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.notification;
18
19import android.app.Activity;
20import android.app.ActivityManager;
21import android.app.INotificationManager;
22import android.app.Notification;
23import android.content.ComponentName;
24import android.content.Context;
25import android.content.Intent;
26import android.content.pm.ApplicationInfo;
27import android.content.pm.PackageManager;
28import android.content.res.Resources;
29import android.graphics.drawable.Drawable;
30import android.net.Uri;
31import android.os.Bundle;
32import android.os.Handler;
33import android.os.RemoteException;
34import android.os.ServiceManager;
35import android.os.UserHandle;
36import android.service.notification.NotificationListenerService;
37import android.service.notification.StatusBarNotification;
38import android.util.Log;
39import android.view.LayoutInflater;
40import android.view.View;
41import android.view.View.OnClickListener;
42import android.view.ViewGroup;
43import android.widget.ArrayAdapter;
44import android.widget.DateTimeView;
45import android.widget.ImageView;
46import android.widget.ListView;
47import android.widget.TextView;
48
49import com.android.settings.R;
50import com.android.settings.SettingsPreferenceFragment;
51import com.android.settings.Utils;
52
53import java.util.ArrayList;
54import java.util.Comparator;
55import java.util.List;
56
57public class NotificationStation extends SettingsPreferenceFragment {
58    private static final String TAG = NotificationStation.class.getSimpleName();
59
60    private static final boolean DEBUG = false;
61
62    private static class HistoricalNotificationInfo {
63        public String pkg;
64        public Drawable pkgicon;
65        public CharSequence pkgname;
66        public Drawable icon;
67        public CharSequence title;
68        public int priority;
69        public int user;
70        public long timestamp;
71        public boolean active;
72    }
73
74    private PackageManager mPm;
75    private INotificationManager mNoMan;
76
77    private Runnable mRefreshListRunnable = new Runnable() {
78        @Override
79        public void run() {
80            refreshList();
81        }
82    };
83
84    private NotificationListenerService mListener = new NotificationListenerService() {
85        @Override
86        public void onNotificationPosted(StatusBarNotification notification) {
87            logd("onNotificationPosted: %s", notification);
88            final Handler h = getListView().getHandler();
89            h.removeCallbacks(mRefreshListRunnable);
90            h.postDelayed(mRefreshListRunnable, 100);
91        }
92
93        @Override
94        public void onNotificationRemoved(StatusBarNotification notification) {
95            final Handler h = getListView().getHandler();
96            h.removeCallbacks(mRefreshListRunnable);
97            h.postDelayed(mRefreshListRunnable, 100);
98        }
99    };
100
101    private NotificationHistoryAdapter mAdapter;
102    private Context mContext;
103
104    private final Comparator<HistoricalNotificationInfo> mNotificationSorter
105            = new Comparator<HistoricalNotificationInfo>() {
106                @Override
107                public int compare(HistoricalNotificationInfo lhs,
108                                   HistoricalNotificationInfo rhs) {
109                    return (int)(rhs.timestamp - lhs.timestamp);
110                }
111            };
112
113    @Override
114    public void onAttach(Activity activity) {
115        logd("onAttach(%s)", activity.getClass().getSimpleName());
116        super.onAttach(activity);
117        mContext = activity;
118        mPm = mContext.getPackageManager();
119        mNoMan = INotificationManager.Stub.asInterface(
120                ServiceManager.getService(Context.NOTIFICATION_SERVICE));
121        try {
122            mListener.registerAsSystemService(mContext, new ComponentName(mContext.getPackageName(),
123                    this.getClass().getCanonicalName()), ActivityManager.getCurrentUser());
124        } catch (RemoteException e) {
125            Log.e(TAG, "Cannot register listener", e);
126        }
127    }
128
129    @Override
130    public void onDetach() {
131        try {
132            mListener.unregisterAsSystemService();
133        } catch (RemoteException e) {
134            Log.e(TAG, "Cannot unregister listener", e);
135        }
136        super.onDetach();
137    }
138
139    @Override
140    public void onActivityCreated(Bundle savedInstanceState) {
141        logd("onActivityCreated(%s)", savedInstanceState);
142        super.onActivityCreated(savedInstanceState);
143
144        ListView listView = getListView();
145        Utils.forceCustomPadding(listView, false /* non additive padding */);
146
147        mAdapter = new NotificationHistoryAdapter(mContext);
148        listView.setAdapter(mAdapter);
149    }
150
151    @Override
152    public void onResume() {
153        logd("onResume()");
154        super.onResume();
155        refreshList();
156    }
157
158    private void refreshList() {
159        List<HistoricalNotificationInfo> infos = loadNotifications();
160        if (infos != null) {
161            logd("adding %d infos", infos.size());
162            mAdapter.clear();
163            mAdapter.addAll(infos);
164            mAdapter.sort(mNotificationSorter);
165        }
166    }
167
168    private static void logd(String msg, Object... args) {
169        if (DEBUG) {
170            Log.d(TAG, args == null || args.length == 0 ? msg : String.format(msg, args));
171        }
172    }
173
174    private List<HistoricalNotificationInfo> loadNotifications() {
175        final int currentUserId = ActivityManager.getCurrentUser();
176        try {
177            StatusBarNotification[] active = mNoMan.getActiveNotifications(
178                    mContext.getPackageName());
179            StatusBarNotification[] dismissed = mNoMan.getHistoricalNotifications(
180                    mContext.getPackageName(), 50);
181
182            List<HistoricalNotificationInfo> list
183                    = new ArrayList<HistoricalNotificationInfo>(active.length + dismissed.length);
184
185            for (StatusBarNotification[] resultset
186                    : new StatusBarNotification[][] { active, dismissed }) {
187                for (StatusBarNotification sbn : resultset) {
188                    final HistoricalNotificationInfo info = new HistoricalNotificationInfo();
189                    info.pkg = sbn.getPackageName();
190                    info.user = sbn.getUserId();
191                    info.icon = loadIconDrawable(info.pkg, info.user, sbn.getNotification().icon);
192                    info.pkgicon = loadPackageIconDrawable(info.pkg, info.user);
193                    info.pkgname = loadPackageName(info.pkg);
194                    if (sbn.getNotification().extras != null) {
195                        info.title = sbn.getNotification().extras.getString(
196                                Notification.EXTRA_TITLE);
197                        if (info.title == null || "".equals(info.title)) {
198                            info.title = sbn.getNotification().extras.getString(
199                                    Notification.EXTRA_TEXT);
200                        }
201                    }
202                    if (info.title == null || "".equals(info.title)) {
203                        info.title = sbn.getNotification().tickerText;
204                    }
205                    // still nothing? come on, give us something!
