1/*
2 * Copyright (C) 2008 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 android.app.Activity;
20import android.content.ContentResolver;
21import android.content.ContentValues;
22import android.database.Cursor;
23import android.media.AudioManager;
24import android.os.Bundle;
25import android.provider.MediaStore;
26import android.text.Editable;
27import android.text.TextWatcher;
28import android.util.Log;
29import android.view.View;
30import android.view.Window;
31import android.view.WindowManager;
32import android.widget.Button;
33import android.widget.EditText;
34import android.widget.TextView;
35import android.widget.Toast;
36
37public class RenamePlaylist extends Activity {
38    private EditText mPlaylist;
39    private TextView mPrompt;
40    private Button mSaveButton;
41    private long mRenameId;
42    private String mOriginalName;
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(
52                WindowManager.LayoutParams.MATCH_PARENT, 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        mRenameId =
66                icicle != null ? icicle.getLong("rename") : getIntent().getLongExtra("rename", -1);
67        mOriginalName = nameForId(mRenameId);
68        String defaultname = icicle != null ? icicle.getString("defaultname") : mOriginalName;
69
70        if (mRenameId < 0 || mOriginalName == null || defaultname == null) {
71            Log.i("@@@@", "Rename failed: " + mRenameId + "/" + defaultname);
72            finish();
73            return;
74        }
75
76        String promptformat;
77        if (mOriginalName.equals(defaultname)) {
78            promptformat = getString(R.string.rename_playlist_same_prompt);
79        } else {
80            promptformat = getString(R.string.rename_playlist_diff_prompt);
81        }
82
83        String prompt = String.format(promptformat, mOriginalName, defaultname);
84        mPrompt.setText(prompt);
85        mPlaylist.setText(defaultname);
86        mPlaylist.setSelection(defaultname.length());
87        mPlaylist.addTextChangedListener(mTextWatcher);
88        setSaveButton();
89    }
90
91    TextWatcher mTextWatcher = new TextWatcher() {
92        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
93            // don't care about this one
94        }
95        public void onTextChanged(CharSequence s, int start, int before, int count) {
96            // check if playlist with current name exists already, and warn the user if so.
97            setSaveButton();
98        };
99        public void afterTextChanged(Editable s) {
100            // don't care about this one
101        }
102    };
103
104    private void setSaveButton() {
105        String typedname = mPlaylist.getText().toString();
106        if (typedname.trim().length() == 0) {
107            mSaveButton.setEnabled(false);
108        } else {
109            mSaveButton.setEnabled(true);
110            if (idForplaylist(typedname) >= 0 && !mOriginalName.equals(typedname)) {
111                mSaveButton.setText(R.string.create_playlist_overwrite_text);
112            } else {
113                mSaveButton.setText(R.string.create_playlist_create_text);
114            }
115        }
116    }
117
118    private int idForplaylist(String name) {
119        Cursor c = MusicUtils.query(this, MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI,
120                new String[] {MediaStore.Audio.Playlists._ID},
121                MediaStore.Audio.Playlists.NAME + "=?", new String[] {name},
122                MediaStore.Audio.Playlists.NAME);
123        int id = -1;
124        if (c != null) {
125            c.moveToFirst();
126            if (!c.isAfterLast()) {
127                id = c.getInt(0);
128            }
129        }
130        c.close();
131        return id;
132    }
133
134    private String nameForId(long id) {
135        Cursor c = MusicUtils.query(this, MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI,
136                new String[] {MediaStore.Audio.Playlists.NAME},
137                MediaStore.Audio.Playlists._ID + "=?", new String[] {Long.valueOf(id).toString()},
138                MediaStore.Audio.Playlists.NAME);
139        String name = null;
140        if (c != null) {
141            c.moveToFirst();
142            if (!c.isAfterLast()) {
143                name = c.getString(0);
144            }
145        }
146        c.close();
147        return name;
148    }
149
150    @Override
151    public void onSaveInstanceState(Bundle outcicle) {
152        outcicle.putString("defaultname", mPlaylist.getText().toString());
153        outcicle.putLong("rename", mRenameId);
154    }
155
156    @Override
157    public void onResume() {
158        super.onResume();
159    }
160
161    private View.OnClickListener mOpenClicked = new View.OnClickListener() {
162        public void onClick(View v) {
163            String name = mPlaylist.getText().toString();
164            if (name != null && name.length() > 0) {
165                ContentResolver resolver = getContentResolver();
166                ContentValues values = new ContentValues(1);
167                values.put(MediaStore.Audio.Playlists.NAME, name);
168                resolver.update(MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI, values,
169                        MediaStore.Audio.Playlists._ID + "=?",
170                        new String[] {Long.valueOf(mRenameId).toString()});
171
172                setResult(RESULT_OK);
173                Toast.makeText(RenamePlaylist.this, R.string.playlist_renamed_message,
174                             Toast.LENGTH_SHORT)
175                        .show();
176                finish();
177            }
178        }
179    };
180}
181