1/*
2 * Copyright (C) 2012 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.settings;
18
19import android.app.Activity;
20import android.app.ActivityManager;
21import android.content.ComponentName;
22import android.service.notification.INotificationListener;
23import android.app.INotificationManager;
24import android.app.Notification;
25import android.service.notification.StatusBarNotification;
26import android.content.BroadcastReceiver;
27import android.content.Context;
28import android.content.Intent;
29import android.content.IntentFilter;
30import android.content.pm.ApplicationInfo;
31import android.content.pm.PackageManager;
32import android.content.res.Resources;
33import android.graphics.drawable.Drawable;
34import android.net.Uri;
35import android.os.Bundle;
36import android.os.Handler;
37import android.os.RemoteException;
38import android.os.ServiceManager;
39import android.os.UserHandle;
40import android.util.Log;
41import android.view.LayoutInflater;
42import android.view.View;
43import android.view.View.OnClickListener;
44import android.view.ViewGroup;
45import android.widget.ArrayAdapter;
46import android.widget.DateTimeView;
47import android.widget.ImageView;
48import android.widget.ListView;
49import android.widget.TextView;
50
51import java.util.ArrayList;
52import java.util.Comparator;
53import java.util.List;
54
55public class NotificationStation extends SettingsPreferenceFragment {
56    private static final String TAG = NotificationStation.class.getSimpleName();
57    static final boolean DEBUG = true;
58    private static final String PACKAGE_SCHEME = "package";
59    private static final boolean SHOW_HISTORICAL_NOTIFICATIONS = true;
60
61    private final PackageReceiver mPackageReceiver = new PackageReceiver();
62    private PackageManager mPm;
63    private INotificationManager mNoMan;
64
65    private Runnable mRefreshListRunnable = new Runnable() {
66        @Override
67        public void run() {
68            refreshList();
69        }
70    };
71
72    private INotificationListener.Stub mListener = new INotificationListener.Stub() {
73        @Override
74        public void onNotificationPosted(StatusBarNotification notification) throws RemoteException {
75            Log.v(TAG, "onNotificationPosted: " + notification);
76            final Handler h = getListView().getHandler();
77            h.removeCallbacks(mRefreshListRunnable);
78            h.postDelayed(mRefreshListRunnable, 100);
79        }
80
81        @Override
82        public void onNotificationRemoved(StatusBarNotification notification) throws RemoteException {
83            final Handler h = getListView().getHandler();
84            h.removeCallbacks(mRefreshListRunnable);
85            h.postDelayed(mRefreshListRunnable, 100);
86        }
87    };
88
89    private NotificationHistoryAdapter mAdapter;
90    private Context mContext;
91
92    private final Comparator<HistoricalNotificationInfo> mNotificationSorter
93            = new Comparator<HistoricalNotificationInfo>() {
94                @Override
95                public int compare(HistoricalNotificationInfo lhs,
96                                   HistoricalNotificationInfo rhs) {
97                    return (int)(rhs.timestamp - lhs.timestamp);
98                }
99            };
100
101    @Override
102    public void onAttach(Activity activity) {
103        logd("onAttach(%s)", activity.getClass().getSimpleName());
104        super.onAttach(activity);
105        mContext = activity;
106        mPm = mContext.getPackageManager();
107        mNoMan = INotificationManager.Stub.asInterface(
108                ServiceManager.getService(Context.NOTIFICATION_SERVICE));
109        try {
110            mNoMan.registerListener(mListener,
111                    new ComponentName(mContext.getPackageName(),
112                            this.getClass().getCanonicalName()),
113                    ActivityManager.getCurrentUser());
114        } catch (RemoteException e) {
115            // well, that didn't work out
116        }
117    }
118
119    @Override
120    public void onCreate(Bundle icicle) {
121        logd("onCreate(%s)", icicle);
122        super.onCreate(icicle);
123        Activity activity = getActivity();
124    }
125
126    @Override
127    public void onDestroyView() {
128        super.onDestroyView();
129    }
130
131    @Override
132    public void onActivityCreated(Bundle savedInstanceState) {
133        logd("onActivityCreated(%s)", savedInstanceState);
134        super.onActivityCreated(savedInstanceState);
135
136        ListView listView = getListView();
137
138//        TextView emptyView = (TextView) getView().findViewById(android.R.id.empty);
139//        emptyView.setText(R.string.screensaver_settings_disabled_prompt);
140//        listView.setEmptyView(emptyView);
141
142        mAdapter = new NotificationHistoryAdapter(mContext);
143        listView.setAdapter(mAdapter);
144    }
145
146    @Override
147    public void onPause() {
148        logd("onPause()");
149        super.onPause();
150        mContext.unregisterReceiver(mPackageReceiver);
151    }
152
153    @Override
154    public void onResume() {
