[macOS] Add support for native help menu search callbacks, integrate editor help.

doc/classes/DisplayServer.xml

@@ -875,6 +875,17 @@
 				Returns [code]true[/code] if the specified [param feature] is supported by the current [DisplayServer], [code]false[/code] otherwise.
 			</description>
 		</method>
+		<method name="help_set_search_callbacks">
+			<return type="void" />
+			<param index="0" name="search_callback" type="Callable" />
+			<param index="1" name="action_callback" type="Callable" />
+			<description>
+				Sets native help system search callbacks.
+				[param search_callback] has the following arguments: [code]String search_string, int result_limit[/code] and return a [Dictionary] with "key, display name" pairs for the search results. Called when the user enters search terms in the [code]Help[/code] menu.
+				[param action_callback] has the following arguments: [code]String key[/code]. Called when the user selects a search result in the [code]Help[/code] menu.
+				[b]Note:[/b] This method is implemented only on macOS.
+			</description>
+		</method>
 		<method name="ime_get_selection" qualifiers="const">
 			<return type="Vector2i" />
 			<description>
@@ -1791,6 +1802,9 @@
 		<constant name="FEATURE_STATUS_INDICATOR" value="22" enum="Feature">
 			Display server supports application status indicators.
 		</constant>
+		<constant name="FEATURE_NATIVE_HELP" value="23" enum="Feature">
+			Display server supports native help system search callbacks. See [method help_set_search_callbacks].
+		</constant>
 		<constant name="MOUSE_MODE_VISIBLE" value="0" enum="MouseMode">
 			Makes the mouse cursor visible if it is hidden.
 		</constant>

editor/editor_help_search.cpp

@@ -37,6 +37,101 @@
 #include "editor/editor_string_names.h"
 #include "editor/themes/editor_scale.h"
 
