[Editor] Replication plugin to configure MultiplayerSynchronizers.

Allows configuring the MultiplayerSynchornizer in a way similar to
AnimationPlayer.
Properties are added manually, edither as plain properties, or via the
NodePath format for child nodes' properties "path/to/node:property"
relative to the MultiplayerSynchronizer root path.

Nice things to add would be:
- Moving properties up/down in the list.
- Some form of keying, autmatic filling of the replication properity
  line edit.

1 files changed, 108 insertions, 0 deletions

diff --git a/editor/plugins/replication_editor_plugin.h b/editor/plugins/replication_editor_plugin.h
new file mode 100644
index 0000000000..049eda99cc
--- /dev/null
+++ b/editor/plugins/replication_editor_plugin.h
@@ -0,0 +1,108 @@
+/*************************************************************************/
+/*  replication_editor_plugin.h                                          */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* 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.                */
+/*************************************************************************/
+
+#ifndef REPLICATION_EDITOR_PLUGIN_H
+#define REPLICATION_EDITOR_PLUGIN_H
+
+#include "editor/editor_node.h"
+#include "editor/editor_plugin.h"
+#include "scene/resources/scene_replication_config.h"
+
+class ConfirmationDialog;
+class MultiplayerSynchronizer;
+class Tree;
+
+class ReplicationEditor : public VBoxContainer {
+	GDCLASS(ReplicationEditor, VBoxContainer);
+
+private:
+	EditorNode *editor;
+	MultiplayerSynchronizer *current = nullptr;
+
+	AcceptDialog *error_dialog = nullptr;
+	ConfirmationDialog *delete_dialog = nullptr;
+	Button *add_button = nullptr;
+	LineEdit *np_line_edit = nullptr;
+
+	Ref<SceneReplicationConfig> config;
+	NodePath deleting;
+	Tree *tree;
+	bool keying = false;
+
+	Ref<Texture2D> _get_class_icon(const Node *p_node);
+
+	void _add_pressed();
+	void _tree_item_edited();
+	void _tree_button_pressed(Object *p_item, int p_column, int p_id);
+	void _update_checked(const NodePath &p_prop, int p_column, bool p_checked);
+	void _update_config();
+	void _dialog_closed(bool p_confirmed);
+	void _add_property(const NodePath &p_property, bool p_spawn = true, bool p_sync = true);
+
+protected:
+	static void _bind_methods();
+
+	void _notification(int p_what);
+
+public:
+	void update_keying();
+	void edit(MultiplayerSynchronizer *p_object);
+	bool has_keying() const { return keying; }
+	MultiplayerSynchronizer *get_current() const { return current; }
+	void property_keyed(const String &p_property);
+
+	ReplicationEditor(EditorNode *p_node);
+	~ReplicationEditor() {}
+};
+
+class ReplicationEditorPlugin : public EditorPlugin {
+	GDCLASS(ReplicationEditorPlugin, EditorPlugin);
+
+private:
+	EditorNode *editor;
+	ReplicationEditor *repl_editor;
+
+	void _node_removed(Node *p_node);
+	void _keying_changed();
+	void _property_keyed(const String &p_keyed, const Variant &p_value, bool p_advance);
+
+protected:
+	void _notification(int p_what);
+
+public:
+	virtual void edit(Object *p_object) override;
+	virtual bool handles(Object *p_object) const override;
+	virtual void make_visible(bool p_visible) override;
+
+	ReplicationEditorPlugin(EditorNode *p_node);
+	~ReplicationEditorPlugin();
+};
+
+#endif // REPLICATION_EDITOR_PLUGIN_H