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Code Issues Projects Releases Wiki Activity

Sort headers and eagerly load text of latest message.

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This commit is contained in:
akwizgran
2018-11-14 15:01:54 +00:00
parent 7866037d02
commit 78a8ae6b8e
1 changed files with 20 additions and 1 deletions
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21
briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationActivity.java
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@@ -96,6 +96,7 @@ import static android.support.v4.view.ViewCompat.setTransitionName;
import static android.support.v7.util.SortedList.INVALID_POSITION;
import static android.widget.Toast.LENGTH_SHORT;
import static java.util.Collections.emptyList;
import static java.util.Collections.sort;
import static java.util.Objects.requireNonNull;
import static java.util.logging.Level.INFO;
import static java.util.logging.Level.WARNING;
@@ -330,7 +331,25 @@ public class ConversationActivity extends BriarActivity
Collection<ConversationMessageHeader> headers =
conversationManager.getMessageHeaders(contactId);
logDuration(LOG, "Loading messages", start);
displayMessages(revision, headers);
// Sort headers by timestamp in *descending* order
List<ConversationMessageHeader> sorted =
new ArrayList<>(headers);
sort(sorted, (a, b) ->
Long.compare(b.getTimestamp(), a.getTimestamp()));
// Eagerly load the text of the latest message to avoid jumping
for (ConversationMessageHeader h : sorted) {
if (h instanceof PrivateMessageHeader) {
MessageId id = h.getId();
String text = textCache.get(id);
if (text == null) {
LOG.info("Eagerly loading text of latest message");
text = messagingManager.getMessageText(id);
textCache.put(id, text);
}
break;
}
}
displayMessages(revision, sorted);
} catch (NoSuchContactException e) {
finishOnUiThread();
} catch (DbException e) {