Added LanguageTool option

FAQ.md

@@ -4843,6 +4843,8 @@ Templates can have the following options:
 <a name="faq180"></a>
 **(180) How do I use LanguageTool?**
 
+LanguageTool need to be enabled in the miscellaneous settings.
+
 After writing some text, you can long press on the save draft button to perform a grammar, style, and spell check via [LanguageTool](https://languagetool.org/).
 Texts with suggestions will be marked and if you tap on a marked suggestion,
 it will be shown by the keyboard if the keyboard supports this,

app/src/main/java/eu/faircode/email/ApplicationEx.java

@@ -636,6 +636,8 @@ public class ApplicationEx extends Application
                 editor.putBoolean("auto_identity", true);
         } else if (version < 1931)
             editor.remove("button_force_light").remove("fake_dark");
+        else if (version < 1933)
+            editor.putBoolean("lt_enabled", true);
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O && !BuildConfig.DEBUG)
             editor.remove("background_service");

app/src/main/java/eu/faircode/email/FragmentCompose.java

@@ -1871,9 +1871,12 @@ public class FragmentCompose extends FragmentBase {
 
         bottom_navigation.findViewById(R.id.action_save).setOnLongClickListener(new View.OnLongClickListener() {
             @Override
-            public boolean onLongClick(View view) {
+            public boolean onLongClick(View v) {
+                if (LanguageTool.isEnabled(v.getContext())) {
                     onLanguageTool();
                     return true;
+                } else
+                    return false;
             }
         });
 

app/src/main/java/eu/faircode/email/FragmentOptionsMisc.java

@@ -37,6 +37,7 @@ import android.graphics.Paint;
 import android.graphics.Typeface;
 import android.graphics.fonts.Font;
 import android.graphics.fonts.SystemFonts;
+import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Debug;
@@ -111,6 +112,9 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
     private TextView tvFtsIndexed;
     private TextView tvFtsPro;
     private Spinner spLanguage;
+    private SwitchCompat swLanguageTool;
+    private TextView tvLanguageToolPrivacy;
+    private ImageButton ibLanguageTool;
     private SwitchCompat swDeepL;
     private ImageButton ibDeepL;
     private TextView tvSdcard;
@@ -212,7 +216,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
     private final static String[] RESET_OPTIONS = new String[]{
             "sort_answers", "shortcuts", "fts",
             "classification", "class_min_probability", "class_min_difference",
-            "language", "deepl_enabled",
+            "language", "lt_enabled", "deepl_enabled",
             "updates", "weekly", "show_changelog",
             "crash_reports", "cleanup_attachments",
             "watchdog", "experiments", "main_log", "protocol", "log_level", "debug", "leak_canary", "test1",
@@ -293,6 +297,9 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
         tvFtsIndexed = view.findViewById(R.id.tvFtsIndexed);
         tvFtsPro = view.findViewById(R.id.tvFtsPro);
         spLanguage = view.findViewById(R.id.spLanguage);
+        swLanguageTool = view.findViewById(R.id.swLanguageTool);
+        tvLanguageToolPrivacy = view.findViewById(R.id.tvLanguageToolPrivacy);
+        ibLanguageTool = view.findViewById(R.id.ibLanguageTool);
         swDeepL = view.findViewById(R.id.swDeepL);
         ibDeepL = view.findViewById(R.id.ibDeepL);
         tvSdcard = view.findViewById(R.id.tvSdcard);
@@ -579,6 +586,28 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
             }
         });
 
+        swLanguageTool.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
+                prefs.edit().putBoolean("lt_enabled", checked).apply();
+            }
+        });
+
+        tvLanguageToolPrivacy.getPaint().setUnderlineText(true);
+        tvLanguageToolPrivacy.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Helper.view(v.getContext(), Uri.parse(Helper.LT_PRIVACY_URI), true);
+            }
+        });
+
+        ibLanguageTool.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Helper.viewFAQ(v.getContext(), 180);
+            }
+        });
+
         swDeepL.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
@@ -1750,6 +1779,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
         if (selected >= 0)
             spLanguage.setSelection(selected);
 
