this.selectionDialogDetails = selectionDialogDetails;
// Set the validator, which depends on the selection dialog details
// (because that contains the extensions)
this.policyNameValidator =
new PolicyNameValidator(null,
this.selectionDialogDetails.fileExtensions, false);
// Construct the selection dialog, which depends on the selection
// dialog details (for appearance) and the validator (for the extensions)
this.treeSelectionDialog =