206                    if (info.title == null || "".equals(info.title)) {
207                        info.title = info.pkgname;
208                    }
209                    info.timestamp = sbn.getPostTime();
210                    info.priority = sbn.getNotification().priority;
211                    logd("   [%d] %s: %s", info.timestamp, info.pkg, info.title);
212
213                    info.active = (resultset == active);
214
215                    if (info.user == UserHandle.USER_ALL
216                            || info.user == currentUserId) {
217                        list.add(info);
218                    }
219                }
220            }
221
222            return list;
223        } catch (RemoteException e) {
224            Log.e(TAG, "Cannot load Notifications: ", e);
225        }
226        return null;
227    }
228
229    private Resources getResourcesForUserPackage(String pkg, int userId) {
230        Resources r = null;
231
232        if (pkg != null) {
233            try {
234                if (userId == UserHandle.USER_ALL) {
235                    userId = UserHandle.USER_OWNER;
236                }
237                r = mPm.getResourcesForApplicationAsUser(pkg, userId);
238            } catch (PackageManager.NameNotFoundException ex) {
239                Log.e(TAG, "Icon package not found: " + pkg, ex);
240                return null;
241            }
242        } else {
243            r = mContext.getResources();
244        }
245        return r;
246    }
247
248    private Drawable loadPackageIconDrawable(String pkg, int userId) {
249        Drawable icon = null;
250        try {
251            icon = mPm.getApplicationIcon(pkg);
252        } catch (PackageManager.NameNotFoundException e) {
253            Log.e(TAG, "Cannot get application icon", e);
254        }
255
256        return icon;
257    }
258
259    private CharSequence loadPackageName(String pkg) {
260        try {
261            ApplicationInfo info = mPm.getApplicationInfo(pkg,
262                    PackageManager.GET_UNINSTALLED_PACKAGES);
263            if (info != null) return mPm.getApplicationLabel(info);
264        } catch (PackageManager.NameNotFoundException e) {
265            Log.e(TAG, "Cannot load package name", e);
266        }
267        return pkg;
268    }
269
270    private Drawable loadIconDrawable(String pkg, int userId, int resId) {
271        Resources r = getResourcesForUserPackage(pkg, userId);
272
273        if (resId == 0) {
274            return null;
275        }
276
277        try {
278            return r.getDrawable(resId);
279        } catch (RuntimeException e) {
280            Log.w(TAG, "Icon not found in "
281                    + (pkg != null ? resId : "<system>")
282                    + ": " + Integer.toHexString(resId), e);
283        }
284
285        return null;
286    }
287
288    private class NotificationHistoryAdapter extends ArrayAdapter<HistoricalNotificationInfo> {
289        private final LayoutInflater mInflater;
290
291        public NotificationHistoryAdapter(Context context) {
292            super(context, 0);
293            mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
294        }
295
296        @Override
297        public View getView(int position, View convertView, ViewGroup parent) {
298            final HistoricalNotificationInfo info = getItem(position);
299            logd("getView(%s/%s)", info.pkg, info.title);
300
301            final View row = convertView != null ? convertView : createRow(parent);
302            row.setTag(info);
303
304            // bind icon
305            if (info.icon != null) {
306                ((ImageView) row.findViewById(android.R.id.icon)).setImageDrawable(info.icon);
307            }
308            if (info.pkgicon != null) {
309                ((ImageView) row.findViewById(R.id.pkgicon)).setImageDrawable(info.pkgicon);
310            }
311
312            ((DateTimeView) row.findViewById(R.id.timestamp)).setTime(info.timestamp);
313            ((TextView) row.findViewById(android.R.id.title)).setText(info.title);
314            ((TextView) row.findViewById(R.id.pkgname)).setText(info.pkgname);
315
316            row.findViewById(R.id.extra).setVisibility(View.GONE);
317            row.setAlpha(info.active ? 1.0f : 0.5f);
318
319            // set up click handler
320            row.setOnClickListener(new OnClickListener(){
321                @Override
322                public void onClick(View v) {
323                    v.setPressed(true);
324                    startApplicationDetailsActivity(info.pkg);
325                }});
326
327            return row;
328        }
329
330        private View createRow(ViewGroup parent) {
331            return mInflater.inflate(R.layout.notification_log_row, parent, false);
332        }
333
334    }
335
336    private void startApplicationDetailsActivity(String packageName) {
337        Intent intent = new Intent(android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
338                Uri.fromParts("package", packageName, null));
339        intent.setComponent(intent.resolveActivity(mPm));
340        startActivity(intent);
341    }
342}
343