Refactoring

app/src/stub/java/eu/faircode/email/FragmentDialogTranslate.java

@@ -15,4 +15,14 @@ public class FragmentDialogTranslate extends FragmentDialogBase {
                 .setTitle(R.string.title_translate)
                 .create();
     }
+
+    static void Translate(String text, String targetLanguage, ITranslate intf) {
+        // Stub
+    }
+
+    interface ITranslate {
+        void onTranslated(String text);
+
+        void onError(Throwable ex);
+    }
 }

app/src/xlat/java/eu/faircode/email/FragmentDialogTranslate.java

@@ -44,6 +44,28 @@ public class FragmentDialogTranslate extends FragmentDialogBase {
                     public void onClick(DialogInterface dialog, int which) {
                         String targetLanguage = map.get(items[which]);
 
+                        Translate(text, targetLanguage, new ITranslate() {
+                            @Override
+                            public void onTranslated(String text) {
+                                getArguments().putString("translated", text);
+                                sendResult(RESULT_OK);
+                            }
+
+                            @Override
+                            public void onError(Throwable ex) {
+                                Log.unexpectedError(getParentFragmentManager(), ex);
+                            }
+                        });
+                    }
+                })
+                .create();
+    }
+
+    @Override
+    public void onDismiss(@NonNull DialogInterface dialog) {
+    }
+
+    static void Translate(String text, String targetLanguage, ITranslate intf) {
         LanguageIdentifier languageIdentifier = LanguageIdentification.getClient(
                 new LanguageIdentificationOptions.Builder()
                         .setConfidenceThreshold(0.34f)
@@ -57,6 +79,11 @@ public class FragmentDialogTranslate extends FragmentDialogBase {
                                 if (sourceLanguage.equals("und"))
                                     sourceLanguage = TranslateLanguage.ENGLISH;
 
+                                if (sourceLanguage.equals(targetLanguage)) {
+                                    intf.onTranslated(text);
+                                    return;
+                                }
+
                                 TranslatorOptions options = new TranslatorOptions.Builder()
                                         .setSourceLanguage(sourceLanguage)
                                         .setTargetLanguage(targetLanguage)
@@ -75,15 +102,14 @@ public class FragmentDialogTranslate extends FragmentDialogBase {
                                                                         new OnSuccessListener<String>() {
                                                                             @Override
                                                                             public void onSuccess(@NonNull String translatedText) {
-                                                                                                getArguments().putString("translated", translatedText);
-                                                                                                sendResult(RESULT_OK);
+                                                                                intf.onTranslated(translatedText);
                                                                             }
                                                                         })
                                                                 .addOnFailureListener(
                                                                         new OnFailureListener() {
                                                                             @Override
                                                                             public void onFailure(@NonNull Exception ex) {
-                                                                                                Log.unexpectedError(getParentFragmentManager(), ex);
+                                                                                intf.onError(ex);
                                                                             }
                                                                         });
                                                     }
@@ -92,7 +118,7 @@ public class FragmentDialogTranslate extends FragmentDialogBase {
                                                 new OnFailureListener() {
                                                     @Override
                                                     public void onFailure(@NonNull Exception ex) {
-                                                                        Log.unexpectedError(getParentFragmentManager(), ex);
+                                                        intf.onError(ex);
                                                     }
                                                 });
                             }
@@ -101,15 +127,14 @@ public class FragmentDialogTranslate extends FragmentDialogBase {
                         new OnFailureListener() {
                             @Override
                             public void onFailure(@NonNull Exception ex) {
-                                                Log.unexpectedError(getParentFragmentManager(), ex);
+                                intf.onError(ex);
                             }
                         });
     }
-                })
-                .create();
-    }
 
-    @Override
-    public void onDismiss(@NonNull DialogInterface dialog) {
+    interface ITranslate {
+        void onTranslated(String text);
+
+        void onError(Throwable ex);
     }
 }