815 lines
32 KiB
Java
815 lines
32 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.fragment;
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import android.arch.core.util.Function;
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import android.content.Context;
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import android.content.SharedPreferences;
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import android.graphics.drawable.Drawable;
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import android.os.Bundle;
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import android.preference.PreferenceManager;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import android.support.design.widget.FloatingActionButton;
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import android.support.design.widget.TabLayout;
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import android.support.v4.content.LocalBroadcastManager;
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import android.support.v4.util.Pair;
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import android.support.v4.widget.SwipeRefreshLayout;
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import android.support.v7.widget.DividerItemDecoration;
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import android.support.v7.widget.LinearLayoutManager;
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import android.support.v7.widget.RecyclerView;
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import android.util.Log;
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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.BuildConfig;
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import com.keylesspalace.tusky.R;
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import com.keylesspalace.tusky.adapter.FooterViewHolder;
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import com.keylesspalace.tusky.adapter.TimelineAdapter;
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import com.keylesspalace.tusky.entity.Attachment;
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import com.keylesspalace.tusky.entity.Status;
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import com.keylesspalace.tusky.interfaces.ActionButtonActivity;
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import com.keylesspalace.tusky.interfaces.StatusActionListener;
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import com.keylesspalace.tusky.network.MastodonApi;
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import com.keylesspalace.tusky.receiver.TimelineReceiver;
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import com.keylesspalace.tusky.util.CollectionUtil;
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import com.keylesspalace.tusky.util.Either;
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import com.keylesspalace.tusky.util.HttpHeaderLink;
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import com.keylesspalace.tusky.util.ListUtils;
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import com.keylesspalace.tusky.util.PairedList;
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import com.keylesspalace.tusky.util.ThemeUtils;
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import com.keylesspalace.tusky.util.ViewDataUtils;
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import com.keylesspalace.tusky.view.EndlessOnScrollListener;
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import com.keylesspalace.tusky.viewdata.StatusViewData;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Locale;
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import retrofit2.Call;
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import retrofit2.Callback;
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import retrofit2.Response;
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public class TimelineFragment extends SFragment implements
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SwipeRefreshLayout.OnRefreshListener,
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StatusActionListener,
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SharedPreferences.OnSharedPreferenceChangeListener {
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private static final String TAG = "TimelineF"; // logging tag
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private static final String KIND_ARG = "kind";
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private static final String HASHTAG_OR_ID_ARG = "hashtag_or_id";
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private static final int LOAD_AT_ONCE = 30;
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public enum Kind {
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HOME,
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PUBLIC_LOCAL,
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PUBLIC_FEDERATED,
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TAG,
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USER,
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FAVOURITES,
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LIST
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}
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private enum FetchEnd {
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TOP,
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BOTTOM,
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MIDDLE
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}
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private SwipeRefreshLayout swipeRefreshLayout;
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private TimelineAdapter adapter;
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private Kind kind;
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private String hashtagOrId;
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private RecyclerView recyclerView;
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private LinearLayoutManager layoutManager;
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private EndlessOnScrollListener scrollListener;
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private TabLayout.OnTabSelectedListener onTabSelectedListener;
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private boolean filterRemoveReplies;
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private boolean filterRemoveReblogs;
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private boolean hideFab;
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private TimelineReceiver timelineReceiver;
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private boolean topLoading;
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private int topFetches;
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private boolean bottomLoading;
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private int bottomFetches;
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@Nullable
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private String bottomId;
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@Nullable
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private String topId;
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private boolean alwaysShowSensitiveMedia;
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private PairedList<Either<Placeholder, Status>, StatusViewData> statuses =
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new PairedList<>(new Function<Either<Placeholder, Status>, StatusViewData>() {
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@Override
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public StatusViewData apply(Either<Placeholder, Status> input) {
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Status status = input.getAsRightOrNull();
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if (status != null) {
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return ViewDataUtils.statusToViewData(status, alwaysShowSensitiveMedia);
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} else {
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return new StatusViewData.Placeholder(false);
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}
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}
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});
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public static TimelineFragment newInstance(Kind kind) {
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TimelineFragment fragment = new TimelineFragment();
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Bundle arguments = new Bundle();
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arguments.putString(KIND_ARG, kind.name());
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fragment.setArguments(arguments);
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return fragment;
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}
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public static TimelineFragment newInstance(Kind kind, String hashtagOrId) {
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TimelineFragment fragment = new TimelineFragment();
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Bundle arguments = new Bundle();
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arguments.putString(KIND_ARG, kind.name());
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arguments.putString(HASHTAG_OR_ID_ARG, hashtagOrId);
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fragment.setArguments(arguments);
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return fragment;
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}
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private static final class Placeholder {
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private final static Placeholder INSTANCE = new Placeholder();
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public static Placeholder getInstance() {
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return INSTANCE;
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}
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private Placeholder() {
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}
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}
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@Override
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public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
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Bundle savedInstanceState) {
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Bundle arguments = getArguments();
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kind = Kind.valueOf(arguments.getString(KIND_ARG));
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if (kind == Kind.TAG || kind == Kind.USER || kind == Kind.LIST) {
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hashtagOrId = arguments.getString(HASHTAG_OR_ID_ARG);
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}
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final View rootView = inflater.inflate(R.layout.fragment_timeline, container, false);
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// Setup the SwipeRefreshLayout.
