dictionary loading progress is now displayed as a notification

res/drawable-anydpi-v24/ic_notification.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#FFFFFF">
+  <group android:scaleX="0.12126316"
+      android:scaleY="0.12126316"
+      android:translateX="0.96"
+      android:translateY="1.5217317">
+    <group android:translateY="135.80667">
+      <path android:pathData="M82.375,-85.03125Q76.609375,-90.359375,70.140625,-90.359375L50.546875,-90.359375L50.546875,-13.84375Q50.546875,-9.953125,51.40625,-6.421875Q52.28125,-2.890625,54.296875,-0L30.8125,-0Q34.28125,-6.046875,34.28125,-13.84375L34.28125,-90.359375L12.96875,-90.359375Q8.5,-90.359375,3.171875,-85.03125L3.171875,-103L82.375,-103L82.375,-85.03125Z"
+          android:fillColor="#000000"/>
+      <path android:pathData="M109.1875,-71.90625Q109.1875,-66.21875,109.90625,-62.5625Q110.625,-58.90625,112.28125,-56.78125Q113.9375,-54.671875,116.453125,-53.9375Q118.984375,-53.203125,122.578125,-53.203125L166.35938,-53.203125L166.35938,-75.421875Q166.35938,-80.09375,165.48438,-83.234375Q164.625,-86.390625,162.46875,-88.28125Q160.3125,-90.1875,156.78125,-90.984375Q153.25,-91.796875,147.92188,-91.796875L124.015625,-91.796875Q119.984375,-91.796875,117.171875,-90.84375Q114.375,-89.890625,112.5625,-87.625Q110.765625,-85.359375,109.96875,-81.5625Q109.1875,-77.765625,109.1875,-71.90625ZM114.515625,-22.84375Q113.796875,-21.71875,113.578125,-20.71875Q113.359375,-19.71875,113.359375,-17.3125Q113.359375,-14.1875,116.09375,-12.6875Q118.828125,-11.203125,126.609375,-11.203125L149.35938,-11.203125Q159.15625,-11.203125,162.75,-15.03125Q166.35938,-18.875,166.35938,-27.09375L166.35938,-42L113.65625,-42Q107.3125,-42,103.421875,-42.859375Q99.53125,-43.734375,97.21875,-46.046875Q94.921875,-48.375,94.125,-52.4375Q93.34375,-56.515625,93.34375,-62.90625L93.34375,-81.078125Q93.34375,-87.90625,94.203125,-92.1875Q95.078125,-96.46875,97.65625,-98.859375Q100.25,-101.265625,105.140625,-102.125Q110.046875,-103,118.109375,-103L157.57812,-103Q165.92188,-103,170.8125,-102.28125Q175.71875,-101.5625,178.3125,-99.390625Q180.90625,-97.234375,181.625,-93.484375Q182.34375,-89.75,182.34375,-83.703125L182.34375,-19.296875Q182.34375,-13.25,181.54688,-9.5Q180.76562,-5.765625,178.09375,-3.671875Q175.4375,-1.578125,170.3125,-0.78125Q165.20312,0,156.5625,0L114.65625,0Q109.046875,0,105.375,-0.84375Q101.703125,-1.703125,99.609375,-3.34375Q97.515625,-5,96.71875,-7.5625Q95.9375,-10.140625,95.9375,-13.578125Q95.9375,-17.28125,95.5,-19.203125Q95.078125,-21.140625,93.921875,-22.84375L114.515625,-22.84375Z"
+          android:fillColor="#000000"/>
+    </group>
+  </group>
+</vector>

