[cros, Aura] Refresh status area widget bounds on StatusAreaView layout.

Make ShelfLayoutController a ShelfLayoutManager for launcher, status windows.

BUG=105661
TEST=Manual. Status area is represented with all icons on Aura.

Review URL: http://codereview.chromium.org/8743014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@113185 0039d316-1c4b-4281-b951-d872f2087c98

11 files changed, 211 insertions, 49 deletions

diff --git a/ui/aura_shell/aura_shell.gyp b/ui/aura_shell/aura_shell.gyp
index 656c536..74f9431 100644
--- a/ui/aura_shell/aura_shell.gyp
+++ b/ui/aura_shell/aura_shell.gyp
@@ -80,8 +80,8 @@
         'shadow.h',
         'shadow_controller.cc',
         'shadow_controller.h',
-        'shelf_layout_controller.cc',
-        'shelf_layout_controller.h',
+        'shelf_layout_manager.cc',
+        'shelf_layout_manager.h',
         'shell.cc',
         'shell.h',
         'shell_accelerator_controller.cc',
@@ -97,6 +97,8 @@
         'show_state_controller.cc',
         'stacking_controller.cc',
         'stacking_controller.h',
+        'status_area_layout_manager.cc',
+        'status_area_layout_manager.h',
         'status_area_view.cc',
         'status_area_view.h',
         'toplevel_frame_view.cc',
diff --git a/ui/aura_shell/desktop_layout_manager.cc b/ui/aura_shell/desktop_layout_manager.cc
index d54e186..7c05e1b 100644
--- a/ui/aura_shell/desktop_layout_manager.cc
+++ b/ui/aura_shell/desktop_layout_manager.cc
@@ -5,7 +5,6 @@
 #include "ui/aura_shell/desktop_layout_manager.h"
 
 #include "ui/aura/window.h"
-#include "ui/aura_shell/shelf_layout_controller.h"
 #include "ui/views/widget/widget.h"
 
 namespace aura_shell {
@@ -16,8 +15,7 @@ namespace internal {
 
 DesktopLayoutManager::DesktopLayoutManager(aura::Window* owner)
     : owner_(owner),
-      background_widget_(NULL),
-      shelf_(NULL) {
+      background_widget_(NULL) {
 }
 
 DesktopLayoutManager::~DesktopLayoutManager() {
@@ -35,9 +33,6 @@ void DesktopLayoutManager::OnWindowResized() {
     (*i)->SetBounds(fullscreen_bounds);
 
   background_widget_->SetBounds(fullscreen_bounds);
-
-  if (shelf_)
-    shelf_->LayoutShelf();
 }
 
 void DesktopLayoutManager::OnWindowAddedToLayout(aura::Window* child) {
@@ -55,6 +50,5 @@ void DesktopLayoutManager::SetChildBounds(aura::Window* child,
   SetChildBoundsDirect(child, requested_bounds);
 }
 
-
 }  // namespace internal
 }  // namespace aura_shell
diff --git a/ui/aura_shell/desktop_layout_manager.h b/ui/aura_shell/desktop_layout_manager.h
index 7af3039..80efb19 100644
--- a/ui/aura_shell/desktop_layout_manager.h
+++ b/ui/aura_shell/desktop_layout_manager.h
@@ -23,8 +23,6 @@ class Widget;
 namespace aura_shell {
 namespace internal {
 
-class ShelfLayoutController;
-
 // A layout manager for the root window.
 // Resizes all of its immediate children to fill the bounds of the root window.
 class DesktopLayoutManager : public aura::LayoutManager {
@@ -32,8 +30,6 @@ class DesktopLayoutManager : public aura::LayoutManager {
   explicit DesktopLayoutManager(aura::Window* owner);
   virtual ~DesktopLayoutManager();
 
-  void set_shelf(ShelfLayoutController* shelf) { shelf_ = shelf; }
-
   void set_background_widget(views::Widget* background_widget) {
     background_widget_ = background_widget;
   }
@@ -52,8 +48,6 @@ class DesktopLayoutManager : public aura::LayoutManager {
 
   views::Widget* background_widget_;
 
-  ShelfLayoutController* shelf_;
-
   DISALLOW_COPY_AND_ASSIGN(DesktopLayoutManager);
 };
 
diff --git a/ui/aura_shell/shelf_layout_controller.cc b/ui/aura_shell/shelf_layout_manager.cc
index d26af3c..c01d112 100644
--- a/ui/aura_shell/shelf_layout_controller.cc
+++ b/ui/aura_shell/shelf_layout_manager.cc
@@ -2,8 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ui/aura_shell/shelf_layout_controller.h"
+#include "ui/aura_shell/shelf_layout_manager.h"
 
