All: Use Lerna to manage monorepo

packages/lib/services/PluginManager.js

@@ -0,0 +1,111 @@
+const Logger = require('../Logger').default;
+
+class PluginManager {
+	constructor() {
+		this.plugins_ = {};
+		this.logger_ = new Logger();
+	}
+
+	setLogger(l) {
+		this.logger_ = l;
+	}
+
+	logger() {
+		return this.logger_;
+	}
+
+	static instance() {
+		if (this.instance_) return this.instance_;
+		this.instance_ = new PluginManager();
+		return this.instance_;
+	}
+
+	register(classes) {
+		if (!Array.isArray(classes)) classes = [classes];
+
+		for (let i = 0; i < classes.length; i++) {
+			const PluginClass = classes[i];
+
+			if (this.plugins_[PluginClass.manifest.name]) throw new Error(`Already registered: ${PluginClass.manifest.name}`);
+
+			this.plugins_[PluginClass.manifest.name] = {
+				Class: PluginClass,
+				instance: null,
+			};
+		}
+	}
+
+	pluginInstance_(name) {
+		const p = this.plugins_[name];
+		if (p.instance) return p.instance;
+		p.instance = new p.Class();
+		p.instance.dispatch = action => this.dispatch_(action);
+		return p.instance;
+	}
+
+	pluginClass_(name) {
+		return this.plugins_[name].Class;
+	}
+
+	onPluginMenuItemTrigger_(event) {
+		const p = this.pluginInstance_(event.pluginName);
+		p.onTrigger({
+			itemName: event.itemName,
+			userData: event.userData,
+		});
+	}
+
+	pluginDialogToShow(pluginStates) {
+		for (const name in pluginStates) {
+			const p = pluginStates[name];
+			if (!p.dialogOpen) continue;
+
+			const Class = this.pluginClass_(name);
+			if (!Class.Dialog) continue;
+
+			return {
+				Dialog: Class.Dialog,
+				props: Object.assign({}, this.dialogProps_(name), { userData: p.userData }),
+			};
+		}
+
+		return null;
+	}
+
+	dialogProps_(name) {
+		return {
+			dispatch: action => this.dispatch_(action),
+			plugin: this.pluginInstance_(name),
+		};
+	}
+
+	menuItems() {
+		let output = [];
+		for (const name in this.plugins_) {
+			const menuItems = this.plugins_[name].Class.manifest.menuItems.slice();
+			if (!menuItems) continue;
+
+			for (let i = 0; i < menuItems.length; i++) {
+				const item = Object.assign({}, menuItems[i]);
+
+				item.click = () => {
+					this.onPluginMenuItemTrigger_({
+						pluginName: name,
+						itemName: item.name,
+						userData: item.userData,
+					});
+				};
+
+				item.accelerator = menuItems[i].accelerator();
+
+				menuItems[i] = item;
+			}
+
+			output = output.concat(menuItems);
+		}
+
+		return output;
+	}
+}
+
+module.exports = PluginManager;