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.content.Context;
20import android.content.res.Resources;
21import android.text.TextUtils;
22import android.text.format.DateFormat;
23import android.util.AttributeSet;
24import android.util.Log;
25import android.util.Slog;
26import android.view.View;
27import android.widget.GridLayout;
28import android.widget.TextClock;
29import android.widget.TextView;
30
31import com.android.internal.widget.LockPatternUtils;
32
33import java.util.Locale;
34
35public class KeyguardStatusView extends GridLayout {
36    private static final boolean DEBUG = KeyguardViewMediator.DEBUG;
37    private static final String TAG = "KeyguardStatusView";
38
39    private LockPatternUtils mLockPatternUtils;
40
41    private TextView mAlarmStatusView;
42    private TextClock mDateView;
43    private TextClock mClockView;
44
45    private KeyguardUpdateMonitorCallback mInfoCallback = new KeyguardUpdateMonitorCallback() {
46
47        @Override
48        public void onTimeChanged() {
49            refresh();
50        }
51
52        @Override
53        void onKeyguardVisibilityChanged(boolean showing) {
54            if (showing) {
55                if (DEBUG) Slog.v(TAG, "refresh statusview showing:" + showing);
56                refresh();
57            }
58        };
59
60        @Override
61        public void onScreenTurnedOn() {
62            setEnableMarquee(true);
63        };
64
65        @Override
66        public void onScreenTurnedOff(int why) {
67            setEnableMarquee(false);
68        };
69    };
70
71    public KeyguardStatusView(Context context) {
72        this(context, null, 0);
73    }
74
75    public KeyguardStatusView(Context context, AttributeSet attrs) {
76        this(context, attrs, 0);
77    }
78
79    public KeyguardStatusView(Context context, AttributeSet attrs, int defStyle) {
80        super(context, attrs, defStyle);
81    }
82
83    private void setEnableMarquee(boolean enabled) {
84        if (DEBUG) Log.v(TAG, (enabled ? "Enable" : "Disable") + " transport text marquee");
85        if (mAlarmStatusView != null) mAlarmStatusView.setSelected(enabled);
86    }
87
88    @Override
89    protected void onFinishInflate() {
90        super.onFinishInflate();
91        mAlarmStatusView = (TextView) findViewById(R.id.alarm_status);
92        mDateView = (TextClock) findViewById(R.id.date_view);
93        mClockView = (TextClock) findViewById(R.id.clock_view);
94        mLockPatternUtils = new LockPatternUtils(getContext());
95        final boolean screenOn = KeyguardUpdateMonitor.getInstance(mContext).isScreenOn();
96        setEnableMarquee(screenOn);
97        refresh();
98    }
99
100    protected void refresh() {
101        Patterns.update(mContext);
102
103        mDateView.setFormat24Hour(Patterns.dateView);
104        mDateView.setFormat12Hour(Patterns.dateView);
105
106        mClockView.setFormat12Hour(Patterns.clockView12);
107        mClockView.setFormat24Hour(Patterns.clockView24);
108
109        refreshAlarmStatus();
110    }
111
112    void refreshAlarmStatus() {
113        // Update Alarm status
114        String nextAlarm = mLockPatternUtils.getNextAlarm();
115        if (!TextUtils.isEmpty(nextAlarm)) {
116            mAlarmStatusView.setText(nextAlarm);
117            mAlarmStatusView.setVisibility(View.VISIBLE);
118        } else {
119            mAlarmStatusView.setVisibility(View.GONE);
120        }
121    }
122
123    @Override
124    protected void onAttachedToWindow() {
125        super.onAttachedToWindow();
126        KeyguardUpdateMonitor.getInstance(mContext).registerCallback(mInfoCallback);
127    }
128
129    @Override
130    protected void onDetachedFromWindow() {
131        super.onDetachedFromWindow();
132        KeyguardUpdateMonitor.getInstance(mContext).removeCallback(mInfoCallback);
133    }
134
135    public int getAppWidgetId() {
136        return LockPatternUtils.ID_DEFAULT_STATUS_WIDGET;
137    }
138
139    // DateFormat.getBestDateTimePattern is extremely expensive, and refresh is called often.
140    // This is an optimization to ensure we only recompute the patterns when the inputs change.
141    private static final class Patterns {
142        static String dateView;
143        static String clockView12;
144        static String clockView24;
145        static String cacheKey;
146
147        static void update(Context context) {
148            final Locale locale = Locale.getDefault();
149            final Resources res = context.getResources();
150            final String dateViewSkel = res.getString(R.string.abbrev_wday_month_day_no_year);
151            final String clockView12Skel = res.getString(R.string.clock_12hr_format);
152            final String clockView24Skel = res.getString(R.string.clock_24hr_format);
153            final String key = locale.toString() + dateViewSkel + clockView12Skel + clockView24Skel;
154            if (key.equals(cacheKey)) return;
155
156            dateView = DateFormat.getBestDateTimePattern(locale, dateViewSkel);
157
158            clockView12 = DateFormat.getBestDateTimePattern(locale, clockView12Skel);
159            // CLDR insists on adding an AM/PM indicator even though it wasn't in the skeleton
160            // format.  The following code removes the AM/PM indicator if we didn't want it.
161            if (!clockView12Skel.contains("a")) {
162                clockView12 = clockView12.replaceAll("a", "").trim();
163            }
164
165            clockView24 = DateFormat.getBestDateTimePattern(locale, clockView24Skel);
166
167            cacheKey = key;
168        }
169    }
170}
171