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/* Copyright 2017 Andrew Dawson
*
* This file is a part of Tusky.
*
* 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.
*
* Tusky 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 Tusky; if not,
* see <http://www.gnu.org/licenses>. */
package com.keylesspalace.tusky.fragment;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.text.TextUtils;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.google.android.material.snackbar.Snackbar;
import com.keylesspalace.tusky.AccountListActivity;
import com.keylesspalace.tusky.BaseActivity;
import com.keylesspalace.tusky.BuildConfig;
import com.keylesspalace.tusky.R;
import com.keylesspalace.tusky.ViewThreadActivity;
import com.keylesspalace.tusky.adapter.ThreadAdapter;
import com.keylesspalace.tusky.appstore.BlockEvent;
import com.keylesspalace.tusky.appstore.EventHub;
import com.keylesspalace.tusky.appstore.FavoriteEvent;
import com.keylesspalace.tusky.appstore.ReblogEvent;
import com.keylesspalace.tusky.appstore.StatusComposedEvent;
import com.keylesspalace.tusky.appstore.StatusDeletedEvent;
import com.keylesspalace.tusky.di.Injectable;
import com.keylesspalace.tusky.entity.Card;
import com.keylesspalace.tusky.entity.Status;
import com.keylesspalace.tusky.entity.StatusContext;
import com.keylesspalace.tusky.interfaces.StatusActionListener;
import com.keylesspalace.tusky.network.MastodonApi;
import com.keylesspalace.tusky.network.TimelineCases;
import com.keylesspalace.tusky.util.ListStatusAccessibilityDelegate;
import com.keylesspalace.tusky.util.PairedList;
import com.keylesspalace.tusky.util.SmartLengthInputFilter;
import com.keylesspalace.tusky.util.ThemeUtils;
import com.keylesspalace.tusky.util.ViewDataUtils;
import com.keylesspalace.tusky.view.ConversationLineItemDecoration;
import com.keylesspalace.tusky.viewdata.StatusViewData;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import javax.inject.Inject;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.arch.core.util.Function;
import androidx.core.util.Pair;
import androidx.lifecycle.Lifecycle;
import androidx.recyclerview.widget.DividerItemDecoration;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import androidx.recyclerview.widget.SimpleItemAnimator;
import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
import io.reactivex.android.schedulers.AndroidSchedulers;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import static com.uber.autodispose.AutoDispose.autoDisposable;
import static com.uber.autodispose.android.lifecycle.AndroidLifecycleScopeProvider.from;
public final class ViewThreadFragment extends SFragment implements
SwipeRefreshLayout.OnRefreshListener, StatusActionListener, Injectable {
private static final String TAG = "ViewThreadFragment";
@Inject
public TimelineCases timelineCases;
@Inject
public MastodonApi mastodonApi;
@Inject
public EventHub eventHub;
private SwipeRefreshLayout swipeRefreshLayout;
private RecyclerView recyclerView;
private ThreadAdapter adapter;
private String thisThreadsStatusId;
private Card card;
private boolean alwaysShowSensitiveMedia;
private int statusIndex = 0;
private final PairedList<Status, StatusViewData.Concrete> statuses =
new PairedList<>(new Function<Status, StatusViewData.Concrete>() {
@Override
public StatusViewData.Concrete apply(Status input) {
return ViewDataUtils.statusToViewData(
input,
alwaysShowSensitiveMedia
);
}
});
public static ViewThreadFragment newInstance(String id) {
Bundle arguments = new Bundle();
ViewThreadFragment fragment = new ViewThreadFragment();
arguments.putString("id", id);
fragment.setArguments(arguments);
return fragment;
}
@Override
protected TimelineCases timelineCases() {
return timelineCases;
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
thisThreadsStatusId = getArguments().getString("id");
adapter = new ThreadAdapter(this);
}
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,
@Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_view_thread, container, false);
Context context = getContext();
swipeRefreshLayout = rootView.findViewById(R.id.swipeRefreshLayout);
swipeRefreshLayout.setOnRefreshListener(this);
swipeRefreshLayout.setColorSchemeResources(R.color.tusky_blue);
swipeRefreshLayout.setProgressBackgroundColorSchemeColor(
ThemeUtils.getColor(context, android.R.attr.colorBackground));
recyclerView = rootView.findViewById(R.id.recyclerView);
recyclerView.setHasFixedSize(true);
LinearLayoutManager layoutManager = new LinearLayoutManager(context);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAccessibilityDelegateCompat(