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Context context = getContext();
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swipeRefreshLayout = rootView.findViewById(R.id.swipe_refresh_layout);
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swipeRefreshLayout.setOnRefreshListener(this);
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// Setup the RecyclerView.
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recyclerView = rootView.findViewById(R.id.recycler_view);
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recyclerView.setHasFixedSize(true);
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layoutManager = new LinearLayoutManager(context);
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recyclerView.setLayoutManager(layoutManager);
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DividerItemDecoration divider = new DividerItemDecoration(
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context, layoutManager.getOrientation());
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Drawable drawable = ThemeUtils.getDrawable(context, R.attr.status_divider_drawable,
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R.drawable.status_divider_dark);
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divider.setDrawable(drawable);
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recyclerView.addItemDecoration(divider);
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adapter = new TimelineAdapter(this);
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SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(
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getActivity());
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preferences.registerOnSharedPreferenceChangeListener(this);
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alwaysShowSensitiveMedia = preferences.getBoolean("alwaysShowSensitiveMedia", false);
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boolean mediaPreviewEnabled = preferences.getBoolean("mediaPreviewEnabled", true);
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adapter.setMediaPreviewEnabled(mediaPreviewEnabled);
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recyclerView.setAdapter(adapter);
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boolean filter = preferences.getBoolean("tabFilterHomeReplies", true);
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filterRemoveReplies = kind == Kind.HOME && !filter;
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filter = preferences.getBoolean("tabFilterHomeBoosts", true);
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filterRemoveReblogs = kind == Kind.HOME && !filter;
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timelineReceiver = new TimelineReceiver(this, this);
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LocalBroadcastManager.getInstance(context.getApplicationContext())
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.registerReceiver(timelineReceiver, TimelineReceiver.getFilter(kind));
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statuses.clear();
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topLoading = false;
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topFetches = 0;
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bottomLoading = false;
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bottomFetches = 0;
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bottomId = null;
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topId = null;
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return rootView;
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}
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@Override
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public void onActivityCreated(@Nullable Bundle savedInstanceState) {
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super.onActivityCreated(savedInstanceState);
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if (jumpToTopAllowed()) {
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TabLayout layout = getActivity().findViewById(R.id.tab_layout);
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if (layout != null) {
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onTabSelectedListener = new TabLayout.OnTabSelectedListener() {
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@Override
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public void onTabSelected(TabLayout.Tab tab) {
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}
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@Override
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public void onTabUnselected(TabLayout.Tab tab) {
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}
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@Override
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public void onTabReselected(TabLayout.Tab tab) {
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jumpToTop();
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}
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};
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layout.addOnTabSelectedListener(onTabSelectedListener);
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}
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}
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/* This is delayed until onActivityCreated solely because MainActivity.composeButton isn't
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* guaranteed to be set until then. */
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if (actionButtonPresent()) {
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/* Use a modified scroll listener that both loads more statuses as it goes, and hides
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* the follow button on down-scroll. */
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SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(getContext());
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hideFab = preferences.getBoolean("fabHide", false);
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scrollListener = new EndlessOnScrollListener(layoutManager) {
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@Override
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public void onScrolled(RecyclerView view, int dx, int dy) {
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super.onScrolled(view, dx, dy);
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ActionButtonActivity activity = (ActionButtonActivity) getActivity();
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FloatingActionButton composeButton = activity.getActionButton();
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if (composeButton != null) {
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if (hideFab) {
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if (dy > 0 && composeButton.isShown()) {
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composeButton.hide(); // hides the button if we're scrolling down
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} else if (dy < 0 && !composeButton.isShown()) {
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composeButton.show(); // shows it if we are scrolling up
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}
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} else if (!composeButton.isShown()) {
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composeButton.show();
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}
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}
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}
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@Override
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public void onLoadMore(int page, int totalItemsCount, RecyclerView view) {
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TimelineFragment.this.onLoadMore();
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}
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};
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} else {
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// Just use the basic scroll listener to load more statuses.
