LibCore: Remove unused ChildEvent

Author: https://github.com/awesomekling
Commit: 0037df88d5
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5817
Reviewed-by: https://github.com/gmta ✅

Libraries/LibCore/CMakeLists.txt

@@ -42,7 +42,6 @@ set(SOURCES
     ConfigFile.cpp
     DateTime.cpp
     ElapsedTimer.cpp
-    Event.cpp
     EventLoop.cpp
     EventLoopImplementation.cpp
     EventReceiver.cpp

Libraries/LibCore/Event.cpp

@@ -1,49 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
- * Copyright (c) 2022, the SerenityOS developers.
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#include <AK/WeakPtr.h>
-#include <LibCore/Event.h>
-#include <LibCore/EventReceiver.h>
-
-namespace Core {
-
-ChildEvent::ChildEvent(Type type, EventReceiver& child, EventReceiver* insertion_before_child)
-    : Core::Event(type)
-    , m_child(child.make_weak_ptr())
-    , m_insertion_before_child(AK::make_weak_ptr_if_nonnull(insertion_before_child))
-{
-}
-
-EventReceiver* ChildEvent::child()
-{
-    if (auto ref = m_child.strong_ref())
-        return ref.ptr();
-    return nullptr;
-}
-
-EventReceiver const* ChildEvent::child() const
-{
-    if (auto ref = m_child.strong_ref())
-        return ref.ptr();
-    return nullptr;
-}
-
-EventReceiver* ChildEvent::insertion_before_child()
-{
-    if (auto ref = m_insertion_before_child.strong_ref())
-        return ref.ptr();
-    return nullptr;
-}
-
-EventReceiver const* ChildEvent::insertion_before_child() const
-{
-    if (auto ref = m_insertion_before_child.strong_ref())
-        return ref.ptr();
-    return nullptr;
-}
-
-}

Libraries/LibCore/Event.h

@@ -24,8 +24,6 @@ public:
         Timer,
         NotifierActivation,
         DeferredInvoke,
-        ChildAdded,
-        ChildRemoved,
         Custom,
     };
 
@@ -102,22 +100,6 @@ private:
     NotificationType m_type;
 };
 
-class ChildEvent final : public Event {
-public:
-    ChildEvent(Type, EventReceiver& child, EventReceiver* insertion_before_child = nullptr);
-    ~ChildEvent() = default;
-
-    EventReceiver* child();
-    EventReceiver const* child() const;
-
-    EventReceiver* insertion_before_child();
-    EventReceiver const* insertion_before_child() const;
-
-private:
-    WeakPtr<EventReceiver> m_child;
-    WeakPtr<EventReceiver> m_insertion_before_child;
-};
-
 class CustomEvent : public Event {
 public:
     CustomEvent(int custom_type)

Libraries/LibCore/EventReceiver.cpp

@@ -28,9 +28,6 @@ void EventReceiver::event(Core::Event& event)
         if (!m_timer_id)
             break; // Too late, the timer was already stopped.
         return timer_event(static_cast<TimerEvent&>(event));
-    case Core::Event::ChildAdded:
-    case Core::Event::ChildRemoved:
-        return child_event(static_cast<ChildEvent&>(event));
     case Core::Event::Invalid:
         VERIFY_NOT_REACHED();
         break;
@@ -45,10 +42,6 @@ void EventReceiver::timer_event(Core::TimerEvent&)
 {
 }
 
-void EventReceiver::child_event(Core::ChildEvent&)
-{
-}
-
 void EventReceiver::custom_event(CustomEvent&)
 {
 }

Libraries/LibCore/EventReceiver.h

@@ -82,9 +82,6 @@ protected:
     virtual void timer_event(TimerEvent&);
     virtual void custom_event(CustomEvent&);
 
-    // NOTE: You may get child events for children that are not yet fully constructed!
-    virtual void child_event(ChildEvent&);
-
 private:
     intptr_t m_timer_id { 0 };
 };

Libraries/LibCore/Forward.h

@@ -13,7 +13,6 @@ namespace Core {
 class AnonymousBuffer;
 class ArgsParser;
 class BufferedSocketBase;
-class ChildEvent;
 class ConfigFile;
 class CustomEvent;
 class DateTime;