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.keyguard;
18
19import android.app.ActivityManager;
20import android.app.AlarmManager;
21import android.content.ContentResolver;
22import android.content.Context;
23import android.content.res.Configuration;
24import android.content.res.Resources;
25import android.os.UserHandle;
26import android.text.TextUtils;
27import android.text.format.DateFormat;
28import android.util.AttributeSet;
29import android.util.Log;
30import android.util.Slog;
31import android.util.TypedValue;
32import android.view.View;
33import android.widget.GridLayout;
34import android.widget.TextClock;
35import android.widget.TextView;
36
37import com.android.internal.widget.LockPatternUtils;
38
39import java.util.Locale;
40
41public class KeyguardStatusView extends GridLayout {
42    private static final boolean DEBUG = KeyguardConstants.DEBUG;
43    private static final String TAG = "KeyguardStatusView";
44
45    private final LockPatternUtils mLockPatternUtils;
46    private final AlarmManager mAlarmManager;
47
48    private TextView mAlarmStatusView;
49    private TextClock mDateView;
50    private TextClock mClockView;
51    private TextView mOwnerInfo;
52
53    private KeyguardUpdateMonitorCallback mInfoCallback = new KeyguardUpdateMonitorCallback() {
54
55        @Override
56        public void onTimeChanged() {
57            refresh();
58        }
59
60        @Override
61        public void onKeyguardVisibilityChanged(boolean showing) {
62            if (showing) {
63                if (DEBUG) Slog.v(TAG, "refresh statusview showing:" + showing);
64                refresh();
65                updateOwnerInfo();
66            }
67        }
68
69        @Override
70        public void onStartedWakingUp() {
71            setEnableMarquee(true);
72        }
73
74        @Override
75        public void onFinishedGoingToSleep(int why) {
76            setEnableMarquee(false);
77        }
78
79        @Override
80        public void onUserSwitchComplete(int userId) {
81            refresh();
82            updateOwnerInfo();
83        }
84    };
85
86    public KeyguardStatusView(Context context) {
87        this(context, null, 0);
88    }
89
90    public KeyguardStatusView(Context context, AttributeSet attrs) {
91        this(context, attrs, 0);
92    }
93
94    public KeyguardStatusView(Context context, AttributeSet attrs, int defStyle) {
95        super(context, attrs, defStyle);
96        mAlarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
97        mLockPatternUtils = new LockPatternUtils(getContext());
98    }
99
100    private void setEnableMarquee(boolean enabled) {
101        if (DEBUG) Log.v(TAG, (enabled ? "Enable" : "Disable") + " transport text marquee");
102        if (mAlarmStatusView != null) mAlarmStatusView.setSelected(enabled);
103        if (mOwnerInfo != null) mOwnerInfo.setSelected(enabled);
104    }
105
106    @Override
107    protected void onFinishInflate() {
108        super.onFinishInflate();
109        mAlarmStatusView = (TextView) findViewById(R.id.alarm_status);
110        mDateView = (TextClock) findViewById(R.id.date_view);
111        mClockView = (TextClock) findViewById(R.id.clock_view);
112        mDateView.setShowCurrentUserTime(true);
113        mClockView.setShowCurrentUserTime(true);
114        mOwnerInfo = (TextView) findViewById(R.id.owner_info);
115
116        boolean shouldMarquee = KeyguardUpdateMonitor.getInstance(mContext).isDeviceInteractive();
117        setEnableMarquee(shouldMarquee);
118        refresh();
119        updateOwnerInfo();
120
121        // Disable elegant text height because our fancy colon makes the ymin value huge for no
122        // reason.
