Filter on junk contacts

app/src/main/java/eu/faircode/email/AdapterContact.java

@@ -77,6 +77,8 @@ public class AdapterContact extends RecyclerView.Adapter<AdapterContact.ViewHold
     private int textColorSecondary;
 
     private String search = null;
+    private List<Integer> types = new ArrayList<>();
+
     private List<TupleContactEx> all = new ArrayList<>();
     private List<TupleContactEx> selected = new ArrayList<>();
 
@@ -369,17 +371,28 @@ public class AdapterContact extends RecyclerView.Adapter<AdapterContact.ViewHold
     }
 
     public void set(@NonNull List<TupleContactEx> contacts) {
-        Log.i("Set contacts=" + contacts.size() + " search=" + search);
+        Log.i("Set contacts=" + contacts.size() +
+                " search=" + search + " types=" + types.size());
 
         all = contacts;
 
+        List<TupleContactEx> filtered;
+        if (types.size() == 0)
+            filtered = all;
+        else {
+            filtered = new ArrayList<>();
+            for (TupleContactEx contact : all)
+                if (types.contains(contact.type))
+                    filtered.add(contact);
+        }
+
         List<TupleContactEx> items;
         if (TextUtils.isEmpty(search))
-            items = all;
+            items = filtered;
         else {
             items = new ArrayList<>();
             String query = search.toLowerCase().trim();
-            for (TupleContactEx contact : contacts)
+            for (TupleContactEx contact : filtered)
                 if (contact.email.toLowerCase().contains(query) ||
                         (contact.name != null && contact.name.toLowerCase().contains(query)))
                     items.add(contact);
@@ -419,6 +432,11 @@ public class AdapterContact extends RecyclerView.Adapter<AdapterContact.ViewHold
         set(all);
     }
 
+    public void filter(List<Integer> types) {
+        this.types = types;
+        set(all);
+    }
+
     private static class DiffCallback extends DiffUtil.Callback {
         private List<TupleContactEx> prev = new ArrayList<>();
         private List<TupleContactEx> next = new ArrayList<>();

app/src/main/java/eu/faircode/email/FragmentContacts.java

@@ -44,6 +44,7 @@ import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
 public class FragmentContacts extends FragmentBase {
@@ -51,6 +52,7 @@ public class FragmentContacts extends FragmentBase {
     private ContentLoadingProgressBar pbWait;
     private Group grpReady;
 
+    private boolean junk = BuildConfig.DEBUG;
     private String searching = null;
     private AdapterContact adapter;
 
@@ -85,6 +87,7 @@ public class FragmentContacts extends FragmentBase {
 
     @Override
     public void onSaveInstanceState(Bundle outState) {
+        outState.putBoolean("fair:junk", junk);
         outState.putString("fair:searching", searching);
         super.onSaveInstanceState(outState);
     }
@@ -93,8 +96,11 @@ public class FragmentContacts extends FragmentBase {
     public void onActivityCreated(@Nullable Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
 
-        if (savedInstanceState != null)
+        if (savedInstanceState != null) {
+            junk = savedInstanceState.getBoolean("fair:junk");
             searching = savedInstanceState.getString("fair:searching");
+        }
+        onMenuJunk(junk);
         adapter.search(searching);
 
         DB db = DB.getInstance(getContext());
@@ -148,6 +154,12 @@ public class FragmentContacts extends FragmentBase {
         super.onCreateOptionsMenu(menu, inflater);
     }
 
+    @Override
+    public void onPrepareOptionsMenu(@NonNull Menu menu) {
+        super.onPrepareOptionsMenu(menu);
+        menu.findItem(R.id.menu_junk).setChecked(junk);
+    }
+
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         int itemId = item.getItemId();
@@ -157,6 +169,10 @@ public class FragmentContacts extends FragmentBase {
         } else if (itemId == R.id.menu_delete) {
             new FragmentDelete().show(getParentFragmentManager(), "contacts:delete");
             return true;
+        } else if (itemId == R.id.menu_junk) {
+            item.setChecked(!item.isChecked());
+            onMenuJunk(item.isChecked());
+            return true;
         }
         return super.onOptionsItemSelected(item);
     }
@@ -165,6 +181,13 @@ public class FragmentContacts extends FragmentBase {
         Helper.viewFAQ(getContext(), 84);
     }
 
+    private void onMenuJunk(boolean junk) {
+        this.junk = junk;
+        adapter.filter(junk
+                ? Arrays.asList(EntityContact.TYPE_JUNK, EntityContact.TYPE_NO_JUNK)
+                : new ArrayList<>());
+    }
+
     public static class FragmentDelete extends FragmentDialogBase {
         @NonNull
         @Override

app/src/main/res/menu/menu_contacts.xml

@@ -19,4 +19,10 @@
         android:icon="@drawable/twotone_delete_24"
         android:title="@string/title_delete"
         app:showAsAction="ifRoom" />
+
+    <item
+        android:id="@+id/menu_junk"
+        android:checkable="true"
+        android:icon="@drawable/twotone_report_24"
+        android:title="@string/title_spam" />
 </menu>