Every layout is composed of one or more Ext.Container elements internally, and ContainerLayout provides the basic foundation
for all other layout classes in GWT-Ext. It is a non-visual class that simply provides the base logic required for a Container
to function as a layout.
An optional extra CSS class that will be added to the container (defaults to ''). This can be useful for adding
customized styles to the container or any of its children using standard CSS rules.
Parameters: extraCls - an optional extra CSS class that will be added to the container (defaults to '').
setRenderHidden
public void setRenderHidden(boolean renderHidden)(Code)
True to hide each contained item on render (defaults to false).
Parameters: renderHidden - true to hide each contained item on render (defaults to false).