org.apache.tapestry5.internal
Class DefaultValidationDecorator

java.lang.Object
  org.apache.tapestry5.BaseValidationDecorator
      org.apache.tapestry5.internal.DefaultValidationDecorator

All Implemented Interfaces:

ValidationDecorator

public final class DefaultValidationDecorator
extends BaseValidationDecorator

Default implementation that writes an attribute into fields or labels that are in error.

Constructor Summary

DefaultValidationDecorator(Environment environment, Asset spacerAsset, MarkupWriter markupWriter)

Method Summary

void	afterField(Field field) Writes an icon for field after the field.
void	insideField(Field field) Invoked at a point where the decorator may write additional attributes into the field.
void	insideLabel(Field field, Element element) Invoked after the label has rendered its tag, but before it has rendered content inside the tag, to allow the decorator to write additional attributes.

Methods inherited from class org.apache.tapestry5.BaseValidationDecorator

afterLabel, beforeField, beforeLabel

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DefaultValidationDecorator

public DefaultValidationDecorator(Environment environment,
                                  Asset spacerAsset,
                                  MarkupWriter markupWriter)

Parameters:

environment - used to locate objects and services during the render

spacerAsset - asset for a one-pixel spacer image used as a placeholder for the error marker icon

markupWriter -

Method Detail

insideField

public void insideField(Field field)

Description copied from interface: ValidationDecorator

Invoked at a point where the decorator may write additional attributes into the field. Generally speaking, you will want to render informal parameters before invoking this method.

Specified by:

insideField in interface ValidationDecorator

Overrides:

insideField in class BaseValidationDecorator

insideLabel

public void insideLabel(Field field,
                        Element element)

Description copied from interface: ValidationDecorator

Invoked after the label has rendered its tag, but before it has rendered content inside the tag, to allow the decorator to write additional attributes.

Specified by:

insideLabel in interface ValidationDecorator

Overrides:

insideLabel in class BaseValidationDecorator

Parameters:

field - the field corresponding to the label

element - the element for this label

afterField

public void afterField(Field field)

Writes an icon for field after the field. The icon has the same id as the field, with ":icon" appended. This is expected by the default client-side JavaScript. The icon's src is a blank spacer image (this is to allow the image displayed to be overridden via CSS). The icon's CSS class is "t-error-icon", with "t-invisible" added if the field is not in error when rendered. If client validation is not enabled for the form containing the field and the field is not in error, then the error icon itself is not rendered.

Specified by:

afterField in interface ValidationDecorator

Overrides:

afterField in class BaseValidationDecorator

Parameters:

field - which just completed rendering itself