new ListStatusAccessibilityDelegate(recyclerView, this, statuses::getPairedItem));
DividerItemDecoration divider = new DividerItemDecoration(
context, layoutManager.getOrientation());
recyclerView.addItemDecoration(divider);
Drawable threadLineDrawable = ThemeUtils.getDrawable(context, R.attr.conversation_thread_line_drawable,
R.drawable.conversation_thread_line_dark);
recyclerView.addItemDecoration(new ConversationLineItemDecoration(context,
threadLineDrawable));
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(
getActivity());
alwaysShowSensitiveMedia = accountManager.getActiveAccount().getAlwaysShowSensitiveMedia();
boolean mediaPreviewEnabled = accountManager.getActiveAccount().getMediaPreviewEnabled();
adapter.setMediaPreviewEnabled(mediaPreviewEnabled);
boolean useAbsoluteTime = preferences.getBoolean("absoluteTimeView", false);
adapter.setUseAbsoluteTime(useAbsoluteTime);
recyclerView.setAdapter(adapter);
statuses.clear();
((SimpleItemAnimator) recyclerView.getItemAnimator()).setSupportsChangeAnimations(false);
return rootView;
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
onRefresh();
eventHub.getEvents()
.observeOn(AndroidSchedulers.mainThread())
.as(autoDisposable(from(this, Lifecycle.Event.ON_DESTROY)))
.subscribe(event -> {
if (event instanceof FavoriteEvent) {
handleFavEvent((FavoriteEvent) event);
} else if (event instanceof ReblogEvent) {
handleReblogEvent((ReblogEvent) event);
} else if (event instanceof BlockEvent) {
removeAllByAccountId(((BlockEvent) event).getAccountId());
} else if (event instanceof StatusComposedEvent) {
handleStatusComposedEvent((StatusComposedEvent) event);
} else if (event instanceof StatusDeletedEvent) {
handleStatusDeletedEvent((StatusDeletedEvent) event);
}
});
}
public void onRevealPressed() {
boolean allExpanded = allExpanded();
for (int i = 0; i < statuses.size(); i++) {
StatusViewData.Concrete newViewData =
new StatusViewData.Concrete.Builder(statuses.getPairedItem(i))
.setIsExpanded(!allExpanded)
.createStatusViewData();
statuses.setPairedItem(i, newViewData);
}
adapter.setStatuses(statuses.getPairedCopy());
}
private boolean allExpanded() {
boolean allExpanded = true;
for (int i = 0; i < statuses.size(); i++) {
if (!statuses.getPairedItem(i).isExpanded()) {
allExpanded = false;
break;
}
}
return allExpanded;
}
@Override
public void onRefresh() {
sendStatusRequest(thisThreadsStatusId);
sendThreadRequest(thisThreadsStatusId);
sendCardRequest(thisThreadsStatusId);
}
@Override
public void onReply(int position) {
super.reply(statuses.get(position));
}
@Override
public void onReblog(final boolean reblog, final int position) {
final Status status = statuses.get(position);
timelineCases.reblog(statuses.get(position), reblog)
.observeOn(AndroidSchedulers.mainThread())
.as(autoDisposable(from(this)))
.subscribe(
(newStatus) -> updateStatus(position, newStatus),
(t) -> {
Log.d(getClass().getSimpleName(),
"Failed to reblog status: " + status.getId());
t.printStackTrace();
}
);
}
@Override
public void onFavourite(final boolean favourite, final int position) {
final Status status = statuses.get(position);
timelineCases.favourite(statuses.get(position), favourite)
.observeOn(AndroidSchedulers.mainThread())
.as(autoDisposable(from(this)))
.subscribe(
(newStatus) -> updateStatus(position, newStatus),
(t) -> {
Log.d(getClass().getSimpleName(), "Failed to favourite status: " + status.getId());
t.printStackTrace();
}
);
}
private void updateStatus(int position, Status status) {
if (position >= 0 && position < statuses.size()) {
Status actionableStatus = status.getActionableStatus();
StatusViewData.Concrete viewData = new StatusViewData.Builder(statuses.getPairedItem(position))
.setReblogged(actionableStatus.getReblogged())
.setReblogsCount(actionableStatus.getReblogsCount())
.setFavourited(actionableStatus.getFavourited())
.setFavouritesCount(actionableStatus.getFavouritesCount())
.createStatusViewData();
statuses.setPairedItem(position, viewData);
adapter.setItem(position, viewData, true);
}
}
@Override
public void onMore(@NonNull View view, int position) {
super.more(statuses.get(position), view, position);
}
@Override
public void onViewMedia(int position, int attachmentIndex, @NonNull View view) {
Status status = statuses.get(position);
super.viewMedia(attachmentIndex, status, view);
}
@Override
public void onViewThread(int position) {
Status status = statuses.get(position);
if (thisThreadsStatusId.equals(status.getId())) {
// If already viewing this thread, don't reopen it.
