assets/javascripts/ui/ui.accordion.js
/*
* jQuery UI Accordion @VERSION
*
* Copyright (c) 2008 AUTHORS.txt (http://ui.jquery.com/about)
* Dual licensed under the MIT (MIT-LICENSE.txt)
* and GPL (GPL-LICENSE.txt) licenses.
*
* http://docs.jquery.com/UI/Accordion
*
* Depends:
* ui.core.js
*/
(function($) {
$.widget("ui.accordion", {
_init: function() {
var options = this.options;
if ( options.navigation ) {
var current = this.element.find("a").filter(options.navigationFilter);
if ( current.length ) {
if ( current.filter(options.header).length ) {
options.active = current;
} else {
options.active = current.parent().parent().prev();
current.addClass("current");
}
}
}
this.element.addClass("ui-accordion ui-widget ui-helper-reset");
var groups = this.element.children().addClass("ui-accordion-group");
var headers = options.headers = groups.find("> :first-child").addClass("ui-accordion-header ui-helper-reset ui-state-default ui-corner-all")
.bind("mouseenter.accordion", function(){ $(this).addClass('ui-state-hover'); })
.bind("mouseleave.accordion", function(){ $(this).removeClass('ui-state-hover'); });
// wrap content elements in div against animation issues
headers.next().wrap("<div></div>").addClass("ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom");
var active = options.active = findActive(headers, options.active).toggleClass("ui-state-default").toggleClass("ui-state-active").toggleClass("ui-corner-all").toggleClass("ui-corner-top");
active.parent().addClass("selected");
$("<span/>").addClass("ui-icon " + this.options.headerIcon).prependTo(headers);
active.find(".ui-icon").toggleClass(this.options.headerIcon).toggleClass(this.options.headerIconSelected);
// IE7-/Win - Extra vertical space in Lists fixed
if ($.browser.msie) {
this.element.find('a').css('zoom', '1');
}
var maxHeight;
if ( options.fillSpace ) {
maxHeight = this.element.parent().height();
options.headers.each(function() {
maxHeight -= $(this).outerHeight();
});
var maxPadding = 0;
options.headers.next().each(function() {
maxPadding = Math.max(maxPadding, $(this).innerHeight() - $(this).height());
}).height(maxHeight - maxPadding);
} else if ( options.autoHeight ) {
maxHeight = 0;
options.headers.next().each(function() {
maxHeight = Math.max(maxHeight, $(this).outerHeight());
}).height(maxHeight);
}
this.element.attr('role','tablist');
var self=this;
options.headers
.attr('role','tab')
.bind('keydown', function(event) { return self._keydown(event); })
.next()
.attr('role','tabpanel');
options.headers
.not(options.active || "")
.attr('aria-expanded','false')
.attr("tabIndex", "-1")
.next()
.hide();
// make sure at least one header is in the tab order
if (!options.active.length) {
options.headers.eq(0).attr('tabIndex','0');
} else {
options.active
.attr('aria-expanded','true')
.attr("tabIndex", "0");
}
// only need links in taborder for Safari
if (!$.browser.safari)
options.headers.find('a').attr('tabIndex','-1');
if (options.event) {
this.element.bind((options.event) + ".accordion", clickHandler);
}
},
destroy: function() {
this.element.removeClass("ui-accordion ui-widget ui-helper-reset").removeAttr("role").unbind(".accordion");
$.removeData(this.element[0], "accordion");
var groups = this.element.children().removeClass("ui-accordion-group selected");
var headers = this.options.headers.unbind(".accordion").removeClass("ui-accordion-header ui-helper-reset ui-state-default ui-corner-all ui-state-active ui-corner-top")
.removeAttr("role").removeAttr("aria-expanded").removeAttr("tabindex");
headers.find("a").removeAttr("tabindex");
headers.children(".ui-icon").remove();
headers.next().children().removeClass("ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom").each(function(){
$(this).parent().replaceWith(this);
})
},
_keydown: function(event) {
if (this.options.disabled || event.altKey || event.ctrlKey)
return;
var keyCode = $.ui.keyCode;
var length = this.options.headers.length;
var currentIndex = this.options.headers.index(event.target);
var toFocus = false;
switch(event.keyCode) {
case keyCode.RIGHT:
case keyCode.DOWN:
toFocus = this.options.headers[(currentIndex + 1) % length];
break;
case keyCode.LEFT:
case keyCode.UP:
toFocus = this.options.headers[(currentIndex - 1 + length) % length];
break;
case keyCode.SPACE:
case keyCode.ENTER:
return clickHandler.call(this.element[0], { target: event.target });
}
if (toFocus) {
$(event.target).attr('tabIndex','-1');
$(toFocus).attr('tabIndex','0');
toFocus.focus();
return false;
}
return true;
},
activate: function(index) {
// call clickHandler with custom event
clickHandler.call(this.element[0], {
target: findActive( this.options.headers, index )[0]
});
}
});
function scopeCallback(callback, scope) {
return function() {
return callback.apply(scope, arguments);
};
};
function completed(cancel) {
// if removed while animated data can be empty
if (!$.data(this, "accordion")) {
return;
}
var instance = $.data(this, "accordion");
var options = instance.options;
options.running = cancel ? 0 : --options.running;
if ( options.running ) {
return;
}
if ( options.clearStyle ) {
options.toShow.add(options.toHide).css({
height: "",
overflow: ""
});
}
instance._trigger('change', null, options.data);
}
function toggle(toShow, toHide, data, clickedActive, down) {
var options = $.data(this, "accordion").options;
options.toShow = toShow;
options.toHide = toHide;
options.data = data;
var complete = scopeCallback(completed, this);
$.data(this, "accordion")._trigger("changestart", null, options.data);
// count elements to animate
options.running = toHide.size() === 0 ? toShow.size() : toHide.size();
if ( options.animated ) {
var animOptions = {};
if ( !options.alwaysOpen && clickedActive ) {
animOptions = {
toShow: $([]),
toHide: toHide,
complete: complete,
down: down,
autoHeight: options.autoHeight
};
} else {
animOptions = {
toShow: toShow,
toHide: toHide,
complete: complete,
down: down,
autoHeight: options.autoHeight
};
}
if (!options.proxied) {
options.proxied = options.animated;
}
if (!options.proxiedDuration) {
options.proxiedDuration = options.duration;
}
options.animated = $.isFunction(options.proxied) ?
