i have a similar use case. below is the code for a component i wrote. it is a
markup container, so you can add components to it, which can be referenced from
the html:
public abstract class CompositeComponent extends FormComponent{
public CompositeComponent(String id) {
this(id, null);
}
public CompositeComponent(String id, IModel model) {
// XXX: can make it in omModelChanged, but then i have to do
some ugly checks
super(id);
setModel(new PartialModel(model));
}
abstract protected String[] getCompositeInput(List<String[]> list);
abstract protected Object getPartialObject(Component component, Object
modelObject);
/* (non-Javadoc)
* @see wicket.markup.html.form.FormComponent#getInput()
*/
@Override
public String[] getInputAsArray() {
// go over all children, and create a list.
final List<String[]> list = new ArrayList<String[]>();
visitChildren(FormComponent.class, new Component.IVisitor(){
public Object component(Component component) {
list.add(((FormComponent)component).getInputAsArray());
return Component.IVisitor.CONTINUE_TRAVERSAL;
}
});
return getCompositeInput(list);
}
private class PartialModel implements ICompoundModel {
private IModel selfModel;
public PartialModel(IModel model) {
selfModel = model;
}
public IModel getNestedModel() {
return null;
}
public Object getObject(Component component) {
resolveSelfModel();
if (component == null) {
return
selfModel.getObject(CompositeComponent.this);
}
return getPartialObject(component,
selfModel.getObject(CompositeComponent.this));
}
public void setObject(Component component, Object object) {
if (component == null) {
resolveSelfModel();
selfModel.setObject(CompositeComponent.this,
object);
}
}
private void resolveSelfModel() {
if (selfModel == null) {
selfModel = getParent().getModel();
}
}
public void detach() {
// TODO Auto-generated method stub
}
}
}
example:
public class DateTime extends CompositeComponent {
// ValueMap map = new ValueMap();
private String dateFormat = "MM/dd/yyyy";
private String timeFormat = "H:mm";
private SimpleDateFormat dateFormatter = new
SimpleDateFormat(dateFormat);
private SimpleDateFormat timeFormatter = new
SimpleDateFormat(timeFormat);
public DateTime(String id) {
super(id);
add(new TextField(getDateId(), Date.class) {
public IConverter getConverter() {
return new DateConverter(dateFormat, true);
}
});
add(new TextField(getTimeId(), Date.class) {
public IConverter getConverter() {
return new DateConverter(timeFormat, true);
}
});
setType(Date.class);
}
public DateTime(String id, IModel model, boolean isEmbedded) {
this(id);
setModel(model);
}
private String getTimeId() {
return getId() + "-time";
}
private String getDateId() {
return getId() + "-date";
}
@Override
protected String[] getCompositeInput(List<String[]> list) {
String ret = ArraysUtils.get(list.get(0), 0, "")
+ " "
+ ArraysUtils.get(list.get(1), 0, "");
if (ret.length() == 1) {
ret = "";
}
return new String[] { ret };
}
@Override
protected Object getPartialObject(Component component, Object
modelObject) {
if (modelObject == null) {
return null;
}
try {
if (component.getId().equals(getDateId())) {
return
dateFormatter.parse(dateFormatter.format(modelObject));
} else if (component.getId().equals(getTimeId())) {
return
timeFormatter.parse(timeFormatter.format(modelObject));
}
} catch (ParseException e) {
// cannot happen
throw new RuntimeException("Parsing partial of " +
modelObject
+ " failed", e);
}
return null;
}
/*
* (non-Javadoc)
*
* @see wicket.Component#getConverter()
*/
@Override
public IConverter getConverter() {
return new DateConverter(dateFormat + " " + timeFormat, false);
}
}
Pekka Enberg wrote:
Hi Johan,
(Please cc me as I am not subscribed to the list.)
At some point in time, Johan Compagner wrote:
you could use a FormValidator to validate those 2 fields (as it was
one)
Yeah, this I already have.
At some point in time, Johan Compagner wrote:
to combine the 2 as one value (because the can't et the min and max
inside the IntegerRange object?) You could wrap the 2 text fields in a
formcomponent and use only a MarkupContainer for those textfields (so
not really textfields)
So that from the form point of view there is only one formcomponent
touching the IntegerRange object and that one can do convertValue() to
convert it to a IntegerRange object and test it then and if that all
is ok the converted input will be pushed to the model.
Sounds good. So now that I have use FormComponent, I suppose I can't use
a HTML template but have to do the rendering in
Component.onComponentTag() myself?
Pekka
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Get stuff done quickly with pre-integrated technology to make your job easier
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