Added register methods for Editor-Only Singletons

Added fetch_editor() for fetching GDScriptNativeClass
Added notification when trying to access editor-only class at runtime
Added documentation
Removed "_extract_name_from_path()" and used "trim_prefix()" instead

addons/godot-next/global/singletons.gd

@@ -36,6 +36,17 @@ static func fetchs(p_name: String) -> Object:
 		return fetch(ct.res)
 	return null
 
+# Returns an editor-only singleton by its class name
+static func fetch_editor(p_class: GDScriptNativeClass) -> Object:
+	if not Engine.editor_hint:
+		push_warning("Cannot access '%s' (editor-only class) at runtime." % p_class.get_class())
+		return null
+
+	var cache: Dictionary = SINGLETON_CACHE.get_cache()
+	if cache.has(p_class):
+		return cache[p_class]
+	return null
+
 # Remove a singleton from the cache and any paths associated with it.
 static func erase(p_script: Script) -> bool:
 	var cache: Dictionary = SINGLETON_CACHE.get_cache()
@@ -64,3 +75,17 @@ static func save_all() -> void:
 
 static func _get_persistent_path(p_script: Script):
 	return p_script.get("SELF_RESOURCE")
+
+# Register all editor-only singletons
+static func _register_editor_singletons(plugin: EditorPlugin):
+	var cache: Dictionary = SINGLETON_CACHE.get_cache()
+
+	cache[UndoRedo] = plugin.get_undo_redo()
+
+	cache[EditorInterface] = plugin.get_editor_interface()
+
+	cache[ScriptEditor] = plugin.get_editor_interface().get_script_editor()
+	cache[EditorSelection] = plugin.get_editor_interface().get_selection()
+	cache[EditorSettings] = plugin.get_editor_interface().get_editor_settings()
+	cache[EditorFileSystem] = plugin.get_editor_interface().get_resource_filesystem()
+	cache[EditorResourcePreview] = plugin.get_editor_interface().get_resource_previewer()

addons/godot-next/godot_next_plugin.gd

@@ -6,6 +6,8 @@ const DelegationInspectorPlugin = preload("res://addons/godot-next/inspector_plu
 var delegation_inspector_plugin
 
 func _enter_tree() -> void:
+	Singletons._register_editor_singletons(self)
+
 	delegation_inspector_plugin = DelegationInspectorPlugin.new()
 	add_inspector_plugin(delegation_inspector_plugin)
 

addons/godot-next/resources/resource_collections/resource_array.gd

@@ -29,13 +29,13 @@ func _init() -> void:
 
 func _get(p_property: String):
 	if p_property.begins_with(DATA_PREFIX):
-		var index := int(_extract_name_from_path(p_property, DATA_PREFIX + "item_"))
+		var index := int(p_property.trim_prefix(DATA_PREFIX + "item_"))
 		return _data[index] if index < _data.size() else null
 	return null
 
 func _set(p_property, p_value):
 	if p_property.begins_with(DATA_PREFIX):
-		var index := int(_extract_name_from_path(p_property, DATA_PREFIX + "item_"))
+		var index := int(p_property.trim_prefix(DATA_PREFIX + "item_"))
 		if not p_value:
 			_data.remove(index)
 			property_list_changed_notify()

addons/godot-next/resources/resource_collections/resource_collection.gd

@@ -28,13 +28,13 @@ var _class_type: ClassType = ClassType.new()
 ##### NOTIFICATIONS #####
 
 func _get(p_property: String):
-	match _extract_name_from_path(p_property, SETUP_PREFIX):
+	match p_property.trim_prefix(SETUP_PREFIX):
 		"base_type":
 			return _type
 	return null
 
 func _set(p_property: String, p_value) -> bool:
-	match _extract_name_from_path(p_property, SETUP_PREFIX):
+	match p_property.trim_prefix(SETUP_PREFIX):
 		"base_type":
 			if _type != p_value:
 				_type = p_value
@@ -75,7 +75,7 @@ func _export_setup_group() -> Array:
 
 # Injects controls to the 'EditorInspectorPlugin'
 func _parse_property(p_plugin: EditorInspectorPlugin, p_pinfo: PropertyInfo) -> bool:
-	match _extract_name_from_path(p_pinfo.name, DATA_PREFIX):
+	match p_pinfo.name.trim_prefix(DATA_PREFIX):
 		"dropdown":
 			var elements = _find_inheritors()
 			var control = InspectorControls.new_dropdown_appender(elements, self, "_on_dropdown_selector_selected")
@@ -90,11 +90,6 @@ func clear() -> void:
 
 ##### PRIVATE METHODS #####
 
-func _extract_name_from_path(p_path: String, p_prefix: String) -> String:
-	if p_path.begins_with(p_prefix):
-		return p_path.substr(p_prefix.length(), p_path.length())
-	return ""
-
 func _instantiate_script(p_script: Script) -> Resource:
 	var res: Resource = null
 	if ClassDB.is_parent_class(p_script.get_instance_base_type(), "Resource"):

addons/godot-next/resources/resource_collections/resource_set.gd

@@ -29,13 +29,13 @@ func _init() -> void:
 
 func _get(p_property: String):
 	if p_property.begins_with(DATA_PREFIX):
-		var key = _extract_name_from_path(p_property, DATA_PREFIX)
+		var key = p_property.trim_prefix(DATA_PREFIX)
 		return _data.get(key, null)
 	return null
 
 func _set(p_property: String, p_value) -> bool:
 	if p_property.begins_with(DATA_PREFIX):
-		var key = _extract_name_from_path(p_property, DATA_PREFIX)
+		var key = p_property.trim_prefix(DATA_PREFIX)
 		if not p_value:
 			#warning-ignore:return_value_discarded
 			_data.erase(key)