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// 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.
#include "ui/views/examples/combobox_example.h"
#include <memory>
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "ui/gfx/geometry/insets.h"
#include "ui/views/controls/combobox/combobox.h"
#include "ui/views/examples/examples_window.h"
#include "ui/views/layout/box_layout.h"
namespace views {
namespace examples {
namespace {
// A combobox model implementation that generates a list of "Item <index>".
class ComboboxModelExample : public ui::ComboboxModel {
public:
ComboboxModelExample() = default;
~ComboboxModelExample() override = default;
private:
// ui::ComboboxModel:
int GetItemCount() const override { return 10; }
base::string16 GetItemAt(int index) override {
return base::UTF8ToUTF16(base::StringPrintf("%c item", 'A' + index));
}
DISALLOW_COPY_AND_ASSIGN(ComboboxModelExample);
};
} // namespace
ComboboxExample::ComboboxExample() : ExampleBase("Combo Box") {}
ComboboxExample::~ComboboxExample() = default;
void ComboboxExample::CreateExampleView(View* container) {
combobox_ = new Combobox(std::make_unique<ComboboxModelExample>());
combobox_->set_listener(this);
combobox_->SetSelectedIndex(3);
auto* disabled_combobox =
new Combobox(std::make_unique<ComboboxModelExample>());
disabled_combobox->set_listener(this);
disabled_combobox->SetSelectedIndex(4);
disabled_combobox->SetEnabled(false);
container->SetLayoutManager(std::make_unique<BoxLayout>(
BoxLayout::Orientation::kVertical, gfx::Insets(10, 0), 5));
container->AddChildView(combobox_);
container->AddChildView(disabled_combobox);
}
void ComboboxExample::OnPerformAction(Combobox* combobox) {
DCHECK_EQ(combobox, combobox_);
PrintStatus("Selected: %s",
base::UTF16ToUTF8(
combobox->model()->GetItemAt(combobox->GetSelectedIndex()))
.c_str());
}
} // namespace examples
} // namespace views
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