Reland Merge NativeTextfieldViews into views::Textfield.

ui/views/controls/textfield/textfield.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_TEXTFIELD_TEXTFIELD_H_
 #define UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/string16.h"
-#include "base/time/time.h"
-#include "build/build_config.h"
+#include "base/timer/timer.h"
 #include "third_party/skia/include/core/SkColor.h"
+#include "ui/base/ime/text_input_client.h"
 #include "ui/base/ime/text_input_type.h"
+#include "ui/base/models/simple_menu_model.h"
+#include "ui/base/touch/touch_editing_controller.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 #include "ui/gfx/font_list.h"
-#include "ui/gfx/native_widget_types.h"
+#include "ui/gfx/range/range.h"
 #include "ui/gfx/selection_model.h"
 #include "ui/gfx/text_constants.h"
+#include "ui/views/context_menu_controller.h"
+#include "ui/views/controls/textfield/textfield_views_model.h"
+#include "ui/views/drag_controller.h"
 #include "ui/views/view.h"
 
-#if !defined(OS_LINUX)
-#include "base/logging.h"
-#endif
-
-namespace gfx {
-class Range;
-class ImageSkia;
-}
-
-namespace ui {
-class TextInputClient;
-}  // namespace ui
-
 namespace views {
 
-class ImageView;
-class NativeTextfieldViews;
+class MenuRunner;
 class Painter;
 class TextfieldController;
 
-// This class implements a View that wraps a native text (edit) field.
-class VIEWS_EXPORT Textfield : public View {
+// A views/skia textfield implementation. No platform-specific code is used.
+class VIEWS_EXPORT Textfield : public View,
+                               public TextfieldViewsModel::Delegate,
+                               public ContextMenuController,
+                               public DragController,
+                               public ui::TouchEditable,
+                               public ui::TextInputClient {
  public:
   // The textfield's class name.
   static const char kViewClassName[];
 
   enum StyleFlags {
     STYLE_DEFAULT   = 0,
     STYLE_OBSCURED  = 1 << 0,
     STYLE_LOWERCASE = 1 << 1
   };
 
@@ skipping 10 matching lines @@
 
   // Gets/Sets whether or not the Textfield is read-only.
   bool read_only() const { return read_only_; }
   void SetReadOnly(bool read_only);
 
   // Gets/sets the STYLE_OBSCURED bit, controlling whether characters in this
   // Textfield are displayed as asterisks/bullets.
   bool IsObscured() const;
   void SetObscured(bool obscured);
 
-  // Gets/sets the duration to reveal the last typed char when the obscured bit
-  // is set. A duration of zero effectively disables the feature. Other values
-  // cause the last typed char to be shown for the defined duration. Note this
-  // only works with NativeTextfieldViews.
-  const base::TimeDelta& obscured_reveal_duration() const {
-    return obscured_reveal_duration_;
-  }
-  void set_obscured_reveal_duration(const base::TimeDelta& duration) {
-    obscured_reveal_duration_ = duration;
-  }
-
-  // Gets/Sets the input type of this textfield.
-  ui::TextInputType GetTextInputType() const;
+  // Sets the input type of this textfield.
   void SetTextInputType(ui::TextInputType type);
 
-  // Gets/Sets the text currently displayed in the Textfield.
-  const base::string16& text() const { return text_; }
+  // Gets the text currently displayed in the Textfield.
+  const base::string16& text() const { return model_->text(); }
 
   // Sets the text currently displayed in the Textfield.  This doesn't
   // change the cursor position if the current cursor is within the
   // new text's range, or moves the cursor to the end if the cursor is
   // out of the new text's range.
-  void SetText(const base::string16& text);
+  void SetText(const base::string16& new_text);
 
   // Appends the given string to the previously-existing text in the field.
-  void AppendText(const base::string16& text);
+  void AppendText(const base::string16& new_text);
 
-  // Inserts |text| at the current cursor position, replacing any selected text.
-  void InsertOrReplaceText(const base::string16& text);
+  // Inserts |new_text| at the cursor position, replacing any selected text.
+  void InsertOrReplaceText(const base::string16& new_text);
 
   // Returns the text direction.
   base::i18n::TextDirection GetTextDirection() const;
 
   // Returns the text that is currently selected.
   base::string16 GetSelectedText() const;
 
