Ok, attachments don't work. Code follows inline.
++++++++++++++++++
package tapestry.components;
import org.apache.tapestry.form.RadioGroup;
import org.apache.tapestry.form.AbstractFormComponent;
import org.apache.tapestry.IMarkupWriter;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.Tapestry;
import org.apache.tapestry.annotations.Parameter;
import org.apache.tapestry.annotations.ComponentClass;
import org.apache.hivemind.ApplicationRuntimeException;
/**
* TODO: Doc this.
*
* @author Ben Sommerville
*/
@ComponentClass(allowBody = false, reservedParameters = "checked,type,name")
public abstract class FormRadio extends AbstractFormComponent {
@Parameter(name="id", defaultValue="id")
public abstract String getIdParameter();
@Parameter
public abstract String getDisplayName();
@Parameter
public abstract boolean isDisabled();
@Parameter
public abstract Object getValue();
/**
* Renders the form element, or responds when the form containing the
element
* is submitted (by checking [EMAIL PROTECTED]
org.apache.tapestry.form.Form#isRewinding()}.
*
*
**/
protected void renderFormComponent(IMarkupWriter writer, IRequestCycle
cycle)
{
RadioGroup group = RadioGroup.get(cycle);
if (group == null)
throw new ApplicationRuntimeException(
Tapestry.getMessage("Radio.must-be-contained-by-group"),
this,
null,
null);
// The group determines rewinding from the form.
//
// boolean rewinding = group.isRewinding();
int option = group.getNextOptionId();
//
// if (rewinding)
// {
// // If not disabled and this is the selected button within the
radio group,
// // then update set the selection from the group to the value
for this
// // radio button. This will update the selected parameter of
the RadioGroup.
//
// if (!isDisabled() && !group.isDisabled() &&
group.isSelected(option))
// group.updateSelection(getValue());
// return;
// }
//
writer.beginEmpty("input");
writer.attribute("type", "radio");
writer.attribute("name", group.getName());
renderIdAttribute(writer, cycle);
// As the group if the value for this Radio matches the selection
// for the group as a whole; if so this is the default radio and is
checked.
if (group.isSelection(getValue()))
writer.attribute("checked", "checked");
if (isDisabled() || group.isDisabled())
writer.attribute("disabled", "disabled");
// The value for the Radio matches the option number (provided by
the RadioGroup).
// When the form is submitted, the RadioGroup will know which option
was,
// in fact, selected by the user.
writer.attribute("value", option);
renderInformalParameters(writer, cycle);
}
protected void rewindFormComponent(IMarkupWriter writer, IRequestCycle
cycle) {
RadioGroup group = RadioGroup.get(cycle);
if (group == null)
throw new ApplicationRuntimeException(
Tapestry.getMessage("Radio.must-be-contained-by-group"),
this,
null,
null);
// The group determines rewinding from the form.
int option = group.getNextOptionId();
// If not disabled and this is the selected button within the radio
group,
// then update set the selection from the group to the value for
this
// radio button. This will update the selected parameter of the
RadioGroup.
if (!isDisabled() && !group.isDisabled() &&
group.isSelected(option))
group.updateSelection(getValue());
}
}
-----Original Message-----
From: Ben Sommerville [mailto:[EMAIL PROTECTED]
Sent: Thursday, 26 October 2006 9:33 PM
To: 'Tapestry users'
Subject: RE: Dynamic Radiogroup
I ran into this problem too. FieldLabel does not work with Radio because it
is not an IFormComponent.
The order of FieldLabel & the component it refers to doesn't matter. Except
that if you put the FieldLabel after the component you have to set
prerender=false.
I worked around this by creating a radio component that is a form component.
The
attached file has the class. Now the disclaimer- this is code from 6 or 7
months ago on a project that didn't finish & was developerd early in my
tapestry learning cycle - treat with appropriate caution :)
cheers,
Ben
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