Wrap switch in IIFE
Surma
parent
257aa342f9
commit
05ada74ec8
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@ -15,269 +15,265 @@
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* limitations under the License.
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*/
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/**
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* Class constructor for Checkbox 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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* @param {HTMLElement} element The element that will be upgraded.
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*/
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function MaterialSwitch(element) {
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(function() {
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'use strict';
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this.element_ = element;
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/**
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* Class constructor for Checkbox 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 MaterialSwitch = function MaterialSwitch(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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// Initialize instance.
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this.init();
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};
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window.MaterialSwitch = MaterialSwitch;
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/**
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* Store constants in one place so they can be updated easily.
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* @enum {string | number}
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* @private
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*/
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MaterialSwitch.prototype.Constant_ = {
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TINY_TIMEOUT: 0.001
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};
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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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MaterialSwitch.prototype.Constant_ = {
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TINY_TIMEOUT: 0.001
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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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* @enum {string}
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* @private
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*/
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MaterialSwitch.prototype.CssClasses_ = {
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INPUT: 'mdl-switch__input',
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TRACK: 'mdl-switch__track',
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THUMB: 'mdl-switch__thumb',
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FOCUS_HELPER: 'mdl-switch__focus-helper',
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RIPPLE_EFFECT: 'mdl-js-ripple-effect',
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RIPPLE_IGNORE_EVENTS: 'mdl-js-ripple-effect--ignore-events',
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RIPPLE_CONTAINER: 'mdl-switch__ripple-container',
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RIPPLE_CENTER: 'mdl-ripple--center',
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RIPPLE: 'mdl-ripple',
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IS_FOCUSED: 'is-focused',
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IS_DISABLED: 'is-disabled',
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IS_CHECKED: 'is-checked'
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};
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/**
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* Handle change of state.
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* @param {Event} event The event that fired.
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* @private
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*/
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MaterialSwitch.prototype.onChange_ = function(event) {
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'use strict';
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this.updateClasses_();
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};
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/**
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* Handle focus of element.
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* @param {Event} event The event that fired.
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* @private
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*/
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MaterialSwitch.prototype.onFocus_ = function(event) {
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'use strict';
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this.element_.classList.add(this.CssClasses_.IS_FOCUSED);
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};
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/**
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* Handle lost focus of element.
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* @param {Event} event The event that fired.
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* @private
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*/
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MaterialSwitch.prototype.onBlur_ = function(event) {
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'use strict';
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this.element_.classList.remove(this.CssClasses_.IS_FOCUSED);
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};
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/**
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* Handle mouseup.
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* @param {Event} event The event that fired.
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* @private
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*/
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MaterialSwitch.prototype.onMouseUp_ = function(event) {
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'use strict';
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this.blur_();
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};
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/**
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* Handle class updates.
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* @private
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*/
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MaterialSwitch.prototype.updateClasses_ = function() {
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'use strict';
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this.checkDisabled();
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this.checkToggleState();
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};
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/**
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* Add blur.
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* @private
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*/
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MaterialSwitch.prototype.blur_ = function(event) {
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'use strict';
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// TODO: figure out why there's a focus event being fired after our blur,
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// so that we can avoid this hack.
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window.setTimeout(function() {
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this.inputElement_.blur();
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}.bind(this), this.Constant_.TINY_TIMEOUT);
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};
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// Public methods.
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/**
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* Check the components disabled state.
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* @public
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*/
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MaterialSwitch.prototype.checkDisabled = function() {
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'use strict';
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if (this.inputElement_.disabled) {
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this.element_.classList.add(this.CssClasses_.IS_DISABLED);
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} else {
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this.element_.classList.remove(this.CssClasses_.IS_DISABLED);
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}
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};
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/**
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* Check the components toggled state.
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* @public
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*/
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MaterialSwitch.prototype.checkToggleState = function() {
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'use strict';
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if (this.inputElement_.checked) {
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this.element_.classList.add(this.CssClasses_.IS_CHECKED);
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} else {
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this.element_.classList.remove(this.CssClasses_.IS_CHECKED);
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}
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};
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/**
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* Disable switch.
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* @public
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*/
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MaterialSwitch.prototype.disable = function() {
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'use strict';
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this.inputElement_.disabled = true;
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this.updateClasses_();
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};
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/**
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* Enable switch.
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* @public
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*/
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MaterialSwitch.prototype.enable = function() {
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'use strict';
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this.inputElement_.disabled = false;
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this.updateClasses_();
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};
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/**
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* Activate switch.
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* @public
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*/
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MaterialSwitch.prototype.on = function() {
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'use strict';
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this.inputElement_.checked = true;
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this.updateClasses_();
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};
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/**
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* Deactivate switch.
