1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.music;
18
19import com.android.music.MusicUtils.ServiceToken;
20import com.android.music.QueryBrowserActivity.QueryListAdapter.QueryHandler;
21
22import android.app.ExpandableListActivity;
23import android.app.SearchManager;
24import android.content.AsyncQueryHandler;
25import android.content.BroadcastReceiver;
26import android.content.ComponentName;
27import android.content.ContentResolver;
28import android.content.Context;
29import android.content.Intent;
30import android.content.IntentFilter;
31import android.content.ServiceConnection;
32import android.content.res.Resources;
33import android.database.Cursor;
34import android.database.CursorWrapper;
35import android.graphics.drawable.BitmapDrawable;
36import android.graphics.drawable.Drawable;
37import android.media.AudioManager;
38import android.net.Uri;
39import android.os.Bundle;
40import android.os.Handler;
41import android.os.IBinder;
42import android.os.Message;
43import android.os.Parcel;
44import android.os.Parcelable;
45import android.provider.MediaStore;
46import android.text.TextUtils;
47import android.util.Log;
48import android.util.SparseArray;
49import android.view.ContextMenu;
50import android.view.Menu;
51import android.view.MenuItem;
52import android.view.SubMenu;
53import android.view.View;
54import android.view.ViewGroup;
55import android.view.Window;
56import android.view.ContextMenu.ContextMenuInfo;
57import android.widget.ExpandableListView;
58import android.widget.ImageView;
59import android.widget.SectionIndexer;
60import android.widget.SimpleCursorTreeAdapter;
61import android.widget.TextView;
62import android.widget.ExpandableListView.ExpandableListContextMenuInfo;
63
64import java.text.Collator;
65
66
67public class ArtistAlbumBrowserActivity extends ExpandableListActivity
68        implements View.OnCreateContextMenuListener, MusicUtils.Defs, ServiceConnection
69{
70    private String mCurrentArtistId;
71    private String mCurrentArtistName;
72    private String mCurrentAlbumId;
73    private String mCurrentAlbumName;
74    private String mCurrentArtistNameForAlbum;
75    boolean mIsUnknownArtist;
76    boolean mIsUnknownAlbum;
77    private ArtistAlbumListAdapter mAdapter;
78    private boolean mAdapterSent;
79    private final static int SEARCH = CHILD_MENU_BASE;
80    private static int mLastListPosCourse = -1;
81    private static int mLastListPosFine = -1;
82    private ServiceToken mToken;
83
84    /** Called when the activity is first created. */
85    @Override
86    public void onCreate(Bundle icicle) {
87        super.onCreate(icicle);
88        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
89        requestWindowFeature(Window.FEATURE_NO_TITLE);
90        setVolumeControlStream(AudioManager.STREAM_MUSIC);
91        if (icicle != null) {
92            mCurrentAlbumId = icicle.getString("selectedalbum");
93            mCurrentAlbumName = icicle.getString("selectedalbumname");
94            mCurrentArtistId = icicle.getString("selectedartist");
95            mCurrentArtistName = icicle.getString("selectedartistname");
96        }
97        mToken = MusicUtils.bindToService(this, this);
98
99        IntentFilter f = new IntentFilter();
100        f.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED);
101        f.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
102        f.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
103        f.addDataScheme("file");
104        registerReceiver(mScanListener, f);
105
106        setContentView(R.layout.media_picker_activity_expanding);
107        MusicUtils.updateButtonBar(this, R.id.artisttab);
108        ExpandableListView lv = getExpandableListView();
109        lv.setOnCreateContextMenuListener(this);
110        lv.setTextFilterEnabled(true);
111
112        mAdapter = (ArtistAlbumListAdapter) getLastNonConfigurationInstance();
113        if (mAdapter == null) {
114            //Log.i("@@@", "starting query");
115            mAdapter = new ArtistAlbumListAdapter(
116                    getApplication(),
117                    this,
118                    null, // cursor
119                    R.layout.track_list_item_group,
120                    new String[] {},
121                    new int[] {},
122                    R.layout.track_list_item_child,
123                    new String[] {},
124                    new int[] {});
125            setListAdapter(mAdapter);
126            setTitle(R.string.working_artists);
127            getArtistCursor(mAdapter.getQueryHandler(), null);
128        } else {
129            mAdapter.setActivity(this);
130            setListAdapter(mAdapter);
131            mArtistCursor = mAdapter.getCursor();
132            if (mArtistCursor != null) {
133                init(mArtistCursor);
134            } else {
135                getArtistCursor(mAdapter.getQueryHandler(), null);
136            }
137        }
138    }
139
140    @Override
141    public Object onRetainNonConfigurationInstance() {
142        mAdapterSent = true;
143        return mAdapter;
144    }
145
146    @Override
147    public void onSaveInstanceState(Bundle outcicle) {
148        // need to store the selected item so we don't lose it in case
149        // of an orientation switch. Otherwise we could lose it while
150        // in the middle of specifying a playlist to add the item to.