123        mClockView.setElegantTextHeight(false);
124    }
125
126    @Override
127    protected void onConfigurationChanged(Configuration newConfig) {
128        super.onConfigurationChanged(newConfig);
129        mClockView.setTextSize(TypedValue.COMPLEX_UNIT_PX,
130                getResources().getDimensionPixelSize(R.dimen.widget_big_font_size));
131        mDateView.setTextSize(TypedValue.COMPLEX_UNIT_PX,
132                getResources().getDimensionPixelSize(R.dimen.widget_label_font_size));
133        mOwnerInfo.setTextSize(TypedValue.COMPLEX_UNIT_PX,
134                getResources().getDimensionPixelSize(R.dimen.widget_label_font_size));
135    }
136
137    public void refreshTime() {
138        mDateView.setFormat24Hour(Patterns.dateView);
139        mDateView.setFormat12Hour(Patterns.dateView);
140
141        mClockView.setFormat12Hour(Patterns.clockView12);
142        mClockView.setFormat24Hour(Patterns.clockView24);
143    }
144
145    private void refresh() {
146        AlarmManager.AlarmClockInfo nextAlarm =
147                mAlarmManager.getNextAlarmClock(UserHandle.USER_CURRENT);
148        Patterns.update(mContext, nextAlarm != null);
149
150        refreshTime();
151        refreshAlarmStatus(nextAlarm);
152    }
153
154    void refreshAlarmStatus(AlarmManager.AlarmClockInfo nextAlarm) {
155        if (nextAlarm != null) {
156            String alarm = formatNextAlarm(mContext, nextAlarm);
157            mAlarmStatusView.setText(alarm);
158            mAlarmStatusView.setContentDescription(
159                    getResources().getString(R.string.keyguard_accessibility_next_alarm, alarm));
160            mAlarmStatusView.setVisibility(View.VISIBLE);
161        } else {
162            mAlarmStatusView.setVisibility(View.GONE);
163        }
164    }
165
166    public static String formatNextAlarm(Context context, AlarmManager.AlarmClockInfo info) {
167        if (info == null) {
168            return "";
169        }
170        String skeleton = DateFormat.is24HourFormat(context, ActivityManager.getCurrentUser())
171                ? "EHm"
172                : "Ehma";
173        String pattern = DateFormat.getBestDateTimePattern(Locale.getDefault(), skeleton);
174        return DateFormat.format(pattern, info.getTriggerTime()).toString();
175    }
176
177    private void updateOwnerInfo() {
178        if (mOwnerInfo == null) return;
179        String ownerInfo = getOwnerInfo();
180        if (!TextUtils.isEmpty(ownerInfo)) {
181            mOwnerInfo.setVisibility(View.VISIBLE);
182            mOwnerInfo.setText(ownerInfo);
183        } else {
184            mOwnerInfo.setVisibility(View.GONE);
185        }
186    }
187
188    @Override
189    protected void onAttachedToWindow() {
190        super.onAttachedToWindow();
191        KeyguardUpdateMonitor.getInstance(mContext).registerCallback(mInfoCallback);
192    }
193
194    @Override
195    protected void onDetachedFromWindow() {
196        super.onDetachedFromWindow();
197        KeyguardUpdateMonitor.getInstance(mContext).removeCallback(mInfoCallback);
198    }
199
200    private String getOwnerInfo() {
201        ContentResolver res = getContext().getContentResolver();
202        String info = null;
203        final boolean ownerInfoEnabled = mLockPatternUtils.isOwnerInfoEnabled(
204                KeyguardUpdateMonitor.getCurrentUser());
205        if (ownerInfoEnabled) {
206            info = mLockPatternUtils.getOwnerInfo(KeyguardUpdateMonitor.getCurrentUser());
207        }
208        return info;
209    }
210
211    @Override
212    public boolean hasOverlappingRendering() {
213        return false;
214    }
215
216    // DateFormat.getBestDateTimePattern is extremely expensive, and refresh is called often.
217    // This is an optimization to ensure we only recompute the patterns when the inputs change.
218    private static final class Patterns {
219        static String dateView;
220        static String clockView12;
221        static String clockView24;
222        static String cacheKey;
223
224        static void update(Context context, boolean hasAlarm) {
225            final Locale locale = Locale.getDefault();
226            final Resources res = context.getResources();
227            final String dateViewSkel = res.getString(hasAlarm
228                    ? R.string.abbrev_wday_month_day_no_year_alarm
229                    : R.string.abbrev_wday_month_day_no_year);
230            final String clockView12Skel = res.getString(R.string.clock_12hr_format);
231            final String clockView24Skel = res.getString(R.string.clock_24hr_format);
232            final String key = locale.toString() + dateViewSkel + clockView12Skel + clockView24Skel;
233            if (key.equals(cacheKey)) return;
234
235            dateView = DateFormat.getBestDateTimePattern(locale, dateViewSkel);
236
237            clockView12 = DateFormat.getBestDateTimePattern(locale, clockView12Skel);
238            // CLDR insists on adding an AM/PM indicator even though it wasn't in the skeleton
239            // format.  The following code removes the AM/PM indicator if we didn't want it.
240            if (!clockView12Skel.contains("a")) {
241                clockView12 = clockView12.replaceAll("a", "").trim();
242            }
243
244            clockView24 = DateFormat.getBestDateTimePattern(locale, clockView24Skel);
245
246            // Use fancy colon.
247            clockView24 = clockView24.replace(':', '\uee01');
248            clockView12 = clockView12.replace(':', '\uee01');
249
250            cacheKey = key;
251        }
252    }
253}
254