FITV POWL TRIPS - Portal Navigation Issues of Custom POWL

Question

Hi All,
This is a bit lengthy as I tried to make everthing as clear as possible.
Here is my requirement:
To create a custom POWER List (POWL) that will display the travel plans, travel expenses, and travel requests of employees, all in one table. This is almost equivalent to that of 'My Employees' page, except that data coming from different employees are consolidated into one table.
Action Taken:
I've created a modified copy of the Feeder Class CL_FITV_POWL_FEEDER_TRIPS and the corresponding Web Dynpro Component FITV_POWL_TRIPS. Also, I've enhanced CL_FITV_NAVIGATION~GET_RESOURCE_KEY, by manually telling SAP to use the resource key of the custom dev't. This is necessary during navigation (i.e. From the custom POWL, after creating a Travel Expense, SAP would know how to navigate back to the custom POWL.)
When tested thru SAPGUI, everything is working fine and as expected. But, when tested from the Portal, the issue occurs.
Scenario: From the custom POWL, try to create an expense report. Then, cancel the expense report creation.
Expected Result: Custom POWL (both custom feeder and custom dynpro component) will be displayed.
Actual Result: The custom dynpro component is displayed with the data coming from the standard feeder.
As I checked the issue, I found that in the method CL_FITV_NAVIGATION~NAVIGATE_TO_OBJECT, there's a different logic for when navigation is done in the Portal and when in SAPGUI. When run from Portal, some method POWL_QUERY_REFRESH is called. Here lies the issue. The import parameter I_QUERY_DATA contains information for the standard feeder, and not the custom feeder. But, when run from SAPGUI, this import parameter contains the correct values.
Now, my question is, where does the value in I_QUERY_DATA come from? How does the Portal handle navigation between objects?
I have also investigated that when run in SAPGUI:
1. Dynpro Init - initialization of dynpro component
2. Navigate to Creation of expense report
3. Navigate back to Dynpro - THIS INITIALIZES THE COMPONENT AGAIN
When run in Portal:
1. Dynpro Init - initialization of dynpro component
2. Navigate to Creation of expense report
3. Navigate back to Dynpro - THIS DOES NOT INITIALIZE THE COMPONENT, BUT ONLY REFRESHES THE DATA
I hope I made things clear and provided all necessary information for anyone to understand the issue.
Thanks and Regards,
Allen

Answer 1

hi,
You should create new class for this powl. Then, you can catch your delete button click action.  You can find all from transaction
FPB_MAINTAIN_HIER or links below :
http://help.sap.com/saphelp_erp2005/helpdata/en/44/36ca0563df660ee10000000a1553f6/frameset.htm http://help.sap.com/saphelp_erp2005/helpdata/en/44/36ca0563df660ee10000000a1553f6/frameset.htm "