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* @public
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*/
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MaterialSwitch.prototype.off = function() {
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'use strict';
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this.inputElement_.checked = false;
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this.updateClasses_();
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};
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/**
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* Initialize element.
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*/
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MaterialSwitch.prototype.init = function() {
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'use strict';
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if (this.element_) {
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this.inputElement_ = this.element_.querySelector('.' +
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this.CssClasses_.INPUT);
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var track = document.createElement('div');
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track.classList.add(this.CssClasses_.TRACK);
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var thumb = document.createElement('div');
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thumb.classList.add(this.CssClasses_.THUMB);
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var focusHelper = document.createElement('span');
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focusHelper.classList.add(this.CssClasses_.FOCUS_HELPER);
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thumb.appendChild(focusHelper);
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this.element_.appendChild(track);
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this.element_.appendChild(thumb);
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this.boundMouseUpHandler = this.onMouseUp_.bind(this);
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if (this.element_.classList.contains(
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this.CssClasses_.RIPPLE_EFFECT)) {
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this.element_.classList.add(
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this.CssClasses_.RIPPLE_IGNORE_EVENTS);
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this.rippleContainerElement_ = document.createElement('span');
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this.rippleContainerElement_.classList.add(
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this.CssClasses_.RIPPLE_CONTAINER);
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this.rippleContainerElement_.classList.add(this.CssClasses_.RIPPLE_EFFECT);
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this.rippleContainerElement_.classList.add(this.CssClasses_.RIPPLE_CENTER);
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this.rippleContainerElement_.addEventListener('mouseup', this.boundMouseUpHandler);
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var ripple = document.createElement('span');
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ripple.classList.add(this.CssClasses_.RIPPLE);
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this.rippleContainerElement_.appendChild(ripple);
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this.element_.appendChild(this.rippleContainerElement_);
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}
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this.boundChangeHandler = this.onChange_.bind(this);
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this.boundFocusHandler = this.onFocus_.bind(this);
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this.boundBlurHandler = this.onBlur_.bind(this);
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this.inputElement_.addEventListener('change', this.boundChangeHandler);
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this.inputElement_.addEventListener('focus', this.boundFocusHandler);
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this.inputElement_.addEventListener('blur', this.boundBlurHandler);
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this.element_.addEventListener('mouseup', this.boundMouseUpHandler);
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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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MaterialSwitch.prototype.CssClasses_ = {
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INPUT: 'mdl-switch__input',
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TRACK: 'mdl-switch__track',
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THUMB: 'mdl-switch__thumb',
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FOCUS_HELPER: 'mdl-switch__focus-helper',
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RIPPLE_EFFECT: 'mdl-js-ripple-effect',
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RIPPLE_IGNORE_EVENTS: 'mdl-js-ripple-effect--ignore-events',
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RIPPLE_CONTAINER: 'mdl-switch__ripple-container',
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RIPPLE_CENTER: 'mdl-ripple--center',
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RIPPLE: 'mdl-ripple',
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IS_FOCUSED: 'is-focused',
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IS_DISABLED: 'is-disabled',
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IS_CHECKED: 'is-checked'
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};
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/**
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* Handle change of state.
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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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MaterialSwitch.prototype.onChange_ = function(event) {
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this.updateClasses_();
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this.element_.classList.add('is-upgraded');
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}
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};
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};
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/*
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* Downgrade the component.
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*/
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MaterialSwitch.prototype.mdlDowngrade_ = function() {
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'use strict';
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if (this.rippleContainerElement_) {
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this.rippleContainerElement_.removeEventListener('mouseup', this.boundMouseUpHandler);
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}
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this.inputElement_.removeEventListener('change', this.boundChangeHandler);
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this.inputElement_.removeEventListener('focus', this.boundFocusHandler);
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this.inputElement_.removeEventListener('blur', this.boundBlurHandler);
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this.element_.removeEventListener('mouseup', this.boundMouseUpHandler);
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};
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/**
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* Handle focus 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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MaterialSwitch.prototype.onFocus_ = function(event) {
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this.element_.classList.add(this.CssClasses_.IS_FOCUSED);
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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: MaterialSwitch,
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classAsString: 'MaterialSwitch',
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cssClass: 'mdl-js-switch',
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widget: true
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});
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/**
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* Handle lost focus 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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MaterialSwitch.prototype.onBlur_ = function(event) {
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this.element_.classList.remove(this.CssClasses_.IS_FOCUSED);
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};
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/**
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* Handle mouseup.
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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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MaterialSwitch.prototype.onMouseUp_ = function(event) {
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this.blur_();
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};
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/**
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* Handle class updates.
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*
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* @private
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*/
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MaterialSwitch.prototype.updateClasses_ = function() {
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this.checkDisabled();
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this.checkToggleState();
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};
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/**
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* Add blur.
