Cleanup EditorPluginList

- Removes unused / unnecessary methods.
- Removes the `Object` parent. No `Object` features are used by this class.
- Makes the actual list a `LocalVector` instead of a `Vector`. It's not shared.
- Moves the class into a separate file. `editor_node.{h,cpp}` are bloated.
- Simplify some call sites of `EditorPluginList` methods.

editor/editor_node.cpp

@@ -47,6 +47,7 @@
 #include "core/version.h"
 #include "editor/editor_string_names.h"
 #include "editor/inspector/editor_context_menu_plugin.h"
+#include "editor/plugins/editor_plugin_list.h"
 #include "main/main.h"
 #include "scene/2d/node_2d.h"
 #include "scene/3d/bone_attachment_3d.h"
@@ -8899,92 +8900,3 @@ EditorNode::~EditorNode() {
 
 	singleton = nullptr;
 }
-
-/*
- * EDITOR PLUGIN LIST
- */
-
-void EditorPluginList::make_visible(bool p_visible) {
-	for (int i = 0; i < plugins_list.size(); i++) {
-		plugins_list[i]->make_visible(p_visible);
-	}
-}
-
-void EditorPluginList::edit(Object *p_object) {
-	for (int i = 0; i < plugins_list.size(); i++) {
-		plugins_list[i]->edit(p_object);
-	}
-}
-
-bool EditorPluginList::forward_gui_input(const Ref<InputEvent> &p_event) {
-	bool discard = false;
-
-	for (int i = 0; i < plugins_list.size(); i++) {
-		if (plugins_list[i]->forward_canvas_gui_input(p_event)) {
-			discard = true;
-		}
-	}
-
-	return discard;
-}
-
-EditorPlugin::AfterGUIInput EditorPluginList::forward_3d_gui_input(Camera3D *p_camera, const Ref<InputEvent> &p_event, bool serve_when_force_input_enabled) {
-	EditorPlugin::AfterGUIInput after = EditorPlugin::AFTER_GUI_INPUT_PASS;
-
-	for (int i = 0; i < plugins_list.size(); i++) {
-		if ((!serve_when_force_input_enabled) && plugins_list[i]->is_input_event_forwarding_always_enabled()) {
-			continue;
-		}
-
-		EditorPlugin::AfterGUIInput current_after = plugins_list[i]->forward_3d_gui_input(p_camera, p_event);
-		if (current_after == EditorPlugin::AFTER_GUI_INPUT_STOP) {
-			after = EditorPlugin::AFTER_GUI_INPUT_STOP;
-		}
-		if (after != EditorPlugin::AFTER_GUI_INPUT_STOP && current_after == EditorPlugin::AFTER_GUI_INPUT_CUSTOM) {
-			after = EditorPlugin::AFTER_GUI_INPUT_CUSTOM;
-		}
-	}
-
-	return after;
-}
-
-void EditorPluginList::forward_canvas_draw_over_viewport(Control *p_overlay) {
-	for (int i = 0; i < plugins_list.size(); i++) {
-		plugins_list[i]->forward_canvas_draw_over_viewport(p_overlay);
-	}
-}
-
-void EditorPluginList::forward_canvas_force_draw_over_viewport(Control *p_overlay) {
-	for (int i = 0; i < plugins_list.size(); i++) {
-		plugins_list[i]->forward_canvas_force_draw_over_viewport(p_overlay);
-	}
-}
-
-void EditorPluginList::forward_3d_draw_over_viewport(Control *p_overlay) {
-	for (int i = 0; i < plugins_list.size(); i++) {
-		plugins_list[i]->forward_3d_draw_over_viewport(p_overlay);
-	}
-}
-
-void EditorPluginList::forward_3d_force_draw_over_viewport(Control *p_overlay) {
-	for (int i = 0; i < plugins_list.size(); i++) {
-		plugins_list[i]->forward_3d_force_draw_over_viewport(p_overlay);
-	}
-}
-
-void EditorPluginList::add_plugin(EditorPlugin *p_plugin) {
-	ERR_FAIL_COND(plugins_list.has(p_plugin));
-	plugins_list.push_back(p_plugin);
-}
-
-void EditorPluginList::remove_plugin(EditorPlugin *p_plugin) {
-	plugins_list.erase(p_plugin);
-}
-
-bool EditorPluginList::is_empty() {
-	return plugins_list.is_empty();
-}
-
-void EditorPluginList::clear() {
-	plugins_list.clear();
-}

editor/editor_node.h

@@ -1013,35 +1013,6 @@ public:
 	void run_editor_script(const Ref<Script> &p_script);
 };
 