151        outcicle.putString("selectedalbum", mCurrentAlbumId);
152        outcicle.putString("selectedalbumname", mCurrentAlbumName);
153        outcicle.putString("selectedartist", mCurrentArtistId);
154        outcicle.putString("selectedartistname", mCurrentArtistName);
155        super.onSaveInstanceState(outcicle);
156    }
157
158    @Override
159    public void onDestroy() {
160        ExpandableListView lv = getExpandableListView();
161        if (lv != null) {
162            mLastListPosCourse = lv.getFirstVisiblePosition();
163            View cv = lv.getChildAt(0);
164            if (cv != null) {
165                mLastListPosFine = cv.getTop();
166            }
167        }
168
169        MusicUtils.unbindFromService(mToken);
170        // If we have an adapter and didn't send it off to another activity yet, we should
171        // close its cursor, which we do by assigning a null cursor to it. Doing this
172        // instead of closing the cursor directly keeps the framework from accessing
173        // the closed cursor later.
174        if (!mAdapterSent && mAdapter != null) {
175            mAdapter.changeCursor(null);
176        }
177        // Because we pass the adapter to the next activity, we need to make
178        // sure it doesn't keep a reference to this activity. We can do this
179        // by clearing its DatasetObservers, which setListAdapter(null) does.
180        setListAdapter(null);
181        mAdapter = null;
182        unregisterReceiver(mScanListener);
183        setListAdapter(null);
184        super.onDestroy();
185    }
186
187    @Override
188    public void onResume() {
189        super.onResume();
190        IntentFilter f = new IntentFilter();
191        f.addAction(MediaPlaybackService.META_CHANGED);
192        f.addAction(MediaPlaybackService.QUEUE_CHANGED);
193        registerReceiver(mTrackListListener, f);
194        mTrackListListener.onReceive(null, null);
195
196        MusicUtils.setSpinnerState(this);
197    }
198
199    private BroadcastReceiver mTrackListListener = new BroadcastReceiver() {
200        @Override
201        public void onReceive(Context context, Intent intent) {
202            getExpandableListView().invalidateViews();
203            MusicUtils.updateNowPlaying(ArtistAlbumBrowserActivity.this);
204        }
205    };
206    private BroadcastReceiver mScanListener = new BroadcastReceiver() {
207        @Override
208        public void onReceive(Context context, Intent intent) {
209            MusicUtils.setSpinnerState(ArtistAlbumBrowserActivity.this);
210            mReScanHandler.sendEmptyMessage(0);
211            if (intent.getAction().equals(Intent.ACTION_MEDIA_UNMOUNTED)) {
212                MusicUtils.clearAlbumArtCache();
213            }
214        }
215    };
216
217    private Handler mReScanHandler = new Handler() {
218        @Override
219        public void handleMessage(Message msg) {
220            if (mAdapter != null) {
221                getArtistCursor(mAdapter.getQueryHandler(), null);
222            }
223        }
224    };
225
226    @Override
227    public void onPause() {
228        unregisterReceiver(mTrackListListener);
229        mReScanHandler.removeCallbacksAndMessages(null);
230        super.onPause();
231    }
232
233    public void init(Cursor c) {
234
235        if (mAdapter == null) {
236            return;
237        }
238        mAdapter.changeCursor(c); // also sets mArtistCursor
239
240        if (mArtistCursor == null) {
241            MusicUtils.displayDatabaseError(this);
242            closeContextMenu();
243            mReScanHandler.sendEmptyMessageDelayed(0, 1000);
244            return;
245        }
246
247        // restore previous position
248        if (mLastListPosCourse >= 0) {
249            ExpandableListView elv = getExpandableListView();
