use mvp pattern for linked id card

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

@@ -84,7 +84,6 @@ import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
 import org.sufficientlysecure.keychain.service.ChangeUnlockParcel;
 import org.sufficientlysecure.keychain.service.ImportKeyringParcel;
 import org.sufficientlysecure.keychain.service.input.RequiredInputParcel;
-import org.sufficientlysecure.keychain.ui.ViewKeyFragment.PostponeType;
 import org.sufficientlysecure.keychain.ui.base.BaseSecurityTokenActivity;
 import org.sufficientlysecure.keychain.ui.base.CryptoOperationHelper;
 import org.sufficientlysecure.keychain.ui.dialog.SetPassphraseDialogFragment;
@@ -111,7 +110,6 @@ public class ViewKeyActivity extends BaseSecurityTokenActivity implements
     public static final String EXTRA_SECURITY_TOKEN_AID = "security_token_aid";
     public static final String EXTRA_SECURITY_TOKEN_VERSION = "security_token_version";
     public static final String EXTRA_SECURITY_TOKEN_FINGERPRINTS = "security_token_fingerprints";
-    private boolean mLinkedTransition;
 
     @Retention(RetentionPolicy.SOURCE)
     @IntDef({REQUEST_QR_FINGERPRINT, REQUEST_BACKUP, REQUEST_CERTIFY, REQUEST_DELETE})
@@ -332,11 +330,6 @@ public class ViewKeyActivity extends BaseSecurityTokenActivity implements
             return;
         }
 
-        mLinkedTransition = getIntent().getBooleanExtra(EXTRA_LINKED_TRANSITION, false);
-        if (mLinkedTransition && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-            postponeEnterTransition();
-        }
-
         if (Preferences.getPreferences(this).getExperimentalEnableKeybase()) {
             FragmentManager manager = getSupportFragmentManager();
             final ViewKeyKeybaseFragment keybaseFrag = ViewKeyKeybaseFragment.newInstance(mDataUri);
@@ -742,8 +735,7 @@ public class ViewKeyActivity extends BaseSecurityTokenActivity implements
                 }
 
                 // if the main fragment doesn't exist, or is not of the correct type, (re)create it
-                frag = ViewKeyFragment.newInstance(mMasterKeyId, mIsSecret,
+                frag = ViewKeyFragment.newInstance(mMasterKeyId, mIsSecret);
-                        mLinkedTransition ? PostponeType.LINKED : PostponeType.NONE);
                 // get rid of possible backstack, this fragment is always at the bottom
                 manager.popBackStack("security_token", FragmentManager.POP_BACK_STACK_INCLUSIVE);
                 manager.beginTransaction()

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

@@ -19,67 +19,49 @@
 package org.sufficientlysecure.keychain.ui;
 
 
-import java.io.IOException;
-
-import android.annotation.TargetApi;
 import android.content.Intent;
 import android.database.Cursor;
 import android.net.Uri;
-import android.os.Build;
-import android.os.Build.VERSION_CODES;
 import android.os.Bundle;
 import android.os.Handler;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentTransaction;
 import android.support.v4.app.LoaderManager;
 import android.support.v4.content.Loader;
-import android.support.v7.widget.CardView;
-import android.transition.Fade;
-import android.transition.Transition;
-import android.transition.TransitionInflater;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.view.ViewTreeObserver.OnPreDrawListener;
 import android.widget.AdapterView;
-import android.widget.AdapterView.OnItemClickListener;
 import android.widget.Button;
 import android.widget.LinearLayout;
 import android.widget.ListView;
-import android.widget.TextView;
 
