use LoaderFragment in ViewKey tabs

Closes #616

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

@@ -23,7 +23,6 @@ import android.database.Cursor;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
 import android.support.v4.app.LoaderManager;
 import android.support.v4.content.CursorLoader;
 import android.support.v4.content.Loader;
@@ -46,7 +45,7 @@ import se.emilsjolander.stickylistheaders.StickyListHeadersAdapter;
 import se.emilsjolander.stickylistheaders.StickyListHeadersListView;
 
 
-public class ViewKeyCertsFragment extends Fragment
+public class ViewKeyCertsFragment extends LoaderFragment
         implements LoaderManager.LoaderCallbacks<Cursor>, AdapterView.OnItemClickListener {
 
     // These are the rows that we will retrieve.
@@ -79,18 +78,19 @@ public class ViewKeyCertsFragment extends Fragment
     private static final int LOADER_ID = 4;
 
     @Override
-    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+    public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.view_key_certs_fragment, container, false);
+        View root = super.onCreateView(inflater, superContainer, savedInstanceState);
+        View view = inflater.inflate(R.layout.view_key_certs_fragment, getContainer());
 
-        return view;
+        mStickyList = (StickyListHeadersListView) view.findViewById(R.id.list);
+
+        return root;
     }
 
     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
 
-        mStickyList = (StickyListHeadersListView) getActivity().findViewById(R.id.list);
-
         if (!getArguments().containsKey(ARG_DATA_URI)) {
             Log.e(Constants.TAG, "Data missing. Should be Uri of key!");
             getActivity().finish();
@@ -120,6 +120,7 @@ public class ViewKeyCertsFragment extends Fragment
 
     @Override
     public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        setContentShown(false);
         // Now create and return a CursorLoader that will take care of
         // creating a Cursor for the data being displayed.
         return new CursorLoader(getActivity(), mDataUri, PROJECTION, null, null, SORT_ORDER);
@@ -132,6 +133,8 @@ public class ViewKeyCertsFragment extends Fragment
         mAdapter.swapCursor(data);
 
         mStickyList.setAdapter(mAdapter);
+
+        setContentShown(true);
     }
 
     /**

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

@@ -44,12 +44,11 @@ import org.sufficientlysecure.keychain.util.Log;
 import java.util.Date;
 
 
-public class ViewKeyKeysFragment extends Fragment implements
+public class ViewKeyKeysFragment extends LoaderFragment implements
         LoaderManager.LoaderCallbacks<Cursor> {
 
     public static final String ARG_DATA_URI = "uri";
 
-    private LinearLayout mContainer;
     private ListView mKeys;
 
     private ViewKeyKeysAdapter mKeysAdapter;
@@ -57,13 +56,13 @@ public class ViewKeyKeysFragment extends Fragment implements
     private Uri mDataUri;
 
     @Override
-    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+    public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.view_key_keys_fragment, container, false);
+        View root = super.onCreateView(inflater, superContainer, savedInstanceState);
+        View view = inflater.inflate(R.layout.view_key_keys_fragment, getContainer());
 
-        mContainer = (LinearLayout) view.findViewById(R.id.container);
         mKeys = (ListView) view.findViewById(R.id.keys);
 
-        return view;
+        return root;
     }
 
     @Override
@@ -81,9 +80,6 @@ public class ViewKeyKeysFragment extends Fragment implements
     }
 
     private void loadData(Uri dataUri) {
-        getActivity().setProgressBarIndeterminateVisibility(true);
-        mContainer.setVisibility(View.GONE);
-
         mDataUri = dataUri;
 
         Log.i(Constants.TAG, "mDataUri: " + mDataUri.toString());
@@ -104,6 +100,7 @@ public class ViewKeyKeysFragment extends Fragment implements
     };
 
     public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        setContentShown(false);
         Uri baseUri = Keys.buildKeysUri(mDataUri);
         return new CursorLoader(getActivity(), baseUri, KEYS_PROJECTION, null, null, null);
     }
@@ -117,8 +114,7 @@ public class ViewKeyKeysFragment extends Fragment implements
         // old cursor once we return.)
         mKeysAdapter.swapCursor(data);
 