250            elv.setSelectionFromTop(mLastListPosCourse, mLastListPosFine);
251            mLastListPosCourse = -1;
252        }
253
254        MusicUtils.hideDatabaseError(this);
255        MusicUtils.updateButtonBar(this, R.id.artisttab);
256        setTitle();
257    }
258
259    private void setTitle() {
260        setTitle(R.string.artists_title);
261    }
262
263    @Override
264    public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
265
266        mCurrentAlbumId = Long.valueOf(id).toString();
267
268        Intent intent = new Intent(Intent.ACTION_PICK);
269        intent.setDataAndType(Uri.EMPTY, "vnd.android.cursor.dir/track");
270        intent.putExtra("album", mCurrentAlbumId);
271        Cursor c = (Cursor) getExpandableListAdapter().getChild(groupPosition, childPosition);
272        String album = c.getString(c.getColumnIndex(MediaStore.Audio.Albums.ALBUM));
273        if (album == null || album.equals(MediaStore.UNKNOWN_STRING)) {
274            // unknown album, so we should include the artist ID to limit the songs to songs only by that artist
275            mArtistCursor.moveToPosition(groupPosition);
276            mCurrentArtistId = mArtistCursor.getString(mArtistCursor.getColumnIndex(MediaStore.Audio.Artists._ID));
277            intent.putExtra("artist", mCurrentArtistId);
278        }
279        startActivity(intent);
280        return true;
281    }
282
283    @Override
284    public boolean onCreateOptionsMenu(Menu menu) {
285        super.onCreateOptionsMenu(menu);
286        menu.add(0, PARTY_SHUFFLE, 0, R.string.party_shuffle); // icon will be set in onPrepareOptionsMenu()
287        menu.add(0, SHUFFLE_ALL, 0, R.string.shuffle_all).setIcon(R.drawable.ic_menu_shuffle);
288        return true;
289    }
290
291    @Override
292    public boolean onPrepareOptionsMenu(Menu menu) {
293        MusicUtils.setPartyShuffleMenuIcon(menu);
294        return super.onPrepareOptionsMenu(menu);
295    }
296
297    @Override
298    public boolean onOptionsItemSelected(MenuItem item) {
299        Intent intent;
300        Cursor cursor;
301        switch (item.getItemId()) {
302            case PARTY_SHUFFLE:
303                MusicUtils.togglePartyShuffle();
304                break;
305
306            case SHUFFLE_ALL:
307                cursor = MusicUtils.query(this, MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
308                        new String [] { MediaStore.Audio.Media._ID},
309                        MediaStore.Audio.Media.IS_MUSIC + "=1", null,
310                        MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
311                if (cursor != null) {
312                    MusicUtils.shuffleAll(this, cursor);
313                    cursor.close();
314                }
315                return true;
316        }
317        return super.onOptionsItemSelected(item);
318    }
319
320    @Override
321    public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo menuInfoIn) {
322        menu.add(0, PLAY_SELECTION, 0, R.string.play_selection);
323        SubMenu sub = menu.addSubMenu(0, ADD_TO_PLAYLIST, 0, R.string.add_to_playlist);
324        MusicUtils.makePlaylistMenu(this, sub);
325        menu.add(0, DELETE_ITEM, 0, R.string.delete_item);
326
327        ExpandableListContextMenuInfo mi = (ExpandableListContextMenuInfo) menuInfoIn;
328
329        int itemtype = ExpandableListView.getPackedPositionType(mi.packedPosition);
330        int gpos = ExpandableListView.getPackedPositionGroup(mi.packedPosition);
331        int cpos = ExpandableListView.getPackedPositionChild(mi.packedPosition);
332        if (itemtype == ExpandableListView.PACKED_POSITION_TYPE_GROUP) {
333            if (gpos == -1) {
334                // this shouldn't happen
335                Log.d("Artist/Album", "no group");
336                return;
337            }