res/values-bg/strings.xml

@@ -18,10 +18,13 @@
 	<string name="pref_truncatedict">Изтрий речник</string>
 
 	<string name="dictionary_import_bad_char">Неуспешно зареждане. Невалидна дума \"%1$s\" на ред %2$d за език \"%3$s\".</string>
+	<string name="dictionary_import_cancelled">Зареждането на речник е отменено.</string>
 	<string name="dictionary_import_error">Несупешно зареждане на речник за език \"%1$s\" (%2$s).</string>
+	<string name="dictionary_loaded">Готово</string>
 	<string name="dictionary_loading">Зареждане на речник (%1$s)…</string>
 	<string name="dictionary_loading_user_dict">Зареждане на вашия речник…</string>
 	<string name="dictionary_load_title">Зареждане на речник</string>
 	<string name="dictionary_not_found">Неуспешно зареждане. Липсва речник за \"%1$s\".</string>
-	<string name="dictionary_truncated">Речникът е изтрит успешно</string>
+	<string name="dictionary_truncated">Речникът е изтрит успешно.</string>
+
 </resources>

res/values-fr/strings.xml

@@ -17,6 +17,8 @@
 	<string name="pref_truncatedict">Supprimer le dictionaire</string>
 
 	<string name="dictionary_import_error">Echec du chargement de dictionnaire pour langue «%1$s» (%2$s).</string>
+	<string name="dictionary_import_cancelled">Chargement du dictionnaire annulée.</string>
+	<string name="dictionary_loaded">Terminé</string>
 	<string name="dictionary_loading">Chargement du dictionnaire (%1$s)…</string>
 	<string name="dictionary_loading_user_dict">Chargement du dictionnaire utilisateur…</string>
 	<string name="dictionary_load_title">Charger le dictionnaire</string>

res/values-it/strings.xml

@@ -16,6 +16,8 @@
 	<string name="pref_loaduserdict">Carica dizionario utente</string>
 	<string name="pref_truncatedict">Eliminare il dizionario</string>
 
+	<string name="dictionary_import_cancelled">Caricamento dizionario annullato.</string>
+	<string name="dictionary_loaded">Terminato</string>
 	<string name="dictionary_loading">Caricamento dizionario (%1$s)…</string>
 	<string name="dictionary_loading_user_dict">Caricamento dizionario utente…</string>
 	<string name="dictionary_load_title">Caricamento dizionario</string>

res/values-nl/strings.xml

@@ -15,7 +15,7 @@
 	<string name="pref_loaddict">Woordenboek laden</string>
 	<string name="pref_loaduserdict">Gebruikerswoordenboek laden</string>
 	<string name="pref_truncatedict">Woordenboek wissen</string>
-	<string name="dictionary_loading">Woordenboek laden…</string>
+	<string name="dictionary_loading">Woordenboek laden (%1$s)…</string>
 	<string name="dictionary_loading_user_dict">Gebruikerswoordenboek laden…</string>
 	<string name="dictionary_load_title">Woordenboek laden</string>
 	<string name="dictionary_not_found">Laden mislukt. Woordenboek voor %1$s niet gevonden.</string>

res/values-ru/strings.xml

@@ -17,7 +17,9 @@
 	<string name="pref_loaduserdict">Загрузить свой словарь</string>
 	<string name="pref_truncatedict">Очистить словарь</string>
 
+	<string name="dictionary_import_cancelled">Загрузка словаря отменена.</string>
 	<string name="dictionary_import_error">Ошибка загрузки словаря для языка «%1$s» (%2$s).</string>
+	<string name="dictionary_loaded">Завершена</string>
 	<string name="dictionary_loading">Загрузка словаря (%1$s)…</string>
 	<string name="dictionary_loading_user_dict">Загрузка пользовательского словаря…</string>
 	<string name="dictionary_load_title">Загрузить словарь</string>

res/values-uk/strings.xml

@@ -16,7 +16,9 @@
 	<string name="pref_loaduserdict">Завантажити свій словник</string>
 	<string name="pref_truncatedict">Очистити словник</string>
 
