packages/SystemUI/src/com/android/systemui/statusbar/policy/Clock.java - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2006 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.systemui.statusbar.policy;

 import android.app.ActivityManager;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.res.TypedArray;
 import android.os.Bundle;
 import android.os.UserHandle;
 import android.text.Spannable;
 import android.text.SpannableStringBuilder;
 import android.text.format.DateFormat;
 import android.text.style.CharacterStyle;
 import android.text.style.RelativeSizeSpan;
 import android.util.AttributeSet;
 import android.widget.TextView;

 import com.android.systemui.DemoMode;
 import com.android.systemui.R;

 import java.text.SimpleDateFormat;
 import java.util.Calendar;
 import java.util.Locale;
 import java.util.TimeZone;

 import libcore.icu.LocaleData;

 /**
  * Digital clock for the status bar.
  */
 public class Clock extends TextView implements DemoMode {
     private boolean mAttached;
     private Calendar mCalendar;
     private String mClockFormatString;
     private SimpleDateFormat mClockFormat;
     private Locale mLocale;

     private static final int AM_PM_STYLE_NORMAL  = 0;
     private static final int AM_PM_STYLE_SMALL   = 1;
     private static final int AM_PM_STYLE_GONE    = 2;

     private final int mAmPmStyle;

     public Clock(Context context) {
         this(context, null);
     }

     public Clock(Context context, AttributeSet attrs) {
         this(context, attrs, 0);
     }

     public Clock(Context context, AttributeSet attrs, int defStyle) {
         super(context, attrs, defStyle);
         TypedArray a = context.getTheme().obtainStyledAttributes(
                 attrs,
                 R.styleable.Clock,
                 0, 0);
         try {
             mAmPmStyle = a.getInt(R.styleable.Clock_amPmStyle, AM_PM_STYLE_GONE);
         } finally {
             a.recycle();
         }
     }

     @Override
     protected void onAttachedToWindow() {
         super.onAttachedToWindow();

         if (!mAttached) {
             mAttached = true;
             IntentFilter filter = new IntentFilter();

             filter.addAction(Intent.ACTION_TIME_TICK);
             filter.addAction(Intent.ACTION_TIME_CHANGED);
             filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
             filter.addAction(Intent.ACTION_CONFIGURATION_CHANGED);
             filter.addAction(Intent.ACTION_USER_SWITCHED);

             getContext().registerReceiverAsUser(mIntentReceiver, UserHandle.ALL, filter,
                     null, getHandler());
         }

         // NOTE: It's safe to do these after registering the receiver since the receiver always runs
         // in the main thread, therefore the receiver can't run before this method returns.

         // The time zone may have changed while the receiver wasn't registered, so update the Time
         mCalendar = Calendar.getInstance(TimeZone.getDefault());

         // Make sure we update to the current time
         updateClock();
     }

     @Override
     protected void onDetachedFromWindow() {
         super.onDetachedFromWindow();
         if (mAttached) {
             getContext().unregisterReceiver(mIntentReceiver);
             mAttached = false;
         }
     }

     private final BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
             String action = intent.getAction();
             if (action.equals(Intent.ACTION_TIMEZONE_CHANGED)) {
                 String tz = intent.getStringExtra("time-zone");
                 mCalendar = Calendar.getInstance(TimeZone.getTimeZone(tz));
                 if (mClockFormat != null) {
                     mClockFormat.setTimeZone(mCalendar.getTimeZone());
                 }
             } else if (action.equals(Intent.ACTION_CONFIGURATION_CHANGED)) {
                 final Locale newLocale = getResources().getConfiguration().locale;
                 if (! newLocale.equals(mLocale)) {
                     mLocale = newLocale;
                     mClockFormatString = ""; // force refresh
                 }
             }
             updateClock();
         }
     };

     final void updateClock() {
         if (mDemoMode) return;
         mCalendar.setTimeInMillis(System.currentTimeMillis());
         setText(getSmallTime());
     }

     private final CharSequence getSmallTime() {
         Context context = getContext();
         boolean is24 = DateFormat.is24HourFormat(context, ActivityManager.getCurrentUser());
         LocaleData d = LocaleData.get(context.getResources().getConfiguration().locale);

         final char MAGIC1 = '\uEF00';
         final char MAGIC2 = '\uEF01';