+bool EditorHelpSearch::_all_terms_in_name(const Vector<String> &p_terms, const String &p_name) const {
+	for (int i = 0; i < p_terms.size(); i++) {
+		if (p_name.findn(p_terms[i]) < 0) {
+			return false;
+		}
+	}
+	return true;
+}
+
+void EditorHelpSearch::_match_method_name_and_push_back(const String &p_term, const Vector<String> &p_terms, Vector<DocData::MethodDoc> &p_methods, const String &p_type, const String &p_metatype, const String &p_class_name, Dictionary &r_result) const {
+	// Constructors, Methods, Operators...
+	for (int i = 0; i < p_methods.size(); i++) {
+		String method_name = p_methods[i].name.to_lower();
+		if (_all_terms_in_name(p_terms, method_name) ||
+				(p_term.begins_with(".") && method_name.begins_with(p_term.substr(1))) ||
+				(p_term.ends_with("(") && method_name.ends_with(p_term.left(p_term.length() - 1).strip_edges())) ||
+				(p_term.begins_with(".") && p_term.ends_with("(") && method_name == p_term.substr(1, p_term.length() - 2).strip_edges())) {
+			r_result[vformat("class_%s:%s:%s", p_metatype, p_class_name, p_methods[i].name)] = vformat("%s > %s: %s", p_class_name, p_type, p_methods[i].name);
+		}
+	}
+}
+
+void EditorHelpSearch::_match_const_name_and_push_back(const String &p_term, const Vector<String> &p_terms, Vector<DocData::ConstantDoc> &p_constants, const String &p_type, const String &p_metatype, const String &p_class_name, Dictionary &r_result) const {
+	for (int i = 0; i < p_constants.size(); i++) {
+		String method_name = p_constants[i].name.to_lower();
+		if (_all_terms_in_name(p_terms, method_name) ||
+				(p_term.begins_with(".") && method_name.begins_with(p_term.substr(1))) ||
+				(p_term.ends_with("(") && method_name.ends_with(p_term.left(p_term.length() - 1).strip_edges())) ||
+				(p_term.begins_with(".") && p_term.ends_with("(") && method_name == p_term.substr(1, p_term.length() - 2).strip_edges())) {
+			r_result[vformat("class_%s:%s:%s", p_metatype, p_class_name, p_constants[i].name)] = vformat("%s > %s: %s", p_class_name, p_type, p_constants[i].name);
+		}
+	}
+}
+
+void EditorHelpSearch::_match_property_name_and_push_back(const String &p_term, const Vector<String> &p_terms, Vector<DocData::PropertyDoc> &p_properties, const String &p_type, const String &p_metatype, const String &p_class_name, Dictionary &r_result) const {
+	for (int i = 0; i < p_properties.size(); i++) {
+		String method_name = p_properties[i].name.to_lower();
+		if (_all_terms_in_name(p_terms, method_name) ||
+				(p_term.begins_with(".") && method_name.begins_with(p_term.substr(1))) ||
+				(p_term.ends_with("(") && method_name.ends_with(p_term.left(p_term.length() - 1).strip_edges())) ||
+				(p_term.begins_with(".") && p_term.ends_with("(") && method_name == p_term.substr(1, p_term.length() - 2).strip_edges())) {
+			r_result[vformat("class_%s:%s:%s", p_metatype, p_class_name, p_properties[i].name)] = vformat("%s > %s: %s", p_class_name, p_type, p_properties[i].name);
+		}
+	}
+}
+
+void EditorHelpSearch::_match_theme_property_name_and_push_back(const String &p_term, const Vector<String> &p_terms, Vector<DocData::ThemeItemDoc> &p_properties, const String &p_type, const String &p_metatype, const String &p_class_name, Dictionary &r_result) const {
+	for (int i = 0; i < p_properties.size(); i++) {
+		String method_name = p_properties[i].name.to_lower();
+		if (_all_terms_in_name(p_terms, method_name) ||
+				(p_term.begins_with(".") && method_name.begins_with(p_term.substr(1))) ||
+				(p_term.ends_with("(") && method_name.ends_with(p_term.left(p_term.length() - 1).strip_edges())) ||
+				(p_term.begins_with(".") && p_term.ends_with("(") && method_name == p_term.substr(1, p_term.length() - 2).strip_edges())) {
+			r_result[vformat("class_%s:%s:%s", p_metatype, p_class_name, p_properties[i].name)] = vformat("%s > %s: %s", p_class_name, p_type, p_properties[i].name);
+		}
+	}
+}
+
+Dictionary EditorHelpSearch::_native_search_cb(const String &p_search_string, int p_result_limit) {
+	Dictionary ret;
+	const String &term = p_search_string.strip_edges().to_lower();
+	Vector<String> terms = term.split_spaces();
+	if (terms.is_empty()) {
+		terms.append(term);
+	}
+
+	for (HashMap<String, DocData::ClassDoc>::Iterator iterator_doc = EditorHelp::get_doc_data()->class_list.begin(); iterator_doc; ++iterator_doc) {
+		DocData::ClassDoc &class_doc = iterator_doc->value;
+		if (class_doc.name.is_empty()) {
+			continue;
+		}
+		if (class_doc.name.findn(term) > -1) {
+			ret[vformat("class_name:%s", class_doc.name)] = class_doc.name;
+		}
+		if (term.length() > 1 || term == "@") {
+			_match_method_name_and_push_back(term, terms, class_doc.constructors, TTRC("Constructor"), "method", class_doc.name, ret);
+			_match_method_name_and_push_back(term, terms, class_doc.methods, TTRC("Method"), "method", class_doc.name, ret);
+			_match_method_name_and_push_back(term, terms, class_doc.operators, TTRC("Operator"), "method", class_doc.name, ret);
+			_match_method_name_and_push_back(term, terms, class_doc.signals, TTRC("Signal"), "signal", class_doc.name, ret);
+			_match_const_name_and_push_back(term, terms, class_doc.constants, TTRC("Constant"), "constant", class_doc.name, ret);
+			_match_property_name_and_push_back(term, terms, class_doc.properties, TTRC("Property"), "property", class_doc.name, ret);
+			_match_theme_property_name_and_push_back(term, terms, class_doc.theme_properties, TTRC("Theme Property"), "theme_item", class_doc.name, ret);
+			_match_method_name_and_push_back(term, terms, class_doc.annotations, TTRC("Annotation"), "annotation", class_doc.name, ret);
+		}
+		if (ret.size() > p_result_limit) {
+			break;
+		}
+	}
+	return ret;
+}
+
+void EditorHelpSearch::_native_action_cb(const String &p_item_string) {
+	emit_signal(SNAME("go_to_help"), p_item_string);
+}
+
 void EditorHelpSearch::_update_results() {
 	String term = search_box->get_text();
 