-import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.compatibility.DialogFragmentWorkaround;
 import org.sufficientlysecure.keychain.operations.results.OperationResult;
 import org.sufficientlysecure.keychain.provider.KeychainContract;
 import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
-import org.sufficientlysecure.keychain.ui.adapter.LinkedIdsAdapter;
 import org.sufficientlysecure.keychain.ui.adapter.UserIdsAdapter;
 import org.sufficientlysecure.keychain.ui.base.LoaderFragment;
 import org.sufficientlysecure.keychain.ui.dialog.UserIdInfoDialogFragment;
-import org.sufficientlysecure.keychain.ui.linked.LinkedIdViewFragment;
-import org.sufficientlysecure.keychain.ui.linked.LinkedIdViewFragment.OnIdentityLoadedListener;
-import org.sufficientlysecure.keychain.ui.linked.LinkedIdWizard;
 import org.sufficientlysecure.keychain.ui.widget.KeyHealthCardView;
 import org.sufficientlysecure.keychain.ui.widget.KeyHealthPresenter;
+import org.sufficientlysecure.keychain.ui.widget.LinkedIdentitiesCardView;
+import org.sufficientlysecure.keychain.ui.widget.LinkedIdentitiesPresenter;
+import org.sufficientlysecure.keychain.ui.widget.LinkedIdentitiesPresenter.LinkedIdsFragMvpView;
 import org.sufficientlysecure.keychain.ui.widget.SystemContactCardView;
 import org.sufficientlysecure.keychain.ui.widget.SystemContactPresenter;
-import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.util.Preferences;
 
 
-public class ViewKeyFragment extends LoaderFragment implements
+public class ViewKeyFragment extends LoaderFragment implements LoaderManager.LoaderCallbacks<Cursor>,
-        LoaderManager.LoaderCallbacks<Cursor> {
+        LinkedIdsFragMvpView {
 
     public static final String ARG_MASTER_KEY_ID = "master_key_id";
     public static final String ARG_IS_SECRET = "is_secret";
-    public static final String ARG_POSTPONE_TYPE = "postpone_type";
 
     private ListView mUserIds;
 
-    enum PostponeType {
-        NONE, LINKED
-    }
-
     boolean mIsSecret = false;
 
     private static final int LOADER_ID_USER_IDS = 1;
@@ -88,16 +70,11 @@ public class ViewKeyFragment extends LoaderFragment implements
     private static final int LOADER_ID_SUBKEY_STATUS = 4;
 
     private UserIdsAdapter mUserIdsAdapter;
-    private LinkedIdsAdapter mLinkedIdsAdapter;
 
     private Uri mDataUri;
 
-    private PostponeType mPostponeType;
+    LinkedIdentitiesCardView mLinkedIdsCard;
-
+    LinkedIdentitiesPresenter mLinkedIdentitiesPresenter;
-    private ListView mLinkedIds;
-    private CardView mLinkedIdsCard;
-    private TextView mLinkedIdsEmpty;
-    private TextView mLinkedIdsExpander;
 
     SystemContactCardView mSystemContactCard;
     SystemContactPresenter mSystemContactPresenter;
@@ -110,12 +87,11 @@ public class ViewKeyFragment extends LoaderFragment implements
     /**
      * Creates new instance of this fragment
      */
-    public static ViewKeyFragment newInstance(long masterKeyId, boolean isSecret, PostponeType postponeType) {
+    public static ViewKeyFragment newInstance(long masterKeyId, boolean isSecret) {
         ViewKeyFragment frag = new ViewKeyFragment();
         Bundle args = new Bundle();
         args.putLong(ARG_MASTER_KEY_ID, masterKeyId);
         args.putBoolean(ARG_IS_SECRET, isSecret);
-        args.putString(ARG_POSTPONE_TYPE, postponeType.toString());
 
         frag.setArguments(args);
 
@@ -129,11 +105,7 @@ public class ViewKeyFragment extends LoaderFragment implements
 
         mUserIds = (ListView) view.findViewById(R.id.view_key_user_ids);
         Button userIdsEditButton = (Button) view.findViewById(R.id.view_key_card_user_ids_edit);
-        mLinkedIdsCard = (CardView) view.findViewById(R.id.card_linked_ids);
+        mLinkedIdsCard = (LinkedIdentitiesCardView) view.findViewById(R.id.card_linked_ids);
-        mLinkedIds = (ListView) view.findViewById(R.id.view_key_linked_ids);
-        mLinkedIdsExpander = (TextView) view.findViewById(R.id.view_key_linked_ids_expander);
-        mLinkedIdsEmpty = (TextView)  view.findViewById(R.id.view_key_linked_ids_empty);
-        Button linkedIdsAddButton = (Button) view.findViewById(R.id.view_key_card_linked_ids_add);
 
         userIdsEditButton.setOnClickListener(new View.OnClickListener() {
             @Override
@@ -142,25 +114,12 @@ public class ViewKeyFragment extends LoaderFragment implements
             }
         });
 
