Add ability to flag classes as experimental or deprecated.

core/doc_data.h

@@ -66,6 +66,8 @@ public:
 		String return_enum;
 		String qualifiers;
 		String description;
+		bool is_deprecated = false;
+		bool is_experimental = false;
 		Vector<ArgumentDoc> arguments;
 		Vector<int> errors_returned;
 		bool operator<(const MethodDoc &p_method) const {
@@ -105,6 +107,8 @@ public:
 		String enumeration;
 		bool is_bitfield = false;
 		String description;
+		bool is_deprecated = false;
+		bool is_experimental = false;
 		bool operator<(const ConstantDoc &p_const) const {
 			return name < p_const.name;
 		}
@@ -126,6 +130,8 @@ public:
 		String default_value;
 		bool overridden = false;
 		String overrides;
+		bool is_deprecated = false;
+		bool is_experimental = false;
 		bool operator<(const PropertyDoc &p_prop) const {
 			return name < p_prop.name;
 		}
@@ -167,6 +173,8 @@ public:
 		Vector<PropertyDoc> properties;
 		Vector<MethodDoc> annotations;
 		Vector<ThemeItemDoc> theme_properties;
+		bool is_deprecated = false;
+		bool is_experimental = false;
 		bool is_script_doc = false;
 		String script_path;
 		bool operator<(const ClassDoc &p_class) const {

editor/create_dialog.cpp

@@ -296,6 +296,15 @@ void CreateDialog::_configure_search_option_item(TreeItem *r_item, const String
 		r_item->set_icon(0, EditorNode::get_singleton()->get_class_icon(p_type, icon_fallback));
 	}
 
+	bool is_deprecated = EditorHelp::get_doc_data()->class_list[p_type].is_deprecated;
+	bool is_experimental = EditorHelp::get_doc_data()->class_list[p_type].is_experimental;
+
+	if (is_deprecated) {
+		r_item->add_button(0, get_theme_icon("StatusError", SNAME("EditorIcons")), 0, false, TTR("This class is marked as deprecated."));
+	} else if (is_experimental) {
+		r_item->add_button(0, get_theme_icon("NodeWarning", SNAME("EditorIcons")), 0, false, TTR("This class is marked as experimental."));
+	}
+
 	if (!search_box->get_text().is_empty()) {
 		r_item->set_collapsed(false);
 	} else {

editor/doc_tools.cpp

@@ -85,6 +85,9 @@ void DocTools::merge_from(const DocTools &p_data) {
 
 		const DocData::ClassDoc &cf = p_data.class_list[c.name];
 
+		c.is_deprecated = cf.is_deprecated;
+		c.is_experimental = cf.is_experimental;
+
 		c.description = cf.description;
 		c.brief_description = cf.brief_description;
 		c.tutorials = cf.tutorials;
@@ -133,6 +136,8 @@ void DocTools::merge_from(const DocTools &p_data) {
 				const DocData::MethodDoc &mf = cf.constructors[j];
 
 				m.description = mf.description;
+				m.is_deprecated = mf.is_deprecated;
+				m.is_experimental = mf.is_experimental;
 				break;
 			}
 		}
@@ -148,6 +153,8 @@ void DocTools::merge_from(const DocTools &p_data) {
 				const DocData::MethodDoc &mf = cf.methods[j];
 
 				m.description = mf.description;
+				m.is_deprecated = mf.is_deprecated;
+				m.is_experimental = mf.is_experimental;
 				break;
 			}
 		}
@@ -162,6 +169,8 @@ void DocTools::merge_from(const DocTools &p_data) {
 				const DocData::MethodDoc &mf = cf.signals[j];
 
 				m.description = mf.description;
+				m.is_deprecated = mf.is_deprecated;
+				m.is_experimental = mf.is_experimental;
 				break;
 			}
 		}
@@ -176,6 +185,8 @@ void DocTools::merge_from(const DocTools &p_data) {
 				const DocData::ConstantDoc &mf = cf.constants[j];
 
