PlaylistSongAdapter.java

/* This file is part of the Android Clementine Remote.
 * Copyright (C) 2013, Andreas Muttscheller <asfa194@gmail.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package de.qspool.clementineremote.ui.adapter;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.ArrayAdapter;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.TextView;

import java.util.LinkedList;
import java.util.List;

import de.qspool.clementineremote.App;
import de.qspool.clementineremote.R;
import de.qspool.clementineremote.SharedPreferencesKeys;
import de.qspool.clementineremote.backend.player.MySong;

/**
 * Class is used for displaying the song data
 */
public class PlaylistSongAdapter extends ArrayAdapter<MySong> implements Filterable {

    private static final int UNKNWON_TRACK_NUMBER = -1;

    private Context mContext;

    private List<MySong> mData;

    private List<MySong> mOrigData;

    private Filter mFilter;

    private boolean mShowTrackNo = true;

    public PlaylistSongAdapter(Context context, int resource,
            List<MySong> data) {
        super(context, resource, data);
        mContext = context;
        mData = data;
        mOrigData = new LinkedList<>(data);

        SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(context);
        mShowTrackNo = sharedPref.getBoolean(SharedPreferencesKeys.SP_SHOW_TRACKNO, true);
    }

    public void updateSongs(List<MySong> data) {
        mOrigData = new LinkedList<>(data);
        notifyDataSetChanged();
    }

    @Override
    public Filter getFilter() {
        if (mFilter == null) {
            mFilter = new CustomFilter();
        }
        return mFilter;
    }

    @SuppressLint("SetTextI18n")
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        PlaylistViewHolder playlistViewHolder;

        if (convertView == null) {
            convertView = ((Activity) mContext).getLayoutInflater()
                    .inflate(R.layout.item_playlist, parent, false);

            playlistViewHolder = new PlaylistViewHolder();

            playlistViewHolder.artist = (TextView) convertView.findViewById(R.id.tvRowArtist);
            playlistViewHolder.title = (TextView) convertView.findViewById(R.id.tvRowTitle);
            playlistViewHolder.length = (TextView) convertView.findViewById(R.id.tvRowLength);
            playlistViewHolder.trackNo = (TextView) convertView.findViewById(R.id.tvTrackNo);

            convertView.setTag(playlistViewHolder);
        } else {
            playlistViewHolder = (PlaylistViewHolder) convertView.getTag();
        }

        if (App.Clementine.getCurrentSong() != null
                && App.Clementine.getCurrentSong().equals(mData.get(position))) {
            convertView.setBackgroundResource(R.drawable.listitem_orange);
        } else {
            convertView.setBackgroundResource(R.drawable.selector_white_orange_selected);
        }

        // Hide the tracknumber
        if (!mShowTrackNo) {
            LayoutParams params = playlistViewHolder.trackNo.getLayoutParams();
            params.width = 0;
            params.height = 0;
            playlistViewHolder.trackNo.setLayoutParams(params);
        } else {
            playlistViewHolder.trackNo.setText(beautifyMissingTrackNr(mData.get(position).getTrack()));
        }

        playlistViewHolder.title.setText(mData.get(position).getTitle());
        playlistViewHolder.artist.setText(mData.get(position).getArtist() +
                " / " +
                mData.get(position).getAlbum());
        playlistViewHolder.length.setText(mData.get(position).getPrettyLength());

        return convertView;
    }

    private String beautifyMissingTrackNr(int trackNr) {
        return trackNr == UNKNWON_TRACK_NUMBER ? "" : String.valueOf(trackNr) + ".";
    }

    @Override
    public int getCount() {
        return mData.size();
    }

    @Override
    public MySong getItem(int position) {
        return mData.get(position);
    }

    @Override
    public int getPosition(MySong item) {
        return mData.indexOf(item);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public void notifyDataSetChanged() {
        super.notifyDataSetChanged();
    }

    private class CustomFilter extends Filter {

        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            String cs = constraint.toString();
            FilterResults results = new FilterResults();

            if (constraint == null || constraint.length() == 0) {
                List<MySong> list = new LinkedList<MySong>(mOrigData);
                results.values = list;
                results.count = list.size();
            } else {
                List<MySong> filteredSongs = new LinkedList<MySong>();
                for (int i = 0; i < mOrigData.size(); i++) {
                    MySong song = mOrigData.get(i);
                    if (song.contains(cs)) {
                        filteredSongs.add(song);
                    }
                }
                results.values = filteredSongs;
                results.count = filteredSongs.size();
            }

            return results;
        }

        @SuppressWarnings("unchecked")
        @Override
        protected void publishResults(CharSequence constraint,
                FilterResults results) {
            mData.clear();
            mData.addAll((List<MySong>) results.values);
            notifyDataSetChanged();
        }

    }

    private class PlaylistViewHolder {

        TextView artist;

        TextView title;

        TextView length;

        TextView trackNo;
    }
}