Password support for NativeTextfieldViews, in the model

ui/views/controls/textfield/textfield_views_model.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_VIEWS_MODEL_H_
 #define UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_VIEWS_MODEL_H_
 #pragma once
 
 #include <list>
 #include <vector>
@@ skipping 49 matching lines @@
 
    protected:
     virtual ~Delegate();
   };
 
   explicit TextfieldViewsModel(Delegate* delegate);
   virtual ~TextfieldViewsModel();
 
   // Edit related methods.
 
-  const string16& GetText() const;
+  const string16& GetText() const { return 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 string16& text);
 
+  // In an obscured (password) field, all text is drawn as asterisks or bullets.
+  bool is_obscured() const { return obscured_; }
+  void SetObscured(bool obscured);
+
   gfx::RenderText* render_text() { return render_text_.get(); }
 
   // Inserts given |text| at the current cursor position.
   // The current composition text will be cleared.
   void InsertText(const string16& text) {
     InsertTextInternal(text, false);
   }
 
   // Inserts a character at the current cursor position.
   void InsertChar(char16 c) {
@@ skipping 190 matching lines @@
   //    Note that the index is after deletion.
   // 3) Move the cursor to |new_cursor_pos|.
   void ModifyText(size_t delete_from,
                   size_t delete_to,
                   const string16& new_text,
                   size_t new_text_insert_at,
                   size_t new_cursor_pos);
 
   void ClearComposition();
 
+  void SetTextInternal(const string16& text);
+
+  // Like GetText() except that it returns asterisks or bullets if this is an
+  // obscured field.
+  string16 GetDisplayText() const;
+
+  // Functions for converting between indices into the text and indices into the
+  // displayed text (which might be a bunch of asterisks).
+  size_t FromDisplayIndex(size_t index) const;
+  size_t ToDisplayIndex(size_t index) const;
+  ui::Range FromDisplayRange(ui::Range range) const;
+  ui::Range ToDisplayRange(ui::Range range) const;
+  gfx::SelectionModel FromDisplaySelection(
+      const gfx::SelectionModel& model) const;
+  gfx::SelectionModel ToDisplaySelection(
+      const gfx::SelectionModel& model) const;
+
+  // The current text.
+  string16 text_;
+
+  // True if this is an obscured (password) field.
+  bool obscured_;
+
   // Pointer to a TextfieldViewsModel::Delegate instance, should be provided by
   // the View object.
   Delegate* delegate_;
 
   // The stylized text, cursor, selection, and the visual layout model.
   scoped_ptr<gfx::RenderText> render_text_;
 
   typedef std::list<internal::Edit*> EditHistory;
   EditHistory edit_history_;
 
   // An iterator that points to the current edit that can be undone.
   // This iterator moves from the |end()|, meaining no edit to undo,
   // to the last element (one before |end()|), meaning no edit to redo.
   //  There is no edit to undo (== end()) when:
   // 1) in initial state. (nothing to undo)
   // 2) very 1st edit is undone.
   // 3) all edit history is removed.
   //  There is no edit to redo (== last element or no element) when:
   // 1) in initial state. (nothing to redo)
   // 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  // UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_VIEWS_MODEL_H_