Show selected folders in navigation menu

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

@@ -0,0 +1,225 @@
+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.content.Intent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.lifecycle.LifecycleOwner;
+import androidx.localbroadcastmanager.content.LocalBroadcastManager;
+import androidx.recyclerview.widget.DiffUtil;
+import androidx.recyclerview.widget.ListUpdateCallback;
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.text.Collator;
+import java.text.NumberFormat;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+import java.util.Locale;
+
+public class AdapterNavFolder extends RecyclerView.Adapter<AdapterNavFolder.ViewHolder> {
+    private Context context;
+    private LifecycleOwner owner;
+    private LayoutInflater inflater;
+
+    private List<TupleFolderNav> items = new ArrayList<>();
+
+    private NumberFormat nf = NumberFormat.getNumberInstance();
+
+    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
+        private View view;
+        private ImageView ivItem;
+        private TextView tvItem;
+
+        ViewHolder(View itemView) {
+            super(itemView);
+
+            view = itemView.findViewById(R.id.clItem);
+            ivItem = itemView.findViewById(R.id.ivItem);
+            tvItem = itemView.findViewById(R.id.tvItem);
+        }
+
+        private void wire() {
+            view.setOnClickListener(this);
+        }
+
+        private void unwire() {
+            view.setOnClickListener(null);
+        }
+
+        private void bindTo(TupleFolderNav folder) {
+            ivItem.setImageResource("connected".equals(folder.state)
+                    ? R.drawable.baseline_folder_24
+                    : R.drawable.baseline_folder_open_24);
+            if (folder.color == null)
+                ivItem.clearColorFilter();
+            else
+                ivItem.setColorFilter(folder.color);
+
+            int count = (EntityFolder.OUTBOX.equals(folder.type) ? folder.operations : folder.unseen);
+
+            if (count == 0)
+                tvItem.setText(folder.getDisplayName(context));
+            else
+                tvItem.setText(context.getString(R.string.title_name_count,
+                        folder.getDisplayName(context), nf.format(count)));
+
+            tvItem.setTextColor(Helper.resolveColor(context,
+                    count == 0 ? android.R.attr.textColorSecondary : R.attr.colorUnread));
+        }
+
+        @Override
+        public void onClick(View v) {
+            int pos = getAdapterPosition();
+            if (pos == RecyclerView.NO_POSITION)
+                return;
+
+            TupleFolderNav folder = items.get(pos);
+            if (folder == null)
+                return;
+
+            LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(context);
+            lbm.sendBroadcast(
+                    new Intent(ActivityView.ACTION_VIEW_MESSAGES)
+                            .putExtra("account", folder.account)
+                            .putExtra("folder", folder.id));
+        }
+    }
+
+    AdapterNavFolder(Context context, LifecycleOwner owner) {
+        this.context = context;
+        this.owner = owner;
+        this.inflater = LayoutInflater.from(context);
+        setHasStableIds(true);
+    }
+
+    public void set(@NonNull List<TupleFolderNav> folders) {
+        Log.i("Set nav folders=" + folders.size());
+
+        final Collator collator = Collator.getInstance(Locale.getDefault());
+        collator.setStrength(Collator.SECONDARY); // Case insensitive, process accents etc
+
+        Collections.sort(folders, new Comparator<EntityFolder>() {
+            @Override
+            public int compare(EntityFolder f1, EntityFolder f2) {
+                int o = Boolean.compare(EntityFolder.OUTBOX.equals(f1.type), EntityFolder.OUTBOX.equals(f2.type));
+                if (o != 0)
+                    return o;
+
+                String name1 = f1.getDisplayName(context);
+                String name2 = f2.getDisplayName(context);
+                return collator.compare(name1, name2);
+            }
+        });
+
+        DiffUtil.DiffResult diff = DiffUtil.calculateDiff(new DiffCallback(items, folders), false);
+
+        items = folders;
+
+        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<TupleFolderNav> prev = new ArrayList<>();
+        private List<TupleFolderNav> next = new ArrayList<>();
+
+        DiffCallback(List<TupleFolderNav> prev, List<TupleFolderNav> next) {
+            this.prev.addAll(prev);
+            this.next.addAll(next);
+        }
+
+        @Override
+        public int getOldListSize() {
+            return prev.size();
+        }
+
+        @Override
+        public int getNewListSize() {
+            return next.size();
+        }
+
+        @Override
+        public boolean areItemsTheSame(int oldItemPosition, int newItemPosition) {
+            TupleFolderNav f1 = prev.get(oldItemPosition);
+            TupleFolderNav f2 = next.get(newItemPosition);
+            return f1.id.equals(f2.id);
+        }
+
+        @Override
+        public boolean areContentsTheSame(int oldItemPosition, int newItemPosition) {
+            TupleFolderNav f1 = prev.get(oldItemPosition);
+            TupleFolderNav f2 = next.get(newItemPosition);
+            return f1.equals(f2);
+        }
+    }
+
+    @Override
+    public long getItemId(int position) {
+        return items.get(position).id;
+    }
+
+    @Override
+    public int getItemCount() {
+        return items.size();
+    }
+
+    @Override
+    @NonNull
+    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        return new ViewHolder(inflater.inflate(R.layout.item_nav, parent, false));
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
+        holder.unwire();
+        TupleFolderNav folder = items.get(position);
+        holder.bindTo(folder);
+        holder.wire();
+    }
+}