Move some more WM functionality down into ash.

http://crbug.com/108457
TEST=none
TBR=sky
Review URL: http://codereview.chromium.org/9035001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@115721 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 58 insertions, 0 deletions

diff --git a/ash/wm/root_window_layout_manager.h b/ash/wm/root_window_layout_manager.h
new file mode 100644
index 0000000..91d9717
--- /dev/null
+++ b/ash/wm/root_window_layout_manager.h
@@ -0,0 +1,58 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ASH_WM_ROOT_WINDOW_LAYOUT_MANAGER_H_
+#define ASH_WM_ROOT_WINDOW_LAYOUT_MANAGER_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "ui/aura/layout_manager.h"
+
+namespace aura {
+class Window;
+}
+namespace gfx {
+class Rect;
+}
+namespace views {
+class Widget;
+}
+
+namespace aura_shell {
+namespace internal {
+
+// A layout manager for the root window.
+// Resizes all of its immediate children to fill the bounds of the root window.
+class RootWindowLayoutManager : public aura::LayoutManager {
+ public:
+  explicit RootWindowLayoutManager(aura::Window* owner);
+  virtual ~RootWindowLayoutManager();
+
+  void set_background_widget(views::Widget* background_widget) {
+    background_widget_ = background_widget;
+  }
+
+  // Overridden from aura::LayoutManager:
+  virtual void OnWindowResized() OVERRIDE;
+  virtual void OnWindowAddedToLayout(aura::Window* child) OVERRIDE;
+  virtual void OnWillRemoveWindowFromLayout(aura::Window* child) OVERRIDE;
+  virtual void OnChildWindowVisibilityChanged(aura::Window* child,
+                                              bool visible) OVERRIDE;
+  virtual void SetChildBounds(aura::Window* child,
+                              const gfx::Rect& requested_bounds) OVERRIDE;
+
+ private:
+  aura::Window* owner_;
+
+  // May be NULL if we're not painting a background.
+  views::Widget* background_widget_;
+
+  DISALLOW_COPY_AND_ASSIGN(RootWindowLayoutManager);
+};
+
+}  // namespace internal
+}  // namespace aura_shell
+
+#endif  // ASH_WM_ROOT_WINDOW_LAYOUT_MANAGER_H_