 				m.description = mf.description;
+				m.is_deprecated = mf.is_deprecated;
+				m.is_experimental = mf.is_experimental;
 				break;
 			}
 		}
@@ -190,6 +201,8 @@ void DocTools::merge_from(const DocTools &p_data) {
 				const DocData::MethodDoc &mf = cf.annotations[j];
 
 				m.description = mf.description;
+				m.is_deprecated = mf.is_deprecated;
+				m.is_experimental = mf.is_experimental;
 				break;
 			}
 		}
@@ -204,6 +217,8 @@ void DocTools::merge_from(const DocTools &p_data) {
 				const DocData::PropertyDoc &pf = cf.properties[j];
 
 				p.description = pf.description;
+				p.is_deprecated = pf.is_deprecated;
+				p.is_experimental = pf.is_experimental;
 				break;
 			}
 		}
@@ -266,6 +281,8 @@ void DocTools::merge_from(const DocTools &p_data) {
 				const DocData::MethodDoc &mf = cf.operators[j];
 
 				m.description = mf.description;
+				m.is_deprecated = mf.is_deprecated;
+				m.is_experimental = mf.is_experimental;
 				break;
 			}
 		}
@@ -1007,6 +1024,12 @@ static Error _parse_methods(Ref<XMLParser> &parser, Vector<DocData::MethodDoc> &
 				if (parser->has_attribute("qualifiers")) {
 					method.qualifiers = parser->get_attribute_value("qualifiers");
 				}
+				if (parser->has_attribute("is_deprecated")) {
+					method.is_deprecated = parser->get_attribute_value("is_deprecated").to_lower() == "true";
+				}
+				if (parser->has_attribute("is_experimental")) {
+					method.is_experimental = parser->get_attribute_value("is_experimental").to_lower() == "true";
+				}
 
 				while (parser->read() == OK) {
 					if (parser->get_node_type() == XMLParser::NODE_ELEMENT) {
@@ -1138,6 +1161,16 @@ Error DocTools::_load(Ref<XMLParser> parser) {
 			c.inherits = parser->get_attribute_value("inherits");
 		}
 
+		if (parser->has_attribute("is_deprecated")) {
+			String result = parser->get_attribute_value("is_deprecated");
+			c.is_deprecated = (result == "true" || result == "True" || result == "TRUE" || result == "1");
+		}
+
+		if (parser->has_attribute("is_experimental")) {
+			String result = parser->get_attribute_value("is_experimental");
+			c.is_experimental = (result == "true" || result == "True" || result == "TRUE" || result == "1");
+		}
+
 		while (parser->read() == OK) {
 			if (parser->get_node_type() == XMLParser::NODE_ELEMENT) {
 				String name2 = parser->get_node_name();
@@ -1211,6 +1244,12 @@ Error DocTools::_load(Ref<XMLParser> parser) {
 								if (parser->has_attribute("enum")) {
 									prop2.enumeration = parser->get_attribute_value("enum");
 								}
+								if (parser->has_attribute("is_deprecated")) {
+									prop2.is_deprecated = parser->get_attribute_value("is_deprecated").to_lower() == "true";
+								}
+								if (parser->has_attribute("is_experimental")) {
+									prop2.is_experimental = parser->get_attribute_value("is_experimental").to_lower() == "true";
+								}
 								if (!parser->is_empty()) {
 									parser->read();
 									if (parser->get_node_type() == XMLParser::NODE_TEXT) {
@@ -1275,6 +1314,14 @@ Error DocTools::_load(Ref<XMLParser> parser) {
 								if (parser->has_attribute("is_bitfield")) {
 									constant2.is_bitfield = parser->get_attribute_value("is_bitfield").to_lower() == "true";
 								}
+								if (parser->has_attribute("is_deprecated")) {
+									String result = parser->get_attribute_value("is_deprecated");
+									constant2.is_deprecated = (result == "true" || result == "True" || result == "TRUE" || result == "1");
+								}
+								if (parser->has_attribute("is_experimental")) {
+									String result = parser->get_attribute_value("is_experimental");
+									constant2.is_experimental = (result == "true" || result == "True" || result == "TRUE" || result == "1");
+								}
 								if (!parser->is_empty()) {
 									parser->read();
 									if (parser->get_node_type() == XMLParser::NODE_TEXT) {
@@ -1327,7 +1374,15 @@ static void _write_method_doc(Ref<FileAccess> f, const String &p_name, Vector<Do
 				qualifiers += " qualifiers=\"" + m.qualifiers.xml_escape() + "\"";
 			}
 
