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Copybara botbe50d492023-11-30 00:16:42 +01001/**
2 * @license
3 * Copyright 2015 Google Inc. All Rights Reserved.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18(function() {
19 'use strict';
20
21 /**
22 * Class constructor for Data Table Card MDL component.
23 * Implements MDL component design pattern defined at:
24 * https://github.com/jasonmayes/mdl-component-design-pattern
25 *
26 * @constructor
27 * @param {Element} element The element that will be upgraded.
28 */
29 var MaterialDataTable = function MaterialDataTable(element) {
30 this.element_ = element;
31
32 // Initialize instance.
33 this.init();
34 };
35
36 window['MaterialDataTable'] = MaterialDataTable;
37
38 /**
39 * Store constants in one place so they can be updated easily.
40 *
41 * @enum {string | number}
42 * @private
43 */
44 MaterialDataTable.prototype.Constant_ = {
45 // None at the moment.
46 };
47
48 /**
49 * Store strings for class names defined by this component that are used in
50 * JavaScript. This allows us to simply change it in one place should we
51 * decide to modify at a later date.
52 *
53 * @enum {string}
54 * @private
55 */
56 MaterialDataTable.prototype.CssClasses_ = {
57 DATA_TABLE: 'mdl-data-table',
58 SELECTABLE: 'mdl-data-table--selectable',
59 SELECT_ELEMENT: 'mdl-data-table__select',
60 IS_SELECTED: 'is-selected',
61 IS_UPGRADED: 'is-upgraded'
62 };
63
64 /**
65 * Generates and returns a function that toggles the selection state of a
66 * single row (or multiple rows).
67 *
68 * @param {Element} checkbox Checkbox that toggles the selection state.
69 * @param {Element} row Row to toggle when checkbox changes.
70 * @param {(Array<Object>|NodeList)=} opt_rows Rows to toggle when checkbox changes.
71 * @private
72 */
73 MaterialDataTable.prototype.selectRow_ = function(checkbox, row, opt_rows) {
74 if (row) {
75 return function() {
76 if (checkbox.checked) {
77 row.classList.add(this.CssClasses_.IS_SELECTED);
78 } else {
79 row.classList.remove(this.CssClasses_.IS_SELECTED);
80 }
81 }.bind(this);
82 }
83
84 if (opt_rows) {
85 return function() {
86 var i;
87 var el;
88 if (checkbox.checked) {
89 for (i = 0; i < opt_rows.length; i++) {
90 el = opt_rows[i].querySelector('td').querySelector('.mdl-checkbox');
91 el['MaterialCheckbox'].check();
92 opt_rows[i].classList.add(this.CssClasses_.IS_SELECTED);
93 }
94 } else {
95 for (i = 0; i < opt_rows.length; i++) {
96 el = opt_rows[i].querySelector('td').querySelector('.mdl-checkbox');
97 el['MaterialCheckbox'].uncheck();
98 opt_rows[i].classList.remove(this.CssClasses_.IS_SELECTED);
99 }
100 }
101 }.bind(this);
102 }
103 };
104
105 /**
106 * Creates a checkbox for a single or or multiple rows and hooks up the
107 * event handling.
108 *
109 * @param {Element} row Row to toggle when checkbox changes.
110 * @param {(Array<Object>|NodeList)=} opt_rows Rows to toggle when checkbox changes.
111 * @private
112 */
113 MaterialDataTable.prototype.createCheckbox_ = function(row, opt_rows) {
114 var label = document.createElement('label');
115 var labelClasses = [
116 'mdl-checkbox',
117 'mdl-js-checkbox',
118 'mdl-js-ripple-effect',
119 this.CssClasses_.SELECT_ELEMENT
120 ];
121 label.className = labelClasses.join(' ');
122 var checkbox = document.createElement('input');
123 checkbox.type = 'checkbox';
124 checkbox.classList.add('mdl-checkbox__input');
125
126 if (row) {
127 checkbox.checked = row.classList.contains(this.CssClasses_.IS_SELECTED);
128 checkbox.addEventListener('change', this.selectRow_(checkbox, row));
129 } else if (opt_rows) {
130 checkbox.addEventListener('change', this.selectRow_(checkbox, null, opt_rows));
131 }
132
133 label.appendChild(checkbox);
134 componentHandler.upgradeElement(label, 'MaterialCheckbox');
135 return label;
136 };
137
138 /**
139 * Initialize element.
140 */
141 MaterialDataTable.prototype.init = function() {
142 if (this.element_) {
143 var firstHeader = this.element_.querySelector('th');
144 var bodyRows = Array.prototype.slice.call(this.element_.querySelectorAll('tbody tr'));
145 var footRows = Array.prototype.slice.call(this.element_.querySelectorAll('tfoot tr'));
146 var rows = bodyRows.concat(footRows);
147
148 if (this.element_.classList.contains(this.CssClasses_.SELECTABLE)) {
149 var th = document.createElement('th');
150 var headerCheckbox = this.createCheckbox_(null, rows);
151 th.appendChild(headerCheckbox);
152 firstHeader.parentElement.insertBefore(th, firstHeader);
153
154 for (var i = 0; i < rows.length; i++) {
155 var firstCell = rows[i].querySelector('td');
156 if (firstCell) {
157 var td = document.createElement('td');
158 if (rows[i].parentNode.nodeName.toUpperCase() === 'TBODY') {
159 var rowCheckbox = this.createCheckbox_(rows[i]);
160 td.appendChild(rowCheckbox);
161 }
162 rows[i].insertBefore(td, firstCell);
163 }
164 }
165 this.element_.classList.add(this.CssClasses_.IS_UPGRADED);
166 }
167 }
168 };
169
170 // The component registers itself. It can assume componentHandler is available
171 // in the global scope.
172 componentHandler.register({
173 constructor: MaterialDataTable,
174 classAsString: 'MaterialDataTable',
175 cssClass: 'mdl-js-data-table'
176 });
177})();