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-rw-r--r--src/github/daneren2005/dsub/adapter/AlbumListAdapter.java74
1 files changed, 72 insertions, 2 deletions
diff --git a/src/github/daneren2005/dsub/adapter/AlbumListAdapter.java b/src/github/daneren2005/dsub/adapter/AlbumListAdapter.java
index 2e91d949..b2fcded3 100644
--- a/src/github/daneren2005/dsub/adapter/AlbumListAdapter.java
+++ b/src/github/daneren2005/dsub/adapter/AlbumListAdapter.java
@@ -23,17 +23,21 @@ import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
+import android.widget.SectionIndexer;
+
import com.commonsware.cwac.endless.EndlessAdapter;
import github.daneren2005.dsub.R;
import github.daneren2005.dsub.domain.MusicDirectory;
import github.daneren2005.dsub.domain.ServerInfo;
import github.daneren2005.dsub.service.MusicService;
import github.daneren2005.dsub.service.MusicServiceFactory;
-import github.daneren2005.dsub.util.Util;
+import java.util.ArrayList;
+import java.util.LinkedHashSet;
import java.util.List;
+import java.util.Set;
-public class AlbumListAdapter extends EndlessAdapter {
+public class AlbumListAdapter extends EndlessAdapter implements SectionIndexer {
Context context;
ArrayAdapter<MusicDirectory.Entry> adapter;
String type;
@@ -41,6 +45,10 @@ public class AlbumListAdapter extends EndlessAdapter {
int size;
int offset;
List<MusicDirectory.Entry> entries;
+
+ private boolean shouldIndex = false;
+ private Object[] sections;
+ private Integer[] positions;
public AlbumListAdapter(Context context, ArrayAdapter<MusicDirectory.Entry> adapter, String type, String extra, int size) {
super(adapter);
@@ -50,6 +58,11 @@ public class AlbumListAdapter extends EndlessAdapter {
this.extra = extra;
this.size = size;
this.offset = size;
+
+ if("alphabeticalByName".equals(this.type)) {
+ shouldIndex = true;
+ recreateIndexes();
+ }
}
@Override
@@ -73,6 +86,7 @@ public class AlbumListAdapter extends EndlessAdapter {
adapter.add(entry);
}
offset += entries.size();
+ recreateIndexes();
}
@Override
@@ -81,4 +95,60 @@ public class AlbumListAdapter extends EndlessAdapter {
progress.setVisibility(View.VISIBLE);
return progress;
}
+
+ private void recreateIndexes() {
+ if(!shouldIndex) {
+ return;
+ }
+
+ Set<String> sectionSet = new LinkedHashSet<String>(30);
+ List<Integer> positionList = new ArrayList<Integer>(30);
+ for (int i = 0; i < adapter.getCount(); i++) {
+ MusicDirectory.Entry entry = adapter.getItem(i);
+ String index = entry.getAlbum().substring(0, 1);
+ if(!Character.isLetter(index.charAt(0))) {
+ index = "#";
+ }
+
+ 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() {
+ if(sections != null) {
+ return sections;
+ } else {
+ return new Object[0];
+ }
+ }
+
+ @Override
+ public int getPositionForSection(int section) {
+ if(sections != null) {
+ section = Math.min(section, positions.length - 1);
+ return positions[section];
+ } else {
+ return 0;
+ }
+ }
+
+ @Override
+ public int getSectionForPosition(int pos) {
+ if(sections != null) {
+ for (int i = 0; i < sections.length - 1; i++) {
+ if (pos < positions[i + 1]) {
+ return i;
+ }
+ }
+ return sections.length - 1;
+ } else {
+ return 0;
+ }
+ }
}