All: Use Lerna to manage monorepo

packages/app-cli/app/gui/NoteMetadataWidget.js

@@ -0,0 +1,34 @@
+const Note = require('@joplinapp/lib/models/Note.js');
+const TextWidget = require('tkwidgets/TextWidget.js');
+
+class NoteMetadataWidget extends TextWidget {
+	constructor() {
+		super();
+		this.noteId_ = 0;
+		this.note_ = null;
+	}
+
+	get noteId() {
+		return this.noteId_;
+	}
+
+	set noteId(v) {
+		// If this is called it means either the note ID has changed OR
+		// the note content has changed, so we always set note_ to null
+		// so that it can be reloaded in onWillRender().
+		this.noteId_ = v;
+		this.note_ = null;
+		this.invalidate();
+	}
+
+	async onWillRender() {
+		if (!this.visible) return;
+
+		if (!this.note_ && this.noteId_) {
+			this.note_ = await Note.load(this.noteId_);
+			this.text = this.note_ ? await Note.minimalSerializeForDisplay(this.note_) : '';
+		}
+	}
+}
+
+module.exports = NoteMetadataWidget;