Add confirm before exit

Clover/app/src/main/java/org/floens/chan/core/settings/ChanSettings.java

@@ -49,6 +49,7 @@ public class ChanSettings {
     public static final BooleanSetting anonymize;
     public static final BooleanSetting anonymizeIds;
     public static final BooleanSetting repliesButtonsBottom;
+    public static final BooleanSetting confirmExit;
 
     public static final BooleanSetting watchEnabled;
     public static final BooleanSetting watchCountdown;
@@ -92,6 +93,7 @@ public class ChanSettings {
         anonymize = new BooleanSetting(p, "preference_anonymize", false);
         anonymizeIds = new BooleanSetting(p, "preference_anonymize_ids", false);
         repliesButtonsBottom = new BooleanSetting(p, "preference_buttons_bottom", false);
+        confirmExit = new BooleanSetting(p, "preference_confirm_exit", false);
 
         watchEnabled = new BooleanSetting(p, "preference_watch_enabled", false, new Setting.SettingCallback<Boolean>() {
             @Override

Clover/app/src/main/java/org/floens/chan/ui/activity/StartActivity.java

@@ -1,5 +1,7 @@
 package org.floens.chan.ui.activity;
 
+import android.app.AlertDialog;
+import android.content.DialogInterface;
 import android.content.res.Configuration;
 import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
@@ -8,6 +10,7 @@ import android.view.ViewGroup;
 import org.floens.chan.ChanApplication;
 import org.floens.chan.R;
 import org.floens.chan.controller.Controller;
+import org.floens.chan.core.settings.ChanSettings;
 import org.floens.chan.ui.controller.BrowseController;
 import org.floens.chan.ui.controller.RootNavigationController;
 import org.floens.chan.utils.ThemeHelper;
@@ -68,9 +71,23 @@ public class StartActivity extends AppCompatActivity {
     @Override
     public void onBackPressed() {
         if (!stackTop().onBack()) {
-            // Don't destroy the view, let Android do that or it'll create artifacts
-            stackTop().onHide();
-            super.onBackPressed();
+            if (ChanSettings.confirmExit.get()) {
+                new AlertDialog.Builder(this)
+                        .setTitle(R.string.setting_confirm_exit_title)
+                        .setNegativeButton(R.string.cancel, null)
+                        .setPositiveButton(R.string.exit, new DialogInterface.OnClickListener() {
+                            @Override
+                            public void onClick(DialogInterface dialog, int which) {
+                                stackTop().onHide();
+                                StartActivity.super.onBackPressed();
+                            }
+                        })
+                        .show();
+            } else {
+                // Don't destroy the view, let Android do that or it'll create artifacts
+                stackTop().onHide();
+                super.onBackPressed();
+            }
         }
     }
 

Clover/app/src/main/java/org/floens/chan/ui/controller/AdvancedSettingsController.java

@@ -69,6 +69,7 @@ public class AdvancedSettingsController extends SettingsController {
         settings.add(new BooleanSettingView(this, ChanSettings.anonymize, string(R.string.preference_anonymize), null));
         settings.add(new BooleanSettingView(this, ChanSettings.anonymizeIds, string(R.string.preference_anonymize_ids), null));
         settings.add(new BooleanSettingView(this, ChanSettings.repliesButtonsBottom, string(R.string.setting_buttons_bottom), null));
+        settings.add(new BooleanSettingView(this, ChanSettings.confirmExit, string(R.string.setting_confirm_exit), null));
 
         groups.add(settings);
     }

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

@@ -26,6 +26,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     <string name="ok">OK</string>
     <string name="on">On</string>
     <string name="off">Off</string>
+    <string name="exit">Exit</string>
 
     <plurals name="minutes">
         <item quantity="one">%d minute</item>
@@ -229,6 +230,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     <string name="setting_anonymize">Make everyone Anonymous</string>
     <string name="setting_anonymize_ids">Hide IDs</string>
     <string name="setting_buttons_bottom">Reply buttons on the bottom</string>
+    <string name="setting_confirm_exit">Confirm before exit</string>
+    <string name="setting_confirm_exit_title">Confirm exit</string>
 
     <string name="settings_screen_watch">Watcher settings</string>
     <string name="settings_group_watch">Watcher settings</string>