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twbs--bootstrap/js/button.js
2015-02-11 11:29:43 -08:00

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/** =======================================================================
* Bootstrap: button.js v4.0.0
* http://getbootstrap.com/javascript/#buttons
* ========================================================================
* Copyright 2011-2015 Twitter, Inc.
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
* ========================================================================
* @fileoverview - Bootstrap's generic button component.
*
* Note (@fat): Deprecated "setState" imo, better solutions for managing a
* buttons state should exist outside this plugin.
*
* Public Methods & Properties:
*
* + $.button
* + $.button.noConflict
* + $.button.Constructor
* + $.button.Constructor.VERSION
* + $.button.Constructor.prototype.toggle
*
* ========================================================================
*/
'use strict';
/**
* Our Button class.
* @param {Element!} element
* @constructor
*/
var Button = function (element) {
/** @private {Element} */
this._element = element
}
/**
* @const
* @type {string}
*/
Button['VERSION'] = '4.0.0'
/**
* @const
* @type {string}
* @private
*/
Button._NAME = 'button'
/**
* @const
* @type {string}
* @private
*/
Button._DATA_KEY = 'bs.button'
/**
* @const
* @type {Function}
* @private
*/
Button._JQUERY_NO_CONFLICT = $.fn[Button._NAME]
/**
* @const
* @enum {string}
* @private
*/
Button._ClassName = {
ACTIVE : 'active',
BUTTON : 'btn',
FOCUS : 'focus'
}
/**
* @const
* @enum {string}
* @private
*/
Button._Selector = {
DATA_TOGGLE_CARROT : '[data-toggle^="button"]',
DATA_TOGGLE : '[data-toggle="buttons"]',
INPUT : 'input',
ACTIVE : '.active',
BUTTON : '.btn'
}
/**
* Provides the jQuery Interface for the Button component.
* @param {string=} opt_config
* @this {jQuery}
* @return {jQuery}
* @private
*/
Button._jQueryInterface = function (opt_config) {
return this.each(function () {
var data = $(this).data(Button._DATA_KEY)
if (!data) {
data = new Button(this)
$(this).data(Button._DATA_KEY, data)
}
if (opt_config === 'toggle') {
data[opt_config]()
}
})
}
/**
* Toggle's the button active state
*/
Button.prototype['toggle'] = function () {
var triggerChangeEvent = true
var rootElement = $(this._element).closest(Button._Selector.DATA_TOGGLE)[0]
if (rootElement) {
var input = $(this._element).find(Button._Selector.INPUT)[0]
if (input) {
if (input.type == 'radio') {
if (input.checked && $(this._element).hasClass(Button._ClassName.ACTIVE)) {
triggerChangeEvent = false
} else {
var activeElement = $(rootElement).find(Button._Selector.ACTIVE)[0]
if (activeElement) {
$(activeElement).removeClass(Button._ClassName.ACTIVE)
}
}
}
if (triggerChangeEvent) {
input.checked = !$(this._element).hasClass(Button._ClassName.ACTIVE)
$(this._element).trigger('change')
}
}
} else {
this._element.setAttribute('aria-pressed', !$(this._element).hasClass(Button._ClassName.ACTIVE))
}
if (triggerChangeEvent) {
$(this._element).toggleClass(Button._ClassName.ACTIVE)
}
}
/**
* ------------------------------------------------------------------------
* jQuery Interface + noConflict implementaiton
* ------------------------------------------------------------------------
*/
/**
* @const
* @type {Function}
*/
$.fn[Button._NAME] = Button._jQueryInterface
/**
* @const
* @type {Function}
*/
$.fn[Button._NAME]['Constructor'] = Button
/**
* @const
* @type {Function}
*/
$.fn[Button._NAME]['noConflict'] = function () {
$.fn[Button._NAME] = Button._JQUERY_NO_CONFLICT
return this
}
/**
* ------------------------------------------------------------------------
* Data Api implementation
* ------------------------------------------------------------------------
*/
$(document)
.on('click.bs.button.data-api', Button._Selector.DATA_TOGGLE_CARROT, function (event) {
event.preventDefault()
var button = event.target
if (!$(button).hasClass(Button._ClassName.BUTTON)) {
button = $(button).closest(Button._Selector.BUTTON)
}
Button._jQueryInterface.call($(button), 'toggle')
})
.on('focus.bs.button.data-api blur.bs.button.data-api', Button._Selector.DATA_TOGGLE_CARROT, function (event) {
var button = $(event.target).closest(Button._Selector.BUTTON)[0]
$(button).toggleClass(Button._ClassName.FOCUS, /^focus(in)?$/.test(event.type))
})