/*
 * Ext - JS Library 1.0 Alpha 2
 * Copyright(c) 2006-2007, Jack Slocum.
 * 
 * http://www.extjs.com/license.txt
 */


Ext.Resizable = function(el, config){
    this.el = Ext.get(el);
    
    if(config && config.wrap){
        config.resizeChild = this.el;
        this.el = this.el.wrap(typeof config.wrap == "object" ? config.wrap : {cls:"xresizable-wrap"});
        this.el.id = this.el.dom.id = config.resizeChild.id + "-rzwrap";
        this.el.setStyle("overflow", "hidden");
        this.el.setPositioning(config.resizeChild.getPositioning());
        config.resizeChild.clearPositioning();
        if(!config.width || !config.height){
            var csize = config.resizeChild.getSize();
            this.el.setSize(csize.width, csize.height);
        }
        if(config.pinned && !config.adjustments){
            config.adjustments = "auto";
        }
    }
    
    this.proxy = this.el.createProxy({tag: "div", cls: "x-resizable-proxy", id: this.el.id + "-rzproxy"});
    this.proxy.unselectable();
    
    this.overlay = this.el.createProxy({tag: "div", cls: "x-resizable-overlay", html: " "});
    this.overlay.unselectable();
    this.overlay.enableDisplayMode("block");
    this.overlay.on("mousemove", this.onMouseMove, this);
    this.overlay.on("mouseup", this.onMouseUp, this);
    
    Ext.apply(this, config);
    
    if(this.pinned){
        this.disableTrackOver = true;
        this.el.addClass("x-resizable-pinned");
    }
        var position = this.el.getStyle("position");
    if(position != "absolute" && position != "fixed"){
        this.el.setStyle("position", "relative");
    }
    if(!this.handles){         this.handles = 's,e,se';
        if(this.multiDirectional){
            this.handles += ',n,w';
        }
    }
    if(this.handles == "all"){
        this.handles = "n s e w ne nw se sw";
    }
    var hs = this.handles.split(/\s*?[,;]\s*?| /);
    var ps = Ext.Resizable.positions;
    for(var i = 0, len = hs.length; i < len; i++){
        if(hs[i] && ps[hs[i]]){
            var pos = ps[hs[i]];
            this[pos] = new Ext.Resizable.Handle(this, pos, this.disableTrackOver, this.transparent);
        }
    }
        this.corner = this.southeast;
    
    if(this.handles.indexOf("n") != -1 || this.handles.indexOf("w") != -1){
        this.updateBox = true;
    }   
   
    this.activeHandle = null;
    
    if(this.resizeChild){
        if(typeof this.resizeChild == "boolean"){
            this.resizeChild = Ext.get(this.el.dom.firstChild, true);
        }else{
            this.resizeChild = Ext.get(this.resizeChild, true);
        }
    }
    
    if(this.adjustments == "auto"){
        var rc = this.resizeChild;
        var hw = this.west, he = this.east, hn = this.north, hs = this.south;
        if(rc && (hw || hn)){
            rc.position("relative");
            rc.setLeft(hw ? hw.el.getWidth() : 0);
            rc.setTop(hn ? hn.el.getHeight() : 0);
        }
        this.adjustments = [
            (he ? -he.el.getWidth() : 0) + (hw ? -hw.el.getWidth() : 0),
            (hn ? -hn.el.getHeight() : 0) + (hs ? -hs.el.getHeight() : 0) -1 
        ];
    }
    
    if(this.draggable){
        this.dd = this.dynamic ? 
            this.el.initDD(null) : this.el.initDDProxy(null, {dragElId: this.proxy.id});
        this.dd.setHandleElId(this.resizeChild ? this.resizeChild.id : this.el.id);
    }
    
        this.events = {
        
        "beforeresize" : true,
        
        "resize" : true
    };
    
    if(this.width !== null && this.height !== null){
        this.resizeTo(this.width, this.height);
    }else{
        this.updateChildSize();
    }
};

Ext.extend(Ext.Resizable, Ext.util.Observable, {
    
        resizeChild : false,
        
        adjustments : [0, 0],
        
        minWidth : 5,
        
        minHeight : 5,
        
        maxWidth : 10000,
        
        maxHeight : 10000,
        
        enabled : true,
        
        animate : false,
        
        duration : .35,
        
        dynamic : false,
                
        handles : false,
        multiDirectional : false,
        
        disableTrackOver : false,
        
        easing : 'easeOutStrong',
        
        widthIncrement : 0,
        
        heightIncrement : 0,
        
        pinned : false,
        
        width : null,
        
        height : null,
        
        preserveRatio : false,
        
        transparent: false,
        
        minX: 0,
        
        minY: 0,
        
        draggable: false,
    
    resizeTo : function(width, height){
        this.el.setSize(width, height);
        this.updateChildSize();
        this.fireEvent("resize", this, width, height, null);
    },
    
