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Fixed a small bug in the TrackListScrollCache's state management.

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This commit is contained in:
casey langen 2017-02-16 17:01:38 -08:00
parent c8497f9524
commit 7905dc5e34
1 changed files with 18 additions and 9 deletions
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27
src/musikdroid/app/src/main/java/io/casey/musikcube/remote/TrackListScrollCache.java
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@ -21,6 +21,7 @@ public class TrackListScrollCache<TrackType> {
private int scrollState = RecyclerView.SCROLL_STATE_IDLE;
private int queryOffset = -1, queryLimit = -1;
private int initialPosition = -1;
boolean connected = false;
private static class CacheEntry<TrackType> {
TrackType value;
@ -55,21 +56,24 @@ public class TrackListScrollCache<TrackType> {
}
public void requery() {
cancelMessages();
if (connected) {
cancelMessages();
final SocketMessage message = queryFactory.getRequeryMessage();
final SocketMessage message = queryFactory.getRequeryMessage();
wss.send(message, this.client, (SocketMessage response) -> {
setCount(response.getIntOption(Messages.Key.COUNT, 0));
wss.send(message, this.client, (SocketMessage response) -> {
setCount(response.getIntOption(Messages.Key.COUNT, 0));
if (initialPosition != -1) {
recyclerView.scrollToPosition(initialPosition);
initialPosition = -1;
}
});
if (initialPosition != -1) {
recyclerView.scrollToPosition(initialPosition);
initialPosition = -1;
}
});
}
}
public void pause() {
connected = false;
this.recyclerView.removeOnScrollListener(scrollListener);
this.wss.removeClient(this.client);
}
@ -77,6 +81,7 @@ public class TrackListScrollCache<TrackType> {
public void resume() {
this.recyclerView.addOnScrollListener(scrollListener);
this.wss.addClient(this.client);
connected = true;
}
public void setInitialPosition(int initialIndex) {
@ -118,6 +123,10 @@ public class TrackListScrollCache<TrackType> {
}
private void getPageAround(int index) {
if (!connected) {
return;
}
if (index >= queryOffset && index <= queryOffset + queryLimit) {
return; /* already in flight */
}