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Issue 10244005: convert bookmark manager to loadTimeData from localStrings (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: remember to git add Created 8 years, 7 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 /** 5 <include src="./i18n_template_no_process.js"></include>
Dan Beam 2012/05/08 22:34:25 why not i18n_template2_no_process.js?
Evan Stade 2012/05/08 23:32:13 why should it be that? i18n_template2.js would be
Dan Beam 2012/05/08 23:46:51 because in the interim it sounds like you could in
6 * @fileoverview This is a simple template engine inspired by JsTemplates
7 * optimized for i18n.
8 *
9 * It currently supports three handlers:
10 *
11 * * i18n-content which sets the textContent of the element.
12 *
13 * <span i18n-content="myContent"></span>
14 *
15 * * i18n-options which generates <option> elements for a <select>.
16 *
17 * <select i18n-options="myOptionList"></select>
18 *
19 * * i18n-values is a list of attribute-value or property-value pairs.
20 * Properties are prefixed with a '.' and can contain nested properties.
21 *
22 * <span i18n-values="title:myTitle;.style.fontSize:fontSize"></span>
23 *
24 * This file is a copy of i18n_template.js, with minor tweaks to support using
25 * load_time_data.js. It should replace i18n_template.js eventually.
26 */
27
28 var i18nTemplate = (function() {
29 /**
30 * This provides the handlers for the templating engine. The key is used as
31 * the attribute name and the value is the function that gets called for every
32 * single node that has this attribute.
33 * @type {Object}
34 */
35 var handlers = {
36 /**
37 * This handler sets the textContent of the element.
38 * @param {HTMLElement} element The node to modify.
39 * @param {string} key The name of the value in the dictionary.
40 * @param {LoadTimeData} dictionary The dictionary of strings to draw from.
41 */
42 'i18n-content': function(element, key, dictionary) {
43 element.textContent = dictionary.getString(key);
44 },
45
46 /**
47 * This handler adds options to a <select> element.
48 * @param {HTMLElement} select The node to modify.
49 * @param {string} key The name of the value in the dictionary. It should
50 * identify an array of values to initialize an <option>. Each value,
51 * if a pair, represents [content, value]. Otherwise, it should be a
52 * content string with no value.
53 * @param {LoadTimeData} dictionary The dictionary of strings to draw from.
54 */
55 'i18n-options': function(select, key, dictionary) {
56 var options = dictionary.getString(key);
57 options.forEach(function(optionData) {
58 var option = typeof optionData == 'string' ?
59 new Option(optionData) :
60 new Option(optionData[1], optionData[0]);
61 select.appendChild(option);
62 });
63 },
64
65 /**
66 * This is used to set HTML attributes and DOM properties. The syntax is:
67 * attributename:key;
68 * .domProperty:key;
69 * .nested.dom.property:key
70 * @param {HTMLElement} element The node to modify.
71 * @param {string} attributeAndKeys The path of the attribute to modify
72 * followed by a colon, and the name of the value in the dictionary.
73 * Multiple attribute/key pairs may be separated by semicolons.
74 * @param {LoadTimeData} dictionary The dictionary of strings to draw from.
75 */
76 'i18n-values': function(element, attributeAndKeys, dictionary) {
77 var parts = attributeAndKeys.replace(/\s/g, '').split(/;/);
78 parts.forEach(function(part) {
79 if (!part)
80 return;
81
82 var attributeAndKeyPair = part.match(/^([^:]+):(.+)$/);
83 if (!attributeAndKeyPair)
84 throw new Error('malformed i18n-values: ' + attributeAndKeys);
85
86 var propName = attributeAndKeyPair[1];
87 var propExpr = attributeAndKeyPair[2];
88
89 var value = dictionary.getValue(propExpr);
90
91 // Allow a property of the form '.foo.bar' to assign a value into
92 // element.foo.bar.
93 if (propName[0] == '.') {
94 var path = propName.slice(1).split('.');
95 var targetObject = element;
96 while (targetObject && path.length > 1) {
97 targetObject = targetObject[path.shift()];
98 }
99 if (targetObject) {
100 targetObject[path] = value;
101 // In case we set innerHTML (ignoring others) we need to
102 // recursively check the content.
103 if (path == 'innerHTML')
104 process(element, dictionary);
105 }
106 } else {
107 element.setAttribute(propName, value);
108 }
109 });
110 }
111 };
112
113 var attributeNames = Object.keys(handlers);
114 var selector = '[' + attributeNames.join('],[') + ']';
115
116 /**
117 * Processes a DOM tree with the {@code dictionary} map.
118 * @param {HTMLElement} node The root of the DOM tree to process.
119 * @param {LoadTimeData} dictionary The dictionary to draw from.
120 */
121 function process(node, dictionary) {
122 var elements = node.querySelectorAll(selector);
123 for (var element, i = 0; element = elements[i]; i++) {
124 for (var j = 0; j < attributeNames.length; j++) {
125 var name = attributeNames[j];
126 var attribute = element.getAttribute(name);
127 if (attribute != null)
128 handlers[name](element, attribute, dictionary);
129 }
130 }
131 }
132
133 return {
134 process: process
135 };
136 }());
137 6
138 i18nTemplate.process(document, loadTimeData); 7 i18nTemplate.process(document, loadTimeData);
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