-        getActivity().setProgressBarIndeterminateVisibility(false);
+        setContentShown(true);
-        mContainer.setVisibility(View.VISIBLE);
     }
 
     /**

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

@@ -21,15 +21,12 @@ import android.content.Intent;
 import android.database.Cursor;
 import android.net.Uri;
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
 import android.support.v4.app.LoaderManager;
 import android.support.v4.content.CursorLoader;
 import android.support.v4.content.Loader;
-import android.text.format.DateFormat;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.LinearLayout;
 import android.widget.ListView;
 
 import com.devspark.appmsg.AppMsg;
@@ -37,7 +34,6 @@ import com.devspark.appmsg.AppMsg;
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;import org.sufficientlysecure.keychain.provider.KeychainContract;
 import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
-import org.sufficientlysecure.keychain.provider.KeychainContract.Keys;
 import org.sufficientlysecure.keychain.provider.KeychainContract.UserIds;
 import org.sufficientlysecure.keychain.provider.ProviderHelper;
 import org.sufficientlysecure.keychain.ui.adapter.ViewKeyUserIdsAdapter;
@@ -45,12 +41,11 @@ import org.sufficientlysecure.keychain.util.Log;
 
 import java.util.Date;
 
-public class ViewKeyMainFragment extends Fragment implements
+public class ViewKeyMainFragment extends LoaderFragment implements
         LoaderManager.LoaderCallbacks<Cursor> {
 
     public static final String ARG_DATA_URI = "uri";
 
-    private LinearLayout mContainer;
     private View mActionEdit;
     private View mActionEditDivider;
     private View mActionEncrypt;
@@ -70,10 +65,10 @@ public class ViewKeyMainFragment extends Fragment implements
     private Uri mDataUri;
 
     @Override
-    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+    public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.view_key_main_fragment, container, false);
+        View root = super.onCreateView(inflater, superContainer, savedInstanceState);
+        View view = inflater.inflate(R.layout.view_key_main_fragment, getContainer());
 
-        mContainer = (LinearLayout) view.findViewById(R.id.container);
         mUserIds = (ListView) view.findViewById(R.id.view_key_user_ids);
         mActionEdit = view.findViewById(R.id.view_key_action_edit);
         mActionEditDivider = view.findViewById(R.id.view_key_action_edit_divider);
@@ -81,7 +76,7 @@ public class ViewKeyMainFragment extends Fragment implements
         mActionCertify = view.findViewById(R.id.view_key_action_certify);
         mActionCertifyDivider = view.findViewById(R.id.view_key_action_certify_divider);
 
-        return view;
+        return root;
     }
 
     @Override
@@ -99,9 +94,6 @@ public class ViewKeyMainFragment extends Fragment implements
     }
 
     private void loadData(Uri dataUri) {
-        getActivity().setProgressBarIndeterminateVisibility(true);
-        mContainer.setVisibility(View.GONE);
-
         mDataUri = dataUri;
 
         Log.i(Constants.TAG, "mDataUri: " + mDataUri.toString());
@@ -143,6 +135,8 @@ public class ViewKeyMainFragment extends Fragment implements
     static final int INDEX_UNIFIED_HAS_ENCRYPT = 5;
 
     public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        setContentShown(false);
+
         switch (id) {
             case LOADER_ID_UNIFIED: {
                 Uri baseUri = KeyRings.buildUnifiedKeyRingUri(mDataUri);
@@ -219,8 +213,7 @@ public class ViewKeyMainFragment extends Fragment implements
                 break;
 
         }
-        getActivity().setProgressBarIndeterminateVisibility(false);
+        setContentShown(true);
-        mContainer.setVisibility(View.VISIBLE);
     }
 
     /**

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

@@ -53,12 +53,11 @@ import org.sufficientlysecure.keychain.util.QrCodeUtils;
 import java.io.IOException;
 