   // Select the entire text range. If |reversed| is true, the range will end at
   // the logical beginning of the text; this generally shows the leading portion
   // of text that overflows its display area.
   void SelectAll(bool reversed);
 
   // Clears the selection within the edit field and sets the caret to the end.
-  void ClearSelection() const;
+  void ClearSelection();
 
   // Checks if there is any selected text.
   bool HasSelection() const;
 
   // Accessor for |style_|.
   StyleFlags style() const { return style_; }
 
   // Gets/Sets the text color to be used when painting the Textfield.
   // Call |UseDefaultTextColor| to restore the default system color.
   SkColor GetTextColor() const;
   void SetTextColor(SkColor color);
   void UseDefaultTextColor();
 
   // Gets/Sets the background color to be used when painting the Textfield.
   // Call |UseDefaultBackgroundColor| to restore the default system color.
   SkColor GetBackgroundColor() const;
   void SetBackgroundColor(SkColor color);
   void UseDefaultBackgroundColor();
 
   // Gets/Sets whether or not the cursor is enabled.
   bool GetCursorEnabled() const;
   void SetCursorEnabled(bool enabled);
 
   // Gets/Sets the fonts used when rendering the text within the Textfield.
-  const gfx::FontList& font_list() const { return font_list_; }
+  const gfx::FontList& GetFontList() const;
   void SetFontList(const gfx::FontList& font_list);
-  const gfx::Font& GetPrimaryFont() const;
-  void SetFont(const gfx::Font& font);
-
-  // Sets the left and right margin (in pixels) within the text box. On Windows
-  // this is accomplished by packing the left and right margin into a single
-  // 32 bit number, so the left and right margins are effectively 16 bits.
-  void SetHorizontalMargins(int left, int right);
-
-  // Sets the top and bottom margins (in pixels) within the textfield.
-  // NOTE: in most cases height could be changed instead.
-  void SetVerticalMargins(int top, int bottom);
 
   // Sets the default width of the text control. See default_width_in_chars_.
   void set_default_width_in_chars(int default_width) {
     default_width_in_chars_ = default_width;
   }
 
-  // Removes the border from the edit box, giving it a 2D look.
-  bool draw_border() const { return draw_border_; }
-  void RemoveBorder();
-
   // Sets the text to display when empty.
   void set_placeholder_text(const base::string16& text) {
     placeholder_text_ = text;
   }
   virtual base::string16 GetPlaceholderText() const;
 
   SkColor placeholder_text_color() const { return placeholder_text_color_; }
   void set_placeholder_text_color(SkColor color) {
     placeholder_text_color_ = color;
   }
 
-  // Getter for the horizontal margins that were set. Returns false if
-  // horizontal margins weren't set.
-  bool GetHorizontalMargins(int* left, int* right);
-
-  // Getter for the vertical margins that were set. Returns false if vertical
-  // margins weren't set.
-  bool GetVerticalMargins(int* top, int* bottom);
-
-  // Updates all properties on the textfield. This is invoked internally.
-  // Users of Textfield never need to invoke this directly.
-  void UpdateAllProperties();
-
-  // Invoked by the edit control when the value changes. This method set
-  // the text_ member variable to the value contained in edit control.
-  // This is important because the edit control can be replaced if it has
-  // been deleted during a window close.
-  void SyncText();
-
   // Returns whether or not an IME is composing text.
   bool IsIMEComposing() const;
 
   // Gets the selected logical text range.
   const gfx::Range& GetSelectedRange() const;
 
   // Selects the specified logical text range.
   void SelectRange(const gfx::Range& range);
 
   // Gets the text selection model.
@@ skipping 20 matching lines @@
   void ClearEditHistory();
 
   // Set the accessible name of the text field.
   void SetAccessibleName(const base::string16& name);
 
   // Performs the action associated with the specified command id.
   void ExecuteCommand(int command_id);
 
   void SetFocusPainter(scoped_ptr<Painter> focus_painter);
 
-  // Provided only for testing:
-  NativeTextfieldViews* GetTextfieldViewForTesting() const {
-    return textfield_view_;
-  }
-
   // Returns whether there is a drag operation originating from the textfield.
   bool HasTextBeingDragged();
 
