[FileSystem Dock] Add option to show some unsupported files in the dock.

doc/classes/EditorSettings.xml

@@ -207,8 +207,11 @@
 			If [code]true[/code], displays folders in the FileSystem dock's bottom pane when split mode is enabled. If [code]false[/code], only files will be displayed in the bottom pane. Split mode can be toggled by pressing the icon next to the [code]res://[/code] folder path.
 			[b]Note:[/b] This setting has no effect when split mode is disabled (which is the default).
 		</member>
+		<member name="docks/filesystem/other_file_extensions" type="String" setter="" getter="">
+			A comma separated list of unsupported file extensions to show in the FileSystem dock, e.g. [code]"ico,icns"[/code].
+		</member>
 		<member name="docks/filesystem/textfile_extensions" type="String" setter="" getter="">
-			List of file extensions to consider as editable text files in the FileSystem dock (by double-clicking on the files).
+			A comma separated list of file extensions to consider as editable text files in the FileSystem dock (by double-clicking on the files), e.g. [code]"txt,md,cfg,ini,log,json,yml,yaml,toml,xml"[/code].
 		</member>
 		<member name="docks/filesystem/thumbnail_size" type="int" setter="" getter="">
 			The thumbnail size to use in the FileSystem dock (in pixels). See also [member filesystem/file_dialog/thumbnail_size].

editor/editor_file_system.cpp

@@ -1075,7 +1075,7 @@ void EditorFileSystem::_process_file_system(const ScannedDirectory *p_scan_dir,
 				fi->script_class_name = _get_global_script_class(fi->type, path, &fi->script_class_extends, &fi->script_class_icon_path);
 				fi->modified_time = 0;
 				fi->import_modified_time = 0;
-				fi->import_valid = fi->type == "TextFile" ? true : ResourceLoader::is_import_valid(path);
+				fi->import_valid = (fi->type == "TextFile" || fi->type == "OtherFile") ? true : ResourceLoader::is_import_valid(path);
 
 				ItemAction ia;
 				ia.action = ItemAction::ACTION_FILE_TEST_REIMPORT;
@@ -1118,6 +1118,9 @@ void EditorFileSystem::_process_file_system(const ScannedDirectory *p_scan_dir,
 				if (fi->type == "" && textfile_extensions.has(ext)) {
 					fi->type = "TextFile";
 				}
+				if (fi->type == "" && other_file_extensions.has(ext)) {
+					fi->type = "OtherFile";
+				}
 				fi->uid = ResourceLoader::get_resource_uid(path);
 				fi->script_class_name = _get_global_script_class(fi->type, path, &fi->script_class_extends, &fi->script_class_icon_path);
 				fi->deps = _get_dependencies(path);
@@ -1263,8 +1266,11 @@ void EditorFileSystem::_scan_fs_changes(EditorFileSystemDirectory *p_dir, ScanPr
 					if (fi->type == "" && textfile_extensions.has(ext)) {
 						fi->type = "TextFile";
 					}
+					if (fi->type == "" && other_file_extensions.has(ext)) {
+						fi->type = "OtherFile";
+					}
 					fi->script_class_name = _get_global_script_class(fi->type, path, &fi->script_class_extends, &fi->script_class_icon_path);
-					fi->import_valid = fi->type == "TextFile" ? true : ResourceLoader::is_import_valid(path);
+					fi->import_valid = (fi->type == "TextFile" || fi->type == "OtherFile") ? true : ResourceLoader::is_import_valid(path);
 					fi->import_group_file = ResourceLoader::get_import_group_file(path);
 
 					{
@@ -2118,6 +2124,9 @@ void EditorFileSystem::update_files(const Vector<String> &p_script_paths) {
 			if (type.is_empty() && textfile_extensions.has(file.get_extension())) {
 				type = "TextFile";
 			}
+			if (type.is_empty() && other_file_extensions.has(file.get_extension())) {
+				type = "OtherFile";
+			}
 			String script_class = ResourceLoader::get_resource_script_class(file);
 