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scrollListener = new EndlessOnScrollListener(layoutManager) {
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@Override
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public void onLoadMore(int page, int totalItemsCount, RecyclerView view) {
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TimelineFragment.this.onLoadMore();
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}
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};
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}
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recyclerView.addOnScrollListener(scrollListener);
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}
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@Override
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public void onDestroyView() {
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if (jumpToTopAllowed()) {
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TabLayout tabLayout = getActivity().findViewById(R.id.tab_layout);
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if (tabLayout != null) {
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tabLayout.removeOnTabSelectedListener(onTabSelectedListener);
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}
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}
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LocalBroadcastManager.getInstance(getContext()).unregisterReceiver(timelineReceiver);
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super.onDestroyView();
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}
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@Override
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public void onRefresh() {
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sendFetchTimelineRequest(null, topId, FetchEnd.TOP, -1);
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}
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@Override
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public void onReply(int position) {
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super.reply(statuses.get(position).getAsRight());
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}
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@Override
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public void onReblog(final boolean reblog, final int position) {
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final Status status = statuses.get(position).getAsRight();
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super.reblogWithCallback(status, reblog, new Callback<Status>() {
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@Override
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public void onResponse(@NonNull Call<Status> call, @NonNull Response<Status> response) {
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if (response.isSuccessful()) {
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status.setReblogged(reblog);
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if (status.getReblog() != null) {
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status.getReblog().setReblogged(reblog);
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}
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Pair<StatusViewData.Concrete, Integer> actual =
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findStatusAndPosition(position, status);
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if (actual == null) return;
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StatusViewData newViewData =
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new StatusViewData.Builder(actual.first)
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.setReblogged(reblog)
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.createStatusViewData();
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statuses.setPairedItem(actual.second, newViewData);
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adapter.changeItem(actual.second, newViewData, false);
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}
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}
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@Override
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public void onFailure(@NonNull Call<Status> call, @NonNull Throwable t) {
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Log.d(TAG, "Failed to reblog status " + status.getId(), t);
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}
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});
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}
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@Override
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public void onFavourite(final boolean favourite, final int position) {
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final Status status = statuses.get(position).getAsRight();
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super.favouriteWithCallback(status, favourite, new Callback<Status>() {
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@Override
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public void onResponse(@NonNull Call<Status> call, @NonNull Response<Status> response) {
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if (response.isSuccessful()) {
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status.setFavourited(favourite);
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if (status.getReblog() != null) {
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status.getReblog().setFavourited(favourite);
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}
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Pair<StatusViewData.Concrete, Integer> actual =
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findStatusAndPosition(position, status);
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if (actual == null) return;
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StatusViewData newViewData = new StatusViewData
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.Builder(actual.first)
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.setFavourited(favourite)
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.createStatusViewData();
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statuses.setPairedItem(actual.second, newViewData);
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adapter.changeItem(actual.second, newViewData, false);
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}
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}
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@Override
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public void onFailure(@NonNull Call<Status> call, @NonNull Throwable t) {
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Log.d(TAG, "Failed to favourite status " + status.getId(), t);
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}
