Navigation
Navigation in Arena is very simple: you instantiate a Panel and then you open it. Panel can be a subclass of Window or Dialog.
Suppose you are in a Search Window with a "New" button. What should this button do?
// Xtend new CreateCustomerDialog(this).open // Java new CreateCustomerDialog(this).open();
Navigation back
Dialogs offer a way to define behavior once they are closed. This can be done before they are opened:
// Xtend val dialog = new SomeKindOfDialog(this, modelObjectForSomeKindOfDialog) dialog.onAccept [ | modelObject.search ] dialog.open // Java SomeKindOfDialog dialog = new SomeKindOfDialog(this, modelObjectForSomeKindOfDialog); dialog.onAccept(getModelObject()::search); dialog.open();
In the above example we instantiate the dialog, and before we open it we define that as soon as the dialog is closed we should trigger a search the model object in the parent view.
Passing data to another view
As windows are objects, we can use two well known mechanisms to pass data between two views:
- sending objects in the constructor
- assigning a reference in a setter method
public void editCustomer() {
this.openDialog(new EditCustomerWindow(this, this.getModelObject().getCustomerSelected()));
}