# SplitLayoutRegion.js

    /**
     * @class Ext.SplitLayoutRegion
     * @extends Ext.LayoutRegion
     * Adds a splitbar and other (private) useful functionality to a LayoutRegion
     */
    Ext.SplitLayoutRegion = function(mgr, config, pos, cursor){
        this.cursor = cursor;
        Ext.SplitLayoutRegion.superclass.constructor.call(this, mgr, config, pos);
    };

    Ext.extend(Ext.SplitLayoutRegion, Ext.LayoutRegion, {
        splitTip : "Drag to resize.",
        collapsibleSplitTip : "Drag to resize. Double click to hide.",
        useSplitTips : false,

        applyConfig : function(config){
            Ext.SplitLayoutRegion.superclass.applyConfig.call(this, config);
            if(config.split){
                if(!this.split){
                    var splitEl = Ext.DomHelper.append(this.mgr.el.dom,
                            {tag: "div", id: this.el.id + "-split", cls: "x-layout-split x-layout-split-"+this.position, html: "&#160;"});
                    /** The SplitBar for this region @type Ext.SplitBar */
                    this.split = new Ext.SplitBar(splitEl, this.el, this.orientation);
                    this.split.on("moved", this.onSplitMove, this);
                    this.split.useShim = config.useShim === true;
                    this.split.getMaximumSize = this[this.position == 'north' || this.position == 'south' ? 'getVMaxSize' : 'getHMaxSize'].createDelegate(this);
                    if(this.useSplitTips){
                        this.split.el.dom.title = config.collapsible ? this.collapsibleSplitTip : this.splitTip;
                    }
                    if(config.collapsible){
                        this.split.el.on("dblclick", this.collapse,  this);
                    }
                }
                if(typeof config.minSize != "undefined"){
                    this.split.minSize = config.minSize;
                }
                if(typeof config.maxSize != "undefined"){
                    this.split.maxSize = config.maxSize;
                }
                if(config.hideWhenEmpty || config.hidden){
                    this.hideSplitter();
                }
            }
        },

        getHMaxSize : function(){
             var cmax = this.config.maxSize || 10000;
             var center = this.mgr.getRegion("center");
             return Math.min(cmax, (this.el.getWidth()+center.getEl().getWidth())-center.getMinWidth());
        },

        getVMaxSize : function(){
             var cmax = this.config.maxSize || 10000;
             var center = this.mgr.getRegion("center");
             return Math.min(cmax, (this.el.getHeight()+center.getEl().getHeight())-center.getMinHeight());
        },

        onSplitMove : function(split, newSize){
            this.fireEvent("resized", this, newSize);
        },

        /**
         * Returns the SplitBar for this region.
         * @return {Ext.SplitBar}
         */
        getSplitBar : function(){
            return this.split;
        },

        hide : function(){
            this.hideSplitter();
            Ext.SplitLayoutRegion.superclass.hide.call(this);
        },

        hideSplitter : function(){
            if(this.split){
                this.split.el.setLocation(-2000,-2000);
                this.split.el.hide();
            }
        },

        show : function(){
            if(this.split){
                this.split.el.show();
            }
            Ext.SplitLayoutRegion.superclass.show.call(this);
        },

        beforeSlide: function(){
            if(Ext.isGecko){// firefox overflow auto bug workaround
                this.bodyEl.clip();
                if(this.tabs) this.tabs.bodyEl.clip();
                if(this.activePanel){
                    this.activePanel.getEl().clip();

                    if(this.activePanel.beforeSlide){
                        this.activePanel.beforeSlide();
                    }
                }
            }
        },

        afterSlide : function(){
            if(Ext.isGecko){// firefox overflow auto bug workaround
                this.bodyEl.unclip();
                if(this.tabs) this.tabs.bodyEl.unclip();
                if(this.activePanel){
                    this.activePanel.getEl().unclip();
                    if(this.activePanel.afterSlide){
                        this.activePanel.afterSlide();
                    }
                }
            }
        },

        initAutoHide : function(){
            if(this.autoHide !== false){
                if(!this.autoHideHd){
                    var st = new Ext.util.DelayedTask(this.slideIn, this);
                    this.autoHideHd = {
                        "mouseout": function(e){
                            if(!e.within(this.el, true)){
                                st.delay(500);
                            }
                        },
                        "mouseover" : function(e){
                            st.cancel();
                        },
                        scope : this
                    };
                }
                this.el.on(this.autoHideHd);
            }
        },

        clearAutoHide : function(){
            if(this.autoHide !== false){
                this.el.un("mouseout", this.autoHideHd.mouseout);
                this.el.un("mouseover", this.autoHideHd.mouseover);
            }
        },

        clearMonitor : function(){
            Ext.get(document).un("click", this.slideInIf, this);
        },