@@ -94,6 +189,18 @@ void EditorHelpSearch::_confirmed() {
 
 void EditorHelpSearch::_notification(int p_what) {
 	switch (p_what) {
+		case NOTIFICATION_ENTER_TREE: {
+			if (DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_NATIVE_HELP)) {
+				DisplayServer::get_singleton()->help_set_search_callbacks(callable_mp(this, &EditorHelpSearch::_native_search_cb), callable_mp(this, &EditorHelpSearch::_native_action_cb));
+			}
+		} break;
+
+		case NOTIFICATION_EXIT_TREE: {
+			if (DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_NATIVE_HELP)) {
+				DisplayServer::get_singleton()->help_set_search_callbacks();
+			}
+		} break;
+
 		case NOTIFICATION_VISIBILITY_CHANGED: {
 			if (!is_visible()) {
 				tree_cache.clear();

editor/editor_help_search.h

@@ -84,6 +84,15 @@ class EditorHelpSearch : public ConfirmationDialog {
 	void _filter_combo_item_selected(int p_option);
 	void _confirmed();
 
+	bool _all_terms_in_name(const Vector<String> &p_terms, const String &p_name) const;
+	void _match_method_name_and_push_back(const String &p_term, const Vector<String> &p_terms, Vector<DocData::MethodDoc> &p_methods, const String &p_type, const String &p_metatype, const String &p_class_name, Dictionary &r_result) const;
+	void _match_const_name_and_push_back(const String &p_term, const Vector<String> &p_terms, Vector<DocData::ConstantDoc> &p_constants, const String &p_type, const String &p_metatype, const String &p_class_name, Dictionary &r_result) const;
+	void _match_property_name_and_push_back(const String &p_term, const Vector<String> &p_terms, Vector<DocData::PropertyDoc> &p_properties, const String &p_type, const String &p_metatype, const String &p_class_name, Dictionary &r_result) const;
+	void _match_theme_property_name_and_push_back(const String &p_term, const Vector<String> &p_terms, Vector<DocData::ThemeItemDoc> &p_properties, const String &p_type, const String &p_metatype, const String &p_class_name, Dictionary &r_result) const;
+
+	Dictionary _native_search_cb(const String &p_search_string, int p_result_limit);
+	void _native_action_cb(const String &p_item_string);
+
 protected:
 	void _notification(int p_what);
 	static void _bind_methods();

platform/macos/display_server_macos.h

@@ -211,6 +211,9 @@ private:
 
 	IOPMAssertionID screen_keep_on_assertion = kIOPMNullAssertionID;
 
+	Callable help_search_callback;
+	Callable help_action_callback;
+
 	struct MenuCall {
 		Variant tag;
 		Callable callback;
@@ -282,6 +285,10 @@ public:
 	virtual bool has_feature(Feature p_feature) const override;
 	virtual String get_name() const override;
 
+	virtual void help_set_search_callbacks(const Callable &p_search_callback = Callable(), const Callable &p_action_callback = Callable()) override;
+	Callable _help_get_search_callback() const;
+	Callable _help_get_action_callback() const;
+
 	virtual void global_menu_set_popup_callbacks(const String &p_menu_root, const Callable &p_open_callback = Callable(), const Callable &p_close_callback = Callable()) override;
 
 	virtual int global_menu_add_submenu_item(const String &p_menu_root, const String &p_label, const String &p_submenu, int p_index = -1) override;

platform/macos/display_server_macos.mm

@@ -840,6 +840,7 @@ bool DisplayServerMacOS::has_feature(Feature p_feature) const {
 		case FEATURE_EXTEND_TO_TITLE:
 		case FEATURE_SCREEN_CAPTURE:
 		case FEATURE_STATUS_INDICATOR:
+		case FEATURE_NATIVE_HELP:
 			return true;
 		default: {
 		}
@@ -851,6 +852,19 @@ String DisplayServerMacOS::get_name() const {
 	return "macOS";
 }
 