         SimpleDateFormat sdf;
         String format = is24 ? d.timeFormat_Hm : d.timeFormat_hm;
         if (!format.equals(mClockFormatString)) {
             /*
              * Search for an unquoted "a" in the format string, so we can
              * add dummy characters around it to let us find it again after
              * formatting and change its size.
              */
             if (mAmPmStyle != AM_PM_STYLE_NORMAL) {
                 int a = -1;
                 boolean quoted = false;
                 for (int i = 0; i < format.length(); i++) {
                     char c = format.charAt(i);

                     if (c == '\'') {
                         quoted = !quoted;
                     }
                     if (!quoted && c == 'a') {
                         a = i;
                         break;
                     }
                 }

                 if (a >= 0) {
                     // Move a back so any whitespace before AM/PM is also in the alternate size.
                     final int b = a;
                     while (a > 0 && Character.isWhitespace(format.charAt(a-1))) {
                         a--;
                     }
                     format = format.substring(0, a) + MAGIC1 + format.substring(a, b)
                         + "a" + MAGIC2 + format.substring(b + 1);
                 }
             }
             mClockFormat = sdf = new SimpleDateFormat(format);
             mClockFormatString = format;
         } else {
             sdf = mClockFormat;
         }
         String result = sdf.format(mCalendar.getTime());

         if (mAmPmStyle != AM_PM_STYLE_NORMAL) {
             int magic1 = result.indexOf(MAGIC1);
             int magic2 = result.indexOf(MAGIC2);
             if (magic1 >= 0 && magic2 > magic1) {
                 SpannableStringBuilder formatted = new SpannableStringBuilder(result);
                 if (mAmPmStyle == AM_PM_STYLE_GONE) {
                     formatted.delete(magic1, magic2+1);
                 } else {
                     if (mAmPmStyle == AM_PM_STYLE_SMALL) {
                         CharacterStyle style = new RelativeSizeSpan(0.7f);
                         formatted.setSpan(style, magic1, magic2,
                                           Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
                     }
                     formatted.delete(magic2, magic2 + 1);
                     formatted.delete(magic1, magic1 + 1);
                 }
                 return formatted;
             }
         }

         return result;

     }

     private boolean mDemoMode;

     @Override
     public void dispatchDemoCommand(String command, Bundle args) {
         if (!mDemoMode && command.equals(COMMAND_ENTER)) {
             mDemoMode = true;
         } else if (mDemoMode && command.equals(COMMAND_EXIT)) {
             mDemoMode = false;
             updateClock();
         } else if (mDemoMode && command.equals(COMMAND_CLOCK)) {
             String millis = args.getString("millis");
             String hhmm = args.getString("hhmm");
             if (millis != null) {
                 mCalendar.setTimeInMillis(Long.parseLong(millis));
             } else if (hhmm != null && hhmm.length() == 4) {
                 int hh = Integer.parseInt(hhmm.substring(0, 2));
                 int mm = Integer.parseInt(hhmm.substring(2));
                 mCalendar.set(Calendar.HOUR, hh);
                 mCalendar.set(Calendar.MINUTE, mm);
             }
             setText(getSmallTime());
         }
     }
 }
	/*
	* Copyright (C) 2006 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.systemui.statusbar.policy;

	import android.app.ActivityManager;
	import android.content.BroadcastReceiver;
	import android.content.Context;
	import android.content.Intent;
	import android.content.IntentFilter;
	import android.content.res.TypedArray;
	import android.os.Bundle;
	import android.os.UserHandle;
	import android.text.Spannable;
	import android.text.SpannableStringBuilder;
	import android.text.format.DateFormat;
	import android.text.style.CharacterStyle;
	import android.text.style.RelativeSizeSpan;
	import android.util.AttributeSet;
	import android.widget.TextView;

	import com.android.systemui.DemoMode;
	import com.android.systemui.R;

	import java.text.SimpleDateFormat;
	import java.util.Calendar;
	import java.util.Locale;
	import java.util.TimeZone;

	import libcore.icu.LocaleData;

	/**
	* Digital clock for the status bar.
	*/
	public class Clock extends TextView implements DemoMode {
	private boolean mAttached;
	private Calendar mCalendar;
	private String mClockFormatString;
	private SimpleDateFormat mClockFormat;
	private Locale mLocale;

	private static final int AM_PM_STYLE_NORMAL = 0;
	private static final int AM_PM_STYLE_SMALL = 1;
	private static final int AM_PM_STYLE_GONE = 2;

	private final int mAmPmStyle;

	public Clock(Context context) {
	this(context, null);
	}

	public Clock(Context context, AttributeSet attrs) {
	this(context, attrs, 0);
	}

	public Clock(Context context, AttributeSet attrs, int defStyle) {
	super(context, attrs, defStyle);
	TypedArray a = context.getTheme().obtainStyledAttributes(
	attrs,
	R.styleable.Clock,
	0, 0);
	try {
	mAmPmStyle = a.getInt(R.styleable.Clock_amPmStyle, AM_PM_STYLE_GONE);
	} finally {
	a.recycle();
	}
	}

	@Override
	protected void onAttachedToWindow() {
	super.onAttachedToWindow();

	if (!mAttached) {
	mAttached = true;
	IntentFilter filter = new IntentFilter();

	filter.addAction(Intent.ACTION_TIME_TICK);
	filter.addAction(Intent.ACTION_TIME_CHANGED);
	filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
	filter.addAction(Intent.ACTION_CONFIGURATION_CHANGED);
	filter.addAction(Intent.ACTION_USER_SWITCHED);

	getContext().registerReceiverAsUser(mIntentReceiver, UserHandle.ALL, filter,
	null, getHandler());
	}

	// NOTE: It's safe to do these after registering the receiver since the receiver always runs
	// in the main thread, therefore the receiver can't run before this method returns.

