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Diffstat (limited to 'subsonic-android/src/github/daneren2005/subphonic/util/ArtistAdapter.java')
-rw-r--r-- | subsonic-android/src/github/daneren2005/subphonic/util/ArtistAdapter.java | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/subsonic-android/src/github/daneren2005/subphonic/util/ArtistAdapter.java b/subsonic-android/src/github/daneren2005/subphonic/util/ArtistAdapter.java new file mode 100644 index 00000000..6e60d1d8 --- /dev/null +++ b/subsonic-android/src/github/daneren2005/subphonic/util/ArtistAdapter.java @@ -0,0 +1,78 @@ +/* + 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 2010 (C) Sindre Mehus + */ +package github.daneren2005.subphonic.util; + +import github.daneren2005.subphonic.domain.Artist; +import github.daneren2005.subphonic.R; +import android.widget.ArrayAdapter; +import android.widget.SectionIndexer; +import android.content.Context; + +import java.util.List; +import java.util.Set; +import java.util.LinkedHashSet; +import java.util.ArrayList; + +/** + * @author Sindre Mehus +*/ +public class ArtistAdapter extends ArrayAdapter<Artist> implements SectionIndexer { + + // Both arrays are indexed by section ID. + private final Object[] sections; + private final Integer[] positions; + + public ArtistAdapter(Context context, List<Artist> artists) { + super(context, R.layout.artist_list_item, artists); + + Set<String> sectionSet = new LinkedHashSet<String>(30); + List<Integer> positionList = new ArrayList<Integer>(30); + for (int i = 0; i < artists.size(); i++) { + Artist artist = artists.get(i); + String index = artist.getIndex(); + 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; + } +} |