prefix_delegate.h

// Copyright 2013 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_PREFIX_DELEGATE_H_
#define UI_VIEWS_CONTROLS_PREFIX_DELEGATE_H_

#include "ui/views/view.h"

namespace views {

// An interface used to expose lists of items for selection by text input.
class VIEWS_EXPORT PrefixDelegate : public View {
 public:
  // Returns the total number of selectable items.
  virtual int GetRowCount() = 0;

  // Returns the row of the currently selected item, or -1 if no item is
  // selected.
  virtual int GetSelectedRow() = 0;

  // Sets the selection to the specified row.
  virtual void SetSelectedRow(int row) = 0;

  // Returns the item at the specified row.
  virtual base::string16 GetTextForRow(int row) = 0;

 protected:
  ~PrefixDelegate() override {}
};

} // namespace views

#endif // UI_VIEWS_CONTROLS_PREFIX_DELEGATE_H_