Implementing context menu for the new views textfield.

views/controls/textfield/native_textfield_views.h

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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 VIEWS_CONTROLS_TEXTFIELD_NATIVE_TEXTFIELD_VIEWS_H_
 #define VIEWS_CONTROLS_TEXTFIELD_NATIVE_TEXTFIELD_VIEWS_H_
 #pragma once
 
+#include "app/menus/simple_menu_model.h"
 #include "base/string16.h"
 #include "base/task.h"
 #include "gfx/font.h"
 #include "views/border.h"
 #include "views/controls/textfield/native_textfield_wrapper.h"
 #include "views/view.h"
 
 namespace gfx {
 class Canvas;
 }  // namespace
 
 namespace views {
 
 class KeyEvent;
+class Menu2;
 class TextfieldViewsModel;
 
 // A views/skia only implementation of NativeTextfieldWrapper.
 // No platform specific code is used.
 // Following features are not yet supported.
 // * BIDI
-// * Context Menu.
 // * IME/i18n support.
 // * X selection (only if we want to support).
 // * STYLE_MULTILINE, STYLE_LOWERCASE text. (These are not used in
 //   chromeos, so we may not need them)
 // * Double click to select word, and triple click to select all.
 // * Undo/Redo
 class NativeTextfieldViews : public views::View,
-                             public NativeTextfieldWrapper {
+                             public views::ContextMenuController,
+                             public NativeTextfieldWrapper,
+                             public menus::SimpleMenuModel::Delegate {
  public:
   explicit NativeTextfieldViews(Textfield* parent);
   ~NativeTextfieldViews();
 
   // views::View overrides:
   virtual bool OnMousePressed(const views::MouseEvent& e);
   virtual bool OnMouseDragged(const views::MouseEvent& e);
   virtual void OnMouseReleased(const views::MouseEvent& e, bool canceled);
   virtual bool OnKeyPressed(const views::KeyEvent& e);
   virtual bool OnKeyReleased(const views::KeyEvent& e);
   virtual void Paint(gfx::Canvas* canvas);
   virtual void DidChangeBounds(const gfx::Rect& previous,
                                const gfx::Rect& current);
   virtual void WillGainFocus();
   virtual void DidGainFocus();
   virtual void WillLoseFocus();
 
+  // views::ContextMenuController overrides:
+  virtual void ShowContextMenu(View* source,
+                               const gfx::Point& p,
+                               bool is_mouse_gesture);
+
   // NativeTextfieldWrapper overrides:
   virtual string16 GetText() const;
   virtual void UpdateText();
   virtual void AppendText(const string16& text);
   virtual string16 GetSelectedText() const;
   virtual void SelectAll();
   virtual void ClearSelection();
   virtual void UpdateBorder();
   virtual void UpdateTextColor();
   virtual void UpdateBackgroundColor();
   virtual void UpdateReadOnly();
   virtual void UpdateFont();
   virtual void UpdateIsPassword();
   virtual void UpdateEnabled();
   virtual gfx::Insets CalculateInsets();
   virtual void UpdateHorizontalMargins();
   virtual void UpdateVerticalMargins();
   virtual bool SetFocus();
   virtual View* GetView();
   virtual gfx::NativeView GetTestingHandle() const;
   virtual bool IsIMEComposing() const;
   virtual bool HandleKeyPressed(const views::KeyEvent& e);
   virtual bool HandleKeyReleased(const views::KeyEvent& e);
   virtual void HandleWillGainFocus();
   virtual void HandleDidGainFocus();
   virtual void HandleWillLoseFocus();
 
+  // menus::SimpleMenuModel::Delegate overrides
+  virtual bool IsCommandIdChecked(int command_id) const;
+  virtual bool IsCommandIdEnabled(int command_id) const;
+  virtual bool GetAcceleratorForCommandId(int command_id,
+                                          menus::Accelerator* accelerator);
+  virtual void ExecuteCommand(int command_id);
+
   // class name of internal
   static const char kViewClassName[];
 
   // Returns true when
   // 1) built with GYP_DEFIENS="touchui=1"
   // 2) enabled by SetEnableTextfieldViews(true)
   // 3) enabled by the command line flag "--enable-textfield-view".
   static bool IsTextfieldViewsEnabled();
   // Enable/Disable TextfieldViews implementation for Textfield.
   static void SetEnableTextfieldViews(bool enabled);
@@ skipping 45 matching lines @@
   // Handle the keyevent.
   bool HandleKeyEvent(const KeyEvent& key_event);
 
   // Utility function. Gets the character corresponding to a keyevent.
   // Returns 0 if the character is not printable.
   char16 GetPrintableChar(const KeyEvent& key_event);
 
   // Find a cusor position for given |point| in this views coordinates.
   size_t FindCursorPosition(const gfx::Point& point) const;
 
+  // Utility function to inform the parent textfield (and its controller if any)
+  // that the text in the textfield has changed.
+  void PropagateTextChange();
+
+  // Utility function to create the context menu if one does not already exist.
+  void InitContextMenuIfRequired();
+
   // The parent textfield, the owner of this object.
   Textfield* textfield_;
 
   // The text model.
   scoped_ptr<TextfieldViewsModel> model_;
 
   // The reference to the border class. The object is owned by View::border_.
   TextfieldBorder* text_border_;
 
   // The x offset for the text to be drawn, without insets;
   int text_offset_;
 
   // Cursor's bounds in the textfield's coordinates.
   gfx::Rect cursor_bounds_;
 
   // True if the textfield is in insert mode.
   bool insert_;
 
   // The drawing state of cursor. True to draw.
   bool is_cursor_visible_;
 
   // A runnable method factory for callback to update the cursor.
   ScopedRunnableMethodFactory<NativeTextfieldViews> cursor_timer_;
 
+  // Context menu and its content list for the textfield.
+  scoped_ptr<menus::SimpleMenuModel> context_menu_contents_;
+  scoped_ptr<Menu2> context_menu_menu_;
+
   DISALLOW_COPY_AND_ASSIGN(NativeTextfieldViews);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_CONTROLS_TEXTFIELD_NATIVE_TEXTFIELD_VIEWS_H_