-class EditorPluginList : public Object {
-	GDSOFTCLASS(EditorPluginList, Object);
-
-private:
-	Vector<EditorPlugin *> plugins_list;
-
-public:
-	void set_plugins_list(Vector<EditorPlugin *> p_plugins_list) {
-		plugins_list = p_plugins_list;
-	}
-
-	Vector<EditorPlugin *> &get_plugins_list() {
-		return plugins_list;
-	}
-
-	void make_visible(bool p_visible);
-	void edit(Object *p_object);
-	bool forward_gui_input(const Ref<InputEvent> &p_event);
-	void forward_canvas_draw_over_viewport(Control *p_overlay);
-	void forward_canvas_force_draw_over_viewport(Control *p_overlay);
-	EditorPlugin::AfterGUIInput forward_3d_gui_input(Camera3D *p_camera, const Ref<InputEvent> &p_event, bool serve_when_force_input_enabled);
-	void forward_3d_draw_over_viewport(Control *p_overlay);
-	void forward_3d_force_draw_over_viewport(Control *p_overlay);
-	void add_plugin(EditorPlugin *p_plugin);
-	void remove_plugin(EditorPlugin *p_plugin);
-	void clear();
-	bool is_empty();
-};
-
 struct EditorProgressBG {
 	String task;
 	void step(int p_step = -1) { EditorNode::progress_task_step_bg(task, p_step); }

editor/plugins/editor_plugin.cpp

@@ -47,6 +47,7 @@
 #include "editor/import/3d/resource_importer_scene.h"
 #include "editor/import/editor_import_plugin.h"
 #include "editor/inspector/editor_inspector.h"
+#include "editor/plugins/editor_plugin_list.h"
 #include "editor/plugins/editor_resource_conversion_plugin.h"
 #include "editor/scene/3d/node_3d_editor_plugin.h"
 #include "editor/scene/canvas_item_editor_plugin.h"
@@ -223,14 +224,12 @@ PopupMenu *EditorPlugin::get_export_as_menu() {
 
 void EditorPlugin::set_input_event_forwarding_always_enabled() {
 	input_event_forwarding_always_enabled = true;
-	EditorPluginList *always_input_forwarding_list = EditorNode::get_singleton()->get_editor_plugins_force_input_forwarding();
+	EditorNode::get_singleton()->get_editor_plugins_force_input_forwarding()->add_plugin(this);
-	always_input_forwarding_list->add_plugin(this);
 }
 
 void EditorPlugin::set_force_draw_over_forwarding_enabled() {
 	force_draw_over_forwarding_enabled = true;
-	EditorPluginList *always_draw_over_forwarding_list = EditorNode::get_singleton()->get_editor_plugins_force_over();
+	EditorNode::get_singleton()->get_editor_plugins_force_over()->add_plugin(this);
-	always_draw_over_forwarding_list->add_plugin(this);
 }
 
