/*
moo.fx pack, effects extensions for moo.fx.
by Valerio Proietti (http://mad4milk.net) MIT-style LICENSE
for more info visit (http://moofx.mad4milk.net).
Wednesday, November 16, 2005
v1.0.4
*/

//text size modify, now works with pixels too.
fx.Text = Class.create();
fx.Text.prototype = Object.extend(new fx.Base(), {
    initialize: function(el, options) {
        this.el = $(el);
        this.setOptions(options);
        if (!this.options.unit) this.options.unit = "em";
    },

    increase: function() {
        this.el.style.fontSize = this.now + this.options.unit;
    }
});

//composition effect, calls Width and Height alltogheter
fx.Resize = Class.create();
fx.Resize.prototype = {
    initialize: function(el, options) {
        this.h = new fx.Height(el, options); 
        if (options) options.onComplete = null;
        this.w = new fx.Width(el, options);
        this.el = $(el);
    },

    toggle: function(){
        this.h.toggle();
        this.w.toggle();
    },

    modify: function(hto, wto) {
        this.h.custom(this.el.offsetHeight, this.el.offsetHeight + hto);
        this.w.custom(this.el.offsetWidth, this.el.offsetWidth + wto);
    },

    custom: function(hto, wto) {
        this.h.custom(this.el.offsetHeight, hto);
        this.w.custom(this.el.offsetWidth, wto);
    },

    hide: function(){
        this.h.hide();
        this.w.hide();
    }
}

//composition effect, calls Opacity and (Width and/or Height) alltogheter
fx.FadeSize = Class.create();
fx.FadeSize.prototype = {
    initialize: function(el, options) {
        this.el = $(el);
        this.el.o = new fx.Opacity(el, options);
        if (options) options.onComplete = null;
        this.el.h = new fx.Height(el, options);
        this.el.w = new fx.Width(el, options);
    },

    toggle: function() {
        this.el.o.toggle();
        for (var i = 0; i < arguments.length; i++) {
            if (arguments[i] == 'height') this.el.h.toggle();
            if (arguments[i] == 'width') this.el.w.toggle();
        }
    },

    hide: function(){
        this.el.o.hide();
        for (var i = 0; i < arguments.length; i++) {
            if (arguments[i] == 'height') this.el.h.hide();
            if (arguments[i] == 'width') this.el.w.hide();
        }
    }
}

//intended to work with arrays.
var Multi = new Object();
Multi = function(){};
Multi.prototype = {
    initialize: function(elements, options){
        this.options = options;
        this.el = this.getElementsFromArray(elements);
        for (i=0;i<this.el.length;i++){
            this.effect(this.el[i]);
        }
    },

    getElementsFromArray: function(array) {
        var elements = new Array();
        for (i=0;i<array.length;i++) { 
            elements.push($(array[i])); 
        }
        return elements;
    }
}

//Fadesize with arrays
fx.MultiFadeSize = Class.create();
fx.MultiFadeSize.prototype = Object.extend(new Multi(), {
    effect: function(el){
        el.fs = new fx.FadeSize(el, this.options);
    },

    showThisHideOpen: function(el, delay, mode){
        for (i=0;i<this.el.length;i++){
            if (this.el[i].offsetHeight > 0 && this.el[i] != el && this.el[i].h.timer == null && el.h.timer == null){
                this.el[i].fs.toggle(mode);
                setTimeout(function(){el.fs.toggle(mode);}.bind(el), delay);
            }
            
        }
    },

    hide: function(el, mode){
        el.fs.hide(mode);
    }
});

var Remember = new Object();
Remember = function(){};
Remember.prototype = {
    initialize: function(el, options){
        this.el = $(el);
        this.days = 365;
        this.options = options;
        this.effect();
        var cookie = this.readCookie();
        if (cookie) {
            this.fx.now = cookie;
            this.fx.increase();
        }
    },

    //cookie functions based on code by Peter-Paul Koch
    setCookie: function(value) {
        var date = new Date();
        date.setTime(date.getTime()+(this.days*24*60*60*1000));
        var expires = "; expires="+date.toGMTString();
        document.cookie = this.el+this.el.id+this.prefix+"="+value+expires+"; path=/";
    },

    readCookie: function() {
        var nameEQ = this.el+this.el.id+this.prefix + "=";
        var ca = document.cookie.split(';');
        for(var i=0;i < ca.length;i++) {
            var c = ca[i];
            while (c.charAt(0)==' ') c = c.substring(1,c.length);
            if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
        }
        return false;
    },

    custom: function(from, to){
        if (this.fx.now != to) {
            this.setCookie(to);
            this.fx.custom(from, to);
        }
    }
}

fx.RememberHeight = Class.create();
fx.RememberHeight.prototype = Object.extend(new Remember(), {
    effect: function(){
        this.fx = new fx.Height(this.el, this.options);
        this.prefix = 'height';
    },
    
    toggle: function(){
        if (this.el.offsetHeight == 0) this.setCookie(this.el.scrollHeight);
        else this.setCookie(0);
        this.fx.toggle();
    },
    
    resize: function(to){
        this.setCookie(this.el.offsetHeight+to);
        this.fx.custom(this.el.offsetHeight,this.el.offsetHeight+to);
    },

    hide: function(){
        if (!this.readCookie()) {
            this.fx.hide();
        }
    }
});

fx.RememberText = Class.create();
fx.RememberText.prototype = Object.extend(new Remember(), {
    effect: function(){
        this.fx = new fx.Text(this.el, this.options);
        this.prefix = 'text';
    }
});


//use to attach effects without using js code, just classnames and rel attributes.
ParseClassNames = Class.create();
ParseClassNames.prototype = {
    initialize: function(options){
        var babies = document.getElementsByTagName('*') || document.all;
        for (var i = 0; i < babies.length; i++) {
            var el = babies[i];
            //attach the effect, from the classNames;
            var effects = this.getEffects(el);
            for (var j = 0; j < effects.length; j++) {
                if (j == 1 && options) options.onComplete = null;
                el[effects[j]+"fx"] = new fx[effects[j]](el, options);
            }
            //execute methods, from rel
            if (el.rel) {
                el.crel = el.rel.split(' ');
                if (el.crel[0].indexOf("fx_") > -1) {
                    var event = el.crel[0].replace('fx_', '');
                    var tocompute = this.getEffects($(el.crel[1]));
                    el["on"+event] = function(){
                        for (var f = 0; f < tocompute.length; f++) {
                            $(this.crel[1])[tocompute[f]+"fx"][this.crel[2] || "toggle"](this.crel[3] || null, this.crel[4] || null);
                        }
                    }
                }
            }
        }
    },

    getEffects: function(el){
        var effects = new Array();
        var css = el.className.split(' ');
        for (var i = 0; i < css.length; i++) {
            if (css[i].indexOf('fx_') > -1) {
                var effect = css[i].replace('fx_', '');
                effects.push(effect);
            }
        }
        return effects;
    }
}