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// Copyright 2012 The Chromium Authors
// 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/base/l10n/l10n_util.h"
#include "ui/gfx/geometry/insets.h"
#include "ui/views/controls/combobox/combobox.h"
#include "ui/views/controls/editable_combobox/editable_combobox.h"
#include "ui/views/examples/examples_window.h"
#include "ui/views/examples/grit/views_examples_resources.h"
#include "ui/views/layout/box_layout_view.h"
#include "ui/views/layout/fill_layout.h"
namespace views::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:
size_t GetItemCount() const override { return 10; }
std::u16string GetItemAt(size_t index) const override {
return base::UTF8ToUTF16(
base::StringPrintf("%c item", static_cast<char>('A' + index)));
}
};
} // namespace
ComboboxExample::ComboboxExample()
: ExampleBase(l10n_util::GetStringUTF8(IDS_COMBOBOX_SELECT_LABEL).c_str()) {
}
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::VH(10, 0))
.SetBetweenChildSpacing(5)
.AddChildren(
Builder<Combobox>()
.CopyAddressTo(&combobox_)
.SetOwnedModel(std::make_unique<ComboboxModelExample>())
.SetSelectedIndex(3)
.SetAccessibleName(
l10n_util::GetStringUTF16(IDS_COMBOBOX_NAME_1))
.SetCallback(base::BindRepeating(
&ComboboxExample::ValueChanged, base::Unretained(this))),
Builder<Combobox>()
.SetOwnedModel(std::make_unique<ComboboxModelExample>())
.SetEnabled(false)
.SetSelectedIndex(4)
.SetAccessibleName(
l10n_util::GetStringUTF16(IDS_COMBOBOX_NAME_2))
.SetCallback(base::BindRepeating(
&ComboboxExample::ValueChanged, base::Unretained(this))),
Builder<EditableCombobox>()
.CopyAddressTo(&editable_combobox_)
.SetModel(std::make_unique<ComboboxModelExample>())
.SetEnabled(true)
.SetAccessibleName(
l10n_util::GetStringUTF16(IDS_COMBOBOX_NAME_2))
.SetCallback(base::BindRepeating(
&ComboboxExample::EditableValueChanged,
base::Unretained(this))))
.Build();
container->AddChildView(std::move(view));
}
void ComboboxExample::ValueChanged() {
PrintStatus("Selected: " + base::UTF16ToUTF8(combobox_->GetModel()->GetItemAt(
combobox_->GetSelectedIndex().value())));
}
void ComboboxExample::EditableValueChanged() {
PrintStatus("Changed: " + base::UTF16ToUTF8(editable_combobox_->GetText()));
}
} // namespace views::examples
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