+#include "base/auto_reset.h"
 #include "ui/aura/desktop.h"
 #include "ui/aura/screen_aura.h"
 #include "ui/gfx/compositor/layer.h"
@@ -21,9 +22,13 @@ ui::Layer* GetLayer(views::Widget* widget) {
 
 }  // namespace
 
-ShelfLayoutController::ShelfLayoutController(views::Widget* launcher,
-                                             views::Widget* status)
+////////////////////////////////////////////////////////////////////////////////
+// ShelfLayoutManager, public:
+
+ShelfLayoutManager::ShelfLayoutManager(views::Widget* launcher,
+                                       views::Widget* status)
     : animating_(false),
+      in_layout_(false),
       visible_(true),
       max_height_(-1),
       launcher_(launcher),
@@ -34,12 +39,14 @@ ShelfLayoutController::ShelfLayoutController(views::Widget* launcher,
   GetLayer(launcher)->GetAnimator()->AddObserver(this);
 }
 
-ShelfLayoutController::~ShelfLayoutController() {
+
+ShelfLayoutManager::~ShelfLayoutManager() {
   // Do not try to remove observer from layer as the Launcher is
   // already deleted.
 }
 
-void ShelfLayoutController::LayoutShelf() {
+void ShelfLayoutManager::LayoutShelf() {
+  AutoReset<bool> auto_reset_in_layout(&in_layout_, true);
   StopAnimating();
   TargetBounds target_bounds;
   float target_opacity = visible_ ? 1.0f : 0.0f;
@@ -52,7 +59,7 @@ void ShelfLayoutController::LayoutShelf() {
       target_bounds.work_area_insets);
 }
 
-void ShelfLayoutController::SetVisible(bool visible) {
+void ShelfLayoutManager::SetVisible(bool visible) {
   bool current_visibility = animating_ ? !visible_ : visible_;
   if (visible == current_visibility)
     return;  // Nothing changed.
@@ -68,7 +75,34 @@ void ShelfLayoutController::SetVisible(bool visible) {
   // |visible_| is updated once the animation completes.
 }
 
-void ShelfLayoutController::StopAnimating() {
+////////////////////////////////////////////////////////////////////////////////
+// ShelfLayoutManager, aura::LayoutManager implementation:
+
+void ShelfLayoutManager::OnWindowResized() {
+  LayoutShelf();
+}
+
+void ShelfLayoutManager::OnWindowAddedToLayout(aura::Window* child) {
+}
+
+void ShelfLayoutManager::OnWillRemoveWindowFromLayout(aura::Window* child) {
+}
+
+void ShelfLayoutManager::OnChildWindowVisibilityChanged(aura::Window* child,
+                                                        bool visible) {
+}
+
+void ShelfLayoutManager::SetChildBounds(aura::Window* child,
+                                        const gfx::Rect& requested_bounds) {
+  SetChildBoundsDirect(child, requested_bounds);
+  if (!in_layout_)
+    LayoutShelf();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// ShelfLayoutManager, private:
+
+void ShelfLayoutManager::StopAnimating() {
   if (animating_) {
     animating_ = false;
     visible_ = !visible_;
@@ -76,8 +110,8 @@ void ShelfLayoutController::StopAnimating() {
   GetLayer(launcher_)->GetAnimator()->StopAnimating();
 }
 
-void ShelfLayoutController::CalculateTargetBounds(bool visible,
-                                                  TargetBounds* target_bounds) {
+void ShelfLayoutManager::CalculateTargetBounds(bool visible,
+                                               TargetBounds* target_bounds) {
   const gfx::Rect& available_bounds(aura::Desktop::GetInstance()->bounds());
   int y = available_bounds.bottom() - (visible ? max_height_ : 0);
   gfx::Rect status_bounds(status_->GetWindowScreenBounds());
@@ -94,16 +128,16 @@ void ShelfLayoutController::CalculateTargetBounds(bool visible,
     target_bounds->work_area_insets = gfx::Insets(0, 0, max_height_, 0);
 }
 
-void ShelfLayoutController::AnimateWidgetTo(views::Widget* widget,
-                                            const gfx::Rect& target_bounds,
-                                            float target_opacity) {
+void ShelfLayoutManager::AnimateWidgetTo(views::Widget* widget,
+                                         const gfx::Rect& target_bounds,
+                                         float target_opacity) {
   ui::Layer* layer = GetLayer(widget);
   ui::LayerAnimator::ScopedSettings animation_setter(layer->GetAnimator());
   widget->SetBounds(target_bounds);
   layer->SetOpacity(target_opacity);
 }
 
