Merge from layout management branch.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18649 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/interface/GroupView.cpp

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2006, Ingo Weinhold <[email protected]>.
+ * All rights reserved. Distributed under the terms of the MIT License.
+ */
+
+#include <GroupView.h>
+
+
+// constructor
+BGroupView::BGroupView(enum orientation orientation, float spacing)
+	: BView(NULL, 0, new BGroupLayout(orientation, spacing))
+{
+	SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
+}
+
+// destructor
+BGroupView::~BGroupView()
+{
+}
+
+// SetLayout
+void
+BGroupView::SetLayout(BLayout* layout)
+{
+	// only BGroupLayouts are allowed
+	if (!dynamic_cast<BGroupLayout*>(layout))
+		return;
+
+	BView::SetLayout(layout);
+}
+
+// GroupLayout
+BGroupLayout*
+BGroupView::GroupLayout() const
+{
+	return dynamic_cast<BGroupLayout*>(GetLayout());
+}