feat: Initial clean release of CHM

packages/app-desktop/gui/KeymapConfig/utils/useCommandStatus.ts

@@ -0,0 +1,34 @@
+import { useState } from 'react';
+import KeymapService from '@joplin/lib/services/KeymapService';
+
+const keymapService = KeymapService.instance();
+
+interface CommandStatus {
+	[commandName: string]: boolean;
+}
+
+const useCommandStatus = (): [CommandStatus, (commandName: string)=> void, (commandName: string)=> void] => {
+	const [status, setStatus] = useState<CommandStatus>(() =>
+		keymapService.getCommandNames().reduce((accumulator: CommandStatus, command: string) => {
+			accumulator[command] = false;
+			return accumulator;
+		}, {}),
+	);
+
+	const disableStatus = (commandName: string) => setStatus(prevStatus => ({ ...prevStatus, [commandName]: false }));
+	const enableStatus = (commandName: string) => setStatus(prevStatus => {
+		// Falsify all the commands; Only one command should be truthy at any given time
+		const newStatus = Object.keys(prevStatus).reduce((accumulator: CommandStatus, command: string) => {
+			accumulator[command] = false;
+			return accumulator;
+		}, {});
+
+		// Make the appropriate command truthful
+		newStatus[commandName] = true;
+		return newStatus;
+	});
+
+	return [status, enableStatus, disableStatus];
+};
+
+export default useCommandStatus;