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package it.niedermann.owncloud.notes.main.items.list;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.util.Log;
import android.view.View;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.lifecycle.LifecycleOwner;
import androidx.lifecycle.LiveData;
import androidx.recyclerview.selection.SelectionTracker;
import androidx.recyclerview.widget.ItemTouchHelper;
import androidx.recyclerview.widget.RecyclerView;
import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
import com.google.android.material.snackbar.Snackbar;
import it.niedermann.owncloud.notes.R;
import it.niedermann.owncloud.notes.branding.BrandedSnackbar;
import it.niedermann.owncloud.notes.main.MainViewModel;
import it.niedermann.owncloud.notes.main.items.ItemAdapter;
import it.niedermann.owncloud.notes.main.items.NoteViewHolder;
import it.niedermann.owncloud.notes.main.items.section.SectionViewHolder;
import it.niedermann.owncloud.notes.persistence.entity.Note;
public class NotesListViewItemTouchHelper extends ItemTouchHelper {
private static final String TAG = NotesListViewItemTouchHelper.class.getSimpleName();
private static final int UNDO_DURATION = 12_000;
public NotesListViewItemTouchHelper(
@NonNull Context context,
@NonNull MainViewModel mainViewModel,
@NonNull LifecycleOwner lifecycleOwner,
@NonNull SelectionTracker<Long> tracker,
@NonNull ItemAdapter adapter,
@NonNull SwipeRefreshLayout swipeRefreshLayout,
@NonNull View view,
boolean gridView) {
super(new SimpleCallback(0, ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT) {
private boolean swipeRefreshLayoutEnabled;
@Override
public boolean onMove(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, @NonNull RecyclerView.ViewHolder target) {
return false;
}
/**
* Disable swipe on sections and if grid view is enabled
*
* @param recyclerView RecyclerView
* @param viewHolder RecyclerView.ViewHolder
* @return 0 if viewHolder is section or grid view is enabled, otherwise super()
*/
@Override
public int getSwipeDirs(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder) {
if (gridView || viewHolder instanceof SectionViewHolder) return 0;
return super.getSwipeDirs(recyclerView, viewHolder);
}
/**
* Delete note if note is swiped to left or right
*
* @param viewHolder RecyclerView.ViewHoler
* @param direction int
*/
@SuppressLint("WrongConstant")
@Override
public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
switch (direction) {
case ItemTouchHelper.LEFT:
viewHolder.setIsRecyclable(false);
final var dbNoteWithoutContent = (Note) adapter.getItem(viewHolder.getLayoutPosition());
final var dbNoteLiveData = mainViewModel.getFullNote$(dbNoteWithoutContent.getId());
dbNoteLiveData.observe(lifecycleOwner, (dbNote) -> {
dbNoteLiveData.removeObservers(lifecycleOwner);
tracker.deselect(dbNote.getId());
final var deleteLiveData = mainViewModel.deleteNoteAndSync(dbNote.getId());
deleteLiveData.observe(lifecycleOwner, (next) -> deleteLiveData.removeObservers(lifecycleOwner));
Log.v(TAG, "Item deleted through swipe ----------------------------------------------");
BrandedSnackbar.make(view, context.getString(R.string.action_note_deleted, dbNote.getTitle()), UNDO_DURATION)
.setAction(R.string.action_undo, (View v) -> {
final var undoLiveData = mainViewModel.addNoteAndSync(dbNote);
undoLiveData.observe(lifecycleOwner, (o) -> undoLiveData.removeObservers(lifecycleOwner));
BrandedSnackbar.make(view, context.getString(R.string.action_note_restored, dbNote.getTitle()), Snackbar.LENGTH_SHORT)
.show();
})
.show();
});
break;
case ItemTouchHelper.RIGHT:
viewHolder.setIsRecyclable(false);
final var adapterNote = (Note) adapter.getItem(viewHolder.getLayoutPosition());
final var toggleLiveData = mainViewModel.toggleFavoriteAndSync(adapterNote.getId());
toggleLiveData.observe(lifecycleOwner, (next) -> toggleLiveData.removeObservers(lifecycleOwner));
break;
default:
//NoOp
}
}
@Override
public void onChildDraw(@NonNull Canvas c, @NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
final var noteViewHolder = (NoteViewHolder) viewHolder;
// show swipe icon on the side
noteViewHolder.showSwipe(dX > 0);
// move only swipeable part of item (not leave-behind)
getDefaultUIUtil().onDraw(c, recyclerView, noteViewHolder.getNoteSwipeable(), dX, dY, actionState, isCurrentlyActive);
}
@Override
public void onSelectedChanged(@Nullable RecyclerView.ViewHolder viewHolder, int actionState) {
if (actionState == ACTION_STATE_SWIPE) {
Log.i(TAG, "Start swiping, disable swipeRefreshLayout");
swipeRefreshLayoutEnabled = swipeRefreshLayout.isEnabled();
swipeRefreshLayout.setEnabled(false);
if (viewHolder != null) {
adapter.setSwipedPosition(viewHolder.getLayoutPosition());
}
}
super.onSelectedChanged(viewHolder, actionState);
}
@Override
public void clearView(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder) {
Log.i(TAG, "End swiping, resetting swipeRefreshLayout state");
swipeRefreshLayout.setEnabled(swipeRefreshLayoutEnabled);
getDefaultUIUtil().clearView(((NoteViewHolder) viewHolder).getNoteSwipeable());
adapter.setSwipedPosition(null);
}
@Override
public float getSwipeEscapeVelocity(float defaultValue) {
return defaultValue * 3;
}
});
}
}
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