 
-public class ViewKeyShareFragment extends Fragment implements
+public class ViewKeyShareFragment extends LoaderFragment implements
         LoaderManager.LoaderCallbacks<Cursor> {
 
     public static final String ARG_DATA_URI = "uri";
 
-    private LinearLayout mContainer;
     private TextView mFingerprint;
     private ImageView mFingerprintQrCode;
     private View mFingerprintShareButton;
@@ -77,12 +76,12 @@ public class ViewKeyShareFragment extends Fragment implements
     private Uri mDataUri;
 
     @Override
-    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+    public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.view_key_share_fragment, container, false);
+        View root = super.onCreateView(inflater, superContainer, savedInstanceState);
+        View view = inflater.inflate(R.layout.view_key_share_fragment, getContainer());
 
         mProviderHelper = new ProviderHelper(ViewKeyShareFragment.this.getActivity());
 
-        mContainer = (LinearLayout) view.findViewById(R.id.container);
         mFingerprint = (TextView) view.findViewById(R.id.view_key_fingerprint);
         mFingerprintQrCode = (ImageView) view.findViewById(R.id.view_key_fingerprint_qr_code_image);
         mFingerprintShareButton = view.findViewById(R.id.view_key_action_fingerprint_share);
@@ -142,7 +141,7 @@ public class ViewKeyShareFragment extends Fragment implements
             }
         });
 
-        return view;
+        return root;
     }
 
     private void share(Uri dataUri, ProviderHelper providerHelper, boolean fingerprintOnly,
@@ -232,9 +231,6 @@ public class ViewKeyShareFragment extends Fragment implements
     }
 
     private void loadData(Uri dataUri) {
-        getActivity().setProgressBarIndeterminateVisibility(true);
-        mContainer.setVisibility(View.GONE);
-
         mDataUri = dataUri;
 
         Log.i(Constants.TAG, "mDataUri: " + mDataUri.toString());
@@ -260,6 +256,7 @@ public class ViewKeyShareFragment extends Fragment implements
     static final int INDEX_UNIFIED_EXPIRY = 8;
 
     public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        setContentShown(false);
         switch (id) {
             case LOADER_ID_UNIFIED: {
                 Uri baseUri = KeyRings.buildUnifiedKeyRingUri(mDataUri);
@@ -299,8 +296,7 @@ public class ViewKeyShareFragment extends Fragment implements
             }
 
         }
-        getActivity().setProgressBarIndeterminateVisibility(false);
+        setContentShown(true);
-        mContainer.setVisibility(View.VISIBLE);
     }
 
     /**

OpenKeychain/src/main/res/layout/view_key_keys_fragment.xml

@@ -11,8 +11,7 @@
         android:descendantFocusability="beforeDescendants"
         android:orientation="vertical"
         android:paddingLeft="16dp"
-        android:paddingRight="16dp"
+        android:paddingRight="16dp">
-        android:id="@+id/container">
 
         <TextView
             style="@style/SectionHeader"

OpenKeychain/src/main/res/layout/view_key_main_fragment.xml

@@ -1,5 +1,4 @@
 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:bootstrapbutton="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
@@ -12,9 +11,7 @@
         android:descendantFocusability="beforeDescendants"
         android:orientation="vertical"
         android:paddingLeft="16dp"
-        android:paddingRight="16dp"
+        android:paddingRight="16dp">
-        android:id="@+id/container"
-        android:visibility="visible">
 
         <TextView
             style="@style/SectionHeader"

OpenKeychain/src/main/res/layout/view_key_share_fragment.xml

@@ -1,5 +1,4 @@
 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:bootstrapbutton="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
@@ -12,8 +11,7 @@
         android:descendantFocusability="beforeDescendants"
         android:orientation="vertical"
         android:paddingLeft="16dp"
-        android:paddingRight="16dp"
+        android:paddingRight="16dp">
-        android:id="@+id/container">
 
         <TextView
             style="@style/SectionHeader"