-        linkedIdsAddButton.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                addLinkedIdentity(mDataUri);
-            }
-        });
-
         mUserIds.setOnItemClickListener(new AdapterView.OnItemClickListener() {
             @Override
             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                 showUserIdInfo(position);
             }
         });
-        mLinkedIds.setOnItemClickListener(new OnItemClickListener() {
-            @Override
-            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
-                showLinkedId(position);
-            }
-        });
 
         mSystemContactCard = (SystemContactCardView) view.findViewById(R.id.linked_system_contact_card);
         mKeyHealthCard = (KeyHealthCardView) view.findViewById(R.id.subkey_status_card);
@@ -174,53 +133,6 @@ public class ViewKeyFragment extends LoaderFragment implements
         startActivityForResult(editIntent, 0);
     }
 
-    private void addLinkedIdentity(Uri dataUri) {
-        Intent intent = new Intent(getActivity(), LinkedIdWizard.class);
-        intent.setData(dataUri);
-        startActivity(intent);
-        getActivity().finish();
-    }
-
-    private void showLinkedId(final int position) {
-        final LinkedIdViewFragment frag;
-        try {
-            frag = mLinkedIdsAdapter.getLinkedIdFragment(mDataUri, position, mMasterKeyId);
-        } catch (IOException e) {
-            Log.e(Constants.TAG, "IOException", e);
-            return;
-        }
-
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-            Transition trans = TransitionInflater.from(getActivity())
-                    .inflateTransition(R.transition.linked_id_card_trans);
-            // setSharedElementReturnTransition(trans);
-            setExitTransition(new Fade());
-            frag.setSharedElementEnterTransition(trans);
-        }
-
-        getFragmentManager().beginTransaction()
-                .add(R.id.view_key_fragment, frag)
-                .hide(frag)
-                .commit();
-
-        frag.setOnIdentityLoadedListener(new OnIdentityLoadedListener() {
-            @Override
-            public void onIdentityLoaded() {
-                new Handler().post(new Runnable() {
-                    @Override
-                    public void run() {
-                        getFragmentManager().beginTransaction()
-                                .show(frag)
-                                .addSharedElement(mLinkedIdsCard, "card_linked_ids")
-                                .remove(ViewKeyFragment.this)
-                                .addToBackStack("linked_id")
-                                .commit();
-                    }
-                });
-            }
-        });
-    }
-
     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
@@ -228,7 +140,6 @@ public class ViewKeyFragment extends LoaderFragment implements
         mMasterKeyId = getArguments().getLong(ARG_MASTER_KEY_ID);
         mDataUri = KeyRings.buildGenericKeyRingUri(mMasterKeyId);
         mIsSecret = getArguments().getBoolean(ARG_IS_SECRET);
-        mPostponeType = PostponeType.valueOf(getArguments().getString(ARG_POSTPONE_TYPE));
 
         // load user ids after we know if it's a secret key
         mUserIdsAdapter = new UserIdsAdapter(getActivity(), null, 0, !mIsSecret, null);
@@ -236,9 +147,14 @@ public class ViewKeyFragment extends LoaderFragment implements
 
         // initialize loaders, which will take care of auto-refresh on change
         getLoaderManager().initLoader(LOADER_ID_USER_IDS, null, this);
-        initLinkedIds(mIsSecret);
         initCardButtonsVisibility(mIsSecret);
 
+        if (Preferences.getPreferences(getActivity()).getExperimentalEnableLinkedIdentities()) {
+            mLinkedIdentitiesPresenter = new LinkedIdentitiesPresenter(
+                    getContext(), mLinkedIdsCard, this, LOADER_ID_LINKED_IDS, mMasterKeyId, mIsSecret);
+            mLinkedIdentitiesPresenter.startLoader(getLoaderManager());
+        }
+
         mSystemContactPresenter = new SystemContactPresenter(
                 getContext(), mSystemContactCard, LOADER_ID_LINKED_CONTACT, mMasterKeyId, mIsSecret);
         mSystemContactPresenter.startLoader(getLoaderManager());
@@ -248,6 +164,20 @@ public class ViewKeyFragment extends LoaderFragment implements
         mKeyHealthPresenter.startLoader(getLoaderManager());
     }
 