-			_write_string(f, 2, "<" + p_name + " name=\"" + m.name.xml_escape() + "\"" + qualifiers + ">");
+			String additional_attributes;
+			if (m.is_deprecated) {
+				additional_attributes += " is_deprecated=\"True\"";
+			}
+			if (m.is_experimental) {
+				additional_attributes += " is_experimental=\"True\"";
+			}
+
+			_write_string(f, 2, "<" + p_name + " name=\"" + m.name.xml_escape() + "\"" + qualifiers + additional_attributes + ">");
 
 			if (!m.return_type.is_empty()) {
 				String enum_text;
@@ -1390,6 +1445,12 @@ Error DocTools::save_classes(const String &p_default_path, const HashMap<String,
 		String header = "<class name=\"" + c.name + "\"";
 		if (!c.inherits.is_empty()) {
 			header += " inherits=\"" + c.inherits + "\"";
+			if (c.is_deprecated) {
+				header += " is_deprecated=\"True\"";
+			}
+			if (c.is_experimental) {
+				header += " is_experimental=\"True\"";
+			}
 		}
 		header += String(" version=\"") + VERSION_BRANCH + "\"";
 		// Reference the XML schema so editors can provide error checking.
@@ -1433,6 +1494,12 @@ Error DocTools::save_classes(const String &p_default_path, const HashMap<String,
 				if (!c.properties[i].default_value.is_empty()) {
 					additional_attributes += " default=\"" + c.properties[i].default_value.xml_escape(true) + "\"";
 				}
+				if (c.properties[i].is_deprecated) {
+					additional_attributes += " is_deprecated=\"True\"";
+				}
+				if (c.properties[i].is_experimental) {
+					additional_attributes += " is_experimental=\"True\"";
+				}
 
 				const DocData::PropertyDoc &p = c.properties[i];
 
@@ -1453,21 +1520,30 @@ Error DocTools::save_classes(const String &p_default_path, const HashMap<String,
 			_write_string(f, 1, "<constants>");
 			for (int i = 0; i < c.constants.size(); i++) {
 				const DocData::ConstantDoc &k = c.constants[i];
+
+				String additional_attributes;
+				if (c.constants[i].is_deprecated) {
+					additional_attributes += " is_deprecated=\"True\"";
+				}
+				if (c.constants[i].is_experimental) {
+					additional_attributes += " is_experimental=\"True\"";
+				}
+
 				if (k.is_value_valid) {
 					if (!k.enumeration.is_empty()) {
 						if (k.is_bitfield) {
-							_write_string(f, 2, "<constant name=\"" + k.name + "\" value=\"" + k.value + "\" enum=\"" + k.enumeration + "\" is_bitfield=\"true\">");
+							_write_string(f, 2, "<constant name=\"" + k.name + "\" value=\"" + k.value + "\" enum=\"" + k.enumeration + "\" is_bitfield=\"true\"" + additional_attributes + ">");
 						} else {
-							_write_string(f, 2, "<constant name=\"" + k.name + "\" value=\"" + k.value + "\" enum=\"" + k.enumeration + "\">");
+							_write_string(f, 2, "<constant name=\"" + k.name + "\" value=\"" + k.value + "\" enum=\"" + k.enumeration + "\"" + additional_attributes + ">");
 						}
 					} else {
-						_write_string(f, 2, "<constant name=\"" + k.name + "\" value=\"" + k.value + "\">");
+						_write_string(f, 2, "<constant name=\"" + k.name + "\" value=\"" + k.value + "\"" + additional_attributes + ">");
 					}
 				} else {
 					if (!k.enumeration.is_empty()) {
-						_write_string(f, 2, "<constant name=\"" + k.name + "\" value=\"platform-dependent\" enum=\"" + k.enumeration + "\">");
+						_write_string(f, 2, "<constant name=\"" + k.name + "\" value=\"platform-dependent\" enum=\"" + k.enumeration + "\"" + additional_attributes + ">");
 					} else {
-						_write_string(f, 2, "<constant name=\"" + k.name + "\" value=\"platform-dependent\">");
+						_write_string(f, 2, "<constant name=\"" + k.name + "\" value=\"platform-dependent\"" + additional_attributes + ">");
 					}
 				}
 				_write_string(f, 3, _translate_doc_string(k.description).strip_edges().xml_escape());

