/*
---

script: mootools.slideGallery.js

description: Multifunctional slide carousel for MooTools.

license: MIT-style license

authors:
- Sergii Kashcheiev

requires:
- core/1.2.4: Fx.Tween
- core/1.2.4: Fx.Transitions

provides: [slideGallery, fadeGallery]

...
*/
var slideGallery = new Class({
    Version: "1.2.3",
    Implements: [Options],
    options: {
        holder: ".holder",
        elementsParent: "ul",
        elements: "li",
        nextItem: ".next",
        prevItem: ".prev",
        stop: ".stop",
        start: ".start",
        speed: 600,
        duration: 4000,
        steps: 1,
        current: 0,
        transition: Fx.Transitions.linear,
        direction: "horizontal",
        mode: "callback",
        disableClass: "disable",
        currentClass: "current",
        random: false,
        paging: false,
        autoplay: true,
        autoplayOpposite: false,
        onStart: function(current, visible, length) {},
        onPlay: function(current, visible, length) {}
    },
    initialize: function(gallery, options) {
        this.gallery = gallery;
        this.setOptions(options);
        this.holder = this.gallery.getElement(this.options.holder);
        this.itemsParent = this.holder.getElement(this.options.elementsParent);
        this.items = this.itemsParent.getElements(this.options.elements);
        this.next = this.gallery.getElement(this.options.nextItem);
        this.prev = this.gallery.getElement(this.options.prevItem);
        this.stop = this.gallery.getElement(this.options.stop);
        this.start = this.gallery.getElement(this.options.start);
        this.current = this.options.current;
        this.bound = {
            rotate: this.rotate.bind(this)
        }

		if (this.items.length == 1 ) {
			this.items[0].set('opacity', 1);
			this.items[0].set('visibility', 'visible');
		}

        if (this.options.direction == "horizontal") {
            this.direction = "margin-left";
            this.size = this.items[0].getWidth();
            this.visible = Math.round(this.holder.getWidth() / this.size);
        }
        else {
            this.direction = "margin-top";
            this.size = this.items[0].getHeight();
            this.visible = Math.round(this.holder.getHeight() / this.size);
        }

        if (this.next == null) this.next = new Element("a").injectInside(this.gallery);
        if (this.prev == null) this.prev = new Element("a").injectInside(this.gallery);
        this.next.cl = this.next.className;
        this.prev.cl = this.prev.className;

        if (this.visible < this.items.length) {
            if (this.options.random) {
                Array.prototype.shuffle = function(b) {
                    var i = this.length,
                    j,
                    t;
                    while (i) {
                        j = Math.floor((i--) * Math.random());
                        t = b && typeof this[i].shuffle !== "undefined" ? this[i].shuffle() : this[i];
                        this[i] = this[j];
                        this[j] = t;
                    }
                    return this;
                };
                this.items.shuffle(this.items);
                this.hidden = new Element("div");
                this.items.each(function(el, i) {
                    this.wrap = new Element("div").adopt(el);
                    this.hidden.set("html", this.hidden.get("html"), this.wrap.get("html"));
                }.bind(this));
                this.itemsParent.set("html", this.hidden.get("html"));
                this.items = this.itemsParent.getElements(this.options.elements);
            }

            this.options.steps = this.options.steps > this.visible ? this.visible: this.options.steps;
            this.options.duration = this.options.duration < 1000 ? 1000: this.options.duration;
            this.options.speed = this.options.speed > 6000 ? 6000: this.options.speed;

            for (var i = 0; i < this.items.length; i++) {
                if (this.items[i].hasClass(this.options.currentClass)) this.current = i;
            }
            if (this.options.mode != "circle") {
                if (this.visible + this.current >= this.items.length) {
                    this.margin = (this.items.length - this.visible) * this.size;
                    this.current = this.items.length - this.visible;
                }
                else this.margin = this.current * this.size;

                if (this.options.paging) {
                    this.paging = new Element("ul").injectInside(this.gallery).addClass("paging");
                    for (var i = 0; i < Math.ceil((this.items.length - this.visible) / this.options.steps) + 1; i++) {
                        this.paging.innerHTML += '<li><a href="#">' + parseInt(i + 1) + '</a></li>';
                    }
                    this.paging = this.paging.getElements("a");
                    this.paging.each(function(el, i) {
                        el.addEvent("click",
                        function() {
                            if (i * this.options.steps + this.visible >= this.items.length) {
                                this.margin = (this.items.length - this.visible) * this.size;
                                this.current = this.items.length - this.visible;
                            }
                            else this.current = i * this.options.steps;
                            this.margin = this.current * this.size;

                            this.play(this.options.speed);
                            return false;
                        }.bind(this));
                    }.bind(this));
                }
                this.play(0);
            }
            else {
                for (; this.items.length < this.options.steps + this.visible;) {
                    this.items.clone().inject(this.itemsParent, "bottom");
                    this.items = this.itemsParent.getElements(this.options.elements);
                }
                if (this.current > this.items.length - 1) this.current = this.items.length - 1;
                if (this.current < 0) this.current = 0;
                for (var i = 0; i < this.current; i++) {
                    this.items[i].inject(this.itemsParent, "bottom");
                }
                this.options.paging = false;
            }