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});
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}
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@Override
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public void onMore(View view, final int position) {
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super.more(statuses.get(position).getAsRight(), view, position);
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}
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@Override
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public void onOpenReblog(int position) {
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super.openReblog(statuses.get(position).getAsRight());
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}
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@Override
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public void onExpandedChange(boolean expanded, int position) {
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StatusViewData newViewData = new StatusViewData.Builder(
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((StatusViewData.Concrete) statuses.getPairedItem(position)))
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.setIsExpanded(expanded).createStatusViewData();
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statuses.setPairedItem(position, newViewData);
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adapter.changeItem(position, newViewData, false);
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}
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@Override
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public void onContentHiddenChange(boolean isShowing, int position) {
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StatusViewData newViewData = new StatusViewData.Builder(
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((StatusViewData.Concrete) statuses.getPairedItem(position)))
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.setIsShowingSensitiveContent(isShowing).createStatusViewData();
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statuses.setPairedItem(position, newViewData);
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adapter.changeItem(position, newViewData, false);
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}
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@Override
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public void onLoadMore(int position) {
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//check bounds before accessing list,
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if (statuses.size() >= position && position > 0) {
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Status fromStatus = statuses.get(position - 1).getAsRightOrNull();
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Status toStatus = statuses.get(position + 1).getAsRightOrNull();
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if (fromStatus == null || toStatus == null) {
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Log.e(TAG, "Failed to load more at " + position + ", wrong placeholder position");
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return;
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}
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sendFetchTimelineRequest(fromStatus.getId(), toStatus.getId(), FetchEnd.MIDDLE, position);
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StatusViewData newViewData = new StatusViewData.Placeholder(true);
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statuses.setPairedItem(position, newViewData);
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adapter.changeItem(position, newViewData, false);
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} else {
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Log.e(TAG, "error loading more");
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}
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}
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@Override
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public void onViewMedia(String[] urls, int urlIndex, Attachment.Type type,
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View view) {
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super.viewMedia(urls, urlIndex, type, view);
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}
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@Override
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public void onViewThread(int position) {
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super.viewThread(statuses.get(position).getAsRight());
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}
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@Override
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public void onViewTag(String tag) {
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if (kind == Kind.TAG && hashtagOrId.equals(tag)) {
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// If already viewing a tag page, then ignore any request to view that tag again.
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return;
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}
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super.viewTag(tag);
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}
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@Override
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public void onViewAccount(String id) {
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if (kind == Kind.USER && hashtagOrId.equals(id)) {
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/* If already viewing an account page, then any requests to view that account page
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* should be ignored. */
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return;
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}
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super.viewAccount(id);
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}
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@Override
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public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
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switch (key) {
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case "fabHide": {
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hideFab = sharedPreferences.getBoolean("fabHide", false);
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break;
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}
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case "mediaPreviewEnabled": {
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boolean enabled = sharedPreferences.getBoolean("mediaPreviewEnabled", true);
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adapter.setMediaPreviewEnabled(enabled);
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fullyRefresh();
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break;