-  // Overridden from View:
-  virtual void Layout() OVERRIDE;
+  // View overrides:
+  // TODO(msw): Match declaration and definition order to View.
   virtual int GetBaseline() const OVERRIDE;
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void AboutToRequestFocusFromTabTraversal(bool reverse) OVERRIDE;
   virtual bool SkipDefaultKeyEventProcessing(const ui::KeyEvent& e) OVERRIDE;
   virtual void OnEnabledChanged() OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
-  virtual bool OnKeyPressed(const ui::KeyEvent& e) OVERRIDE;
-  virtual bool OnKeyReleased(const ui::KeyEvent& e) OVERRIDE;
-  virtual bool OnMouseDragged(const ui::MouseEvent& e) OVERRIDE;
+  virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE;
+  virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
+  virtual bool OnMouseDragged(const ui::MouseEvent& event) OVERRIDE;
+  virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE;
   virtual void OnFocus() OVERRIDE;
   virtual void OnBlur() OVERRIDE;
   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
   virtual ui::TextInputClient* GetTextInputClient() OVERRIDE;
   virtual gfx::Point GetKeyboardContextMenuLocation() OVERRIDE;
+  virtual void OnNativeThemeChanged(const ui::NativeTheme* theme) OVERRIDE;
+  virtual const char* GetClassName() const OVERRIDE;
+  virtual gfx::NativeCursor GetCursor(const ui::MouseEvent& event) OVERRIDE;
+  virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
+  virtual bool GetDropFormats(
+      int* formats,
+      std::set<ui::OSExchangeData::CustomFormat>* custom_formats) OVERRIDE;
+  virtual bool CanDrop(const ui::OSExchangeData& data) OVERRIDE;
+  virtual int OnDragUpdated(const ui::DropTargetEvent& event) OVERRIDE;
+  virtual void OnDragExited() OVERRIDE;
+  virtual int OnPerformDrop(const ui::DropTargetEvent& event) OVERRIDE;
+  virtual void OnDragDone() OVERRIDE;
+  virtual void OnBoundsChanged(const gfx::Rect& previous_bounds) OVERRIDE;
+
+  // TextfieldViewsModel::Delegate overrides:
+  virtual void OnCompositionTextConfirmedOrCleared() OVERRIDE;
+
+  // ContextMenuController overrides:
+  virtual void ShowContextMenuForView(View* source,
+                                      const gfx::Point& point,
+                                      ui::MenuSourceType source_type) OVERRIDE;
+
+  // DragController overrides:
+  virtual void WriteDragDataForView(View* sender,
+                                    const gfx::Point& press_pt,
+                                    ui::OSExchangeData* data) OVERRIDE;
+  virtual int GetDragOperationsForView(View* sender,
+                                       const gfx::Point& p) OVERRIDE;
+  virtual bool CanStartDragForView(View* sender,
+                                   const gfx::Point& press_pt,
+                                   const gfx::Point& p) OVERRIDE;
+
+  // ui::TouchEditable overrides:
+  virtual void SelectRect(const gfx::Point& start,
+                          const gfx::Point& end) OVERRIDE;
+  virtual void MoveCaretTo(const gfx::Point& point) OVERRIDE;
+  virtual void GetSelectionEndPoints(gfx::Rect* p1, gfx::Rect* p2) OVERRIDE;
+  virtual gfx::Rect GetBounds() OVERRIDE;
+  virtual gfx::NativeView GetNativeView() const OVERRIDE;
+  virtual void ConvertPointToScreen(gfx::Point* point) OVERRIDE;
+  virtual void ConvertPointFromScreen(gfx::Point* point) OVERRIDE;
+  virtual bool DrawsHandles() OVERRIDE;
+  virtual void OpenContextMenu(const gfx::Point& anchor) OVERRIDE;
+
+  // ui::SimpleMenuModel::Delegate overrides:
+  virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
+  virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;
+  virtual bool GetAcceleratorForCommandId(
+      int command_id,
+      ui::Accelerator* accelerator) OVERRIDE;
+  virtual void ExecuteCommand(int command_id, int event_flags) OVERRIDE;
+
+  // ui::TextInputClient overrides:
+  virtual void SetCompositionText(
+      const ui::CompositionText& composition) OVERRIDE;
+  virtual void ConfirmCompositionText() OVERRIDE;
+  virtual void ClearCompositionText() OVERRIDE;
+  virtual void InsertText(const base::string16& text) OVERRIDE;
+  virtual void InsertChar(base::char16 ch, int flags) OVERRIDE;
+  virtual gfx::NativeWindow GetAttachedWindow() const OVERRIDE;
+  virtual ui::TextInputType GetTextInputType() const OVERRIDE;
+  virtual ui::TextInputMode GetTextInputMode() const OVERRIDE;
+  virtual bool CanComposeInline() const OVERRIDE;
+  virtual gfx::Rect GetCaretBounds() const OVERRIDE;
+  virtual bool GetCompositionCharacterBounds(uint32 index,
+                                             gfx::Rect* rect) const OVERRIDE;
+  virtual bool HasCompositionText() const OVERRIDE;
+  virtual bool GetTextRange(gfx::Range* range) const OVERRIDE;
+  virtual bool GetCompositionTextRange(gfx::Range* range) const OVERRIDE;
+  virtual bool GetSelectionRange(gfx::Range* range) const OVERRIDE;
+  virtual bool SetSelectionRange(const gfx::Range& range) OVERRIDE;
+  virtual bool DeleteRange(const gfx::Range& range) OVERRIDE;
+  virtual bool GetTextFromRange(const gfx::Range& range,
+                                base::string16* text) const OVERRIDE;
+  virtual void OnInputMethodChanged() OVERRIDE;
+  virtual bool ChangeTextDirectionAndLayoutAlignment(
+      base::i18n::TextDirection direction) OVERRIDE;
+  virtual void ExtendSelectionAndDelete(size_t before, size_t after) OVERRIDE;
+  virtual void EnsureCaretInRect(const gfx::Rect& rect) OVERRIDE;
+  virtual void OnCandidateWindowShown() OVERRIDE;
+  virtual void OnCandidateWindowUpdated() OVERRIDE;
+  virtual void OnCandidateWindowHidden() OVERRIDE;
 
