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101 lines
2.5 KiB
JavaScript
101 lines
2.5 KiB
JavaScript
/**
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* @license
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* Copyright 2018 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @fileoverview XML element manipulation.
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* These methods are not specific to Blockly, and could be factored out into
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* a JavaScript framework such as Closure.
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* @author fraser@google.com (Neil Fraser)
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*/
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'use strict';
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/**
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* @name Blockly.utils.xml
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* @namespace
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*/
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goog.module('Blockly.utils.xml');
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goog.module.declareLegacyNamespace();
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const {globalThis} = goog.require('Blockly.utils.global');
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/**
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* Namespace for Blockly's XML.
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*/
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const NAME_SPACE = 'https://developers.google.com/blockly/xml';
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exports.NAME_SPACE = NAME_SPACE;
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/**
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* The Document object to use. By default this is just document, but
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* the Node.js build of Blockly (see scripts/package/node/core.js)
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* calls setDocument to supply a Document implementation from the
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* jsdom package instead.
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* @type {!Document}
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*/
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let xmlDocument = globalThis.document;
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/**
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* Get the document object to use for XML serialization.
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* @return {!Document} The document object.
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*/
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const getDocument = function() {
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return xmlDocument;
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};
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exports.getDocument = getDocument;
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/**
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* Get the document object to use for XML serialization.
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* @param {!Document} document The document object to use.
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*/
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const setDocument = function(document) {
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xmlDocument = document;
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};
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exports.setDocument = setDocument;
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/**
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* Create DOM element for XML.
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* @param {string} tagName Name of DOM element.
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* @return {!Element} New DOM element.
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*/
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const createElement = function(tagName) {
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return xmlDocument.createElementNS(NAME_SPACE, tagName);
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};
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exports.createElement = createElement;
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/**
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* Create text element for XML.
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* @param {string} text Text content.
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* @return {!Text} New DOM text node.
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*/
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const createTextNode = function(text) {
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return xmlDocument.createTextNode(text);
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};
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exports.createTextNode = createTextNode;
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/**
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* Converts an XML string into a DOM tree.
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* @param {string} text XML string.
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* @return {Document} The DOM document.
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* @throws if XML doesn't parse.
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*/
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const textToDomDocument = function(text) {
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const oParser = new DOMParser();
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return oParser.parseFromString(text, 'text/xml');
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};
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exports.textToDomDocument = textToDomDocument;
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/**
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* Converts a DOM structure into plain text.
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* Currently the text format is fairly ugly: all one line with no whitespace.
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* @param {!Node} dom A tree of XML nodes.
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* @return {string} Text representation.
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*/
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const domToText = function(dom) {
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const oSerializer = new XMLSerializer();
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return oSerializer.serializeToString(dom);
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};
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exports.domToText = domToText;
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