| // 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_BUBBLE_TRAY_BUBBLE_VIEW_H_ |
| #define UI_VIEWS_BUBBLE_TRAY_BUBBLE_VIEW_H_ |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "base/optional.h" |
| #include "ui/accessibility/ax_enums.mojom.h" |
| #include "ui/events/event.h" |
| #include "ui/gfx/native_widget_types.h" |
| #include "ui/views/bubble/bubble_dialog_delegate_view.h" |
| #include "ui/views/mouse_watcher.h" |
| #include "ui/views/views_export.h" |
| |
| namespace ui { |
| class LayerOwner; |
| } |
| |
| namespace views { |
| class BoxLayout; |
| class View; |
| class Widget; |
| } |
| |
| namespace views { |
| |
| // Specialized bubble view for bubbles associated with a tray icon (e.g. the |
| // Ash status area). Mostly this handles custom anchor location and arrow and |
| // border rendering. This also has its own delegate for handling mouse events |
| // and other implementation specific details. |
| class VIEWS_EXPORT TrayBubbleView : public BubbleDialogDelegateView, |
| public MouseWatcherListener { |
| public: |
| // AnchorAlignment determines to which side of the anchor the bubble will |
| // align itself. |
| enum AnchorAlignment { |
| ANCHOR_ALIGNMENT_BOTTOM, |
| ANCHOR_ALIGNMENT_LEFT, |
| ANCHOR_ALIGNMENT_RIGHT, |
| }; |
| |
| class VIEWS_EXPORT Delegate { |
| public: |
| typedef TrayBubbleView::AnchorAlignment AnchorAlignment; |
| |
| Delegate() {} |
| virtual ~Delegate(); |
| |
| // Called when the view is destroyed. Any pointers to the view should be |
| // cleared when this gets called. |
| virtual void BubbleViewDestroyed(); |
| |
| // Called when the mouse enters/exits the view. |
| // Note: This event will only be called if the mouse gets actively moved by |
| // the user to enter the view. |
| virtual void OnMouseEnteredView(); |
| virtual void OnMouseExitedView(); |
| |
| // Called from GetAccessibleNodeData(); should return the appropriate |
| // accessible name for the bubble. |
| virtual base::string16 GetAccessibleNameForBubble(); |
| |
| // Should return true if extra keyboard accessibility is enabled. |
| // TrayBubbleView will put focus on the default item if extra keyboard |
| // accessibility is enabled. |
| virtual bool ShouldEnableExtraKeyboardAccessibility(); |
| |
| // Called when a bubble wants to hide/destroy itself (e.g. last visible |
| // child view was closed). |
| virtual void HideBubble(const TrayBubbleView* bubble_view); |
| |
| // Called to process the gesture events that happened on the TrayBubbleView. |
| // Swiping down on the opened TrayBubbleView to close the bubble. |
| virtual void ProcessGestureEventForBubble(ui::GestureEvent* event); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(Delegate); |
| }; |
| |
| struct VIEWS_EXPORT InitParams { |
| InitParams(); |
| InitParams(const InitParams& other); |
| Delegate* delegate = nullptr; |
| gfx::NativeWindow parent_window = nullptr; |
| View* anchor_view = nullptr; |
| AnchorAlignment anchor_alignment = ANCHOR_ALIGNMENT_BOTTOM; |
| int min_width = 0; |
| int max_width = 0; |
| int max_height = 0; |
| bool close_on_deactivate = true; |
| // Indicates whether tray bubble view is shown by click on the tray view. |
| bool show_by_click = false; |
| // If not provided, the bg color will be derived from the NativeTheme. |
| base::Optional<SkColor> bg_color; |
| base::Optional<int> corner_radius; |
| bool has_shadow = true; |
| }; |
| |
| explicit TrayBubbleView(const InitParams& init_params); |
| ~TrayBubbleView() override; |
| |
| // Returns whether a tray bubble is active. |
| static bool IsATrayBubbleOpen(); |
| |
| // Sets up animations, and show the bubble. Must occur after CreateBubble() |
| // is called. |
| void InitializeAndShowBubble(); |
| |
| // Called whenever the bubble size or location may have changed. |
| void UpdateBubble(); |
| |
| // Sets the maximum bubble height and resizes the bubble. |
| void SetMaxHeight(int height); |
| |
| // Sets the bottom padding that child views will be laid out within. |
| void SetBottomPadding(int padding); |
| |
| // Sets the bubble width. |
| void SetWidth(int width); |
| |
| // Returns the border insets. Called by TrayEventFilter. |
