Better hide internal properties from users

editor/editor_help.cpp

@@ -2862,9 +2862,17 @@ void EditorHelpTooltip::parse_tooltip(const String &p_text) {
 	const String &property_name = slices[2];
 	const String &property_args = slices[3];
 
+	String formatted_text;
+
+	// Exclude internal properties, they are not documented.
+	if (type == "internal_property") {
+		formatted_text = "[i]" + TTR("This property can only be set in the Inspector.") + "[/i]";
+		set_text(formatted_text);
+		return;
+	}
+
 	String title;
 	String description;
-	String formatted_text;
 
 	if (type == "class") {
 		title = class_name;

editor/editor_inspector.cpp

@@ -436,6 +436,10 @@ void EditorProperty::set_doc_path(const String &p_doc_path) {
 	doc_path = p_doc_path;
 }
 
+void EditorProperty::set_internal(bool p_internal) {
+	internal = p_internal;
+}
+
 void EditorProperty::update_property() {
 	GDVIRTUAL_CALL(_update_property);
 }
@@ -748,10 +752,10 @@ void EditorProperty::shortcut_input(const Ref<InputEvent> &p_event) {
 		if (ED_IS_SHORTCUT("property_editor/copy_value", p_event)) {
 			menu_option(MENU_COPY_VALUE);
 			accept_event();
-		} else if (ED_IS_SHORTCUT("property_editor/paste_value", p_event) && !is_read_only()) {
+		} else if (!is_read_only() && ED_IS_SHORTCUT("property_editor/paste_value", p_event)) {
 			menu_option(MENU_PASTE_VALUE);
 			accept_event();
-		} else if (ED_IS_SHORTCUT("property_editor/copy_property_path", p_event)) {
+		} else if (!internal && ED_IS_SHORTCUT("property_editor/copy_property_path", p_event)) {
 			menu_option(MENU_COPY_PROPERTY_PATH);
 			accept_event();
 		}
@@ -1036,6 +1040,8 @@ void EditorProperty::_update_popup() {
 	menu->add_icon_shortcut(get_editor_theme_icon(SNAME("ActionPaste")), ED_GET_SHORTCUT("property_editor/paste_value"), MENU_PASTE_VALUE);
 	menu->add_icon_shortcut(get_editor_theme_icon(SNAME("CopyNodePath")), ED_GET_SHORTCUT("property_editor/copy_property_path"), MENU_COPY_PROPERTY_PATH);
 	menu->set_item_disabled(MENU_PASTE_VALUE, is_read_only());
+	menu->set_item_disabled(MENU_COPY_PROPERTY_PATH, internal);
+
 	if (!pin_hidden) {
 		menu->add_separator();
 		if (can_pin) {
@@ -3329,7 +3335,11 @@ void EditorInspector::update_tree() {
 				if (use_doc_hints) {
 					// `|` separator used in `EditorHelpTooltip` for formatting.
 					if (theme_item_name.is_empty()) {
-						ep->set_tooltip_text("property|" + classname + "|" + property_prefix + p.name + "|");
+						if (p.usage & PROPERTY_USAGE_INTERNAL) {
+							ep->set_tooltip_text("internal_property|" + classname + "|" + property_prefix + p.name + "|");
+						} else {
+							ep->set_tooltip_text("property|" + classname + "|" + property_prefix + p.name + "|");
+						}
 					} else {
 						ep->set_tooltip_text("theme_item|" + classname + "|" + theme_item_name + "|");
 					}
@@ -3337,6 +3347,8 @@ void EditorInspector::update_tree() {
 				}
 
 				ep->set_doc_path(doc_path);
+				ep->set_internal(p.usage & PROPERTY_USAGE_INTERNAL);
+
 				ep->update_property();
 				ep->_update_pin_flags();
 				ep->update_editor_property_status();

editor/editor_inspector.h

@@ -74,6 +74,7 @@ private:
 	StringName property;
 	String property_path;
 	String doc_path;
+	bool internal = false;
 	bool has_doc_tooltip = false;
 
 	int property_usage;
@@ -156,6 +157,7 @@ public:
 	EditorInspector *get_parent_inspector() const;
 
 	void set_doc_path(const String &p_doc_path);
+	void set_internal(bool p_internal);
 
 	virtual void update_property();
 	void update_editor_property_status();

modules/gdscript/gdscript_editor.cpp

@@ -1135,7 +1135,7 @@ static void _find_identifiers_in_base(const GDScriptCompletionIdentifier &p_base
 							List<PropertyInfo> members;
 							scr->get_script_property_list(&members);
 							for (const PropertyInfo &E : members) {
-								if (E.usage & (PROPERTY_USAGE_CATEGORY | PROPERTY_USAGE_GROUP | PROPERTY_USAGE_SUBGROUP)) {
+								if (E.usage & (PROPERTY_USAGE_CATEGORY | PROPERTY_USAGE_GROUP | PROPERTY_USAGE_SUBGROUP | PROPERTY_USAGE_INTERNAL)) {
 									continue;
 								}
 								if (E.name.contains("/")) {
@@ -1210,7 +1210,7 @@ static void _find_identifiers_in_base(const GDScriptCompletionIdentifier &p_base
 						List<PropertyInfo> pinfo;
 						ClassDB::get_property_list(type, &pinfo);
 						for (const PropertyInfo &E : pinfo) {
-							if (E.usage & (PROPERTY_USAGE_CATEGORY | PROPERTY_USAGE_GROUP | PROPERTY_USAGE_SUBGROUP)) {
+							if (E.usage & (PROPERTY_USAGE_CATEGORY | PROPERTY_USAGE_GROUP | PROPERTY_USAGE_SUBGROUP | PROPERTY_USAGE_INTERNAL)) {
 								continue;
 							}
 							if (E.name.contains("/")) {
@@ -1273,7 +1273,7 @@ static void _find_identifiers_in_base(const GDScriptCompletionIdentifier &p_base
 					}
 
 					for (const PropertyInfo &E : members) {
-						if (E.usage & (PROPERTY_USAGE_CATEGORY | PROPERTY_USAGE_GROUP | PROPERTY_USAGE_SUBGROUP)) {
+						if (E.usage & (PROPERTY_USAGE_CATEGORY | PROPERTY_USAGE_GROUP | PROPERTY_USAGE_SUBGROUP | PROPERTY_USAGE_INTERNAL)) {
 							continue;
 						}
 						if (!String(E.name).contains("/")) {
@@ -3514,6 +3514,12 @@ static Error _lookup_symbol_from_base(const GDScriptParser::DataType &p_base, co
 				}
 
 				if (ClassDB::has_property(class_name, p_symbol, true)) {
+					PropertyInfo prop_info;
+					ClassDB::get_property_info(class_name, p_symbol, &prop_info, true);
+					if (prop_info.usage & PROPERTY_USAGE_INTERNAL) {
+						return ERR_CANT_RESOLVE;
+					}
+
 					r_result.type = ScriptLanguage::LOOKUP_RESULT_CLASS_PROPERTY;
 					r_result.class_name = base_type.native_type;
 					r_result.class_member = p_symbol;