/*
 * jQuery UI Accordion 1.6
 * 
 * Copyright (c) 2007 Jörn Zaefferer
 *
 * http://docs.jquery.com/UI/Accordion
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 *
 * Revision: $Id: jquery.accordion.js 4876 2008-03-08 11:49:04Z joern.zaefferer $
 *
 */

;(function($) {

        // If the UI scope is not available, add it
        $.ui = $.ui || {};

        $.fn.extend({
            accordion: function(options, data) {
                var args = Array.prototype.slice.call(arguments, 1);

                return this.each(function() {
                    if (typeof options == "string") {
                        var accordion = $.data(this, "ui-accordion");
                        accordion[options].apply(accordion, args);
                        // INIT with optional options
                    } else if (!$(this).is(".ui-accordion"))
                        $.data(this, "ui-accordion", new $.ui.accordion(this, options));
                });
            },
            // deprecated, use accordion("activate", index) instead
            activate: function(index) {
                return this.accordion("activate", index);
            }
        });

        $.ui.accordion = function(container, options) {

            // setup configuration
            this.options = options = $.extend({}, $.ui.accordion.defaults, options);
            this.element = container;

            $(container).addClass("ui-accordion");

            if (options.navigation) {
                var current = $(container).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");
                    }
                }
            }

            // calculate active if not specified, using the first header
            options.headers = $(container).find(options.header);
            options.active = findActive(options.headers, options.active);

            if (options.fillSpace) {
                var maxHeight = $(container).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) {
                var maxHeight = 0;
                options.headers.next().each(function() {
                    maxHeight = Math.max(maxHeight, $(this).outerHeight());
                }).height(maxHeight);
            }

            options.headers
		.not(options.active || "")
		.next()
		.hide();
            options.active.parent().andSelf().addClass(options.selectedClass);

            if (options.event)
                $(container).bind((options.event) + ".ui-accordion", clickHandler);
        };

        $.ui.accordion.prototype = {
            activate: function(index) {
                // call clickHandler with custom event
                clickHandler.call(this.element, {
                    target: findActive(this.options.headers, index)[0]
                });
            },

            enable: function() {
                this.options.disabled = false;
            },
            disable: function() {
                this.options.disabled = true;
            },
            destroy: function() {
                this.options.headers.next().css("display", "");
                if (this.options.fillSpace || this.options.autoheight) {
                    this.options.headers.next().css("height", "");
                }
                $.removeData(this.element, "ui-accordion");
                $(this.element).removeClass("ui-accordion").unbind(".ui-accordion");
            }
        }

        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, "ui-accordion"))
                return;
            var instance = $.data(this, "ui-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: ""
                });
            }
            $(this).triggerHandler("change.ui-accordion", [options.data], options.change);
        }

        function toggle(toShow, toHide, data, clickedActive, down) {
            var options = $.data(this, "ui-accordion").options;
            options.toShow = toShow;
            options.toHide = toHide;
            options.data = data;
            var complete = scopeCallback(completed, this);

            // count elements to animate
            options.running = toHide.size() == 0 ? toShow.size() : toHide.size();

            if (options.animated) {
                if (!options.alwaysOpen && clickedActive) {
                    $.ui.accordion.animations[options.animated]({
                        toShow: jQuery([]),
                        toHide: toHide,
                        complete: complete,
                        down: down,
                        autoheight: options.autoheight
                    });
                } else {
                    $.ui.accordion.animations[options.animated]({
                        toShow: toShow,
                        toHide: toHide,
                        complete: complete,
                        down: down,
                        autoheight: options.autoheight
                    });
                }
            } else {
                if (!options.alwaysOpen && clickedActive) {
                    toShow.toggle();
                } else {
                    toHide.hide();
                    toShow.show();
                }
                complete(true);
            }
        }

        function clickHandler(event) {
            var options = $.data(this, "ui-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().andSelf().toggleClass(options.selectedClass);
                var toHide = options.active.next(),
			data = {
                    instance: this,
                    options: options,
                    newHeader: jQuery([]),
                    oldHeader: options.active,
                    newContent: jQuery([]),
                    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
            if (clicked.parents(options.header).length)
                while (!clicked.is(options.header))
                clicked = clicked.parent();

            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().andSelf().toggleClass(options.selectedClass);
            if (!clickedActive) {
                clicked.parent().andSelf().addClass(options.selectedClass);
            }

            // find elements to show and hide
            var toShow = clicked.next(),
		toHide = options.active.next(),
            //data = [clicked, options.active, toShow, toHide],
		data = {
                instance: this,
                options: options,
                newHeader: clicked,
                oldHeader: options.active,
                newContent: 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 != undefined
		? typeof selector == "number"
			? headers.filter(":eq(" + selector + ")")
			: headers.not(headers.not(selector))
		: selector === false
			? $([])
			: headers.filter(":eq(0)");
        }

        $.extend($.ui.accordion, {
            defaults: {
                selectedClass: "selected",
                alwaysOpen: true,
                animated: 'slide',
                event: "click",
                header: "a",
                autoheight: true,
                running: 0,
                navigationFilter: function() {
                    //ALTERADO PARA FUNCIONAR ENTRE DIFERENTES PÁGINAS
                    //return this.href.toLowerCase() == location.href.toLowerCase();
                    return $(this).getUrlParam("p") == $(document).getUrlParam("p");
                }
            },
            animations: {
                slide: function(options, additions) {
                    options = $.extend({
                        easing: "swing",
                        duration: 300
                    }, options, additions);
                    if (!options.toHide.size()) {
                        options.toShow.animate({ height: "show" }, options);
                        return;
                    }
                    var hideHeight = options.toHide.height(),
				showHeight = options.toShow.height(),
				difference = showHeight / hideHeight;
                    options.toShow.css({ height: 0, overflow: 'hidden' }).show();
                    options.toHide.filter(":hidden").each(options.complete).end().filter(":visible").animate({ height: "hide" }, {
                        step: function(now) {
                            var current = (hideHeight - now) * difference;
                            if ($.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.complete();
                        }
                    });
                },
                bounceslide: function(options) {
                    this.slide(options, {
                        easing: options.down ? "bounceout" : "swing",
                        duration: options.down ? 1000 : 200
                    });
                },
                easeslide: function(options) {
                    this.slide(options, {
                        easing: "easeinout",
                        duration: 700
                    })
                }
            }
        });

    })(jQuery);