+	<string name="dictionary_import_cancelled">Завантаження словника скасовано.</string>
 	<string name="dictionary_import_error">Помилка завантаження словника для мови «%1$s» (%2$s).</string>
+	<string name="dictionary_loaded">Завершено</string>
 	<string name="dictionary_loading">Завантаження словника (%1$s)…</string>
 	<string name="dictionary_loading_user_dict">Завантаження словника користувача…</string>
 	<string name="dictionary_load_title">Завантажити словник</string>

res/values/strings.xml

@@ -22,7 +22,9 @@
 	<string name="pref_truncatedict">Clear dictionary</string>
 
 	<string name="dictionary_import_bad_char">Loading failed. Invalid word \"%1$s\" on line %2$d of language \"%3$s\".</string>
+	<string name="dictionary_import_cancelled">Dictionary import cancelled.</string>
 	<string name="dictionary_import_error">Failed importing dictionary for language \"%1$s\" (%2$s).</string>
+	<string name="dictionary_loaded">Done</string>
 	<string name="dictionary_loading">Loading dictionary (%1$s)…</string>
 	<string name="dictionary_loading_user_dict">Loading user dictionary…</string>
 	<string name="dictionary_load_title">Load dictionary</string>

src/io/github/sspanak/tt9/db/DictionaryImportAlreadyRunningException.java

@@ -0,0 +1,7 @@
+package io.github.sspanak.tt9.db;
+
+public class DictionaryImportAlreadyRunningException extends Exception{
+	public DictionaryImportAlreadyRunningException() {
+		super("Dictionary import is already running.");
+	}
+}

src/io/github/sspanak/tt9/db/DictionaryLoader.java

@@ -23,11 +23,12 @@ public class DictionaryLoader {
 	private final AssetManager assets;
 	private final T9Preferences prefs;
 
-	private boolean isStopped = true;
+	private final Pattern containsPunctuation = Pattern.compile("\\p{Punct}(?<!-)");
+	private Thread loadThread;
+
 	private int currentFile = 0;
 	private long lastProgressUpdate = 0;
 
-	private final Pattern containsPunctuation = Pattern.compile("\\p{Punct}(?<!-)");
 
 	public DictionaryLoader(Context context) {
 		assets = context.getAssets();
@@ -35,27 +36,37 @@ public class DictionaryLoader {
 	}
 
 
-	public void load(Handler handler, ArrayList<Language> languages) {
-		new Thread() {
+	public void load(Handler handler, ArrayList<Language> languages) throws DictionaryImportAlreadyRunningException {
+		if (isRunning()) {
+			throw new DictionaryImportAlreadyRunningException();
+		}
+
+		loadThread = new Thread() {
 			@Override
 			public void run() {
 				currentFile = 0;
-				isStopped = false;
 				// SQLite does not support parallel queries, so let's import them one by one
 				for (Language lang : languages) {
-					if (isStopped) {
+					if (isInterrupted()) {
 						break;
 					}
 					importAll(handler, lang);
 					currentFile++;
 				}
 			}
-		}.start();
+		};
+
+		loadThread.start();
 	}
 
 
 	public void stop() {
-		isStopped = true;
+		loadThread.interrupt();
+	}
+
+
+	public boolean isRunning() {
+		return loadThread != null && loadThread.isAlive();
 	}
 
 
@@ -160,9 +171,9 @@ public class DictionaryLoader {
 		sendProgressMessage(handler, language, 0, 0);
 
 		for (String word; (word = br.readLine()) != null; line++) {
-			if (isStopped) {
+			if (loadThread.isInterrupted()) {
 				br.close();
-				sendProgressMessage(handler, language, 0, 0);
+				sendProgressMessage(handler, language, -1, 0);
 				throw new DictionaryImportAbortedException();
 			}
 

src/io/github/sspanak/tt9/preferences/T9Preferences.java

@@ -162,7 +162,7 @@ public class T9Preferences {
 
 	/************* internal settings *************/
 
-	public int getDictionaryImportProgressUpdateInterval() { return 100; /* ms */ }
+	public int getDictionaryImportProgressUpdateInterval() { return 250; /* ms */ }
 	public int getDictionaryImportWordChunkSize() { return 1000; /* words */ }
 	public int getSuggestionsMax() { return 20; }
 	public int getSuggestionsMin() { return 8; }

