/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.music;
import com.android.music.MusicUtils.ServiceToken;
import android.app.ListActivity;
import android.content.AsyncQueryHandler;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.database.MergeCursor;
import android.database.sqlite.SQLiteException;
import android.media.AudioManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.provider.MediaStore;
import android.util.Log;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.AdapterContextMenuInfo;
import java.text.Collator;
import java.util.ArrayList;
public class PlaylistBrowserActivity extends ListActivity
implements View.OnCreateContextMenuListener, MusicUtils.Defs
{
private static final String TAG = "PlaylistBrowserActivity";
private static final int DELETE_PLAYLIST = CHILD_MENU_BASE + 1;
private static final int EDIT_PLAYLIST = CHILD_MENU_BASE + 2;
private static final int RENAME_PLAYLIST = CHILD_MENU_BASE + 3;
private static final int CHANGE_WEEKS = CHILD_MENU_BASE + 4;
private static final long RECENTLY_ADDED_PLAYLIST = -1;
private static final long ALL_SONGS_PLAYLIST = -2;
private static final long PODCASTS_PLAYLIST = -3;
private PlaylistListAdapter mAdapter;
boolean mAdapterSent;
private static int mLastListPosCourse = -1;
private static int mLastListPosFine = -1;
private boolean mCreateShortcut;
private ServiceToken mToken;
public PlaylistBrowserActivity()
{
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle)
{
super.onCreate(icicle);
final Intent intent = getIntent();
final String action = intent.getAction();
if (Intent.ACTION_CREATE_SHORTCUT.equals(action)) {
mCreateShortcut = true;
}
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setVolumeControlStream(AudioManager.STREAM_MUSIC);
mToken = MusicUtils.bindToService(this, new ServiceConnection() {
public void onServiceConnected(ComponentName classname, IBinder obj) {
if (Intent.ACTION_VIEW.equals(action)) {
Bundle b = intent.getExtras();
if (b == null) {
Log.w(TAG, "Unexpected:getExtras() returns null.");
} else {
try {
long id = Long.parseLong(b.getString("playlist"));
if (id == RECENTLY_ADDED_PLAYLIST) {
playRecentlyAdded();
} else if (id == PODCASTS_PLAYLIST) {
playPodcasts();
} else if (id == ALL_SONGS_PLAYLIST) {
long[] list = MusicUtils.getAllSongs(PlaylistBrowserActivity.this);
if (list != null) {
MusicUtils.playAll(PlaylistBrowserActivity.this, list, 0);
}
} else {
MusicUtils.playPlaylist(PlaylistBrowserActivity.this, id);
}
} catch (NumberFormatException e) {
Log.w(TAG, "Playlist id missing or broken");
}
}
finish();
return;
}
MusicUtils.updateNowPlaying(PlaylistBrowserActivity.this);
}
public void onServiceDisconnected(ComponentName classname) {
}
});
IntentFilter f = new IntentFilter();
f.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED);
f.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
f.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
f.addDataScheme("file");
registerReceiver(mScanListener, f);
setContentView(R.layout.media_picker_activity);
MusicUtils.updateButtonBar(this, R.id.playlisttab);
ListView lv = getListView();
lv.setOnCreateContextMenuListener(this);
lv.setTextFilterEnabled(true);
mAdapter = (PlaylistListAdapter) getLastNonConfigurationInstance();
if (mAdapter == null) {
//Log.i("@@@", "starting query");
mAdapter = new PlaylistListAdapter(
getApplication(),
this,
R.layout.track_list_item,
mPlaylistCursor,
new String[] { MediaStore.Audio.Playlists.NAME},
new int[] { android.R.id.text1 });
setListAdapter(mAdapter);
setTitle(R.string.working_playlists);
getPlaylistCursor(mAdapter.getQueryHandler(), null);
} else {
mAdapter.setActivity(this);
setListAdapter(mAdapter);
mPlaylistCursor = mAdapter.getCursor();
// If mPlaylistCursor is null, this can be because it doesn't have
// a cursor yet (because the initial query that sets its cursor
// is still in progress), or because the query failed.
// In order to not flash the error dialog at the user for the
// first case, simply retry the query when the cursor is null.
