add expand item to linked id list

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

@@ -37,6 +37,7 @@ import android.view.ViewGroup;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ListView;
+import android.widget.TextView;
 
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
@@ -70,6 +71,7 @@ public class ViewKeyFragment extends LoaderFragment implements
     private ListView mLinkedIds;
     private CardView mLinkedIdsCard;
     private byte[] mFingerprint;
+    private TextView mLinkedIdsExpander;
 
     /**
      * Creates new instance of this fragment
@@ -113,6 +115,8 @@ public class ViewKeyFragment extends LoaderFragment implements
 
         mLinkedIds = (ListView) view.findViewById(R.id.view_key_linked_ids);
 
+        mLinkedIdsExpander = (TextView) view.findViewById(R.id.view_key_linked_ids_expander);
+
         mUserIds.setOnItemClickListener(new AdapterView.OnItemClickListener() {
             @Override
             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
@@ -198,7 +202,8 @@ public class ViewKeyFragment extends LoaderFragment implements
         mUserIds.setAdapter(mUserIdsAdapter);
         getLoaderManager().initLoader(LOADER_ID_USER_IDS, null, this);
 
-        mLinkedIdsAdapter = new LinkedIdsAdapter(getActivity(), null, 0, !mIsSecret);
+        mLinkedIdsAdapter = new LinkedIdsAdapter(getActivity(), null, 0,
+                !mIsSecret, mLinkedIdsExpander);
         mLinkedIds.setAdapter(mLinkedIdsAdapter);
         getLoaderManager().initLoader(LOADER_ID_LINKED_IDS, null, this);
 

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

@@ -26,6 +26,7 @@ import android.support.v4.content.CursorLoader;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
+import android.view.View.OnClickListener;
 import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.TextView;
@@ -50,19 +51,36 @@ public class LinkedIdsAdapter extends UserAttributesAdapter {
     protected LayoutInflater mInflater;
     WeakHashMap<Integer,RawLinkedIdentity> mLinkedIdentityCache = new WeakHashMap<>();
 
-    public LinkedIdsAdapter(Context context, Cursor c, int flags, boolean showCertification) {
+    private Cursor mUnfilteredCursor;
+
+    private TextView mExpander;
+
+    public LinkedIdsAdapter(Context context, Cursor c, int flags,
+            boolean showCertification, TextView expander) {
         super(context, c, flags);
         mInflater = LayoutInflater.from(context);
         mShowCertification = showCertification;
+
+        if (expander != null) {
+            mExpander = expander;
+            mExpander.setVisibility(View.GONE);
+            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;
-        Cursor filteredCursor = new FilterCursorWrapper(cursor) {
+        FilterCursorWrapper filteredCursor = new FilterCursorWrapper(cursor) {
             @Override
             public boolean isVisible(Cursor cursor) {
                 RawLinkedIdentity id = getItemAtPosition(cursor);
@@ -70,9 +88,25 @@ 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) {
 

OpenKeychain/src/main/res/drawable/divider.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle" >
+
+    <size
+        android:height="1px"
+        android:width="1000dp" />
+
+    <solid android:color="@color/bg_gray" />
+
+</shape>

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

@@ -55,7 +55,8 @@
             <LinearLayout
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:orientation="vertical">
+                android:orientation="vertical"
+                android:animateLayoutChanges="true">
 
                 <TextView
                     style="@style/CardViewHeader"
@@ -68,6 +69,25 @@
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
                     android:layout_marginBottom="4dp" />
+
+                <TextView
+                    android:id="@+id/view_key_linked_ids_expander"
+                    android:layout_width="fill_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="4dp"
+                    android:layout_marginBottom="4dp"
+                    android:gravity="center_vertical"
+                    android:drawableTop="@drawable/divider"
+                    android:drawableRight="@drawable/ic_expand_more_black_24dp"
+                    android:drawableEnd="@drawable/ic_expand_more_black_24dp"
+                    android:drawablePadding="3dp"
+                    android:clickable="true"
+                    android:textColor="@color/tertiary_text_light"
+                    android:text="%d more unknown identity types"
+                    android:paddingLeft="8dp"
+                    android:paddingRight="8dp"
+                    style="@style/SelectableItem" />
+
             </LinearLayout>
         </android.support.v7.widget.CardView>
 

OpenKeychain/src/main/res/values/strings.xml

@@ -1310,5 +1310,9 @@
     <string name="linked_need_verify">The resource needs to be verified before you can proceed!</string>
     <string name="menu_linked_add_identity">"Add Linked Identity"</string>
     <string name="section_linked_identities">Linked Identities</string>
+    <plurals name="linked_id_expand">
+        <item quantity="one">"There is one more unknown identity type"</item>
+        <item quantity="other">"There are %d more unknown identity types"</item>
+    </plurals>
 
 </resources>