Panel is a container that has specific functionality and structural components that make it the perfect building block for application-oriented user interfaces. The Panel contains bottom, top, and foot toolbars, along with separate header, footer and body sections. It also provides built-in collapsible, closable, maximizable, and minimizable behavior, along with a variety of pre-built tool buttons that can be wired up to provide other customized behavior. Panels can be easily embedded into any kind of ZUL component that is allowed to have children or layout component. Panels also provide specific features like float and move. Unlike {@link Window}, Panels can only be floated and moved inside its parent node, which is not using zk.setVParent() function at client side. In other words, if Panel's parent node is an relative position, the floated panel is only inside its parent, not the whole page. The second difference of {@link Window} is that Panel is not an independent IDspace (by implementing {@link IdSpace}), so the ID of each child can be used throughout the panel.
Events:
onMove, onOpen, onZIndex, onMaximize, onMinimize, and onClose.
Default {@link #getZclass}: z-panel.
@author jumperchen
@since 3.5.0