/* MooFlow Viewer (extra JS MooFlowViewer.js)
 * v0.1dev useViewer:true
 */
MooFlow.implement({

    attachViewer: function(){
        return this;
    },
    flowStart: function(){
        this.hideIcon();
    },
    
    flowComplete: function(){
        this.createIconTip();
    },
    
    createIconTip: function(){
        var cur = this.getCurrent();
        if(!$chk(cur.rel)||!$chk(cur.href)) return;
        this.tipFx = new Fx({link:'cancel'});
        if(!$chk(this.icon)) { this.icon = new Element('a').addClass('show').setStyles({'display':'none','opacity':'0'}).inject(this.MooFlow); }
        this.icon.addEvent('click', this.onClickView.bind(this, cur));
        this.icon.addEvent('mouseenter', this.showTip.bind(this, cur));
        this.icon.addEvent('mouseleave', this.hideTip.bind(this, cur));
        if(!$chk(this.tip)){ this.tip = new Element('div').addClass('tooltip').setStyles({'display':'none','opacity':'0'}).inject(this.MooFlow); }
        this.tip.set('html', cur.alt);
        this.icon.addClass(cur.rel.toLowerCase());
        this.icon.setStyle('display','block').fade(0.6);
    },

    showTip: function(cur){
        this.tip.setStyles({'top':100,'display':'block'});
        this.tipFx = new Fx.Morph(this.tip,{link:'cancel'}).start({'opacity': 0.8, 'top': this.tip.getSize().y-100});
    },
    
    hideTip: function(cur){
        this.tipFx.start({'opacity': 0, 'top': 100});
    },

    hideIcon: function(){
        if($chk(this.icon) && $chk(this.icon.getParent())) this.icon.destroy();
        if($chk(this.tip) && $chk(this.tip.getParent())) this.tip.destroy();
        this.icon = this.tip = null;    
    },
    
    onClickView: function(cur){
        switch (cur.rel.toLowerCase()){
            case 'image':
            this.loadImage(cur);
            break;
            case 'link':
            window.open(cur.href, cur.target || '_blank');
            break;
            default:
        }
    },
    
    loadImage: function(cur){
        this.icon.removeClass('image').addClass('viewerload');
        this.image = new Asset.image(cur.href, {onload: this.showImage.bind(this)});
    },
    
    showImage: function(){
        var cur = this.getCurrent();
        var c = cur.con.getFirst().getCoordinates();
        this.image.inject(document.body);
        this.image.addEvent('click', this.hideImage.bind(this));
        this.image.setStyles({'left':c.left,'top':c.top,'width':c.width,'height':c.height,'position':'absolute','z-index':'103'});
        var imageFx = new Fx.Morph(this.image, {transition: Fx.Transitions.Sine.easeOut});
        var to = {x: this.image.get('width'), y: this.image.get('height')};
        var box = document.getSize(), scroll = document.getScroll();
        var pos = {x: scroll.x + ((box.x - to.x) / 2).toInt(), y: scroll.y + ((box.y - to.y) / 2).toInt() };
        var vars = {left: pos.x, top: pos.y, width: to.x, height: to.y};
        imageFx.start(vars);
    },
    
    hideImage: function(){
        this.icon.removeClass('viewerload').addClass('image');
        this.image.dispose();
    }
});