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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/host/chromeos/message_box.h"
#include <optional>
#include <utility>
#include "base/check.h"
#include "base/check_deref.h"
#include "base/memory/raw_ptr.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/base/models/image_model.h"
#include "ui/base/mojom/dialog_button.mojom.h"
#include "ui/base/mojom/ui_base_types.mojom-shared.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/views/controls/message_box_view.h"
#include "ui/views/widget/widget.h"
#include "ui/views/window/dialog_delegate.h"
namespace remoting {
// MessageBoxCore creates the dialog using the views::DialogWidget. The
// DialogWidget is created by the caller but its lifetime is managed by the
// NativeWidget. The DialogWidget communicates with the caller using the
// DialogDelegateView interface, which must remain valid until DeleteDelegate()
// is called, at which the DialogDelegateView deletes itself.
//
// The MessageBoxCore class is introduced to abstract this awkward ownership
// model. The MessageBoxCore and the MessageBox hold raw references to each
// other, which are invalidated when either side is destroyed.
class MessageBoxCore : public views::DialogDelegateView {
METADATA_HEADER(MessageBoxCore, views::DialogDelegateView)
public:
MessageBoxCore(const std::u16string& title_label,
const std::u16string& message_label,
const std::u16string& ok_label,
const std::u16string& cancel_label,
const std::optional<ui::ImageModel> icon,
MessageBox::ResultCallback result_callback,
MessageBox* message_box);
MessageBoxCore(const MessageBoxCore&) = delete;
MessageBoxCore& operator=(const MessageBoxCore&) = delete;
~MessageBoxCore() override;
void Show(gfx::NativeView parent);
void Hide();
void ChangeParentContainer(gfx::NativeView container);
// views::DialogDelegateView:
ui::mojom::ModalType GetModalType() const override;
std::u16string GetWindowTitle() const override;
views::View* GetContentsView() override;
views::Widget* GetWidget() override;
const views::Widget* GetWidget() const override;
void SetMessageLabel(const std::u16string& message_label);
// Called by MessageBox when it is destroyed.
void OnMessageBoxDestroyed();
private:
const std::u16string title_label_;
MessageBox::ResultCallback result_callback_;
raw_ptr<MessageBox> message_box_;
bool is_shown_ = false;
// Owned by the native widget hierarchy.
raw_ptr<views::MessageBoxView> message_box_view_;
};
MessageBoxCore::MessageBoxCore(const std::u16string& title_label,
const std::u16string& message_label,
const std::u16string& ok_label,
const std::u16string& cancel_label,
const std::optional<ui::ImageModel> icon,
MessageBox::ResultCallback result_callback,
MessageBox* message_box)
: title_label_(title_label),
result_callback_(std::move(result_callback)),
message_box_(message_box),
message_box_view_(new views::MessageBoxView(message_label)) {
DCHECK(message_box_);
SetButtonLabel(ui::mojom::DialogButton::kOk, ok_label);
SetButtonLabel(ui::mojom::DialogButton::kCancel, cancel_label);
if (icon.has_value()) {
SetIcon(*icon);
SetShowIcon(true);
}
auto run_callback = [](MessageBoxCore* core, MessageBox::Result result) {
if (core->result_callback_) {
std::move(core->result_callback_).Run(result);
}
};
SetAcceptCallback(
base::BindOnce(run_callback, base::Unretained(this), MessageBox::OK));
SetCancelCallback(
base::BindOnce(run_callback, base::Unretained(this), MessageBox::CANCEL));
SetCloseCallback(
base::BindOnce(run_callback, base::Unretained(this), MessageBox::CANCEL));
RegisterDeleteDelegateCallback(
RegisterDeleteCallbackPassKey(),
base::BindOnce(
[](MessageBoxCore* dialog) {
if (dialog->message_box_) {
dialog->message_box_->OnMessageBoxCoreDestroying();
}
},
this));
// This should be set as the `message_box_view_` is assumed to be owned by the
// widget created.
SetOwnedByWidget(OwnedByWidgetPassKey());
}
MessageBoxCore::~MessageBoxCore() = default;
void MessageBoxCore::Show(gfx::NativeView parent) {
CHECK(!is_shown_) << "Show() should only be called once.";
is_shown_ = true;
// The widget is owned by the NativeWidget. See comments in widget.h.
views::Widget* widget =
CreateDialogWidget(/* delegate=*/this,
/*context=*/nullptr, /*parent=*/parent);
if (widget) {
widget->Show();
}
}
void MessageBoxCore::ChangeParentContainer(gfx::NativeView parent) {
if (GetWidget()) {
views::Widget::ReparentNativeView(GetWidget()->GetNativeView(),
/*new_parent=*/parent);
}
}
void MessageBoxCore::Hide() {
if (GetWidget()) {
GetWidget()->Close();
}
}
ui::mojom::ModalType MessageBoxCore::GetModalType() const {
return ui::mojom::ModalType::kSystem;
}
std::u16string MessageBoxCore::GetWindowTitle() const {
return title_label_;
}
views::View* MessageBoxCore::GetContentsView() {
return message_box_view_;
}
views::Widget* MessageBoxCore::GetWidget() {
return message_box_view_->GetWidget();
}
const views::Widget* MessageBoxCore::GetWidget() const {
return message_box_view_->GetWidget();
}
void MessageBoxCore::SetMessageLabel(const std::u16string& message_label) {
message_box_view_->SetMessageLabel(message_label);
}
void MessageBoxCore::OnMessageBoxDestroyed() {
DCHECK(message_box_);
message_box_ = nullptr;
// The callback should not be invoked after MessageBox is destroyed.
result_callback_.Reset();
}
BEGIN_METADATA(MessageBoxCore)
END_METADATA
MessageBox::MessageBox(const std::u16string& title_label,
const std::u16string& message_label,
const std::u16string& ok_label,
const std::u16string& cancel_label,
const std::optional<ui::ImageModel> icon,
ResultCallback result_callback)
: core_(new MessageBoxCore(title_label,
message_label,
ok_label,
cancel_label,
std::move(icon),
std::move(result_callback),
this)) {}
void MessageBox::Show() {
core_->Show(nullptr);
}
void MessageBox::ShowInParentContainer(gfx::NativeView parent) {
core_->Show(parent);
}
void MessageBox::ChangeParentContainer(gfx::NativeView parent) {
core_->ChangeParentContainer(parent);
}
void MessageBox::SetMessageLabel(const std::u16string& message_label) {
core_->SetMessageLabel(message_label);
}
views::DialogDelegate& MessageBox::GetDialogDelegate() {
return CHECK_DEREF(core_->AsDialogDelegate());
}
void MessageBox::OnMessageBoxCoreDestroying() {
core_ = nullptr;
}
MessageBox::~MessageBox() {
DCHECK(thread_checker_.CalledOnValidThread());
if (core_) {
core_->OnMessageBoxDestroyed();
core_->Hide();
core_ = nullptr;
}
}
} // namespace remoting
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