Execute scripts when not removing tracking

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

@@ -71,6 +71,7 @@ import android.view.TouchDelegate;
 import android.view.View;
 import android.view.ViewGroup;
 import android.webkit.DownloadListener;
+import android.webkit.WebChromeClient;
 import android.webkit.WebSettings;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
@@ -1408,8 +1409,11 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             ibImages.setVisibility(View.GONE);
             tvBody.setVisibility(View.GONE);
 
+            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+            boolean remove_tracking = prefs.getBoolean("remove_tracking", true);
+
+            // For performance reasons the WebView is created when needed only
             if (!(vwBody instanceof WebView)) {
-                // For performance reasons the WebView is created when needed only
                 WebView webView = new WebView(context) {
                     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
                         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
@@ -1448,6 +1452,9 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                 }
             });
 
+            if (!remove_tracking)
+                webView.setWebChromeClient(new WebChromeClient());
+
             webView.setDownloadListener(new DownloadListener() {
                 public void onDownloadStart(
                         String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {

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

@@ -440,6 +440,19 @@
             app:layout_constraintTop_toBottomOf="@id/tvHtmlHint"
             app:switchPadding="12dp" />
 
+        <TextView
+            android:id="@+id/tvTrackingHint"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="12dp"
+            android:layout_marginEnd="60dp"
+            android:text="@string/title_advanced_tracking_hint"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
+            android:textStyle="italic"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/swTracking" />
+
         <androidx.appcompat.widget.SwitchCompat
             android:id="@+id/swImages"
             android:layout_width="match_parent"
@@ -449,7 +462,7 @@
             android:layout_marginEnd="12dp"
             android:text="@string/title_advanced_images"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/swTracking"
+            app:layout_constraintTop_toBottomOf="@id/tvTrackingHint"
             app:switchPadding="12dp" />
 
         <TextView

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

@@ -193,6 +193,8 @@
     <string name="title_advanced_threading_hint">Group messages related to each other</string>
     <string name="title_advanced_name_email_hint">When disabled only names will be shown when available</string>
     <string name="title_advanced_flags_hint">Note that starred messages will always be kept locally</string>
+    <string name="title_advanced_tracking_hint">Disabling this option enables potential unsafe scripts</string>
+
     <string name="title_advanced_autoexpand_hint">Automatically open message when there is just one message or just one unread message in a conversation</string>
     <string name="title_advanced_autocollapse_hint">Multiple expanded messages will always be closed on \'back\'</string>
     <string name="title_advanced_autoclose_hint">Automatically close conversations when all messages are archived, sent or trashed</string>