110 lines
3.7 KiB
Java
110 lines
3.7 KiB
Java
/* Copyright 2017 Andrew Dawson
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*
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* This file is a part of Tusky.
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*
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* This program is free software; you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation; either version 3 of the
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* License, or (at your option) any later version.
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*
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* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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* Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with Tusky; if not,
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* see <http://www.gnu.org/licenses>. */
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package com.keylesspalace.tusky;
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import android.support.annotation.Nullable;
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import android.support.v7.widget.RecyclerView;
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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 com.keylesspalace.tusky.entity.Status;
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import java.util.ArrayList;
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import java.util.List;
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class ThreadAdapter extends RecyclerView.Adapter implements AdapterItemRemover {
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private List<Status> statuses;
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private StatusActionListener statusActionListener;
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private int statusIndex;
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ThreadAdapter(StatusActionListener listener) {
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this.statusActionListener = listener;
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this.statuses = new ArrayList<>();
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this.statusIndex = 0;
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}
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@Override
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public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
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View view = LayoutInflater.from(parent.getContext())
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.inflate(R.layout.item_status, parent, false);
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return new StatusViewHolder(view);
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}
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@Override
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public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int position) {
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StatusViewHolder holder = (StatusViewHolder) viewHolder;
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Status status = statuses.get(position);
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holder.setupWithStatus(status, statusActionListener);
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}
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@Override
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public int getItemCount() {
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return statuses.size();
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}
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Status getItem(int position) {
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return statuses.get(position);
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}
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public void removeItem(int position) {
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statuses.remove(position);
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notifyItemRemoved(position);
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}
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int setStatus(Status status) {
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if (statuses.size() > 0 && statuses.get(statusIndex).equals(status)) {
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// Do not add this status on refresh, it's already in there.
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statuses.set(statusIndex, status);
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return statusIndex;
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}
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int i = statusIndex;
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statuses.add(i, status);
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notifyItemInserted(i);
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return i;
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}
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void setContext(List<Status> ancestors, List<Status> descendants) {
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Status mainStatus = null;
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// In case of refresh, remove old ancestors and descendants first. We'll remove all blindly,
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// as we have no guarantee on their order to be the same as before
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int old_size = statuses.size();
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if (old_size > 0) {
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mainStatus = statuses.get(statusIndex);
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statuses.clear();
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notifyItemRangeRemoved(0, old_size);
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}
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// Insert newly fetched ancestors
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statusIndex = ancestors.size();
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statuses.addAll(0, ancestors);
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notifyItemRangeInserted(0, statusIndex);
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if (mainStatus != null) {
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// In case we needed to delete everything (which is way easier than deleting
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// everything except one), re-insert the remaining status here.
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statuses.add(statusIndex, mainStatus);
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notifyItemInserted(statusIndex);
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}
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// Insert newly fetched descendants
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int end = statuses.size();
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statuses.addAll(descendants);
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notifyItemRangeInserted(end, descendants.size());
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}
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}
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