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org.apache.cocoon.woody.formmodel
Class BooleanField

java.lang.Object
  org.apache.cocoon.woody.formmodel.AbstractWidget
      org.apache.cocoon.woody.formmodel.BooleanField

All Implemented Interfaces:

Widget

public class BooleanField
extends AbstractWidget

A widget to select a boolean value. Usually rendered as a checkbox.

You may wonder why we don't use a Field widget with an associated Boolean Datatype instead. The reason is that many of the features of the Field widget are overkill for a Boolean: validation is unnecessary (if the field is not true it is false), the selectionlist associated with a Datatype also has no purpose here (there would always be only 2 choices: true or false), and the manner in which the request parameter of this widget is interpreted is different (missing or empty request parameter means 'false', rather than null value).

Version:

$Id: BooleanField.html 1304258 2012-03-23 10:09:27Z ilgrosso $

Constructor Summary

BooleanField(BooleanFieldDefinition definition)

Method Summary

void	broadcastEvent(WidgetEvent event) Broadcast an event previously queued by this widget to its event listeners.
void	generateLabel(ContentHandler contentHandler) Generates SAX events for the label of this widget.
void	generateSaxFragment(ContentHandler contentHandler, Locale locale) Generates an XML representation of this widget.
String	getId() Gets the id of this widget.
Object	getValue() Returns the value of the widget.
void	readFromRequest(FormContext formContext) Lets this widget read its data from a request.
void	setValue(Object object) Sets value of the field.
boolean	validate(FormContext formContext) Always return true (an action has no validation)

Methods inherited from class org.apache.cocoon.woody.formmodel.AbstractWidget

addValidator, generateItemSaxFragment, generateSaxFragment, getForm, getFullyQualifiedId, getLocation, getNamespace, getParent, getWidget, isRequired, removeValidator, setDefinition, setLocation, setParent

Methods inherited from class java.lang.Object

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

Constructor Detail

BooleanField

public BooleanField(BooleanFieldDefinition definition)

Method Detail

getId

public String getId()

Description copied from class: AbstractWidget

Gets the id of this widget.

Specified by:

getId in interface Widget

Overrides:

getId in class AbstractWidget

readFromRequest

public void readFromRequest(FormContext formContext)

Description copied from interface: Widget

Lets this widget read its data from a request. At this point the Widget may try to convert the request parameter to its native datatype (if it is not a string), but it should not yet generate any validation errors.

validate

public boolean validate(FormContext formContext)

Always return true (an action has no validation)

Specified by:

validate in interface Widget

Overrides:

validate in class AbstractWidget

generateSaxFragment

public void generateSaxFragment(ContentHandler contentHandler,
                                Locale locale)
                         throws SAXException

Description copied from interface: Widget

Generates an XML representation of this widget. The startDocument and endDocument SAX events will not be called. It is assumed that the prefix for the Woody namespace mentioned in Constants.WI_PREFIX is already declared (by the caller or otherwise).

Throws:

SAXException

generateLabel

public void generateLabel(ContentHandler contentHandler)
                   throws SAXException

Description copied from interface: Widget

Generates SAX events for the label of this widget. The label will not be wrapped inside another element.

Specified by:

generateLabel in interface Widget

Overrides:

generateLabel in class AbstractWidget

Throws:

SAXException

getValue

public Object getValue()

Description copied from interface: Widget

Returns the value of the widget. For some widgets (notably ContainerWidgets) this may not make sense, those should then simply return null here.

Specified by:

getValue in interface Widget

Overrides:

getValue in class AbstractWidget

setValue

public void setValue(Object object)

Sets value of the field. If value is null, it is considered to be false (see class comment).

Specified by:

setValue in interface Widget

Overrides:

setValue in class AbstractWidget

broadcastEvent

public void broadcastEvent(WidgetEvent event)

Description copied from interface: Widget

Broadcast an event previously queued by this widget to its event listeners.

Specified by:

broadcastEvent in interface Widget

Overrides:

broadcastEvent in class AbstractWidget