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ModelTextProxy

Api-class icon class

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

Methods

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    constructor( textNode, offsetInText, length )
    internal

    Creates a text proxy.

    Parameters

    textNode : ModelText

    Text node which part is represented by this text proxy.

    offsetInText : number

    Offset in text node from which the text proxy starts.

    length : number

    Text proxy length, that is how many text node's characters, starting from offsetInText it represents.

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    getAncestors( options = { [options.includeSelf], [options.parentFirst] } ) → Array<ModelElement | ModelDocumentFragment | ModelTextProxy>

    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.

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    getAttribute( key ) → unknown

    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.

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    getAttributeKeys() → IterableIterator<string>

    Returns iterator that iterates over this node's attribute keys.

    Returns

    IterableIterator<string>
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    getAttributes() → IterableIterator<tuple>

    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 in Node constructor.

    Returns

    IterableIterator<tuple>
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    getPath() → Array<number>

    Gets path to this text proxy.

    Returns

    Array<number>

    Related:

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    hasAttribute( key ) → boolean

    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.

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    is( type ) → this is ModelElement | ModelRootElement
    inherited

    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
    
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    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
    
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    Parameters

    type : 'element' | 'model:element'

    Returns

    this is ModelElement | ModelRootElement
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    is( type ) → this is ModelRootElement
    inherited

    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
    
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    Assuming that the object being checked is an element, you can also check its name:

    rootElement.is( 'rootElement', '$root' ); // -> same as above
    
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    Parameters

    type : 'rootElement' | 'model:rootElement'

    Returns

    this is ModelRootElement
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    is( type ) → this is ModelLivePosition
    inherited

    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
    
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    Parameters

    type : 'livePosition' | 'model:livePosition'

    Returns

    this is ModelLivePosition
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    is( type ) → this is ModelRange | ModelLiveRange
    inherited

    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
    
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    Parameters

    type : 'range' | 'model:range'

    Returns

    this is ModelRange | ModelLiveRange
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    is( type ) → this is ModelPosition | ModelLivePosition
    inherited

    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
    
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    Parameters

    type : 'position' | 'model:position'

    Returns

    this is ModelPosition | ModelLivePosition
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    is( type ) → this is ModelText
    inherited

    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
    
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    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
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    is( type ) → this is ModelLiveRange
    inherited

    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
    
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    Parameters

    type : 'liveRange' | 'model:liveRange'

    Returns

    this is ModelLiveRange
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    is( type ) → this is ModelSelection | ModelDocumentSelection
    inherited

    Checks whether the object is of type ModelSelection or ModelDocumentSelection.

    selection.is( 'selection' ); // -> true
    selection.is( 'model:selection' ); // -> true
    
    selection.is( 'view:selection' ); // -> false
    selection.is( 'range' ); // -> false
    
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    Parameters

    type : 'selection' | 'model:selection'

    Returns

    this is ModelSelection | ModelDocumentSelection
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    is( type ) → this is Marker
    inherited

    Checks whether the object is of type Marker.

    marker.is( 'marker' ); // -> true
    marker.is( 'model:marker' ); // -> true
    
    marker.is( 'view:element' ); // -> false
    marker.is( 'documentSelection' ); // -> false
    
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    Parameters

    type : 'marker' | 'model:marker'

    Returns

    this is Marker
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    is( type, name ) → boolean
    inherited

    Checks whether the object is of type ModelElement or its subclass and has the specified name.

    element.is( 'element', 'imageBlock' ); // -> true if this is an <imageBlock> element
    text.is( 'element', 'imageBlock' ); -> false
    
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    Type parameters

    N : extends string

    Parameters

    type : 'element' | 'model:element'
    name : N

    Returns

    boolean
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    is( type, name ) → boolean
    inherited

    Checks whether the object is of type ModelRootElement and has the specified name.

    rootElement.is( 'rootElement', '$root' );
    
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    Type parameters

    N : extends string

    Parameters

    type : 'rootElement' | 'model:rootElement'
    name : N

    Returns

    boolean
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    is( type ) → this is ModelTextProxy
    inherited

    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
    
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    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
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    is( type ) → this is ModelDocumentSelection
    inherited

    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
    
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    Parameters

    type : 'documentSelection' | 'model:documentSelection'

    Returns

    this is ModelDocumentSelection
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    is( type ) → this is ModelDocumentFragment
    inherited

    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
    
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    Parameters

    type : 'documentFragment' | 'model:documentFragment'

    Returns

    this is ModelDocumentFragment
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    is( type ) → this is ModelNode | ModelText | ModelElement | ModelRootElement
    inherited

    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 a ModelNode 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
    
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    Since this method is also available on a range of view objects, you can prefix the type of the object with model: or view: to check, for example, if this is the model's or view's element:

    modelElement.is( 'model:element' ); // -> true
    modelElement.is( 'view:element' ); // -> false
    
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    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
    
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    Parameters

    type : 'node' | 'model:node'

    Returns

    this is ModelNode | ModelText | ModelElement | ModelRootElement