src/ui/views/examples/combobox_example.cc

   1 // Copyright (c) 2012 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 #include "ui/views/examples/combobox_example.h"
   6
   7 #include "base/strings/stringprintf.h"
   8 #include "base/strings/utf_string_conversions.h"
   9 #include "ui/views/controls/combobox/combobox.h"
  10 #include "ui/views/layout/fill_layout.h"
  11
  12 namespace views {
  13 namespace examples {
  14
  15 ComboboxModelExample::ComboboxModelExample() {
  16 }
  17
  18 ComboboxModelExample::~ComboboxModelExample() {
  19 }
  20
  21 int ComboboxModelExample::GetItemCount() const {
  22   return 10;
  23 }
  24
  25 string16 ComboboxModelExample::GetItemAt(int index) {
  26   return UTF8ToUTF16(base::StringPrintf("Item %d", index));
  27 }
  28
  29 ComboboxExample::ComboboxExample() : ExampleBase("Combo Box"), combobox_(NULL) {
  30 }
  31
  32 ComboboxExample::~ComboboxExample() {
  33   // Delete |combobox_| first as it references |combobox_model_|.
  34   delete combobox_;
  35   combobox_ = NULL;
  36 }
  37
  38 void ComboboxExample::CreateExampleView(View* container) {
  39   combobox_ = new Combobox(&combobox_model_);
  40   combobox_->set_listener(this);
  41   combobox_->SetSelectedIndex(3);
  42
  43   container->SetLayoutManager(new FillLayout);
  44   container->AddChildView(combobox_);
  45 }
  46
  47 void ComboboxExample::OnSelectedIndexChanged(Combobox* combobox) {
  48   DCHECK_EQ(combobox_, combobox);
  49   PrintStatus("Selected: %s", UTF16ToUTF8(combobox_model_.GetItemAt(
  50       combobox->selected_index())).c_str());
  51 }
  52
  53 }  // namespace examples
  54 }  // namespace views