338            gpos = gpos - getExpandableListView().getHeaderViewsCount();
339            mArtistCursor.moveToPosition(gpos);
340            mCurrentArtistId = mArtistCursor.getString(mArtistCursor.getColumnIndexOrThrow(MediaStore.Audio.Artists._ID));
341            mCurrentArtistName = mArtistCursor.getString(mArtistCursor.getColumnIndexOrThrow(MediaStore.Audio.Artists.ARTIST));
342            mCurrentAlbumId = null;
343            mIsUnknownArtist = mCurrentArtistName == null ||
344                    mCurrentArtistName.equals(MediaStore.UNKNOWN_STRING);
345            mIsUnknownAlbum = true;
346            if (mIsUnknownArtist) {
347                menu.setHeaderTitle(getString(R.string.unknown_artist_name));
348            } else {
349                menu.setHeaderTitle(mCurrentArtistName);
350                menu.add(0, SEARCH, 0, R.string.search_title);
351            }
352            return;
353        } else if (itemtype == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
354            if (cpos == -1) {
355                // this shouldn't happen
356                Log.d("Artist/Album", "no child");
357                return;
358            }
359            Cursor c = (Cursor) getExpandableListAdapter().getChild(gpos, cpos);
360            c.moveToPosition(cpos);
361            mCurrentArtistId = null;
362            mCurrentAlbumId = Long.valueOf(mi.id).toString();
363            mCurrentAlbumName = c.getString(c.getColumnIndexOrThrow(MediaStore.Audio.Albums.ALBUM));
364            gpos = gpos - getExpandableListView().getHeaderViewsCount();
365            mArtistCursor.moveToPosition(gpos);
366            mCurrentArtistNameForAlbum = mArtistCursor.getString(
367                    mArtistCursor.getColumnIndexOrThrow(MediaStore.Audio.Artists.ARTIST));
368            mIsUnknownArtist = mCurrentArtistNameForAlbum == null ||
369                    mCurrentArtistNameForAlbum.equals(MediaStore.UNKNOWN_STRING);
370            mIsUnknownAlbum = mCurrentAlbumName == null ||
371                    mCurrentAlbumName.equals(MediaStore.UNKNOWN_STRING);
372            if (mIsUnknownAlbum) {
373                menu.setHeaderTitle(getString(R.string.unknown_album_name));
374            } else {
375                menu.setHeaderTitle(mCurrentAlbumName);
376            }
377            if (!mIsUnknownAlbum || !mIsUnknownArtist) {
378                menu.add(0, SEARCH, 0, R.string.search_title);
379            }
380        }
381    }
382
383    @Override
384    public boolean onContextItemSelected(MenuItem item) {
385        switch (item.getItemId()) {
386            case PLAY_SELECTION: {
387                // play everything by the selected artist
388                long [] list =
389                    mCurrentArtistId != null ?
390                    MusicUtils.getSongListForArtist(this, Long.parseLong(mCurrentArtistId))
391                    : MusicUtils.getSongListForAlbum(this, Long.parseLong(mCurrentAlbumId));
392
393                MusicUtils.playAll(this, list, 0);
394                return true;
395            }
396
397            case QUEUE: {
398                long [] list =
399                    mCurrentArtistId != null ?
400                    MusicUtils.getSongListForArtist(this, Long.parseLong(mCurrentArtistId))
401                    : MusicUtils.getSongListForAlbum(this, Long.parseLong(mCurrentAlbumId));
402                MusicUtils.addToCurrentPlaylist(this, list);
403                return true;
404            }
405
406            case NEW_PLAYLIST: {
407                Intent intent = new Intent();
408                intent.setClass(this, CreatePlaylist.class);
409                startActivityForResult(intent, NEW_PLAYLIST);
410                return true;
411            }
412
413            case PLAYLIST_SELECTED: {
414                long [] list =
415                    mCurrentArtistId != null ?
