mirror of
https://github.com/google/blockly.git
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83 lines
2.4 KiB
JavaScript
83 lines
2.4 KiB
JavaScript
/**
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* @license
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* Visual Blocks Editor
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*
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* Copyright 2018 Google Inc.
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* https://developers.google.com/blockly/
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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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.provide('Blockly.utils.xml');
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/**
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* Namespace for Blockly's XML.
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*/
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Blockly.utils.xml.NAME_SPACE = 'https://developers.google.com/blockly/xml';
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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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Blockly.utils.xml.createElement = function(tagName) {
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// TODO (#2082): Support node.js.
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return document.createElementNS(Blockly.utils.xml.NAME_SPACE, tagName);
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};
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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 {!Node} New DOM node.
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*/
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Blockly.utils.xml.createTextNode = function(text) {
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// TODO (#2082): Support node.js.
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return document.createTextNode(text);
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};
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/**
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* Converts an XML string into a DOM tree. This method will be overridden in
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* the Node.js build of Blockly. See gulpfile.js, blockly_javascript_en task.
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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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Blockly.utils.xml.textToDomDocument = function(text) {
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var oParser = new DOMParser();
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return oParser.parseFromString(text, 'text/xml');
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};
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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 {!Element} dom A tree of XML elements.
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* @return {string} Text representation.
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*/
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Blockly.utils.xml.domToText = function(dom) {
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// TODO (#2082): Support node.js.
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var oSerializer = new XMLSerializer();
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return oSerializer.serializeToString(dom);
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};
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