contentpanels.js

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    setSize : function(width, height){
        if(this.fitToFrame && !this.ignoreResize(width, height)){
            if(this.fitContainer && this.resizeEl != this.el){
                this.el.setSize(width, height);
            }
            var size = this.adjustForComponents(width, height);
            this.resizeEl.setSize(this.autoWidth ? "auto" : size.width, this.autoHeight ? "auto" : size.height);
            this.fireEvent('resize', this, size.width, size.height);
        }
    },
    
    /**
     * Returns this panel's title
     * @return {String} 
     */
    getTitle : function(){
        return this.title;
    },
    
    /**
     * Set this panel's title
     * @param {String} title
     */
    setTitle : function(title){
        this.title = title;
        if(this.region){
            this.region.updatePanelTitle(this, title);
        }
    },
    
    /**
     * Returns true is this panel was configured to be closable
     * @return {Boolean} 
     */
    isClosable : function(){
        return this.closable;
    },
    
    beforeSlide : function(){
        this.el.clip();
        this.resizeEl.clip();
    },
    
    afterSlide : function(){
        this.el.unclip();
        this.resizeEl.unclip();
    },
    
    /**
     *   Force a content refresh from the URL specified in the {@link #setUrl} method.
     *   Will fail silently if the {@link #setUrl} method has not been called.
     *   This does not activate the panel, just updates its content.
     */
    refresh : function(){
        if(this.refreshDelegate){
           this.loaded = false;
           this.refreshDelegate();
        }
    },
    
    /**
     * Destroys this panel
     */
    destroy : function(){
        this.el.removeAllListeners();
        var tempEl = document.createElement("span");
        tempEl.appendChild(this.el.dom);
        tempEl.innerHTML = "";
        this.el.remove();
        this.el = null;
    }
});

Ext.ContentPanel.prototype.getUpdateManager = Ext.ContentPanel.prototype.getUpdater;

/**
 * @class Ext.GridPanel
 * @extends Ext.ContentPanel
 * @constructor
 * Create a new GridPanel.
 * @param {Ext.grid.Grid} grid The grid for this panel
 * @param {String/Object} config A string to set only the panel's title, or a config object
 */
Ext.GridPanel = function(grid, config){
    this.wrapper = Ext.DomHelper.append(document.body, // wrapper for IE7 strict & safari scroll issue
        {tag: "div", cls: "x-layout-grid-wrapper x-layout-inactive-content"}, true);
    this.wrapper.dom.appendChild(grid.getGridEl().dom);
    Ext.GridPanel.superclass.constructor.call(this, this.wrapper, config);
    if(this.toolbar){
        this.toolbar.el.insertBefore(this.wrapper.dom.firstChild);
    }
    grid.monitorWindowResize = false; // turn off autosizing
    grid.autoHeight = false;
    grid.autoWidth = false;
    this.grid = grid;
    this.grid.getGridEl().replaceClass("x-layout-inactive-content", "x-layout-component-panel");
};

Ext.extend(Ext.GridPanel, Ext.ContentPanel, {
    getId : function(){
        return this.grid.id;
    },
    
    /**
     * Returns the grid for this panel
     * @return {Ext.grid.Grid} 
     */
    getGrid : function(){
        return this.grid;    
    },
    
    setSize : function(width, height){
        if(!this.ignoreResize(width, height)){
            var grid = this.grid;
            var size = this.adjustForComponents(width, height);
            grid.getGridEl().setSize(size.width, size.height);
            grid.autoSize();
        }
    },
    
    beforeSlide : function(){
        this.grid.getView().scroller.clip();
    },
    
    afterSlide : function(){
        this.grid.getView().scroller.unclip();
    },
    
    destroy : function(){
        this.grid.destroy();
        delete this.grid;
        Ext.GridPanel.superclass.destroy.call(this); 
    }
});


/**
 * @class Ext.NestedLayoutPanel
 * @extends Ext.ContentPanel
 * @constructor
 * Create a new NestedLayoutPanel.
 * @param {Ext.BorderLayout} layout The layout for this panel
 * @param {String/Object} config A string to set only the title or a config object
 */
Ext.NestedLayoutPanel = function(layout, config){
    Ext.NestedLayoutPanel.superclass.constructor.call(this, layout.getEl(), config);
    layout.monitorWindowResize = false; // turn off autosizing
    this.layout = layout;
    this.layout.getEl().addClass("x-layout-nested-layout");
};

Ext.extend(Ext.NestedLayoutPanel, Ext.ContentPanel, {

    setSize : function(width, height){
        if(!this.ignoreResize(width, height)){
            var size = this.adjustForComponents(width, height);
            var el = this.layout.getEl();
            el.setSize(size.width, size.height);
            var touch = el.dom.offsetWidth;
            this.layout.layout();
            // ie requires a double layout on the first pass
            if(Ext.isIE && !this.initialized){
                this.initialized = true;
                this.layout.layout();
            }
        }
    },
    
    /**
     * Returns the nested BorderLayout for this panel
     * @return {Ext.BorderLayout} 
     */
    getLayout : function(){
        return this.layout;
    }
});

Ext.ScrollPanel = function(el, config, content){
    config = config || {};
    config.fitToFrame = true;
    Ext.ScrollPanel.superclass.constructor.call(this, el, config, content);
    
    this.el.dom.style.overflow = "hidden";
    var wrap = this.el.wrap({cls: "x-scroller x-layout-inactive-content"});
    this.el.removeClass("x-layout-inactive-content");
    this.el.on("mousewheel", this.onWheel, this);

    var up = wrap.createChild({cls: "x-scroller-up", html: " "}, this.el.dom);
    var down = wrap.createChild({cls: "x-scroller-down", html: " "});
    up.unselectable(); down.unselectable();
    up.on("click", this.scrollUp, this);
    down.on("click", this.scrollDown, this);
    up.addClassOnOver("x-scroller-btn-over");
    down.addClassOnOver("x-scroller-btn-over");
    up.addClassOnClick("x-scroller-btn-click");
    down.addClassOnClick("x-scroller-btn-click");
    this.adjustments = [0, -(up.getHeight() + down.getHeight())];

    this.resizeEl = this.el;
    this.el = wrap; this.up = up; this.down = down;
};

Ext.extend(Ext.ScrollPanel, Ext.ContentPanel, {
    increment : 100,
    wheelIncrement : 5,
    scrollUp : function(){
        this.resizeEl.scroll("up", this.increment, {callback: this.afterScroll, scope: this});
    },

    scrollDown : function(){
        this.resizeEl.scroll("down", this.increment, {callback: this.afterScroll, scope: this});
    },

    afterScroll : function(){
        var el = this.resizeEl;
        var t = el.dom.scrollTop, h = el.dom.scrollHeight, ch = el.dom.clientHeight;
        this.up[t == 0 ? "addClass" : "removeClass"]("x-scroller-btn-disabled");
        this.down[h - t <= ch ? "addClass" : "removeClass"]("x-scroller-btn-disabled");
    },

    setSize : function(){
        Ext.ScrollPanel.superclass.setSize.apply(this, arguments);
        this.afterScroll();
    },

    onWheel : function(e){
        var d = e.getWheelDelta();
        this.resizeEl.dom.scrollTop -= (d*this.wheelIncrement);
        this.afterScroll();
        e.stopEvent();
    },

    setContent : function(content, loadScripts){
        this.resizeEl.update(content, loadScripts);
    }

});