Userland: Rename Core::Object to Core::EventReceiver

This is a more precise description of what this class actually does.

Userland/Applications/Escalator/EscalatorWindow.h

@@ -11,7 +11,7 @@
 #include <AK/StringView.h>
 #include <AK/Vector.h>
 #include <LibCore/Account.h>
-#include <LibCore/Object.h>
+#include <LibCore/EventReceiver.h>
 #include <LibGUI/Button.h>
 #include <LibGUI/ImageWidget.h>
 #include <LibGUI/TextBox.h>

Userland/Applications/Piano/AudioPlayerLoop.h

@@ -13,7 +13,7 @@
 #include <LibAudio/Sample.h>
 #include <LibAudio/WavWriter.h>
 #include <LibCore/Event.h>
-#include <LibCore/Object.h>
+#include <LibCore/EventReceiver.h>
 #include <LibDSP/Music.h>
 #include <LibThreading/MutexProtected.h>
 #include <LibThreading/Thread.h>
@@ -22,7 +22,7 @@ class TrackManager;
 
 // Wrapper class accepting custom events to advance the track playing and forward audio data to the system.
 // This does not run on a separate thread, preventing IPC multithreading madness.
-class AudioPlayerLoop final : public Core::Object {
+class AudioPlayerLoop final : public Core::EventReceiver {
     C_OBJECT(AudioPlayerLoop)
 public:
     virtual ~AudioPlayerLoop() override;

Userland/Applications/Piano/ProcessorParameterWidget/ParameterWidget.h

@@ -7,7 +7,7 @@
 #pragma once
 
 #include <AK/NonnullRefPtr.h>
-#include <LibCore/Object.h>
+#include <LibCore/EventReceiver.h>
 #include <LibDSP/ProcessorParameter.h>
 #include <LibGUI/Label.h>
 #include <LibGUI/Widget.h>

Userland/Applications/Piano/ProcessorParameterWidget/Toggle.h

@@ -6,7 +6,7 @@
 
 #pragma once
 
-#include <LibCore/Object.h>
+#include <LibCore/EventReceiver.h>
 #include <LibDSP/ProcessorParameter.h>
 #include <LibGUI/CheckBox.h>
 #include <LibGUI/Widget.h>

Userland/Applications/PixelPaint/ScopeWidget.h

@@ -7,7 +7,7 @@
 #pragma once
 
 #include "Image.h"
-#include <LibCore/Object.h>
+#include <LibCore/EventReceiver.h>
 #include <LibGUI/Frame.h>
 
 namespace PixelPaint {

Userland/Applications/SoundPlayer/SoundPlayerWidget.h

@@ -33,7 +33,7 @@ public:
         m_visualization->remove_from_parent();
         update();
         auto new_visualization = T::construct(move(args)...);
-        m_player_view->insert_child_before(new_visualization, *static_cast<Core::Object*>(m_playback_progress_slider.ptr()));
+        m_player_view->insert_child_before(new_visualization, *static_cast<Core::EventReceiver*>(m_playback_progress_slider.ptr()));
         m_visualization = new_visualization;
         if (!loaded_filename().is_empty())
             m_visualization->start_new_file(loaded_filename());

Userland/Applications/Spreadsheet/Spreadsheet.h

@@ -17,7 +17,7 @@
 #include <AK/Types.h>
 #include <AK/WeakPtr.h>
 #include <AK/Weakable.h>
-#include <LibCore/Object.h>
+#include <LibCore/EventReceiver.h>
 #include <LibJS/Interpreter.h>
 
 namespace Spreadsheet {
@@ -41,7 +41,7 @@ private:
     CellTypeMetadata m_new_type_metadata;
 };
 
-class Sheet : public Core::Object {
+class Sheet : public Core::EventReceiver {
     C_OBJECT(Sheet);
 
 public:

Userland/Applications/SystemMonitor/GraphWidget.cpp

@@ -6,7 +6,7 @@
  */
 
 #include "GraphWidget.h"
-#include <LibCore/Object.h>
+#include <LibCore/EventReceiver.h>
 #include <LibGUI/Application.h>
 #include <LibGUI/Painter.h>
 #include <LibGfx/Font/Font.h>

Userland/Applications/SystemMonitor/MemoryStatsWidget.cpp

@@ -9,7 +9,7 @@
 #include "GraphWidget.h"
 #include <AK/JsonObject.h>
 #include <AK/NumberFormat.h>
-#include <LibCore/Object.h>
+#include <LibCore/EventReceiver.h>
 #include <LibGUI/BoxLayout.h>
 #include <LibGUI/Label.h>
 #include <LibGUI/Painter.h>

Userland/Applications/SystemMonitor/ThreadStackWidget.cpp

@@ -126,7 +126,7 @@ void ThreadStackWidget::refresh()
         [weak_this = make_weak_ptr()](auto result) -> ErrorOr<void> {
             if (!weak_this)
                 return {};
-            Core::EventLoop::current().post_event(const_cast<Core::Object&>(*weak_this), make<CompletionEvent>(move(result)));
+            Core::EventLoop::current().post_event(const_cast<Core::EventReceiver&>(*weak_this), make<CompletionEvent>(move(result)));
             return {};
         });
 }

Userland/Applications/SystemMonitor/main.cpp

@@ -21,7 +21,7 @@
 #include <LibConfig/Client.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/EventLoop.h>
-#include <LibCore/Object.h>
+#include <LibCore/EventReceiver.h>
 #include <LibCore/System.h>
 #include <LibCore/Timer.h>
 #include <LibGUI/Action.h>