ckeditor5-image-upload-base64
Version:
The development environment of CKEditor 5 – the best browser-based rich text editor.
59 lines (50 loc) • 1.68 kB
JavaScript
/**
* @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
* For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
*/
/**
* @module engine/model/operation/nooperation
*/
import Operation from './operation';
/**
* Operation which is doing nothing ("empty operation", "do-nothing operation", "noop"). This is an operation,
* which when executed does not change the tree model. It still has some parameters defined for transformation purposes.
*
* In most cases this operation is a result of transforming operations. When transformation returns
* {@link module:engine/model/operation/nooperation~NoOperation} it means that changes done by the transformed operation
* have already been applied.
*
* @extends module:engine/model/operation/operation~Operation
*/
export default class NoOperation extends Operation {
get type() {
return 'noop';
}
/**
* Creates and returns an operation that has the same parameters as this operation.
*
* @returns {module:engine/model/operation/nooperation~NoOperation} Clone of this operation.
*/
clone() {
return new NoOperation( this.baseVersion );
}
/**
* See {@link module:engine/model/operation/operation~Operation#getReversed `Operation#getReversed()`}.
*
* @returns {module:engine/model/operation/nooperation~NoOperation}
*/
getReversed() {
return new NoOperation( this.baseVersion + 1 );
}
_execute() {
}
/**
* @inheritDoc
*/
static get className() {
return 'NoOperation';
}
// @if CK_DEBUG_ENGINE // toString() {
// @if CK_DEBUG_ENGINE // return `NoOperation( ${ this.baseVersion } )`;
// @if CK_DEBUG_ENGINE // }
}