Add focus rules for Ash. They are empty for now. I will begin migrating code...

Add focus rules for Ash. They are empty for now. I will begin migrating code over from ActivationController once I have a flag to turn this on.

http://crbug.com/162100
R=sky@chromium.org
Review URL: https://codereview.chromium.org/11414252

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@170479 0039d316-1c4b-4281-b951-d872f2087c98

ash/ash.gyp

@@ -273,6 +273,8 @@
         'wm/always_on_top_controller.h',
         'wm/ash_activation_controller.cc',
         'wm/ash_activation_controller.h',
+        'wm/ash_focus_rules.cc',
+        'wm/ash_focus_rules.h',
         'wm/base_layout_manager.cc',
         'wm/base_layout_manager.h',
         'wm/boot_splash_screen.cc',

ash/wm/ash_focus_rules.cc

+// Copyright (c) 2012 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.
+
+#include "ash/wm/ash_focus_rules.h"
+
+#include "ui/aura/window.h"
+
+namespace ash {
+namespace wm {
+
+////////////////////////////////////////////////////////////////////////////////
+// AshFocusRules, public:
+
+AshFocusRules::AshFocusRules() {
+}
+
+AshFocusRules::~AshFocusRules() {
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// AshFocusRules, views::corewm::FocusRules:
+
+bool AshFocusRules::CanActivateWindow(aura::Window* window) {
+  return !!window->parent();
+}
+
+bool AshFocusRules::CanFocusWindow(aura::Window* window) {
+  aura::Window* activatable = GetActivatableWindow(window);
+  return activatable->Contains(window) && window->CanFocus();
+}
+
+aura::Window* AshFocusRules::GetActivatableWindow(aura::Window* window) {
+  return window;
+}
+
+aura::Window* AshFocusRules::GetFocusableWindow(aura::Window* window) {
+  return window;
+}
+
+aura::Window* AshFocusRules::GetNextActivatableWindow(aura::Window* ignore) {
+  return NULL;
+}
+
+aura::Window* AshFocusRules::GetNextFocusableWindow(aura::Window* ignore) {
+  return GetFocusableWindow(ignore->parent());
+}
+
+}  // namespace wm
+}  // namespace ash

ash/wm/ash_focus_rules.h

+// Copyright (c) 2012 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_ASH_FOCUS_RULES_H_
+#define ASH_WM_ASH_FOCUS_RULES_H_
+
+#include "ash/ash_export.h"
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "ui/views/corewm/focus_rules.h"
+
+namespace ash {
+namespace wm {
+
+class ASH_EXPORT AshFocusRules : public views::corewm::FocusRules {
+ public:
+  AshFocusRules();
+  virtual ~AshFocusRules();
+
+ private:
+  // Overridden from views::corewm::FocusRules:
+  virtual bool CanActivateWindow(aura::Window* window) OVERRIDE;
+  virtual bool CanFocusWindow(aura::Window* window) OVERRIDE;
+  virtual aura::Window* GetActivatableWindow(aura::Window* window) OVERRIDE;
+  virtual aura::Window* GetFocusableWindow(aura::Window* window) OVERRIDE;
+  virtual aura::Window* GetNextActivatableWindow(aura::Window* ignore) OVERRIDE;
+  virtual aura::Window* GetNextFocusableWindow(aura::Window* ignore) OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(AshFocusRules);
+};
+
+}  // namespace wm
+}  // namespace ash
+
+#endif  // ASH_WM_ASH_FOCUS_RULES_H_