 			ResourceUID::ID uid = ResourceLoader::get_resource_uid(file);
@@ -2137,7 +2146,7 @@ void EditorFileSystem::update_files(const Vector<String> &p_script_paths) {
 				EditorFileSystemDirectory::FileInfo *fi = memnew(EditorFileSystemDirectory::FileInfo);
 				fi->file = file_name;
 				fi->import_modified_time = 0;
-				fi->import_valid = type == "TextFile" ? true : ResourceLoader::is_import_valid(file);
+				fi->import_valid = (type == "TextFile" || type == "OtherFile") ? true : ResourceLoader::is_import_valid(file);
 
 				if (idx == fs->files.size()) {
 					fs->files.push_back(fi);
@@ -2161,7 +2170,7 @@ void EditorFileSystem::update_files(const Vector<String> &p_script_paths) {
 			fs->files[cpos]->import_group_file = ResourceLoader::get_import_group_file(file);
 			fs->files[cpos]->modified_time = FileAccess::get_modified_time(file);
 			fs->files[cpos]->deps = _get_dependencies(file);
-			fs->files[cpos]->import_valid = type == "TextFile" ? true : ResourceLoader::is_import_valid(file);
+			fs->files[cpos]->import_valid = (type == "TextFile" || type == "OtherFile") ? true : ResourceLoader::is_import_valid(file);
 
 			if (uid != ResourceUID::INVALID_ID) {
 				if (ResourceUID::get_singleton()->has_id(uid)) {
@@ -2419,6 +2428,9 @@ Error EditorFileSystem::_reimport_group(const String &p_group_file, const Vector
 		if (fs->files[cpos]->type == "" && textfile_extensions.has(file.get_extension())) {
 			fs->files[cpos]->type = "TextFile";
 		}
+		if (fs->files[cpos]->type == "" && other_file_extensions.has(file.get_extension())) {
+			fs->files[cpos]->type = "OtherFile";
+		}
 		fs->files[cpos]->import_valid = err == OK;
 
 		if (ResourceUID::get_singleton()->has_id(uid)) {
@@ -3119,6 +3131,7 @@ void EditorFileSystem::_update_extensions() {
 	valid_extensions.clear();
 	import_extensions.clear();
 	textfile_extensions.clear();
+	other_file_extensions.clear();
 
 	List<String> extensionsl;
 	ResourceLoader::get_recognized_extensions_for_type("", &extensionsl);
@@ -3134,6 +3147,14 @@ void EditorFileSystem::_update_extensions() {
 		valid_extensions.insert(E);
 		textfile_extensions.insert(E);
 	}
+	const Vector<String> other_file_ext = ((String)(EDITOR_GET("docks/filesystem/other_file_extensions"))).split(",", false);
+	for (const String &E : other_file_ext) {
+		if (valid_extensions.has(E)) {
+			continue;
+		}
+		valid_extensions.insert(E);
+		other_file_extensions.insert(E);
+	}
 
 	extensionsl.clear();
 	ResourceFormatImporter::get_singleton()->get_recognized_extensions(&extensionsl);

editor/editor_file_system.h

@@ -235,6 +235,7 @@ class EditorFileSystem : public Node {
 	int _insert_actions_delete_files_directory(EditorFileSystemDirectory *p_dir);
 
 	HashSet<String> textfile_extensions;
+	HashSet<String> other_file_extensions;
 	HashSet<String> valid_extensions;
 	HashSet<String> import_extensions;
 

editor/editor_node.cpp

@@ -825,6 +825,7 @@ void EditorNode::_notification(int p_what) {
 
 			if (EditorSettings::get_singleton()->check_changed_settings_in_group("docks/filesystem")) {
 				HashSet<String> updated_textfile_extensions;
+				HashSet<String> updated_other_file_extensions;
 				bool extensions_match = true;
 				const Vector<String> textfile_ext = ((String)(EDITOR_GET("docks/filesystem/textfile_extensions"))).split(",", false);
 				for (const String &E : textfile_ext) {
@@ -833,9 +834,17 @@ void EditorNode::_notification(int p_what) {
 						extensions_match = false;
 					}
 				}
+				const Vector<String> other_file_ext = ((String)(EDITOR_GET("docks/filesystem/other_file_extensions"))).split(",", false);
+				for (const String &E : other_file_ext) {
+					updated_other_file_extensions.insert(E);
+					if (extensions_match && !other_file_extensions.has(E)) {
+						extensions_match = false;
+					}
+				}
 
