/**
* Private handler of ValueChangedListener for MenuTree.
*
* @param itemId The item to handle.
*/
private void menuTreeItemHandler(IntID itemId) {
if (itemId != null) {
MenuItemData itemData = this.menuTree.getItemData(itemId);
ComponentHandler guiHandler = itemData.getSelectComponentHandler();
if (guiHandler != null) {
if (this.layout.getCenter() == null) {
this.layout.setCenter(guiHandler.getComponent());
} else {
if (this.layout.getCenter().equals(guiHandler.getComponent())) {
this.layout.setCenter(null);
} else {
this.layout.setCenter(guiHandler.getComponent());
}
}
} else {
this.layout.setCenter(null);
}
} else {
this.layout.setCenter(null);
}
this.layout.doLayout();
}