            this.next.addEvent("click",
            function() {
                if (this.options.mode != "circle") {
                    if (this.visible + this.current >= this.items.length) {
                        if (this.options.mode == "callback") {
                            this.margin = 0;
                            this.current = 0;
                        }
                    }
                    else if (this.visible + this.current + this.options.steps >= this.items.length) {
                        this.margin = (this.items.length - this.visible) * this.size;
                        this.current = this.items.length - this.visible;
                    }
                    else {
                        this.current = this.current + this.options.steps;
                        this.margin = this.current * this.size;
                    }
                    this.play(this.options.speed);
                }
                else {
                    var _this = this;
                    this.margin = this.size * this.options.steps;
                    this.itemsParent.set("tween", {
                        duration: this.options.speed,
                        transition: this.options.transition,
                        property: this.direction,
                        onComplete: function() {
                            for (var i = 0; i < _this.options.steps; i++) {
                                if (_this.current >= _this.items.length) _this.current = 0;
                                _this.current++;
                                _this.items[_this.current - 1].inject(_this.itemsParent, "bottom");
                            }
                            this.set(0);
                            _this.options.onPlay(_this.current, _this.visible, _this.items.length);
                        },
                        onCancel: function() {
                            this.onComplete();
                        }
                    });
                    this.itemsParent.tween( - this.margin);
                }
                return false;
            }.bind(this));

            this.prev.addEvent("click",
            function() {
                if (this.options.mode != "circle") {
                    if (this.current <= 0) {
                        if (this.options.mode == "callback") {
                            this.margin = (this.items.length - this.visible) * this.size;
                            this.current = this.items.length - this.visible;
                        }
                    }
                    else if (this.current - this.options.steps <= 0) {
                        this.margin = 0;
                        this.current = 0;
                    }
                    else {
                        this.current = this.current - this.options.steps;
                        this.margin = this.current * this.size;
                    }
                    this.play(this.options.speed);
                }
                else {
                    for (var i = 0; i < this.options.steps; i++) {
                        if (this.current - 1 < 0) this.current = this.items.length;
                        --this.current;
                        this.items[this.current].inject(this.itemsParent, "top");
                    }
                    this.itemsParent.setStyle(this.direction, -this.size * this.options.steps + "px");
                    this.margin = 0;
                    this.play(this.options.speed);
                }
                return false;
            }.bind(this));

            if (this.options.autoplay || this.start || this.stop) {
                if (!this.options.autoplay) this.gallery.addClass("stopped");
                this.timer = this.bound.rotate.delay(this.options.duration);
                this.gallery.addEvent("mouseenter",
                function() {
                    this.options.autoplay = false;
                    $clear(this.timer);
                }.bind(this));
                this.gallery.addEvent("mouseleave",
                function() {
                    if (!this.gallery.hasClass("stopped")) {
                        $clear(this.timer);
                        this.options.autoplay = true;
                        this.timer = this.bound.rotate.delay(this.options.duration);
                    }
                }.bind(this));
            }
            if (this.stop) {
                this.stop.addEvent("click",
                function() {
                    this.gallery.addClass("stopped").fireEvent("mouseenter");
                    return false;
                }.bind(this));
            }
            if (this.start) {
                this.start.addEvent("click",
                function() {
                    this.gallery.removeClass("stopped").fireEvent("mouseenter");
                    return false;
                }.bind(this));
            }
        }
        else {
            this.next.addClass(this.next.cl + "-" + this.options.disableClass);
            this.prev.addClass(this.prev.cl + "-" + this.options.disableClass);
            this.next.addEvent("click",
            function() {
                return false;
            }.bind(this));
            this.prev.addEvent("click",
            function() {
                return false;
            }.bind(this));
            if (this.stop) this.stop.addEvent("click",
            function() {
                return false;
            }.bind(this));
            if (this.start) this.start.addEvent("click",
            function() {
                return false;
            }.bind(this));
            this.gallery.addClass("stopped");
        }
        this.options.onStart(this.current, this.visible, this.items.length);
    },
    play: function(speed) {
        this.sidesChecking();
        this.itemsParent.set("tween", {
            duration: speed,
            transition: this.options.transition
        });
        this.itemsParent.tween(this.direction, -this.margin);
        if (this.options.paging) {
            this.paging.removeClass("active");
            this.paging[Math.ceil(this.current / this.options.steps)].addClass("active");
        }
        this.options.onPlay(this.current, this.visible, this.items.length);
    },
    rotate: function() {
        if (this.options.autoplay) {
            if (!this.options.autoplayOpposite) this.next.fireEvent("click");
            else this.prev.fireEvent("click");
            this.timer = this.bound.rotate.delay(this.options.duration);
        }
    },
    sidesChecking: function() {
        if (this.options.mode == "line") {
            this.next.removeClass(this.next.cl + "-" + this.options.disableClass);
            this.prev.removeClass(this.prev.cl + "-" + this.options.disableClass);
            if (this.visible + this.current >= this.items.length) this.next.addClass(this.next.cl + "-" + this.options.disableClass);
            else if (this.current == 0) this.prev.addClass(this.prev.cl + "-" + this.options.disableClass);
        }
    }
});
var fadeGallery = new Class({
    Extends: slideGallery,
    initialize: function(gallery, options) {
        this.previous = null;
        if (options.mode == "circle") options.mode = "callback";
        options.steps = 1;
        this.parent(gallery, options);
        this.visible = 1;
    },
    play: function(speed) {
        if (this.previous == null) this.previous = this.items;
        this.sidesChecking();
        this.previous.set("tween", {
            duration: speed,
            transition: this.options.transition
        });
        this.previous.tween("opacity", 0);
        this.items[this.current].set("tween", {
            duration: speed,
            transition: this.options.transition
        });
        this.items[this.current].tween("opacity", 1);
        if (this.options.paging) {
            this.paging.removeClass("active");
            this.paging[Math.ceil(this.current / this.options.steps)].addClass("active");
        }
        this.previous = this.items[this.current];
        this.options.onPlay(this.current, this.visible, this.items.length);
    }
});