Added local contacts display

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

@@ -0,0 +1,184 @@
+package eu.faircode.email;
+
+/*
+    This file is part of FairEmail.
+
+    FairEmail 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.
+
+    FairEmail 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 FairEmail.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2018-2019 by Marcel Bokhorst (M66B)
+*/
+
+import android.content.Context;
+import android.net.Uri;
+import android.text.format.DateUtils;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.DiffUtil;
+import androidx.recyclerview.widget.ListUpdateCallback;
+import androidx.recyclerview.widget.RecyclerView;
+
+public class AdapterContact extends RecyclerView.Adapter<AdapterContact.ViewHolder> {
+    private Context context;
+    private LayoutInflater inflater;
+
+    private List<EntityContact> all = new ArrayList<>();
+    private List<EntityContact> filtered = new ArrayList<>();
+
+    public class ViewHolder extends RecyclerView.ViewHolder {
+        private View itemView;
+        private ImageView ivType;
+        private ImageView ivAvatar;
+        private TextView tvName;
+        private TextView tvEmail;
+        private TextView tvTimes;
+        private TextView tvLast;
+
+        ViewHolder(View itemView) {
+            super(itemView);
+
+            this.itemView = itemView;
+            ivType = itemView.findViewById(R.id.ivType);
+            ivAvatar = itemView.findViewById(R.id.ivAvatar);
+            tvName = itemView.findViewById(R.id.tvName);
+            tvEmail = itemView.findViewById(R.id.tvEmail);
+            tvTimes = itemView.findViewById(R.id.tvTimes);
+            tvLast = itemView.findViewById(R.id.tvLast);
+        }
+
+        private void bindTo(EntityContact contact) {
+            if (contact.type == EntityContact.TYPE_FROM)
+                ivType.setImageResource(R.drawable.baseline_mail_24);
+            else if (contact.type == EntityContact.TYPE_TO)
+                ivType.setImageResource(R.drawable.baseline_send_24);
+            else
+                ivType.setImageDrawable(null);
+
+            if (contact.avatar == null)
+                ivAvatar.setImageDrawable(null);
+            else
+                ivAvatar.setImageURI(Uri.parse(contact.avatar + "/photo"));
+
+            tvName.setText(contact.name);
+            tvEmail.setText(contact.email);
+            tvTimes.setText(Integer.toString(contact.times_contacted));
+            tvLast.setText(contact.last_contacted == null
+                    ? null
+                    : DateUtils.getRelativeTimeSpanString(context, contact.last_contacted));
+        }
+    }
+
+    AdapterContact(Context context) {
+        this.context = context;
+        this.inflater = LayoutInflater.from(context);
+        setHasStableIds(true);
+    }
+
+    public void set(@NonNull List<EntityContact> contacts) {
+        Log.i("Set contacts=" + contacts.size());
+
+        all = contacts;
+
+        DiffUtil.DiffResult diff = DiffUtil.calculateDiff(new DiffCallback(filtered, all));
+
+        filtered.clear();
+        filtered.addAll(all);
+
+        diff.dispatchUpdatesTo(new ListUpdateCallback() {
+            @Override
+            public void onInserted(int position, int count) {
+                Log.i("Inserted @" + position + " #" + count);
+            }
+
+            @Override
+            public void onRemoved(int position, int count) {
+                Log.i("Removed @" + position + " #" + count);
+            }
+
+            @Override
+            public void onMoved(int fromPosition, int toPosition) {
+                Log.i("Moved " + fromPosition + ">" + toPosition);
+            }
+
+            @Override
+            public void onChanged(int position, int count, Object payload) {
+                Log.i("Changed @" + position + " #" + count);
+            }
+        });
+        diff.dispatchUpdatesTo(this);
+    }
+
+    private class DiffCallback extends DiffUtil.Callback {
+        private List<EntityContact> prev;
+        private List<EntityContact> next;
+
+        DiffCallback(List<EntityContact> prev, List<EntityContact> next) {
+            this.prev = prev;
+            this.next = next;
+        }
+
+        @Override
+        public int getOldListSize() {
+            return prev.size();
+        }
+
+        @Override
+        public int getNewListSize() {
+            return next.size();
+        }
+
+        @Override
+        public boolean areItemsTheSame(int oldItemPosition, int newItemPosition) {
+            EntityContact c1 = prev.get(oldItemPosition);
+            EntityContact c2 = next.get(newItemPosition);
+            return c1.id.equals(c2.id);
+        }
+
+        @Override
+        public boolean areContentsTheSame(int oldItemPosition, int newItemPosition) {
+            EntityContact c1 = prev.get(oldItemPosition);
+            EntityContact c2 = next.get(newItemPosition);
+            return c1.equals(c2);
+        }
+    }
+
+    @Override
+    public long getItemId(int position) {
+        return filtered.get(position).id;
+    }
+
+    @Override
+    public int getItemCount() {
+        return filtered.size();
+    }
+
+    @Override
+    @NonNull
+    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        return new ViewHolder(inflater.inflate(R.layout.item_contact, parent, false));
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
+        EntityContact contact = filtered.get(position);
+        holder.bindTo(contact);
+    }
+}