ladybird/Libraries/LibWeb/Page/EventHandler.h
Shannon Booth f87041bf3a LibGC+Everywhere: Factor out a LibGC from LibJS
Resulting in a massive rename across almost everywhere! Alongside the
namespace change, we now have the following names:

 * JS::NonnullGCPtr -> GC::Ref
 * JS::GCPtr -> GC::Ptr
 * JS::HeapFunction -> GC::Function
 * JS::CellImpl -> GC::Cell
 * JS::Handle -> GC::Root
2024-11-15 14:49:20 +01:00

85 lines
3.3 KiB
C++

/*
* Copyright (c) 2020, Andreas Kling <andreas@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Forward.h>
#include <AK/NonnullOwnPtr.h>
#include <AK/WeakPtr.h>
#include <LibGC/Ptr.h>
#include <LibGfx/Forward.h>
#include <LibJS/Heap/Cell.h>
#include <LibUnicode/Forward.h>
#include <LibWeb/Forward.h>
#include <LibWeb/Page/EventResult.h>
#include <LibWeb/Page/InputEvent.h>
#include <LibWeb/PixelUnits.h>
#include <LibWeb/UIEvents/KeyCode.h>
namespace Web {
class EventHandler {
public:
explicit EventHandler(Badge<HTML::Navigable>, HTML::Navigable&);
~EventHandler();
EventResult handle_mouseup(CSSPixelPoint, CSSPixelPoint screen_position, unsigned button, unsigned buttons, unsigned modifiers);
EventResult handle_mousedown(CSSPixelPoint, CSSPixelPoint screen_position, unsigned button, unsigned buttons, unsigned modifiers);
EventResult handle_mousemove(CSSPixelPoint, CSSPixelPoint screen_position, unsigned buttons, unsigned modifiers);
EventResult handle_mousewheel(CSSPixelPoint, CSSPixelPoint screen_position, unsigned button, unsigned buttons, unsigned modifiers, int wheel_delta_x, int wheel_delta_y);
EventResult handle_doubleclick(CSSPixelPoint, CSSPixelPoint screen_position, unsigned button, unsigned buttons, unsigned modifiers);
EventResult handle_drag_and_drop_event(DragEvent::Type, CSSPixelPoint, CSSPixelPoint screen_position, unsigned button, unsigned buttons, unsigned modifiers, Vector<HTML::SelectedFile> files);
EventResult handle_keydown(UIEvents::KeyCode, unsigned modifiers, u32 code_point, bool repeat);
EventResult handle_keyup(UIEvents::KeyCode, unsigned modifiers, u32 code_point, bool repeat);
void set_mouse_event_tracking_paintable(Painting::Paintable*);
void handle_paste(String const& text);
void visit_edges(JS::Cell::Visitor& visitor) const;
Unicode::Segmenter& word_segmenter();
private:
bool focus_next_element();
bool focus_previous_element();
EventResult fire_keyboard_event(FlyString const& event_name, HTML::Navigable&, UIEvents::KeyCode, unsigned modifiers, u32 code_point, bool repeat);
[[nodiscard]] EventResult input_event(FlyString const& event_name, FlyString const& input_type, HTML::Navigable&, u32 code_point);
CSSPixelPoint compute_mouse_event_client_offset(CSSPixelPoint event_page_position) const;
CSSPixelPoint compute_mouse_event_page_offset(CSSPixelPoint event_client_offset) const;
CSSPixelPoint compute_mouse_event_movement(CSSPixelPoint event_client_offset) const;
struct Target {
GC::Ptr<Painting::Paintable> paintable;
Optional<int> index_in_node;
};
Optional<Target> target_for_mouse_position(CSSPixelPoint position);
Painting::PaintableBox* paint_root();
Painting::PaintableBox const* paint_root() const;
bool should_ignore_device_input_event() const;
GC::Ref<HTML::Navigable> m_navigable;
bool m_in_mouse_selection { false };
InputEventsTarget* m_mouse_selection_target { nullptr };
GC::Ptr<Painting::Paintable> m_mouse_event_tracking_paintable;
NonnullOwnPtr<DragAndDropEventHandler> m_drag_and_drop_event_handler;
WeakPtr<DOM::EventTarget> m_mousedown_target;
Optional<CSSPixelPoint> m_mousemove_previous_screen_position;
OwnPtr<Unicode::Segmenter> m_word_segmenter;
};
}