-void ShelfLayoutController::OnLayerAnimationEnded(
+void ShelfLayoutManager::OnLayerAnimationEnded(
     const ui::LayerAnimationSequence* sequence) {
   if (!animating_)
     return;
diff --git a/ui/aura_shell/shelf_layout_controller.h b/ui/aura_shell/shelf_layout_manager.h
index a675699..2c46867 100644
--- a/ui/aura_shell/shelf_layout_controller.h
+++ b/ui/aura_shell/shelf_layout_manager.h
@@ -2,12 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef UI_AURA_SHELL_SHELF_LAYOUT_CONTROLLER_H_
-#define UI_AURA_SHELL_SHELF_LAYOUT_CONTROLLER_H_
+#ifndef UI_AURA_SHELL_SHELF_LAYOUT_MANAGER_H_
+#define UI_AURA_SHELL_SHELF_LAYOUT_MANAGER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "ui/aura/layout_manager.h"
 #include "ui/gfx/compositor/layer_animation_observer.h"
 #include "ui/gfx/insets.h"
 #include "ui/gfx/rect.h"
@@ -19,13 +20,17 @@ class Widget;
 namespace aura_shell {
 namespace internal {
 
-// ShelfLayoutController is responsible for showing and hiding the launcher and
-// status area as well as positioning them.
-class ShelfLayoutController : public ui::LayerAnimationObserver {
+// ShelfLayoutManager is a layout manager responsible for the launcher.
+// Also supports showing and hiding the launcher/status area
+// as well as positioning them.
+class ShelfLayoutManager : public aura::LayoutManager,
+                           public ui::LayerAnimationObserver {
  public:
-  ShelfLayoutController(views::Widget* launcher,
-                        views::Widget* status);
-  virtual ~ShelfLayoutController();
+  ShelfLayoutManager(views::Widget* launcher,
+                     views::Widget* status);
+  virtual ~ShelfLayoutManager();
+
+  bool in_layout() const { return in_layout_; }
 
   // Stops any animations and sets the bounds of the launcher and status
   // widgets.
@@ -34,6 +39,15 @@ class ShelfLayoutController : public ui::LayerAnimationObserver {
   // Sets the visbility of the shelf to |visible|.
   void SetVisible(bool visible);
 
+  // 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:
   struct TargetBounds {
     gfx::Rect launcher_bounds;
@@ -64,6 +78,10 @@ class ShelfLayoutController : public ui::LayerAnimationObserver {
   // Are we animating?
   bool animating_;
 
+  // True when inside LayoutShelf method. Used to prevent calling LayoutShelf
+  // again from SetChildBounds().
+  bool in_layout_;
+
   // Current visibility. When the visibility changes this field is reset once
   // the animation completes.
   bool visible_;
@@ -74,10 +92,10 @@ class ShelfLayoutController : public ui::LayerAnimationObserver {
   views::Widget* launcher_;
   views::Widget* status_;
 
-  DISALLOW_COPY_AND_ASSIGN(ShelfLayoutController);
+  DISALLOW_COPY_AND_ASSIGN(ShelfLayoutManager);
 };
 
 }  // namespace internal
 }  // namespace aura_shell
 
-#endif  // UI_AURA_SHELL_SHELF_LAYOUT_CONTROLLER_H_
+#endif  // UI_AURA_SHELL_SHELF_LAYOUT_MANAGER_H_
diff --git a/ui/aura_shell/shell.cc b/ui/aura_shell/shell.cc
index ded7967..53acecb 100644
--- a/ui/aura_shell/shell.cc
+++ b/ui/aura_shell/shell.cc
@@ -10,6 +10,7 @@
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/drag_drop_client.h"
 #include "ui/aura/desktop.h"
+#include "ui/aura/layout_manager.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_types.h"
 #include "ui/aura_shell/app_list.h"
@@ -21,7 +22,7 @@
 #include "ui/aura_shell/launcher/launcher.h"
 #include "ui/aura_shell/modal_container_layout_manager.h"
 #include "ui/aura_shell/shadow_controller.h"
-#include "ui/aura_shell/shelf_layout_controller.h"
+#include "ui/aura_shell/shelf_layout_manager.h"
 #include "ui/aura_shell/shell_accelerator_controller.h"
 #include "ui/aura_shell/shell_accelerator_filter.h"
 #include "ui/aura_shell/shell_delegate.h"
@@ -29,6 +30,7 @@
 #include "ui/aura_shell/shell_tooltip_manager.h"
 #include "ui/aura_shell/shell_window_ids.h"
 #include "ui/aura_shell/stacking_controller.h"
+#include "ui/aura_shell/status_area_layout_manager.h"
 #include "ui/aura_shell/toplevel_layout_manager.h"
 #include "ui/aura_shell/toplevel_window_event_filter.h"
 #include "ui/aura_shell/workspace_controller.h"
@@ -204,9 +206,15 @@ void Shell::Init() {
   if (!status_widget)
     status_widget = internal::CreateStatusArea();
 
