KeyguardStatusView.java revision d09def75110ea9833e3985ce33a878a471a8a0dc 
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.AlarmManager;
20import android.content.ContentResolver;
21import android.content.Context;
22import android.content.res.Configuration;
23import android.content.res.Resources;
24import android.provider.AlarmClock;
25import android.text.TextUtils;
26import android.text.format.DateFormat;
27import android.util.AttributeSet;
28import android.util.Log;
29import android.util.Slog;
30import android.util.TypedValue;
31import android.view.View;
32import android.widget.GridLayout;
33import android.widget.TextClock;
34import android.widget.TextView;
35
36import com.android.internal.widget.LockPatternUtils;
37
38import java.util.Locale;
39
40public class KeyguardStatusView extends GridLayout {
41    private static final boolean DEBUG = KeyguardConstants.DEBUG;
42    private static final String TAG = "KeyguardStatusView";
43
44    private LockPatternUtils mLockPatternUtils;
45
46    private TextView mAlarmStatusView;
47    private TextClock mDateView;
48    private TextClock mClockView;
49    private TextView mOwnerInfo;
50
51    private KeyguardUpdateMonitorCallback mInfoCallback = new KeyguardUpdateMonitorCallback() {
52
53        @Override
54        public void onTimeChanged() {
55            refresh();
56        }
57
58        @Override
59        public void onKeyguardVisibilityChanged(boolean showing) {
60            if (showing) {
61                if (DEBUG) Slog.v(TAG, "refresh statusview showing:" + showing);
62                refresh();
63                updateOwnerInfo();
64            }
65        }
66
67        @Override
68        public void onScreenTurnedOn() {
69            setEnableMarquee(true);
70        }
71
72        @Override
73        public void onScreenTurnedOff(int why) {
74            setEnableMarquee(false);
75        }
76
77        @Override
78        public void onUserSwitchComplete(int userId) {
79            refresh();
80            updateOwnerInfo();
81        }
82    };
83
84    public KeyguardStatusView(Context context) {
85        this(context, null, 0);
86    }
87
88    public KeyguardStatusView(Context context, AttributeSet attrs) {
89        this(context, attrs, 0);
90    }
91
92    public KeyguardStatusView(Context context, AttributeSet attrs, int defStyle) {
93        super(context, attrs, defStyle);
94    }
95
96    private void setEnableMarquee(boolean enabled) {
97        if (DEBUG) Log.v(TAG, (enabled ? "Enable" : "Disable") + " transport text marquee");
98        if (mAlarmStatusView != null) mAlarmStatusView.setSelected(enabled);
99        if (mOwnerInfo != null) mOwnerInfo.setSelected(enabled);
100    }
101
102    @Override
103    protected void onFinishInflate() {
104        super.onFinishInflate();
105        mAlarmStatusView = (TextView) findViewById(R.id.alarm_status);
106        mDateView = (TextClock) findViewById(R.id.date_view);
107        mClockView = (TextClock) findViewById(R.id.clock_view);
108        mOwnerInfo = (TextView) findViewById(R.id.owner_info);
109        mLockPatternUtils = new LockPatternUtils(getContext());
110        final boolean screenOn = KeyguardUpdateMonitor.getInstance(mContext).isScreenOn();
111        setEnableMarquee(screenOn);
112        refresh();
113        updateOwnerInfo();
114
115        // Disable elegant text height because our fancy colon makes the ymin value huge for no
116        // reason.
