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// Copyright (c) 2010 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_LISTBOX_LISTBOX_H_
#define VIEWS_CONTROLS_LISTBOX_LISTBOX_H_
#pragma once
#include "build/build_config.h"
#include <string>
#include <vector>
#include "base/string16.h"
#include "views/view.h"
namespace views {
class NativeListboxWrapper;
// A Listbox is a view that displays multiple rows of fixed strings.
// Exactly one of these strings is shown as selected at all times.
class Listbox : public View {
public:
// An interface implemented by an object to let it know that a listbox
// selection has changed.
class Listener {
public:
// This is called if the user changes the current selection of the
// listbox.
virtual void ListboxSelectionChanged(Listbox* sender) = 0;
};
// Creates a new listbox, given the list of strings. |listener| can be NULL.
// Listbox does not take ownership of |listener|.
Listbox(const std::vector<string16>& strings, Listbox::Listener* listener);
virtual ~Listbox();
// Returns the number of rows in the table.
int GetRowCount() const;
// Returns the 0-based index of the currently selected row, or -1 if nothing
// is selected. Note that as soon as a row has been selected once, there will
// always be a selected row.
int SelectedRow() const;
// Selects the specified row. Note that this does NOT call the listener's
// |ListboxSelectionChanged()| method.
void SelectRow(int row);
protected:
virtual NativeListboxWrapper* CreateWrapper();
virtual void ViewHierarchyChanged(bool is_add, View* parent, View* child);
private:
// Data stored in the listbox.
std::vector<string16> strings_;
// Listens to selection changes.
Listbox::Listener* listener_;
// The object that actually implements the table.
NativeListboxWrapper* native_wrapper_;
DISALLOW_COPY_AND_ASSIGN(Listbox);
};
} // namespace views
#endif // VIEWS_CONTROLS_LISTBOX_LISTBOX_H_
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