public boolean contains(DockLayoutNode node) {
		if (node == this) {
			return true;
		}
		for (DockLayoutNode child : mChildren) {
			if (child == node) {
				return true;
			}
			if (child instanceof DockLayout) {
				if (((DockLayout) child).contains(node)) {
					return true;
				}
			}
		}
		return false;
	}