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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_VIEWS_CONTROLS_MENU_MENU_CONTROLLER_H_ | 5 #ifndef UI_VIEWS_CONTROLS_MENU_MENU_CONTROLLER_H_ |
6 #define UI_VIEWS_CONTROLS_MENU_MENU_CONTROLLER_H_ | 6 #define UI_VIEWS_CONTROLS_MENU_MENU_CONTROLLER_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 | 9 |
10 #include <list> | 10 #include <list> |
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26 #include "ui/views/widget/widget_observer.h" | 26 #include "ui/views/widget/widget_observer.h" |
27 | 27 |
28 namespace ui { | 28 namespace ui { |
29 class OSExchangeData; | 29 class OSExchangeData; |
30 } | 30 } |
31 namespace views { | 31 namespace views { |
32 | 32 |
33 class MenuButton; | 33 class MenuButton; |
34 class MenuHostRootView; | 34 class MenuHostRootView; |
35 class MenuItemView; | 35 class MenuItemView; |
36 class MenuMessageLoop; | |
37 class MouseEvent; | 36 class MouseEvent; |
38 class SubmenuView; | 37 class SubmenuView; |
39 class View; | 38 class View; |
40 | 39 |
41 #if defined(USE_AURA) | 40 #if defined(USE_AURA) |
42 class MenuPreTargetHandler; | 41 class MenuPreTargetHandler; |
43 #endif | 42 #endif |
44 | 43 |
45 namespace internal { | 44 namespace internal { |
46 class MenuControllerDelegate; | 45 class MenuControllerDelegate; |
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116 void Cancel(ExitType type); | 115 void Cancel(ExitType type); |
117 | 116 |
118 // An alternative to Cancel(EXIT_ALL) that can be used with a OneShotTimer. | 117 // An alternative to Cancel(EXIT_ALL) that can be used with a OneShotTimer. |
119 void CancelAll() { Cancel(EXIT_ALL); } | 118 void CancelAll() { Cancel(EXIT_ALL); } |
120 | 119 |
121 // When is_nested_run() this will add a delegate to the stack. The most recent | 120 // When is_nested_run() this will add a delegate to the stack. The most recent |
122 // delegate will be notified. It will be removed upon the exiting of the | 121 // delegate will be notified. It will be removed upon the exiting of the |
123 // nested menu. Ownership is not taken. | 122 // nested menu. Ownership is not taken. |
124 void AddNestedDelegate(internal::MenuControllerDelegate* delegate); | 123 void AddNestedDelegate(internal::MenuControllerDelegate* delegate); |
125 | 124 |
126 // Sets whether the subsequent call to Run is asynchronous. When nesting calls | |
127 // to Run, if a new MenuControllerDelegate has been nested, the previous | |
128 // asynchronous state will be reapplied once nesting has ended. | |
129 void SetAsyncRun(bool is_async); | |
130 | |
131 // Returns the current exit type. This returns a value other than EXIT_NONE if | 125 // Returns the current exit type. This returns a value other than EXIT_NONE if |
132 // the menu is being canceled. | 126 // the menu is being canceled. |
133 ExitType exit_type() const { return exit_type_; } | 127 ExitType exit_type() const { return exit_type_; } |
134 | 128 |
135 // Returns the time from the event which closed the menu - or 0. | 129 // Returns the time from the event which closed the menu - or 0. |
136 base::TimeTicks closing_event_time() const { return closing_event_time_; } | 130 base::TimeTicks closing_event_time() const { return closing_event_time_; } |
137 | 131 |
138 void set_is_combobox(bool is_combobox) { is_combobox_ = is_combobox; } | 132 void set_is_combobox(bool is_combobox) { is_combobox_ = is_combobox; } |
139 | 133 |
140 // Various events, forwarded from the submenu. | 134 // Various events, forwarded from the submenu. |
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531 // it to null. | 525 // it to null. |
532 void SendMouseCaptureLostToActiveView(); | 526 void SendMouseCaptureLostToActiveView(); |
533 | 527 |
534 // Sets/gets the active mouse view. See UpdateActiveMouseView() for details. | 528 // Sets/gets the active mouse view. See UpdateActiveMouseView() for details. |
535 void SetActiveMouseView(View* view); | 529 void SetActiveMouseView(View* view); |
536 View* GetActiveMouseView(); | 530 View* GetActiveMouseView(); |
537 | 531 |
538 // Sets exit type. Calling this can terminate the active nested message-loop. | 532 // Sets exit type. Calling this can terminate the active nested message-loop. |