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*
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* @private
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*/
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MaterialSwitch.prototype.blur_ = function(event) {
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// TODO: figure out why there's a focus event being fired after our blur,
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// so that we can avoid this hack.
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window.setTimeout(function() {
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this.inputElement_.blur();
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}.bind(this), this.Constant_.TINY_TIMEOUT);
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};
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// Public methods.
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/**
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* Check the components disabled state.
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*
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* @public
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*/
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MaterialSwitch.prototype.checkDisabled = function() {
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if (this.inputElement_.disabled) {
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this.element_.classList.add(this.CssClasses_.IS_DISABLED);
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} else {
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this.element_.classList.remove(this.CssClasses_.IS_DISABLED);
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}
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};
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/**
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* Check the components toggled state.
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*
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* @public
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*/
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MaterialSwitch.prototype.checkToggleState = function() {
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if (this.inputElement_.checked) {
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this.element_.classList.add(this.CssClasses_.IS_CHECKED);
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} else {
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this.element_.classList.remove(this.CssClasses_.IS_CHECKED);
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}
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};
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/**
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* Disable switch.
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*
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* @public
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*/
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MaterialSwitch.prototype.disable = function() {
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this.inputElement_.disabled = true;
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this.updateClasses_();
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};
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/**
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* Enable switch.
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*
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* @public
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*/
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MaterialSwitch.prototype.enable = function() {
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this.inputElement_.disabled = false;
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this.updateClasses_();
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};
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/**
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* Activate switch.
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*
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* @public
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*/
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MaterialSwitch.prototype.on = function() {
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this.inputElement_.checked = true;
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this.updateClasses_();
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};
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/**
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* Deactivate switch.
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*
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* @public
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*/
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MaterialSwitch.prototype.off = function() {
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this.inputElement_.checked = false;
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this.updateClasses_();
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};
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/**
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* Initialize element.
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*/
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MaterialSwitch.prototype.init = function() {
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if (this.element_) {
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this.inputElement_ = this.element_.querySelector('.' +
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this.CssClasses_.INPUT);
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var track = document.createElement('div');
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track.classList.add(this.CssClasses_.TRACK);
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var thumb = document.createElement('div');
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thumb.classList.add(this.CssClasses_.THUMB);
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var focusHelper = document.createElement('span');
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focusHelper.classList.add(this.CssClasses_.FOCUS_HELPER);
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thumb.appendChild(focusHelper);
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this.element_.appendChild(track);
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this.element_.appendChild(thumb);
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this.boundMouseUpHandler = this.onMouseUp_.bind(this);
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if (this.element_.classList.contains(
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this.CssClasses_.RIPPLE_EFFECT)) {
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this.element_.classList.add(
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this.CssClasses_.RIPPLE_IGNORE_EVENTS);
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this.rippleContainerElement_ = document.createElement('span');
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this.rippleContainerElement_.classList.add(
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this.CssClasses_.RIPPLE_CONTAINER);
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this.rippleContainerElement_.classList.add(this.CssClasses_.RIPPLE_EFFECT);
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this.rippleContainerElement_.classList.add(this.CssClasses_.RIPPLE_CENTER);
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this.rippleContainerElement_.addEventListener('mouseup', this.boundMouseUpHandler);
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var ripple = document.createElement('span');
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ripple.classList.add(this.CssClasses_.RIPPLE);
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this.rippleContainerElement_.appendChild(ripple);
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this.element_.appendChild(this.rippleContainerElement_);
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}
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this.boundChangeHandler = this.onChange_.bind(this);
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this.boundFocusHandler = this.onFocus_.bind(this);
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this.boundBlurHandler = this.onBlur_.bind(this);
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this.inputElement_.addEventListener('change', this.boundChangeHandler);
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this.inputElement_.addEventListener('focus', this.boundFocusHandler);
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this.inputElement_.addEventListener('blur', this.boundBlurHandler);
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this.element_.addEventListener('mouseup', this.boundMouseUpHandler);
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this.updateClasses_();
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this.element_.classList.add('is-upgraded');
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}
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};
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/**
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* Downgrade the component.
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*
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* @private
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*/
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MaterialSwitch.prototype.mdlDowngrade_ = function() {
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if (this.rippleContainerElement_) {
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this.rippleContainerElement_.removeEventListener('mouseup', this.boundMouseUpHandler);
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}
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this.inputElement_.removeEventListener('change', this.boundChangeHandler);
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this.inputElement_.removeEventListener('focus', this.boundFocusHandler);
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this.inputElement_.removeEventListener('blur', this.boundBlurHandler);
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this.element_.removeEventListener('mouseup', this.boundMouseUpHandler);
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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: MaterialSwitch,
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classAsString: 'MaterialSwitch',
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cssClass: 'mdl-js-switch',
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widget: true
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});
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})();
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