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LibGUI: Make focus events more aware of why focus is changing

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This patch adds GUI::FocusEvent which has a GUI::FocusSource.
The focus source is one of three things:

- Programmatic
- Mouse
- Keyboard

This allows receivers of focus events to implement different behaviors
depending on how they receive/lose focus.
This commit is contained in:
Andreas Kling 2020-08-14 19:56:40 +02:00
parent 110b3d89d3
commit 75b8f4e4e6
14 changed files with 94 additions and 41 deletions
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10
Libraries/LibGUI/Widget.h
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@ -147,7 +147,7 @@ public:
virtual bool accepts_focus() const { return false; }
bool is_focused() const;
void set_focus(bool);
void set_focus(bool, FocusSource = FocusSource::Programmatic);
enum class ShouldRespectGreediness { No = 0,
Yes };
@ -287,8 +287,8 @@ protected:
virtual void mousewheel_event(MouseEvent&);
virtual void doubleclick_event(MouseEvent&);
virtual void context_menu_event(ContextMenuEvent&);
virtual void focusin_event(Core::Event&);
virtual void focusout_event(Core::Event&);
virtual void focusin_event(FocusEvent&);
virtual void focusout_event(FocusEvent&);
virtual void enter_event(Core::Event&);
virtual void leave_event(Core::Event&);
virtual void child_event(Core::ChildEvent&) override;
@ -310,8 +310,8 @@ private:
void handle_mouseup_event(MouseEvent&);
void handle_enter_event(Core::Event&);
void handle_leave_event(Core::Event&);
void focus_previous_widget();
void focus_next_widget();
void focus_previous_widget(FocusSource);
void focus_next_widget(FocusSource);
Window* m_window { nullptr };
RefPtr<Layout> m_layout;