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Class

CKEDITOR.plugins.clipboard.fallbackDataTransfer

class since 4.8.0
See source

Fallback dataTransfer object which is used together with CKEDITOR.plugins.clipboard.dataTransfer for browsers supporting Clipboard API, but not supporting custom MIME types (Edge 16+, see ckeditor4/issues/#962).

Filtering

Properties

  • private

    _customDataFallbackType : String

    See source

    A MIME type used for storing custom MIME types.

    Defaults to 'text/html'

  • private

    _dataTransfer : dataTransfer

    See source

    DataTransfer object which internal cache and data transfer objects will be modified if needed.

Static properties

  • private static

    _customTypes : String[]

    See source

    Array containing MIME types which are not supported by native setData. Those types are recognized by error which is thrown when using native setData with a given type (see _isUnsupportedMimeTypeError).

    Defaults to []

  • private static

    _isCustomMimeTypeSupported : Boolean

    See source

    True if the environment supports custom MIME types in CKEDITOR.plugins.clipboard.dataTransfer.getData and CKEDITOR.plugins.clipboard.dataTransfer.setData methods.

    Introduced to distinguish between browsers which support only some whitelisted types (like text/html, application/xml), but do not support custom MIME types (like cke/id). When the value of this property equals null it means it was not yet initialized.

    This property should not be accessed directly, use isRequired method instead.

Methods

  • constructor( dataTransfer ) → fallbackDataTransfer

    See source

    Parameters

    dataTransfer : dataTransfer

    DataTransfer object which internal cache and data transfer objects will be reused.

    Returns

    fallbackDataTransfer

  • getData( type, [ getNative ] ) → String

    See source

    Returns the data of the given MIME type if stored in a regular way or in a special comment. If given type is the same as _customDataFallbackType the whole data without special comment is returned.

    Parameters

    type : String
    [ getNative ] : Boolean

    Indicates if the whole, original content of the dataTransfer should be returned.

    Defaults to false

    Returns

    String

  • isRequired() → Boolean

    See source

    Whether fallbackDataTransfer object should be used when operating on native dataTransfer. If true is returned, it means custom MIME types are not supported in the current browser (see _isCustomMimeTypeSupported).

    Returns

    Boolean

  • setData( type, value ) → String

    See source

    Sets given data in native dataTransfer object. If given MIME type is not supported it uses _customDataFallbackType MIME type to save data using special comment format:

        <!--cke-data:{ type: value }-->

    It is important to keep in mind that { type: value } object is stringified (using JSON.stringify) and encoded (using encodeURIComponent).

    Parameters

    type : String
    value : String

    Returns

    String

    The value which was set.

  • private

    _applyDataComment( content, data ) → String

    See source

    Creates cke-data comment containing stringified and encoded data object which is prepended to a given content.

    Parameters

    content : String
    data : Object

    Returns

    String

  • private

    _extractDataComment( content ) → Object

    See source

    Extracts cke-data comment from the given content.

    Parameters

    content : String

    Returns

    Object

    Returns an object containing extracted data as data and content (without cke-data comment) as content.

    Properties
    data : null

    Object containing MIME type : value pairs or null if cke-data comment is not present.

    content : String

    Regular content without cke-data comment.

  • private

    _getData( type, [ skipCache ] ) → null

    See source

    Native getData wrapper.

    Parameters

    type : String
    [ skipCache ] : Boolean

    Defaults to false

    Returns

    null

  • private

    _getFallbackTypeContent() → String

    See source

    Returns content stored in _customDataFallbackType. Content is always first retrieved from _dataTransfer cache and then from native dataTransfer object.

    Returns

    String

  • private

    _getFallbackTypeData() → Object

    See source

    Returns custom data stored in _customDataFallbackType. Custom data is always first retrieved from _dataTransfer cache and then from native dataTransfer object.

    Returns

    Object

  • private

    _isUnsupportedMimeTypeError( error ) → Boolean

    See source

    Whether provided error means that unsupported MIME type was used when calling native dataTransfer.setData method.

    Parameters

    error : Error

    Returns

    Boolean