return;
}
super.viewThread(status);
}
@Override
public void onOpenReblog(int position) {
// there should be no reblogs in the thread but let's implement it to be sure
super.openReblog(statuses.get(position));
}
@Override
public void onExpandedChange(boolean expanded, int position) {
StatusViewData.Concrete newViewData =
new StatusViewData.Builder(statuses.getPairedItem(position))
.setIsExpanded(expanded)
.createStatusViewData();
statuses.setPairedItem(position, newViewData);
adapter.setItem(position, newViewData, false);
updateRevealIcon();
}
@Override
public void onContentHiddenChange(boolean isShowing, int position) {
StatusViewData.Concrete newViewData =
new StatusViewData.Builder(statuses.getPairedItem(position))
.setIsShowingSensitiveContent(isShowing)
.createStatusViewData();
statuses.setPairedItem(position, newViewData);
adapter.setItem(position, newViewData, false);
}
@Override
public void onLoadMore(int position) {
}
@Override
public void onShowReblogs(int position) {
String statusId = statuses.get(position).getId();
Intent intent = AccountListActivity.newIntent(getContext(), AccountListActivity.Type.REBLOGGED, statusId);
((BaseActivity) getActivity()).startActivityWithSlideInAnimation(intent);
}
@Override
public void onShowFavs(int position) {
String statusId = statuses.get(position).getId();
Intent intent = AccountListActivity.newIntent(getContext(), AccountListActivity.Type.FAVOURITED, statusId);
((BaseActivity) getActivity()).startActivityWithSlideInAnimation(intent);
}
@Override
public void onContentCollapsedChange(boolean isCollapsed, int position) {
if (position < 0 || position >= statuses.size()) {
Log.e(TAG, String.format("Tried to access out of bounds status position: %d of %d", position, statuses.size() - 1));
return;
}
StatusViewData.Concrete status = statuses.getPairedItem(position);
if (status == null) {
// Statuses PairedList contains a base type of StatusViewData.Concrete and also doesn't
// check for null values when adding values to it although this doesn't seem to be an issue.
Log.e(TAG, String.format(
"Expected StatusViewData.Concrete, got null instead at position: %d of %d",
position,
statuses.size() - 1
));
return;
}
StatusViewData.Concrete updatedStatus = new StatusViewData.Builder(status)
.setCollapsible(!SmartLengthInputFilter.hasBadRatio(
status.getContent(),
SmartLengthInputFilter.LENGTH_DEFAULT
))
.setCollapsed(isCollapsed)
.createStatusViewData();
statuses.setPairedItem(position, updatedStatus);
recyclerView.post(() -> adapter.setItem(position, updatedStatus, true));
}
@Override
public void onViewTag(String tag) {
super.viewTag(tag);
}
@Override
public void onViewAccount(String id) {
super.viewAccount(id);
}
@Override
public void removeItem(int position) {
if (position == statusIndex) {
//the status got removed, close the activity
getActivity().finish();
}
statuses.remove(position);
adapter.setStatuses(statuses.getPairedCopy());
}
private void removeAllByAccountId(String accountId) {
Status status = null;
if (!statuses.isEmpty()) {
status = statuses.get(statusIndex);
}
// using iterator to safely remove items while iterating
Iterator<Status> iterator = statuses.iterator();
while (iterator.hasNext()) {
Status s = iterator.next();
if (s.getAccount().getId().equals(accountId)) {
iterator.remove();
}
}
statusIndex = statuses.indexOf(status);
if (statusIndex == -1) {
//the status got removed, close the activity
getActivity().finish();
return;
}
adapter.setDetailedStatusPosition(statusIndex);
adapter.setStatuses(statuses.getPairedCopy());
}
private void sendStatusRequest(final String id) {
Call<Status> call = mastodonApi.status(id);
call.enqueue(new Callback<Status>() {
@Override
