181 lines
5.9 KiB
JavaScript
181 lines
5.9 KiB
JavaScript
/**
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* @license
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* Copyright 2015 Google Inc. All Rights Reserved.
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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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(function() {
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'use strict';
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/**
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* Class constructor for Data Table Card MDL component.
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* Implements MDL component design pattern defined at:
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* https://github.com/jasonmayes/mdl-component-design-pattern
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*
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* @constructor
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* @param {Element} element The element that will be upgraded.
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*/
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var MaterialDataTable = function MaterialDataTable(element) {
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this.element_ = element;
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// Initialize instance.
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this.init();
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};
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window['MaterialDataTable'] = MaterialDataTable;
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/**
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* Store constants in one place so they can be updated easily.
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*
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* @enum {string | number}
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* @private
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*/
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MaterialDataTable.prototype.Constant_ = {
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// None at the moment.
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};
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/**
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* Store strings for class names defined by this component that are used in
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* JavaScript. This allows us to simply change it in one place should we
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* decide to modify at a later date.
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*
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* @enum {string}
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* @private
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*/
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MaterialDataTable.prototype.CssClasses_ = {
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DATA_TABLE: 'mdl-data-table',
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SELECTABLE: 'mdl-data-table--selectable',
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SELECT_ELEMENT: 'mdl-data-table__select',
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IS_SELECTED: 'is-selected',
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IS_UPGRADED: 'is-upgraded'
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};
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/**
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* Generates and returns a function that toggles the selection state of a
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* single row (or multiple rows).
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*
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* @param {Element} checkbox Checkbox that toggles the selection state.
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* @param {Element} row Row to toggle when checkbox changes.
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* @param {(Array<Object>|NodeList)=} opt_rows Rows to toggle when checkbox changes.
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* @private
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*/
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MaterialDataTable.prototype.selectRow_ = function(checkbox, row, opt_rows) {
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if (row) {
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return function() {
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if (checkbox.checked) {
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row.classList.add(this.CssClasses_.IS_SELECTED);
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} else {
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row.classList.remove(this.CssClasses_.IS_SELECTED);
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var thead_checkbox = this.element_.tHead.querySelector('.mdl-checkbox.is-checked');
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if(thead_checkbox !== null){
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thead_checkbox['MaterialCheckbox'].uncheck();
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}
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}
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}.bind(this);
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}
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if (opt_rows) {
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return function() {
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var i;
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var el;
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if (checkbox.checked) {
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for (i = 0; i < opt_rows.length; i++) {
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el = opt_rows[i].querySelector('td').querySelector('.mdl-checkbox');
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el['MaterialCheckbox'].check();
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opt_rows[i].classList.add(this.CssClasses_.IS_SELECTED);
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}
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} else {
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for (i = 0; i < opt_rows.length; i++) {
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el = opt_rows[i].querySelector('td').querySelector('.mdl-checkbox');
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el['MaterialCheckbox'].uncheck();
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opt_rows[i].classList.remove(this.CssClasses_.IS_SELECTED);
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}
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}
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}.bind(this);
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}
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};
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/**
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* Creates a checkbox for a single or or multiple rows and hooks up the
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* event handling.
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*
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* @param {Element} row Row to toggle when checkbox changes.
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* @param {(Array<Object>|NodeList)=} opt_rows Rows to toggle when checkbox changes.
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* @private
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*/
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MaterialDataTable.prototype.createCheckbox_ = function(row, opt_rows) {
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var label = document.createElement('label');
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var labelClasses = [
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'mdl-checkbox',
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'mdl-js-checkbox',
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'mdl-js-ripple-effect',
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this.CssClasses_.SELECT_ELEMENT
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];
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label.className = labelClasses.join(' ');
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var checkbox = document.createElement('input');
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checkbox.type = 'checkbox';
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checkbox.classList.add('mdl-checkbox__input');
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if (row) {
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checkbox.checked = row.classList.contains(this.CssClasses_.IS_SELECTED);
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checkbox.addEventListener('change', this.selectRow_(checkbox, row));
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} else if (opt_rows) {
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checkbox.addEventListener('change', this.selectRow_(checkbox, null, opt_rows));
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}
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label.appendChild(checkbox);
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componentHandler.upgradeElement(label, 'MaterialCheckbox');
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return label;
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};
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/**
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* Initialize element.
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*/
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MaterialDataTable.prototype.init = function() {
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if (this.element_) {
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var firstHeader = this.element_.querySelector('th');
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var bodyRows = Array.prototype.slice.call(this.element_.querySelectorAll('tbody tr'));
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var footRows = Array.prototype.slice.call(this.element_.querySelectorAll('tfoot tr'));
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var rows = bodyRows.concat(footRows);
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if (this.element_.classList.contains(this.CssClasses_.SELECTABLE)) {
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var th = document.createElement('th');
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var headerCheckbox = this.createCheckbox_(null, rows);
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th.appendChild(headerCheckbox);
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firstHeader.parentElement.insertBefore(th, firstHeader);
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for (var i = 0; i < rows.length; i++) {
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var firstCell = rows[i].querySelector('td');
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if (firstCell) {
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var td = document.createElement('td');
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if (rows[i].parentNode.nodeName.toUpperCase() === 'TBODY') {
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var rowCheckbox = this.createCheckbox_(rows[i]);
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td.appendChild(rowCheckbox);
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}
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rows[i].insertBefore(td, firstCell);
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}
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}
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this.element_.classList.add(this.CssClasses_.IS_UPGRADED);
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}
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}
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};
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// The component registers itself. It can assume componentHandler is available
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// in the global scope.
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componentHandler.register({
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constructor: MaterialDataTable,
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classAsString: 'MaterialDataTable',
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cssClass: 'mdl-js-data-table'
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});
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})();
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