TrackListRVAdapter.java

package net.osmtracker.activity;

import android.content.Context;
import android.database.Cursor;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.graphics.Color;
import android.util.TypedValue;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import net.osmtracker.R;
import net.osmtracker.db.TracklistAdapter;
import net.osmtracker.db.TrackContentProvider;

public class TrackListRVAdapter extends RecyclerView.Adapter<TrackListRVAdapter.TrackItemVH> {

    private static final String TAG = TrackListRVAdapter.class.getSimpleName();

    private final TracklistAdapter cursorAdapter;
    private final Context context;

    private final TrackListRecyclerViewAdapterListener mHandler;

    public TrackListRVAdapter(Context context, Cursor cursor,
                              TrackListRecyclerViewAdapterListener handler) {
        this.context = context;
        this.cursorAdapter = new TracklistAdapter(context, cursor);
        this.mHandler = handler;
    }

    public TracklistAdapter getCursorAdapter() {
        return cursorAdapter;
    }

    public interface TrackListRecyclerViewAdapterListener {
        default void onClick(long trackId) {};

        void onCreateContextMenu(ContextMenu contextMenu, View view,
                                 ContextMenu.ContextMenuInfo contextMenuInfo, long trackId);
	default void onClick(TrackItemVH item, long trackId) {
	    onClick(trackId);
	}
	default void initializeItem(TrackItemVH item, long trackId) {
	}
    }

    /**
     * Provide a reference to the type of views
     */
    public class TrackItemVH extends RecyclerView.ViewHolder
            implements View.OnClickListener, View.OnCreateContextMenuListener{

        private final TextView vId;
        private final TextView vNameOrStartDate;
        private final TextView vWps;
        private final TextView vTps;
		private final TextView vNotesCount;
        private final ImageView vStatus;
        private final ImageView vUploadStatus;

        public TrackItemVH(View view) {
            super(view);

            vId = (TextView) view.findViewById(R.id.trackmgr_item_id);
            vNameOrStartDate = (TextView) view.findViewById(R.id.trackmgr_item_nameordate);
            vWps = (TextView) view.findViewById(R.id.trackmgr_item_wps);
            vTps = (TextView) view.findViewById(R.id.trackmgr_item_tps);
			vNotesCount = view.findViewById(R.id.trackmgr_item_notes_count);
            vStatus = (ImageView) view.findViewById(R.id.trackmgr_item_statusicon);
            vUploadStatus = (ImageView) view.findViewById(R.id.trackmgr_item_upload_statusicon);

            // listeners
            view.setOnClickListener(this);
            view.setOnCreateContextMenuListener(this);
        }

        public TextView getvId() {
            return vId;
        }

        public TextView getvNameOrStartDate() {
            return vNameOrStartDate;
        }

        public TextView getvWps() {
            return vWps;
        }

        public TextView getvTps() {
            return vTps;
        }

        public ImageView getvStatus() {
            return vStatus;
        }

        public ImageView getvUploadStatus() {
            return vUploadStatus;
        }

        /**
         * This gets called by the child views during a click.
         *
         * @param v The View that was clicked
         */
        @Override
        public void onClick(View v) {
            long trackId = Long.parseLong(getvId().getText().toString());
            mHandler.onClick(this, trackId);
        }

	public void activate(boolean state) {
	    if(state)
		itemView.setBackgroundColor(Color.RED);
	    else {
		TypedValue outValue = new TypedValue();
		itemView
		    .getContext()
		    .getTheme()
		    .resolveAttribute(android.R.attr.selectableItemBackground,
				      outValue, true);
		itemView.setBackgroundResource(outValue.resourceId);
	    }
	}

        @Override
        public void onCreateContextMenu(ContextMenu contextMenu, View view, ContextMenu.ContextMenuInfo contextMenuInfo) {
            long trackId = Long.parseLong(getvId().getText().toString());
            mHandler.onCreateContextMenu(contextMenu, view, contextMenuInfo, trackId);
        }
    }


    @NonNull
    @Override
    public TrackItemVH onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        return new TrackItemVH(LayoutInflater.from(parent.getContext())
                .inflate(R.layout.tracklist_item,
                        parent, false));
    }

    // Create new views (invoked by the layout manager)
    @Override
    public void onBindViewHolder(@NonNull TrackItemVH holder, int position) {
        // Get element from database at this position and replace the
        // contents of the view with that element

        // Passing the binding operation to cursor loader
        Cursor cursor = cursorAdapter.getCursor();
        cursor.moveToPosition(position);
        cursorAdapter.bindView(holder.itemView, context, cursor);
        mHandler.initializeItem(holder,
                                cursor.getLong(cursor.getColumnIndex(TrackContentProvider.Schema.COL_ID)));
    }

    @Override
    public int getItemCount() {
        return cursorAdapter.getCount();
    }


}