mirror of https://github.com/M66B/FairEmail.git
M66B
6 years ago
parent
9dd73d9d46
commit
dca3447446
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package eu.faircode.email;
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/*
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This file is part of FairEmail.
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FairEmail is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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FairEmail is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2018-2019 by Marcel Bokhorst (M66B)
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*/
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import android.content.Context;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ImageView;
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import android.widget.TextView;
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import androidx.annotation.NonNull;
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import androidx.lifecycle.LifecycleOwner;
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import androidx.recyclerview.widget.DiffUtil;
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import androidx.recyclerview.widget.ListUpdateCallback;
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import androidx.recyclerview.widget.RecyclerView;
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import java.util.ArrayList;
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import java.util.List;
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public class AdapterFolderSelect extends RecyclerView.Adapter<AdapterFolderSelect.ViewHolder> {
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private Context context;
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private LifecycleOwner owner;
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private IFolderSelectedListener listener;
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private LayoutInflater inflater;
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private List<EntityFolder> items = new ArrayList<>();
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public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
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private View view;
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private ImageView ivType;
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private TextView tvName;
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ViewHolder(View itemView) {
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super(itemView);
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view = itemView.findViewById(R.id.clItem);
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ivType = itemView.findViewById(R.id.ivType);
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tvName = itemView.findViewById(R.id.tvName);
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}
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private void wire() {
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view.setOnClickListener(this);
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}
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private void unwire() {
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view.setOnClickListener(null);
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}
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private void bindTo(EntityFolder folder) {
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ivType.setImageResource(EntityFolder.getIcon(folder.type));
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tvName.setText(folder.getDisplayName(context));
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}
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@Override
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public void onClick(View v) {
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int pos = getAdapterPosition();
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if (pos == RecyclerView.NO_POSITION)
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return;
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EntityFolder folder = items.get(pos);
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if (folder != null)
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listener.onFolderSelected(folder);
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}
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}
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AdapterFolderSelect(Context context, LifecycleOwner owner, IFolderSelectedListener listener) {
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this.context = context;
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this.owner = owner;
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this.listener = listener;
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this.inflater = LayoutInflater.from(context);
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setHasStableIds(true);
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}
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public void set(@NonNull List<EntityFolder> folders) {
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Log.i("Set folders=" + folders.size());
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DiffUtil.DiffResult diff = DiffUtil.calculateDiff(new DiffCallback(items, folders), false);
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items = folders;
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diff.dispatchUpdatesTo(new ListUpdateCallback() {
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@Override
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public void onInserted(int position, int count) {
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Log.i("Inserted @" + position + " #" + count);
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}
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@Override
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public void onRemoved(int position, int count) {
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Log.i("Removed @" + position + " #" + count);
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}
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@Override
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public void onMoved(int fromPosition, int toPosition) {
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Log.i("Moved " + fromPosition + ">" + toPosition);
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}
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@Override
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public void onChanged(int position, int count, Object payload) {
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Log.i("Changed @" + position + " #" + count);
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}
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});
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diff.dispatchUpdatesTo(this);
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}
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private class DiffCallback extends DiffUtil.Callback {
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private List<EntityFolder> prev = new ArrayList<>();
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private List<EntityFolder> next = new ArrayList<>();
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DiffCallback(List<EntityFolder> prev, List<EntityFolder> next) {
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this.prev.addAll(prev);
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this.next.addAll(next);
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}
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@Override
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public int getOldListSize() {
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return prev.size();
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}
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@Override
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public int getNewListSize() {
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return next.size();
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}
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@Override
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public boolean areItemsTheSame(int oldItemPosition, int newItemPosition) {
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EntityFolder m1 = prev.get(oldItemPosition);
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EntityFolder m2 = next.get(newItemPosition);
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return m1.id.equals(m2.id);
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}
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@Override
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public boolean areContentsTheSame(int oldItemPosition, int newItemPosition) {
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EntityFolder m1 = prev.get(oldItemPosition);
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EntityFolder m2 = next.get(newItemPosition);
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return m1.id.equals(m2.id);
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}
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}
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@Override
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public long getItemId(int position) {
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return items.get(position).id;
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}
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@Override
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public int getItemCount() {
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return items.size();
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}
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@Override
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@NonNull
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public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
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return new ViewHolder(inflater.inflate(R.layout.item_folder_select, parent, false));
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}
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@Override
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public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
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holder.unwire();
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EntityFolder folder = items.get(position);
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holder.bindTo(folder);
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holder.wire();
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}
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interface IFolderSelectedListener {
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void onFolderSelected(EntityFolder folder);
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}
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}
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