+    @Override
+    public void switchToFragment(final Fragment frag, final String backStackName) {
+        new Handler().post(new Runnable() {
+            @Override
+            public void run() {
+                getFragmentManager().beginTransaction()
+                        .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
+                        .replace(R.id.view_key_fragment, frag)
+                        .addToBackStack(backStackName)
+                        .commit();
+            }
+        });
+    }
+
     private void showUserIdInfo(final int position) {
         if (!mIsSecret) {
             final boolean isRevoked = mUserIdsAdapter.getIsRevoked(position);
@@ -283,10 +213,7 @@ public class ViewKeyFragment extends LoaderFragment implements
                 return UserIdsAdapter.createLoader(getActivity(), mDataUri);
             }
 
-            case LOADER_ID_LINKED_IDS: {
+            case LOADER_ID_LINKED_IDS:
-                return LinkedIdsAdapter.createLoader(getActivity(), mDataUri);
-            }
-
             case LOADER_ID_LINKED_CONTACT:
             case LOADER_ID_SUBKEY_STATUS: {
                 throw new IllegalStateException("This callback should never end up here!");
@@ -315,31 +242,7 @@ public class ViewKeyFragment extends LoaderFragment implements
                 break;
             }
 
-            case LOADER_ID_LINKED_IDS: {
+            case LOADER_ID_LINKED_IDS:
-                mLinkedIdsAdapter.swapCursor(data);
-
-                if (mIsSecret) {
-                    mLinkedIdsCard.setVisibility(View.VISIBLE);
-                    mLinkedIdsEmpty.setVisibility(mLinkedIdsAdapter.getCount() > 0 ? View.GONE : View.VISIBLE);
-                } else {
-                    mLinkedIdsCard.setVisibility(mLinkedIdsAdapter.getCount() > 0 ? View.VISIBLE : View.GONE);
-                    mLinkedIdsEmpty.setVisibility(View.GONE);
-                }
-
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && mPostponeType == PostponeType.LINKED) {
-                    mLinkedIdsCard.getViewTreeObserver().addOnPreDrawListener(new OnPreDrawListener() {
-                        @TargetApi(VERSION_CODES.LOLLIPOP)
-                        @Override
-                        public boolean onPreDraw() {
-                            mLinkedIdsCard.getViewTreeObserver().removeOnPreDrawListener(this);
-                            getActivity().startPostponedEnterTransition();
-                            return true;
-                        }
-                    });
-                }
-                break;
-            }
-
             case LOADER_ID_LINKED_CONTACT:
             case LOADER_ID_SUBKEY_STATUS: {
                 throw new IllegalStateException("This callback should never end up here!");
@@ -347,16 +250,6 @@ public class ViewKeyFragment extends LoaderFragment implements
         }
     }
 
-    private void initLinkedIds(boolean isSecret) {
-        if (!Preferences.getPreferences(getActivity()).getExperimentalEnableLinkedIdentities()) {
-            return;
-        }
-
-        mLinkedIdsAdapter = new LinkedIdsAdapter(getActivity(), null, 0, isSecret, mLinkedIdsExpander);
-        mLinkedIds.setAdapter(mLinkedIdsAdapter);
-        getLoaderManager().initLoader(LOADER_ID_LINKED_IDS, null, this);
-    }
-
     private void initCardButtonsVisibility(boolean isSecret) {
         LinearLayout buttonsUserIdsLayout =
                 (LinearLayout) getActivity().findViewById(R.id.view_key_card_user_ids_buttons);
@@ -382,10 +275,6 @@ public class ViewKeyFragment extends LoaderFragment implements
                 mUserIdsAdapter.swapCursor(null);
                 break;
             }
-            case LOADER_ID_LINKED_IDS: {
-                mLinkedIdsAdapter.swapCursor(null);
-                break;
-            }
         }
     }
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/LinkedIdsAdapter.java

@@ -18,8 +18,11 @@
 
 package org.sufficientlysecure.keychain.ui.adapter;
 