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}
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case "tabFilterHomeReplies": {
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boolean filter = sharedPreferences.getBoolean("tabFilterHomeReplies", true);
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boolean oldRemoveReplies = filterRemoveReplies;
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filterRemoveReplies = kind == Kind.HOME && !filter;
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if (adapter.getItemCount() > 1 && oldRemoveReplies != filterRemoveReplies) {
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fullyRefresh();
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}
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break;
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}
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case "tabFilterHomeBoosts": {
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boolean filter = sharedPreferences.getBoolean("tabFilterHomeBoosts", true);
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boolean oldRemoveReblogs = filterRemoveReblogs;
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filterRemoveReblogs = kind == Kind.HOME && !filter;
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if (adapter.getItemCount() > 1 && oldRemoveReblogs != filterRemoveReblogs) {
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fullyRefresh();
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}
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break;
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}
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case "alwaysShowSensitiveMedia": {
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//it is ok if only newly loaded statuses are affected, no need to fully refresh
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alwaysShowSensitiveMedia = sharedPreferences.getBoolean("alwaysShowSensitiveMedia", false);
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}
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}
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}
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@Override
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public void removeItem(int position) {
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statuses.remove(position);
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adapter.update(statuses.getPairedCopy());
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}
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@Override
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public void removeAllByAccountId(String accountId) {
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// using iterator to safely remove items while iterating
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Iterator<Either<Placeholder, Status>> iterator = statuses.iterator();
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while (iterator.hasNext()) {
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Status status = iterator.next().getAsRightOrNull();
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if (status != null && status.getAccount().getId().equals(accountId)) {
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iterator.remove();
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}
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}
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adapter.update(statuses.getPairedCopy());
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}
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private void onLoadMore() {
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sendFetchTimelineRequest(bottomId, null, FetchEnd.BOTTOM, -1);
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}
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private void fullyRefresh() {
|
|
adapter.clear();
|
|
sendFetchTimelineRequest(null, null, FetchEnd.TOP, -1);
|
|
}
|
|
|
|
private boolean jumpToTopAllowed() {
|
|
return kind != Kind.TAG && kind != Kind.FAVOURITES;
|
|
}
|
|
|
|
private boolean actionButtonPresent() {
|
|
return kind != Kind.TAG && kind != Kind.FAVOURITES;
|
|
}
|
|
|
|
private void jumpToTop() {
|
|
layoutManager.scrollToPosition(0);
|
|
scrollListener.reset();
|
|
}
|
|
|
|
private Call<List<Status>> getFetchCallByTimelineType(Kind kind, String tagOrId, String fromId,
|
|
String uptoId) {
|
|
MastodonApi api = mastodonApi;
|
|
switch (kind) {
|
|
default:
|
|
case HOME:
|
|
return api.homeTimeline(fromId, uptoId, null);
|
|
case PUBLIC_FEDERATED:
|
|
return api.publicTimeline(null, fromId, uptoId, LOAD_AT_ONCE);
|
|
case PUBLIC_LOCAL:
|
|
return api.publicTimeline(true, fromId, uptoId, LOAD_AT_ONCE);
|
|
case TAG:
|
|
return api.hashtagTimeline(tagOrId, null, fromId, uptoId, LOAD_AT_ONCE);
|
|
case USER:
|
|
return api.accountStatuses(tagOrId, fromId, uptoId, LOAD_AT_ONCE, null);
|
|
case FAVOURITES:
|
|
return api.favourites(fromId, uptoId, LOAD_AT_ONCE);
|
|
case LIST:
|
|
return api.listTimeline(tagOrId, fromId, uptoId, LOAD_AT_ONCE);
|
|
}
|
|
}
|
|
|
|
private void sendFetchTimelineRequest(@Nullable String fromId, @Nullable String uptoId,
|
|
final FetchEnd fetchEnd, final int pos) {
|
|
/* If there is a fetch already ongoing, record however many fetches are requested and
|
|
* fulfill them after it's complete. */
|
|
if (fetchEnd == FetchEnd.TOP && topLoading) {
|
|
topFetches++;
|
|
return;
|
|
}
|
|
if (fetchEnd == FetchEnd.BOTTOM && bottomLoading) {
|
|
bottomFetches++;
|
|
return;
|
|
}
|
|
|
|
if (fromId != null || adapter.getItemCount() <= 1) {
|
|
/* When this is called by the EndlessScrollListener it cannot refresh the footer state
|
|
* using adapter.notifyItemChanged. So its necessary to postpone doing so until a
|
|
* convenient time for the UI thread using a Runnable. */
|
|
recyclerView.post(() -> adapter.setFooterState(FooterViewHolder.State.LOADING));
|
|
}
|
|
|
|
Callback<List<Status>> callback = new Callback<List<Status>>() {
|
|
@Override
|
|
public void onResponse(@NonNull Call<List<Status>> call, @NonNull Response<List<Status>> response) {
|
|
if (response.isSuccessful()) {
|
|
String linkHeader = response.headers().get("Link");
|
|
onFetchTimelineSuccess(response.body(), linkHeader, fetchEnd, pos);
|
|
} else {
|
|
onFetchTimelineFailure(new Exception(response.message()), fetchEnd, pos);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onFailure(@NonNull Call<List<Status>> call, @NonNull Throwable t) {
|
|
onFetchTimelineFailure((Exception) t, fetchEnd, pos);
|
|
}
|
|
};
|
|
|
|
Call<List<Status>> listCall = getFetchCallByTimelineType(kind, hashtagOrId, fromId, uptoId);
|
|
callList.add(listCall);
|
|
listCall.enqueue(callback);
|
|
}
|
|
|
|
private void onFetchTimelineSuccess(List<Status> statuses, String linkHeader,
|
|
FetchEnd fetchEnd, int pos) {
|
|
// We filled the hole (or reached the end) if the server returned less statuses than we
|
|
// we asked for.