 void EditorPlugin::notify_scene_changed(const Node *scn_root) {

editor/plugins/editor_plugin_list.cpp

@@ -0,0 +1,96 @@
+/**************************************************************************/
+/*  editor_plugin_list.cpp                                                */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "editor_plugin_list.h"
+
+bool EditorPluginList::forward_gui_input(const Ref<InputEvent> &p_event) const {
+	bool discard = false;
+
+	for (EditorPlugin *plugin : plugins_list) {
+		if (plugin->forward_canvas_gui_input(p_event)) {
+			discard = true;
+		}
+	}
+
+	return discard;
+}
+
+EditorPlugin::AfterGUIInput EditorPluginList::forward_3d_gui_input(Camera3D *p_camera, const Ref<InputEvent> &p_event, bool p_serve_when_force_input_enabled) const {
+	EditorPlugin::AfterGUIInput after = EditorPlugin::AFTER_GUI_INPUT_PASS;
+
+	for (EditorPlugin *plugin : plugins_list) {
+		if (!p_serve_when_force_input_enabled && plugin->is_input_event_forwarding_always_enabled()) {
+			continue;
+		}
+
+		EditorPlugin::AfterGUIInput current_after = plugin->forward_3d_gui_input(p_camera, p_event);
+		if (current_after == EditorPlugin::AFTER_GUI_INPUT_STOP) {
+			after = EditorPlugin::AFTER_GUI_INPUT_STOP;
+		}
+		if (after != EditorPlugin::AFTER_GUI_INPUT_STOP && current_after == EditorPlugin::AFTER_GUI_INPUT_CUSTOM) {
+			after = EditorPlugin::AFTER_GUI_INPUT_CUSTOM;
+		}
+	}
+
+	return after;
+}
+
+void EditorPluginList::forward_canvas_draw_over_viewport(Control *p_overlay) const {
+	for (EditorPlugin *plugin : plugins_list) {
+		plugin->forward_canvas_draw_over_viewport(p_overlay);
+	}
+}
+
+void EditorPluginList::forward_canvas_force_draw_over_viewport(Control *p_overlay) const {
+	for (EditorPlugin *plugin : plugins_list) {
+		plugin->forward_canvas_force_draw_over_viewport(p_overlay);
+	}
+}
+
+void EditorPluginList::forward_3d_draw_over_viewport(Control *p_overlay) const {
+	for (EditorPlugin *plugin : plugins_list) {
+		plugin->forward_3d_draw_over_viewport(p_overlay);
+	}
+}
+
+void EditorPluginList::forward_3d_force_draw_over_viewport(Control *p_overlay) const {
+	for (EditorPlugin *plugin : plugins_list) {
+		plugin->forward_3d_force_draw_over_viewport(p_overlay);
+	}
+}
+
+void EditorPluginList::add_plugin(EditorPlugin *p_plugin) {
+	ERR_FAIL_COND(plugins_list.has(p_plugin));
+	plugins_list.push_back(p_plugin);
+}
+
+void EditorPluginList::remove_plugin(EditorPlugin *p_plugin) {
+	plugins_list.erase(p_plugin);
+}

editor/plugins/editor_plugin_list.h

@@ -0,0 +1,51 @@
+/**************************************************************************/
+/*  editor_plugin_list.h                                                  */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "editor/plugins/editor_plugin.h"
+
+class Control;
+class InputEvent;
+
+class EditorPluginList {
+	LocalVector<EditorPlugin *> plugins_list;
+
+public:
+	bool forward_gui_input(const Ref<InputEvent> &p_event) const;
+	void forward_canvas_draw_over_viewport(Control *p_overlay) const;
+	void forward_canvas_force_draw_over_viewport(Control *p_overlay) const;
+	EditorPlugin::AfterGUIInput forward_3d_gui_input(Camera3D *p_camera, const Ref<InputEvent> &p_event, bool p_serve_when_force_input_enabled) const;
+	void forward_3d_draw_over_viewport(Control *p_overlay) const;
+	void forward_3d_force_draw_over_viewport(Control *p_overlay) const;
+
+	void add_plugin(EditorPlugin *p_plugin);
+	void remove_plugin(EditorPlugin *p_plugin);
+};