+
+import java.io.IOException;
+import java.util.WeakHashMap;
+
 import android.animation.ObjectAnimator;
-import android.app.Activity;
 import android.content.Context;
 import android.database.Cursor;
 import android.net.Uri;
@@ -37,6 +40,7 @@ import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.linked.LinkedAttribute;
 import org.sufficientlysecure.keychain.linked.UriAttribute;
 import org.sufficientlysecure.keychain.provider.KeychainContract.Certs;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
 import org.sufficientlysecure.keychain.provider.KeychainContract.UserPackets;
 import org.sufficientlysecure.keychain.ui.linked.LinkedIdViewFragment;
 import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
@@ -45,45 +49,22 @@ import org.sufficientlysecure.keychain.ui.util.SubtleAttentionSeeker;
 import org.sufficientlysecure.keychain.util.FilterCursorWrapper;
 import org.sufficientlysecure.keychain.util.Log;
 
-import java.io.IOException;
-import java.util.WeakHashMap;
-
 public class LinkedIdsAdapter extends UserAttributesAdapter {
     private final boolean mIsSecret;
     protected LayoutInflater mInflater;
     WeakHashMap<Integer,UriAttribute> mLinkedIdentityCache = new WeakHashMap<>();
 
-    private Cursor mUnfilteredCursor;
+    public LinkedIdsAdapter(Context context, Cursor c, int flags, boolean isSecret) {
-
-    private TextView mExpander;
-
-    public LinkedIdsAdapter(Context context, Cursor c, int flags,
-            boolean isSecret, TextView expander) {
         super(context, c, flags);
         mInflater = LayoutInflater.from(context);
         mIsSecret = isSecret;
-
-        if (expander != null) {
-            expander.setVisibility(View.GONE);
-            /* don't show an expander (maybe in some sort of advanced view?)
-            mExpander = expander;
-            mExpander.setOnClickListener(new OnClickListener() {
-                @Override
-                public void onClick(View v) {
-                    showUnfiltered();
-                }
-            });
-            */
-        }
     }
 
     @Override
     public Cursor swapCursor(Cursor cursor) {
         if (cursor == null) {
-            mUnfilteredCursor = null;
             return super.swapCursor(null);
         }
-        mUnfilteredCursor = cursor;
         FilterCursorWrapper filteredCursor = new FilterCursorWrapper(cursor) {
             @Override
             public boolean isVisible(Cursor cursor) {
@@ -92,25 +73,9 @@ public class LinkedIdsAdapter extends UserAttributesAdapter {
             }
         };
 
-        if (mExpander != null) {
-            int hidden = filteredCursor.getHiddenCount();
-            if (hidden == 0) {
-                mExpander.setVisibility(View.GONE);
-            } else {
-                mExpander.setVisibility(View.VISIBLE);
-                mExpander.setText(mContext.getResources().getQuantityString(
-                        R.plurals.linked_id_expand, hidden));
-            }
-        }
-
         return super.swapCursor(filteredCursor);
     }
 
-    private void showUnfiltered() {
-        mExpander.setVisibility(View.GONE);
-        super.swapCursor(mUnfilteredCursor);
-    }
-
     @Override
     public void bindView(View view, Context context, Cursor cursor) {
 
@@ -183,18 +148,18 @@ public class LinkedIdsAdapter extends UserAttributesAdapter {
     // don't show revoked user ids, irrelevant for average users
     public static final String LINKED_IDS_WHERE = UserPackets.IS_REVOKED + " = 0";
 
-    public static CursorLoader createLoader(Activity activity, Uri dataUri) {
+    public static CursorLoader createLoader(Context context, Uri dataUri) {
         Uri baseUri = UserPackets.buildLinkedIdsUri(dataUri);
-        return new CursorLoader(activity, baseUri,
+        return new CursorLoader(context, baseUri,
                 UserIdsAdapter.USER_PACKETS_PROJECTION, LINKED_IDS_WHERE, null, null);
     }
 
-    public LinkedIdViewFragment getLinkedIdFragment(Uri baseUri, int position, long masterKeyId) throws IOException {
+    public LinkedIdViewFragment getLinkedIdFragment(int position, long masterKeyId) throws IOException {
         Cursor c = getCursor();
         c.moveToPosition(position);
         int rank = c.getInt(UserIdsAdapter.INDEX_RANK);
 