-				if (!extensions_match || updated_textfile_extensions.size() < textfile_extensions.size()) {
+				if (!extensions_match || updated_textfile_extensions.size() < textfile_extensions.size() || updated_other_file_extensions.size() < other_file_extensions.size()) {
 					textfile_extensions = updated_textfile_extensions;
+					other_file_extensions = updated_other_file_extensions;
 					EditorFileSystem::get_singleton()->scan();
 				}
 			}
@@ -1326,6 +1335,9 @@ Error EditorNode::load_resource(const String &p_resource, bool p_ignore_broken_d
 		res = ResourceLoader::load(p_resource, "", ResourceFormatLoader::CACHE_MODE_REUSE, &err);
 	} else if (textfile_extensions.has(p_resource.get_extension())) {
 		res = ScriptEditor::get_singleton()->open_file(p_resource);
+	} else if (other_file_extensions.has(p_resource.get_extension())) {
+		OS::get_singleton()->shell_open(ProjectSettings::get_singleton()->globalize_path(p_resource));
+		return OK;
 	}
 	ERR_FAIL_COND_V(!res.is_valid(), ERR_CANT_OPEN);
 
@@ -6980,6 +6992,10 @@ EditorNode::EditorNode() {
 	for (const String &E : textfile_ext) {
 		textfile_extensions.insert(E);
 	}
+	const Vector<String> other_file_ext = ((String)(EDITOR_GET("docks/filesystem/other_file_extensions"))).split(",", false);
+	for (const String &E : other_file_ext) {
+		other_file_extensions.insert(E);
+	}
 
 	resource_preview = memnew(EditorResourcePreview);
 	add_child(resource_preview);

editor/editor_node.h

@@ -488,6 +488,7 @@ private:
 	String import_reload_fn;
 
 	HashSet<String> textfile_extensions;
+	HashSet<String> other_file_extensions;
 	HashSet<FileDialog *> file_dialogs;
 	HashSet<EditorFileDialog *> editor_file_dialogs;
 

editor/editor_settings.cpp

@@ -593,6 +593,7 @@ void EditorSettings::_load_defaults(Ref<ConfigFile> p_extra_config) {
 	EDITOR_SETTING(Variant::INT, PROPERTY_HINT_RANGE, "docks/filesystem/thumbnail_size", 64, "32,128,16")
 	_initial_set("docks/filesystem/always_show_folders", true);
 	_initial_set("docks/filesystem/textfile_extensions", "txt,md,cfg,ini,log,json,yml,yaml,toml,xml");
+	_initial_set("docks/filesystem/other_file_extensions", "ico,icns");
 
 	// Property editor
 	EDITOR_SETTING(Variant::FLOAT, PROPERTY_HINT_RANGE, "docks/property_editor/auto_refresh_interval", 0.2, "0.01,1,0.001"); // Update 5 times per second by default.

editor/export/project_export.cpp

@@ -903,7 +903,7 @@ bool ProjectExportDialog::_fill_tree(EditorFileSystemDirectory *p_dir, TreeItem
 		if (p_export_filter == EditorExportPreset::EXPORT_SELECTED_SCENES && type != "PackedScene") {
 			continue;
 		}
-		if (type == "TextFile") {
+		if (type == "TextFile" || type == "OtherFile") {
 			continue;
 		}
 

editor/filesystem_dock.cpp

@@ -271,7 +271,7 @@ bool FileSystemDock::_create_tree(TreeItem *p_parent, EditorFileSystemDirectory
 		List<FileInfo> file_list;
 		for (int i = 0; i < p_dir->get_file_count(); i++) {
 			String file_type = p_dir->get_file_type(i);
-			if (file_type != "TextFile" && _is_file_type_disabled_by_feature_profile(file_type)) {
+			if (file_type != "TextFile" && file_type != "OtherFile" && _is_file_type_disabled_by_feature_profile(file_type)) {
 				// If type is disabled, file won't be displayed.
 				continue;
 			}