|
|
boolean fullFetch = statuses.size() >= LOAD_AT_ONCE;
|
|
filterStatuses(statuses);
|
|
List<HttpHeaderLink> links = HttpHeaderLink.parse(linkHeader);
|
|
switch (fetchEnd) {
|
|
case TOP: {
|
|
HttpHeaderLink previous = HttpHeaderLink.findByRelationType(links, "prev");
|
|
String uptoId = null;
|
|
if (previous != null) {
|
|
uptoId = previous.uri.getQueryParameter("since_id");
|
|
}
|
|
updateStatuses(statuses, null, uptoId, fullFetch);
|
|
break;
|
|
}
|
|
case MIDDLE: {
|
|
replacePlaceholderWithStatuses(statuses, fullFetch, pos);
|
|
break;
|
|
}
|
|
case BOTTOM: {
|
|
HttpHeaderLink next = HttpHeaderLink.findByRelationType(links, "next");
|
|
String fromId = null;
|
|
if (next != null) {
|
|
fromId = next.uri.getQueryParameter("max_id");
|
|
}
|
|
if (adapter.getItemCount() > 1) {
|
|
addItems(statuses, fromId);
|
|
} else {
|
|
/* If this is the first fetch, also save the id from the "previous" link and
|
|
* treat this operation as a refresh so the scroll position doesn't get pushed
|
|
* down to the end. */
|
|
HttpHeaderLink previous = HttpHeaderLink.findByRelationType(links, "prev");
|
|
String uptoId = null;
|
|
if (previous != null) {
|
|
uptoId = previous.uri.getQueryParameter("since_id");
|
|
}
|
|
updateStatuses(statuses, fromId, uptoId, fullFetch);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
fulfillAnyQueuedFetches(fetchEnd);
|
|
if (statuses.size() == 0 && adapter.getItemCount() == 1) {
|
|
adapter.setFooterState(FooterViewHolder.State.EMPTY);
|
|
} else {
|
|
adapter.setFooterState(FooterViewHolder.State.END);
|
|
}
|
|
swipeRefreshLayout.setRefreshing(false);
|
|
}
|
|
|
|
private void onFetchTimelineFailure(Exception exception, FetchEnd fetchEnd, int position) {
|
|
swipeRefreshLayout.setRefreshing(false);
|
|
|
|
if (fetchEnd == FetchEnd.MIDDLE && !statuses.get(position).isRight()) {
|
|
StatusViewData newViewData = new StatusViewData.Placeholder(false);
|
|
statuses.setPairedItem(position, newViewData);
|
|
adapter.changeItem(position, newViewData, true);
|
|
}
|
|
|
|
Log.e(TAG, "Fetch Failure: " + exception.getMessage());
|
|
fulfillAnyQueuedFetches(fetchEnd);
|
|
}
|
|
|
|
private void fulfillAnyQueuedFetches(FetchEnd fetchEnd) {
|
|
switch (fetchEnd) {
|
|
case BOTTOM: {
|
|
bottomLoading = false;
|
|
if (bottomFetches > 0) {
|
|
bottomFetches--;
|
|
onLoadMore();
|
|
}
|
|
break;
|
|
}
|
|
case TOP: {
|
|
topLoading = false;
|
|
if (topFetches > 0) {
|
|
topFetches--;
|
|
onRefresh();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
private void filterStatuses(List<Status> statuses) {
|
|
Iterator<Status> it = statuses.iterator();
|
|
while (it.hasNext()) {
|
|
Status status = it.next();
|
|
if ((status.getInReplyToId() != null && filterRemoveReplies)
|
|
|| (status.getReblog() != null && filterRemoveReblogs)) {
|
|
it.remove();
|
|
}
|
|
}
|
|
}
|
|
|
|
private void updateStatuses(List<Status> newStatuses, @Nullable String fromId,
|
|
@Nullable String toId, boolean fullFetch) {
|
|
if (ListUtils.isEmpty(newStatuses)) {
|
|
return;
|
|
}
|
|
if (fromId != null) {
|
|
bottomId = fromId;
|
|
}
|
|
if (toId != null) {
|
|
topId = toId;
|
|
}
|
|
|
|
List<Either<Placeholder, Status>> liftedNew = listStatusList(newStatuses);
|
|
|
|
if (statuses.isEmpty()) {
|
|
statuses.addAll(liftedNew);
|
|
} else {
|
|
Either<Placeholder, Status> lastOfNew = liftedNew.get(newStatuses.size() - 1);
|
|
int index = statuses.indexOf(lastOfNew);
|
|
|
|
for (int i = 0; i < index; i++) {
|
|
statuses.remove(0);
|
|
}
|
|
