Revert of Remote assistance on Chrome OS Part V - It2MeHost Continue Window

remoting/host/chromeos/message_box.cc

-// Copyright 2014 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 "remoting/host/chromeos/message_box.h"
-
-#include "ui/base/l10n/l10n_util.h"
-#include "ui/views/controls/message_box_view.h"
-#include "ui/views/widget/widget.h"
-#include "ui/views/window/dialog_delegate.h"
-
-namespace remoting {
-
-// MessageBox::Core 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 Core class is introduced to abstract this awkward ownership model.  The
-// Core and the MessageBox hold a raw references to each other, which is
-// invalidated when either side are destroyed.
-class MessageBox::Core : public views::DialogDelegateView {
- public:
-  Core(const base::string16& title_label,
-       const base::string16& message_label,
-       const base::string16& ok_label,
-       const base::string16& cancel_label,
-       ResultCallback result_callback,
-       MessageBox* message_box);
-
-  // Mirrors the public MessageBox interface.
-  void Show();
-  void Hide();
-
-  // views::DialogDelegateView interface.
-  bool Accept() override;
-  bool Cancel() override;
-  ui::ModalType GetModalType() const override;
-  base::string16 GetWindowTitle() const override;
-  base::string16 GetDialogButtonLabel(ui::DialogButton button) const override;
-
-  // views::WidgetDelegate interface.
-  views::View* GetContentsView() override;
-  views::Widget* GetWidget() override;
-  const views::Widget* GetWidget() const override;
-  void DeleteDelegate() override;
-
-  // Called by MessageBox::Core when it is destroyed.
-  void OnMessageBoxDestroyed();
-
- private:
-  const base::string16 title_label_;
-  const base::string16 ok_label_;
-  const base::string16 cancel_label_;
-  ResultCallback result_callback_;
-  MessageBox* message_box_;
-
-  // Owned by the native widget hierarchy.
-  views::MessageBoxView* message_box_view_;
-
-  DISALLOW_COPY_AND_ASSIGN(Core);
-};
-
-MessageBox::Core::Core(const base::string16& title_label,
-                       const base::string16& message_label,
-                       const base::string16& ok_label,
-                       const base::string16& cancel_label,
-                       ResultCallback result_callback,
-                       MessageBox* message_box)
-    : title_label_(title_label),
-      ok_label_(ok_label),
-      cancel_label_(cancel_label),
-      result_callback_(result_callback),
-      message_box_(message_box),
-      message_box_view_(new views::MessageBoxView(
-          views::MessageBoxView::InitParams(message_label))) {
-  DCHECK(message_box_);
-}
-
-void MessageBox::Core::Show() {
-  // The widget is owned by the NativeWidget.  See  comments in widget.h.
-  views::Widget* widget =
-      CreateDialogWidget(this, /* delegate */
-                         nullptr /* parent window*/,
-                         nullptr /* parent view */);
-
-  if (widget) {
-    widget->Show();
-  }
-}
-
-void MessageBox::Core::Hide() {
-  if (GetWidget()) {
-    GetWidget()->Close();
-  }
-}
-
-bool MessageBox::Core::Accept() {
-  if (!result_callback_.is_null()) {
-    base::ResetAndReturn(&result_callback_).Run(OK);
-  }
-  return true /* close the window*/;
-}
-
-bool MessageBox::Core::Cancel() {
-  if (!result_callback_.is_null()) {
-    base::ResetAndReturn(&result_callback_).Run(CANCEL);
-  }
-  return true /* close the window*/;
-}
-
-ui::ModalType MessageBox::Core::GetModalType() const {
-  return ui::MODAL_TYPE_SYSTEM;
-}
-
-base::string16 MessageBox::Core::GetWindowTitle() const {
-  return title_label_;
-}
-
-base::string16 MessageBox::Core::GetDialogButtonLabel(
-    ui::DialogButton button) const {
-  switch (button) {
-    case ui::DIALOG_BUTTON_OK:
-      return ok_label_;
-    case ui::DIALOG_BUTTON_CANCEL:
-      return cancel_label_;
-    default:
-      NOTREACHED();
-      return base::string16();
-  }
-}
-
-views::View* MessageBox::Core::GetContentsView() {
-  return message_box_view_;
-}
-
-views::Widget* MessageBox::Core::GetWidget() {
-  return message_box_view_->GetWidget();
-}
-
-const views::Widget* MessageBox::Core::GetWidget() const {
-  return message_box_view_->GetWidget();
-}
-
-void MessageBox::Core::DeleteDelegate() {
-  if (message_box_) {
-    message_box_->core_ = nullptr;
-  }
-  delete this;
-}
-
-void MessageBox::Core::OnMessageBoxDestroyed() {
-  DCHECK(message_box_);
-  message_box_ = nullptr;
-  // The callback should not be invoked after MessageBox is destroyed.
-  result_callback_.Reset();
-}
-
-MessageBox::MessageBox(const base::string16& title_label,
-                       const base::string16& message_label,
-                       const base::string16& ok_label,
-                       const base::string16& cancel_label,
-                       ResultCallback result_callback)
-    : core_(new Core(title_label,
-                     message_label,
-                     ok_label,
-                     cancel_label,
-                     result_callback,
-                     this)) {
-  thread_checker_.DetachFromThread();
-}
-
-MessageBox::~MessageBox() {
-  if (core_) {
-    core_->OnMessageBoxDestroyed();
-    core_->Hide();
-    core_ = nullptr;
-  }
-}
-
-void MessageBox::Show() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  core_->Show();
-}
-
-void MessageBox::Hide() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  if (core_) {
-    core_->Hide();
-  }
-}
-
-}  // namespace remoting