ultrasonic-app-subsonic-android/src/com/thejoshwa/ultrasonic/androidapp/activity/SelectPlaylistActivity.java

/*
 This file is part of Subsonic.

 Subsonic 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.

 Subsonic 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 Subsonic.  If not, see <http://www.gnu.org/licenses/>.

 Copyright 2009 (C) Sindre Mehus
 */

package com.thejoshwa.ultrasonic.androidapp.activity;

import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshListView;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;
import com.thejoshwa.ultrasonic.androidapp.R;
import com.thejoshwa.ultrasonic.androidapp.domain.Playlist;
import com.thejoshwa.ultrasonic.androidapp.service.MusicServiceFactory;
import com.thejoshwa.ultrasonic.androidapp.service.MusicService;
import com.thejoshwa.ultrasonic.androidapp.util.BackgroundTask;
import com.thejoshwa.ultrasonic.androidapp.util.Constants;
import com.thejoshwa.ultrasonic.androidapp.util.TabActivityBackgroundTask;
import com.thejoshwa.ultrasonic.androidapp.util.Util;

import java.util.List;

public class SelectPlaylistActivity extends SubsonicTabActivity implements AdapterView.OnItemClickListener {

    private static final int MENU_ITEM_PLAY_ALL = 1;

    private PullToRefreshListView refreshPlaylistsListView;
    private ListView playlistsListView;
    private View emptyTextView;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.select_playlist);

        refreshPlaylistsListView = (PullToRefreshListView) findViewById(R.id.select_playlist_list);
        playlistsListView = refreshPlaylistsListView.getRefreshableView();
        
        refreshPlaylistsListView.setOnRefreshListener(new OnRefreshListener<ListView>() {
            @Override
            public void onRefresh(PullToRefreshBase<ListView> refreshView) {
                new GetDataTask().execute();
            }
        });
        
        emptyTextView = findViewById(R.id.select_playlist_empty);
        playlistsListView.setOnItemClickListener(this);
        registerForContextMenu(playlistsListView);

        View playlistsMenuItem = findViewById(R.id.menu_playlists);
        menuDrawer.setActiveView(playlistsMenuItem);
        
        getActionBar().setTitle(R.string.common_appname);
        getActionBar().setSubtitle(R.string.playlist_label);

        load();
    }
    
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
    	super.onCreateOptionsMenu(menu);
    	return true;
    }

	private void refresh() {
		finish();
		Intent intent = new Intent(this, SelectPlaylistActivity.class);
		intent.putExtra(Constants.INTENT_EXTRA_NAME_REFRESH, true);
		Util.startActivityWithoutTransition(this, intent);
	}

    private void load() {
        BackgroundTask<List<Playlist>> task = new TabActivityBackgroundTask<List<Playlist>>(this) {
            @Override
            protected List<Playlist> doInBackground() throws Throwable {
                MusicService musicService = MusicServiceFactory.getMusicService(SelectPlaylistActivity.this);
                boolean refresh = getIntent().getBooleanExtra(Constants.INTENT_EXTRA_NAME_REFRESH, false);
                return musicService.getPlaylists(refresh, SelectPlaylistActivity.this, this);
            }

            @Override
            protected void done(List<Playlist> result) {
                playlistsListView.setAdapter(new PlaylistAdapter(result));
                emptyTextView.setVisibility(result.isEmpty() ? View.VISIBLE : View.GONE);
            }
        };
        task.execute();
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View view, ContextMenu.ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, view, menuInfo);
        menu.add(Menu.NONE, MENU_ITEM_PLAY_ALL, MENU_ITEM_PLAY_ALL, R.string.common_play_now);
    }

    @Override
    public boolean onContextItemSelected(MenuItem menuItem) {
        AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuItem.getMenuInfo();
        Playlist playlist = (Playlist) playlistsListView.getItemAtPosition(info.position);

        switch (menuItem.getItemId()) {
            case MENU_ITEM_PLAY_ALL:
                Intent intent = new Intent(SelectPlaylistActivity.this, SelectAlbumActivity.class);
                intent.putExtra(Constants.INTENT_EXTRA_NAME_PLAYLIST_ID, playlist.getId());
                intent.putExtra(Constants.INTENT_EXTRA_NAME_PLAYLIST_NAME, playlist.getName());
                intent.putExtra(Constants.INTENT_EXTRA_NAME_AUTOPLAY, true);
                Util.startActivityWithoutTransition(SelectPlaylistActivity.this, intent);
                break;
            default:
                return super.onContextItemSelected(menuItem);
        }
        return true;
    }
    
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
			case android.R.id.home:
				menuDrawer.toggleMenu();
				return true; 
        }

        return false;
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

        Playlist playlist = (Playlist) parent.getItemAtPosition(position);

        Intent intent = new Intent(SelectPlaylistActivity.this, SelectAlbumActivity.class);
        intent.putExtra(Constants.INTENT_EXTRA_NAME_PLAYLIST_ID, playlist.getId());
        intent.putExtra(Constants.INTENT_EXTRA_NAME_PLAYLIST_NAME, playlist.getName());
        Util.startActivityWithoutTransition(SelectPlaylistActivity.this, intent);
    }

    private class PlaylistAdapter extends ArrayAdapter<Playlist> {
        public PlaylistAdapter(List<Playlist> playlists) {
            super(SelectPlaylistActivity.this, R.layout.playlist_list_item, playlists);
        }
    }
    
    private class GetDataTask extends AsyncTask<Void, Void, String[]> {
        @Override
        protected void onPostExecute(String[] result) {
            refreshPlaylistsListView.onRefreshComplete();
            super.onPostExecute(result);
        }

		@Override
		protected String[] doInBackground(Void... params) {
			refresh();
			return null;
		}
    }
}