Added option to disable PDF preview

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

@@ -312,6 +312,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
     private boolean authentication_indicator;
     private boolean infra;
     private boolean tld_flags;
+    private boolean pdf_preview;
 
     private boolean autoclose_unseen;
     private boolean collapse_marked;
@@ -3650,7 +3651,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             List<EntityAttachment> images = new ArrayList<>();
             if (thumbnails && bind_extras) {
                 for (EntityAttachment attachment : attachments)
-                    if (attachment.isPDF() ||
+                    if ((pdf_preview && attachment.isPDF()) ||
                             (attachment.isAttachment() && attachment.isImage())) {
                         images.add(attachment);
                         if (attachment.available && !attachment.isPDF())
@@ -7982,6 +7983,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
         this.authentication_indicator = prefs.getBoolean("authentication_indicator", false);
         this.infra = prefs.getBoolean("infra", false);
         this.tld_flags = prefs.getBoolean("tld_flags", false);
+        this.pdf_preview = prefs.getBoolean("pdf_preview", true);
         this.language_detection = prefs.getBoolean("language_detection", false);
         this.autoclose_unseen = prefs.getBoolean("autoclose_unseen", false);
         this.collapse_marked = prefs.getBoolean("collapse_marked", true);

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

@@ -165,7 +165,7 @@ public class FragmentOptions extends FragmentBase {
             "biometrics",
             "default_light",
             "vt_enabled", "vt_apikey",
-            "webp"
+            "pdf_preview", "webp"
     };
 
     @Override

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

@@ -240,6 +240,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
     private SwitchCompat swNativeDkim;
     private SwitchCompat swNativeArc;
     private EditText etNativeArcWhitelist;
+    private SwitchCompat swPdfPreview;
     private SwitchCompat swWebp;
     private SwitchCompat swEasyCorrect;
     private SwitchCompat swInfra;
@@ -312,7 +313,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
             "max_backoff_power", "logarithmic_backoff",
             "exact_alarms",
             "native_dkim", "native_arc", "native_arc_whitelist",
-            "webp", "easy_correct", "infra", "tld_flags", "dup_msgids", "thread_byref", "mdn",
+            "pdf_preview", "webp", "easy_correct", "infra", "tld_flags", "dup_msgids", "thread_byref", "mdn",
             "app_chooser", "delete_confirmation", "global_keywords", "test_iab"
     };
 
@@ -502,6 +503,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
         swNativeDkim = view.findViewById(R.id.swNativeDkim);
         swNativeArc = view.findViewById(R.id.swNativeArc);
         etNativeArcWhitelist = view.findViewById(R.id.etNativeArcWhitelist);
+        swPdfPreview = view.findViewById(R.id.swPdfPreview);
         swWebp = view.findViewById(R.id.swWebp);
         swEasyCorrect = view.findViewById(R.id.swEasyCorrect);
         swInfra = view.findViewById(R.id.swInfra);
@@ -1886,6 +1888,13 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
             }
         });
 
+        swPdfPreview.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
+                prefs.edit().putBoolean("pdf_preview", checked).apply();
+            }
+        });
+
         swWebp.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
@@ -2716,6 +2725,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
             swNativeArc.setChecked(prefs.getBoolean("native_arc", true));
             etNativeArcWhitelist.setEnabled(swNativeDkim.isEnabled() && swNativeDkim.isChecked());
             etNativeArcWhitelist.setText(prefs.getString("native_arc_whitelist", null));
+            swPdfPreview.setChecked(prefs.getBoolean("pdf_preview", true));
             swWebp.setChecked(prefs.getBoolean("webp", true));
             swEasyCorrect.setChecked(prefs.getBoolean("easy_correct", false));
             swInfra.setChecked(prefs.getBoolean("infra", false));

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

@@ -2066,6 +2066,17 @@
                     app:layout_constraintStart_toStartOf="parent"
                     app:layout_constraintTop_toBottomOf="@id/swNativeArc" />
 
+                <androidx.appcompat.widget.SwitchCompat
+                    android:id="@+id/swPdfPreview"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="12dp"
+                    android:text="@string/title_advanced_pdf_preview"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/etNativeArcWhitelist"
+                    app:switchPadding="12dp" />
+
                 <androidx.appcompat.widget.SwitchCompat
                     android:id="@+id/swWebp"
                     android:layout_width="0dp"
@@ -2074,7 +2085,7 @@
                     android:text="@string/title_advanced_webp"
                     app:layout_constraintEnd_toEndOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@id/etNativeArcWhitelist"
+                    app:layout_constraintTop_toBottomOf="@id/swPdfPreview"
                     app:switchPadding="12dp" />
 
                 <androidx.appcompat.widget.SwitchCompat

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

@@ -908,6 +908,7 @@
     <string name="title_advanced_exact_alarms" translatable="false">Use exact timers</string>
     <string name="title_advanced_native_dkim" translatable="false">Native DKIM verification</string>
     <string name="title_advanced_native_arc" translatable="false">Native ARC verification</string>
+    <string name="title_advanced_pdf_preview" translatable="false">PDF preview</string>
     <string name="title_advanced_webp" translatable="false">Webp</string>
     <string name="title_advanced_easy_correct" translatable="false">Easy correct</string>
     <string name="title_advanced_infra" translatable="false">Show infrastructure</string>