416                    MusicUtils.getSongListForArtist(this, Long.parseLong(mCurrentArtistId))
417                    : MusicUtils.getSongListForAlbum(this, Long.parseLong(mCurrentAlbumId));
418                long playlist = item.getIntent().getLongExtra("playlist", 0);
419                MusicUtils.addToPlaylist(this, list, playlist);
420                return true;
421            }
422
423            case DELETE_ITEM: {
424                long [] list;
425                String desc;
426                if (mCurrentArtistId != null) {
427                    list = MusicUtils.getSongListForArtist(this, Long.parseLong(mCurrentArtistId));
428                    String f;
429                    if (android.os.Environment.isExternalStorageRemovable()) {
430                        f = getString(R.string.delete_artist_desc);
431                    } else {
432                        f = getString(R.string.delete_artist_desc_nosdcard);
433                    }
434                    desc = String.format(f, mCurrentArtistName);
435                } else {
436                    list = MusicUtils.getSongListForAlbum(this, Long.parseLong(mCurrentAlbumId));
437                    String f;
438                    if (android.os.Environment.isExternalStorageRemovable()) {
439                        f = getString(R.string.delete_album_desc);
440                    } else {
441                        f = getString(R.string.delete_album_desc_nosdcard);
442                    }
443
444                    desc = String.format(f, mCurrentAlbumName);
445                }
446                Bundle b = new Bundle();
447                b.putString("description", desc);
448                b.putLongArray("items", list);
449                Intent intent = new Intent();
450                intent.setClass(this, DeleteItems.class);
451                intent.putExtras(b);
452                startActivityForResult(intent, -1);
453                return true;
454            }
455
456            case SEARCH:
457                doSearch();
458                return true;
459        }
460        return super.onContextItemSelected(item);
461    }
462
463    void doSearch() {
464        CharSequence title = null;
465        String query = null;
466
467        Intent i = new Intent();
468        i.setAction(MediaStore.INTENT_ACTION_MEDIA_SEARCH);
469        i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
470
471        if (mCurrentArtistId != null) {
472            title = mCurrentArtistName;
473            query = mCurrentArtistName;
474            i.putExtra(MediaStore.EXTRA_MEDIA_ARTIST, mCurrentArtistName);
475            i.putExtra(MediaStore.EXTRA_MEDIA_FOCUS, MediaStore.Audio.Artists.ENTRY_CONTENT_TYPE);
476        } else {
477            if (mIsUnknownAlbum) {
478                title = query = mCurrentArtistNameForAlbum;
479            } else {
480                title = query = mCurrentAlbumName;
481                if (!mIsUnknownArtist) {
482                    query = query + " " + mCurrentArtistNameForAlbum;
483                }
484            }
485            i.putExtra(MediaStore.EXTRA_MEDIA_ARTIST, mCurrentArtistNameForAlbum);
486            i.putExtra(MediaStore.EXTRA_MEDIA_ALBUM, mCurrentAlbumName);
487            i.putExtra(MediaStore.EXTRA_MEDIA_FOCUS, MediaStore.Audio.Albums.ENTRY_CONTENT_TYPE);
488        }
489        title = getString(R.string.mediasearch, title);
490        i.putExtra(SearchManager.QUERY, query);
491
492        startActivity(Intent.createChooser(i, title));
493    }
494
495    @Override
496    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
497        switch (requestCode) {
498            case SCAN_DONE:
499                if (resultCode == RESULT_CANCELED) {
500                    finish();
501                } else {
502                    getArtistCursor(mAdapter.getQueryHandler(), null);
503                }
504                break;
505
506            case NEW_PLAYLIST:
507                if (resultCode == RESULT_OK) {
508                    Uri uri = intent.getData();
509                    if (uri != null) {
510                        long [] list = null;
511                        if (mCurrentArtistId != null) {
512                            list = MusicUtils.getSongListForArtist(this, Long.parseLong(mCurrentArtistId));
513                        } else if (mCurrentAlbumId != null) {
514                            list = MusicUtils.getSongListForAlbum(this, Long.parseLong(mCurrentAlbumId));
515                        }
516                        MusicUtils.addToPlaylist(this, list, Long.parseLong(uri.getLastPathSegment()));
517                    }
518                }
519                break;
520        }
521    }
522
523    private Cursor getArtistCursor(AsyncQueryHandler async, String filter) {
524
525        String[] cols = new String[] {
526                MediaStore.Audio.Artists._ID,
527                MediaStore.Audio.Artists.ARTIST,
