Simplify PassphraseDialogFragment usage

Move boiler plate code into a simple static show() method, which only
requires a Handler and can be used ad hoc in any FragmentActivity.

1 files changed, 23 insertions, 0 deletions

diff --git a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/PassphraseDialogFragment.java b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/PassphraseDialogFragment.java
index b8db470b4..60dd98c18 100644
--- a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/PassphraseDialogFragment.java
+++ b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/PassphraseDialogFragment.java
@@ -24,10 +24,12 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.content.DialogInterface.OnClickListener;
 import android.os.Bundle;
+import android.os.Handler;
 import android.os.Message;
 import android.os.Messenger;
 import android.os.RemoteException;
 import android.support.v4.app.DialogFragment;
+import android.support.v4.app.FragmentActivity;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -66,6 +68,27 @@ public class PassphraseDialogFragment extends DialogFragment implements OnEditor
     private boolean mCanKB;
 
     /**
+     * Shows passphrase dialog to cache a new passphrase the user enters for using it later for
+     * encryption. Based on mSecretKeyId it asks for a passphrase to open a private key or it asks
+     * for a symmetric passphrase
+     */
+    public static void show(FragmentActivity context, long keyId, Handler returnHandler) {
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(returnHandler);
+
+        try {
+            PassphraseDialogFragment passphraseDialog = PassphraseDialogFragment.newInstance(context,
+                    messenger, keyId);
+
+            passphraseDialog.show(context.getSupportFragmentManager(), "passphraseDialog");
+        } catch (PgpGeneralException e) {
+            Log.d(Constants.TAG, "No passphrase for this secret key, encrypt directly!");
+            // send message to handler to start encryption directly
+            returnHandler.sendEmptyMessage(PassphraseDialogFragment.MESSAGE_OKAY);
+        }
+    }
+
+    /**
      * Creates new instance of this dialog fragment
      *
      * @param secretKeyId secret key id you want to use