Undo selection.

ui/views/controls/textfield/textfield_model.h

 // Copyright 2014 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_MODEL_H_
 #define UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_MODEL_H_
 
 #include <stddef.h>
 
 #include <list>
@@ skipping 47 matching lines @@
   // Edit related methods.
 
   const base::string16& text() const { return render_text_->text(); }
   // Sets the text. Returns true if the text has been modified.  The current
   // composition text will be confirmed first.  Setting the same text will not
   // add edit history because it's not user visible change nor user-initiated
   // change. This allow a client code to set the same text multiple times
   // without worrying about messing edit history.
   bool SetText(const base::string16& new_text);
 
-  gfx::RenderText* render_text() { return render_text_.get(); }
+  gfx::RenderText* render_text() const { return render_text_.get(); }
 
   // Inserts given |new_text| at the current cursor position.
   // The current composition text will be cleared.
   void InsertText(const base::string16& new_text) {
     InsertTextInternal(new_text, false);
   }
 
   // Inserts a character at the current cursor position.
   void InsertChar(base::char16 c) {
     InsertTextInternal(base::string16(&c, 1), true);
@@ skipping 169 matching lines @@
   void ExecuteAndRecordInsert(const base::string16& new_text, bool mergeable);
 
   // Adds or merge |edit| into edit history. Return true if the edit
   // has been merged and must be deleted after redo.
   bool AddOrMergeEditHistory(internal::Edit* edit);
 
   // Modify the text buffer in following way:
   // 1) Delete the string from |delete_from| to |delte_to|.
   // 2) Insert the |new_text| at the index |new_text_insert_at|.
   //    Note that the index is after deletion.
-  // 3) Move the cursor to |new_cursor_pos|.
+  // 3) Select |selection_range|.
   void ModifyText(size_t delete_from,
                   size_t delete_to,
                   const base::string16& new_text,
                   size_t new_text_insert_at,
-                  size_t new_cursor_pos);
+                  gfx::Range selection_range);
 
   void ClearComposition();
 
   // The TextfieldModel::Delegate instance should be provided by the owner.
   Delegate* delegate_;
 
   // The stylized text, cursor, selection, and the visual layout model.
   std::unique_ptr<gfx::RenderText> render_text_;
 
   // The composition range.
@@ skipping 15 matching lines @@
   //   2) new edit is added. (redo history is cleared)
   //   3) redone all undone edits.
   EditHistory::iterator current_edit_;
 
   DISALLOW_COPY_AND_ASSIGN(TextfieldModel);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_MODEL_H_