106 lines
3.1 KiB
JavaScript
106 lines
3.1 KiB
JavaScript
"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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const he_1 = require("he");
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const node_1 = __importDefault(require("./node"));
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const type_1 = __importDefault(require("./type"));
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/**
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* TextNode to contain a text element in DOM tree.
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* @param {string} value [description]
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*/
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class TextNode extends node_1.default {
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clone() {
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return new TextNode(this._rawText, null);
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}
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constructor(rawText, parentNode = null, range) {
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super(parentNode, range);
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/**
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* Node Type declaration.
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* @type {Number}
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*/
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this.nodeType = type_1.default.TEXT_NODE;
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this.rawTagName = '';
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this._rawText = rawText;
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}
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get rawText() {
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return this._rawText;
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}
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/**
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* Set rawText and invalidate trimmed caches
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*/
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set rawText(text) {
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this._rawText = text;
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this._trimmedRawText = void 0;
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this._trimmedText = void 0;
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}
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/**
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* Returns raw text with all whitespace trimmed except single leading/trailing non-breaking space
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*/
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get trimmedRawText() {
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if (this._trimmedRawText !== undefined)
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return this._trimmedRawText;
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this._trimmedRawText = trimText(this.rawText);
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return this._trimmedRawText;
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}
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/**
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* Returns text with all whitespace trimmed except single leading/trailing non-breaking space
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*/
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get trimmedText() {
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if (this._trimmedText !== undefined)
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return this._trimmedText;
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this._trimmedText = trimText(this.text);
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return this._trimmedText;
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}
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/**
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* Get unescaped text value of current node and its children.
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* @return {string} text content
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*/
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get text() {
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return (0, he_1.decode)(this.rawText);
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}
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/**
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* Detect if the node contains only white space.
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* @return {boolean}
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*/
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get isWhitespace() {
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return /^(\s| )*$/.test(this.rawText);
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}
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toString() {
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return this.rawText;
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}
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}
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exports.default = TextNode;
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/**
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* Trim whitespace except single leading/trailing non-breaking space
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*/
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function trimText(text) {
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let i = 0;
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let startPos;
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let endPos;
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while (i >= 0 && i < text.length) {
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if (/\S/.test(text[i])) {
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if (startPos === undefined) {
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startPos = i;
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i = text.length;
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}
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else {
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endPos = i;
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i = void 0;
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}
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}
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if (startPos === undefined)
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i++;
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else
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i--;
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}
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if (startPos === undefined)
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startPos = 0;
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if (endPos === undefined)
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endPos = text.length - 1;
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const hasLeadingSpace = startPos > 0 && /[^\S\r\n]/.test(text[startPos - 1]);
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const hasTrailingSpace = endPos < (text.length - 1) && /[^\S\r\n]/.test(text[endPos + 1]);
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return (hasLeadingSpace ? ' ' : '') + text.slice(startPos, endPos + 1) + (hasTrailingSpace ? ' ' : '');
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}
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