editor/editor_help.cpp

@@ -276,6 +276,23 @@ String EditorHelp::_fix_constant(const String &p_constant) const {
 	return p_constant;
 }
 
+// Macros for assigning the deprecation/experimental information to class members
+#define DEPRECATED_DOC_TAG                                                                  \
+	class_desc->push_color(get_theme_color(SNAME("error_color"), SNAME("Editor")));         \
+	Ref<Texture2D> error_icon = get_theme_icon(SNAME("StatusError"), SNAME("EditorIcons")); \
+	class_desc->add_text(" ");                                                              \
+	class_desc->add_image(error_icon, error_icon->get_width(), error_icon->get_height());   \
+	class_desc->add_text(" (" + TTR("Deprecated") + ")");                                   \
+	class_desc->pop();
+
+#define EXPERIMENTAL_DOC_TAG                                                                    \
+	class_desc->push_color(get_theme_color(SNAME("warning_color"), SNAME("Editor")));           \
+	Ref<Texture2D> warning_icon = get_theme_icon(SNAME("NodeWarning"), SNAME("EditorIcons"));   \
+	class_desc->add_text(" ");                                                                  \
+	class_desc->add_image(warning_icon, warning_icon->get_width(), warning_icon->get_height()); \
+	class_desc->add_text(" (" + TTR("Experimental") + ")");                                     \
+	class_desc->pop();
+
 void EditorHelp::_add_method(const DocData::MethodDoc &p_method, bool p_overview) {
 	method_line[p_method.name] = class_desc->get_paragraph_count() - 2; //gets overridden if description
 
@@ -356,6 +373,14 @@ void EditorHelp::_add_method(const DocData::MethodDoc &p_method, bool p_overview
 		class_desc->pop();
 	}
 
+	if (p_method.is_deprecated) {
+		DEPRECATED_DOC_TAG;
+	}
+
+	if (p_method.is_experimental) {
+		EXPERIMENTAL_DOC_TAG;
+	}
+
 	if (p_overview) {
 		class_desc->pop(); //cell
 	}
@@ -565,6 +590,17 @@ void EditorHelp::_update_doc() {
 	class_desc->pop(); // color
 	class_desc->pop(); // font size
 	class_desc->pop(); // font
+
+	if (cd.is_deprecated) {
+		class_desc->add_text(" ");
+		Ref<Texture2D> error_icon = get_theme_icon(SNAME("StatusError"), SNAME("EditorIcons"));
+		class_desc->add_image(error_icon, error_icon->get_width(), error_icon->get_height());
+	}
+	if (cd.is_experimental) {
+		class_desc->add_text(" ");
+		Ref<Texture2D> warning_icon = get_theme_icon(SNAME("NodeWarning"), SNAME("EditorIcons"));
+		class_desc->add_image(warning_icon, warning_icon->get_width(), warning_icon->get_height());
+	}
 	class_desc->add_newline();
 
 	const String non_breaking_space = String::chr(160);
@@ -627,6 +663,26 @@ void EditorHelp::_update_doc() {
 		}
 	}
 
