> true livePosition.is( 'view:position' ); // -> false livePosition.is( 'documentSelection' ); // -> false
Parameters
type : 'livePosition' | 'model:livePosition'
Returns
this is ModelLivePosition
-
is( type ) → this is ModelRange | ModelLiveRange
inheritedmodule:engine/model/textproxy~ModelTextProxy#is:RANGE
Checks whether the object is of type
ModelRange
or its subclass.range.is( 'range' ); // -> true range.is( 'model:range' ); // -> true range.is( 'view:range' ); // -> false range.is( 'documentSelection' ); // -> false
Parameters
type : 'range' | 'model:range'
Returns
this is ModelRange | ModelLiveRange
-
is( type ) → this is ModelPosition | ModelLivePosition
inheritedmodule:engine/model/textproxy~ModelTextProxy#is:POSITION
Checks whether the object is of type
ModelPosition
or its subclass.position.is( 'position' ); // -> true position.is( 'model:position' ); // -> true position.is( 'view:position' ); // -> false position.is( 'documentSelection' ); // -> false
Parameters
type : 'position' | 'model:position'
Returns
this is ModelPosition | ModelLivePosition
-
module:engine/model/textproxy~ModelTextProxy#is:TEXT
Checks whether the object is of type
ModelText
.text.is( '$text' ); // -> true text.is( 'node' ); // -> true text.is( 'model:$text' ); // -> true text.is( 'model:node' ); // -> true text.is( 'view:$text' ); // -> false text.is( 'documentSelection' ); // -> false
Note: 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:$text'
Returns
this is ModelText
-
is( type ) → this is ModelLiveRange
inheritedmodule:engine/model/textproxy~ModelTextProxy#is:LIVE_RANGE
Checks whether the object is of type
ModelLiveRange
.liveRange.is( 'range' ); // -> true liveRange.is( 'model:range' ); // -> true liveRange.is( 'liveRange' ); // -> true liveRange.is( 'model:liveRange' ); // -> true liveRange.is( 'view:range' ); // -> false liveRange.is( 'documentSelection' ); // -> false
Parameters
type : 'liveRange' | 'model:liveRange'
Returns
this is ModelLiveRange
-
is( type ) → this is ModelSelection | ModelDocumentSelection
inheritedmodule:engine/model/textproxy~ModelTextProxy#is:SELECTION
Checks whether the object is of type
ModelSelection
orModelDocumentSelection
.selection.is( 'selection' ); // -> true selection.is( 'model:selection' ); // -> true selection.is( 'view:selection' ); // -> false selection.is( 'range' ); // -> false
Parameters
type : 'selection' | 'model:selection'
Returns
this is ModelSelection | ModelDocumentSelection
-
module:engine/model/textproxy~ModelTextProxy#is:MARKER
-
is( type, name ) → boolean
inheritedmodule:engine/model/textproxy~ModelTextProxy#is:ELEMENT_NAME
Checks whether the object is of type
ModelElement
or its subclass and has the specifiedname
.element.is( 'element', 'imageBlock' ); // -> true if this is an <imageBlock> element text.is( 'element', 'imageBlock' ); -> false
Type parameters
N : extends string
Parameters
type : 'element' | 'model:element'
name : N
Returns
boolean
-
is( type, name ) → boolean
inheritedmodule:engine/model/textproxy~ModelTextProxy#is:ROOT_ELEMENT_NAME
Checks whether the object is of type
ModelRootElement
and has the specifiedname
.rootElement.is( 'rootElement', '$root' );
Type parameters
N : extends string
Parameters
type : 'rootElement' | 'model:rootElement'
name : N
Returns
boolean
-
is( type ) → this is ModelTextProxy
inheritedmodule:engine/model/textproxy~ModelTextProxy#is:TEXT_PROXY
Checks whether the object is of type
ModelTextProxy
.textProxy.is( '$textProxy' ); // -> true textProxy.is( 'model:$textProxy' ); // -> true textProxy.is( 'view:$textProxy' ); // -> false textProxy.is( 'range' ); // -> false
Note: Until version 20.0.0 this method wasn't accepting
'$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 ModelDocumentSelection
inheritedmodule:engine/model/textproxy~ModelTextProxy#is:DOCUMENT_SELECTION
Checks 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' ); // -> false
Parameters
type : 'documentSelection' | 'model:documentSelection'
Returns
this is ModelDocumentSelection
-
is( type ) → this is ModelDocumentFragment
inheritedmodule:engine/model/textproxy~ModelTextProxy#is:DOCUMENT_FRAGMENT
Checks 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' ); // -> false
Parameters
type : 'documentFragment' | 'model:documentFragment'
Returns
this is ModelDocumentFragment
-
is( type ) → this is ModelNode | ModelText | ModelElement | ModelRootElement
inheritedmodule:engine/model/textproxy~ModelTextProxy#is:NODE
Checks whether the object is of type
ModelNode
or its subclass.This method is useful when processing model objects that are of unknown type. For example, a function may return a
ModelDocumentFragment
or aModelNode
that 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 fragment
Since 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' ); // -> false
By 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 precise
Parameters
type : 'node' | 'model:node'
Returns
this is ModelNode | ModelText | ModelElement | ModelRootElement