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Fix some ordering problems with conversation data loading.

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This commit is contained in:
Greyson Parrelli 2020-05-12 10:57:40 -04:00 committed by Alex Hart
parent b8df90531f
commit ed0825112d
3 changed files with 69 additions and 21 deletions
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31
app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationDataSource.java
View File

@ -12,6 +12,7 @@ import org.thoughtcrime.securesms.database.DatabaseFactory;
import org.thoughtcrime.securesms.database.MmsSmsDatabase;
import org.thoughtcrime.securesms.database.model.MessageRecord;
import org.thoughtcrime.securesms.logging.Log;
import org.thoughtcrime.securesms.util.Util;
import java.util.ArrayList;
import java.util.List;
@ -23,12 +24,14 @@ class ConversationDataSource extends PositionalDataSource<MessageRecord> {
private static final String TAG = Log.tag(ConversationDataSource.class);
private final Context context;
private final long threadId;
private final Context context;
private final long threadId;
private final DataUpdatedCallback dataUpdateCallback;
private ConversationDataSource(@NonNull Context context, long threadId) {
this.context = context;
this.threadId = threadId;
private ConversationDataSource(@NonNull Context context, long threadId, @NonNull DataUpdatedCallback dataUpdateCallback) {
this.context = context;
this.threadId = threadId;
this.dataUpdateCallback = dataUpdateCallback;
ContentObserver contentObserver = new ContentObserver(null) {
@Override
@ -56,6 +59,8 @@ class ConversationDataSource extends PositionalDataSource<MessageRecord> {
}
callback.onResult(records, params.requestedStartPosition, db.getConversationCount(threadId));
Util.runOnMain(dataUpdateCallback::onDataUpdated);
Log.d(TAG, "[Initial Load] " + (System.currentTimeMillis() - start) + " ms" + (isInvalid() ? " -- invalidated" : ""));
}
@ -74,22 +79,30 @@ class ConversationDataSource extends PositionalDataSource<MessageRecord> {
}
callback.onResult(records);
Util.runOnMain(dataUpdateCallback::onDataUpdated);
Log.d(TAG, "[Update] " + (System.currentTimeMillis() - start) + " ms" + (isInvalid() ? " -- invalidated" : ""));
}
interface DataUpdatedCallback {
void onDataUpdated();
}
static class Factory extends DataSource.Factory<Integer, MessageRecord> {
private final Context context;
private final long threadId;
private final Context context;
private final long threadId;
private final DataUpdatedCallback callback;
Factory(Context context, long threadId) {
Factory(Context context, long threadId, @NonNull DataUpdatedCallback callback) {
this.context = context;
this.threadId = threadId;
this.callback = callback;
}
@Override
public @NonNull DataSource<Integer, MessageRecord> create() {
return new ConversationDataSource(context, threadId);
return new ConversationDataSource(context, threadId, callback);
}
}
}

15
app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationFragment.java
View File

@ -864,6 +864,8 @@ public class ConversationFragment extends Fragment {
}
private void presentConversationMetadata(@NonNull ConversationData conversation) {
Log.d(TAG, "presentConversationMetadata()");
ConversationAdapter adapter = getListAdapter();
if (adapter == null) {
return;
@ -946,9 +948,18 @@ public class ConversationFragment extends Fragment {
private void moveToMessagePosition(int position, @Nullable Runnable onMessageNotFound) {
if (position >= 0) {
list.scrollToPosition(position);
getListAdapter().pulseHighlightItem(position);
if (getListAdapter() == null || getListAdapter().getItem(position) == null) {
Log.i(TAG, "[moveToMessagePosition] Position " + position + " not currently populated. Scheduling a jump.");
conversationViewModel.scheduleForNextMessageUpdate(() -> {
list.scrollToPosition(position);
getListAdapter().pulseHighlightItem(position);
});
} else {
getListAdapter().pulseHighlightItem(position);
}
} else {
Log.w(TAG, "Tried to navigate to message, but it wasn't found.");
Log.w(TAG, "[moveToMessagePosition] Tried to navigate to message, but it wasn't found.");
if (onMessageNotFound != null) {
onMessageNotFound.run();
}

