support global shortcuts with global: prefix

src/public/javascripts/services/keyboard_actions.js

@@ -0,0 +1,73 @@
+import server from "./server.js";
+import utils from "./utils.js";
+
+class KeyboardAction {
+	constructor(params) {
+		/** @property {string} */
+		this.actionName = params.actionName;
+		/** @property {string[]} */
+		this.defaultShortcuts = params.defaultShortcuts;
+		/** @property {string[]} */
+		this.effectiveShortcuts = params.effectiveShortcuts;
+		/** @property {string} */
+		this.description = params.description;
+	}
+
+	addShortcut(shortcut) {
+		this.effectiveShortcuts.push(shortcut);
+	}
+
+	/**
+	 * @param {string|string[]} shortcuts
+	 */
+	replaceShortcuts(shortcuts) {
+		this.effectiveShortcuts = Array.isArray(shortcuts) ? shortcuts : [shortcuts];
+	}
+}
+
+const keyboardActionRepo = {};
+
+const keyboardActionsLoaded = server.get('keyboard-actions').then(actions => {
+	for (const action of actions) {
+		keyboardActionRepo[action.actionName] = new KeyboardAction(action);
+	}
+});
+
+function setActionHandler(actionName, handler) {
+	keyboardActionsLoaded.then(() => {
+		const action = keyboardActionRepo[actionName];
+
+		if (!action) {
+			throw new Error(`Cannot find keyboard action '${actionName}'`);
+		}
+
+		action.handler = handler;
+
+		for (const shortcut of action.effectiveShortcuts) {
+			if (shortcut) {
+				utils.bindGlobalShortcut(shortcut, handler);
+			}
+		}
+	});
+}
+
+async function triggerAction(actionName) {
+	await keyboardActionsLoaded;
+
+	const action = keyboardActionRepo[actionName];
+
+	if (!action) {
+		throw new Error(`Cannot find action ${actionName}`);
+	}
+
+	if (!action.handler) {
+		throw new Error(`Action ${actionName} has no handler`);
+	}
+
+	await action.handler();
+}
+
+export default {
+	setActionHandler,
+	triggerAction
+};