public void onResponse(@NonNull Call<Status> call, @NonNull Response<Status> response) {
if (response.isSuccessful()) {
int position = setStatus(response.body());
recyclerView.scrollToPosition(position);
} else {
onThreadRequestFailure(id);
}
}
@Override
public void onFailure(@NonNull Call<Status> call, @NonNull Throwable t) {
onThreadRequestFailure(id);
}
});
callList.add(call);
}
private void sendThreadRequest(final String id) {
Call<StatusContext> call = mastodonApi.statusContext(id);
call.enqueue(new Callback<StatusContext>() {
@Override
public void onResponse(@NonNull Call<StatusContext> call, @NonNull Response<StatusContext> response) {
StatusContext context = response.body();
if (response.isSuccessful() && context != null) {
swipeRefreshLayout.setRefreshing(false);
setContext(context.getAncestors(), context.getDescendants());
} else {
onThreadRequestFailure(id);
}
}
@Override
public void onFailure(@NonNull Call<StatusContext> call, @NonNull Throwable t) {
onThreadRequestFailure(id);
}
});
callList.add(call);
}
private void sendCardRequest(final String id) {
Call<Card> call = mastodonApi.statusCard(id);
call.enqueue(new Callback<Card>() {
@Override
public void onResponse(@NonNull Call<Card> call, @NonNull Response<Card> response) {
if (response.isSuccessful()) {
showCard(response.body());
} else {
onThreadRequestFailure(id);
}
}
@Override
public void onFailure(@NonNull Call<Card> call, @NonNull Throwable t) {
Log.e(TAG, "Error fetching status card");
}
});
callList.add(call);
}
private void onThreadRequestFailure(final String id) {
View view = getView();
swipeRefreshLayout.setRefreshing(false);
if (view != null) {
Snackbar.make(view, R.string.error_generic, Snackbar.LENGTH_LONG)
.setAction(R.string.action_retry, v -> {
sendThreadRequest(id);
sendStatusRequest(id);
sendCardRequest(id);
})
.show();
} else {
Log.e(TAG, "Couldn't display thread fetch error message");
}
}
private int setStatus(Status status) {
if (statuses.size() > 0
&& statusIndex < statuses.size()
&& statuses.get(statusIndex).equals(status)) {
// Do not add this status on refresh, it's already in there.
statuses.set(statusIndex, status);
return statusIndex;
}
int i = statusIndex;
statuses.add(i, status);
adapter.setDetailedStatusPosition(i);
StatusViewData.Concrete viewData = statuses.getPairedItem(i);
if (viewData.getCard() == null && card != null) {
viewData = new StatusViewData.Builder(viewData)
.setCard(card)
.createStatusViewData();
}
statuses.setPairedItem(i, viewData);
adapter.addItem(i, viewData);
updateRevealIcon();
return i;
}
private void setContext(List<Status> ancestors, List<Status> descendants) {
Status mainStatus = null;
// In case of refresh, remove old ancestors and descendants first. We'll remove all blindly,
// as we have no guarantee on their order to be the same as before
int oldSize = statuses.size();
if (oldSize > 1) {
mainStatus = statuses.get(statusIndex);
statuses.clear();
adapter.clearItems();
}
// Insert newly fetched ancestors
statusIndex = ancestors.size();
adapter.setDetailedStatusPosition(statusIndex);
statuses.addAll(0, ancestors);
List<StatusViewData.Concrete> ancestorsViewDatas = statuses.getPairedCopy().subList(0, statusIndex);
if (BuildConfig.DEBUG && ancestors.size() != ancestorsViewDatas.size()) {
String error = String.format(Locale.getDefault(),
"Incorrectly got statusViewData sublist." +
" ancestors.size == %d ancestorsViewDatas.size == %d," +
" statuses.size == %d",
ancestors.size(), ancestorsViewDatas.size(), statuses.size());
throw new AssertionError(error);
}
adapter.addAll(0, ancestorsViewDatas);
if (mainStatus != null) {
// In case we needed to delete everything (which is way easier than deleting
// everything except one), re-insert the remaining status here.
