* Hides all {@link IWindow} placed on deck applying
* {@link IWindow#hideWindow()} method on each of them.
*/
public void hideWindows() {
while (this.deckPanel.getWidgetCount() > 0) {
IWindow window = (IWindow) this.deckPanel.getWidget(this.deckPanel
.getWidgetCount() - 1);
window.hideWindow();
}
}