+	// Note if deprecated.
+	if (cd.is_deprecated) {
+		Ref<Texture2D> error_icon = get_theme_icon(SNAME("StatusError"), SNAME("EditorIcons"));
+		class_desc->push_color(get_theme_color(SNAME("error_color"), SNAME("Editor")));
+		class_desc->add_image(error_icon, error_icon->get_width(), error_icon->get_height());
+		class_desc->add_text(String(" ") + TTR("This class is marked as deprecated. It will be removed in future versions."));
+		class_desc->pop();
+		class_desc->add_newline();
+	}
+
+	// Note if experimental.
+	if (cd.is_experimental) {
+		Ref<Texture2D> warning_icon = get_theme_icon(SNAME("NodeWarning"), SNAME("EditorIcons"));
+		class_desc->push_color(get_theme_color(SNAME("warning_color"), SNAME("Editor")));
+		class_desc->add_image(warning_icon, warning_icon->get_width(), warning_icon->get_height());
+		class_desc->add_text(String(" ") + TTR("This class is marked as experimental. It is subject to likely change or possible removal in future versions. Use at your own discretion."));
+		class_desc->pop();
+		class_desc->add_newline();
+	}
+
 	class_desc->add_newline();
 	class_desc->add_newline();
 
@@ -817,6 +873,13 @@ void EditorHelp::_update_doc() {
 				class_desc->pop();
 			}
 
+			if (cd.properties[i].is_deprecated) {
+				DEPRECATED_DOC_TAG;
+			}
+			if (cd.properties[i].is_experimental) {
+				EXPERIMENTAL_DOC_TAG;
+			}
+
 			class_desc->pop();
 			class_desc->pop(); // cell
 
@@ -1066,6 +1129,14 @@ void EditorHelp::_update_doc() {
 
 			class_desc->push_color(symbol_color);
 			class_desc->add_text(")");
+
+			if (cd.signals[i].is_deprecated) {
+				DEPRECATED_DOC_TAG;
+			}
+			if (cd.signals[i].is_experimental) {
+				EXPERIMENTAL_DOC_TAG;
+			}
+
 			class_desc->pop();
 			class_desc->pop(); // end monofont
 			if (!cd.signals[i].description.strip_edges().is_empty()) {
@@ -1187,6 +1258,14 @@ void EditorHelp::_update_doc() {
 					class_desc->pop();
 					class_desc->pop();
 
+					if (enum_list[i].is_deprecated) {
+						DEPRECATED_DOC_TAG;
+					}
+
+					if (enum_list[i].is_experimental) {
+						EXPERIMENTAL_DOC_TAG;
+					}
+
 					class_desc->add_newline();
 
 					if (!enum_list[i].description.strip_edges().is_empty()) {
@@ -1258,6 +1337,14 @@ void EditorHelp::_update_doc() {
 
 				class_desc->pop();
 
+				if (constants[i].is_deprecated) {
+					DEPRECATED_DOC_TAG;
+				}
+
+				if (constants[i].is_experimental) {
+					EXPERIMENTAL_DOC_TAG;
+				}
+
 				class_desc->add_newline();
 
 				if (!constants[i].description.strip_edges().is_empty()) {
@@ -1438,6 +1525,13 @@ void EditorHelp::_update_doc() {
 				class_desc->pop(); // color
 			}
 
+			if (cd.properties[i].is_deprecated) {
+				DEPRECATED_DOC_TAG;
+			}
+			if (cd.properties[i].is_experimental) {
+				EXPERIMENTAL_DOC_TAG;
+			}
+
 			if (cd.is_script_doc && (!cd.properties[i].setter.is_empty() || !cd.properties[i].getter.is_empty())) {
 				class_desc->push_color(symbol_color);
 				class_desc->add_text(" [" + TTR("property:") + " ");

editor/editor_help_search.cpp

@@ -599,6 +599,14 @@ TreeItem *EditorHelpSearch::Runner::_create_class_item(TreeItem *p_parent, const
 		item->set_custom_color(1, disabled_color);
 	}
 
+	if (p_doc->is_deprecated) {
+		Ref<Texture2D> error_icon = ui_service->get_theme_icon("StatusError", SNAME("EditorIcons"));
+		item->add_button(0, error_icon, 0, false, TTR("This class is marked as deprecated."));
+	} else if (p_doc->is_experimental) {
+		Ref<Texture2D> warning_icon = ui_service->get_theme_icon("NodeWarning", SNAME("EditorIcons"));
+		item->add_button(0, warning_icon, 0, false, TTR("This class is marked as experimental."));
+	}
+
 	_match_item(item, p_doc->name);
 
 	return item;
@@ -606,37 +614,37 @@ TreeItem *EditorHelpSearch::Runner::_create_class_item(TreeItem *p_parent, const
 
