Add methods for Time_Delegate [DO NOT MERGE]

Bug: http://b.android.com/65359
Change-Id: I7c2d09286d6bcd9899444aaa5a4a5a342e39d923
(cherry-picked from ddb7f3273c)

tools/layoutlib/bridge/src/android/text/format/Time_Delegate.java

@@ -17,6 +17,7 @@
 package android.text.format;
 
 import java.util.Calendar;
+import java.util.TimeZone;
 import java.util.UnknownFormatConversionException;
 import java.util.regex.Pattern;
 
@@ -35,6 +36,28 @@ public class Time_Delegate {
     // Regex to match odd number of '%'.
     private static final Pattern p = Pattern.compile("(?<!%)(%%)*%(?!%)");
 
+    // Format used by toString()
+    private static final String FORMAT = "%1$tY%1$tm%1$tdT%1$tH%1$tM%1$tS<%1$tZ>";
+
+    @LayoutlibDelegate
+    /*package*/ static long normalize(Time thisTime, boolean ignoreDst) {
+        long millis = toMillis(thisTime, ignoreDst);
+        set(thisTime, millis);
+        return millis;
+    }
+
+    @LayoutlibDelegate
+    /*package*/ static void switchTimezone(Time thisTime, String timezone) {
+        Calendar c = timeToCalendar(thisTime);
+        c.setTimeZone(TimeZone.getTimeZone(timezone));
+        calendarToTime(c, thisTime);
+    }
+
+    @LayoutlibDelegate
+    /*package*/ static int nativeCompare(Time a, Time b) {
+      return timeToCalendar(a).compareTo(timeToCalendar(b));
+    }
+
     @LayoutlibDelegate
     /*package*/ static String format1(Time thisTime, String format) {
 
@@ -46,16 +69,92 @@ public class Time_Delegate {
             // of $.
             return String.format(
                     p.matcher(format).replaceAll("$0\\1\\$t"),
-                    timeToCalendar(thisTime, Calendar.getInstance()));
+                    timeToCalendar(thisTime));
         } catch (UnknownFormatConversionException e) {
             Bridge.getLog().fidelityWarning(LayoutLog.TAG_STRFTIME, "Unrecognized format", e, format);
             return format;
         }
     }
 
-    private static Calendar timeToCalendar(Time time, Calendar calendar) {
+    /**
+     * Return the current time in YYYYMMDDTHHMMSS<tz> format
+     */
+    @LayoutlibDelegate
+    /*package*/ static String toString(Time thisTime) {
+        Calendar c = timeToCalendar(thisTime);
+        return String.format(FORMAT, c);
+    }
+
+    @LayoutlibDelegate
+    /*package*/ static boolean nativeParse(Time thisTime, String s) {
+        Bridge.getLog().error(LayoutLog.TAG_UNSUPPORTED,
+                "android.text.format.Time.parse() not supported.", null);
+        return false;
+    }
+
+    @LayoutlibDelegate
+    /*package*/ static boolean nativeParse3339(Time thisTime, String s) {
+        Bridge.getLog().error(LayoutLog.TAG_UNSUPPORTED,
+                "android.text.format.Time.parse3339() not supported.", null);
+        return false;
+    }
+
+    @LayoutlibDelegate
+    /*package*/ static void setToNow(Time thisTime) {
+        calendarToTime(getCalendarInstance(thisTime), thisTime);
+    }
+
+    @LayoutlibDelegate
+    /*package*/ static long toMillis(Time thisTime, boolean ignoreDst) {
+        // TODO: Respect ignoreDst.
+        return timeToCalendar(thisTime).getTimeInMillis();
+    }
+
+    @LayoutlibDelegate
+    /*package*/ static void set(Time thisTime, long millis) {
+        Calendar c = getCalendarInstance(thisTime);
+        c.setTimeInMillis(millis);
+        calendarToTime(c,thisTime);
+    }
+
+    @LayoutlibDelegate
+    /*package*/ static String format2445(Time thisTime) {
+        Bridge.getLog().error(LayoutLog.TAG_UNSUPPORTED,
+                "android.text.format.Time.format2445() not supported.", null);
+        return "";
+    }
+
+    // ---- private helper methods ----
+
+    private static Calendar timeToCalendar(Time time) {
+        Calendar calendar = getCalendarInstance(time);
         calendar.set(time.year, time.month, time.monthDay, time.hour, time.minute, time.second);
         return calendar;
     }
 
+    private static void calendarToTime(Calendar c, Time time) {
+        time.timezone = c.getTimeZone().getID();
+        time.set(c.get(Calendar.SECOND), c.get(Calendar.MINUTE), c.get(Calendar.HOUR_OF_DAY),
+                c.get(Calendar.DATE), c.get(Calendar.MONTH), c.get(Calendar.YEAR));
+        time.weekDay = c.get(Calendar.DAY_OF_WEEK);
+        time.yearDay = c.get(Calendar.DAY_OF_YEAR);
+        time.isDst = c.getTimeZone().inDaylightTime(c.getTime()) ? 1 : 0;
+        // gmtoff is in seconds and TimeZone.getOffset() returns milliseconds.
+        time.gmtoff = c.getTimeZone().getOffset(c.getTimeInMillis()) / DateUtils.SECOND_IN_MILLIS;
+    }
+
+    /**
+     * Return a calendar instance with the correct timezone.
+     *
+     * @param time Time to obtain the timezone from.
+     */
+    private static Calendar getCalendarInstance(Time time) {
+        // TODO: Check platform code to make sure the behavior is same for null/invalid timezone.
+        if (time == null || time.timezone == null) {
+            // Default to local timezone.
+            return Calendar.getInstance();
+        }
+        // If timezone is invalid, use GMT.
+        return Calendar.getInstance(TimeZone.getTimeZone(time.timezone));
+    }
 }

tools/layoutlib/create/src/com/android/tools/layoutlib/create/CreateInfo.java

@@ -129,7 +129,6 @@ public final class CreateInfo implements ICreateInfo {
         "android.os.HandlerThread#run",
         "android.os.Build#getString",
         "android.text.format.DateFormat#is24HourFormat",
-        "android.text.format.Time#format1",
         "android.view.Choreographer#getRefreshRate",
         "android.view.Display#updateDisplayInfoLocked",
         "android.view.LayoutInflater#rInflate",
@@ -186,6 +185,7 @@ public final class CreateInfo implements ICreateInfo {
         "android.graphics.Xfermode",
         "android.os.SystemClock",
         "android.text.AndroidBidi",
+        "android.text.format.Time",
         "android.util.FloatMath",
         "android.view.Display",
         "libcore.icu.ICU",