44
app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationViewModel.java
View File

@ -3,8 +3,11 @@ package org.thoughtcrime.securesms.conversation;
import android.app.Application;
import androidx.annotation.NonNull;
import androidx.arch.core.util.Function;
import androidx.lifecycle.LiveData;
import androidx.lifecycle.MediatorLiveData;
import androidx.lifecycle.MutableLiveData;
import androidx.lifecycle.Observer;
import androidx.lifecycle.Transformations;
import androidx.lifecycle.ViewModel;
import androidx.lifecycle.ViewModelProvider;
@ -17,9 +20,13 @@ import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
import org.thoughtcrime.securesms.logging.Log;
import org.thoughtcrime.securesms.mediasend.Media;
import org.thoughtcrime.securesms.mediasend.MediaRepository;
import org.thoughtcrime.securesms.util.Util;
import org.thoughtcrime.securesms.util.concurrent.SignalExecutors;
import org.whispersystems.libsignal.util.Pair;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
class ConversationViewModel extends ViewModel {
@ -32,8 +39,9 @@ class ConversationViewModel extends ViewModel {
private final MutableLiveData<Long> threadId;
private final LiveData<PagedList<MessageRecord>> messages;
private final LiveData<ConversationData> conversationMetadata;
private final List<Runnable> onNextMessageLoad;
private int jumpToPosition;
private int jumpToPosition;
private ConversationViewModel() {
this.context = ApplicationDependencies.getApplication();
@ -41,21 +49,27 @@ class ConversationViewModel extends ViewModel {
this.conversationRepository = new ConversationRepository();
this.recentMedia = new MutableLiveData<>();
this.threadId = new MutableLiveData<>();
this.onNextMessageLoad = new CopyOnWriteArrayList<>();
messages = Transformations.switchMap(threadId, thread -> {
DataSource.Factory<Integer, MessageRecord> factory = new ConversationDataSource.Factory(context, thread);
LiveData<Pair<Long, PagedList<MessageRecord>>> messagesForThreadId = Transformations.switchMap(threadId, thread -> {
DataSource.Factory<Integer, MessageRecord> factory = new ConversationDataSource.Factory(context, thread, this::onMessagesUpdated);
PagedList.Config config = new PagedList.Config.Builder()
.setPageSize(25)
.setInitialLoadSizeHint(25)
.build();
return new LivePagedListBuilder<>(factory, config).setFetchExecutor(SignalExecutors.BOUNDED)
.setInitialLoadKey(Math.max(jumpToPosition, 0))
.build();
return Transformations.map(new LivePagedListBuilder<>(factory, config).setFetchExecutor(SignalExecutors.BOUNDED)
.setInitialLoadKey(Math.max(jumpToPosition, 0))
.build(),
input -> new Pair<>(thread, input));
});
conversationMetadata = Transformations.switchMap(threadId, thread -> {
LiveData<ConversationData> data = conversationRepository.getConversationData(thread, jumpToPosition);
this.messages = Transformations.map(messagesForThreadId, Pair::second);
LiveData<Long> threadIdForLoadedMessages = Transformations.distinctUntilChanged(Transformations.map(messagesForThreadId, Pair::first));
conversationMetadata = Transformations.switchMap(threadIdForLoadedMessages, m -> {
LiveData<ConversationData> data = conversationRepository.getConversationData(m, jumpToPosition);
jumpToPosition = -1;
return data;
});
@ -92,6 +106,18 @@ class ConversationViewModel extends ViewModel {
return conversationMetadata.getValue() != null ? conversationMetadata.getValue().getLastSeenPosition() : 0;
}
void scheduleForNextMessageUpdate(@NonNull Runnable runnable) {
onNextMessageLoad.add(runnable);
}
private void onMessagesUpdated() {
for (Runnable runnable : onNextMessageLoad) {
runnable.run();
}
onNextMessageLoad.clear();
}
static class Factory extends ViewModelProvider.NewInstanceFactory {
@Override
public @NonNull<T extends ViewModel> T create(@NonNull Class<T> modelClass) {
@ -99,6 +125,4 @@ class ConversationViewModel extends ViewModel {
return modelClass.cast(new ConversationViewModel());
}
}
}