/**
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* @author Roger Wu
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*/
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(function($) {
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var jmenus = new Map();
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// If the DWZ scope is not available, add it
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$.dwz = $.dwz || {};
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$(window).resize(function(){
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setTimeout(function(){
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for (var i=0; i<jmenus.size();i++){
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fillSpace(jmenus.element(i).key);
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}
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}, 100);
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});
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$.fn.extend({
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accordion: function(options, data) {
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var args = Array.prototype.slice.call(arguments, 1);
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return this.each(function() {
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if (options.fillSpace) jmenus.put(options.fillSpace, this);
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if (typeof options == "string") {
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var accordion = $.data(this, "dwz-accordion");
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accordion[options].apply(accordion, args);
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// INIT with optional options
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} else if (!$(this).is(".dwz-accordion"))
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$.data(this, "dwz-accordion", new $.dwz.accordion(this, options));
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});
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},
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/**
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* deprecated, use accordion("activate", index) instead
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* @param {Object} index
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*/
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activate: function(index) {
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return this.accordion("activate", index);
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//alert(this.accordion("activate", index));
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}
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});
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$.dwz.accordion = function(container, options) {
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// setup configuration
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this.options = options = $.extend({}, $.dwz.accordion.defaults, options);
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this.element = container;
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$(container).addClass("dwz-accordion");
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if ( options.navigation ) {
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var current = $(container).find("a").filter(options.navigationFilter);
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if ( current.length ) {
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if ( current.filter(options.header).length ) {
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options.active = current;
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} else {
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options.active = current.parent().parent().prev();
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current.addClass("current");
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}
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}
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}
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// calculate active if not specified, using the first header
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options.headers = $(container).find(options.header);
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options.active = findActive(options.headers, options.active);
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if ( options.fillSpace ) {
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fillSpace(options.fillSpace);
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} else if ( options.autoheight ) {
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var maxHeight = 0;
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options.headers.next().each(function() {
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maxHeight = Math.max(maxHeight, $(this).outerHeight());
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}).height(maxHeight);
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}
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options.headers
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.not(options.active || "")
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.next()
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.hide();
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options.active.find("h2").addClass(options.selectedClass);
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if (options.event)
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$(container).bind((options.event) + ".dwz-accordion", clickHandler);
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};
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$.dwz.accordion.prototype = {
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activate: function(index) {
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// call clickHandler with custom event
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clickHandler.call(this.element, {
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target: findActive( this.options.headers, index )[0]
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});
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},
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enable: function() {
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this.options.disabled = false;
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},
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disable: function() {
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this.options.disabled = true;
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},
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destroy: function() {
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this.options.headers.next().css("display", "");
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if ( this.options.fillSpace || this.options.autoheight ) {
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this.options.headers.next().css("height", "");
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}
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$.removeData(this.element, "dwz-accordion");
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$(this.element).removeClass("dwz-accordion").unbind(".dwz-accordion");
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}
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}
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function scopeCallback(callback, scope) {
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return function() {
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return callback.apply(scope, arguments);
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};
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}
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function completed(cancel) {
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// if removed while animated data can be empty
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if (!$.data(this, "dwz-accordion"))
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return;
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var instance = $.data(this, "dwz-accordion");
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var options = instance.options;
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options.running = cancel ? 0 : --options.running;
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if ( options.running )
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return;
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if ( options.clearStyle ) {
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options.toShow.add(options.toHide).css({
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height: "",
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overflow: ""
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});
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}
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$(this).triggerHandler("change.dwz-accordion", [options.data], options.change);
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}
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function fillSpace(key){
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var obj = jmenus.get(key);
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if (!obj) return;
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var parent = $(obj).parent();
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var height = parent.height() - (($(".accordionHeader", obj).size()) * ($(".accordionHeader:first-child", obj).outerHeight())) -2;
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var os = parent.children().not(obj);
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$.each(os, function(i){
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height -= $(os[i]).outerHeight();
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});
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$(".accordionContent",obj).height(height);
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}
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function toggle(toShow, toHide, data, clickedActive, down) {
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var options = $.data(this, "dwz-accordion").options;
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options.toShow = toShow;
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options.toHide = toHide;
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options.data = data;
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var complete = scopeCallback(completed, this);
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// count elements to animate
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options.running = toHide.size() == 0 ? toShow.size() : toHide.size();
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if ( options.animated ) {
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if ( !options.alwaysOpen && clickedActive ) {
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$.dwz.accordion.animations[options.animated]({
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toShow: jQuery([]),
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toHide: toHide,
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complete: complete,
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down: down,
