wicket persistent object between panels - list

Question

In wicket without saving to the session how can i have a persistent object for example a list which can be set in one panel and accessed from another. Iv done a lot of googleing and im not entirely sure how this would work. Any help would be appreciated greatly! Thank you.

Answer 1

Related to the comments above, I will try and explain what I was thinking.
Disclaimer: It's been more than a year since I worked with Wicket, so the following should be read as an overall proof-of-concept. I cannot guarantee that it will compile (actually, I can almost certainly guarantee that it will not.)
public class MyPage extends ... {
...
MyPageModel pm = new MyPageModel();
add(new MyPanel1(pm));
add(new MyPanel2(pm));
...
}
public class MyPageModel implements Serializable {
private IModel<List<MyDataObject>> dataObjects;
public MyPageModel() {
this.dataObjects = // Load list from somewhere
}
public IModel<List<MyDataObject>> getDataObjects() {
return this.dataObjects;
}
}
public class MyPanel1 extends ... {
private MyPageModel pageModel;
public MyPanel1(MyPageModel pageModel) {
this.pageModel = pageModel;
...
add(new ListSomethingComponent<MyDataObject>(pageModel.getDataObjects)); // Some list renderer component which takes a IModel<List<MyDataObject>> as data
}
}
public class MyPanel2 extends ... {
private MyPageModel pageModel;
public MyPanel2(MyPageModel pageModel) {
// Same as MyPanel1...
}
}