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author | Scott Jackson <daneren2005@gmail.com> | 2015-09-16 07:49:10 -0700 |
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committer | Scott Jackson <daneren2005@gmail.com> | 2015-09-16 07:49:10 -0700 |
commit | fa285723cd21e4799990bef0726d71ef96001e5c (patch) | |
tree | 5dc8c64d7720163609cf6d9f9115930e103a3566 /app/src | |
parent | 7df08f3d1ac3d098260a99871b1b03b273111bc0 (diff) | |
download | dsub-fa285723cd21e4799990bef0726d71ef96001e5c.tar.gz dsub-fa285723cd21e4799990bef0726d71ef96001e5c.tar.bz2 dsub-fa285723cd21e4799990bef0726d71ef96001e5c.zip |
Fix for issues with drag/drop
Diffstat (limited to 'app/src')
-rw-r--r-- | app/src/main/java/github/daneren2005/dsub/util/DownloadFileItemHelperCallback.java | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/app/src/main/java/github/daneren2005/dsub/util/DownloadFileItemHelperCallback.java b/app/src/main/java/github/daneren2005/dsub/util/DownloadFileItemHelperCallback.java new file mode 100644 index 00000000..4074fece --- /dev/null +++ b/app/src/main/java/github/daneren2005/dsub/util/DownloadFileItemHelperCallback.java @@ -0,0 +1,112 @@ +package github.daneren2005.dsub.util; + +import android.support.v7.widget.RecyclerView; +import android.support.v7.widget.helper.ItemTouchHelper; + +import org.eclipse.jetty.util.ArrayQueue; + +import java.util.Queue; + +import github.daneren2005.dsub.adapter.SectionAdapter; +import github.daneren2005.dsub.fragments.SubsonicFragment; +import github.daneren2005.dsub.service.DownloadFile; +import github.daneren2005.dsub.service.DownloadService; +import github.daneren2005.dsub.view.SongView; +import github.daneren2005.dsub.view.UpdateView; + +public class DownloadFileItemHelperCallback extends ItemTouchHelper.SimpleCallback { + private SubsonicFragment fragment; + private boolean mainList; + + private BackgroundTask pendingTask = null; + private Queue pendingOperations = new ArrayQueue(); + + public DownloadFileItemHelperCallback(SubsonicFragment fragment, boolean mainList) { + super(ItemTouchHelper.UP | ItemTouchHelper.DOWN, ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT); + this.fragment = fragment; + this.mainList = mainList; + } + + @Override + public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder fromHolder, RecyclerView.ViewHolder toHolder) { + int from = fromHolder.getAdapterPosition(); + int to = toHolder.getAdapterPosition(); + getSectionAdapter().notifyItemMoved(from, to); + + synchronized (pendingOperations) { + pendingOperations.add(new Pair<>(from, to)); + updateDownloadService(); + } + return true; + } + + @Override + public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) { + SongView songView = (SongView) ((UpdateView.UpdateViewHolder) viewHolder).getUpdateView(); + DownloadFile downloadFile = songView.getDownloadFile(); + + getSectionAdapter().removeItem(downloadFile); + synchronized (pendingOperations) { + pendingOperations.add(downloadFile); + updateDownloadService(); + } + } + + public DownloadService getDownloadService() { + return fragment.getDownloadService(); + } + public SectionAdapter getSectionAdapter() { + return fragment.getCurrentAdapter(); + } + + private void updateDownloadService() { + if(pendingTask == null) { + final DownloadService downloadService = getDownloadService(); + if(downloadService == null) { + return; + } + + pendingTask = new SilentBackgroundTask<Void>(downloadService) { + @Override + protected Void doInBackground() throws Throwable { + boolean running = true; + while(running) { + Object nextOperation = null; + synchronized (pendingOperations) { + if(!pendingOperations.isEmpty()) { + nextOperation = pendingOperations.remove(); + } + } + + if(nextOperation != null) { + if(nextOperation instanceof Pair) { + Pair<Integer, Integer> swap = (Pair) nextOperation; + downloadService.swap(mainList, swap.getFirst(), swap.getSecond()); + } else if(nextOperation instanceof DownloadFile) { + DownloadFile downloadFile = (DownloadFile) nextOperation; + if(mainList) { + downloadService.remove(downloadFile); + } else { + downloadService.removeBackground(downloadFile); + } + } + } else { + running = false; + } + } + + synchronized (pendingOperations) { + pendingTask = null; + + // Start a task if this is non-empty. Means someone added while we were running operations + if(!pendingOperations.isEmpty()) { + updateDownloadService(); + } + } + return null; + } + }; + pendingTask.execute(); + } + } +} |