jquery-ui/ui/ui.accordion.js

442 lines
11 KiB
JavaScript

/*
* jQuery UI Accordion @VERSION
*
* Copyright (c) 2009 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 o = this.options, self = this;
this.running = 0;
if ( o.navigation ) {
var current = this.element.find("a").filter(o.navigationFilter);
if ( current.length ) {
if ( current.filter(options.header).length ) {
this.active = current;
} else {
this.active = current.parent().parent().prev();
current.addClass("ui-accordion-current");
}
}
}
this.element.addClass("ui-accordion ui-widget ui-helper-reset");
this.groups = this.element.children().addClass("ui-accordion-group");
this.headers = this.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
this.headers
.next()
.wrap("<div></div>")
.addClass("ui-accordion-content")
.parent()
.addClass("ui-accordion-content-wrap ui-helper-reset ui-widget-content ui-corner-bottom");
this.active = this._findActive(this.active || o.active).toggleClass("ui-state-default").toggleClass("ui-state-active").toggleClass("ui-corner-all").toggleClass("ui-corner-top");
this.active.parent().addClass('ui-accordion-selected');
//Append icon elements
$("<span/>").addClass("ui-icon " + o.icons.header).prependTo(this.headers);
this.active.find(".ui-icon").toggleClass(o.icons.header).toggleClass(o.icons.headerSelected);
// IE7-/Win - Extra vertical space in lists fixed
if ($.browser.msie) {
this.element.find('a').css('zoom', '1');
}
this.resize();
//ARIA
this.element.attr('role','tablist');
this.headers
.attr('role','tab')
.bind('keydown', function(event) { return self._keydown(event); })
.next()
.attr('role','tabpanel');
this.headers
.not(this.active || "")
.attr('aria-expanded','false')
.attr("tabIndex", "-1")
.next()
.hide();
// make sure at least one header is in the tab order
if (!this.active.length) {
this.headers.eq(0).attr('tabIndex','0');
} else {
this.active
.attr('aria-expanded','true')
.attr('tabIndex', '0');
}
// only need links in taborder for Safari
if (!$.browser.safari)
this.headers.find('a').attr('tabIndex','-1');
if (o.event) {
this.element.bind((o.event) + ".accordion", function(event) { return self._clickHandler.call(self, event); });
}
},
destroy: function() {
this.element
.removeClass("ui-accordion ui-widget ui-helper-reset")
.removeAttr("role")
.unbind('.accordion')
.removeData('accordion');
this.element.children().removeClass("ui-accordion-group ui-accordion-selected");
this.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");
this.headers.find("a").removeAttr("tabindex");
this.headers.children(".ui-icon").remove();
this.headers.next().children().removeClass("ui-accordion-content").each(function() {
$(this).parent().replaceWith(this);
});
},
_keydown: function(event) {
var o = this.options, keyCode = $.ui.keyCode;
if (o.disabled || event.altKey || event.ctrlKey)
return;
var length = this.headers.length;
var currentIndex = this.headers.index(event.target);
var toFocus = false;
switch(event.keyCode) {
case keyCode.RIGHT:
case keyCode.DOWN:
toFocus = this.headers[(currentIndex + 1) % length];
break;
case keyCode.LEFT:
case keyCode.UP:
toFocus = this.headers[(currentIndex - 1 + length) % length];
break;
case keyCode.SPACE:
case keyCode.ENTER:
return this._clickHandler({ target: event.target });
}
if (toFocus) {
$(event.target).attr('tabIndex','-1');
$(toFocus).attr('tabIndex','0');
toFocus.focus();
return false;
}
return true;
},
resize: function() {
var o = this.options, maxHeight;
if (o.fillSpace) {
maxHeight = this.element.parent().height();
this.headers.each(function() {
maxHeight -= $(this).outerHeight();
});
var maxPadding = 0;
this.headers.next().each(function() {
maxPadding = Math.max(maxPadding, $(this).innerHeight() - $(this).height());
}).height(maxHeight - maxPadding)
.css('overflow', 'auto');
} else if ( o.autoHeight ) {
maxHeight = 0;
this.headers.next().each(function() {
maxHeight = Math.max(maxHeight, $(this).outerHeight());
}).height(maxHeight);
}
},
activate: function(index) {
// call clickHandler with custom event
this._clickHandler({ target: this._findActive(index)[0] });
},
_findActive: function(selector) {
return selector
? typeof selector == "number"
? this.headers.filter(":eq(" + selector + ")")
