sp-codes.de/bower_components/foundation-sites/js/foundation.accordion.js
2016-10-28 19:33:25 +02:00

237 lines
6.3 KiB
JavaScript

'use strict';
!function($) {
/**
* Accordion module.
* @module foundation.accordion
* @requires foundation.util.keyboard
* @requires foundation.util.motion
*/
class Accordion {
/**
* Creates a new instance of an accordion.
* @class
* @fires Accordion#init
* @param {jQuery} element - jQuery object to make into an accordion.
* @param {Object} options - a plain object with settings to override the default options.
*/
constructor(element, options) {
this.$element = element;
this.options = $.extend({}, Accordion.defaults, this.$element.data(), options);
this._init();
Foundation.registerPlugin(this, 'Accordion');
Foundation.Keyboard.register('Accordion', {
'ENTER': 'toggle',
'SPACE': 'toggle',
'ARROW_DOWN': 'next',
'ARROW_UP': 'previous'
});
}
/**
* Initializes the accordion by animating the preset active pane(s).
* @private
*/
_init() {
this.$element.attr('role', 'tablist');
this.$tabs = this.$element.children('li, [data-accordion-item]');
this.$tabs.each(function(idx, el) {
var $el = $(el),
$content = $el.children('[data-tab-content]'),
id = $content[0].id || Foundation.GetYoDigits(6, 'accordion'),
linkId = el.id || `${id}-label`;
$el.find('a:first').attr({
'aria-controls': id,
'role': 'tab',
'id': linkId,
'aria-expanded': false,
'aria-selected': false
});
$content.attr({'role': 'tabpanel', 'aria-labelledby': linkId, 'aria-hidden': true, 'id': id});
});
var $initActive = this.$element.find('.is-active').children('[data-tab-content]');
if($initActive.length){
this.down($initActive, true);
}
this._events();
}
/**
* Adds event handlers for items within the accordion.
* @private
*/
_events() {
var _this = this;
this.$tabs.each(function() {
var $elem = $(this);
var $tabContent = $elem.children('[data-tab-content]');
if ($tabContent.length) {
$elem.children('a').off('click.zf.accordion keydown.zf.accordion')
.on('click.zf.accordion', function(e) {
// $(this).children('a').on('click.zf.accordion', function(e) {
e.preventDefault();
if ($elem.hasClass('is-active')) {
if(_this.options.allowAllClosed || $elem.siblings().hasClass('is-active')){
_this.up($tabContent);
}
}
else {
_this.down($tabContent);
}
}).on('keydown.zf.accordion', function(e){
Foundation.Keyboard.handleKey(e, 'Accordion', {
toggle: function() {
_this.toggle($tabContent);
},
next: function() {
var $a = $elem.next().find('a').focus();
if (!_this.options.multiExpand) {
$a.trigger('click.zf.accordion')
}
},
previous: function() {
var $a = $elem.prev().find('a').focus();
if (!_this.options.multiExpand) {
$a.trigger('click.zf.accordion')
}
},
handled: function() {
e.preventDefault();
e.stopPropagation();
}
});
});
}
});
}
/**
* Toggles the selected content pane's open/close state.
* @param {jQuery} $target - jQuery object of the pane to toggle.
* @function
*/
toggle($target) {
if($target.parent().hasClass('is-active')) {
if(this.options.allowAllClosed || $target.parent().siblings().hasClass('is-active')){
this.up($target);
} else { return; }
} else {
this.down($target);
}
}
/**
* Opens the accordion tab defined by `$target`.
* @param {jQuery} $target - Accordion pane to open.
* @param {Boolean} firstTime - flag to determine if reflow should happen.
* @fires Accordion#down
* @function
*/
down($target, firstTime) {
if (!this.options.multiExpand && !firstTime) {
var $currentActive = this.$element.children('.is-active').children('[data-tab-content]');
if($currentActive.length){
this.up($currentActive);
}
}
$target
.attr('aria-hidden', false)
.parent('[data-tab-content]')
.addBack()
.parent().addClass('is-active');
$target.slideDown(this.options.slideSpeed, () => {
/**
* Fires when the tab is done opening.
* @event Accordion#down
*/
this.$element.trigger('down.zf.accordion', [$target]);
});
$(`#${$target.attr('aria-labelledby')}`).attr({
'aria-expanded': true,
'aria-selected': true
});
}
/**
* Closes the tab defined by `$target`.
* @param {jQuery} $target - Accordion tab to close.
* @fires Accordion#up
* @function
*/
up($target) {
var $aunts = $target.parent().siblings(),
_this = this;
var canClose = this.options.multiExpand ? $aunts.hasClass('is-active') : $target.parent().hasClass('is-active');
if(!this.options.allowAllClosed && !canClose) {
return;
}
// Foundation.Move(this.options.slideSpeed, $target, function(){
$target.slideUp(_this.options.slideSpeed, function () {
/**
* Fires when the tab is done collapsing up.
* @event Accordion#up
*/
_this.$element.trigger('up.zf.accordion', [$target]);
});
// });
$target.attr('aria-hidden', true)
.parent().removeClass('is-active');
$(`#${$target.attr('aria-labelledby')}`).attr({
'aria-expanded': false,
'aria-selected': false
});
}
/**
* Destroys an instance of an accordion.
* @fires Accordion#destroyed
* @function
*/
destroy() {
this.$element.find('[data-tab-content]').stop(true).slideUp(0).css('display', '');
this.$element.find('a').off('.zf.accordion');
Foundation.unregisterPlugin(this);
}
}
Accordion.defaults = {
/**
* Amount of time to animate the opening of an accordion pane.
* @option
* @example 250
*/
slideSpeed: 250,
/**
* Allow the accordion to have multiple open panes.
* @option
* @example false
*/
multiExpand: false,
/**
* Allow the accordion to close all panes.
* @option
* @example false
*/
allowAllClosed: false
};
// Window exports
Foundation.plugin(Accordion, 'Accordion');
}(jQuery);