 TreeItem *EditorHelpSearch::Runner::_create_method_item(TreeItem *p_parent, const DocData::ClassDoc *p_class_doc, const String &p_text, const DocData::MethodDoc *p_doc) {
 	String tooltip = _build_method_tooltip(p_class_doc, p_doc);
-	return _create_member_item(p_parent, p_class_doc->name, "MemberMethod", p_doc->name, p_text, TTRC("Method"), "method", tooltip);
+	return _create_member_item(p_parent, p_class_doc->name, "MemberMethod", p_doc->name, p_text, TTRC("Method"), "method", tooltip, p_doc->is_deprecated, p_doc->is_experimental);
 }
 
 TreeItem *EditorHelpSearch::Runner::_create_signal_item(TreeItem *p_parent, const DocData::ClassDoc *p_class_doc, const DocData::MethodDoc *p_doc) {
 	String tooltip = _build_method_tooltip(p_class_doc, p_doc);
-	return _create_member_item(p_parent, p_class_doc->name, "MemberSignal", p_doc->name, p_doc->name, TTRC("Signal"), "signal", tooltip);
+	return _create_member_item(p_parent, p_class_doc->name, "MemberSignal", p_doc->name, p_doc->name, TTRC("Signal"), "signal", tooltip, p_doc->is_deprecated, p_doc->is_experimental);
 }
 
 TreeItem *EditorHelpSearch::Runner::_create_annotation_item(TreeItem *p_parent, const DocData::ClassDoc *p_class_doc, const String &p_text, const DocData::MethodDoc *p_doc) {
 	String tooltip = _build_method_tooltip(p_class_doc, p_doc);
-	return _create_member_item(p_parent, p_class_doc->name, "MemberAnnotation", p_doc->name, p_text, TTRC("Annotation"), "annotation", tooltip);
+	return _create_member_item(p_parent, p_class_doc->name, "MemberAnnotation", p_doc->name, p_text, TTRC("Annotation"), "annotation", tooltip, p_doc->is_deprecated, p_doc->is_experimental);
 }
 
 TreeItem *EditorHelpSearch::Runner::_create_constant_item(TreeItem *p_parent, const DocData::ClassDoc *p_class_doc, const DocData::ConstantDoc *p_doc) {
 	String tooltip = p_class_doc->name + "." + p_doc->name;
-	return _create_member_item(p_parent, p_class_doc->name, "MemberConstant", p_doc->name, p_doc->name, TTRC("Constant"), "constant", tooltip);
+	return _create_member_item(p_parent, p_class_doc->name, "MemberConstant", p_doc->name, p_doc->name, TTRC("Constant"), "constant", tooltip, p_doc->is_deprecated, p_doc->is_experimental);
 }
 
 TreeItem *EditorHelpSearch::Runner::_create_property_item(TreeItem *p_parent, const DocData::ClassDoc *p_class_doc, const DocData::PropertyDoc *p_doc) {
 	String tooltip = p_doc->type + " " + p_class_doc->name + "." + p_doc->name;
 	tooltip += "\n    " + p_class_doc->name + "." + p_doc->setter + "(value) setter";
 	tooltip += "\n    " + p_class_doc->name + "." + p_doc->getter + "() getter";
-	return _create_member_item(p_parent, p_class_doc->name, "MemberProperty", p_doc->name, p_doc->name, TTRC("Property"), "property", tooltip);
+	return _create_member_item(p_parent, p_class_doc->name, "MemberProperty", p_doc->name, p_doc->name, TTRC("Property"), "property", tooltip, p_doc->is_deprecated, p_doc->is_experimental);
 }
 
