135 lines
3.8 KiB
JavaScript
135 lines
3.8 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 Button 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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* @param {HTMLElement} element The element that will be upgraded.
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*/
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var MaterialButton = function MaterialButton(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.MaterialButton = MaterialButton;
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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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MaterialButton.prototype.Constant_ = {
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// None for now.
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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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MaterialButton.prototype.CssClasses_ = {
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RIPPLE_EFFECT: 'mdl-js-ripple-effect',
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RIPPLE_CONTAINER: 'mdl-button__ripple-container',
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RIPPLE: 'mdl-ripple'
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};
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/**
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* Handle blur of element.
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*
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* @param {Event} event The event that fired.
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* @private
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*/
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MaterialButton.prototype.blurHandler_ = function(event) {
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if (event) {
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this.element_.blur();
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}
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};
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// Public methods.
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/**
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* Disable button.
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*
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* @public
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*/
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MaterialButton.prototype.disable = function() {
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this.element_.disabled = true;
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};
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/**
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* Enable button.
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*
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* @public
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*/
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MaterialButton.prototype.enable = function() {
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this.element_.disabled = false;
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};
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/**
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* Initialize element.
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*/
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MaterialButton.prototype.init = function() {
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if (this.element_) {
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if (this.element_.classList.contains(this.CssClasses_.RIPPLE_EFFECT)) {
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var rippleContainer = document.createElement('span');
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rippleContainer.classList.add(this.CssClasses_.RIPPLE_CONTAINER);
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this.rippleElement_ = document.createElement('span');
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this.rippleElement_.classList.add(this.CssClasses_.RIPPLE);
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rippleContainer.appendChild(this.rippleElement_);
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this.boundRippleBlurHandler = this.blurHandler_.bind(this);
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this.rippleElement_.addEventListener('mouseup', this.boundRippleBlurHandler);
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this.element_.appendChild(rippleContainer);
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}
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this.boundButtonBlurHandler = this.blurHandler_.bind(this);
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this.element_.addEventListener('mouseup', this.boundButtonBlurHandler);
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this.element_.addEventListener('mouseleave', this.boundButtonBlurHandler);
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}
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};
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/**
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* Downgrade the element.
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*
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* @private
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*/
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MaterialButton.prototype.mdlDowngrade_ = function() {
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if (this.rippleElement_) {
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this.rippleElement_.removeEventListener('mouseup', this.boundRippleBlurHandler);
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}
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this.element_.removeEventListener('mouseup', this.boundButtonBlurHandler);
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this.element_.removeEventListener('mouseleave', this.boundButtonBlurHandler);
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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: MaterialButton,
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classAsString: 'MaterialButton',
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cssClass: 'mdl-js-button',
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widget: true
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});
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})();
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