	// The time zone may have changed while the receiver wasn't registered, so update the Time
	mCalendar = Calendar.getInstance(TimeZone.getDefault());

	// Make sure we update to the current time
	updateClock();
	}

	@Override
	protected void onDetachedFromWindow() {
	super.onDetachedFromWindow();
	if (mAttached) {
	getContext().unregisterReceiver(mIntentReceiver);
	mAttached = false;
	}
	}

	private final BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
	String action = intent.getAction();
	if (action.equals(Intent.ACTION_TIMEZONE_CHANGED)) {
	String tz = intent.getStringExtra("time-zone");
	mCalendar = Calendar.getInstance(TimeZone.getTimeZone(tz));
	if (mClockFormat != null) {
	mClockFormat.setTimeZone(mCalendar.getTimeZone());
	}
	} else if (action.equals(Intent.ACTION_CONFIGURATION_CHANGED)) {
	final Locale newLocale = getResources().getConfiguration().locale;
	if (! newLocale.equals(mLocale)) {
	mLocale = newLocale;
	mClockFormatString = ""; // force refresh
	}
	}
	updateClock();
	}
	};

	final void updateClock() {
	if (mDemoMode) return;
	mCalendar.setTimeInMillis(System.currentTimeMillis());
	setText(getSmallTime());
	}

	private final CharSequence getSmallTime() {
	Context context = getContext();
	boolean is24 = DateFormat.is24HourFormat(context, ActivityManager.getCurrentUser());
	LocaleData d = LocaleData.get(context.getResources().getConfiguration().locale);

	final char MAGIC1 = '\uEF00';
	final char MAGIC2 = '\uEF01';

	SimpleDateFormat sdf;
	String format = is24 ? d.timeFormat_Hm : d.timeFormat_hm;
	if (!format.equals(mClockFormatString)) {
	/*
	* Search for an unquoted "a" in the format string, so we can
	* add dummy characters around it to let us find it again after
	* formatting and change its size.
	*/
	if (mAmPmStyle != AM_PM_STYLE_NORMAL) {
	int a = -1;
	boolean quoted = false;
	for (int i = 0; i < format.length(); i++) {
	char c = format.charAt(i);

	if (c == '\'') {
	quoted = !quoted;
	}
	if (!quoted && c == 'a') {
	a = i;
	break;
	}
	}

	if (a >= 0) {
	// Move a back so any whitespace before AM/PM is also in the alternate size.
	final int b = a;
	while (a > 0 && Character.isWhitespace(format.charAt(a-1))) {
	a--;
	}
	format = format.substring(0, a) + MAGIC1 + format.substring(a, b)
	+ "a" + MAGIC2 + format.substring(b + 1);
	}
	}
	mClockFormat = sdf = new SimpleDateFormat(format);
	mClockFormatString = format;
	} else {
	sdf = mClockFormat;
	}
	String result = sdf.format(mCalendar.getTime());

	if (mAmPmStyle != AM_PM_STYLE_NORMAL) {
	int magic1 = result.indexOf(MAGIC1);
	int magic2 = result.indexOf(MAGIC2);
	if (magic1 >= 0 && magic2 > magic1) {
	SpannableStringBuilder formatted = new SpannableStringBuilder(result);
	if (mAmPmStyle == AM_PM_STYLE_GONE) {
	formatted.delete(magic1, magic2+1);
	} else {
	if (mAmPmStyle == AM_PM_STYLE_SMALL) {
	CharacterStyle style = new RelativeSizeSpan(0.7f);
	formatted.setSpan(style, magic1, magic2,
	Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
	}
	formatted.delete(magic2, magic2 + 1);
	formatted.delete(magic1, magic1 + 1);
	}
	return formatted;
	}
	}

	return result;

	}

	private boolean mDemoMode;

	@Override
	public void dispatchDemoCommand(String command, Bundle args) {
	if (!mDemoMode && command.equals(COMMAND_ENTER)) {
	mDemoMode = true;
	} else if (mDemoMode && command.equals(COMMAND_EXIT)) {
	mDemoMode = false;
	updateClock();
	} else if (mDemoMode && command.equals(COMMAND_CLOCK)) {
	String millis = args.getString("millis");
	String hhmm = args.getString("hhmm");
	if (millis != null) {
	mCalendar.setTimeInMillis(Long.parseLong(millis));
	} else if (hhmm != null && hhmm.length() == 4) {
	int hh = Integer.parseInt(hhmm.substring(0, 2));
	int mm = Integer.parseInt(hhmm.substring(2));
	mCalendar.set(Calendar.HOUR, hh);
	mCalendar.set(Calendar.MINUTE, mm);
	}
	setText(getSmallTime());
	}
	}
	}