: this.headers.not(this.headers.not(selector))
: selector === false
? $([])
: this.headers.filter(":eq(0)");
},
_clickHandler: function(event) {
var o = this.options;
if (o.disabled) return false;
// called only when using activate(false) to close all parts programmatically
if (!event.target && !o.alwaysOpen) {
this.active.parent().toggleClass('ui-accordion-selected');
this.active.removeClass("ui-state-active ui-corner-top").addClass("ui-state-default ui-corner-all")
.find(".ui-icon").removeClass(o.icons.headerSelected).addClass(o.icons.header);
var toHide = this.active.next(),
data = {
options: o,
newHeader: $([]),
oldHeader: o.active,
newContent: $([]),
oldContent: toHide
},
toShow = (this.active = $([]));
this._toggle(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(o.header)[0] || clicked );
var clickedIsActive = clicked[0] == this.active[0];
// if animations are still active, or the active header is the target, ignore click
if (this.running || (o.alwaysOpen && clickedIsActive)) {
return false;
}
if (!clicked.is(o.header)) {
return;
}
// switch classes
this.active.parent().toggleClass('ui-accordion-selected');
this.active.removeClass("ui-state-active ui-corner-top").addClass("ui-state-default ui-corner-all")
.find(".ui-icon").removeClass(o.icons.headerSelected).addClass(o.icons.header);
if (!clickedIsActive) {
clicked.parent().addClass('ui-accordion-selected');
clicked.removeClass("ui-state-default ui-corner-all").addClass("ui-state-active ui-corner-top")
.find(".ui-icon").removeClass(o.icons.header).addClass(o.icons.headerSelected);
}
// find elements to show and hide
var toShow = clicked.next(),
toHide = this.active.next(),
data = {
options: o,
newHeader: clickedIsActive && !o.alwaysOpen ? $([]) : clicked,
oldHeader: this.active,
newContent: clickedIsActive && !o.alwaysOpen ? $([]) : toShow,
oldContent: toHide
},
down = this.headers.index( this.active[0] ) > this.headers.index( clicked[0] );
this.active = clickedIsActive ? $([]) : clicked;
this._toggle(toShow, toHide, data, clickedIsActive, down);
return false;
},
_toggle: function(toShow, toHide, data, clickedIsActive, down) {
var o = this.options, self = this;
this.toShow = toShow;
this.toHide = toHide;
this.data = data;
var complete = function() { if(!self) return; return self._completed.apply(self, arguments); };
// trigger changestart event
this._trigger("changestart", null, this.data);
// count elements to animate
this.running = toHide.size() === 0 ? toShow.size() : toHide.size();
if (o.animated) {
var animOptions = {};
if ( !o.alwaysOpen && clickedIsActive ) {
animOptions = {
toShow: $([]),
toHide: toHide,
complete: complete,
down: down,
autoHeight: o.autoHeight || o.fillSpace
};
} else {
animOptions = {
toShow: toShow,
toHide: toHide,
complete: complete,
down: down,
autoHeight: o.autoHeight || o.fillSpace
};
}
if (!o.proxied) {
o.proxied = o.animated;
}
if (!o.proxiedDuration) {
o.proxiedDuration = o.duration;
}
o.animated = $.isFunction(o.proxied) ?
o.proxied(animOptions) : o.proxied;
o.duration = $.isFunction(o.proxiedDuration) ?
o.proxiedDuration(animOptions) : o.proxiedDuration;
var animations = $.ui.accordion.animations,
duration = o.duration,
easing = o.animated;
if (!animations[easing]) {
animations[easing] = function(options) {
this.slide(options, {
easing: easing,
duration: duration || 700
});
};
}
animations[easing](animOptions);
} else {
if (!o.alwaysOpen && clickedIsActive) {
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();
},
_completed: function(cancel) {
var o = this.options;
this.running = cancel ? 0 : --this.running;
if (this.running) return;
if (o.clearStyle) {
o.toShow.add(o.toHide).css({
height: "",
overflow: ""
});
}
this._trigger('change', null, this.data);
}
});
$.extend($.ui.accordion, {
version: "@VERSION",
defaults: {
active: false,
autoHeight: true,
alwaysOpen: true,
animated: 'slide',
clearStyle: false,
event: "click",
fillSpace: false,
header: "a",
icons: {
header: "ui-icon-triangle-1-e",
headerSelected: "ui-icon-triangle-1-s"
},
navigation: false,
navigationFilter: function() {
return this.href.toLowerCase() == location.href.toLowerCase();
}
},
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);