// Worst case, we end up doing the same query twice.
if (mPlaylistCursor != null) {
init(mPlaylistCursor);
} else {
setTitle(R.string.working_playlists);
getPlaylistCursor(mAdapter.getQueryHandler(), null);
}
}
}
@Override
public Object onRetainNonConfigurationInstance() {
PlaylistListAdapter a = mAdapter;
mAdapterSent = true;
return a;
}
@Override
public void onDestroy() {
ListView lv = getListView();
if (lv != null) {
mLastListPosCourse = lv.getFirstVisiblePosition();
View cv = lv.getChildAt(0);
if (cv != null) {
mLastListPosFine = cv.getTop();
}
}
MusicUtils.unbindFromService(mToken);
// If we have an adapter and didn't send it off to another activity yet, we should
// close its cursor, which we do by assigning a null cursor to it. Doing this
// instead of closing the cursor directly keeps the framework from accessing
// the closed cursor later.
if (!mAdapterSent && mAdapter != null) {
mAdapter.changeCursor(null);
}
// Because we pass the adapter to the next activity, we need to make
// sure it doesn't keep a reference to this activity. We can do this
// by clearing its DatasetObservers, which setListAdapter(null) does.
setListAdapter(null);
mAdapter = null;
unregisterReceiver(mScanListener);
super.onDestroy();
}
@Override
public void onResume() {
super.onResume();
MusicUtils.setSpinnerState(this);
MusicUtils.updateNowPlaying(PlaylistBrowserActivity.this);
}
@Override
public void onPause() {
mReScanHandler.removeCallbacksAndMessages(null);
super.onPause();
}
private BroadcastReceiver mScanListener = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
MusicUtils.setSpinnerState(PlaylistBrowserActivity.this);
mReScanHandler.sendEmptyMessage(0);
}
};
private Handler mReScanHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
if (mAdapter != null) {
getPlaylistCursor(mAdapter.getQueryHandler(), null);
}
}
};
public void init(Cursor cursor) {
if (mAdapter == null) {
return;
}
mAdapter.changeCursor(cursor);
if (mPlaylistCursor == null) {
MusicUtils.displayDatabaseError(this);
closeContextMenu();
mReScanHandler.sendEmptyMessageDelayed(0, 1000);
return;
}
// restore previous position
if (mLastListPosCourse >= 0) {
getListView().setSelectionFromTop(mLastListPosCourse, mLastListPosFine);
mLastListPosCourse = -1;
}
MusicUtils.hideDatabaseError(this);
MusicUtils.updateButtonBar(this, R.id.playlisttab);
setTitle();
}
private void setTitle() {
setTitle(R.string.playlists_title);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
if (!mCreateShortcut) {
menu.add(0, PARTY_SHUFFLE, 0, R.string.party_shuffle); // icon will be set in onPrepareOptionsMenu()
}
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
MusicUtils.setPartyShuffleMenuIcon(menu);
return super.onPrepareOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Intent intent;
switch (item.getItemId()) {
case PARTY_SHUFFLE:
MusicUtils.togglePartyShuffle();
break;
}
return super.onOptionsItemSelected(item);
}
public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo menuInfoIn) {
if (mCreateShortcut) {
return;
}
AdapterContextMenuInfo mi = (AdapterContextMenuInfo) menuInfoIn;
menu.add(0, PLAY_SELECTION, 0, R.string.play_selection);
if (mi.id >= 0 /*|| mi.id == PODCASTS_PLAYLIST*/) {
menu.add(0, DELETE_PLAYLIST, 0, R.string.delete_playlist_menu);
}
if (mi.id == RECENTLY_ADDED_PLAYLIST) {
menu.add(0, EDIT_PLAYLIST, 0, R.string.edit_playlist_menu);
}
if (mi.id >= 0) {
menu.add(0, RENAME_PLAYLIST, 0, R.string.rename_playlist_menu);
}
mPlaylistCursor.moveToPosition(mi.position);
menu.setHeaderTitle(mPlaylistCursor.getString(mPlaylistCursor.getColumnIndexOrThrow(
MediaStore.Audio.Playlists.NAME)));
}
@Override
public boolean onContextItemSelected(MenuItem item) {
AdapterContextMenuInfo mi = (AdapterContextMenuInfo) item.getMenuInfo();
switch (item.getItemId()) {
case PLAY_SELECTION:
if (mi.id == RECENTLY_ADDED_PLAYLIST) {
playRecentlyAdded();
} else if (mi.id == PODCASTS_PLAYLIST) {
playPodcasts();
} else {
MusicUtils.playPlaylist(this, mi.id);
}
break;
case DELETE_PLAYLIST:
Uri uri = ContentUris.withAppendedId(
MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI, mi.id);
getContentResolver().delete(uri, null, null);
Toast.makeText(this, R.string.playlist_deleted_message, Toast.LENGTH_SHORT).show();