528                MediaStore.Audio.Artists.NUMBER_OF_ALBUMS,
529                MediaStore.Audio.Artists.NUMBER_OF_TRACKS
530        };
531
532        Uri uri = MediaStore.Audio.Artists.EXTERNAL_CONTENT_URI;
533        if (!TextUtils.isEmpty(filter)) {
534            uri = uri.buildUpon().appendQueryParameter("filter", Uri.encode(filter)).build();
535        }
536
537        Cursor ret = null;
538        if (async != null) {
539            async.startQuery(0, null, uri,
540                    cols, null , null, MediaStore.Audio.Artists.ARTIST_KEY);
541        } else {
542            ret = MusicUtils.query(this, uri,
543                    cols, null , null, MediaStore.Audio.Artists.ARTIST_KEY);
544        }
545        return ret;
546    }
547
548    static class ArtistAlbumListAdapter extends SimpleCursorTreeAdapter implements SectionIndexer {
549
550        private final Drawable mNowPlayingOverlay;
551        private final BitmapDrawable mDefaultAlbumIcon;
552        private int mGroupArtistIdIdx;
553        private int mGroupArtistIdx;
554        private int mGroupAlbumIdx;
555        private int mGroupSongIdx;
556        private final Context mContext;
557        private final Resources mResources;
558        private final String mAlbumSongSeparator;
559        private final String mUnknownAlbum;
560        private final String mUnknownArtist;
561        private final StringBuilder mBuffer = new StringBuilder();
562        private final Object[] mFormatArgs = new Object[1];
563        private final Object[] mFormatArgs3 = new Object[3];
564        private MusicAlphabetIndexer mIndexer;
565        private ArtistAlbumBrowserActivity mActivity;
566        private AsyncQueryHandler mQueryHandler;
567        private String mConstraint = null;
568        private boolean mConstraintIsValid = false;
569
570        static class ViewHolder {
571            TextView line1;
572            TextView line2;
573            ImageView play_indicator;
574            ImageView icon;
575        }
576
577        class QueryHandler extends AsyncQueryHandler {
578            QueryHandler(ContentResolver res) {
579                super(res);
580            }
581
582            @Override
583            protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
584                //Log.i("@@@", "query complete");
585                mActivity.init(cursor);
586            }
587        }
588
589        ArtistAlbumListAdapter(Context context, ArtistAlbumBrowserActivity currentactivity,
590                Cursor cursor, int glayout, String[] gfrom, int[] gto,
591                int clayout, String[] cfrom, int[] cto) {
592            super(context, cursor, glayout, gfrom, gto, clayout, cfrom, cto);
593            mActivity = currentactivity;
594            mQueryHandler = new QueryHandler(context.getContentResolver());
595
596            Resources r = context.getResources();
597            mNowPlayingOverlay = r.getDrawable(R.drawable.indicator_ic_mp_playing_list);
598            mDefaultAlbumIcon = (BitmapDrawable) r.getDrawable(R.drawable.albumart_mp_unknown_list);
599            // no filter or dither, it's a lot faster and we can't tell the difference
600            mDefaultAlbumIcon.setFilterBitmap(false);
601            mDefaultAlbumIcon.setDither(false);
602
603            mContext = context;
604            getColumnIndices(cursor);
605            mResources = context.getResources();
606            mAlbumSongSeparator = context.getString(R.string.albumsongseparator);
607            mUnknownAlbum = context.getString(R.string.unknown_album_name);
608            mUnknownArtist = context.getString(R.string.unknown_artist_name);
609        }
610
611        private void getColumnIndices(Cursor cursor) {
612            if (cursor != null) {
613                mGroupArtistIdIdx = cursor.getColumnIndexOrThrow(MediaStore.Audio.Artists._ID);
614                mGroupArtistIdx = cursor.getColumnIndexOrThrow(MediaStore.Audio.Artists.ARTIST);
615                mGroupAlbumIdx = cursor.getColumnIndexOrThrow(MediaStore.Audio.Artists.NUMBER_OF_ALBUMS);
616                mGroupSongIdx = cursor.getColumnIndexOrThrow(MediaStore.Audio.Artists.NUMBER_OF_TRACKS);
617                if (mIndexer != null) {
618                    mIndexer.setCursor(cursor);
619                } else {
620                    mIndexer = new MusicAlphabetIndexer(cursor, mGroupArtistIdx,
621                            mResources.getString(R.string.fast_scroll_alphabet));
622                }
623            }
624        }
625
626        public void setActivity(ArtistAlbumBrowserActivity newactivity) {
627            mActivity = newactivity;
628        }
629
630        public AsyncQueryHandler getQueryHandler() {
631            return mQueryHandler;
632        }
633
634        @Override
635        public View newGroupView(Context context, Cursor cursor, boolean isExpanded, ViewGroup parent) {
636            View v = super.newGroupView(context, cursor, isExpanded, parent);
