ui/views/controls/prefix_delegate.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_VIEWS_CONTROLS_PREFIX_DELEGATE_H_
   6 #define UI_VIEWS_CONTROLS_PREFIX_DELEGATE_H_
   7
   8 #include "ui/views/view.h"
   9
  10 namespace views {
  11
  12 // An interface used to expose lists of items for selection by text input.
  13 class VIEWS_EXPORT PrefixDelegate : public View {
  14  public:
  15   // Returns the total number of selectable items.
  16   virtual int GetRowCount() = 0;
  17
  18   // Returns the row of the currently selected item, or -1 if no item is
  19   // selected.
  20   virtual int GetSelectedRow() = 0;
  21
  22   // Sets the selection to the specified row.
  23   virtual void SetSelectedRow(int row) = 0;
  24
  25   // Returns the item at the specified row.
  26   virtual base::string16 GetTextForRow(int row) = 0;
  27
  28  protected:
  29   ~PrefixDelegate() override {}
  30 };
  31
  32 } // namespace views
  33
  34 #endif // UI_VIEWS_CONTROLS_PREFIX_DELEGATE_H_