-        Uri dataUri = UserPackets.buildLinkedIdsUri(baseUri);
+        Uri dataUri = UserPackets.buildLinkedIdsUri(KeyRings.buildGenericKeyRingUri(masterKeyId));
         return LinkedIdViewFragment.newInstance(dataUri, rank, mIsSecret, masterKeyId);
     }
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdViewFragment.java

@@ -96,7 +96,6 @@ public class LinkedIdViewFragment extends CryptoOperationFragment implements
     private Uri mDataUri;
     private ViewHolder mViewHolder;
     private int mLidRank;
-    private OnIdentityLoadedListener mIdLoadedListener;
     private long mCertifyKeyId;
 
     public static LinkedIdViewFragment newInstance(Uri dataUri, int rank,
@@ -156,11 +155,6 @@ public class LinkedIdViewFragment extends CryptoOperationFragment implements
 
                 // Nothing to load means break if we are *expected* to load
                 if (!cursor.moveToFirst()) {
-                    if (mIdLoadedListener != null) {
-                        Notify.create(getActivity(), "Error loading identity!",
-                                Notify.LENGTH_LONG, Style.ERROR).show();
-                        finishFragment();
-                    }
                     // Or just ignore, this is probably some intermediate state during certify
                     break;
                 }
@@ -173,11 +167,6 @@ public class LinkedIdViewFragment extends CryptoOperationFragment implements
 
                     loadIdentity(linkedId, certStatus);
 
-                    if (mIdLoadedListener != null) {
-                        mIdLoadedListener.onIdentityLoaded();
-                        mIdLoadedListener = null;
-                    }
-
                 } catch (IOException e) {
                     Log.e(Constants.TAG, "error parsing identity", e);
                     Notify.create(getActivity(), "Error parsing identity!",
@@ -200,14 +189,6 @@ public class LinkedIdViewFragment extends CryptoOperationFragment implements
         });
     }
 
-    public interface OnIdentityLoadedListener {
-        void onIdentityLoaded();
-    }
-
-    public void setOnIdentityLoadedListener(OnIdentityLoadedListener listener) {
-        mIdLoadedListener = listener;
-    }
-
     private void loadIdentity(UriAttribute linkedId, int certStatus) {
         mLinkedId = linkedId;
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/LinkedIdentitiesCardView.java

@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2017 Vincent Breitmoser <v.breitmoser@mugenguild.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.widget;
+
+
+import android.content.Context;
+import android.support.v7.widget.CardView;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.AdapterView.OnItemClickListener;
+import android.widget.Button;
+import android.widget.ListView;
+import android.widget.TextView;
+
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.ui.adapter.LinkedIdsAdapter;
+import org.sufficientlysecure.keychain.ui.widget.LinkedIdentitiesPresenter.LinkedIdsClickListener;
+import org.sufficientlysecure.keychain.ui.widget.LinkedIdentitiesPresenter.LinkedIdsMvpView;
+
+
+public class LinkedIdentitiesCardView extends CardView implements LinkedIdsMvpView {
+    private ListView vLinkedIds;
+    private TextView vLinkedIdsEmpty;
+
+    private LinkedIdsClickListener linkedIdsClickListener;
+
+    public LinkedIdentitiesCardView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+
+        View view = LayoutInflater.from(context).inflate(R.layout.linked_identities_card, this, true);
+
+        vLinkedIds = (ListView) view.findViewById(R.id.view_key_linked_ids);
+        vLinkedIdsEmpty = (TextView)  view.findViewById(R.id.view_key_linked_ids_empty);
+        Button linkedIdsAddButton = (Button) view.findViewById(R.id.view_key_card_linked_ids_add);
+
+        linkedIdsAddButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (linkedIdsClickListener != null) {
+                    linkedIdsClickListener.onClickAddIdentity();
+                }
+            }
+        });
+
+        vLinkedIds.setOnItemClickListener(new OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+                if (linkedIdsClickListener != null) {
+                    linkedIdsClickListener.onLinkedIdItemClick(position);
+                }
+            }
+        });
+    }
+
+    @Override
+    public void setSystemContactClickListener(LinkedIdsClickListener linkedIdsClickListener) {
+        this.linkedIdsClickListener = linkedIdsClickListener;
+    }
+
+    @Override
+    public void setLinkedIdsAdapter(LinkedIdsAdapter linkedIdsAdapter) {
+        vLinkedIds.setAdapter(linkedIdsAdapter);
+    }
+
+    @Override
+    public void showCard(boolean visible) {
+        setVisibility(visible ? View.VISIBLE : View.GONE);
+    }
+
+    @Override
+    public void showEmptyView(boolean visible) {
+        vLinkedIdsEmpty.setVisibility(visible ? View.VISIBLE : View.GONE);
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/LinkedIdentitiesPresenter.java

