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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 <utility>
#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_view.h"
#include "ui/views/layout/fill_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(const ComboboxModelExample&) = delete;
ComboboxModelExample& operator=(const ComboboxModelExample&) = delete;
~ComboboxModelExample() override = default;
private:
// ui::ComboboxModel:
int GetItemCount() const override { return 10; }
base::string16 GetItemAt(int index) const override {
return base::UTF8ToUTF16(base::StringPrintf("%c item", 'A' + index));
}
};
} // namespace
ComboboxExample::ComboboxExample() : ExampleBase("Combo Box") {}
ComboboxExample::~ComboboxExample() = default;
void ComboboxExample::CreateExampleView(View* container) {
container->SetLayoutManager(std::make_unique<FillLayout>());
auto view =
Builder<BoxLayoutView>()
.SetOrientation(BoxLayout::Orientation::kVertical)
.SetInsideBorderInsets(gfx::Insets(10, 0))
.SetBetweenChildSpacing(5)
.AddChildren(
{Builder<Combobox>()
.CopyAddressTo(&combobox_)
.SetOwnedModel(std::make_unique<ComboboxModelExample>())
.SetSelectedIndex(3)
.SetCallback(base::BindRepeating(
&ComboboxExample::ValueChanged, base::Unretained(this))),
Builder<Combobox>()
.SetOwnedModel(std::make_unique<ComboboxModelExample>())
.SetEnabled(false)
.SetSelectedIndex(4)
.SetCallback(
base::BindRepeating(&ComboboxExample::ValueChanged,
base::Unretained(this)))})
.Build();
container->AddChildView(std::move(view));
}
void ComboboxExample::ValueChanged() {
PrintStatus("Selected: %s",
base::UTF16ToUTF8(combobox_->GetModel()->GetItemAt(
combobox_->GetSelectedIndex()))
.c_str());
}
} // namespace examples
} // namespace views
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