539 void SetExitType(ExitType type); | 533 void SetExitType(ExitType type); |
540 | 534 |
541 // Terminates the current nested message-loop, if there is any. Returns |true| | 535 // Performs the teardown of menus. This will notifiy the |delegate_|. If |
542 // if any message loop is terminated. | 536 // |exit_type_| is EXIT_ALL all nested runs will be exited. |
543 bool TerminateNestedMessageLoopIfNecessary(); | 537 void ExitMenu(); |
544 | |
545 // Performs the teardown of menus launched with |async_run_|. This will | |
546 // notifiy the |delegate_|. If |exit_type_| is EXIT_ALL all nested | |
547 // asynchronous runs will be exited. | |
548 void ExitAsyncRun(); | |
549 | 538 |
550 // Performs the teardown of the menu launched by Run(). The selected item is | 539 // Performs the teardown of the menu launched by Run(). The selected item is |
551 // returned. | 540 // returned. |
552 MenuItemView* ExitMenuRun(); | 541 MenuItemView* ExitTopMostMenu(); |
553 | 542 |
554 // Handles the mouse location event on the submenu |source|. | 543 // Handles the mouse location event on the submenu |source|. |
555 void HandleMouseLocation(SubmenuView* source, | 544 void HandleMouseLocation(SubmenuView* source, |
556 const gfx::Point& mouse_location); | 545 const gfx::Point& mouse_location); |
557 | 546 |
558 // Sets hot-tracked state to the first focusable descendant view of |item|. | 547 // Sets hot-tracked state to the first focusable descendant view of |item|. |
559 void SetInitialHotTrackedView(MenuItemView* item, | 548 void SetInitialHotTrackedView(MenuItemView* item, |
560 SelectionIncrementDirectionType direction); | 549 SelectionIncrementDirectionType direction); |
561 | 550 |
562 // Updates the current |hot_button_| and its hot tracked state. | 551 // Updates the current |hot_button_| and its hot tracked state. |
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597 int accept_event_flags_; | 586 int accept_event_flags_; |
598 | 587 |
599 // If not empty, it means we're nested. When Run is invoked from within | 588 // If not empty, it means we're nested. When Run is invoked from within |
600 // Run, the current state (state_) is pushed onto menu_stack_. This allows | 589 // Run, the current state (state_) is pushed onto menu_stack_. This allows |
601 // MenuController to restore the state when the nested run returns. | 590 // MenuController to restore the state when the nested run returns. |
602 using NestedState = | 591 using NestedState = |
603 std::pair<State, std::unique_ptr<MenuButton::PressedLock>>; | 592 std::pair<State, std::unique_ptr<MenuButton::PressedLock>>; |
604 std::list<NestedState> menu_stack_; | 593 std::list<NestedState> menu_stack_; |
605 | 594 |
606 // When Run is invoked during an active Run, it may be called from a separate | 595 // When Run is invoked during an active Run, it may be called from a separate |
607 // MenuControllerDelegate. If not empty is means we are nested, and the | 596 // MenuControllerDelegate. If not empty it means we are nested, and the |
608 // stacked delegates should be notified instead of |delegate_|. | 597 // stacked delegates should be notified instead of |delegate_|. |
609 typedef std::pair<internal::MenuControllerDelegate*, bool> NestedDelegate; | 598 std::list<internal::MenuControllerDelegate*> delegate_stack_; |
610 std::list<NestedDelegate> delegate_stack_; | |
611 | 599 |
612 // As the mouse moves around submenus are not opened immediately. Instead | 600 // As the mouse moves around submenus are not opened immediately. Instead |
613 // they open after this timer fires. | 601 // they open after this timer fires. |
614 base::OneShotTimer show_timer_; | 602 base::OneShotTimer show_timer_; |
615 | 603 |
616 // Used to invoke CancelAll(). This is used during drag and drop to hide the | 604 // Used to invoke CancelAll(). This is used during drag and drop to hide the |
617 // menu after the mouse moves out of the of the menu. This is necessitated by | 605 // menu after the mouse moves out of the of the menu. This is necessitated by |
