/**************************************************************

	Script		: Lightbox
	Version		: 1.5
	Authors		: Samuel Birch
	Desc		: Extended version of Slimbox
	Licence		: Open Source MIT Licence

**************************************************************/

function showCategory(id){
    Lightbox.click(document.getElementById(id));
}

var Lightbox = {

    init: function(options) {
        this.options = Object.extend({
            resizeDuration: 400,
            resizeTransition: Fx.Transitions.sineInOut,
            initialWidth: 570,
            initialHeight: 250,
            animateCaption: { In: true, Out: true },
            container: document.body,
            showControls: false,
            showNumbers: true,
            descriptions: false,
            opacity: 0.8
        }, options || {});

        this.anchors = [];
        $each(document.links, function(el) {
            if (el.rel && el.rel.test(/^lightbox/i)) {
                el.onclick = this.click.pass(el, this);
                this.anchors.push(el);
            }
        }, this);
        this.listingId = '';
        this.imageType = '';
        this.eventKeyDown = this.keyboardListener.bindAsEventListener(this);
        this.eventPosition = this.position.bind(this);

        this.overlay = new Element('div').setProperty('id', 'lbOverlay').injectInside(this.options.container);

        this.center = new Element('div').setProperty('id', 'lbCenter').setStyles({ width: this.options.initialWidth + 'px', height: this.options.initialHeight + 'px', marginLeft: '-' + (this.options.initialWidth / 2) + 'px', display: 'none', marginTop: 0 + 'px' }).injectInside(this.options.container);
        this.image = new Element('div').setProperty('id', 'lbImage').injectInside(this.center);

        this.bottomContainer = new Element('div').setProperty('id', 'lbBottomContainer').setStyle('display', 'none').injectInside(this.options.container);
        this.bottom = new Element('div').setProperty('id', 'lbBottom').injectInside(this.bottomContainer);

        if (this.options.showControls) {
            this.controlDiv = new Element('div').setProperty('id', 'lbControls').injectInside(this.bottom);
        } else {
            this.controlDiv = this.image;
        }
        this.prevLink = new Element('a').setProperties({ id: 'lbPrevLink', href: '#' }).setStyle('display', 'none').injectInside(this.controlDiv);
        this.nextLink = this.prevLink.clone().setProperty('id', 'lbNextLink').injectInside(this.controlDiv);
        this.prevLink.onclick = this.previous.bind(this);
        this.nextLink.onclick = this.next.bind(this);



        this.caption = new Element('div').setProperty('id', 'lbCaption').injectInside(this.bottom);
        if (this.options.descriptions != false) {
            this.options.descriptions = $$(this.options.descriptions);
            this.description = new Element('div').setProperty('id', 'lbDescription').injectInside(this.bottom);
        }
        if (this.options.showNumbers) {
            this.number = new Element('div').setProperty('id', 'lbNumber').injectInside(this.bottom);
        }
        new Element('div').setStyle('clear', 'both').injectInside(this.bottom);

        var nextEffect = this.nextEffect.bind(this);
        this.fx = {
            overlay: this.overlay.effect('opacity', { duration: 500 }).hide(),
            resize: this.center.effects({ duration: this.options.resizeDuration, transition: this.options.resizeTransition, onComplete: nextEffect }),
            image: this.image.effect('opacity', { duration: 500, onComplete: nextEffect }),
            bottom: this.bottom.effect('margin-top', { duration: 400, onComplete: nextEffect })
        };

        this.preloadPrev = new Image();
        this.preloadNext = new Image();
        this.closeButton = new Element('a').setProperties({ id: 'lbCloseLink', href: '#' }).injectInside(this.bottom)
        this.closeButton.onclick = this.overlay.onclick = this.close.bind(this);
    },

    getListingId: function(linkRel) {
        var id = '';
        for (i = 12; i < linkRel.length; i++) {
            var char = linkRel[i];
            if (char != ']' && char != 'c') {
                id = id + char;
            } else {
                break;
            }
        }
        this.listingId = id;
        return id;
    },

