Yuito-app-android/app/src/main/java/com/keylesspalace/tusky/TimelineAdapter.java

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Java
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/* Copyright 2017 Andrew Dawson
*
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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
* GNU General Public License as published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
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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
* 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,
* see <http://www.gnu.org/licenses>. */
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package com.keylesspalace.tusky;
import android.support.annotation.Nullable;
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import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.keylesspalace.tusky.entity.Status;
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import java.util.ArrayList;
import java.util.List;
class TimelineAdapter extends RecyclerView.Adapter implements AdapterItemRemover {
private static final int VIEW_TYPE_STATUS = 0;
private static final int VIEW_TYPE_FOOTER = 1;
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private List<Status> statuses;
private StatusActionListener statusListener;
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TimelineAdapter(StatusActionListener statusListener) {
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super();
statuses = new ArrayList<>();
this.statusListener = statusListener;
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}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
switch (viewType) {
default:
case VIEW_TYPE_STATUS: {
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.item_status, viewGroup, false);
return new StatusViewHolder(view);
}
case VIEW_TYPE_FOOTER: {
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.item_footer, viewGroup, false);
return new FooterViewHolder(view);
}
}
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}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int position) {
if (position < statuses.size()) {
StatusViewHolder holder = (StatusViewHolder) viewHolder;
Status status = statuses.get(position);
holder.setupWithStatus(status, statusListener);
}
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}
@Override
public int getItemCount() {
return statuses.size() + 1;
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}
@Override
public int getItemViewType(int position) {
if (position == statuses.size()) {
return VIEW_TYPE_FOOTER;
} else {
return VIEW_TYPE_STATUS;
}
}
void update(List<Status> newStatuses) {
if (newStatuses == null || newStatuses.isEmpty()) {
return;
}
if (statuses.isEmpty()) {
statuses = newStatuses;
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} else {
int index = statuses.indexOf(newStatuses.get(newStatuses.size() - 1));
for (int i = 0; i < index; i++) {
statuses.remove(0);
}
int newIndex = newStatuses.indexOf(statuses.get(0));
if (newIndex == -1) {
statuses.addAll(0, newStatuses);
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} else {
statuses.addAll(0, newStatuses.subList(0, newIndex));
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}
}
notifyDataSetChanged();
}
void addItems(List<Status> newStatuses) {
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int end = statuses.size();
statuses.addAll(newStatuses);
notifyItemRangeInserted(end, newStatuses.size());
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}
public void removeItem(int position) {
statuses.remove(position);
notifyItemRemoved(position);
}
@Nullable
Status getItem(int position) {
if (position >= 0 && position < statuses.size()) {
return statuses.get(position);
}
return null;
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}
}