Mobile: Add startup screen to show progress of db migration

ReactNativeClient/lib/joplin-database.js

@@ -3,6 +3,7 @@ const { Database } = require('lib/database.js');
 const { sprintf } = require('sprintf-js');
 const Resource = require('lib/models/Resource');
 const { shim } = require('lib/shim.js');
+const EventEmitter = require('events');
 
 const structureSql = `
 CREATE TABLE folders (
@@ -125,6 +126,11 @@ class JoplinDatabase extends Database {
 		this.tableFields_ = null;
 		this.version_ = null;
 		this.tableFieldNames_ = {};
+		this.eventEmitter_ = new EventEmitter();
+	}
+
+	eventEmitter() {
+		return this.eventEmitter_;
 	}
 
 	initialized() {
@@ -350,6 +356,8 @@ class JoplinDatabase extends Database {
 
 			let queries = [];
 
+			this.eventEmitter_.emit('startMigration', { version: targetVersion });
+
 			if (targetVersion == 1) {
 				queries = this.wrapQueries(this.sqlStringToLines(structureSql));
 			}

ReactNativeClient/root.js

@@ -2,7 +2,7 @@ import setUpQuickActions from './setUpQuickActions';
 import PluginAssetsLoader from './PluginAssetsLoader';
 
 const React = require('react');
-const { AppState, Keyboard, NativeModules, BackHandler, Animated, View, StatusBar } = require('react-native');
+const { AppState, Keyboard, NativeModules, BackHandler, Animated, View, StatusBar, Text, Image } = require('react-native');
 const SafeAreaView = require('lib/components/SafeAreaView');
 const { connect, Provider } = require('react-redux');
 const { BackButtonService } = require('lib/services/back-button.js');
@@ -376,7 +376,7 @@ function decryptionWorker_resourceMetadataButNotBlobDecrypted() {
 	ResourceFetcher.instance().scheduleAutoAddResources();
 }
 
-async function initialize(dispatch) {
+async function initialize(dispatch, messageHandler) {
 	shimInit();
 
 	Setting.setConstant('env', __DEV__ ? 'dev' : 'prod');
@@ -414,8 +414,13 @@ async function initialize(dispatch) {
 		dbLogger.setLevel(Logger.LEVEL_INFO);
 	}
 
+	const db_startUpgrade = (event) => {
+		messageHandler(`Upgrading database to v${event.version}...`);
+	};
+
 	const db = new JoplinDatabase(new DatabaseDriverReactNative());
 	db.setLogger(dbLogger);
+	db.eventEmitter().on('startMigration', db_startUpgrade);
 	reg.setDb(db);
 
 	reg.dispatch = dispatch;
@@ -452,9 +457,13 @@ async function initialize(dispatch) {
 			// await db.clearForTesting();
 		}
 
+		db.eventEmitter().removeListener('startMigration', db_startUpgrade);
+
 		reg.logger().info('Database is ready.');
 		reg.logger().info('Loading settings...');
 
+		messageHandler('Initialising application...');
+
 		await loadKeychainServiceAndSettings(KeychainServiceDriverMobile);
 
 		if (!Setting.value('clientId')) Setting.setValue('clientId', uuid.create());
@@ -601,6 +610,7 @@ class AppComponent extends React.Component {
 
 		this.state = {
 			sideMenuContentOpacity: new Animated.Value(0),
+			initMessage: '',
 		};
 
 		this.lastSyncStarted_ = defaultState.syncStarted;
@@ -614,20 +624,19 @@ class AppComponent extends React.Component {
 		};
 	}
 
-	async componentDidMount() {
+	componentDidMount() {
-		if (this.props.appState == 'starting') {
+		setTimeout(async () => {
+			// We run initialization code with a small delay to give time
+			// to the view to render "please wait" messages.
+
 			this.props.dispatch({
 				type: 'APP_STATE_SET',
 				state: 'initializing',
 			});
 
-			await initialize(this.props.dispatch);
+			await initialize(this.props.dispatch, (message) => {
-
+				this.setState({ initMessage: message });
-			this.props.dispatch({
-				type: 'APP_STATE_SET',
-				state: 'ready',
 			});
-		}
 
 			BackButtonService.initialize(this.backButtonHandler_);
 
@@ -648,13 +657,19 @@ class AppComponent extends React.Component {
 					reg.logger.info('Cannot handle share - default folder id is not set');
 				}
 			}
+
+			this.props.dispatch({
+				type: 'APP_STATE_SET',
+				state: 'ready',
+			});
+		}, 100);
 	}
 
 	componentWillUnmount() {
 		AppState.removeEventListener('change', this.onAppStateChange_);
 	}
 
-	componentDidUpdate(prevProps) {
+	async componentDidUpdate(prevProps) {
 		if (this.props.showSideMenu !== prevProps.showSideMenu) {
 			Animated.timing(this.state.sideMenuContentOpacity, {
 				toValue: this.props.showSideMenu ? 0.5 : 0,
@@ -699,8 +714,22 @@ class AppComponent extends React.Component {
 		});
 	}
 
+	renderStartupScreen() {
+		return (
+			<View style={{ alignItems: 'center', justifyContent: 'center', flex: 1 }}>
+				<View style={{ alignItems: 'center' }}>
+					<Image style={{ marginBottom: 5 }} source={require('./images/StartUpIcon.png')} />
+					<Text style={{ color: '#444444' }}>{this.state.initMessage}</Text>
+				</View>
+			</View>
+		);
+	}
+
 	render() {
-		if (this.props.appState != 'ready') return null;
+		if (this.props.appState != 'ready') {
+			return this.renderStartupScreen();
+		}
+
 		const theme = themeStyle(this.props.theme);
 
 		let sideMenuContent = null;

Tools/generate-images.js

@@ -281,6 +281,29 @@ const operations = [
 		iconWidth: 46,
 		iconHeight: 46,
 	},
+
+	// ============================================================================
+	// Mobile startup icon
+	// ============================================================================
+
+	{
+		source: 7,
+		dest: 'ReactNativeClient/images/StartUpIcon.png',
+		width: 64,
+		height: 64,
+	},
+	{
+		source: 7,
+		dest: 'ReactNativeClient/images/StartUpIcon@2x.png',
+		width: 128,
+		height: 128,
+	},
+	{
+		source: 7,
+		dest: 'ReactNativeClient/images/StartUpIcon@3x.png',
+		width: 192,
+		height: 192,
+	},
 ];
 
 async function main() {

joplin.code-workspace

@@ -3,11 +3,7 @@
 		{
 			"name": ".",
 			"path": "."
-		},
+		}
-		{
-			"name": "D:/Web/www/nextcloud/apps/joplin",
-			"path": "D:/Web/www/nextcloud/apps/joplin"
-		},
 	],
 	"settings": {
 		"files.exclude": {