@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2017 Vincent Breitmoser <v.breitmoser@mugenguild.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.widget;
+
+
+import java.io.IOException;
+
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.LoaderManager;
+import android.support.v4.app.LoaderManager.LoaderCallbacks;
+import android.support.v4.content.Loader;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
+import org.sufficientlysecure.keychain.ui.adapter.LinkedIdsAdapter;
+import org.sufficientlysecure.keychain.ui.linked.LinkedIdViewFragment;
+import org.sufficientlysecure.keychain.ui.linked.LinkedIdWizard;
+import org.sufficientlysecure.keychain.util.Log;
+
+
+public class LinkedIdentitiesPresenter implements LoaderCallbacks<Cursor> {
+    private final Context context;
+    private final LinkedIdsMvpView view;
+    private final int loaderId;
+    private final LinkedIdsFragMvpView fragView;
+
+    private LinkedIdsAdapter linkedIdsAdapter;
+
+    private final long masterKeyId;
+    private final boolean isSecret;
+
+    public LinkedIdentitiesPresenter(
+            Context context, LinkedIdsMvpView view, LinkedIdsFragMvpView fragView, int loaderId, long masterKeyId, boolean isSecret) {
+        this.context = context;
+        this.view = view;
+        this.fragView = fragView;
+        this.loaderId = loaderId;
+
+        this.masterKeyId = masterKeyId;
+        this.isSecret = isSecret;
+
+        linkedIdsAdapter = new LinkedIdsAdapter(context, null, 0, isSecret);
+        view.setLinkedIdsAdapter(linkedIdsAdapter);
+
+        view.setSystemContactClickListener(new LinkedIdsClickListener() {
+            @Override
+            public void onLinkedIdItemClick(int position) {
+                showLinkedId(position);
+            }
+
+            @Override
+            public void onClickAddIdentity() {
+                addLinkedIdentity();
+            }
+        });
+    }
+
+    public void startLoader(LoaderManager loaderManager) {
+        loaderManager.restartLoader(loaderId, null, this);
+    }
+
+    @Override
+    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        return LinkedIdsAdapter.createLoader(context, KeyRings.buildUnifiedKeyRingUri(masterKeyId));
+    }
+
+    @Override
+    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
+        linkedIdsAdapter.swapCursor(data);
+
+        boolean hasLinkedIdentities = linkedIdsAdapter.getCount() > 0;
+        if (isSecret) {
+            view.showCard(true);
+            view.showEmptyView(!hasLinkedIdentities);
+        } else {
+            view.showCard(hasLinkedIdentities);
+            view.showEmptyView(false);
+        }
+    }
+
+    @Override
+    public void onLoaderReset(Loader loader) {
+        linkedIdsAdapter.swapCursor(null);
+    }
+
+    private void showLinkedId(final int position) {
+        final LinkedIdViewFragment frag;
+        try {
+            frag = linkedIdsAdapter.getLinkedIdFragment(position, masterKeyId);
+        } catch (IOException e) {
+            Log.e(Constants.TAG, "IOException", e);
+            return;
+        }
+
+        fragView.switchToFragment(frag, "linked_id");
+    }
+
+    interface LinkedIdsMvpView {
+        void setSystemContactClickListener(LinkedIdsClickListener linkedIdsClickListener);
+        void setLinkedIdsAdapter(LinkedIdsAdapter linkedIdsAdapter);
+
+        void showCard(boolean visible);
+        void showEmptyView(boolean visible);
+    }
+
+    public interface LinkedIdsFragMvpView {
+        void switchToFragment(Fragment frag, String backStackName);
+    }
+
+    interface LinkedIdsClickListener {
+        void onLinkedIdItemClick(int position);
+        void onClickAddIdentity();
+    }
+
+    private void addLinkedIdentity() {
+        Intent intent = new Intent(context, LinkedIdWizard.class);
+        intent.setData(KeyRings.buildUnifiedKeyRingUri(masterKeyId));
+        context.startActivity(intent);
+    }
+}

