views: Make view::Views::GetPreferredSize() const.

ui/views/controls/combobox/combobox.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 UI_VIEWS_CONTROLS_COMBOBOX_COMBOBOX_H_
 #define UI_VIEWS_CONTROLS_COMBOBOX_COMBOBOX_H_
 
 #include <string>
 
 #include "base/memory/weak_ptr.h"
@@ skipping 75 matching lines @@
   // Set the accessible name of the combobox.
   void SetAccessibleName(const base::string16& name);
 
   // Visually marks the combobox as having an invalid value selected.
   // When invalid, it paints with white text on a red background.
   // Callers are responsible for restoring validity with selection changes.
   void SetInvalid(bool invalid);
   bool invalid() const { return invalid_; }
 
   // Overridden from View:
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
+  virtual gfx::Size GetPreferredSize() const OVERRIDE;
   virtual const char* GetClassName() const OVERRIDE;
   virtual bool SkipDefaultKeyEventProcessing(const ui::KeyEvent& e) OVERRIDE;
   virtual bool OnKeyPressed(const ui::KeyEvent& e) OVERRIDE;
   virtual bool OnKeyReleased(const ui::KeyEvent& e) OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
   virtual void OnFocus() OVERRIDE;
   virtual void OnBlur() OVERRIDE;
   virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
   virtual ui::TextInputClient* GetTextInputClient() OVERRIDE;
   virtual void Layout() OVERRIDE;
 
   // Overridden from MenuDelegate:
   virtual bool IsItemChecked(int id) const OVERRIDE;
   virtual bool IsCommandEnabled(int id) const OVERRIDE;
   virtual void ExecuteCommand(int id) OVERRIDE;
-  virtual bool GetAccelerator(int id, ui::Accelerator* accelerator) OVERRIDE;
+  virtual bool GetAccelerator(int id,
+                              ui::Accelerator* accelerator) const OVERRIDE;
 
   // Overridden from PrefixDelegate:
   virtual int GetRowCount() OVERRIDE;
   virtual int GetSelectedRow() OVERRIDE;
   virtual void SetSelectedRow(int row) OVERRIDE;
   virtual base::string16 GetTextForRow(int row) OVERRIDE;
 
   // Overriden from ComboboxModelObserver:
   virtual void OnComboboxModelChanged(ui::ComboboxModel* model) OVERRIDE;
 
@@ skipping 70 matching lines @@
 
   // Like MenuButton, we use a time object in order to keep track of when the
   // combobox was closed. The time is used for simulating menu behavior; that
   // is, if the menu is shown and the button is pressed, we need to close the
   // menu. There is no clean way to get the second click event because the
   // menu is displayed using a modal loop and, unlike regular menus in Windows,
   // the button is not part of the displayed menu.
   base::Time closed_time_;
 
   // The maximum dimensions of the content in the dropdown
-  gfx::Size content_size_;
+  mutable gfx::Size content_size_;
 
   // The painters or images that are used when |style_| is STYLE_BUTTONS. The
   // first index means the state of unfocused or focused.
   // The images are owned by ResourceBundle.
   scoped_ptr<Painter> body_button_painters_[2][Button::STATE_COUNT];
   std::vector<const gfx::ImageSkia*>
       menu_button_images_[2][Button::STATE_COUNT];
 
   // The transparent buttons to handle events and render buttons. These are
   // placed on top of this combobox as child views, accept event and manage the
   // button states. These are not rendered but when |style_| is
   // STYLE_NOTIFY_ON_CLICK, a Combobox renders the button images according to
   // these button states.
   // The base View takes the ownerships of these as child views.
   CustomButton* text_button_;
   CustomButton* arrow_button_;
 
   // Used for making calbacks.
   base::WeakPtrFactory<Combobox> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Combobox);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_COMBOBOX_COMBOBOX_H_