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[android] Let AttachmentCreator return same LiveData after configuration changes

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This commit is contained in:
Torsten Grote
2019-04-14 12:31:31 -03:00
parent 7358091699
commit 9d9bc4ca84
4 changed files with 44 additions and 36 deletions
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59
briar-android/src/main/java/org/briarproject/briar/android/attachment/AttachmentCreator.java
View File

@@ -29,7 +29,6 @@ import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.Executor;
import java.util.logging.Logger;
import static java.util.Objects.requireNonNull;
import static java.util.logging.Level.WARNING;
import static java.util.logging.Logger.getLogger;
import static org.briarproject.bramble.util.LogUtils.logException;
@@ -46,6 +45,7 @@ public class AttachmentCreator {
private final MessagingManager messagingManager;
private final AttachmentRetriever retriever;
// store unsent items separately, as LiveData might not return latest value
private final Map<Uri, AttachmentItem> unsentItems =
new ConcurrentHashMap<>();
private final Map<Uri, MutableLiveData<AttachmentItemResult>>
@@ -66,32 +66,38 @@ public class AttachmentCreator {
@UiThread
public AttachmentResult storeAttachments(GroupId groupId,
Collection<Uri> uris) {
if (task != null && !isStoring()) throw new AssertionError();
Collection<Uri> uris, boolean restart) {
List<LiveData<AttachmentItemResult>> itemResults = new ArrayList<>();
List<Uri> urisToStore = new ArrayList<>();
for (Uri uri : uris) {
MutableLiveData<AttachmentItemResult> liveData =
new MutableLiveData<>();
itemResults.add(liveData);
liveDataResult.put(uri, liveData);
if (unsentItems.containsKey(uri)) {
// This can happen due to configuration changes.
// So don't create a new attachment, if we have one already.
AttachmentItem item = requireNonNull(unsentItems.get(uri));
AttachmentItemResult result =
new AttachmentItemResult(uri, item);
liveData.setValue(result);
} else {
urisToStore.add(uri);
if (restart) {
// This can happen due to configuration changes.
// So don't create new attachments, if we have (or creating) them.
// Instead, re-subscribe to the existing LiveData.
if (task == null || isNotStoring()) throw new AssertionError();
for (Uri uri : uris) {
// We don't want to expose mutable(!) LiveData
LiveData<AttachmentItemResult> liveData =
liveDataResult.get(uri);
if (liveData == null) throw new IllegalStateException();
itemResults.add(liveData);
}
if (liveDataFinished == null) throw new IllegalStateException();
} else {
if (task != null && isNotStoring()) throw new AssertionError();
List<Uri> urisToStore = new ArrayList<>();
for (Uri uri : uris) {
urisToStore.add(uri);
MutableLiveData<AttachmentItemResult> liveData =
new MutableLiveData<>();
liveDataResult.put(uri, liveData);
itemResults.add(liveData);
}
boolean needsSize = uris.size() == 1;
task = new AttachmentCreationTask(messagingManager,
app.getContentResolver(), this, groupId, urisToStore,
needsSize);
ioExecutor.execute(() -> task.storeAttachments());
liveDataFinished = new MutableLiveData<>();
}
boolean needsSize = uris.size() == 1;
task = new AttachmentCreationTask(messagingManager,
app.getContentResolver(), this, groupId, urisToStore,
needsSize);
ioExecutor.execute(() -> task.storeAttachments());
liveDataFinished = new MutableLiveData<>();
return new AttachmentResult(itemResults, liveDataFinished);
}
@@ -185,6 +191,7 @@ public class AttachmentCreator {
@UiThread
public void deleteUnsentAttachments() {
// Make a copy for the IoExecutor as we clear the unsentItems soon
List<AttachmentItem> itemsToDelete =
new ArrayList<>(unsentItems.values());
ioExecutor.execute(() -> {
@@ -198,8 +205,8 @@ public class AttachmentCreator {
});
}
private boolean isStoring() {
return liveDataFinished != null;
private boolean isNotStoring() {
return liveDataFinished == null;
}
}

2
briar-android/src/main/java/org/briarproject/briar/android/attachment/AttachmentManager.java
View File

@@ -11,7 +11,7 @@ import java.util.List;
@UiThread
public interface AttachmentManager {
AttachmentResult storeAttachments(Collection<Uri> uri);
AttachmentResult storeAttachments(Collection<Uri> uri, boolean restart);
List<AttachmentHeader> getAttachmentHeadersForSending();

8
briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationViewModel.java
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@@ -150,8 +150,7 @@ public class ConversationViewModel extends AndroidViewModel
contact.postValue(c);
logDuration(LOG, "Loading contact", start);
start = now();
messagingGroupId =
messagingManager.getConversationId(contactId);
messagingGroupId = messagingManager.getContactGroup(c).getId();
logDuration(LOG, "Load conversation GroupId", start);
start = now();
checkFeaturesAndOnboarding(contactId);
@@ -197,10 +196,11 @@ public class ConversationViewModel extends AndroidViewModel
@Override
@UiThread
public AttachmentResult storeAttachments(Collection<Uri> uris) {
public AttachmentResult storeAttachments(Collection<Uri> uris,
boolean restart) {
GroupId groupId = messagingGroupId;
if (groupId == null) throw new IllegalStateException();
return attachmentCreator.storeAttachments(groupId, uris);
return attachmentCreator.storeAttachments(groupId, uris, restart);
}
@Override

11
briar-android/src/main/java/org/briarproject/briar/android/view/TextAttachmentController.java
View File

@@ -153,17 +153,17 @@ public class TextAttachmentController extends TextSendController
if (loadingUris || !imageUris.isEmpty()) throw new AssertionError();
if (resultData.getData() != null) {
imageUris.add(resultData.getData());
onNewUris();
onNewUris(false);
} else if (SDK_INT >= 18 && resultData.getClipData() != null) {
ClipData clipData = resultData.getClipData();
for (int i = 0; i < clipData.getItemCount(); i++) {
imageUris.add(clipData.getItemAt(i).getUri());
}
onNewUris();
onNewUris(false);
}
}
private void onNewUris() {
private void onNewUris(boolean restart) {
if (imageUris.isEmpty()) return;
if (loadingUris) throw new AssertionError();
loadingUris = true;
@@ -172,7 +172,8 @@ public class TextAttachmentController extends TextSendController
List<ImagePreviewItem> items = ImagePreviewItem.fromUris(imageUris);
imagePreview.showPreview(items);
// store attachments and show preview when successful
AttachmentResult result = attachmentManager.storeAttachments(imageUris);
AttachmentResult result =
attachmentManager.storeAttachments(imageUris, restart);
for (LiveData<AttachmentItemResult> liveData : result
.getItemResults()) {
onLiveDataReturned(liveData);
@@ -240,7 +241,7 @@ public class TextAttachmentController extends TextSendController
SavedState state = (SavedState) inState;
if (!imageUris.isEmpty()) throw new AssertionError();
if (state.imageUris != null) imageUris.addAll(state.imageUris);
onNewUris();
onNewUris(true);
return state.getSuperState();
}