Problem with Two tab canvases in a form

Question

Hi Experts,
I am working on Oracle forms 10g (OS: Windows7) from last 1 year. I have got a requirement to create a form with one tab canvas CAN_TAB (with 2 tab pages) in main page and a pop up tab canvas ASN_SPLIT_TAB(with 2 tab pages). Now the problem is whenever we click on tabs it will fire WHEN-TAB-PAGE-CHANGED trigger and executes the complete code. As a result even if i click a tab page in CAN_TAB canvas it will fire for ASN_SPLIT_CANVAS as well. Check the below code (WHEN-TAB-PAGE-CHANGED). Now i have to differentiate between two tab canvases so that i can use IF-ELSE statement to overcome this problem. Please share your useful comments.
BEGIN
Lv_Toppage := Upper(Get_canvas_property('CAN_TAB',Topmost_Tab_page));
  if Lv_Toppage = 'LINES' THEN 
  go_item('shipment_summary.shipment_reference');
  show_view('CAN_LINES');
  show_view('CAN_SCROLL');
  elsif Lv_Toppage = 'ATTRIBUTES' THEN
  go_item('shipment_summary.shipment_reference');
  show_view('CAN_ATT' );
  elsif Lv_Toppage = 'AUDIT' THEN
  go_item('shipment_summary.confirmedby');
  show_view('AUDIT');
  end if;
Lv_Toppage := Upper(Get_canvas_property('ASN_SPLIT_TAB',Topmost_Tab_page));
  IF Lv_Toppage = 'INVOICE_SPLIT' THEN
  show_view('ASN_SPLIT_STACK');
  go_item('ASN_INBOUND_CATEGORY_SUMMARY.brand_representitive');
  ELSIF Lv_Toppage = 'SUPPLIER' THEN
  go_item('CONTROL.cancel_but');
  END IF;
  hide_view('ASN_SPLIT_STACK');
END;

Answer 1

Thanks Craig. You made it happen..!! Below code is working fine for me.
IF :SYSTEM.tab_new_page = 'LINES' THEN
  go_item('shipment_summary.shipment_reference');
  show_view('CAN_LINES');
  show_view('CAN_SCROLL');
ELSIF :SYSTEM.tab_new_page = 'ATTRIBUTES' THEN
  go_item('shipment_summary.shipment_reference');
  show_view('CAN_ATT' );
ELSIF :SYSTEM.tab_new_page = 'INVOICE_SPLIT' THEN
END IF;