    startSizing : function(e){
        this.fireEvent("beforeresize", this, e);
        if(this.enabled){             this.resizing = true;
            this.startBox = this.el.getBox();
            this.startPoint = e.getXY();
            this.offsets = [(this.startBox.x + this.startBox.width) - this.startPoint[0],
                            (this.startBox.y + this.startBox.height) - this.startPoint[1]];
            this.proxy.setBox(this.startBox);
            
            this.overlay.setSize(Ext.lib.Dom.getViewWidth(true), Ext.lib.Dom.getViewHeight(true));
            this.overlay.show();
            
            if(!this.dynamic){
                this.proxy.show();
            }
        }
    },
    
    onMouseDown : function(handle, e){
        if(this.enabled){
            e.stopEvent();
            this.activeHandle = handle;
            this.overlay.setStyle("cursor", handle.el.getStyle("cursor"));
            this.startSizing(e);
        }          
    },
    
    onMouseUp : function(e){
        var size = this.resizeElement();
        this.resizing = false;
        this.handleOut();
        this.overlay.hide();
        this.fireEvent("resize", this, size.width, size.height, e);
    },
    
    updateChildSize : function(){
        if(this.resizeChild){
            var el = this.el;
            var child = this.resizeChild;
            var adj = this.adjustments;
            if(el.dom.offsetWidth){
                var b = el.getSize(true);
                child.setSize(b.width+adj[0], b.height+adj[1]);
            }
                                                            if(Ext.isIE){
                setTimeout(function(){
                    if(el.dom.offsetWidth){
                        var b = el.getSize(true);
                        child.setSize(b.width+adj[0], b.height+adj[1]);
                    }
                }, 10);
            }
        }
    },
    
    snap : function(value, inc, min){
        if(!inc || !value) return value;
        var newValue = value;
        var m = value % inc;
        if(m > 0){
            if(m > (inc/2)){
                newValue = value + (inc-m);
            }else{
                newValue = value - m;
            }
        }
        return Math.max(min, newValue);
    },
    
    resizeElement : function(){
        var box = this.proxy.getBox();
        if(this.updateBox){
            this.el.setBox(box, false, this.animate, this.duration, null, this.easing);
        }else{
            this.el.setSize(box.width, box.height, this.animate, this.duration, null, this.easing);
        }
        this.updateChildSize();
        this.proxy.hide();
        return box;
    },
    
    constrain : function(v, diff, m, mx){
        if(v - diff < m){
            diff = v - m;    
        }else if(v - diff > mx){
            diff = mx - v; 
        }
        return diff;                
    },
    
    onMouseMove : function(e){
        if(this.enabled){
            try{            
                        var curSize = this.curSize || this.startBox;
            var x = this.startBox.x, y = this.startBox.y;
            var ox = x, oy = y;
            var w = curSize.width, h = curSize.height;
            var ow = w, oh = h;
            var mw = this.minWidth, mh = this.minHeight;
            var mxw = this.maxWidth, mxh = this.maxHeight;
            var wi = this.widthIncrement;
            var hi = this.heightIncrement;
            
            var eventXY = e.getXY();
            var diffX = -(this.startPoint[0] - Math.max(this.minX, eventXY[0]));
            var diffY = -(this.startPoint[1] - Math.max(this.minY, eventXY[1]));
            
            var pos = this.activeHandle.position;
            
            switch(pos){
                case "east":
                    w += diffX; 
                    w = Math.min(Math.max(mw, w), mxw);
                    break;
                case "south":
                    h += diffY;
                    h = Math.min(Math.max(mh, h), mxh);
                    break;
                case "southeast":
                    w += diffX; 
                    h += diffY;
                    w = Math.min(Math.max(mw, w), mxw);
                    h = Math.min(Math.max(mh, h), mxh);
                    break;
                case "north":
                    diffY = this.constrain(h, diffY, mh, mxh);
                    y += diffY;
                    h -= diffY;
                    break;
                case "west":
                    diffX = this.constrain(w, diffX, mw, mxw);
                    x += diffX;
                    w -= diffX;
                    break;
                case "northeast":
                    w += diffX; 
                    w = Math.min(Math.max(mw, w), mxw);
                    diffY = this.constrain(h, diffY, mh, mxh);
                    y += diffY;
                    h -= diffY;
                    break;
                case "northwest":
                    diffX = this.constrain(w, diffX, mw, mxw);
                    diffY = this.constrain(h, diffY, mh, mxh);
                    y += diffY;
                    h -= diffY;
                    x += diffX;
                    w -= diffX;
                    break;
               case "southwest":
                    diffX = this.constrain(w, diffX, mw, mxw);
                    h += diffY;
                    h = Math.min(Math.max(mh, h), mxh);
                    x += diffX;
                    w -= diffX;
                    break;
            }
            