  protected:
-  virtual void ViewHierarchyChanged(
-      const ViewHierarchyChangedDetails& details) OVERRIDE;
-  virtual const char* GetClassName() const OVERRIDE;
-
-  // The object that actually implements the native textfield view.
-  // TODO(msw): Merge views::NativeTextfieldViews and views::Textfield classes.
-  NativeTextfieldViews* textfield_view_;
+   // Returns the TextfieldViewsModel's text/cursor/selection rendering model.
+   gfx::RenderText* GetRenderText() const;
 
  private:
-  // Returns the insets to the rectangle where text is actually painted.
-  gfx::Insets GetTextInsets() const;
+  friend class TextfieldTest;
+  friend class TouchSelectionControllerImplTest;
+
+  // Converts the raw text according to the current style, e.g. STYLE_LOWERCASE.
+  base::string16 GetTextForDisplay(const base::string16& raw);
 
   // Handles a request to change the value of this text field from software
   // using an accessibility API (typically automation software, screen readers
   // don't normally use this). Sets the value and clears the selection.
   void AccessibilitySetValue(const base::string16& new_value);
 
+  // Updates the painted background color.
+  void UpdateBackgroundColor();
+
+  // Updates any colors that have not been explicitly set from the theme.
+  void UpdateColorsFromTheme(const ui::NativeTheme* theme);
+
+  // Does necessary updates when the text and/or cursor position changes.
+  void UpdateAfterChange(bool text_changed, bool cursor_changed);
+
+  // A callback function to periodically update the cursor state.
+  void UpdateCursor();
+
+  // Repaint the cursor.
+  void RepaintCursor();
+
+  void PaintTextAndCursor(gfx::Canvas* canvas);
+
+  // Helper function to call MoveCursorTo on the TextfieldViewsModel.
+  bool MoveCursorTo(const gfx::Point& point, bool select);
+
+  // Convenience method to call InputMethod::OnCaretBoundsChanged();
+  void OnCaretBoundsChanged();
+
+  // Convenience method to call TextfieldController::OnBeforeUserAction();
+  void OnBeforeUserAction();
+
+  // Convenience method to call TextfieldController::OnAfterUserAction();
+  void OnAfterUserAction();
+
+  // Calls |model_->Cut()| and notifies TextfieldController on success.
+  bool Cut();
+
+  // Calls |model_->Copy()| and notifies TextfieldController on success.
+  bool Copy();
+
+  // Calls |model_->Paste()| and calls TextfieldController::ContentsChanged()
+  // explicitly if paste succeeded.
+  bool Paste();
+
+  // Utility function to prepare the context menu.
+  void UpdateContextMenu();
+
+  // Tracks the mouse clicks for single/double/triple clicks.
+  void TrackMouseClicks(const ui::MouseEvent& event);
+
+  // Returns true if the current text input type allows access by the IME.
+  bool ImeEditingAllowed() const;
+
+  // Reveals the obscured char at |index| for the given |duration|. If |index|
+  // is -1, existing revealed index will be cleared.
+  void RevealObscuredChar(int index, const base::TimeDelta& duration);
+
+  void CreateTouchSelectionControllerAndNotifyIt();
+
+  // The text model.
+  scoped_ptr<TextfieldViewsModel> model_;
+
   // This is the current listener for events from this Textfield.
