/**
 * @class Ext.layout.FitLayout
 * @extends Ext.layout.ContainerLayout
 * 
This is a base class for layouts that contain a single item that automatically expands to fill the layout's
 * container.  This class is intended to be extended or created via the layout:'fit' {@link Ext.Container#layout}
 * config, and should generally not need to be created directly via the new keyword.
 * 
FitLayout does not have any direct config options (other than inherited ones).  To fit a panel to a container
 * using FitLayout, simply set layout:'fit' on the container and add a single panel to it.  If the container has
 * multiple panels, only the first one will be displayed.  Example usage:
 * 

var p = new Ext.Panel({
    title: 'Fit Layout',
    layout:'fit',
    items: {
        title: 'Inner Panel',
        html: '<p>This is the inner panel content</p>',
        border: false
    }
});

 */
Ext.layout.FitLayout = Ext.extend(Ext.layout.ContainerLayout, {
    // private
    monitorResize:true,

    type: 'fit',

    getLayoutTargetSize : function() {
        var target = this.container.getLayoutTarget();
        if (!target) {
            return {};
        }
        // Style Sized (scrollbars not included)
        return target.getStyleSize();
    },

    // private
    onLayout : function(ct, target){
        Ext.layout.FitLayout.superclass.onLayout.call(this, ct, target);
        if(!ct.collapsed){
            this.setItemSize(this.activeItem || ct.items.itemAt(0), this.getLayoutTargetSize());
        }
    },

    // private
    setItemSize : function(item, size){
        if(item && size.height > 0){ // display none?
            item.setSize(size);
        }
    }
});
Ext.Container.LAYOUTS['fit'] = Ext.layout.FitLayout;