 TreeItem *EditorHelpSearch::Runner::_create_theme_property_item(TreeItem *p_parent, const DocData::ClassDoc *p_class_doc, const DocData::ThemeItemDoc *p_doc) {
 	String tooltip = p_doc->type + " " + p_class_doc->name + "." + p_doc->name;
-	return _create_member_item(p_parent, p_class_doc->name, "MemberTheme", p_doc->name, p_doc->name, TTRC("Theme Property"), "theme_item", tooltip);
+	return _create_member_item(p_parent, p_class_doc->name, "MemberTheme", p_doc->name, p_doc->name, TTRC("Theme Property"), "theme_item", tooltip, false, false);
 }
 
-TreeItem *EditorHelpSearch::Runner::_create_member_item(TreeItem *p_parent, const String &p_class_name, const String &p_icon, const String &p_name, const String &p_text, const String &p_type, const String &p_metatype, const String &p_tooltip) {
+TreeItem *EditorHelpSearch::Runner::_create_member_item(TreeItem *p_parent, const String &p_class_name, const String &p_icon, const String &p_name, const String &p_text, const String &p_type, const String &p_metatype, const String &p_tooltip, bool is_deprecated, bool is_experimental) {
 	Ref<Texture2D> icon;
 	String text;
 	if (search_flags & SEARCH_SHOW_HIERARCHY) {
@@ -655,6 +663,14 @@ TreeItem *EditorHelpSearch::Runner::_create_member_item(TreeItem *p_parent, cons
 	item->set_tooltip_text(1, p_tooltip);
 	item->set_metadata(0, "class_" + p_metatype + ":" + p_class_name + ":" + p_name);
 
+	if (is_deprecated) {
+		Ref<Texture2D> error_icon = ui_service->get_theme_icon("StatusError", SNAME("EditorIcons"));
+		item->add_button(0, error_icon, 0, false, TTR("This member is marked as deprecated."));
+	} else if (is_experimental) {
+		Ref<Texture2D> warning_icon = ui_service->get_theme_icon("NodeWarning", SNAME("EditorIcons"));
+		item->add_button(0, warning_icon, 0, false, TTR("This member is marked as experimental."));
+	}
+
 	_match_item(item, p_name);
 
 	return item;

editor/editor_help_search.h

@@ -155,7 +155,7 @@ class EditorHelpSearch::Runner : public RefCounted {
 	TreeItem *_create_constant_item(TreeItem *p_parent, const DocData::ClassDoc *p_class_doc, const DocData::ConstantDoc *p_doc);
 	TreeItem *_create_property_item(TreeItem *p_parent, const DocData::ClassDoc *p_class_doc, const DocData::PropertyDoc *p_doc);
 	TreeItem *_create_theme_property_item(TreeItem *p_parent, const DocData::ClassDoc *p_class_doc, const DocData::ThemeItemDoc *p_doc);
-	TreeItem *_create_member_item(TreeItem *p_parent, const String &p_class_name, const String &p_icon, const String &p_name, const String &p_text, const String &p_type, const String &p_metatype, const String &p_tooltip);
+	TreeItem *_create_member_item(TreeItem *p_parent, const String &p_class_name, const String &p_icon, const String &p_name, const String &p_text, const String &p_type, const String &p_metatype, const String &p_tooltip, bool is_deprecated, bool is_experimental);
 
 public:
 	bool work(uint64_t slot = 100000);

scene/main/node.h

@@ -529,4 +529,8 @@ Error Node::rpc_id(int p_peer_id, const StringName &p_method, VarArgs... p_args)
 	return rpcp(p_peer_id, p_method, sizeof...(p_args) == 0 ? nullptr : (const Variant **)argptrs, sizeof...(p_args));
 }
 
+// Add these macro to your class's 'get_configuration_warnings' function to have warnings show up in the scene tree inspector.
+#define DEPRECATED_NODE_WARNING warnings.push_back(RTR("This node is marked as deprecated and will be removed in future versions.\nPlease check the Godot documentation for information about migration."));
+#define EXPERIMENTAL_NODE_WARNING warnings.push_back(RTR("This node is marked as experimental and may be subject to removal or major changes in future versions."));
+
 #endif // NODE_H