package er.extensions.components._private;
import java.text.Format;
import org.apache.log4j.Logger;
import com.webobjects.appserver.WOAssociation;
import com.webobjects.appserver.WOComponent;
import com.webobjects.appserver.WOContext;
import com.webobjects.appserver.WODynamicElement;
import com.webobjects.appserver.WOElement;
import com.webobjects.appserver.WOResponse;
import com.webobjects.appserver._private.WODynamicElementCreationException;
import com.webobjects.foundation.NSDictionary;
import com.webobjects.foundation.NSKeyValueCoding;
import com.webobjects.foundation.NSTimeZone;
import com.webobjects.foundation.NSTimestampFormatter;
import er.extensions.appserver.ERXSession;
import er.extensions.formatters.ERXNumberFormatter;
import er.extensions.formatters.ERXTimestampFormatter;
/**
* Reimplementation of WOString that can resolve localized format strings. This
* is very useful as most of the components in DirectToWeb use a "format"-String
* binding - so to use localized patterns, you'd need to re-implement all these
* components.
*
* @author ak
*/
public class ERXWOString extends WODynamicElement {
public static final Logger log = Logger.getLogger(ERXWOString.class);
protected WOAssociation _dateFormat;
protected WOAssociation _numberFormat;
protected WOAssociation _formatter;
protected WOAssociation _value;
protected WOAssociation _escapeHTML;
protected WOAssociation _valueWhenEmpty;
boolean _shouldFormat;
public ERXWOString(String s, NSDictionary nsdictionary, WOElement woelement) {
super(null, null, null);
_value = (WOAssociation) nsdictionary.objectForKey("value");
if (_value == null) { throw new WODynamicElementCreationException("<" + getClass().getName()
+ "> ( no 'value' attribute specified."); }
_valueWhenEmpty = (WOAssociation) nsdictionary.objectForKey("valueWhenEmpty");
_escapeHTML = (WOAssociation) nsdictionary.objectForKey("escapeHTML");
_dateFormat = (WOAssociation) nsdictionary.objectForKey("dateformat");
_numberFormat = (WOAssociation) nsdictionary.objectForKey("numberformat");
_formatter = (WOAssociation) nsdictionary.objectForKey("formatter");
if (_dateFormat != null || _numberFormat != null || _formatter != null)
_shouldFormat = true;
else
_shouldFormat = false;
if ((_dateFormat != null && _numberFormat != null) || (_formatter != null && _dateFormat != null)
|| (_formatter != null && _numberFormat != null)) { throw new WODynamicElementCreationException("<" + getClass().getName()
+ "> ( cannot have 'dateFormat' and 'numberFormat' or 'formatter' attributes at the same time."); }
}
@Override
public void appendToResponse(WOResponse woresponse, WOContext wocontext) {
WOComponent component = wocontext.component();
Object valueInComponent = null;
if (_value != null) {
valueInComponent = _value.valueInComponent(component);
if (_shouldFormat) {
Format format = null;
boolean hasFormatter = false;
if (_formatter != null) {
format = (Format) _formatter.valueInComponent(component);
}
if (format == null) {
if (_dateFormat != null) {
String formatString = (String) _dateFormat.valueInComponent(component);
if (formatString == null) {
format = ERXTimestampFormatter.defaultDateFormatterForObject(formatString);
} else {
format = ERXTimestampFormatter.dateFormatterForPattern(formatString);
}
} else if (_numberFormat != null) {
String formatString = (String) _numberFormat.valueInComponent(component);
if (formatString == null) {
format = ERXNumberFormatter.defaultNumberFormatterForObject(valueInComponent);
} else {
format = ERXNumberFormatter.numberFormatterForPattern(formatString);
}
}
} else {
hasFormatter = true;
}
if(valueInComponent == NSKeyValueCoding.NullValue) {
valueInComponent = null;
}
if (format != null) {
if (valueInComponent == null) {
// do nothing;
} else {
if(ERXSession.autoAdjustTimeZone() &&
!hasFormatter &&
format instanceof NSTimestampFormatter &&
wocontext.hasSession() &&
ERXSession.class.isAssignableFrom(wocontext.session().getClass())
) {
synchronized(format) {
ERXSession session = (ERXSession)wocontext.session();
NSTimeZone zone = NSTimeZone._nstimeZoneWithTimeZone(session.timeZone());
NSTimestampFormatter tsFormat = (NSTimestampFormatter)format;
NSTimeZone parseZone = tsFormat.defaultParseTimeZone();
NSTimeZone formatZone = tsFormat.defaultFormatTimeZone();
tsFormat.setDefaultFormatTimeZone(zone);
tsFormat.setDefaultParseTimeZone(zone);
try {
valueInComponent = format.format(valueInComponent);
} catch (IllegalArgumentException ex) {
log.info("Exception while formatting", ex);
valueInComponent = null;
} finally {
tsFormat.setDefaultFormatTimeZone(formatZone);
tsFormat.setDefaultParseTimeZone(parseZone);
}
}
} else {
try {
valueInComponent = format.format(valueInComponent);
} catch (IllegalArgumentException ex) {
log.info("Exception while formatting", ex);
valueInComponent = null;
}
}
}
} else {
if (valueInComponent != null) {
log.debug("no formatter found!" + valueInComponent);
}
}
}
} else {
log.warn("value binding is null !");
}
String stringValue = null;
if (valueInComponent != null) stringValue = valueInComponent.toString();
if ((stringValue == null || stringValue.length() == 0) && _valueWhenEmpty != null) {
stringValue = (String) _valueWhenEmpty.valueInComponent(component);
woresponse.appendContentString(stringValue);
} else if (stringValue != null) {
boolean escapeHTML = true;
if (_escapeHTML != null) escapeHTML = _escapeHTML.booleanValueInComponent(component);
if (escapeHTML)
woresponse.appendContentHTMLString(stringValue);
else
woresponse.appendContentString(stringValue);
}
}
}