fix progress for decrypt

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFilesListFragment.java

@@ -188,14 +188,9 @@ public class DecryptFilesListFragment
     }
 
     @Override
-    protected void onCryptoSetProgress(String msg, int progress, int max) {
+    protected boolean onCryptoSetProgress(String msg, int progress, int max) {
         mAdapter.setProgress(mCurrentInputUri, progress, max, msg);
-    }
-
-    @Override
-    public void showProgressFragment(
-            String progressDialogMessage, int progressDialogStyle, boolean cancelable) {
-        // progress shown inline, so never mind
+        return true;
     }
 
     @Override

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/CryptoOperationFragment.java

@@ -155,6 +155,14 @@ public abstract class CryptoOperationFragment <T extends Parcelable, S extends O
                     onHandleResult(result);
                 }
             }
+
+            @Override
+            protected void onSetProgress(String msg, int progress, int max) {
+                // allow handling of progress in fragment, or delegate upwards
+                if ( ! onCryptoSetProgress(msg, progress, max)) {
+                    super.onSetProgress(msg, progress, max);
+                }
+            }
         };
 
         // Create a new Messenger for the communication back
@@ -213,4 +221,8 @@ public abstract class CryptoOperationFragment <T extends Parcelable, S extends O
 
     }
 
+    protected boolean onCryptoSetProgress(String msg, int progress, int max) {
+        return false;
+    }
+
 }