+void DisplayServerMacOS::help_set_search_callbacks(const Callable &p_search_callback, const Callable &p_action_callback) {
+	help_search_callback = p_search_callback;
+	help_action_callback = p_action_callback;
+}
+
+Callable DisplayServerMacOS::_help_get_search_callback() const {
+	return help_search_callback;
+}
+
+Callable DisplayServerMacOS::_help_get_action_callback() const {
+	return help_action_callback;
+}
+
 bool DisplayServerMacOS::_is_menu_opened(NSMenu *p_menu) const {
 	if (submenu_inv.has(p_menu)) {
 		const MenuData &md = submenu[submenu_inv[p_menu]];

platform/macos/godot_application_delegate.h

@@ -36,7 +36,7 @@
 #import <AppKit/AppKit.h>
 #import <Foundation/Foundation.h>
 
-@interface GodotApplicationDelegate : NSObject
+@interface GodotApplicationDelegate : NSObject <NSUserInterfaceItemSearching, NSApplicationDelegate>
 - (void)forceUnbundledWindowActivationHackStep1;
 - (void)forceUnbundledWindowActivationHackStep2;
 - (void)forceUnbundledWindowActivationHackStep3;

platform/macos/godot_application_delegate.mm

@@ -39,6 +39,59 @@
 	return YES;
 }
 
+- (NSArray<NSString *> *)localizedTitlesForItem:(id)item {
+	NSArray *item_name = @[ item[1] ];
+	return item_name;
+}
+
+- (void)searchForItemsWithSearchString:(NSString *)searchString resultLimit:(NSInteger)resultLimit matchedItemHandler:(void (^)(NSArray *items))handleMatchedItems {
+	NSMutableArray *found_items = [[NSMutableArray alloc] init];
+
+	DisplayServerMacOS *ds = (DisplayServerMacOS *)DisplayServer::get_singleton();
+	if (ds && ds->_help_get_search_callback().is_valid()) {
+		Callable cb = ds->_help_get_search_callback();
+
+		Variant ret;
+		Variant search_string = String::utf8([searchString UTF8String]);
+		Variant result_limit = (uint64_t)resultLimit;
+		Callable::CallError ce;
+		const Variant *args[2] = { &search_string, &result_limit };
+
+		cb.callp(args, 2, ret, ce);
+		if (ce.error != Callable::CallError::CALL_OK) {
+			ERR_PRINT(vformat(RTR("Failed to execute help search callback: %s."), Variant::get_callable_error_text(cb, args, 2, ce)));
+		}
+		Dictionary results = ret;
+		for (const Variant *E = results.next(); E; E = results.next(E)) {
+			const String &key = *E;
+			const String &value = results[*E];
+			if (key.length() > 0 && value.length() > 0) {
+				NSArray *item = @[ [NSString stringWithUTF8String:key.utf8().get_data()], [NSString stringWithUTF8String:value.utf8().get_data()] ];
+				[found_items addObject:item];
+			}
+		}
+	}
+
+	handleMatchedItems(found_items);
+}
+
+- (void)performActionForItem:(id)item {
+	DisplayServerMacOS *ds = (DisplayServerMacOS *)DisplayServer::get_singleton();
+	if (ds && ds->_help_get_action_callback().is_valid()) {
+		Callable cb = ds->_help_get_action_callback();
+
+		Variant ret;
+		Variant item_string = String::utf8([item[0] UTF8String]);
+		Callable::CallError ce;
+		const Variant *args[1] = { &item_string };
+
+		cb.callp(args, 1, ret, ce);
+		if (ce.error != Callable::CallError::CALL_OK) {
+			ERR_PRINT(vformat(RTR("Failed to execute help action callback: %s."), Variant::get_callable_error_text(cb, args, 1, ce)));
+		}
+	}
+}
+
 - (void)forceUnbundledWindowActivationHackStep1 {
 	// Step 1: Switch focus to macOS SystemUIServer process.
 	// Required to perform step 2, TransformProcessType will fail if app is already the in focus.

