modification to RenderText for inheritance/SelectionModel

views/controls/textfield/textfield_views_model.h

 // 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_TEXTFIELD_VIEWS_MODEL_H_
 #define VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_VIEWS_MODEL_H_
 #pragma once
 
 #include <list>
 #include <vector>
@@ skipping 116 matching lines @@
   // Cursor related methods.
 
   // Returns the current cursor position.
   size_t GetCursorPosition() const;
 
   // Moves the cursor, see RenderText for additional details.
   // The current composition text will be confirmed.
   void MoveCursorLeft(gfx::BreakType break_type, bool select);
   void MoveCursorRight(gfx::BreakType break_type, bool select);
 
-  // Moves the cursor to the specified |position|.
-  // If |select| is true, it updates the selection accordingly.
-  // The current composition text will be confirmed.
-  bool MoveCursorTo(size_t position, bool select);
+  // Moves the selection to the specified selection in |selection|.
+  // If there is composition text, it will be confirmed, which will update the
+  // selection range, and it overrides the selection_start to which the
+  // selection will move to.
+  bool MoveCursorTo(const gfx::SelectionModel& selection);
 
   // Helper function to call MoveCursorTo on the TextfieldViewsModel.
   bool MoveCursorTo(const gfx::Point& point, bool select);
 
   // Returns the bounds of selected text.
   std::vector<gfx::Rect> GetSelectionBounds() const;
 
   // Selection related method
 
   // Returns the selected text.
   string16 GetSelectedText() const;
 
   void GetSelectedRange(ui::Range* range) const;
 
   // The current composition text will be confirmed. The
   // selection starts with the range's start position,
   // and ends with the range's end position, therefore
   // the cursor position becomes the end position.
   void SelectRange(const ui::Range& range);
 
+  // The current composition text will be confirmed.
+  // render_text_'s selection model is set to |sel|.
+  void SelectSelectionModel(const gfx::SelectionModel& sel);
+
   // Selects all text.
   // The current composition text will be confirmed.
   void SelectAll();
 
   // Selects the word at which the cursor is currently positioned.
   // The current composition text will be confirmed.
   void SelectWord();
 
   // Clears selection.
   // The current composition text will be confirmed.
@@ skipping 149 matching lines @@
   // 2) new edit is added. (redo history is cleared)
   // 3) redone all undone edits.
   EditHistory::iterator current_edit_;
 
   DISALLOW_COPY_AND_ASSIGN(TextfieldViewsModel);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_VIEWS_MODEL_H_