editor/scene/3d/node_3d_editor_plugin.cpp

@@ -44,6 +44,7 @@
 #include "editor/editor_string_names.h"
 #include "editor/editor_undo_redo_manager.h"
 #include "editor/gui/editor_spin_slider.h"
+#include "editor/plugins/editor_plugin_list.h"
 #include "editor/run/editor_run_bar.h"
 #include "editor/scene/3d/gizmos/audio_listener_3d_gizmo_plugin.h"
 #include "editor/scene/3d/gizmos/audio_stream_player_3d_gizmo_plugin.h"
@@ -1726,28 +1727,33 @@ void Node3DEditorViewport::_sinput(const Ref<InputEvent> &p_event) {
 	EditorPlugin::AfterGUIInput after = EditorPlugin::AFTER_GUI_INPUT_PASS;
 	{
 		EditorNode *en = EditorNode::get_singleton();
-		EditorPluginList *force_input_forwarding_list = en->get_editor_plugins_force_input_forwarding();
+
-		if (!force_input_forwarding_list->is_empty()) {
+		switch (en->get_editor_plugins_force_input_forwarding()->forward_3d_gui_input(camera, p_event, true)) {
-			EditorPlugin::AfterGUIInput discard = force_input_forwarding_list->forward_3d_gui_input(camera, p_event, true);
+			case EditorPlugin::AFTER_GUI_INPUT_PASS: {
-			if (discard == EditorPlugin::AFTER_GUI_INPUT_STOP) {
+				// Continue processing.
-				return;
+			} break;
-			}
+
-			if (discard == EditorPlugin::AFTER_GUI_INPUT_CUSTOM) {
+			case EditorPlugin::AFTER_GUI_INPUT_STOP: {
+				return; // Stop processing.
+			} break;
+
+			case EditorPlugin::AFTER_GUI_INPUT_CUSTOM: {
 				after = EditorPlugin::AFTER_GUI_INPUT_CUSTOM;
-			}
+			} break;
 		}
-	}
+
-	{
+		switch (en->get_editor_plugins_over()->forward_3d_gui_input(camera, p_event, false)) {
-		EditorNode *en = EditorNode::get_singleton();
+			case EditorPlugin::AFTER_GUI_INPUT_PASS: {
-		EditorPluginList *over_plugin_list = en->get_editor_plugins_over();
+				// Continue processing.
-		if (!over_plugin_list->is_empty()) {
+			} break;
-			EditorPlugin::AfterGUIInput discard = over_plugin_list->forward_3d_gui_input(camera, p_event, false);
+
-			if (discard == EditorPlugin::AFTER_GUI_INPUT_STOP) {
+			case EditorPlugin::AFTER_GUI_INPUT_STOP: {
-				return;
+				return; // Stop processing.
-			}
+			} break;
-			if (discard == EditorPlugin::AFTER_GUI_INPUT_CUSTOM) {
+
+			case EditorPlugin::AFTER_GUI_INPUT_CUSTOM: {
 				after = EditorPlugin::AFTER_GUI_INPUT_CUSTOM;
-			}
+			} break;
 		}
 	}
 
@@ -3494,15 +3500,8 @@ static void draw_indicator_bar(Control &p_surface, real_t p_fill, const Ref<Text
 }
 
 void Node3DEditorViewport::_draw() {
-	EditorPluginList *over_plugin_list = EditorNode::get_singleton()->get_editor_plugins_over();
+	EditorNode::get_singleton()->get_editor_plugins_over()->forward_3d_draw_over_viewport(surface);
-	if (!over_plugin_list->is_empty()) {
+	EditorNode::get_singleton()->get_editor_plugins_force_over()->forward_3d_force_draw_over_viewport(surface);
-		over_plugin_list->forward_3d_draw_over_viewport(surface);
-	}
-
-	EditorPluginList *force_over_plugin_list = EditorNode::get_singleton()->get_editor_plugins_force_over();
-	if (!force_over_plugin_list->is_empty()) {
-		force_over_plugin_list->forward_3d_force_draw_over_viewport(surface);
-	}
 
 	if (surface->has_focus() || rotation_control->has_focus()) {
 		Size2 size = surface->get_size();

editor/scene/canvas_item_editor_plugin.cpp

@@ -43,6 +43,7 @@
 #include "editor/gui/editor_toaster.h"
 #include "editor/gui/editor_zoom_widget.h"
 #include "editor/inspector/editor_context_menu_plugin.h"
+#include "editor/plugins/editor_plugin_list.h"
 #include "editor/run/editor_run_bar.h"
 #include "editor/script/script_editor_plugin.h"
 #include "editor/settings/editor_settings.h"
@@ -4073,14 +4074,8 @@ void CanvasItemEditor::_draw_viewport() {
 	RID ci = viewport->get_canvas_item();
 	RenderingServer::get_singleton()->canvas_item_add_set_transform(ci, Transform2D());
 
-	EditorPluginList *over_plugin_list = EditorNode::get_singleton()->get_editor_plugins_over();
+	EditorNode::get_singleton()->get_editor_plugins_over()->forward_canvas_draw_over_viewport(viewport);
-	if (!over_plugin_list->is_empty()) {
+	EditorNode::get_singleton()->get_editor_plugins_force_over()->forward_canvas_force_draw_over_viewport(viewport);
-		over_plugin_list->forward_canvas_draw_over_viewport(viewport);
-	}
-	EditorPluginList *force_over_plugin_list = EditorNode::get_singleton()->get_editor_plugins_force_over();
-	if (!force_over_plugin_list->is_empty()) {
-		force_over_plugin_list->forward_canvas_force_draw_over_viewport(viewport);
-	}
 
 	if (show_rulers) {
 		_draw_rulers();