-  shelf_layout_controller_.reset(new internal::ShelfLayoutController(
-      launcher_->widget(), status_widget));
-  desktop_layout->set_shelf(shelf_layout_controller_.get());
+  internal::ShelfLayoutManager* shelf_layout_manager =
+      new internal::ShelfLayoutManager(launcher_->widget(), status_widget);
+  GetContainer(aura_shell::internal::kShellWindowId_LauncherContainer)->
+      SetLayoutManager(shelf_layout_manager);
+
+  internal::StatusAreaLayoutManager* status_area_layout_manager =
+      new internal::StatusAreaLayoutManager(shelf_layout_manager);
+  GetContainer(aura_shell::internal::kShellWindowId_StatusContainer)->
+      SetLayoutManager(status_area_layout_manager);
 
   if (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kAuraNoShadows))
     shadow_controller_.reset(new internal::ShadowController());
@@ -217,7 +225,7 @@ void Shell::Init() {
     internal::ToplevelLayoutManager* toplevel_layout_manager =
         new internal::ToplevelLayoutManager();
     default_container->SetLayoutManager(toplevel_layout_manager);
-    toplevel_layout_manager->set_shelf(shelf_layout_controller_.get());
+    toplevel_layout_manager->set_shelf(shelf_layout_manager);
   }
 
   // Force a layout.
diff --git a/ui/aura_shell/shell.h b/ui/aura_shell/shell.h
index ae5f7c1..ca8d2bf 100644
--- a/ui/aura_shell/shell.h
+++ b/ui/aura_shell/shell.h
@@ -35,7 +35,6 @@ namespace internal {
 class AppList;
 class DragDropController;
 class ShadowController;
-class ShelfLayoutController;
 class ShellAcceleratorFilter;
 class WorkspaceController;
 }
@@ -112,7 +111,6 @@ class AURA_SHELL_EXPORT Shell {
 
   scoped_ptr<internal::DragDropController> drag_drop_controller_;
   scoped_ptr<internal::WorkspaceController> workspace_controller_;
-  scoped_ptr<internal::ShelfLayoutController> shelf_layout_controller_;
   scoped_ptr<internal::ShadowController> shadow_controller_;
 