637            ImageView iv = (ImageView) v.findViewById(R.id.icon);
638            ViewGroup.LayoutParams p = iv.getLayoutParams();
639            p.width = ViewGroup.LayoutParams.WRAP_CONTENT;
640            p.height = ViewGroup.LayoutParams.WRAP_CONTENT;
641            ViewHolder vh = new ViewHolder();
642            vh.line1 = (TextView) v.findViewById(R.id.line1);
643            vh.line2 = (TextView) v.findViewById(R.id.line2);
644            vh.play_indicator = (ImageView) v.findViewById(R.id.play_indicator);
645            vh.icon = (ImageView) v.findViewById(R.id.icon);
646            vh.icon.setPadding(0, 0, 1, 0);
647            v.setTag(vh);
648            return v;
649        }
650
651        @Override
652        public View newChildView(Context context, Cursor cursor, boolean isLastChild,
653                ViewGroup parent) {
654            View v = super.newChildView(context, cursor, isLastChild, parent);
655            ViewHolder vh = new ViewHolder();
656            vh.line1 = (TextView) v.findViewById(R.id.line1);
657            vh.line2 = (TextView) v.findViewById(R.id.line2);
658            vh.play_indicator = (ImageView) v.findViewById(R.id.play_indicator);
659            vh.icon = (ImageView) v.findViewById(R.id.icon);
660            vh.icon.setBackgroundDrawable(mDefaultAlbumIcon);
661            vh.icon.setPadding(0, 0, 1, 0);
662            v.setTag(vh);
663            return v;
664        }
665
666        @Override
667        public void bindGroupView(View view, Context context, Cursor cursor, boolean isexpanded) {
668
669            ViewHolder vh = (ViewHolder) view.getTag();
670
671            String artist = cursor.getString(mGroupArtistIdx);
672            String displayartist = artist;
673            boolean unknown = artist == null || artist.equals(MediaStore.UNKNOWN_STRING);
674            if (unknown) {
675                displayartist = mUnknownArtist;
676            }
677            vh.line1.setText(displayartist);
678
679            int numalbums = cursor.getInt(mGroupAlbumIdx);
680            int numsongs = cursor.getInt(mGroupSongIdx);
681
682            String songs_albums = MusicUtils.makeAlbumsLabel(context,
683                    numalbums, numsongs, unknown);
684
685            vh.line2.setText(songs_albums);
686
687            long currentartistid = MusicUtils.getCurrentArtistId();
688            long artistid = cursor.getLong(mGroupArtistIdIdx);
689            if (currentartistid == artistid && !isexpanded) {
690                vh.play_indicator.setImageDrawable(mNowPlayingOverlay);
691            } else {
692                vh.play_indicator.setImageDrawable(null);
693            }
694        }
695
696        @Override
697        public void bindChildView(View view, Context context, Cursor cursor, boolean islast) {
698
699            ViewHolder vh = (ViewHolder) view.getTag();
700
701            String name = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Albums.ALBUM));
702            String displayname = name;
703            boolean unknown = name == null || name.equals(MediaStore.UNKNOWN_STRING);
704            if (unknown) {
705                displayname = mUnknownAlbum;
706            }
707            vh.line1.setText(displayname);
708
709            int numsongs = cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.Audio.Albums.NUMBER_OF_SONGS));
710            int numartistsongs = cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.Audio.Albums.NUMBER_OF_SONGS_FOR_ARTIST));
711
712            final StringBuilder builder = mBuffer;
713            builder.delete(0, builder.length());
714            if (unknown) {
715                numsongs = numartistsongs;
716            }
717
718            if (numsongs == 1) {
719                builder.append(context.getString(R.string.onesong));
720            } else {
721                if (numsongs == numartistsongs) {
722                    final Object[] args = mFormatArgs;
723                    args[0] = numsongs;
724                    builder.append(mResources.getQuantityString(R.plurals.Nsongs, numsongs, args));
725                } else {
726                    final Object[] args = mFormatArgs3;
727                    args[0] = numsongs;
728                    args[1] = numartistsongs;
729                    args[2] = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Artists.ARTIST));
730                    builder.append(mResources.getQuantityString(R.plurals.Nsongscomp, numsongs, args));
731                }
732            }
733            vh.line2.setText(builder.toString());
734
735            ImageView iv = vh.icon;
736            // We don't actually need the path to the thumbnail file,
737            // we just use it to see if there is album art or not
738            String art = cursor.getString(cursor.getColumnIndexOrThrow(
739                    MediaStore.Audio.Albums.ALBUM_ART));
740            if (unknown || art == null || art.length() == 0) {
