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- import NodeType from './type';
- import Node from './node';
- /**
- * TextNode to contain a text element in DOM tree.
- * @param {string} value [description]
- */
- export default class TextNode extends Node {
- constructor(rawText, parentNode) {
- super(parentNode);
- this.rawText = rawText;
- /**
- * Node Type declaration.
- * @type {Number}
- */
- this.nodeType = NodeType.TEXT_NODE;
- }
- /**
- * Returns text with all whitespace trimmed except single leading/trailing non-breaking space
- */
- get trimmedText() {
- if (this._trimmedText !== undefined)
- return this._trimmedText;
- const text = this.rawText;
- let i = 0;
- let startPos;
- let endPos;
- while (i >= 0 && i < text.length) {
- if (/\S/.test(text[i])) {
- if (startPos === undefined) {
- startPos = i;
- i = text.length;
- }
- else {
- endPos = i;
- i = void 0;
- }
- }
- if (startPos === undefined)
- i++;
- else
- i--;
- }
- if (startPos === undefined)
- startPos = 0;
- if (endPos === undefined)
- endPos = text.length - 1;
- const hasLeadingSpace = startPos > 0 && /[^\S\r\n]/.test(text[startPos - 1]);
- const hasTrailingSpace = endPos < (text.length - 1) && /[^\S\r\n]/.test(text[endPos + 1]);
- this._trimmedText = (hasLeadingSpace ? ' ' : '') + text.slice(startPos, endPos + 1) + (hasTrailingSpace ? ' ' : '');
- return this._trimmedText;
- }
- /**
- * Get unescaped text value of current node and its children.
- * @return {string} text content
- */
- get text() {
- return this.rawText;
- }
- /**
- * Detect if the node contains only white space.
- * @return {bool}
- */
- get isWhitespace() {
- return /^(\s| )*$/.test(this.rawText);
- }
- toString() {
- return this.text;
- }
- }
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