src/io/github/sspanak/tt9/ui/DictionaryLoadingBar.java

@@ -0,0 +1,92 @@
+package io.github.sspanak.tt9.ui;
+
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.content.Context;
+import android.content.res.Resources;
+import android.os.Build;
+
+import androidx.core.app.NotificationCompat;
+
+import io.github.sspanak.tt9.R;
+import io.github.sspanak.tt9.languages.Language;
+import io.github.sspanak.tt9.languages.LanguageCollection;
+
+public class DictionaryLoadingBar {
+	private static final int NOTIFICATION_ID = 1;
+	private static final String NOTIFICATION_CHANNEL_ID = "loading-notifications";
+
+	private final NotificationManager manager;
+	private final NotificationCompat.Builder notificationBuilder;
+	private final Resources resources;
+
+	private int maxProgress = 0;
+
+
+	DictionaryLoadingBar(Context context) {
+		resources = context.getResources();
+
+		manager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
+
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+			manager.createNotificationChannel(new NotificationChannel(
+				NOTIFICATION_CHANNEL_ID,
+				"Dictionary Loading Channel",
+				NotificationManager.IMPORTANCE_LOW
+			));
+			notificationBuilder = new NotificationCompat.Builder(context, NOTIFICATION_CHANNEL_ID);
+		} else {
+			notificationBuilder = new NotificationCompat.Builder(context);
+		}
+
+		notificationBuilder
+			.setSmallIcon(R.drawable.ic_notification)
+			.setCategory(NotificationCompat.CATEGORY_PROGRESS)
+			.setOnlyAlertOnce(true);
+	}
+
+
+	private String generateTitle(int languageId) {
+		Language lang = LanguageCollection.getLanguage(languageId);
+
+		if (lang != null) {
+			return resources.getString(R.string.dictionary_loading, lang.getName());
+		}
+
+		return resources.getString(R.string.dictionary_load_title);
+	}
+
+
+	public void show(int currentFile, int currentFileProgress, int languageId) {
+		int totalProgress = 100 * currentFile + currentFileProgress;
+
+		if (currentFileProgress < 0) {
+			hide();
+			return;
+		} else if (totalProgress >= maxProgress) {
+			notificationBuilder
+				.setContentTitle(generateTitle(-1))
+				.setContentText(resources.getString(R.string.dictionary_loaded))
+				.setOngoing(false)
+				.setProgress(0, 0, false);
+		} else {
+			notificationBuilder
+				.setContentTitle(generateTitle(languageId))
+				.setContentText(currentFileProgress + "%")
+				.setOngoing(true)
+				.setProgress(maxProgress, totalProgress, false);
+		}
+
+		manager.notify(NOTIFICATION_ID, notificationBuilder.build());
+	}
+
+
+	public void hide() {
+		manager.cancel(NOTIFICATION_ID);
+	}
+
+
+	public void setFileCount(int count) {
+		maxProgress = count * 100;
+	}
+}

src/io/github/sspanak/tt9/ui/TraditionalT9Settings.java

@@ -2,7 +2,6 @@ package io.github.sspanak.tt9.ui;
 
 import android.app.AlertDialog;
 import android.app.ListActivity;
-import android.app.ProgressDialog;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
@@ -21,6 +20,7 @@ import java.util.ArrayList;
 
 import io.github.sspanak.tt9.R;
 import io.github.sspanak.tt9.db.DictionaryDb;
+import io.github.sspanak.tt9.db.DictionaryImportAlreadyRunningException;
 import io.github.sspanak.tt9.db.DictionaryImportException;
 import io.github.sspanak.tt9.db.DictionaryLoader;
 import io.github.sspanak.tt9.languages.InvalidLanguageCharactersException;
@@ -35,7 +35,7 @@ import io.github.sspanak.tt9.settings_legacy.SettingAdapter;
 public class TraditionalT9Settings extends ListActivity implements DialogInterface.OnCancelListener {
 
 	private DictionaryLoader loader;
-	ProgressDialog progressDialog;
+	DictionaryLoadingBar progressBar;
 
