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- /**
- * @license Copyright (c) 2003-2018, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md.
- */
- /**
- * @module engine/model/text
- */
- import Node from './node';
- /**
- * Model text node. Type of {@link module:engine/model/node~Node node} that contains {@link module:engine/model/text~Text#data text data}.
- *
- * **Important:** see {@link module:engine/model/node~Node} to read about restrictions using `Text` and `Node` API.
- *
- * **Note:** keep in mind that `Text` instances might indirectly got removed from model tree when model is changed.
- * This happens when {@link module:engine/model/writer~Writer model writer} is used to change model and the text node is merged with
- * another text node. Then, both text nodes are removed and a new text node is inserted into the model. Because of
- * this behavior, keeping references to `Text` is not recommended. Instead, consider creating
- * {@link module:engine/model/liveposition~LivePosition live position} placed before the text node.
- *
- * @extends {module:engine/model/node~Node}
- */
- export default class Text extends Node {
- /**
- * Creates a text node.
- *
- * **Note:** Constructor of this class shouldn't be used directly in the code.
- * Use the {@link module:engine/model/writer~Writer#createText} method instead.
- *
- * @protected
- * @param {String} data Node's text.
- * @param {Object} [attrs] Node's attributes. See {@link module:utils/tomap~toMap} for a list of accepted values.
- */
- constructor( data, attrs ) {
- super( attrs );
- /**
- * Text data contained in this text node.
- *
- * @protected
- * @type {String}
- */
- this._data = data || '';
- }
- /**
- * @inheritDoc
- */
- get offsetSize() {
- return this.data.length;
- }
- /**
- * Returns a text data contained in the node.
- *
- * @returns {String}
- */
- get data() {
- return this._data;
- }
- /**
- * @inheritDoc
- */
- is( type ) {
- return type == 'text';
- }
- /**
- * Converts `Text` instance to plain object and returns it.
- *
- * @returns {Object} `Text` instance converted to plain object.
- */
- toJSON() {
- const json = super.toJSON();
- json.data = this.data;
- return json;
- }
- /**
- * Creates a copy of this text node and returns it. Created text node has same text data and attributes as original text node.
- *
- * @protected
- * @returns {module:engine/model/text~Text} `Text` instance created using given plain object.
- */
- _clone() {
- return new Text( this.data, this.getAttributes() );
- }
- /**
- * Creates a `Text` instance from given plain object (i.e. parsed JSON string).
- *
- * @param {Object} json Plain object to be converted to `Text`.
- * @returns {module:engine/model/text~Text} `Text` instance created using given plain object.
- */
- static fromJSON( json ) {
- return new Text( json.data, json.attributes );
- }
- }
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