if (mPlaylistCursor.getCount() == 0) {
setTitle(R.string.no_playlists_title);
}
break;
case EDIT_PLAYLIST:
if (mi.id == RECENTLY_ADDED_PLAYLIST) {
Intent intent = new Intent();
intent.setClass(this, WeekSelector.class);
startActivityForResult(intent, CHANGE_WEEKS);
return true;
} else {
Log.e(TAG, "should not be here");
}
break;
case RENAME_PLAYLIST:
Intent intent = new Intent();
intent.setClass(this, RenamePlaylist.class);
intent.putExtra("rename", mi.id);
startActivityForResult(intent, RENAME_PLAYLIST);
break;
}
return true;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
switch (requestCode) {
case SCAN_DONE:
if (resultCode == RESULT_CANCELED) {
finish();
} else if (mAdapter != null) {
getPlaylistCursor(mAdapter.getQueryHandler(), null);
}
break;
}
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id)
{
if (mCreateShortcut) {
final Intent shortcut = new Intent();
shortcut.setAction(Intent.ACTION_VIEW);
shortcut.setDataAndType(Uri.EMPTY, "vnd.android.cursor.dir/playlist");
shortcut.putExtra("playlist", String.valueOf(id));
final Intent intent = new Intent();
intent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcut);
intent.putExtra(Intent.EXTRA_SHORTCUT_NAME, ((TextView) v.findViewById(R.id.line1)).getText());
intent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource.fromContext(
this, R.drawable.ic_launcher_shortcut_music_playlist));
setResult(RESULT_OK, intent);
finish();
return;
}
if (id == RECENTLY_ADDED_PLAYLIST) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setDataAndType(Uri.EMPTY, "vnd.android.cursor.dir/track");
intent.putExtra("playlist", "recentlyadded");
startActivity(intent);
} else if (id == PODCASTS_PLAYLIST) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setDataAndType(Uri.EMPTY, "vnd.android.cursor.dir/track");
intent.putExtra("playlist", "podcasts");
startActivity(intent);
} else {
Intent intent = new Intent(Intent.ACTION_EDIT);
intent.setDataAndType(Uri.EMPTY, "vnd.android.cursor.dir/track");
intent.putExtra("playlist", Long.valueOf(id).toString());
startActivity(intent);
}
}
private void playRecentlyAdded() {
// do a query for all songs added in the last X weeks
int X = MusicUtils.getIntPref(this, "numweeks", 2) * (3600 * 24 * 7);
final String[] ccols = new String[] { MediaStore.Audio.Media._ID};
String where = MediaStore.MediaColumns.DATE_ADDED + ">" + (System.currentTimeMillis() / 1000 - X);
Cursor cursor = MusicUtils.query(this, MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
ccols, where, null, MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
if (cursor == null) {
// Todo: show a message
return;
}
try {
int len = cursor.getCount();
long [] list = new long[len];
for (int i = 0; i < len; i++) {
cursor.moveToNext();
list[i] = cursor.getLong(0);
}
MusicUtils.playAll(this, list, 0);
} catch (SQLiteException ex) {
} finally {
cursor.close();
}
}
private void playPodcasts() {
// do a query for all files that are podcasts
final String[] ccols = new String[] { MediaStore.Audio.Media._ID};
Cursor cursor = MusicUtils.query(this, MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
ccols, MediaStore.Audio.Media.IS_PODCAST + "=1",
null, MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
if (cursor == null) {
// Todo: show a message
return;
}
try {
int len = cursor.getCount();
long [] list = new long[len];
for (int i = 0; i < len; i++) {
cursor.moveToNext();
list[i] = cursor.getLong(0);
}
MusicUtils.playAll(this, list, 0);
} catch (SQLiteException ex) {
} finally {
cursor.close();
}
}
String[] mCols = new String[] {
MediaStore.Audio.Playlists._ID,
MediaStore.Audio.Playlists.NAME
};
private Cursor getPlaylistCursor(AsyncQueryHandler async, String filterstring) {
StringBuilder where = new StringBuilder();
where.append(MediaStore.Audio.Playlists.NAME + " != ''");
// Add in the filtering constraints
String [] keywords = null;
if (filterstring != null) {
String [] searchWords = filterstring.split(" ");
keywords = new String[searchWords.length];
Collator col = Collator.getInstance();
col.setStrength(Collator.PRIMARY);
for (int i = 0; i < searchWords.length; i++) {
keywords[i] = '%' + searchWords[i] + '%';
}
for (int i = 0; i < searchWords.length; i++) {
where.append(" AND ");
where.append(MediaStore.Audio.Playlists.NAME + " LIKE ?");