options.proxied(animOptions) : options.proxied;
options.duration = $.isFunction(options.proxiedDuration) ?
options.proxiedDuration(animOptions) : options.proxiedDuration;
var animations = $.ui.accordion.animations,
duration = options.duration,
easing = options.animated;
if (!animations[easing]) {
animations[easing] = function(options) {
this.slide(options, {
easing: easing,
duration: duration || 700
});
};
}
animations[easing](animOptions);
} else {
if ( !options.alwaysOpen && clickedActive ) {
toShow.toggle();
} else {
toHide.hide();
toShow.show();
}
complete(true);
}
toHide.prev().attr('aria-expanded','false').attr("tabIndex", "-1");
toShow.prev().attr('aria-expanded','true').attr("tabIndex", "0").focus();;
}
function clickHandler(event) {
var options = $.data(this, "accordion").options;
if (options.disabled) {
return false;
}
// called only when using activate(false) to close all parts programmatically
if ( !event.target && !options.alwaysOpen ) {
options.active.parent().toggleClass(options.selectedClass);
var toHide = options.active.next(),
data = {
options: options,
newHeader: $([]),
oldHeader: options.active,
newContent: $([]),
oldContent: toHide
},
toShow = (options.active = $([]));
toggle.call(this, toShow, toHide, data );
return false;
}
// get the click target
var clicked = $(event.target);
// due to the event delegation model, we have to check if one
// of the parent elements is our actual header, and find that
// otherwise stick with the initial target
clicked = $( clicked.parents(options.header)[0] || clicked );
var clickedActive = clicked[0] == options.active[0];
// if animations are still active, or the active header is the target, ignore click
if (options.running || (options.alwaysOpen && clickedActive)) {
return false;
}
if (!clicked.is(options.header)) {
return;
}
// switch classes
options.active.parent().toggleClass(options.selectedClass);
options.active.removeClass("ui-state-active ui-corner-top").addClass("ui-state-default ui-corner-all")
.find(".ui-icon").removeClass(options.headerIconSelected).addClass(options.headerIcon);
if ( !clickedActive ) {
clicked.parent().addClass(options.selectedClass);
clicked.removeClass("ui-state-default ui-corner-all").addClass("ui-state-active ui-corner-top")
.find(".ui-icon").removeClass(options.headerIcon).addClass(options.headerIconSelected);
}
// find elements to show and hide
var toShow = clicked.next(),
toHide = options.active.next(),
data = {
options: options,
newHeader: clickedActive && !options.alwaysOpen ? $([]) : clicked,
oldHeader: options.active,
newContent: clickedActive && !options.alwaysOpen ? $([]) : toShow,
oldContent: toHide
},
down = options.headers.index( options.active[0] ) > options.headers.index( clicked[0] );
options.active = clickedActive ? $([]) : clicked;
toggle.call(this, toShow, toHide, data, clickedActive, down );
return false;
};
function findActive(headers, selector) {
return selector
? typeof selector == "number"
? headers.filter(":eq(" + selector + ")")
: headers.not(headers.not(selector))
: selector === false
? $([])
: headers.filter(":eq(0)");
}
$.extend($.ui.accordion, {
version: "@VERSION",
defaults: {
autoHeight: true,
alwaysOpen: true,
animated: 'slide',
event: "click",
header: "a",
headerIcon: "ui-icon-triangle-1-e",
headerIconSelected: "ui-icon-triangle-1-s",
navigationFilter: function() {
return this.href.toLowerCase() == location.href.toLowerCase();
},
running: 0,
selectedClass: "selected"
},
animations: {
slide: function(options, additions) {
options = $.extend({
easing: "swing",
duration: 300
}, options, additions);
if ( !options.toHide.size() ) {
options.toShow.animate({height: "show"}, options);
return;
}
var hideHeight = options.toHide.height(),
showHeight = options.toShow.height(),
difference = showHeight / hideHeight,
overflow = options.toShow.css('overflow');
options.toShow.css({ height: 0, overflow: 'hidden' }).show();
options.toHide.filter(":hidden").each(options.complete).end().filter(":visible").animate({height:"hide"},{
step: function(now) {
var current = (hideHeight - now) * difference;
if ($.browser.msie || $.browser.opera) {
current = Math.ceil(current);
}
options.toShow.height( current );
},
duration: options.duration,
easing: options.easing,
complete: function() {
if ( !options.autoHeight ) {
options.toShow.css("height", "auto");
}
options.toShow.css({overflow: overflow});
options.complete();
}
});
},
bounceslide: function(options) {
this.slide(options, {
easing: options.down ? "easeOutBounce" : "swing",
duration: options.down ? 1000 : 200
});
},
easeslide: function(options) {
this.slide(options, {
easing: "easeinout",
duration: 700
});
}
}
});
})(jQuery);