Hi James
Point(s) noted. I have got something going here and it is working but is
this what you meant? Please see attached code and do bear with my questions.
The variable studyReference which is the one that is wrapped within a
PropertyModel, remains or maintains the same reference even if the object
model is changed. So that is the key I suppose not to change the study
reference bound to the DDC any time and we wrap this in a property model.
Still have to get to grips with Models.
Thanks for the help
Cheers
Niv
/* Form that contains the dropdown other form fields*/
public class LookupForm extends Form{
private TextField<String> studyName;
private TextField<String> chiefName;
private AjaxButton lookupButton;
private DropDownChoice<StudyStatus> studyStatusDpChoices;
public LookupForm(String id,Model<StudyContainer> model){
super(id,model);
}
public void initForm(){
Model<StudyContainer> studyContainerModel = (Model)getModel();
//Create a propertyModel to bind the components of this form,
the root which is StudyContainer
PropertyModel<Study> pm = new
PropertyModel<Study>(studyContainerModel,"study");
//Just to know what the initial study reference is
final Study studyReference = pm.getObject();
studyName = new TextField("studyName",new
PropertyModel<String>(pm,"studyName"));//Create another new PropertyModel of
type Study
chiefName = new TextField("chiefName", new
PropertyModel<String>(pm,"chiefName"));
lookupButton = new AjaxButton("search"){
@Override
protected void onSubmit(AjaxRequestTarget target,
Form<?> form) {
Model<StudyContainer> iModel =
(Model)getModel();
doLookup(target,studyReference);
}
};
ChoiceRenderer defaultChoiceRenderer = new
ChoiceRenderer("name", "studyStatusKey");
//Another PropertyModel for rendering the DropDowns and pass in
the Property Model instance of type Study
PropertyModel<Study> pmStudyStatus = new
PropertyModel<Study>(pm,"studyStatus");
//Static list
List<StudyStatus> studyStatusList = new
ArrayList<StudyStatus>();
StudyStatus ss = new StudyStatus();
ss.setName("Active");
ss.setStudyStatusKey(new Long("1"));
studyStatusList.add(ss);
ss = new StudyStatus();
ss.setName("Inactive");
ss.setStudyStatusKey(new Long("2"));
studyStatusList.add(ss);
studyStatusDpChoices = new
DropDownChoice("studyStatusDDC",pmStudyStatus,studyStatusList,defaultChoiceRenderer);
add(studyName);
add(chiefName);
add(studyStatusDpChoices);
add(lookupButton);
}
protected void doLookup(AjaxRequestTarget target, Study study){}
}
public class Lookup extends Panel{
Model<StudyContainer> studyContainerModel;
public Lookup(String id) {
super(id);
}
public void initialise(){
studyContainerModel = new Model<StudyContainer>( new
StudyContainer());
LookupForm lookupForm = new LookupForm("lookupForm",
studyContainerModel){
protected void doLookup(AjaxRequestTarget target, Study
studyReference){
StudyContainer studyContainer =
(StudyContainer)this.getModelObject();
//Get the currently populates study info
Study currentStudy = studyContainer.getStudy();
System.out.println(currentStudy.getChiefName());
StudyStatus status =
currentStudy.getStudyStatus();
System.out.println(status.getName());
//Simulate a user's select operation and reset
the study
StudyContainer newOne = new StudyContainer();
Study selectedStudy = new Study();
selectedStudy.setChiefName("Testing");
selectedStudy.setStudyName("Testing");
newOne.setStudy(selectedStudy);
this.setModelObject(newOne);//Set it with the
new model object with the study that was selected
//The studyReference instance always refers to
the original study that was used to populate the drop down never changes
String studyRefDetails =
studyReference.getStudyName() + " " + studyReference.getStudyStatus().getName();
System.out.println("\n: 2:"+ studyRefDetails);
}
};
lookupForm.initForm();
add(lookupForm);
}
}
public class StudyContainer implements Serializable{
private Study study;
private List<Study> studyList;
/**
* Constructor
*/
public StudyContainer(){
study = new Study();
studyList = new ArrayList<Study>();
}
//Accessor for study
public Study getStudy() {
return study;
}
public void setStudy(Study study) {
this.study = study;
}
//Accessor for study List
public List<Study> getStudyList() {
return studyList;
}
public void setStudyList(List<Study> studyList) {
this.studyList = studyList;
}
}
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