741                iv.setBackgroundDrawable(mDefaultAlbumIcon);
742                iv.setImageDrawable(null);
743            } else {
744                long artIndex = cursor.getLong(0);
745                Drawable d = MusicUtils.getCachedArtwork(context, artIndex, mDefaultAlbumIcon);
746                iv.setImageDrawable(d);
747            }
748
749            long currentalbumid = MusicUtils.getCurrentAlbumId();
750            long aid = cursor.getLong(0);
751            iv = vh.play_indicator;
752            if (currentalbumid == aid) {
753                iv.setImageDrawable(mNowPlayingOverlay);
754            } else {
755                iv.setImageDrawable(null);
756            }
757        }
758
759
760        @Override
761        protected Cursor getChildrenCursor(Cursor groupCursor) {
762
763            long id = groupCursor.getLong(groupCursor.getColumnIndexOrThrow(MediaStore.Audio.Artists._ID));
764
765            String[] cols = new String[] {
766                    MediaStore.Audio.Albums._ID,
767                    MediaStore.Audio.Albums.ALBUM,
768                    MediaStore.Audio.Albums.NUMBER_OF_SONGS,
769                    MediaStore.Audio.Albums.NUMBER_OF_SONGS_FOR_ARTIST,
770                    MediaStore.Audio.Albums.ALBUM_ART
771            };
772            Cursor c = MusicUtils.query(mActivity,
773                    MediaStore.Audio.Artists.Albums.getContentUri("external", id),
774                    cols, null, null, MediaStore.Audio.Albums.DEFAULT_SORT_ORDER);
775
776            class MyCursorWrapper extends CursorWrapper {
777                String mArtistName;
778                int mMagicColumnIdx;
779                MyCursorWrapper(Cursor c, String artist) {
780                    super(c);
781                    mArtistName = artist;
782                    if (mArtistName == null || mArtistName.equals(MediaStore.UNKNOWN_STRING)) {
783                        mArtistName = mUnknownArtist;
784                    }
785                    mMagicColumnIdx = c.getColumnCount();
786                }
787
788                @Override
789                public String getString(int columnIndex) {
790                    if (columnIndex != mMagicColumnIdx) {
791                        return super.getString(columnIndex);
792                    }
793                    return mArtistName;
794                }
795
796                @Override
797                public int getColumnIndexOrThrow(String name) {
798                    if (MediaStore.Audio.Albums.ARTIST.equals(name)) {
799                        return mMagicColumnIdx;
800                    }
801                    return super.getColumnIndexOrThrow(name);
802                }
803
804                @Override
805                public String getColumnName(int idx) {
806                    if (idx != mMagicColumnIdx) {
807                        return super.getColumnName(idx);
808                    }
809                    return MediaStore.Audio.Albums.ARTIST;
810                }
811
812                @Override
813                public int getColumnCount() {
814                    return super.getColumnCount() + 1;
815                }
816            }
817            return new MyCursorWrapper(c, groupCursor.getString(mGroupArtistIdx));
818        }
819
820        @Override
821        public void changeCursor(Cursor cursor) {
822            if (mActivity.isFinishing() && cursor != null) {
823                cursor.close();
824                cursor = null;
825            }
826            if (cursor != mActivity.mArtistCursor) {
827                mActivity.mArtistCursor = cursor;
828                getColumnIndices(cursor);
829                super.changeCursor(cursor);
830            }
831        }
832
833        @Override
834        public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
835            String s = constraint.toString();
836            if (mConstraintIsValid && (
837                    (s == null && mConstraint == null) ||
838                    (s != null && s.equals(mConstraint)))) {
839                return getCursor();
840            }
841            Cursor c = mActivity.getArtistCursor(null, s);
842            mConstraint = s;
843            mConstraintIsValid = true;
844            return c;
845        }
846
847        public Object[] getSections() {
848            return mIndexer.getSections();
849        }
850
851        public int getPositionForSection(int sectionIndex) {
852            return mIndexer.getPositionForSection(sectionIndex);
853        }
854
855        public int getSectionForPosition(int position) {
856            return 0;
857        }
858    }
859
860    private Cursor mArtistCursor;
861
862    public void onServiceConnected(ComponentName name, IBinder service) {
863        MusicUtils.updateNowPlaying(this);
864    }
865
866    public void onServiceDisconnected(ComponentName name) {
867        finish();
868    }
869}
870
871