Add link preview, GIF & open group metadata warnings

res/layout-sw400dp/fragment_enter_chat_url.xml

@@ -40,7 +40,19 @@
         android:id="@+id/joinPublicChatButton"
         android:layout_width="196dp"
         android:layout_height="@dimen/medium_button_height"
-        android:layout_marginBottom="@dimen/medium_spacing"
         android:text="Next" />
 
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginLeft="@dimen/large_spacing"
+        android:layout_marginTop="@dimen/medium_spacing"
+        android:layout_marginRight="@dimen/large_spacing"
+        android:layout_marginBottom="@dimen/medium_spacing"
+        android:textSize="@dimen/very_small_font_size"
+        android:textColor="@color/text"
+        android:alpha="0.6"
+        android:textAlignment="center"
+        android:text="Open groups can be joined by anyone and do not provide full metadata protection" />
+
 </LinearLayout>

res/layout/fragment_enter_chat_url.xml

@@ -22,7 +22,7 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_marginLeft="@dimen/large_spacing"
-        android:layout_marginTop="@dimen/medium_spacing"
+        android:layout_marginTop="@dimen/small_spacing"
         android:layout_marginRight="@dimen/large_spacing"
         android:textSize="@dimen/small_font_size"
         android:textColor="@color/text"
@@ -40,7 +40,19 @@
         android:id="@+id/joinPublicChatButton"
         android:layout_width="196dp"
         android:layout_height="@dimen/medium_button_height"
-        android:layout_marginBottom="@dimen/medium_spacing"
         android:text="Next" />
 
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginLeft="@dimen/large_spacing"
+        android:layout_marginTop="@dimen/small_spacing"
+        android:layout_marginRight="@dimen/large_spacing"
+        android:layout_marginBottom="@dimen/small_spacing"
+        android:textSize="@dimen/very_small_font_size"
+        android:textColor="@color/text"
+        android:alpha="0.6"
+        android:textAlignment="center"
+        android:text="Open groups can be joined by anyone and do not provide full metadata protection" />
+
 </LinearLayout>

src/org/thoughtcrime/securesms/conversation/ConversationActivity.java

@@ -157,16 +157,16 @@ import org.thoughtcrime.securesms.linkpreview.LinkPreviewRepository;
 import org.thoughtcrime.securesms.linkpreview.LinkPreviewUtil;
 import org.thoughtcrime.securesms.linkpreview.LinkPreviewViewModel;
 import org.thoughtcrime.securesms.logging.Log;
-import org.thoughtcrime.securesms.loki.redesign.messaging.LokiAPIUtilities;
 import org.thoughtcrime.securesms.loki.LokiMessageDatabase;
 import org.thoughtcrime.securesms.loki.LokiThreadDatabase;
 import org.thoughtcrime.securesms.loki.LokiThreadDatabaseDelegate;
-import org.thoughtcrime.securesms.loki.redesign.messaging.LokiUserDatabase;
 import org.thoughtcrime.securesms.loki.MultiDeviceUtilities;
-import org.thoughtcrime.securesms.loki.redesign.views.SessionRestoreBannerView;
 import org.thoughtcrime.securesms.loki.redesign.activities.HomeActivity;
+import org.thoughtcrime.securesms.loki.redesign.messaging.LokiAPIUtilities;
+import org.thoughtcrime.securesms.loki.redesign.messaging.LokiUserDatabase;
 import org.thoughtcrime.securesms.loki.redesign.views.FriendRequestViewDelegate;
 import org.thoughtcrime.securesms.loki.redesign.views.MentionCandidateSelectionView;
+import org.thoughtcrime.securesms.loki.redesign.views.SessionRestoreBannerView;
 import org.thoughtcrime.securesms.mediasend.Media;
 import org.thoughtcrime.securesms.mediasend.MediaSendActivity;
 import org.thoughtcrime.securesms.mms.AttachmentManager;
@@ -658,9 +658,9 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
       break;
     case PICK_GIF:
       setMedia(data.getData(),
-               MediaType.GIF,
-               data.getIntExtra(GiphyActivity.EXTRA_WIDTH, 0),
-               data.getIntExtra(GiphyActivity.EXTRA_HEIGHT, 0));
+              MediaType.GIF,
+              data.getIntExtra(GiphyActivity.EXTRA_WIDTH, 0),
+              data.getIntExtra(GiphyActivity.EXTRA_HEIGHT, 0));
       break;
     case SMS_DEFAULT:
       initializeSecurity(isSecureText, isDefaultSms);
@@ -1931,7 +1931,16 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
     case AttachmentTypeSelector.TAKE_PHOTO:
       attachmentManager.capturePhoto(this, TAKE_PHOTO); break;
     case AttachmentTypeSelector.ADD_GIF:
-      AttachmentManager.selectGif(this, PICK_GIF, !isSecureText); break;
+      AlertDialog.Builder builder = new AlertDialog.Builder(this);
+      builder.setTitle("Search GIFs?");
+      builder.setMessage("You will not have full metadata protection when sending GIFs.");
+      builder.setPositiveButton("OK", (dialog, which) -> {
+        AttachmentManager.selectGif(this, PICK_GIF, !isSecureText);
+        dialog.dismiss();
+      });
+      builder.setNegativeButton("Cancel", (dialog, which) -> dialog.dismiss() );
+      builder.create().show();
+      break;
     }
   }
 

src/org/thoughtcrime/securesms/preferences/AppProtectionPreferenceFragment.java

@@ -216,6 +216,25 @@ public class AppProtectionPreferenceFragment extends CorrectedPreferenceFragment
     public boolean onPreferenceChange(Preference preference, Object newValue) {
       boolean enabled = (boolean)newValue;
 
+      if (enabled) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(requireContext());
+        builder.setTitle("Enable Link Previews?");
+        builder.setMessage("You will not have full metadata protection when sending or receiving link previews.");
+        builder.setPositiveButton("OK", (dialog, which) -> dialog.dismiss());
+        builder.setNegativeButton("Cancel", (dialog, which) -> {
+          TextSecurePreferences.setLinkPreviewsEnabled(requireContext(), false);
+          ((SwitchPreferenceCompat)AppProtectionPreferenceFragment.this.findPreference(TextSecurePreferences.LINK_PREVIEWS)).setChecked(false);
+          ApplicationContext.getInstance(requireContext())
+                  .getJobManager()
+                  .add(new MultiDeviceConfigurationUpdateJob(TextSecurePreferences.isReadReceiptsEnabled(requireContext()),
+                          TextSecurePreferences.isTypingIndicatorsEnabled(requireContext()),
+                          TextSecurePreferences.isShowUnidentifiedDeliveryIndicatorsEnabled(requireContext()),
+                          false));
+          dialog.dismiss();
+        });
+        builder.create().show();
+      }
+
       ApplicationContext.getInstance(requireContext())
                         .getJobManager()
                         .add(new MultiDeviceConfigurationUpdateJob(TextSecurePreferences.isReadReceiptsEnabled(requireContext()),

src/org/thoughtcrime/securesms/util/TextSecurePreferences.java

@@ -370,6 +370,10 @@ public class TextSecurePreferences {
     return getBooleanPreference(context, LINK_PREVIEWS, false);
   }
 
+  public static void setLinkPreviewsEnabled(Context context, boolean enabled) {
+    setBooleanPreference(context, LINK_PREVIEWS, enabled);
+  }
+
   public static boolean isGifSearchInGridLayout(Context context) {
     return getBooleanPreference(context, GIF_GRID_LAYOUT, false);
   }