155        logd("onResume()");
156        super.onResume();
157        refreshList();
158
159        // listen for package changes
160        IntentFilter filter = new IntentFilter();
161        filter.addAction(Intent.ACTION_PACKAGE_ADDED);
162        filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
163        filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
164        filter.addAction(Intent.ACTION_PACKAGE_REPLACED);
165        filter.addDataScheme(PACKAGE_SCHEME);
166        mContext.registerReceiver(mPackageReceiver , filter);
167    }
168
169    private void refreshList() {
170        List<HistoricalNotificationInfo> infos = loadNotifications();
171        if (infos != null) {
172            logd("adding %d infos", infos.size());
173            mAdapter.clear();
174            mAdapter.addAll(infos);
175            mAdapter.sort(mNotificationSorter);
176        }
177    }
178
179    private static void logd(String msg, Object... args) {
180        if (DEBUG)
181            Log.d(TAG, args == null || args.length == 0 ? msg : String.format(msg, args));
182    }
183
184    private static class HistoricalNotificationInfo {
185        public String pkg;
186        public Drawable pkgicon;
187        public CharSequence pkgname;
188        public Drawable icon;
189        public CharSequence title;
190        public int priority;
191        public int user;
192        public long timestamp;
193        public boolean active;
194    }
195
196    private List<HistoricalNotificationInfo> loadNotifications() {
197        final int currentUserId = ActivityManager.getCurrentUser();
198        try {
199            StatusBarNotification[] active = mNoMan.getActiveNotifications(mContext.getPackageName());
200            StatusBarNotification[] dismissed = mNoMan.getHistoricalNotifications(mContext.getPackageName(), 50);
201
202            List<HistoricalNotificationInfo> list
203                    = new ArrayList<HistoricalNotificationInfo>(active.length + dismissed.length);
204
205            for (StatusBarNotification[] resultset
206                    : new StatusBarNotification[][] { active, dismissed }) {
207                for (StatusBarNotification sbn : resultset) {
208                    final HistoricalNotificationInfo info = new HistoricalNotificationInfo();
209                    info.pkg = sbn.getPackageName();
210                    info.user = sbn.getUserId();
211                    info.icon = loadIconDrawable(info.pkg, info.user, sbn.getNotification().icon);
212                    info.pkgicon = loadPackageIconDrawable(info.pkg, info.user);
213                    info.pkgname = loadPackageName(info.pkg);
214                    if (sbn.getNotification().extras != null) {
215                        info.title = sbn.getNotification().extras.getString(Notification.EXTRA_TITLE);
216                        if (info.title == null || "".equals(info.title)) {
217                            info.title = sbn.getNotification().extras.getString(Notification.EXTRA_TEXT);
218                        }
219                    }
220                    if (info.title == null || "".equals(info.title)) {
221                        info.title = sbn.getNotification().tickerText;
222                    }
223                    // still nothing? come on, give us something!
224                    if (info.title == null || "".equals(info.title)) {
225                        info.title = info.pkgname;
226                    }
227                    info.timestamp = sbn.getPostTime();
228                    info.priority = sbn.getNotification().priority;
229                    logd("   [%d] %s: %s", info.timestamp, info.pkg, info.title);
230
231                    info.active = (resultset == active);
232
233                    if (info.user == UserHandle.USER_ALL
234                            || info.user == currentUserId) {
235                        list.add(info);
236                    }
237                }
238            }
239
240            return list;
241        } catch (RemoteException e) {
242            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
243        }
244        return null;
245    }
246
247    private Resources getResourcesForUserPackage(String pkg, int userId) {
248        Resources r = null;
249
250        if (pkg != null) {
251            try {
252                if (userId == UserHandle.USER_ALL) {
253                    userId = UserHandle.USER_OWNER;
254                }
255                r = mPm.getResourcesForApplicationAsUser(pkg, userId);
256            } catch (PackageManager.NameNotFoundException ex) {
257                Log.e(TAG, "Icon package not found: " + pkg);
258                return null;
259            }
260        } else {
261            r = mContext.getResources();
262        }
263        return r;
264    }
265
266    private Drawable loadPackageIconDrawable(String pkg, int userId) {
267        Drawable icon = null;
268        try {
269            icon = mPm.getApplicationIcon(pkg);
270        } catch (PackageManager.NameNotFoundException e) {
271        }
272
273        return icon;
274    }
275
