static DateTimeZone getDateTimeZone(PageContext pc, Tag fromTag) {
        DateTimeZone tz = null;

        Tag t = findAncestorWithClass(fromTag, DateTimeZoneSupport.class);
        if (t != null) {
            // use time zone from parent <timeZone> tag
            DateTimeZoneSupport parent = (DateTimeZoneSupport) t;
            tz = parent.getDateTimeZone();
        } else {
            // get time zone from configuration setting
            Object obj = Config.find(pc, FMT_TIME_ZONE);
            if (obj != null) {
                if (obj instanceof DateTimeZone) {
                    tz = (DateTimeZone) obj;
                } else {
                    try {
                        tz = DateTimeZone.forID((String) obj);
                    } catch (IllegalArgumentException iae) {
                        tz = DateTimeZone.UTC;
                    }
                }
            }
        }

        return tz;
    }
static DateTimeZone getDateTimeZone ( PageContext pc , Tag fromTag ) { DateTimeZone tz = null ; Tag t = findAncestorWithClass ( fromTag , DateTimeZoneSupport . class ) ; if ( t != null ) { DateTimeZoneSupport parent = ( DateTimeZoneSupport ) t ; tz = parent . getDateTimeZone ( ) ; } else { Object obj = Config . find ( pc , FMT_TIME_ZONE ) ; if ( obj != null ) { if ( obj instanceof DateTimeZone ) { tz = ( DateTimeZone ) obj ; } else { try { tz = DateTimeZone . forID ( ( String ) obj ) ; } catch ( IllegalArgumentException iae ) { tz = DateTimeZone . UTC ; } } } } return tz ; }
Determines and returns the time zone to be used by the given action.
<p>
If the given action is nested inside a &lt;dateTimeZone&gt; action,
the time zone is taken from the enclosing &lt;dateTimeZone&gt; action.
<p>
Otherwise, the time zone configuration setting
<tt>org.joda.time.FMT_TIME_ZONE</tt> is used.

@param pc  the page containing the action for which the time zone
needs to be determined
@param fromTag  the action for which the time zone needs to be determined

@return the time zone, or <tt> null </tt> if the given action is not
nested inside a &lt;dateTimeZone&gt; action and no time zone configuration
setting exists