}
}
String whereclause = where.toString();
if (async != null) {
async.startQuery(0, null, MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI,
mCols, whereclause, keywords, MediaStore.Audio.Playlists.NAME);
return null;
}
Cursor c = null;
c = MusicUtils.query(this, MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI,
mCols, whereclause, keywords, MediaStore.Audio.Playlists.NAME);
return mergedCursor(c);
}
private Cursor mergedCursor(Cursor c) {
if (c == null) {
return null;
}
if (c instanceof MergeCursor) {
// this shouldn't happen, but fail gracefully
Log.d("PlaylistBrowserActivity", "Already wrapped");
return c;
}
MatrixCursor autoplaylistscursor = new MatrixCursor(mCols);
if (mCreateShortcut) {
ArrayList<Object> all = new ArrayList<Object>(2);
all.add(ALL_SONGS_PLAYLIST);
all.add(getString(R.string.play_all));
autoplaylistscursor.addRow(all);
}
ArrayList<Object> recent = new ArrayList<Object>(2);
recent.add(RECENTLY_ADDED_PLAYLIST);
recent.add(getString(R.string.recentlyadded));
autoplaylistscursor.addRow(recent);
// check if there are any podcasts
Cursor counter = MusicUtils.query(this, MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
new String[] {"count(*)"}, "is_podcast=1", null, null);
if (counter != null) {
counter.moveToFirst();
int numpodcasts = counter.getInt(0);
counter.close();
if (numpodcasts > 0) {
ArrayList<Object> podcasts = new ArrayList<Object>(2);
podcasts.add(PODCASTS_PLAYLIST);
podcasts.add(getString(R.string.podcasts_listitem));
autoplaylistscursor.addRow(podcasts);
}
}
Cursor cc = new MergeCursor(new Cursor [] {autoplaylistscursor, c});
return cc;
}
static class PlaylistListAdapter extends SimpleCursorAdapter {
int mTitleIdx;
int mIdIdx;
private PlaylistBrowserActivity mActivity = null;
private AsyncQueryHandler mQueryHandler;
private String mConstraint = null;
private boolean mConstraintIsValid = false;
class QueryHandler extends AsyncQueryHandler {
QueryHandler(ContentResolver res) {
super(res);
}
@Override
protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
//Log.i("@@@", "query complete: " + cursor.getCount() + " " + mActivity);
if (cursor != null) {
cursor = mActivity.mergedCursor(cursor);
}
mActivity.init(cursor);
}
}
PlaylistListAdapter(Context context, PlaylistBrowserActivity currentactivity,
int layout, Cursor cursor, String[] from, int[] to) {
super(context, layout, cursor, from, to);
mActivity = currentactivity;
getColumnIndices(cursor);
mQueryHandler = new QueryHandler(context.getContentResolver());
}
private void getColumnIndices(Cursor cursor) {
if (cursor != null) {
mTitleIdx = cursor.getColumnIndexOrThrow(MediaStore.Audio.Playlists.NAME);
mIdIdx = cursor.getColumnIndexOrThrow(MediaStore.Audio.Playlists._ID);
}
}
public void setActivity(PlaylistBrowserActivity newactivity) {
mActivity = newactivity;
}
public AsyncQueryHandler getQueryHandler() {
return mQueryHandler;
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
TextView tv = (TextView) view.findViewById(R.id.line1);
String name = cursor.getString(mTitleIdx);
tv.setText(name);
long id = cursor.getLong(mIdIdx);
ImageView iv = (ImageView) view.findViewById(R.id.icon);
if (id == RECENTLY_ADDED_PLAYLIST) {
iv.setImageResource(R.drawable.ic_mp_playlist_recently_added_list);
} else {
iv.setImageResource(R.drawable.ic_mp_playlist_list);
}
ViewGroup.LayoutParams p = iv.getLayoutParams();
p.width = ViewGroup.LayoutParams.WRAP_CONTENT;
p.height = ViewGroup.LayoutParams.WRAP_CONTENT;
iv = (ImageView) view.findViewById(R.id.play_indicator);
iv.setVisibility(View.GONE);
view.findViewById(R.id.line2).setVisibility(View.GONE);
}
@Override
public void changeCursor(Cursor cursor) {
if (mActivity.isFinishing() && cursor != null) {
cursor.close();
cursor = null;
}
if (cursor != mActivity.mPlaylistCursor) {
mActivity.mPlaylistCursor = cursor;
super.changeCursor(cursor);
getColumnIndices(cursor);
}
}
@Override
public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
String s = constraint.toString();
if (mConstraintIsValid && (
(s == null && mConstraint == null) ||
(s != null && s.equals(mConstraint)))) {
return getCursor();
}
Cursor c = mActivity.getPlaylistCursor(null, s);
mConstraint = s;
mConstraintIsValid = true;
return c;
}
}
private Cursor mPlaylistCursor;
}