618 // the lack of an ability to detect when the drag has completed from the drop | 606 // the lack of an ability to detect when the drag has completed from the drop |
619 // side. | 607 // side. |
620 base::OneShotTimer cancel_all_timer_; | 608 base::OneShotTimer cancel_all_timer_; |
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659 | 647 |
660 // ViewStorage id used to store the view mouse drag events are forwarded to. | 648 // ViewStorage id used to store the view mouse drag events are forwarded to. |
661 // See UpdateActiveMouseView() for details. | 649 // See UpdateActiveMouseView() for details. |
662 const int active_mouse_view_id_; | 650 const int active_mouse_view_id_; |
663 | 651 |
664 // Current hot tracked child button if any. | 652 // Current hot tracked child button if any. |
665 CustomButton* hot_button_; | 653 CustomButton* hot_button_; |
666 | 654 |
667 internal::MenuControllerDelegate* delegate_; | 655 internal::MenuControllerDelegate* delegate_; |
668 | 656 |
669 // How deep we are in nested message loops. This should be at most 2 (when | |
670 // showing a context menu from a menu). | |
671 int message_loop_depth_; | |
672 | |
673 // The timestamp of the event which closed the menu - or 0 otherwise. | 657 // The timestamp of the event which closed the menu - or 0 otherwise. |
674 base::TimeTicks closing_event_time_; | 658 base::TimeTicks closing_event_time_; |
675 | 659 |
676 // Time when the menu is first shown. | 660 // Time when the menu is first shown. |
677 base::TimeTicks menu_start_time_; | 661 base::TimeTicks menu_start_time_; |
678 | 662 |
679 // If a mouse press triggered this menu, this will have its location (in | 663 // If a mouse press triggered this menu, this will have its location (in |
680 // screen coordinates). Otherwise this will be (0, 0). | 664 // screen coordinates). Otherwise this will be (0, 0). |
681 gfx::Point menu_start_mouse_press_loc_; | 665 gfx::Point menu_start_mouse_press_loc_; |
682 | 666 |
683 // Controls behaviour differences between an asynchronous run, and other types | |
684 // of run (blocking, drag and drop). | |
685 bool async_run_; | |
686 | |
687 // Controls behavior differences between a combobox and other types of menu | 667 // Controls behavior differences between a combobox and other types of menu |
688 // (like a context menu). | 668 // (like a context menu). |
689 bool is_combobox_; | 669 bool is_combobox_; |
690 | 670 |
691 // Set to true if the menu item was selected by touch. | 671 // Set to true if the menu item was selected by touch. |
692 bool item_selected_by_touch_; | 672 bool item_selected_by_touch_; |
693 | 673 |
694 // During mouse event handling, this is the RootView to forward mouse events | 674 // During mouse event handling, this is the RootView to forward mouse events |
695 // to. We need this, because if we forward one event to it (e.g., mouse | 675 // to. We need this, because if we forward one event to it (e.g., mouse |
696 // pressed), subsequent events (like dragging) should also go to it, even if | 676 // pressed), subsequent events (like dragging) should also go to it, even if |
697 // the mouse is no longer over the view. | 677 // the mouse is no longer over the view. |
698 MenuHostRootView* current_mouse_event_target_; | 678 MenuHostRootView* current_mouse_event_target_; |
699 | 679 |
700 // A mask of the EventFlags for the mouse buttons currently pressed. | 680 // A mask of the EventFlags for the mouse buttons currently pressed. |
701 int current_mouse_pressed_state_; | 681 int current_mouse_pressed_state_; |
702 | 682 |
703 std::unique_ptr<MenuMessageLoop> message_loop_; | |
704 | |
705 #if defined(USE_AURA) | 683 #if defined(USE_AURA) |
706 std::unique_ptr<MenuPreTargetHandler> menu_pre_target_handler_; | 684 std::unique_ptr<MenuPreTargetHandler> menu_pre_target_handler_; |
707 #endif | 685 #endif |
708 | 686 |
709 DISALLOW_COPY_AND_ASSIGN(MenuController); | 687 DISALLOW_COPY_AND_ASSIGN(MenuController); |
710 }; | 688 }; |
711 | 689 |
712 } // namespace views | 690 } // namespace views |
713 | 691 |
714 #endif // UI_VIEWS_CONTROLS_MENU_MENU_CONTROLLER_H_ | 692 #endif // UI_VIEWS_CONTROLS_MENU_MENU_CONTROLLER_H_ |
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