int newIndex = liftedNew.indexOf(statuses.get(0));
|
|
if (newIndex == -1) {
|
|
if (index == -1 && fullFetch) {
|
|
liftedNew.add(Either.left(Placeholder.getInstance()));
|
|
}
|
|
statuses.addAll(0, liftedNew);
|
|
} else {
|
|
statuses.addAll(0, liftedNew.subList(0, newIndex));
|
|
}
|
|
}
|
|
adapter.update(statuses.getPairedCopy());
|
|
}
|
|
|
|
private void addItems(List<Status> newStatuses, @Nullable String fromId) {
|
|
if (ListUtils.isEmpty(newStatuses)) {
|
|
return;
|
|
}
|
|
int end = statuses.size();
|
|
Status last = statuses.get(end - 1).getAsRightOrNull();
|
|
// I was about to replace findStatus with indexOf but it is incorrect to compare value
|
|
// types by ID anyway and we should change equals() for Status, I think, so this makes sense
|
|
if (last != null && !findStatus(newStatuses, last.getId())) {
|
|
statuses.addAll(listStatusList(newStatuses));
|
|
List<StatusViewData> newViewDatas = statuses.getPairedCopy()
|
|
.subList(statuses.size() - newStatuses.size(), statuses.size());
|
|
if (BuildConfig.DEBUG && newStatuses.size() != newViewDatas.size()) {
|
|
String error = String.format(Locale.getDefault(),
|
|
"Incorrectly got statusViewData sublist." +
|
|
" newStatuses.size == %d newViewDatas.size == %d, statuses.size == %d",
|
|
newStatuses.size(), newViewDatas.size(), statuses.size());
|
|
throw new AssertionError(error);
|
|
}
|
|
if (fromId != null) {
|
|
bottomId = fromId;
|
|
}
|
|
adapter.addItems(newViewDatas);
|
|
}
|
|
}
|
|
|
|
private void replacePlaceholderWithStatuses(List<Status> newStatuses, boolean fullFetch, int pos) {
|
|
Status status = statuses.get(pos).getAsRightOrNull();
|
|
if (status == null) {
|
|
statuses.remove(pos);
|
|
}
|
|
|
|
if (ListUtils.isEmpty(newStatuses)) {
|
|
adapter.update(statuses.getPairedCopy());
|
|
return;
|
|
}
|
|
|
|
List<Either<Placeholder, Status>> liftedNew = listStatusList(newStatuses);
|
|
|
|
if (fullFetch) {
|
|
liftedNew.add(Either.left(Placeholder.getInstance()));
|
|
}
|
|
|
|
statuses.addAll(pos, liftedNew);
|
|
adapter.update(statuses.getPairedCopy());
|
|
|
|
}
|
|
|
|
private static boolean findStatus(List<Status> statuses, String id) {
|
|
for (Status status : statuses) {
|
|
if (status.getId().equals(id)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private final Function<Status, Either<Placeholder, Status>> statusLifter =
|
|
Either::right;
|
|
|
|
private @Nullable
|
|
Pair<StatusViewData.Concrete, Integer>
|
|
findStatusAndPosition(int position, Status status) {
|
|
StatusViewData.Concrete statusToUpdate;
|
|
int positionToUpdate;
|
|
StatusViewData someOldViewData = statuses.getPairedItem(position);
|
|
|
|
// Unlikely, but data could change between the request and response
|
|
if ((someOldViewData instanceof StatusViewData.Placeholder) ||
|
|
!((StatusViewData.Concrete) someOldViewData).getId().equals(status.getId())) {
|
|
// try to find the status we need to update
|
|
int foundPos = statuses.indexOf(Either.<Placeholder, Status>right(status));
|
|
if (foundPos < 0) return null; // okay, it's hopeless, give up
|
|
statusToUpdate = ((StatusViewData.Concrete)
|
|
statuses.getPairedItem(foundPos));
|
|
positionToUpdate = position;
|
|
} else {
|
|
statusToUpdate = (StatusViewData.Concrete) someOldViewData;
|
|
positionToUpdate = position;
|
|
}
|
|
return new Pair<>(statusToUpdate, positionToUpdate);
|
|
}
|
|
|
|
private List<Either<Placeholder, Status>> listStatusList(List<Status> list) {
|
|
return CollectionUtil.map(list, statusLifter);
|
|
}
|
|
}
|