 	Context mContext = null;
 
@@ -43,8 +43,7 @@ public class TraditionalT9Settings extends ListActivity implements DialogInterfa
 	protected void onCreate(Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 
-		// maybe need this?
-		// http://stackoverflow.com/questions/7645880/listview-with-onitemclicklistener-android
+		progressBar = new DictionaryLoadingBar(this);
 
 		// get settings
 		T9Preferences prefs = new T9Preferences(getApplicationContext());
@@ -98,6 +97,10 @@ public class TraditionalT9Settings extends ListActivity implements DialogInterfa
 	}
 
 	private void truncateWords() {
+		if (loader != null && loader.isRunning()) {
+			loader.stop();
+		}
+
 		Handler afterTruncate = new Handler(Looper.getMainLooper()) {
 			@Override
 			public void handleMessage(Message msg) {
@@ -109,7 +112,7 @@ public class TraditionalT9Settings extends ListActivity implements DialogInterfa
 
 	private void loadDictionaries() {
 		ArrayList<Language> languages = LanguageCollection.getAll(T9Preferences.getInstance().getEnabledLanguages());
-		initProgress(100 * languages.size());
+		progressBar.setFileCount(languages.size());
 
 		Handler loadHandler = new Handler(Looper.getMainLooper()) {
 			@Override
@@ -117,7 +120,7 @@ public class TraditionalT9Settings extends ListActivity implements DialogInterfa
 				String error = msg.getData().getString("error", null);
 
 				if (error != null) {
-					hideProgress();
+					progressBar.hide();
 					handleError(
 						error,
 						msg.getData().getInt("languageId", -1),
@@ -125,58 +128,24 @@ public class TraditionalT9Settings extends ListActivity implements DialogInterfa
 						msg.getData().getString("word", "")
 					);
 				} else {
-					int langId = msg.getData().getInt("languageId", -1);
-					Language lang = LanguageCollection.getLanguage(langId);
-					String langName = lang != null ? lang.getName() : "???";
-
-					String title = getResources().getString(R.string.dictionary_loading, langName);
-					showProgress(
+					progressBar.show(
 						msg.getData().getInt("currentFile", 0),
 						msg.getData().getInt("progress", 0),
-						title
+						msg.getData().getInt("languageId", -1)
 					);
 				}
 			}
 		};
 
+		if (loader == null) {
 			loader = new DictionaryLoader(this);
+		}
+
+		try {
 			loader.load(loadHandler, languages);
-	}
-
-
-	private void initProgress(int max) {
-		if (progressDialog == null) {
-			progressDialog = new ProgressDialog(this);
-			progressDialog.setOnCancelListener(TraditionalT9Settings.this);
-			progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
-		}
-
-		progressDialog.setMax(max);
-	}
-
-	private void showProgress(int currentFile, int currentFileProgress, String title) {
-		if (progressDialog == null) {
-			return;
-		}
-
-		if (title != null) {
-			progressDialog.setMessage(title);
-		}
-
-		int totalProgress = 100 * currentFile + currentFileProgress;
-		if (totalProgress <= 0 || totalProgress >= progressDialog.getMax()) {
-			progressDialog.dismiss();
-		} else {
-			progressDialog.setProgress(totalProgress);
-			if (!progressDialog.isShowing()) {
-				progressDialog.show();
-			}
-		}
-	}
-
-	private void hideProgress() {
-		if (progressDialog != null) {
-			progressDialog.dismiss();
+		} catch (DictionaryImportAlreadyRunningException e) {
+			loader.stop();
+			UI.toast(this, getString(R.string.dictionary_import_cancelled));
 		}
 	}