276    private CharSequence loadPackageName(String pkg) {
277        try {
278            ApplicationInfo info = mPm.getApplicationInfo(pkg,
279                    PackageManager.GET_UNINSTALLED_PACKAGES);
280            if (info != null) return mPm.getApplicationLabel(info);
281        } catch (PackageManager.NameNotFoundException e) {
282        }
283        return pkg;
284    }
285
286    private Drawable loadIconDrawable(String pkg, int userId, int resId) {
287        Resources r = getResourcesForUserPackage(pkg, userId);
288
289        if (resId == 0) {
290            return null;
291        }
292
293        try {
294            return r.getDrawable(resId);
295        } catch (RuntimeException e) {
296            Log.w(TAG, "Icon not found in "
297                    + (pkg != null ? resId : "<system>")
298                    + ": " + Integer.toHexString(resId));
299        }
300
301        return null;
302    }
303
304    private class NotificationHistoryAdapter extends ArrayAdapter<HistoricalNotificationInfo> {
305        private final LayoutInflater mInflater;
306
307        public NotificationHistoryAdapter(Context context) {
308            super(context, 0);
309            mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
310        }
311
312        @Override
313        public View getView(int position, View convertView, ViewGroup parent) {
314            final HistoricalNotificationInfo info = getItem(position);
315            logd("getView(%s/%s)", info.pkg, info.title);
316            final View row = convertView != null ? convertView : createRow(parent);
317            row.setTag(info);
318
319            // bind icon
320            if (info.icon != null) {
321                ((ImageView) row.findViewById(android.R.id.icon)).setImageDrawable(info.icon);
322            }
323            if (info.pkgicon != null) {
324                ((ImageView) row.findViewById(R.id.pkgicon)).setImageDrawable(info.pkgicon);
325            }
326
327            ((DateTimeView) row.findViewById(R.id.timestamp)).setTime(info.timestamp);
328
329            // bind caption
330            ((TextView) row.findViewById(android.R.id.title)).setText(info.title);
331
332            // app name
333            ((TextView) row.findViewById(R.id.pkgname)).setText(info.pkgname);
334
335            // extra goodies -- not implemented yet
336//            ((TextView) row.findViewById(R.id.extra)).setText(
337//              ...
338//            );
339            row.findViewById(R.id.extra).setVisibility(View.GONE);
340
341            row.setAlpha(info.active ? 1.0f : 0.5f);
342
343            // set up click handler
344            row.setOnClickListener(new OnClickListener(){
345                @Override
346                public void onClick(View v) {
347                    v.setPressed(true);
348                    startApplicationDetailsActivity(info.pkg);
349                }});
350
351//            // bind radio button
352//            RadioButton radioButton = (RadioButton) row.findViewById(android.R.id.button1);
353//            radioButton.setChecked(dreamInfo.isActive);
354//            radioButton.setOnTouchListener(new OnTouchListener() {
355//                @Override
356//                public boolean onTouch(View v, MotionEvent event) {
357//                    row.onTouchEvent(event);
358//                    return false;
359//                }});
360
361            // bind settings button + divider
362//            boolean showSettings = info.
363//                    settingsComponentName != null;
364//            View settingsDivider = row.findViewById(R.id.divider);
365//            settingsDivider.setVisibility(false ? View.VISIBLE : View.INVISIBLE);
366//
367//            ImageView settingsButton = (ImageView) row.findViewById(android.R.id.button2);
368//            settingsButton.setVisibility(false ? View.VISIBLE : View.INVISIBLE);
369//            settingsButton.setAlpha(info.isActive ? 1f : Utils.DISABLED_ALPHA);
370//            settingsButton.setEnabled(info.isActive);
371//            settingsButton.setOnClickListener(new OnClickListener(){
372//                @Override
373//                public void onClick(View v) {
374//                    mBackend.launchSettings((DreamInfo) row.getTag());
375//                }});
376
377            return row;
378        }
379
380        private View createRow(ViewGroup parent) {
381            final View row =  mInflater.inflate(R.layout.notification_log_row, parent, false);
382            return row;
383        }
384
385    }
386
387    private void startApplicationDetailsActivity(String packageName) {
388        Intent intent = new Intent(android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
389                Uri.fromParts("package", packageName, null));
390        intent.setComponent(intent.resolveActivity(mPm));
391        startActivity(intent);
392    }
393
394    private class PackageReceiver extends BroadcastReceiver {
395        @Override
396        public void onReceive(Context context, Intent intent) {
397            logd("PackageReceiver.onReceive");
398            //refreshList();
399        }
400    }
401}
402