It is time.

ui/views/window/dialog_delegate.h

-// 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.
-
-#ifndef UI_VIEWS_WINDOW_DIALOG_DELEGATE_H_
-#define UI_VIEWS_WINDOW_DIALOG_DELEGATE_H_
-
-#include "base/compiler_specific.h"
-#include "base/strings/string16.h"
-#include "ui/accessibility/ax_enums.h"
-#include "ui/base/models/dialog_model.h"
-#include "ui/base/ui_base_types.h"
-#include "ui/views/widget/widget_delegate.h"
-
-namespace views {
-
-class DialogClientView;
-
-///////////////////////////////////////////////////////////////////////////////
-//
-// DialogDelegate
-//
-//  DialogDelegate is an interface implemented by objects that wish to show a
-//  dialog box Window. The window that is displayed uses this interface to
-//  determine how it should be displayed and notify the delegate object of
-//  certain events.
-//
-///////////////////////////////////////////////////////////////////////////////
-class VIEWS_EXPORT DialogDelegate : public ui::DialogModel,
-                                    public WidgetDelegate {
- public:
-  DialogDelegate();
-  virtual ~DialogDelegate();
-
-  // Same as CreateDialogWidgetWithBounds() with an empty |bounds|.
-  static Widget* CreateDialogWidget(WidgetDelegate* delegate,
-                                    gfx::NativeWindow context,
-                                    gfx::NativeView parent);
-
-  // Create a dialog widget with the specified |context| or |parent|.
-  // If |bounds| is not empty, used to initially place the dialog, otherwise
-  // a default location is used.
-  static Widget* CreateDialogWidgetWithBounds(WidgetDelegate* delegate,
-                                              gfx::NativeWindow context,
-                                              gfx::NativeView parent,
-                                              const gfx::Rect& bounds);
-
-  // Override this function to display an extra view adjacent to the buttons.
-  // Overrides may construct the view; this will only be called once per dialog.
-  virtual View* CreateExtraView();
-
-  // Override this function to display an extra view in the titlebar.
-  // Overrides may construct the view; this will only be called once per dialog.
-  // Note: this only works for new style dialogs.
-  virtual View* CreateTitlebarExtraView();
-
-  // Override this function to display a footnote view below the buttons.
-  // Overrides may construct the view; this will only be called once per dialog.
-  virtual View* CreateFootnoteView();
-
-  // For Dialog boxes, if there is a "Cancel" button or no dialog button at all,
-  // this is called when the user presses the "Cancel" button or the Esc key.
-  // It can also be called on a close action if |Close| has not been
-  // overridden. This function should return true if the window can be closed
-  // after it returns, or false if it must remain open.
-  virtual bool Cancel();
-
-  // For Dialog boxes, this is called when the user presses the "OK" button,
-  // or the Enter key. It can also be called on a close action if |Close|
-  // has not been overridden. This function should return true if the window
-  // can be closed after it returns, or false if it must remain open.
-  // If |window_closing| is true, it means that this handler is
-  // being called because the window is being closed (e.g.  by Window::Close)
-  // and there is no Cancel handler, so Accept is being called instead.
-  virtual bool Accept(bool window_closing);
-  virtual bool Accept();
-
-  // Called when the user closes the window without selecting an option,
-  // e.g. by pressing the close button on the window or using a window manager
-  // gesture. By default, this calls Accept() if the only button in the dialog
-  // is Accept, Cancel() otherwise. This function should return true if the
-  // window can be closed after it returns, or false if it must remain open.
-  virtual bool Close();
-
-  // Overridden from ui::DialogModel:
-  virtual base::string16 GetDialogLabel() const override;
-  virtual base::string16 GetDialogTitle() const override;
-  virtual int GetDialogButtons() const override;
-  virtual int GetDefaultDialogButton() const override;
-  virtual bool ShouldDefaultButtonBeBlue() const override;
-  virtual base::string16 GetDialogButtonLabel(
-      ui::DialogButton button) const override;
-  virtual bool IsDialogButtonEnabled(ui::DialogButton button) const override;
-
-  // Overridden from WidgetDelegate:
-  virtual View* GetInitiallyFocusedView() override;
-  virtual DialogDelegate* AsDialogDelegate() override;
-  virtual ClientView* CreateClientView(Widget* widget) override;
-  virtual NonClientFrameView* CreateNonClientFrameView(Widget* widget) override;
-
-  // Create a frame view using the new dialog style.
-  static NonClientFrameView* CreateDialogFrameView(Widget* widget);
-
-  // Returns whether this particular dialog should use the new dialog style.
-  virtual bool UseNewStyleForThisDialog() const;
-
-  // Called when the window has been closed.
-  virtual void OnClosed() {}
-
-  // A helper for accessing the DialogClientView object contained by this
-  // delegate's Window.
-  const DialogClientView* GetDialogClientView() const;
-  DialogClientView* GetDialogClientView();
-
- protected:
-  // Overridden from WidgetDelegate:
-  virtual ui::AXRole GetAccessibleWindowRole() const override;
-
- private:
-  // A flag indicating whether this dialog supports the new style.
-  bool supports_new_style_;
-};
-
-// A DialogDelegate implementation that is-a View. Used to override GetWidget()
-// to call View's GetWidget() for the common case where a DialogDelegate
-// implementation is-a View. Note that DialogDelegateView is not owned by
-// view's hierarchy and is expected to be deleted on DeleteDelegate call.
-class VIEWS_EXPORT DialogDelegateView : public DialogDelegate,
-                                        public View {
- public:
-  DialogDelegateView();
-  virtual ~DialogDelegateView();
-
-  // Overridden from DialogDelegate:
-  virtual void DeleteDelegate() override;
-  virtual Widget* GetWidget() override;
-  virtual const Widget* GetWidget() const override;
-  virtual View* GetContentsView() override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(DialogDelegateView);
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_WINDOW_DIALOG_DELEGATE_H_