Implement overscroll support for the virtual keyboard.

content/browser/renderer_host/render_widget_host_view_aura.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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 22 matching lines @@
 #include "ui/aura/client/focus_change_observer.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/aura/window_tree_host_observer.h"
 #include "ui/base/ime/text_input_client.h"
 #include "ui/compositor/compositor.h"
 #include "ui/compositor/compositor_observer.h"
 #include "ui/compositor/compositor_vsync_manager.h"
 #include "ui/compositor/layer_owner_delegate.h"
 #include "ui/gfx/display_observer.h"
 #include "ui/gfx/rect.h"
+#include "ui/keyboard/keyboard_controller_observer.h"
 #include "ui/wm/public/activation_change_observer.h"
 #include "ui/wm/public/activation_delegate.h"
 
 namespace aura {
 class WindowTracker;
 namespace client {
 class ScopedTooltipDisabler;
 }
 }
 
@@ skipping 41 matching lines @@
       public aura::WindowTreeHostObserver,
       public aura::WindowDelegate,
       public aura::client::ActivationDelegate,
       public aura::client::ActivationChangeObserver,
       public aura::client::FocusChangeObserver,
       public aura::client::CursorClientObserver,
       public ImageTransportFactoryObserver,
       public BrowserAccessibilityDelegate,
       public DelegatedFrameEvictorClient,
       public base::SupportsWeakPtr<RenderWidgetHostViewAura>,
-      public cc::DelegatedFrameResourceCollectionClient {
+      public cc::DelegatedFrameResourceCollectionClient,
+      public keyboard::KeyboardControllerObserver {
  public:
   // Displays and controls touch editing elements such as selection handles.
   class TouchEditingClient {
    public:
     TouchEditingClient() {}
 
     // Tells the client to start showing touch editing handles.
     virtual void StartTouchEditing() = 0;
 
     // Notifies the client that touch editing is no longer needed. |quick|
@@ skipping 119 matching lines @@
       bool has_horizontal_scrollbar) OVERRIDE;
   virtual void SetScrollOffsetPinning(
       bool is_pinned_to_left, bool is_pinned_to_right) OVERRIDE;
   virtual gfx::GLSurfaceHandle GetCompositingSurface() OVERRIDE;
   virtual void CreateBrowserAccessibilityManagerIfNeeded() OVERRIDE;
   virtual bool LockMouse() OVERRIDE;
   virtual void UnlockMouse() OVERRIDE;
   virtual void OnSwapCompositorFrame(
       uint32 output_surface_id,
       scoped_ptr<cc::CompositorFrame> frame) OVERRIDE;
+  virtual float GetOverdrawBottomHeight() const OVERRIDE;
 #if defined(OS_WIN)
   virtual void SetParentNativeViewAccessible(
       gfx::NativeViewAccessible accessible_parent) OVERRIDE;
   virtual gfx::NativeViewId GetParentForWindowlessPlugin() const OVERRIDE;
 #endif
 
   // Overridden from ui::TextInputClient:
   virtual void SetCompositionText(
       const ui::CompositionText& composition) OVERRIDE;
   virtual void ConfirmCompositionText() OVERRIDE;
@@ skipping 128 matching lines @@
 
   // Overridden from ui::CompositorVSyncManager::Observer:
   virtual void OnUpdateVSyncParameters(base::TimeTicks timebase,
                                        base::TimeDelta interval) OVERRIDE;
   virtual SkBitmap::Config PreferredReadbackFormat() OVERRIDE;
 
   // Overridden from ui::LayerOwnerObserver:
   virtual void OnLayerRecreated(ui::Layer* old_layer,
                                 ui::Layer* new_layer) OVERRIDE;
 
+  // Overridded from keyboard::KeyboardControllerObserver:
+  virtual void OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) OVERRIDE;
+
  private:
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, SetCompositionText);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, TouchEventState);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, TouchEventSyncAsync);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, SwapNotifiesWindow);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                            SkippedDelegatedFrames);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, OutputSurfaceIdChange);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                            DiscardDelegatedFrames);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                            DiscardDelegatedFramesWithLocking);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest, SoftwareDPIChange);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                            UpdateCursorIfOverSelf);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraCopyRequestTest,
                            DestroyedAfterCopyRequest);
+  FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraKeyboardTest,
+                           OverscrollTest);
 
   class WindowObserver;
   friend class WindowObserver;
 
   // Overridden from ImageTransportFactoryObserver:
   virtual void OnLostResources() OVERRIDE;
 
   // Overridden from BrowserAccessibilityDelegate:
   virtual void SetAccessibilityFocus(int acc_obj_id) OVERRIDE;
   virtual void AccessibilityDoDefaultAction(int acc_obj_id) OVERRIDE;
@@ skipping 314 matching lines @@
 
   base::WeakPtrFactory<RenderWidgetHostViewAura> weak_ptr_factory_;
 
 #if defined(OS_WIN)
   // The LegacyRenderWidgetHostHWND class provides a dummy HWND which is used
   // for accessibility, as the container for windowless plugins like
   // Flash/Silverlight, etc and for legacy drivers for trackpoints/trackpads,
   // etc.
   scoped_ptr<content::LegacyRenderWidgetHostHWND>
       legacy_render_widget_host_HWND_;
+#elif defined(OS_CHROMEOS)
+  // Bounds of onscreen keyboard.
+  gfx::Rect virtual_keyboard_bounds_;
 #endif
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_