| gfx::Insets GetBorderInsets() const; |
| |
| // Called when the delegate is destroyed. This must be called before the |
| // delegate is actually destroyed. TrayBubbleView will do clean up in |
| // ResetDelegate. |
| void ResetDelegate(); |
| |
| // Anchors the bubble to |anchor_view|. |
| void ChangeAnchorView(views::View* anchor_view); |
| |
| Delegate* delegate() { return delegate_; } |
| |
| void set_gesture_dragging(bool dragging) { is_gesture_dragging_ = dragging; } |
| bool is_gesture_dragging() const { return is_gesture_dragging_; } |
| |
| // Overridden from views::WidgetDelegate. |
| views::NonClientFrameView* CreateNonClientFrameView( |
| views::Widget* widget) override; |
| bool WidgetHasHitTestMask() const override; |
| void GetWidgetHitTestMask(gfx::Path* mask) const override; |
| base::string16 GetAccessibleWindowTitle() const override; |
| |
| // Overridden from views::BubbleDialogDelegateView. |
| void OnBeforeBubbleWidgetInit(Widget::InitParams* params, |
| Widget* bubble_widget) const override; |
| void OnWidgetClosing(Widget* widget) override; |
| void OnWidgetActivationChanged(Widget* widget, bool active) override; |
| |
| // Overridden from views::View. |
| gfx::Size CalculatePreferredSize() const override; |
| int GetHeightForWidth(int width) const override; |
| void OnMouseEntered(const ui::MouseEvent& event) override; |
| void OnMouseExited(const ui::MouseEvent& event) override; |
| void GetAccessibleNodeData(ui::AXNodeData* node_data) override; |
| void OnGestureEvent(ui::GestureEvent* event) override; |
| |
| // Overridden from MouseWatcherListener |
| void MouseMovedOutOfHost() override; |
| |
| protected: |
| // Overridden from views::BubbleDialogDelegateView. |
| int GetDialogButtons() const override; |
| ax::mojom::Role GetAccessibleWindowRole() const override; |
| void SizeToContents() override; |
| |
| // Overridden from views::View. |
| void ChildPreferredSizeChanged(View* child) override; |
| void ViewHierarchyChanged( |
| const ViewHierarchyChangedDetails& details) override; |
| |
| private: |
| // This reroutes receiving key events to the TrayBubbleView passed in the |
| // constructor. TrayBubbleView is not activated by default. But we want to |
| // activate it if user tries to interact it with keyboard. To capture those |
| // key events in early stage, RerouteEventHandler installs this handler to |
| // aura::Env. RerouteEventHandler also sends key events to ViewsDelegate to |
| // process accelerator as menu is currently open. |
| class RerouteEventHandler : public ui::EventHandler { |
| public: |
| explicit RerouteEventHandler(TrayBubbleView* tray_bubble_view); |
| ~RerouteEventHandler() override; |
| |
| // Overridden from ui::EventHandler |
| void OnKeyEvent(ui::KeyEvent* event) override; |
| |
| private: |
| // TrayBubbleView to which key events are going to be rerouted. Not owned. |
| TrayBubbleView* tray_bubble_view_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RerouteEventHandler); |
| }; |
| |
| void CloseBubbleView(); |
| |
| // Focus the default item if no item is focused. |
| void FocusDefaultIfNeeded(); |
| |
| InitParams params_; |
| BoxLayout* layout_; |
| Delegate* delegate_; |
| int preferred_width_; |
| // |bubble_border_| and |owned_bubble_border_| point to the same thing, but |
| // the latter ensures we don't leak it before passing off ownership. |
| BubbleBorder* bubble_border_; |
| std::unique_ptr<views::BubbleBorder> owned_bubble_border_; |
| std::unique_ptr<ui::LayerOwner> bubble_content_mask_; |
| bool is_gesture_dragging_; |
| |
| // True once the mouse cursor was actively moved by the user over the bubble. |
| // Only then the OnMouseExitedView() event will get passed on to listeners. |
| bool mouse_actively_entered_; |
| |
| // Used to find any mouse movements. |
| std::unique_ptr<MouseWatcher> mouse_watcher_; |
| |
| // Used to activate tray bubble view if user tries to interact the tray with |
| // keyboard. |
| std::unique_ptr<EventHandler> reroute_event_handler_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TrayBubbleView); |
| }; |
| |
| } // namespace views |
| |
| #endif // UI_VIEWS_BUBBLE_TRAY_BUBBLE_VIEW_H_ |