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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Function.h>
#include <AK/String.h>
#include <AK/Types.h>
#include <AK/WeakPtr.h>
#include <LibCore/DeferredInvocationContext.h>
#include <LibCore/Forward.h>
namespace Core {
class Event {
public:
enum Type {
Invalid = 0,
Quit,
Timer,
NotifierRead,
NotifierWrite,
DeferredInvoke,
ChildAdded,
ChildRemoved,
Custom,
};
Event() = default;
explicit Event(unsigned type)
: m_type(type)
{
}
virtual ~Event() = default;
unsigned type() const { return m_type; }
bool is_accepted() const { return m_accepted; }
void accept() { m_accepted = true; }
void ignore() { m_accepted = false; }
private:
unsigned m_type { Type::Invalid };
bool m_accepted { true };
};
class DeferredInvocationEvent : public Event {
friend class EventLoop;
public:
DeferredInvocationEvent(NonnullRefPtr<DeferredInvocationContext> context, Function<void()> invokee)
: Event(Event::Type::DeferredInvoke)
, m_context(move(context))
, m_invokee(move(invokee))
{
}
private:
NonnullRefPtr<DeferredInvocationContext> m_context;
Function<void()> m_invokee;
};
class TimerEvent final : public Event {
public:
explicit TimerEvent(int timer_id)
: Event(Event::Timer)
, m_timer_id(timer_id)
{
}
~TimerEvent() = default;
int timer_id() const { return m_timer_id; }
private:
int m_timer_id;
};
class NotifierReadEvent final : public Event {
public:
explicit NotifierReadEvent(int fd)
: Event(Event::NotifierRead)
, m_fd(fd)
{
}
~NotifierReadEvent() = default;
int fd() const { return m_fd; }
private:
int m_fd;
};
class NotifierWriteEvent final : public Event {
public:
explicit NotifierWriteEvent(int fd)
: Event(Event::NotifierWrite)
, m_fd(fd)
{
}
~NotifierWriteEvent() = default;
int fd() const { return m_fd; }
private:
int m_fd;
};
class ChildEvent final : public Event {
public:
ChildEvent(Type, Object& child, Object* insertion_before_child = nullptr);
~ChildEvent() = default;
Object* child();
Object const* child() const;
Object* insertion_before_child();
Object const* insertion_before_child() const;
private:
WeakPtr<Object> m_child;
WeakPtr<Object> m_insertion_before_child;
};
class CustomEvent : public Event {
public:
CustomEvent(int custom_type)
: Event(Event::Type::Custom)
, m_custom_type(custom_type)
{
}
~CustomEvent() = default;
int custom_type() const { return m_custom_type; }
private:
int m_custom_type { 0 };
};
}
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