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

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical">
+
+    <TextView
+        style="@style/CardViewHeader"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/section_linked_identities" />
+
+    <org.sufficientlysecure.keychain.ui.widget.FixedListView
+        android:id="@+id/view_key_linked_ids"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="4dp" />
+
+    <TextView
+        android:id="@+id/view_key_linked_ids_empty"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="16dp"
+        android:gravity="center"
+        android:text="@string/linked_empty" />
+
+    <LinearLayout
+        android:id="@+id/view_key_card_linked_ids_buttons"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="left|start"
+        android:orientation="vertical">
+
+        <View
+            android:layout_width="match_parent"
+            android:layout_height="1dip"
+            android:background="?android:attr/listDivider" />
+
+        <Button
+            android:id="@+id/view_key_card_linked_ids_add"
+            style="?android:attr/borderlessButtonStyle"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/menu_linked_add_identity"
+            android:textColor="@color/card_view_button" />
+
+    </LinearLayout>
+
+</LinearLayout>

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

@@ -22,88 +22,17 @@
         card_view:cardCornerRadius="4dp"
         />
 
-    <android.support.v7.widget.CardView
+    <org.sufficientlysecure.keychain.ui.widget.LinkedIdentitiesCardView
         android:id="@+id/card_linked_ids"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_gravity="center"
-        android:transitionName="card_linked_ids"
         android:visibility="gone"
         card_view:cardBackgroundColor="?attr/colorCardViewBackground"
         card_view:cardCornerRadius="4dp"
         card_view:cardElevation="2dp"
         card_view:cardUseCompatPadding="true"
-        tools:visibility="visible">
+        tools:visibility="visible" />
-
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:orientation="vertical">
-
-            <TextView
-                style="@style/CardViewHeader"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/section_linked_identities" />
-
-            <org.sufficientlysecure.keychain.ui.widget.FixedListView
-                android:id="@+id/view_key_linked_ids"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_marginBottom="4dp" />
-
-            <TextView
-                android:id="@+id/view_key_linked_ids_empty"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:padding="16dp"
-                android:gravity="center"
-                android:text="@string/linked_empty" />
-
-            <TextView
-                android:id="@+id/view_key_linked_ids_expander"
-                android:layout_width="fill_parent"
-                android:layout_height="wrap_content"
-                android:layout_marginBottom="4dp"
-                android:layout_marginTop="4dp"
-                android:background="?android:selectableItemBackground"
-                android:clickable="true"
-                android:drawableEnd="@drawable/ic_expand_more_black_24dp"
-                android:drawablePadding="3dp"
-                android:drawableRight="@drawable/ic_expand_more_black_24dp"
-                android:drawableTop="@drawable/divider"
-                android:gravity="center_vertical"
-                android:paddingLeft="8dp"
-                android:paddingRight="8dp"
-                android:text="@string/linked_ids_more_unknown"
-                android:visibility="gone"
-                tools:visibility="visible" />
-
-            <LinearLayout
-                android:id="@+id/view_key_card_linked_ids_buttons"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:gravity="left|start"
-                android:orientation="vertical">
-
-                <View
-                    android:layout_width="match_parent"
-                    android:layout_height="1dip"
-                    android:background="?android:attr/listDivider" />
-
-                <Button
-                    android:id="@+id/view_key_card_linked_ids_add"
-                    style="?android:attr/borderlessButtonStyle"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:text="@string/menu_linked_add_identity"
-                    android:textColor="@color/card_view_button" />
-
-            </LinearLayout>
-
-        </LinearLayout>
-
-    </android.support.v7.widget.CardView>
 
     <android.support.v7.widget.CardView
         android:id="@+id/view_key_card_user_ids"