    click: function(link) {
        if (link.rel.match('ads') != null) {
            track('AD_CLICK', this.getListingId(link.rel), 'RESULTS_PAGE');
            this.imageType = 'ads';
        } else {
            track('MENU_CLICK', this.getListingId(link.rel), 'RESULTS_PAGE');
            this.imageType = 'menu';
        }
        this.options.descriptions.each(function(el, i) {
            if (el.hasClass(link.id)) {
                this.linkLoc = i;
            }
        }, this);

        if (link.rel.length == 8) {
            return this.show(link.href, link.title);
        }

        var j, imageNum, images = [];
        this.anchors.each(function(el) {
            if (el.rel == link.rel) {
                for (j = 0; j < images.length; j++) if (images[j][0] == el.href) break;
                if (j == images.length) {
                    images.push([el.href, el.title]);
                    if (el.href == link.href) imageNum = j;
                }
            }
        }, this);
        return this.open(images, imageNum);
    },

    show: function(url, title) {
        return this.open([[url, title]], 0);
    },

    open: function(images, imageNum) {
        this.images = images;
        this.position();
        this.setup(true);
        this.top = window.getScrollTop() + (window.getHeight() / 15);
        this.window = {};
        this.window.height = window.getScrollHeight();
        this.window.width = window.getScrollWidth();
        this.window.top = window.getScrollTop();
        this.window.left = window.getScrollLeft();
        this.center.setStyles({ top: this.top + 'px', display: '' });
        //this.center.setStyles({ top: '0' + 'px', display: '' });
        this.fx.overlay.start(this.options.opacity);
        var objImage = this.changeImage(imageNum);
        return objImage;
    },

    position: function() {
        if (this.options.container == document.body || 1 == 1) {
            var h = window.getScrollHeight() + 'px';
            var w = window.getScrollWidth() + 'px';
            this.overlay.setStyles({ top: '0px', height: h, width: w });
        } else {
            var myCoords = this.options.container.getCoordinates();
            this.overlay.setStyles({
                top: myCoords.top + 'px',
                height: myCoords.height + 'px',
                left: myCoords.left + 'px',
                width: myCoords.width + 'px'
            });
        }
    },

    setup: function(open) {
        var elements = $A(document.getElementsByTagName('object'));
        if (window.ie) elements.extend(document.getElementsByTagName('select'));
        elements.each(function(el) { el.style.visibility = open ? 'hidden' : ''; });
        var fn = open ? 'addEvent' : 'removeEvent';
        window[fn]('scroll', this.eventPosition)[fn]('resize', this.eventPosition);
        document[fn]('keydown', this.eventKeyDown);
        this.step = 0;
    },

    keyboardListener: function(event) {
        switch (event.keyCode) {
            case 27: case 88: case 67: this.close(); break;
            case 37: case 80: this.previous(); break;
            case 39: case 78: this.next();
        }
    },

    previous: function() {
        this.linkLoc--;
        if (this.imageType.match('ads') != null) {
            track('AD_CLICK', this.listingId, 'RESULTS_PAGE');
        } else {
            track('MENU_CLICK', this.listingId, 'RESULTS_PAGE');
        }
        return this.changeImage(this.activeImage - 1);
    },

    next: function() {
        this.linkLoc++;
        if (this.imageType.match('ads') != null) {
            track('AD_CLICK', this.listingId, 'RESULTS_PAGE');
        } else {
            track('MENU_CLICK', this.listingId, 'RESULTS_PAGE');
        }
        return this.changeImage(this.activeImage + 1);
    },

    changeImage: function(imageNum) {
        if (this.step || (imageNum < 0) || (imageNum >= this.images.length)) return false;
        this.step = 1;
        this.activeImage = imageNum;
        if (this.options.animateCaption.In && this.bottom.offsetHeight) {
            this.prevLink.style.display = this.nextLink.style.display = 'none';
            this.bottom.effect('margin-top', { duration: 300, onComplete: this.loadImage.bind(this) }).start(-this.bottom.offsetHeight);
        } else {
            this.bottomContainer.style.display = this.prevLink.style.display = this.nextLink.style.display = 'none';
            this.loadImage();
        }
        this.fx.image.hide();
        this.center.className = 'lbLoading';
        try {
            var lv_intAncho = this.preload.width;
            if (lv_intAncho < 570)
                lv_intAncho = 570;