   // An event filter that pre-handles global accelerators.
diff --git a/ui/aura_shell/status_area_layout_manager.cc b/ui/aura_shell/status_area_layout_manager.cc
new file mode 100644
index 0000000..0ac94ed
--- /dev/null
+++ b/ui/aura_shell/status_area_layout_manager.cc
@@ -0,0 +1,62 @@
+// 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.
+
+#include "ui/aura_shell/status_area_layout_manager.h"
+
+#include "base/auto_reset.h"
+#include "ui/aura_shell/shelf_layout_manager.h"
+
+namespace aura_shell {
+namespace internal {
+
+////////////////////////////////////////////////////////////////////////////////
+// StatusAreaLayoutManager, public:
+
+StatusAreaLayoutManager::StatusAreaLayoutManager(ShelfLayoutManager* shelf)
+    : in_layout_(false),
+      shelf_(shelf) {
+}
+
+StatusAreaLayoutManager::~StatusAreaLayoutManager() {
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// StatusAreaLayoutManager, aura::LayoutManager implementation:
+
+void StatusAreaLayoutManager::OnWindowResized() {
+  LayoutStatusArea();
+}
+
+void StatusAreaLayoutManager::OnWindowAddedToLayout(aura::Window* child) {
+}
+
+void StatusAreaLayoutManager::OnWillRemoveWindowFromLayout(
+    aura::Window* child) {
+}
+
+void StatusAreaLayoutManager::OnChildWindowVisibilityChanged(
+    aura::Window* child, bool visible) {
+}
+
+void StatusAreaLayoutManager::SetChildBounds(
+    aura::Window* child, const gfx::Rect& requested_bounds) {
+  SetChildBoundsDirect(child, requested_bounds);
+  if (!in_layout_)
+    LayoutStatusArea();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// StatusAreaLayoutManager, private:
+
+void StatusAreaLayoutManager::LayoutStatusArea() {
+  // Shelf layout manager may be already doing layout.
+  if (shelf_->in_layout())
+    return;
+
+  AutoReset<bool> auto_reset_in_layout(&in_layout_, true);
+  shelf_->LayoutShelf();
+}
+
+}  // internal
+}  // aura_shell
diff --git a/ui/aura_shell/status_area_layout_manager.h b/ui/aura_shell/status_area_layout_manager.h
new file mode 100644
index 0000000..a5984b0
--- /dev/null
+++ b/ui/aura_shell/status_area_layout_manager.h
@@ -0,0 +1,52 @@
+// 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 UI_AURA_SHELL_STATUS_AREA_LAYOUT_MANAGER_H_
+#define UI_AURA_SHELL_STATUS_AREA_LAYOUT_MANAGER_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "ui/aura/layout_manager.h"
+
+namespace aura_shell {
+namespace internal {
+
+class ShelfLayoutManager;
+
+// StatusAreaLayoutManager is a layout manager responsible for the status area.
+// In any case when status area needs relayout it redirects this call to
+// ShelfLayoutManager.
+class StatusAreaLayoutManager : public aura::LayoutManager {
+ public:
+  explicit StatusAreaLayoutManager(ShelfLayoutManager* shelf);
+  virtual ~StatusAreaLayoutManager();
+
+  // 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:
+  // Updates layout of the status area. Effectively calls ShelfLayoutManager
+  // to update layout of the shelf.
+  void LayoutStatusArea();
+
+  // True when inside LayoutStatusArea method.
+  // Used to prevent calling itself again from SetChildBounds().
+  bool in_layout_;
+
+  ShelfLayoutManager* shelf_;
+
+  DISALLOW_COPY_AND_ASSIGN(StatusAreaLayoutManager);
+};
+
+}  // namespace internal
+}  // namespace aura_shell
+
+#endif  // UI_AURA_SHELL_STATUS_AREA_LAYOUT_MANAGER_H_
diff --git a/ui/aura_shell/toplevel_layout_manager.cc b/ui/aura_shell/toplevel_layout_manager.cc
index 6c6e715..05d5f47 100644
--- a/ui/aura_shell/toplevel_layout_manager.cc
+++ b/ui/aura_shell/toplevel_layout_manager.cc
@@ -7,7 +7,7 @@
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/window.h"
 #include "ui/aura_shell/property_util.h"
-#include "ui/aura_shell/shelf_layout_controller.h"
+#include "ui/aura_shell/shelf_layout_manager.h"
 #include "ui/aura_shell/workspace/workspace.h"
 #include "ui/aura_shell/workspace/workspace_manager.h"
 #include "ui/base/ui_base_types.h"
diff --git a/ui/aura_shell/toplevel_layout_manager.h b/ui/aura_shell/toplevel_layout_manager.h
index 4c66ce7..a02b8b1 100644
--- a/ui/aura_shell/toplevel_layout_manager.h
+++ b/ui/aura_shell/toplevel_layout_manager.h
@@ -17,7 +17,7 @@
 namespace aura_shell {
 namespace internal {
 
-class ShelfLayoutController;
+class ShelfLayoutManager;
 
 // ToplevelLayoutManager is the LayoutManager installed on a container that
 // hosts what the shell considers to be top-level windows. It is used if the
@@ -29,7 +29,7 @@ class AURA_SHELL_EXPORT ToplevelLayoutManager : public aura::LayoutManager,
   ToplevelLayoutManager();
   virtual ~ToplevelLayoutManager();
 
-  void set_shelf(ShelfLayoutController* shelf) { shelf_ = shelf; }
+  void set_shelf(ShelfLayoutManager* shelf) { shelf_ = shelf; }
 
   // LayoutManager overrides:
   virtual void OnWindowResized() OVERRIDE;
@@ -58,7 +58,7 @@ class AURA_SHELL_EXPORT ToplevelLayoutManager : public aura::LayoutManager,
   // Set of windows we're listening to.
   Windows windows_;
 
-  ShelfLayoutController* shelf_;
+  ShelfLayoutManager* shelf_;
 
   DISALLOW_COPY_AND_ASSIGN(ToplevelLayoutManager);
 };