native_web_contents_modal_dialog_manager_views.h 3.3 KB

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  1. // Copyright 2016 The Chromium Authors. All rights reserved.
  2. // Use of this source code is governed by a BSD-style license that can be
  3. // found in the LICENSE file.
  4. #ifndef COMPONENTS_CONSTRAINED_WINDOW_NATIVE_WEB_CONTENTS_MODAL_DIALOG_MANAGER_VIEWS_H_
  5. #define COMPONENTS_CONSTRAINED_WINDOW_NATIVE_WEB_CONTENTS_MODAL_DIALOG_MANAGER_VIEWS_H_
  6. #include <set>
  7. #include "base/memory/raw_ptr.h"
  8. #include "components/web_modal/modal_dialog_host.h"
  9. #include "components/web_modal/single_web_contents_dialog_manager.h"
  10. #include "ui/gfx/native_widget_types.h"
  11. #include "ui/views/widget/widget_observer.h"
  12. namespace views {
  13. class Widget;
  14. }
  15. namespace constrained_window {
  16. // Class for parenting a tab-modal views dialog off of a views browser.
  17. class NativeWebContentsModalDialogManagerViews
  18. : public web_modal::SingleWebContentsDialogManager,
  19. public web_modal::ModalDialogHostObserver,
  20. public views::WidgetObserver {
  21. public:
  22. NativeWebContentsModalDialogManagerViews(
  23. gfx::NativeWindow dialog,
  24. web_modal::SingleWebContentsDialogManagerDelegate* native_delegate);
  25. NativeWebContentsModalDialogManagerViews(
  26. const NativeWebContentsModalDialogManagerViews&) = delete;
  27. NativeWebContentsModalDialogManagerViews& operator=(
  28. const NativeWebContentsModalDialogManagerViews&) = delete;
  29. ~NativeWebContentsModalDialogManagerViews() override;
  30. // Sets up this object to manage the |dialog_|. Registers for closing events
  31. // in order to notify the delegate.
  32. void ManageDialog();
  33. // web_modal::SingleWebContentsDialogManager:
  34. void Show() override;
  35. void Hide() override;
  36. void Close() override;
  37. void Focus() override;
  38. void Pulse() override;
  39. // web_modal::ModalDialogHostObserver:
  40. void OnPositionRequiresUpdate() override;
  41. void OnHostDestroying() override;
  42. // views::WidgetObserver:
  43. // NOTE(wittman): OnWidgetClosing is overriden to ensure that, when the widget
  44. // is explicitly closed, the destruction occurs within the same call
  45. // stack. This avoids event races that lead to non-deterministic destruction
  46. // ordering in e.g. the print preview dialog. OnWidgetDestroying is overridden
  47. // because OnWidgetClosing is *only* invoked on explicit close, not when the
  48. // widget is implicitly destroyed due to its parent being closed. This
  49. // situation occurs with app windows. WidgetClosing removes the observer, so
  50. // only one of these two functions is ever invoked for a given widget.
  51. void OnWidgetClosing(views::Widget* widget) override;
  52. void OnWidgetDestroying(views::Widget* widget) override;
  53. void HostChanged(web_modal::WebContentsModalDialogHost* new_host) override;
  54. gfx::NativeWindow dialog() override;
  55. protected:
  56. web_modal::SingleWebContentsDialogManagerDelegate* native_delegate() {
  57. return native_delegate_;
  58. }
  59. static views::Widget* GetWidget(gfx::NativeWindow dialog);
  60. private:
  61. void WidgetClosing(views::Widget* widget);
  62. raw_ptr<web_modal::SingleWebContentsDialogManagerDelegate> native_delegate_;
  63. gfx::NativeWindow dialog_;
  64. raw_ptr<web_modal::WebContentsModalDialogHost> host_ = nullptr;
  65. bool host_destroying_ = false;
  66. std::set<views::Widget*> observed_widgets_;
  67. std::set<views::Widget*> shown_widgets_;
  68. };
  69. } // namespace constrained_window
  70. #endif // COMPONENTS_CONSTRAINED_WINDOW_NATIVE_WEB_CONTENTS_MODAL_DIALOG_MANAGER_VIEWS_H_