            lv_intAncho = lv_intAncho + 20;
            //sdoa: ajustes de descuedre de la parte de radio group ;
            this.bottomContainer.style.width = lv_intAncho + 'px';
        } catch (e) {
        }
        return false;
    },

    loadImage: function() {
        this.preload = new Image();
        this.preload.onload = this.nextEffect.bind(this);
        this.preload.src = this.images[this.activeImage][0];
    },

    nextEffect: function() {
        switch (this.step++) {
            case 1:
                this.center.className = '';
                this.image.style.backgroundImage = 'url(' + this.images[this.activeImage][0] + ')';
                this.image.style.backgroundRepeat = 'no-repeat';
                this.image.style.backgroundPosition = 'center';
                if (this.preload.width < 570) {
                    this.preload.width = 570;
                }
                this.image.style.width = this.bottom.style.width = this.preload.width + 'px';
                if (this.options.showControls) {
                    this.image.style.height = this.preload.height + 'px';
                } else {
                    this.image.style.height = this.prevLink.style.height = this.nextLink.style.height = this.preload.height + 'px';
                }

                this.caption.setHTML(this.images[this.activeImage][1] || '');
                if (this.options.descriptions != false) {
                    if (this.description.getFirst()) { this.description.getFirst().remove() };
                    var cl = this.options.descriptions[this.linkLoc].clone();
                    cl.setStyle('display', 'block').injectInside(this.description);
                }
                if (this.options.showNumbers) {
                    this.number.setHTML((this.images.length == 1) ? '' : 'Image ' + (this.activeImage + 1) + ' of ' + this.images.length);
                }

                if (this.activeImage) this.preloadPrev.src = this.images[this.activeImage - 1][0];
                if (this.activeImage != (this.images.length - 1)) this.preloadNext.src = this.images[this.activeImage + 1][0];
                if (this.center.clientHeight != this.image.offsetHeight) {
                    this.fx.resize.start({ height: this.image.offsetHeight });
                    break;
                }
                this.step++;
            case 2:
                if (this.center.clientWidth != this.image.offsetWidth) {
                    if (this.image.offsetWidth > 570) {
                        this.fx.resize.start({ width: this.image.offsetWidth, marginLeft: -this.image.offsetWidth / 2 });
                    } else {
                        this.fx.resize.start({ width: 570, marginLeft: -570 / 2 });
                    }
                    break;
                }
                this.step++;
            case 3:
                this.bottomContainer.setStyles({ top: (this.top + this.center.clientHeight) + 'px', height: '0px', marginLeft: this.center.style.marginLeft, display: '' });
                this.fx.image.start(1);
                var extra = this.caption.getStyle('height').toInt();
                if (this.options.descriptions != false) { extra += this.description.getStyle('height').toInt() }
                if (this.options.showControls) { extra += this.controlDiv.getStyle('height').toInt() }
                if (this.options.showNumbers) { extra += this.number.getStyle('height').toInt() }
                var num = 0;

                this.closeButton.setStyle('marginTop', num + 'px');
                if (this.activeImage != 0) this.prevLink.style.display = '';
                if (this.activeImage != (this.images.length - 1)) this.nextLink.style.display = '';
                break;
            case 4:
                if (this.options.animateCaption.Out) {
                    this.fx.bottom.set(-this.bottom.offsetHeight);
                    this.bottomContainer.style.height = '';
                    this.fx.bottom.start(0);
                    break;
                }
                this.bottomContainer.style.height = '';
            case 5:
                this.step = 0;
        }
    },

    close: function() {
        if (this.step < 0) return;
        this.step = -1;
        if (this.preload) {
            this.preload.onload = Class.empty;
            this.preload = null;
        }
        for (var f in this.fx) this.fx[f].stop();
        this.center.style.display = this.bottomContainer.style.display = 'none';
        this.fx.overlay.chain(this.setup.pass(false, this)).start(0);
        this.overlay.setStyles({ height: this.window.height + 'px', width: this.window.width + 'px' });
        window.scrollTo(0, 0);
        return false;
    }

};

/*************************************************************/