Handling dialog launch and return events

Question

Hello guys!
I have button on tool bar with source code like this:
<af:commandToolbarButton text="Новый-2"
id="ctbNewAttrib2"
launchListener="#{Class1.handleDialogLaunch2}"
returnListener="#{Class1.handleDialogReturn2}"
actionListener="#{Class1.launchPopup}"/>
On the PopUp is Dialog with OK, Cancel buttons and some other input controls.
In java code I have functions:
public void popupCanceled(PopupCanceledEvent popupCanceledEvent) throws IOException {
public void handleDialogClose(DialogEvent dialogEvent) throws IOException {
if (dialogEvent.getOutcome().equals(DialogEvent.Outcome.ok)) {
These funcs work well.
But I can't get control in functions
public void handleDialogLaunch2(LaunchEvent launchEvent) throws IOException {
// Add event code here...
public void handleDialogReturn2(ReturnEvent returnEvent) throws IOException {
// Add event code here...
How I can walk around it and get values from controls on Dialog and otherwise set before Dialog opens?
Please, give me more details if you can, cos I came from C# Forms development.
Thanks a lot.

Answer 1

Here could be one approach:
On you button.. have showPopupBehaviour() -- to launch your popup.
Override Popup's : popupFetchListener --> use it to process logic before popup/dialog is displayed..
Override Dialog's: DialogEvent -- To perform actions when dialog is closed.. check for outcome .. if its yes/ok .. perform your logic.
I guess using these you will not need .. launchListener and returnListener.
Amit