        // these names are backwards but not changed for compat
        slideOut : function(){
            if(this.isSlid || this.el.hasActiveFx()){
                return;
            }
            this.isSlid = true;
            if(this.collapseBtn){
                this.collapseBtn.hide();
            }
            this.closeBtnState = this.closeBtn.getStyle('display');
            this.closeBtn.hide();
            if(this.stickBtn){
                this.stickBtn.show();
            }
            this.el.show();
            this.el.alignTo(this.collapsedEl, this.getCollapseAnchor());
            this.beforeSlide();
            this.el.setStyle("z-index", 20000);
            this.el.slideIn(this.getSlideAnchor(), {
                callback: function(){
                    this.afterSlide();
                    this.initAutoHide();
                    Ext.get(document).on("click", this.slideInIf, this);
                    this.fireEvent("slideshow", this);
                },
                scope: this,
                block: true
            });
        },

        afterSlideIn : function(){
            this.clearAutoHide();
            this.isSlid = false;
            this.clearMonitor();
            this.el.setStyle("z-index", "");
            if(this.collapseBtn){
                this.collapseBtn.show();
            }
            this.closeBtn.setStyle('display', this.closeBtnState);
            if(this.stickBtn){
                this.stickBtn.hide();
            }
            this.fireEvent("slidehide", this);
        },

        slideIn : function(cb){
            if(!this.isSlid || this.el.hasActiveFx()){
                Ext.callback(cb);
                return;
            }
            this.isSlid = false;
            this.beforeSlide();
            this.el.slideOut(this.getSlideAnchor(), {
                callback: function(){
                    this.el.setLeftTop(-10000, -10000);
                    this.afterSlide();
                    this.afterSlideIn();
                    Ext.callback(cb);
                },
                scope: this,
                block: true
            });
        },

        slideInIf : function(e){
            if(!e.within(this.el)){
                this.slideIn();
            }
        },

        animateCollapse : function(){
            this.beforeSlide();
            this.el.setStyle("z-index", 20000);
            var anchor = this.getSlideAnchor();
            this.el.slideOut(anchor, {
                callback : function(){
                    this.el.setStyle("z-index", "");
                    this.collapsedEl.slideIn(anchor, {duration:.3});
                    this.afterSlide();
                    this.el.setLocation(-10000,-10000);
                    this.el.hide();
                    this.fireEvent("collapsed", this);
                },
                scope: this,
                block: true
            });
        },

        animateExpand : function(){
            this.beforeSlide();
            this.el.alignTo(this.collapsedEl, this.getCollapseAnchor(), this.getExpandAdj());
            this.el.setStyle("z-index", 20000);
            this.collapsedEl.hide({
                duration:.1
            });
            this.el.slideIn(this.getSlideAnchor(), {
                callback : function(){
                    this.el.setStyle("z-index", "");
                    this.afterSlide();
                    if(this.split){
                        this.split.el.show();
                    }
                    this.fireEvent("invalidated", this);
                    this.fireEvent("expanded", this);
                },
                scope: this,
                block: true
            });
        },

        anchors : {
            "west" : "left",
            "east" : "right",
            "north" : "top",
            "south" : "bottom"
        },

        sanchors : {
            "west" : "l",
            "east" : "r",
            "north" : "t",
            "south" : "b"
        },

        canchors : {
            "west" : "tl-tr",
            "east" : "tr-tl",
            "north" : "tl-bl",
            "south" : "bl-tl"
        },

        getAnchor : function(){
            return this.anchors[this.position];
        },

        getCollapseAnchor : function(){
            return this.canchors[this.position];
        },

        getSlideAnchor : function(){
            return this.sanchors[this.position];
        },

        getAlignAdj : function(){
            var cm = this.cmargins;
            switch(this.position){
                case "west":
                    return [0, 0];
                break;
                case "east":
                    return [0, 0];
                break;
                case "north":
                    return [0, 0];
                break;
                case "south":
                    return [0, 0];
                break;
            }
        },

        getExpandAdj : function(){
            var c = this.collapsedEl, cm = this.cmargins;
            switch(this.position){
                case "west":
                    return [-(cm.right+c.getWidth()+cm.left), 0];
                break;
                case "east":
                    return [cm.right+c.getWidth()+cm.left, 0];
                break;
                case "north":
                    return [0, -(cm.top+cm.bottom+c.getHeight())];
                break;
                case "south":
                    return [0, cm.top+cm.bottom+c.getHeight()];
                break;
            }
        }
    });

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