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 17 package com.android.music; 18 19 import android.app.Activity; 20 import android.content.ContentResolver; 21 import android.content.ContentUris; 22 import android.content.ContentValues; 23 import android.content.Intent; 24 import android.database.Cursor; 25 import android.media.AudioManager; 26 import android.net.Uri; 27 import android.os.Bundle; 28 import android.provider.MediaStore; 29 import android.text.Editable; 30 import android.text.TextWatcher; 31 import android.view.View; 32 import android.view.Window; 33 import android.view.WindowManager; 34 import android.widget.Button; 35 import android.widget.EditText; 36 import android.widget.TextView; 37 38 public class CreatePlaylist extends Activity 39 { 40 private EditText mPlaylist; 41 private TextView mPrompt; 42 private Button mSaveButton; 43 44 @Override 45 public void onCreate(Bundle icicle) { 46 super.onCreate(icicle); 47 setVolumeControlStream(AudioManager.STREAM_MUSIC); 48 49 requestWindowFeature(Window.FEATURE_NO_TITLE); 50 setContentView(R.layout.create_playlist); 51 getWindow().setLayout(WindowManager.LayoutParams.MATCH_PARENT, 52 WindowManager.LayoutParams.WRAP_CONTENT); 53 54 mPrompt = (TextView)findViewById(R.id.prompt); 55 mPlaylist = (EditText)findViewById(R.id.playlist); 56 mSaveButton = (Button) findViewById(R.id.create); 57 mSaveButton.setOnClickListener(mOpenClicked); 58 59 ((Button)findViewById(R.id.cancel)).setOnClickListener(new View.OnClickListener() { 60 public void onClick(View v) { 61 finish(); 62 } 63 }); 64 65 String defaultname = icicle != null ? icicle.getString("defaultname") : makePlaylistName(); 66 if (defaultname == null) { 67 finish(); 68 return; 69 } 70 String promptformat = getString(R.string.create_playlist_create_text_prompt); 71 String prompt = String.format(promptformat, defaultname); 72 mPrompt.setText(prompt); 73 mPlaylist.setText(defaultname); 74 mPlaylist.setSelection(defaultname.length()); 75 mPlaylist.addTextChangedListener(mTextWatcher); 76 } 77 78 TextWatcher mTextWatcher = new TextWatcher() { 79 public void beforeTextChanged(CharSequence s, int start, int count, int after) { 80 // don't care about this one 81 } 82 public void onTextChanged(CharSequence s, int start, int before, int count) { 83 String newText = mPlaylist.getText().toString(); 84 if (newText.trim().length() == 0) { 85 mSaveButton.setEnabled(false); 86 } else { 87 mSaveButton.setEnabled(true); 88 // check if playlist with current name exists already, and warn the user if so. 89 if (idForplaylist(newText) >= 0) { 90 mSaveButton.setText(R.string.create_playlist_overwrite_text); 91 } else { 92 mSaveButton.setText(R.string.create_playlist_create_text); 93 } 94 } 95 }; 96 public void afterTextChanged(Editable s) { 97 // don't care about this one 98 } 99 }; 100 101 private int idForplaylist(String name) { 102 Cursor c = MusicUtils.query(this, MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI, 103 new String[] { MediaStore.Audio.Playlists._ID }, 104 MediaStore.Audio.Playlists.NAME + "=?", 105 new String[] { name }, 106 MediaStore.Audio.Playlists.NAME); 107 int id = -1; 108 if (c != null) { 109 c.moveToFirst(); 110 if (!c.isAfterLast()) { 111 id = c.getInt(0); 112 } 113 c.close(); 114 } 115 return id; 116 } 117 118 @Override 119 public void onSaveInstanceState(Bundle outcicle) { 120 outcicle.putString("defaultname", mPlaylist.getText().toString()); 121 } 122 123 @Override 124 public void onResume() { 125 super.onResume(); 126 } 127 128 private String makePlaylistName() { 129 130 String template = getString(R.string.new_playlist_name_template); 131 int num = 1; 132 133 String[] cols = new String[] { 134 MediaStore.Audio.Playlists.NAME 135 }; 136 ContentResolver resolver = getContentResolver(); 137 String whereclause = MediaStore.Audio.Playlists.NAME + " != ''"; 138 Cursor c = resolver.query(MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI, 139 cols, whereclause, null, 140 MediaStore.Audio.Playlists.NAME); 141 142 if (c == null) { 143 return null; 144 } 145 146 String suggestedname; 147 suggestedname = String.format(template, num++); 148 149 // Need to loop until we've made 1 full pass through without finding a match. 150 // Looping more than once shouldn't happen very often, but will happen if 151 // you have playlists named "New Playlist 1"/10/2/3/4/5/6/7/8/9, where 152 // making only one pass would result in "New Playlist 10" being erroneously 153 // picked for the new name. 154 boolean done = false; 155 while (!done) { 156 done = true; 157 c.moveToFirst(); 158 while (! c.isAfterLast()) { 159 String playlistname = c.getString(0); 160 if (playlistname.compareToIgnoreCase(suggestedname) == 0) { 161 suggestedname = String.format(template, num++); 162 done = false; 163 } 164 c.moveToNext(); 165 } 166 } 167 c.close(); 168 return suggestedname; 169 } 170 171 private View.OnClickListener mOpenClicked = new View.OnClickListener() { 172 public void onClick(View v) { 173 String name = mPlaylist.getText().toString(); 174 if (name != null && name.length() > 0) { 175 ContentResolver resolver = getContentResolver(); 176 int id = idForplaylist(name); 177 Uri uri; 178 if (id >= 0) { 179 uri = ContentUris.withAppendedId(MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI, id); 180 MusicUtils.clearPlaylist(CreatePlaylist.this, id); 181 } else { 182 ContentValues values = new ContentValues(1); 183 values.put(MediaStore.Audio.Playlists.NAME, name); 184 uri = resolver.insert(MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI, values); 185 } 186 setResult(RESULT_OK, (new Intent()).setData(uri)); 187 finish(); 188 } 189 } 190 }; 191 } 192
