Relanding focus manager refactoring

chrome/browser/views/tab_contents/tab_contents_view_win.h

 // Copyright (c) 2006-2008 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 CHROME_BROWSER_VIEWS_TAB_CONTENTS_TAB_CONTENTS_VIEW_WIN_H_
 #define CHROME_BROWSER_VIEWS_TAB_CONTENTS_TAB_CONTENTS_VIEW_WIN_H_
 
 #include "base/gfx/size.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/tab_contents/tab_contents_view.h"
 #include "views/widget/widget_win.h"
 
 class RenderViewContextMenuWin;
 class SadTabView;
 struct WebDropData;
 class WebDropTarget;
 
 // Windows-specific implementation of the TabContentsView. It is a HWND that
 // contains all of the contents of the tab and associated child views.
 class TabContentsViewWin : public TabContentsView,
                            public views::WidgetWin {
  public:
   // The corresponding TabContents is passed in the constructor, and manages our
   // lifetime. This doesn't need to be the case, but is this way currently
   // because that's what was easiest when they were split.
   explicit TabContentsViewWin(TabContents* tab_contents);
   virtual ~TabContentsViewWin();
 
+  // Reset the native parent of this view to NULL.  Unparented windows should
+  // not receive any messages.
+  virtual void Unparent();

[Ben Goodger (Google), 2009/06/26 21:18:08]

doesn't need to be virtual

+
   // TabContentsView implementation --------------------------------------------
 
   virtual void CreateView();
   virtual RenderWidgetHostView* CreateViewForWidget(
       RenderWidgetHost* render_widget_host);
   virtual gfx::NativeView GetNativeView() const;
   virtual gfx::NativeView GetContentNativeView() const;
   virtual gfx::NativeWindow GetTopLevelNativeWindow() const;
   virtual void GetContainerBounds(gfx::Rect* out) const;
   virtual void OnContentsDestroy();
   virtual void SetPageTitle(const std::wstring& title);
   virtual void OnTabCrashed();
   virtual void SizeContents(const gfx::Size& size);
   virtual void Focus();
   virtual void SetInitialFocus();
   virtual void StoreFocus();
   virtual void RestoreFocus();
 
   // Backend implementation of RenderViewHostDelegate::View.
   virtual void ShowContextMenu(const ContextMenuParams& params);
   virtual void StartDragging(const WebDropData& drop_data);
   virtual void UpdateDragCursor(bool is_drop_target);
   virtual void GotFocus();
   virtual void TakeFocus(bool reverse);
   virtual void HandleKeyboardEvent(const NativeWebKeyboardEvent& event);
 
+  // WidgetWin overridde.
+  virtual views::FocusManager* GetFocusManager();
+
  private:
   // Windows events ------------------------------------------------------------
 
   // Overrides from WidgetWin.
   virtual void OnDestroy();
   virtual void OnHScroll(int scroll_type, short position, HWND scrollbar);
   virtual void OnMouseLeave();
   virtual LRESULT OnMouseRange(UINT msg, WPARAM w_param, LPARAM l_param);
   virtual void OnPaint(HDC junk_dc);
   virtual LRESULT OnReflectedMessage(UINT msg, WPARAM w_param, LPARAM l_param);
@@ skipping 32 matching lines @@
 
   // Whether to ignore the next CHAR keyboard event.
   bool ignore_next_char_event_;
 
   // The id used in the ViewStorage to store the last focused view.
   int last_focused_view_storage_id_;
 
   // The context menu. Callbacks are asynchronous so we need to keep it around.
   scoped_ptr<RenderViewContextMenuWin> context_menu_;
 
+  // The FocusManager associated with this tab.  Stored as it is not directly
+  // accessible when unparented.
+  views::FocusManager* focus_manager_;
+
   DISALLOW_COPY_AND_ASSIGN(TabContentsViewWin);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_TAB_CONTENTS_TAB_CONTENTS_VIEW_WIN_H_