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Diffstat (limited to 'subsonic-android/src/github/daneren2005/subphonic/util/PlaylistAdapter.java')
-rw-r--r-- | subsonic-android/src/github/daneren2005/subphonic/util/PlaylistAdapter.java | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/subsonic-android/src/github/daneren2005/subphonic/util/PlaylistAdapter.java b/subsonic-android/src/github/daneren2005/subphonic/util/PlaylistAdapter.java new file mode 100644 index 00000000..c434479a --- /dev/null +++ b/subsonic-android/src/github/daneren2005/subphonic/util/PlaylistAdapter.java @@ -0,0 +1,99 @@ +/* + 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 github.daneren2005.subphonic.util; + +import android.content.Context; +import android.widget.ArrayAdapter; +import android.widget.SectionIndexer; +import github.daneren2005.subphonic.R; +import github.daneren2005.subphonic.domain.Playlist; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.Comparator; +import java.util.LinkedHashSet; +import java.util.List; +import java.util.Set; + +/** +* @author Sindre Mehus +* @version $Id$ +*/ +public class PlaylistAdapter extends ArrayAdapter<Playlist> implements SectionIndexer { + + // Both arrays are indexed by section ID. + private final Object[] sections; + private final Integer[] positions; + + /** + * Note: playlists must be sorted alphabetically. + */ + public PlaylistAdapter(Context context, List<Playlist> playlists) { + super(context, R.layout.playlist_list_item, playlists); + + Set<String> sectionSet = new LinkedHashSet<String>(30); + List<Integer> positionList = new ArrayList<Integer>(30); + for (int i = 0; i < playlists.size(); i++) { + Playlist playlist = playlists.get(i); + if (playlist.getName().length() > 0) { + String index = playlist.getName().substring(0, 1).toUpperCase(); + if (!sectionSet.contains(index)) { + sectionSet.add(index); + positionList.add(i); + } + } + } + sections = sectionSet.toArray(new Object[sectionSet.size()]); + positions = positionList.toArray(new Integer[positionList.size()]); + } + + @Override + public Object[] getSections() { + return sections; + } + + @Override + public int getPositionForSection(int section) { + section = Math.min(section, positions.length - 1); + return positions[section]; + } + + @Override + public int getSectionForPosition(int pos) { + for (int i = 0; i < sections.length - 1; i++) { + if (pos < positions[i + 1]) { + return i; + } + } + return sections.length - 1; + } + + public static class PlaylistComparator implements Comparator<Playlist> { + @Override + public int compare(Playlist playlist1, Playlist playlist2) { + return playlist1.getName().compareToIgnoreCase(playlist2.getName()); + } + + public static List<Playlist> sort(List<Playlist> playlists) { + Collections.sort(playlists, new PlaylistComparator()); + return playlists; + } + + } +} |