Adds the ability for classes other than native control to process

chrome/browser/autocomplete/autocomplete_edit_view_win.h

 // Copyright (c) 2010 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_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_WIN_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_WIN_H_
 #pragma once
 
 #include <atlbase.h>
 #include <atlapp.h>
 #include <atlcrack.h>
 #include <atlctrls.h>
 #include <atlmisc.h>
 #include <tom.h>  // For ITextDocument, a COM interface to CRichEditCtrl.
 
 #include "app/menus/simple_menu_model.h"
 #include "base/scoped_comptr_win.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/autocomplete/autocomplete.h"
 #include "chrome/browser/autocomplete/autocomplete_edit_view.h"
 #include "chrome/browser/toolbar_model.h"
 #include "chrome/browser/views/autocomplete/autocomplete_popup_contents_view.h"
 #include "chrome/common/page_transition_types.h"
 #include "gfx/font.h"
+#include "views/controls/menu/menu_2.h"
+#include "views/widget/child_window_message_processor.h"
 #include "webkit/glue/window_open_disposition.h"
-#include "views/controls/menu/menu_2.h"
 
 class Profile;
 class TabContents;
 namespace views {
 class View;
 }
 
+namespace app {
+namespace win {
+class ScopedProp;
+}
+}
+
 class AutocompleteEditController;
 class AutocompleteEditModel;
 class AutocompleteEditView;
 class AutocompletePopupView;
 
 // Provides the implementation of an edit control with a drop-down
 // autocomplete box. The box itself is implemented in autocomplete_popup.cc
 // This file implements the edit box and management for the popup.
 class AutocompleteEditViewWin
     : public CWindowImpl<AutocompleteEditViewWin,
                          CRichEditCtrl,
                          CWinTraits<WS_CHILD | WS_VISIBLE | ES_AUTOHSCROLL |
                                     ES_NOHIDESEL> >,
       public CRichEditCommands<AutocompleteEditViewWin>,
       public menus::SimpleMenuModel::Delegate,
+      public views::ChildWindowMessageProcessor,
       public AutocompleteEditView {
  public:
   struct State {
     State(const CHARRANGE& selection,
           const CHARRANGE& saved_selection_for_focus_change)
         : selection(selection),
           saved_selection_for_focus_change(saved_selection_for_focus_change) {
     }
 
     const CHARRANGE selection;
@@ skipping 108 matching lines @@
   // Handler for external events passed in to us.  The View that owns us may
   // send us events that we should treat as if they were events on us.
   void HandleExternalMsg(UINT msg, UINT flags, const CPoint& screen_point);
 
   // CWindowImpl
   BEGIN_MSG_MAP(AutocompleteEdit)
     MSG_WM_CHAR(OnChar)
     MSG_WM_CONTEXTMENU(OnContextMenu)
     MSG_WM_COPY(OnCopy)
     MSG_WM_CUT(OnCut)
+    MSG_WM_DESTROY(OnDestroy)
     MESSAGE_HANDLER_EX(WM_GETOBJECT, OnGetObject)
     MESSAGE_HANDLER_EX(WM_IME_COMPOSITION, OnImeComposition)
     MESSAGE_HANDLER_EX(WM_IME_NOTIFY, OnImeNotify)
     MSG_WM_KEYDOWN(OnKeyDown)
     MSG_WM_KEYUP(OnKeyUp)
     MSG_WM_KILLFOCUS(OnKillFocus)
     MSG_WM_LBUTTONDBLCLK(OnLButtonDblClk)
     MSG_WM_LBUTTONDOWN(OnLButtonDown)
     MSG_WM_LBUTTONUP(OnLButtonUp)
     MSG_WM_MBUTTONDBLCLK(OnMButtonDblClk)
@@ skipping 18 matching lines @@
 
   // menus::SimpleMenuModel::Delegate
   virtual bool IsCommandIdChecked(int command_id) const;
   virtual bool IsCommandIdEnabled(int command_id) const;
   virtual bool GetAcceleratorForCommandId(int command_id,
                                           menus::Accelerator* accelerator);
   virtual bool IsLabelForCommandIdDynamic(int command_id) const;
   virtual std::wstring GetLabelForCommandId(int command_id) const;
   virtual void ExecuteCommand(int command_id);
 
+  // views::ChildWindowMessageProcessor
+  virtual bool ProcessMessage(UINT message,
+                              WPARAM w_param,
+                              LPARAM l_param,
+                              LRESULT* result);
  private:
   enum MouseButton {
     kLeft  = 0,
     kRight = 1,
   };
 
   // This object freezes repainting of the edit until the object is destroyed.
   // Some methods of the CRichEditCtrl draw synchronously to the screen.  If we
   // don't freeze, the user will see a rapid series of calls to these as
   // flickers.
@@ skipping 35 matching lines @@
                                     int action);
 
   // Returns true if |edit_text| starting at |current_pos| is "://".
   static bool SchemeEnd(LPTSTR edit_text, int current_pos, int length);
 
   // Message handlers
   void OnChar(TCHAR ch, UINT repeat_count, UINT flags);
   void OnContextMenu(HWND window, const CPoint& point);
   void OnCopy();
   void OnCut();
+  void OnDestroy();
   LRESULT OnGetObject(UINT uMsg, WPARAM wparam, LPARAM lparam);
   LRESULT OnImeComposition(UINT message, WPARAM wparam, LPARAM lparam);
   LRESULT OnImeNotify(UINT message, WPARAM wparam, LPARAM lparam);
   void OnKeyDown(TCHAR key, UINT repeat_count, UINT flags);
   void OnKeyUp(TCHAR key, UINT repeat_count, UINT flags);
   void OnKillFocus(HWND focus_wnd);
   void OnLButtonDblClk(UINT keys, const CPoint& point);
   void OnLButtonDown(UINT keys, const CPoint& point);
   void OnLButtonUp(UINT keys, const CPoint& point);
   void OnMButtonDblClk(UINT keys, const CPoint& point);
@@ skipping 232 matching lines @@
   // This interface is useful for accessing the CRichEditCtrl at a low level.
   mutable ITextDocument* text_object_model_;
 
   // This contains the scheme char start and stop indexes that should be
   // striken-out when displaying an insecure scheme.
   url_parse::Component insecure_scheme_component_;
 
   // Instance of accessibility information and handling.
   mutable ScopedComPtr<IAccessible> autocomplete_accessibility_;
 
+  // ScopedProp returned from registering as a ChildWindowMessageProcessor.
+  scoped_ptr<app::win::ScopedProp> message_handler_prop_;
+
   DISALLOW_COPY_AND_ASSIGN(AutocompleteEditViewWin);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_WIN_H_