   TextfieldController* controller_;
 
   // The mask of style options for this Textfield.
   StyleFlags style_;
 
-  // The fonts used to render the text in the Textfield.
-  gfx::FontList font_list_;
-
-  // The text displayed in the Textfield.
-  base::string16 text_;
-
   // True if this Textfield cannot accept input and is read-only.
   bool read_only_;
 
   // The default number of average characters for the width of this text field.
   // This will be reported as the "desired size". Defaults to 0.
   int default_width_in_chars_;
 
-  // Whether the border is drawn.
-  bool draw_border_;
+  scoped_ptr<Painter> focus_painter_;
 
   // Text color.  Only used if |use_default_text_color_| is false.
   SkColor text_color_;
 
   // Should we use the system text color instead of |text_color_|?
   bool use_default_text_color_;
 
   // Background color.  Only used if |use_default_background_color_| is false.
   SkColor background_color_;
 
   // Should we use the system background color instead of |background_color_|?
   bool use_default_background_color_;
 
-  // Holds inner textfield margins.
-  gfx::Insets margins_;
-
-  // Holds whether margins were set.
-  bool horizontal_margins_were_set_;
-  bool vertical_margins_were_set_;
-
   // Text to display when empty.
   base::string16 placeholder_text_;
 
   // Placeholder text color.
   SkColor placeholder_text_color_;
 
   // The accessible name of the text field.
   base::string16 accessible_name_;
 
   // The input type of this text field.
   ui::TextInputType text_input_type_;
 
   // The duration to reveal the last typed char for obscured textfields.
   base::TimeDelta obscured_reveal_duration_;
 
+  // True if InputMethod::CancelComposition() should not be called.
+  bool skip_input_method_cancel_composition_;
+
+  // The text editing cursor repaint timer and visibility.
+  base::RepeatingTimer<Textfield> cursor_repaint_timer_;
+  bool is_cursor_visible_;
+
+  // The drop cursor is a visual cue for where dragged text will be dropped.
+  bool is_drop_cursor_visible_;
+  gfx::SelectionModel drop_cursor_position_;
+
+  // Is the user potentially dragging and dropping from this view?
+  bool initiating_drag_;
+
+  // State variables used to track double and triple clicks.
+  size_t aggregated_clicks_;
+  base::TimeDelta last_click_time_;
+  gfx::Point last_click_location_;
+  gfx::Range double_click_word_;
+
+  scoped_ptr<ui::TouchSelectionController> touch_selection_controller_;
+
+  // A timer to control the duration of showing the last typed char in
+  // obscured text. When the timer is running, the last typed char is shown
+  // and when the time expires, the last typed char is obscured.
+  base::OneShotTimer<Textfield> obscured_reveal_timer_;
+
+  // Context menu related members.
+  scoped_ptr<ui::SimpleMenuModel> context_menu_contents_;
+  scoped_ptr<views::MenuRunner> context_menu_runner_;
+
   // Used to bind callback functions to this object.
   base::WeakPtrFactory<Textfield> weak_ptr_factory_;
 
-  scoped_ptr<Painter> focus_painter_;
-
   DISALLOW_COPY_AND_ASSIGN(Textfield);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_H_