platform/macos/os_macos.mm

@@ -830,6 +830,7 @@ OS_MacOS::OS_MacOS() {
 	id delegate = [[GodotApplicationDelegate alloc] init];
 	ERR_FAIL_NULL(delegate);
 	[NSApp setDelegate:delegate];
+	[NSApp registerUserInterfaceItemSearchHandler:delegate];
 
 	pre_wait_observer = CFRunLoopObserverCreate(kCFAllocatorDefault, kCFRunLoopBeforeWaiting, true, 0, &pre_wait_observer_cb, nullptr);
 	CFRunLoopAddObserver(CFRunLoopGetCurrent(), pre_wait_observer, kCFRunLoopCommonModes);

servers/display_server.cpp

@@ -47,6 +47,10 @@ DisplayServer::DisplayServerCreate DisplayServer::server_create_functions[Displa
 
 int DisplayServer::server_create_count = 1;
 
+void DisplayServer::help_set_search_callbacks(const Callable &p_search_callback, const Callable &p_action_callback) {
+	WARN_PRINT("Native help is not supported by this display server.");
+}
+
 int DisplayServer::global_menu_add_item(const String &p_menu_root, const String &p_label, const Callable &p_callback, const Callable &p_key_callback, const Variant &p_tag, Key p_accel, int p_index) {
 	WARN_PRINT("Global menus not supported by this display server.");
 	return -1;
@@ -633,6 +637,8 @@ void DisplayServer::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("has_feature", "feature"), &DisplayServer::has_feature);
 	ClassDB::bind_method(D_METHOD("get_name"), &DisplayServer::get_name);
 
+	ClassDB::bind_method(D_METHOD("help_set_search_callbacks", "search_callback", "action_callback"), &DisplayServer::help_set_search_callbacks);
+
 	ClassDB::bind_method(D_METHOD("global_menu_set_popup_callbacks", "menu_root", "open_callback", "close_callback"), &DisplayServer::global_menu_set_popup_callbacks);
 	ClassDB::bind_method(D_METHOD("global_menu_add_submenu_item", "menu_root", "label", "submenu", "index"), &DisplayServer::global_menu_add_submenu_item, DEFVAL(-1));
 	ClassDB::bind_method(D_METHOD("global_menu_add_item", "menu_root", "label", "callback", "key_callback", "tag", "accelerator", "index"), &DisplayServer::global_menu_add_item, DEFVAL(Callable()), DEFVAL(Callable()), DEFVAL(Variant()), DEFVAL(Key::NONE), DEFVAL(-1));
@@ -879,6 +885,7 @@ void DisplayServer::_bind_methods() {
 	BIND_ENUM_CONSTANT(FEATURE_EXTEND_TO_TITLE);
 	BIND_ENUM_CONSTANT(FEATURE_SCREEN_CAPTURE);
 	BIND_ENUM_CONSTANT(FEATURE_STATUS_INDICATOR);
+	BIND_ENUM_CONSTANT(FEATURE_NATIVE_HELP);
 
 	BIND_ENUM_CONSTANT(MOUSE_MODE_VISIBLE);
 	BIND_ENUM_CONSTANT(MOUSE_MODE_HIDDEN);

servers/display_server.h

@@ -126,11 +126,14 @@ public:
 		FEATURE_EXTEND_TO_TITLE,
 		FEATURE_SCREEN_CAPTURE,
 		FEATURE_STATUS_INDICATOR,
+		FEATURE_NATIVE_HELP,
 	};
 
 	virtual bool has_feature(Feature p_feature) const = 0;
 	virtual String get_name() const = 0;
 
+	virtual void help_set_search_callbacks(const Callable &p_search_callback = Callable(), const Callable &p_action_callback = Callable());
+
 	virtual void global_menu_set_popup_callbacks(const String &p_menu_root, const Callable &p_open_callback = Callable(), const Callable &p_close_callback = Callable());
 
 	virtual int global_menu_add_submenu_item(const String &p_menu_root, const String &p_label, const String &p_submenu, int p_index = -1);