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/**
* @license
* Copyright 2015 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
(function() {
'use strict';
/**
* Class constructor for Data Table Card MDL component.
* Implements MDL component design pattern defined at:
* https://github.com/jasonmayes/mdl-component-design-pattern
*
* @constructor
* @param {Element} element The element that will be upgraded.
*/
var MaterialDataTable = function MaterialDataTable(element) {
this.element_ = element;
// Initialize instance.
this.init();
};
window['MaterialDataTable'] = MaterialDataTable;
/**
* Store constants in one place so they can be updated easily.
*
* @enum {string | number}
* @private
*/
MaterialDataTable.prototype.Constant_ = {
// None at the moment.
};
/**
* Store strings for class names defined by this component that are used in
* JavaScript. This allows us to simply change it in one place should we
* decide to modify at a later date.
*
* @enum {string}
* @private
*/
MaterialDataTable.prototype.CssClasses_ = {
DATA_TABLE: 'mdl-data-table',
SELECTABLE: 'mdl-data-table--selectable',
SELECT_ELEMENT: 'mdl-data-table__select',
IS_SELECTED: 'is-selected',
IS_UPGRADED: 'is-upgraded'
};
/**
* Generates and returns a function that toggles the selection state of a
* single row (or multiple rows).
*
* @param {Element} checkbox Checkbox that toggles the selection state.
* @param {Element} row Row to toggle when checkbox changes.
* @param {(Array<Object>|NodeList)=} opt_rows Rows to toggle when checkbox changes.
* @private
*/
MaterialDataTable.prototype.selectRow_ = function(checkbox, row, opt_rows) {
if (row) {
return function() {
if (checkbox.checked) {
row.classList.add(this.CssClasses_.IS_SELECTED);
} else {
row.classList.remove(this.CssClasses_.IS_SELECTED);
}
}.bind(this);
}
if (opt_rows) {
return function() {
var i;
var el;
if (checkbox.checked) {
for (i = 0; i < opt_rows.length; i++) {
el = opt_rows[i].querySelector('td').querySelector('.mdl-checkbox');
el['MaterialCheckbox'].check();
opt_rows[i].classList.add(this.CssClasses_.IS_SELECTED);
}
} else {
for (i = 0; i < opt_rows.length; i++) {
el = opt_rows[i].querySelector('td').querySelector('.mdl-checkbox');
el['MaterialCheckbox'].uncheck();
opt_rows[i].classList.remove(this.CssClasses_.IS_SELECTED);
}
}
}.bind(this);
}
};
/**
* Creates a checkbox for a single or or multiple rows and hooks up the
* event handling.
*
* @param {Element} row Row to toggle when checkbox changes.
* @param {(Array<Object>|NodeList)=} opt_rows Rows to toggle when checkbox changes.
* @private
*/
MaterialDataTable.prototype.createCheckbox_ = function(row, opt_rows) {
var label = document.createElement('label');
var labelClasses = [
'mdl-checkbox',
'mdl-js-checkbox',
'mdl-js-ripple-effect',
this.CssClasses_.SELECT_ELEMENT
];
label.className = labelClasses.join(' ');
var checkbox = document.createElement('input');
checkbox.type = 'checkbox';
checkbox.classList.add('mdl-checkbox__input');
if (row) {
checkbox.checked = row.classList.contains(this.CssClasses_.IS_SELECTED);
checkbox.addEventListener('change', this.selectRow_(checkbox, row));
} else if (opt_rows) {
checkbox.addEventListener('change', this.selectRow_(checkbox, null, opt_rows));
}
label.appendChild(checkbox);
componentHandler.upgradeElement(label, 'MaterialCheckbox');
return label;
};
/**
* Initialize element.
*/
MaterialDataTable.prototype.init = function() {
if (this.element_) {
var firstHeader = this.element_.querySelector('th');
var bodyRows = Array.prototype.slice.call(this.element_.querySelectorAll('tbody tr'));
var footRows = Array.prototype.slice.call(this.element_.querySelectorAll('tfoot tr'));
var rows = bodyRows.concat(footRows);
if (this.element_.classList.contains(this.CssClasses_.SELECTABLE)) {
var th = document.createElement('th');
var headerCheckbox = this.createCheckbox_(null, rows);
th.appendChild(headerCheckbox);
firstHeader.parentElement.insertBefore(th, firstHeader);
for (var i = 0; i < rows.length; i++) {
var firstCell = rows[i].querySelector('td');
if (firstCell) {
var td = document.createElement('td');
if (rows[i].parentNode.nodeName.toUpperCase() === 'TBODY') {
var rowCheckbox = this.createCheckbox_(rows[i]);
td.appendChild(rowCheckbox);
}
rows[i].insertBefore(td, firstCell);
}
}
this.element_.classList.add(this.CssClasses_.IS_UPGRADED);
}
}
};
// The component registers itself. It can assume componentHandler is available
// in the global scope.
componentHandler.register({
constructor: MaterialDataTable,
classAsString: 'MaterialDataTable',
cssClass: 'mdl-js-data-table'
});
})();