+        swLanguageTool.setChecked(prefs.getBoolean("lt_enabled", false));
         swDeepL.setChecked(prefs.getBoolean("deepl_enabled", false));
         swUpdates.setChecked(prefs.getBoolean("updates", true));
         swCheckWeekly.setChecked(prefs.getBoolean("weekly", Helper.hasPlayStore(getContext())));

app/src/main/java/eu/faircode/email/Helper.java

@@ -193,6 +193,7 @@ public class Helper {
     static final String SUPPORT_URI = "https://contact.faircode.eu/";
     static final String TEST_URI = "https://play.google.com/apps/testing/" + BuildConfig.APPLICATION_ID;
     static final String BIMI_PRIVACY_URI = "https://datatracker.ietf.org/doc/html/draft-brotman-ietf-bimi-guidance-03#section-7.4";
+    static final String LT_PRIVACY_URI = "https://languagetool.org/legal/privacy";
     static final String ID_COMMAND_URI = "https://datatracker.ietf.org/doc/html/rfc2971#section-3.1";
     static final String AUTH_RESULTS_URI = "https://datatracker.ietf.org/doc/html/rfc7601";
     static final String FAVICON_PRIVACY_URI = "https://en.wikipedia.org/wiki/Favicon";

app/src/main/java/eu/faircode/email/LanguageTool.java

@@ -20,6 +20,9 @@ package eu.faircode.email;
 */
 
 import android.content.Context;
+import android.content.SharedPreferences;
+
+import androidx.preference.PreferenceManager;
 
 import org.json.JSONArray;
 import org.json.JSONException;
@@ -41,6 +44,11 @@ public class LanguageTool {
     private static final String LT_URI = "https://api.languagetool.org/v2/";
     private static final int LT_TIMEOUT = 20; // seconds
 
+    static boolean isEnabled(Context context) {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        return prefs.getBoolean("lt_enabled", false);
+    }
+
     static List<Suggestion> getSuggestions(Context context, CharSequence text) throws IOException, JSONException {
         // https://languagetool.org/http-api/swagger-ui/#!/default/post_check
         String request =

app/src/main/res/layout/fragment_options_misc.xml

@@ -306,6 +306,54 @@
                     app:layout_constraintStart_toStartOf="parent"
                     app:layout_constraintTop_toBottomOf="@id/spLanguage" />
 
+                <androidx.appcompat.widget.SwitchCompat
+                    android:id="@+id/swLanguageTool"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="12dp"
+                    android:text="@string/title_advanced_lt"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/tvLanguageHint"
+                    app:switchPadding="12dp" />
+
+                <TextView
+                    android:id="@+id/tvLanguageToolHint"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="6dp"
+                    android:drawableTint="?attr/colorWarning"
+                    android:text="@string/title_advanced_privacy_risk"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                    android:textColor="?attr/colorWarning"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/swLanguageTool" />
+
+                <TextView
+                    android:id="@+id/tvLanguageToolPrivacy"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="12dp"
+                    android:drawableEnd="@drawable/twotone_open_in_new_12"
+                    android:drawablePadding="6dp"
+                    android:drawableTint="?android:attr/textColorLink"
+                    android:text="@string/title_privacy_policy"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                    android:textColor="?android:attr/textColorLink"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/tvLanguageToolHint" />
+
+                <ImageButton
+                    android:id="@+id/ibLanguageTool"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="12dp"
+                    android:contentDescription="@string/title_info"
+                    android:tooltipText="@string/title_info"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@+id/tvLanguageToolPrivacy"
+                    app:srcCompat="@drawable/twotone_info_24" />
+
                 <androidx.appcompat.widget.SwitchCompat
                     android:id="@+id/swDeepL"
                     android:layout_width="0dp"
@@ -315,7 +363,7 @@
                     android:text="@string/title_advanced_deepl"
                     app:layout_constraintEnd_toEndOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@id/tvLanguageHint"
+                    app:layout_constraintTop_toBottomOf="@id/ibLanguageTool"
                     app:switchPadding="12dp" />
 
                 <ImageButton

app/src/main/res/values/strings.xml

@@ -726,6 +726,7 @@
     <string name="title_advanced_class_min_difference">Minimum class difference: %1$s %%</string>
     <string name="title_advanced_language">Language</string>
     <string name="title_advanced_language_system">System</string>
+    <string name="title_advanced_lt">LanguageTool integration</string>
     <string name="title_advanced_deepl">DeepL integration</string>
     <string name="title_advanced_sdcard">I want to use an sdcard</string>
     <string name="title_advanced_watchdog">Periodically check if FairEmail is still active</string>