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autoheight: options.autoheight
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});
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} else {
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$.dwz.accordion.animations[options.animated]({
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toShow: toShow,
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toHide: toHide,
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complete: complete,
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down: down,
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autoheight: options.autoheight
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});
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}
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} else {
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if ( !options.alwaysOpen && clickedActive ) {
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toShow.toggle();
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} else {
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toHide.hide();
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toShow.show();
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}
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complete(true);
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}
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}
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function clickHandler(event) {
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var options = $.data(this, "dwz-accordion").options;
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if (options.disabled)
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return false;
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// called only when using activate(false) to close all parts programmatically
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if ( !event.target && !options.alwaysOpen ) {
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options.active.find("h2").toggleClass(options.selectedClass);
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var toHide = options.active.next(),
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data = {
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instance: this,
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options: options,
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newHeader: jQuery([]),
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oldHeader: options.active,
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newContent: jQuery([]),
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oldContent: toHide
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},
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toShow = options.active = $([]);
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toggle.call(this, toShow, toHide, data );
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return false;
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}
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// get the click target
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var clicked = $(event.target);
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// due to the event delegation model, we have to check if one
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// of the parent elements is our actual header, and find that
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if ( clicked.parents(options.header).length )
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while ( !clicked.is(options.header) )
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clicked = clicked.parent();
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var clickedActive = clicked[0] == options.active[0];
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// if animations are still active, or the active header is the target, ignore click
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if (options.running || (options.alwaysOpen && clickedActive))
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return false;
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if (!clicked.is(options.header))
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return;
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// switch classes
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options.active.find("h2").toggleClass(options.selectedClass);
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if ( !clickedActive ) {
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clicked.find("h2").addClass(options.selectedClass);
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}
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// find elements to show and hide
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var toShow = clicked.next(),
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toHide = options.active.next(),
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//data = [clicked, options.active, toShow, toHide],
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data = {
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instance: this,
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options: options,
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newHeader: clicked,
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oldHeader: options.active,
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newContent: toShow,
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oldContent: toHide
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},
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down = options.headers.index( options.active[0] ) > options.headers.index( clicked[0] );
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options.active = clickedActive ? $([]) : clicked;
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toggle.call(this, toShow, toHide, data, clickedActive, down );
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return false;
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};
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function findActive(headers, selector) {
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return selector != undefined
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? typeof selector == "number"
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? headers.filter(":eq(" + selector + ")")
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: headers.not(headers.not(selector))
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: selector === false
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? $([])
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: headers.filter(":eq(0)");
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}
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$.extend($.dwz.accordion, {
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defaults: {
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selectedClass: "collapsable",
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alwaysOpen: true,
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animated: 'slide',
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event: "click",
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header: ".accordionHeader",
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autoheight: true,
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running: 0,
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navigationFilter: function() {
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return this.href.toLowerCase() == location.href.toLowerCase();
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}
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},
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animations: {
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slide: function(options, additions) {
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options = $.extend({
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easing: "swing",
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duration: 300
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}, options, additions);
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if ( !options.toHide.size() ) {
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options.toShow.animate({height: "show"}, options);
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return;
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}
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var hideHeight = options.toHide.height(),
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showHeight = options.toShow.height(),
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difference = showHeight / hideHeight;
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options.toShow.css({ height: 0}).show();
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options.toHide.filter(":hidden").each(options.complete).end().filter(":visible").animate({height:"hide"},{
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step: function(now) {
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var current = (hideHeight - now) * difference;
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if ($.browser.msie || $.browser.opera) {
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current = Math.ceil(current);
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}
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options.toShow.height( current );
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},
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duration: options.duration,
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easing: options.easing,
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complete: function() {
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if ( !options.autoheight ) {
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options.toShow.css({height:"auto"});
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}
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options.toShow.css({overflow:"auto"});
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options.complete();
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}
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});
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},
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bounceslide: function(options) {
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this.slide(options, {
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easing: options.down ? "bounceout" : "swing",
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duration: options.down ? 1000 : 200
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});
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},
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easeslide: function(options) {
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this.slide(options, {
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easing: "easeinout",
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duration: 700
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})
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}
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}
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});
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})(jQuery);
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