117        mClockView.setElegantTextHeight(false);
118    }
119
120    @Override
121    protected void onConfigurationChanged(Configuration newConfig) {
122        super.onConfigurationChanged(newConfig);
123        mClockView.setTextSize(TypedValue.COMPLEX_UNIT_PX,
124                getResources().getDimensionPixelSize(R.dimen.widget_big_font_size));
125        mDateView.setTextSize(TypedValue.COMPLEX_UNIT_PX,
126                getResources().getDimensionPixelSize(R.dimen.widget_label_font_size));
127        mOwnerInfo.setTextSize(TypedValue.COMPLEX_UNIT_PX,
128                getResources().getDimensionPixelSize(R.dimen.widget_label_font_size));
129    }
130
131    public void refreshTime() {
132        mDateView.setFormat24Hour(Patterns.dateView);
133        mDateView.setFormat12Hour(Patterns.dateView);
134
135        mClockView.setFormat12Hour(Patterns.clockView12);
136        mClockView.setFormat24Hour(Patterns.clockView24);
137    }
138
139    private void refresh() {
140        AlarmManager.AlarmClockInfo nextAlarm = mLockPatternUtils.getNextAlarm();
141        Patterns.update(mContext, nextAlarm != null);
142
143        refreshTime();
144        refreshAlarmStatus(nextAlarm);
145    }
146
147    void refreshAlarmStatus(AlarmManager.AlarmClockInfo nextAlarm) {
148        if (nextAlarm != null) {
149            String alarm = formatNextAlarm(mContext, nextAlarm);
150            mAlarmStatusView.setText(alarm);
151            mAlarmStatusView.setContentDescription(
152                    getResources().getString(R.string.keyguard_accessibility_next_alarm, alarm));
153            mAlarmStatusView.setVisibility(View.VISIBLE);
154        } else {
155            mAlarmStatusView.setVisibility(View.GONE);
156        }
157    }
158
159    public static String formatNextAlarm(Context context, AlarmManager.AlarmClockInfo info) {
160        if (info == null) {
161            return "";
162        }
163        String skeleton = DateFormat.is24HourFormat(context) ? "EHm" : "Ehma";
164        String pattern = DateFormat.getBestDateTimePattern(Locale.getDefault(), skeleton);
165        return DateFormat.format(pattern, info.getTriggerTime()).toString();
166    }
167
168    private void updateOwnerInfo() {
169        if (mOwnerInfo == null) return;
170        String ownerInfo = getOwnerInfo();
171        if (!TextUtils.isEmpty(ownerInfo)) {
172            mOwnerInfo.setVisibility(View.VISIBLE);
173            mOwnerInfo.setText(ownerInfo);
174        } else {
175            mOwnerInfo.setVisibility(View.GONE);
176        }
177    }
178
179    @Override
180    protected void onAttachedToWindow() {
181        super.onAttachedToWindow();
182        KeyguardUpdateMonitor.getInstance(mContext).registerCallback(mInfoCallback);
183    }
184
185    @Override
186    protected void onDetachedFromWindow() {
187        super.onDetachedFromWindow();
188        KeyguardUpdateMonitor.getInstance(mContext).removeCallback(mInfoCallback);
189    }
190
191    public int getAppWidgetId() {
192        return LockPatternUtils.ID_DEFAULT_STATUS_WIDGET;
193    }
194
195    private String getOwnerInfo() {
196        ContentResolver res = getContext().getContentResolver();
197        String info = null;
198        final boolean ownerInfoEnabled = mLockPatternUtils.isOwnerInfoEnabled();
199        if (ownerInfoEnabled) {
200            info = mLockPatternUtils.getOwnerInfo(mLockPatternUtils.getCurrentUser());
201        }
202        return info;
203    }
204
205    @Override
206    public boolean hasOverlappingRendering() {
207        return false;
208    }
209
210    // DateFormat.getBestDateTimePattern is extremely expensive, and refresh is called often.
211    // This is an optimization to ensure we only recompute the patterns when the inputs change.
212    private static final class Patterns {
213        static String dateView;
214        static String clockView12;
215        static String clockView24;
216        static String cacheKey;
217
218        static void update(Context context, boolean hasAlarm) {
219            final Locale locale = Locale.getDefault();
220            final Resources res = context.getResources();
221            final String dateViewSkel = res.getString(hasAlarm
222                    ? R.string.abbrev_wday_month_day_no_year_alarm
223                    : R.string.abbrev_wday_month_day_no_year);
224            final String clockView12Skel = res.getString(R.string.clock_12hr_format);
225            final String clockView24Skel = res.getString(R.string.clock_24hr_format);
226            final String key = locale.toString() + dateViewSkel + clockView12Skel + clockView24Skel;
227            if (key.equals(cacheKey)) return;
228
229            dateView = DateFormat.getBestDateTimePattern(locale, dateViewSkel);
230
231            clockView12 = DateFormat.getBestDateTimePattern(locale, clockView12Skel);
232            // CLDR insists on adding an AM/PM indicator even though it wasn't in the skeleton
233            // format.  The following code removes the AM/PM indicator if we didn't want it.
234            if (!clockView12Skel.contains("a")) {
235                clockView12 = clockView12.replaceAll("a", "").trim();
236            }
237
238            clockView24 = DateFormat.getBestDateTimePattern(locale, clockView24Skel);
239
240            // Use fancy colon.
241            clockView24 = clockView24.replace(':', '\uee01');
242            clockView12 = clockView12.replace(':', '\uee01');
243
244            cacheKey = key;
245        }
246    }
247}
248