From 8be6450a367514216edab62791c5328798556fbf Mon Sep 17 00:00:00 2001
From: Vincent Breitmoser <valodim@mugenguild.com>
Date: Fri, 29 May 2015 21:38:20 +0200
Subject: preserve state in DecryptFilesActivity/-Fragment

---
 .../keychain/ui/DecryptFilesActivity.java          | 47 +++++++---------------
 .../keychain/ui/DecryptFilesFragment.java          | 16 ++++++--
 2 files changed, 26 insertions(+), 37 deletions(-)

diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFilesActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFilesActivity.java
index c9a590c5b..81fb6a392 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFilesActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFilesActivity.java
@@ -21,7 +21,9 @@ import android.app.Activity;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
+import android.support.v4.app.Fragment;
 import android.view.View;
+import android.widget.Toast;
 
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
@@ -37,8 +39,6 @@ public class DecryptFilesActivity extends BaseActivity {
     // intern
     public static final String ACTION_DECRYPT_DATA_OPEN = Constants.INTENT_PREFIX + "DECRYPT_DATA_OPEN";
 
-    DecryptFilesFragment mFragment;
-
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -62,19 +62,12 @@ public class DecryptFilesActivity extends BaseActivity {
 
     /**
      * Handles all actions with this intent
-     *
-     * @param intent
      */
     private void handleActions(Bundle savedInstanceState, Intent intent) {
         String action = intent.getAction();
         String type = intent.getType();
         Uri uri = intent.getData();
 
-        Bundle mFileFragmentBundle = new Bundle();
-
-        /*
-         * Android's Action
-         */
         if (Intent.ACTION_SEND.equals(action) && type != null) {
             // When sending to Keychain Decrypt via share menu
             // Binary via content provider (could also be files)
@@ -88,39 +81,27 @@ public class DecryptFilesActivity extends BaseActivity {
             action = ACTION_DECRYPT_DATA;
         }
 
-        /**
-         * Main Actions
-         */
-        if (ACTION_DECRYPT_DATA.equals(action) && uri != null) {
-            mFileFragmentBundle.putParcelable(DecryptFilesFragment.ARG_URI, uri);
-
-            loadFragment(savedInstanceState, uri, false);
-        } else if (ACTION_DECRYPT_DATA_OPEN.equals(action)) {
-            loadFragment(savedInstanceState, null, true);
-        } else if (ACTION_DECRYPT_DATA.equals(action)) {
-            Log.e(Constants.TAG,
-                    "Include an Uri with setInputData() in your Intent!");
-        }
-    }
-
-    private void loadFragment(Bundle savedInstanceState, Uri uri, boolean openDialog) {
-        // However, if we're being restored from a previous state,
-        // then we don't need to do anything and should return or else
-        // we could end up with overlapping fragments.
+        // No need to initialize fragments if we are being restored
         if (savedInstanceState != null) {
             return;
         }
 
-        // Create an instance of the fragment
-        mFragment = DecryptFilesFragment.newInstance(uri, openDialog);
+        // Definitely need a data uri with the decrypt_data intent
+        if (ACTION_DECRYPT_DATA.equals(action) && uri == null) {
+            Toast.makeText(this, "No data to decrypt!", Toast.LENGTH_LONG).show();
+            setResult(Activity.RESULT_CANCELED);
+            finish();
+        }
+
+        boolean showOpenDialog = ACTION_DECRYPT_DATA_OPEN.equals(action);
+        DecryptFilesFragment frag = DecryptFilesFragment.newInstance(uri, showOpenDialog);
 
         // Add the fragment to the 'fragment_container' FrameLayout
         // NOTE: We use commitAllowingStateLoss() to prevent weird crashes!
         getSupportFragmentManager().beginTransaction()
-                .replace(R.id.decrypt_files_fragment_container, mFragment)
+                .replace(R.id.decrypt_files_fragment_container, frag)
                 .commitAllowingStateLoss();
-        // do it immediately!
-        getSupportFragmentManager().executePendingTransactions();
+
     }
 
 }
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFilesFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFilesFragment.java
index 234362edc..479b8fd93 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFilesFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFilesFragment.java
@@ -111,18 +111,26 @@ public class DecryptFilesFragment extends DecryptFragment {
         return view;
     }
 
+    @Override
+    public void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+
+        outState.putParcelable(ARG_URI, mInputUri);
+    }
+
     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
 
-        setInputUri(getArguments().<Uri>getParcelable(ARG_URI));
+        Bundle state = savedInstanceState != null ? savedInstanceState : getArguments();
+        setInputUri(state.<Uri>getParcelable(ARG_URI));
 
-        if (getArguments().getBoolean(ARG_OPEN_DIRECTLY, false)) {
+        // should only come from args
+        if (state.getBoolean(ARG_OPEN_DIRECTLY, false)) {
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
                 FileHelper.openDocument(DecryptFilesFragment.this, "*/*", REQUEST_CODE_INPUT);
             } else {
-                FileHelper.openFile(DecryptFilesFragment.this, mInputUri, "*/*",
-                        REQUEST_CODE_INPUT);
+                FileHelper.openFile(DecryptFilesFragment.this, mInputUri, "*/*", REQUEST_CODE_INPUT);
             }
         }
     }
-- 
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