statuses.add(statusIndex, mainStatus);
StatusViewData.Concrete viewData = statuses.getPairedItem(statusIndex);
if (viewData.getCard() == null && card != null) {
viewData = new StatusViewData.Builder(viewData)
.setCard(card)
.createStatusViewData();
statuses.setPairedItem(statusIndex, viewData);
}
adapter.addItem(statusIndex, viewData);
}
// Insert newly fetched descendants
statuses.addAll(descendants);
List<StatusViewData.Concrete> descendantsViewData;
descendantsViewData = statuses.getPairedCopy()
.subList(statuses.size() - descendants.size(), statuses.size());
if (BuildConfig.DEBUG && descendants.size() != descendantsViewData.size()) {
String error = String.format(Locale.getDefault(),
"Incorrectly got statusViewData sublist." +
" descendants.size == %d descendantsViewData.size == %d," +
" statuses.size == %d",
descendants.size(), descendantsViewData.size(), statuses.size());
throw new AssertionError(error);
}
adapter.addAll(descendantsViewData);
updateRevealIcon();
}
private void showCard(Card card) {
this.card = card;
if (statusIndex >= 0 && statusIndex < statuses.size()) {
StatusViewData.Concrete newViewData =
new StatusViewData.Builder(statuses.getPairedItem(statusIndex))
.setCard(card)
.createStatusViewData();
statuses.setPairedItem(statusIndex, newViewData);
adapter.setItem(statusIndex, newViewData, true);
}
}
public void clear() {
statuses.clear();
adapter.clear();
}
private void handleFavEvent(FavoriteEvent event) {
Pair<Integer, Status> posAndStatus = findStatusAndPos(event.getStatusId());
if (posAndStatus == null) return;
//noinspection ConstantConditions
boolean favourite = event.getFavourite();
posAndStatus.second.setFavourited(favourite);
if (posAndStatus.second.getReblog() != null) {
posAndStatus.second.getReblog().setFavourited(favourite);
}
StatusViewData.Concrete viewdata = statuses.getPairedItem(posAndStatus.first);
StatusViewData.Builder viewDataBuilder = new StatusViewData.Builder((viewdata));
viewDataBuilder.setFavourited(favourite);
StatusViewData.Concrete newViewData = viewDataBuilder.createStatusViewData();
statuses.setPairedItem(posAndStatus.first, newViewData);
adapter.setItem(posAndStatus.first, newViewData, true);
}
private void handleReblogEvent(ReblogEvent event) {
Pair<Integer, Status> posAndStatus = findStatusAndPos(event.getStatusId());
if (posAndStatus == null) return;
//noinspection ConstantConditions
boolean reblog = event.getReblog();
posAndStatus.second.setReblogged(reblog);
if (posAndStatus.second.getReblog() != null) {
posAndStatus.second.getReblog().setReblogged(reblog);
}
StatusViewData.Concrete viewdata = statuses.getPairedItem(posAndStatus.first);
StatusViewData.Builder viewDataBuilder = new StatusViewData.Builder((viewdata));
viewDataBuilder.setReblogged(reblog);
StatusViewData.Concrete newViewData = viewDataBuilder.createStatusViewData();
statuses.setPairedItem(posAndStatus.first, newViewData);
adapter.setItem(posAndStatus.first, newViewData, true);
}
private void handleStatusComposedEvent(StatusComposedEvent event) {
Status eventStatus = event.getStatus();
if (eventStatus.getInReplyToId() == null) return;
if (eventStatus.getInReplyToId().equals(thisThreadsStatusId)) {
insertStatus(eventStatus, statuses.size());
} else {
// If new status is a reply to some status in the thread, insert new status after it
// We only check statuses below main status, ones on top don't belong to this thread
for (int i = statusIndex; i < statuses.size(); i++) {
Status status = statuses.get(i);
if (eventStatus.getInReplyToId().equals(status.getId())) {
insertStatus(eventStatus, i + 1);
break;
}
}
}
}
private void insertStatus(Status status, int at) {
statuses.add(at, status);
adapter.addItem(at, statuses.getPairedItem(at));
}
private void handleStatusDeletedEvent(StatusDeletedEvent event) {
Pair<Integer, Status> posAndStatus = findStatusAndPos(event.getStatusId());
if (posAndStatus == null) return;
@SuppressWarnings("ConstantConditions")
int pos = posAndStatus.first;
statuses.remove(pos);
adapter.removeItem(pos);
}
@Nullable
private Pair<Integer, Status> findStatusAndPos(@NonNull String statusId) {
for (int i = 0; i < statuses.size(); i++) {
if (statusId.equals(statuses.get(i).getId())) {
return new Pair<>(i, statuses.get(i));
}
}
return null;
}
private void updateRevealIcon() {
ViewThreadActivity activity = ((ViewThreadActivity) getActivity());
if (activity == null) return;
boolean hasAnyWarnings = false;
// Statuses are updated from the main thread so nothing should change while iterating
for (int i = 0; i < statuses.size(); i++) {
if (!TextUtils.isEmpty(statuses.get(i).getSpoilerText())) {
hasAnyWarnings = true;
break;
}
}
if (!hasAnyWarnings) {
activity.setRevealButtonState(ViewThreadActivity.REVEAL_BUTTON_HIDDEN);
return;
}
activity.setRevealButtonState(allExpanded() ? ViewThreadActivity.REVEAL_BUTTON_HIDE :
ViewThreadActivity.REVEAL_BUTTON_REVEAL);
}
}