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- /**
- * @license Copyright (c) 2003-2016, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md.
- */
- import Operation from './operation.js';
- import Position from '../position.js';
- import NodeList from '../nodelist.js';
- import RemoveOperation from './removeoperation.js';
- import writer from './../writer.js';
- import { normalizeNodes } from './../writer.js';
- import Text from '../text.js';
- import Element from '../element.js';
- /**
- * Operation to insert one or more nodes at given position in the model.
- *
- * @memberOf engine.model.operation
- * @extends engine.model.operation.Operation
- */
- export default class InsertOperation extends Operation {
- /**
- * Creates an insert operation.
- *
- * @param {engine.model.Position} position Position of insertion.
- * @param {engine.model.NodeSet} nodes The list of nodes to be inserted.
- * @param {Number} baseVersion {@link engine.model.Document#version} on which operation can be applied.
- */
- constructor( position, nodes, baseVersion ) {
- super( baseVersion );
- /**
- * Position of insertion.
- *
- * @readonly
- * @member {engine.model.Position} engine.model.operation.InsertOperation#position
- */
- this.position = Position.createFromPosition( position );
- /**
- * List of nodes to insert.
- *
- * @readonly
- * @member {engine.model.NodeList} engine.model.operation.InsertOperation#nodeList
- */
- this.nodes = new NodeList( normalizeNodes( nodes ) );
- }
- /**
- * @inheritDoc
- */
- get type() {
- return 'insert';
- }
- /**
- * @inheritDoc
- * @returns {engine.model.operation.InsertOperation}
- */
- clone() {
- return new InsertOperation( this.position, this.nodes, this.baseVersion );
- }
- /**
- * @inheritDoc
- * @returns {engine.model.operation.RemoveOperation}
- */
- getReversed() {
- return new RemoveOperation( this.position, this.nodes.getMaxOffset(), this.baseVersion + 1 );
- }
- /**
- * @inheritDoc
- */
- _execute() {
- // What happens here is that we want original nodes be passed to writer because we want original nodes
- // to be inserted to the model. But in InsertOperation, we want to keep those nodes as they were added
- // to the operation, not modified. For example, text nodes can get merged or cropped while Elements can
- // get children. It is important that InsertOperation has the copy of original nodes in intact state.
- const originalNodes = this.nodes;
- this.nodes = new NodeList( [ ...originalNodes ].map( ( node ) => node.clone( true ) ) );
- const range = writer.insert( this.position, originalNodes );
- return { range };
- }
- /**
- * @inheritDoc
- */
- static get className() {
- return 'engine.model.operation.InsertOperation';
- }
- /**
- * Creates `InsertOperation` object from deserilized object, i.e. from parsed JSON string.
- *
- * @param {Object} json Deserialized JSON object.
- * @param {engine.model.Document} document Document on which this operation will be applied.
- * @returns {engine.model.operation.InsertOperation}
- */
- static fromJSON( json, document ) {
- let children = [];
- for ( let child of json.nodes ) {
- if ( child.name ) {
- // If child has name property, it is an Element.
- children.push( Element.fromJSON( child ) );
- } else {
- // Otherwise, it is a Text node.
- children.push( Text.fromJSON( child ) );
- }
- }
- return new InsertOperation( Position.fromJSON( json.position, document ), children, json.baseVersion );
- }
- }
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