            var sw = this.snap(w, wi, mw);
            var sh = this.snap(h, hi, mh);
            if(sw != w || sh != h){
                switch(pos){
                    case "northeast":
                        y -= sh - h;
                    break;
                    case "north":
                        y -= sh - h;
                        break;
                    case "southwest":
                        x -= sw - w;
                    break;
                    case "west":
                        x -= sw - w;
                        break;
                    case "northwest":
                        x -= sw - w;
                        y -= sh - h;
                    break;
                }
                w = sw;
                h = sh;
            }
            
            if(this.preserveRatio){
                switch(pos){
                    case "southeast":
                    case "east":
                        h = oh * (w/ow);
                        h = Math.min(Math.max(mh, h), mxh);
                        w = ow * (h/oh);
                       break;
                    case "south":
                        w = ow * (h/oh);
                        w = Math.min(Math.max(mw, w), mxw);
                        h = oh * (w/ow);
                        break;
                    case "northeast":
                        w = ow * (h/oh);
                        w = Math.min(Math.max(mw, w), mxw);
                        h = oh * (w/ow);
                    break;
                    case "north":
                        var tw = w;
                        w = ow * (h/oh);
                        w = Math.min(Math.max(mw, w), mxw);
                        h = oh * (w/ow);
                        x += (tw - w) / 2;
                        break;
                    case "southwest":
                        h = oh * (w/ow);
                        h = Math.min(Math.max(mh, h), mxh);
                        var tw = w;
                        w = ow * (h/oh);
                        x += tw - w;
                        break;
                    case "west":
                        var th = h;
                        h = oh * (w/ow);
                        h = Math.min(Math.max(mh, h), mxh);
                        y += (th - h) / 2;
                        var tw = w;
                        w = ow * (h/oh);
                        x += tw - w;
                       break;
                    case "northwest":
                        var tw = w;
                        var th = h;
                        h = oh * (w/ow);
                        h = Math.min(Math.max(mh, h), mxh);
                        w = ow * (h/oh);
                        y += th - h;
                         x += tw - w;
                       break;
                        
                }
            }
            this.proxy.setBounds(x, y, w, h);
            if(this.dynamic){
                this.resizeElement();
            }
            }catch(e){}
        }
    },
    
    handleOver : function(){
        if(this.enabled){
            this.el.addClass("x-resizable-over");
        }
    },
    
    handleOut : function(){
        if(!this.resizing){
            this.el.removeClass("x-resizable-over");
        }
    },
    
    
    getEl : function(){
        return this.el;
    },
    
    
    getResizeChild : function(){
        return this.resizeChild;
    },
    
    
    destroy : function(removeEl){
        this.proxy.remove();
        this.overlay.removeAllListeners();
        this.overlay.remove();
        var ps = Ext.Resizable.positions;
        for(var k in ps){
            if(typeof ps[k] != "function" && this[ps[k]]){
                var h = this[ps[k]];
                h.el.removeAllListeners();
                h.el.remove();
            }
        }
        if(removeEl){
            this.el.update("");
            this.el.remove();
        }
    }
});

Ext.Resizable.positions = {
    n: "north", s: "south", e: "east", w: "west", se: "southeast", sw: "southwest", nw: "northwest", ne: "northeast"
};


Ext.Resizable.Handle = function(rz, pos, disableTrackOver, transparent){
    if(!this.tpl){
                var tpl = Ext.DomHelper.createTemplate(
            {tag: "div", cls: "x-resizable-handle x-resizable-handle-{0}"}
        );
        tpl.compile();
        Ext.Resizable.Handle.prototype.tpl = tpl;
    }
    this.position = pos;
    this.rz = rz;
    this.el = this.tpl.append(rz.el.dom, [this.position], true);
    this.el.unselectable();
    if(transparent){
        this.el.setOpacity(0);
    }
    this.el.on("mousedown", this.onMouseDown, this);
    if(!disableTrackOver){
        this.el.on("mouseover", this.onMouseOver, this);
        this.el.on("mouseout", this.onMouseOut, this);
    }
};

Ext.Resizable.Handle.prototype = {
    afterResize : function(rz){
            },
    
    onMouseDown : function(e){
        this.rz.onMouseDown(this, e);
    },
    
    onMouseOver : function(e){
        this.rz.handleOver(this, e);
    },
    
    onMouseOut : function(e){
        this.rz.handleOut(this, e);
    }  
};