Navigation: ABC Library Reference > WindowManager > WindowManager Methods >====== Update (prepare records for writing to disk)  ====== |    |
Update, VIRTUAL
The Update method prepares the WindowManager's FILE and VIEW records for writing to disk by synchronizing buffer contents with their corresponding screen values. The Update method also arms automatic optimistic concurrency checking so an eventual write (PUT) to disk returns an error if another user changed the data since it was retrieved.
Implementation:
The Update method calls BrowseClass.UpdateViewRecord for each BrowseClass object added by the AddItem method.
Example:
ThisWindow.TakeAccepted PROCEDURE()
Looped BYTE
CODE
LOOP
IF Looped
RETURN Level:Notify
ELSE
Looped = 1
END
PARENT.TakeAccepted()
CASE ACCEPTED()
OF ?Expand
ThisWindow.Update
?CusTree{PropList:MouseDownRow} = CHOICE(?CusTree)
DO REL1::ExpandAll
OF ?Contract
ThisWindow.Update
?CusTree{PropList:MouseDownRow} = CHOICE(?CusTree)
DO REL1::ContractAll
OF ?Insert
ThisWindow.Update
?CusTree{PropList:MouseDownRow} = CHOICE(?CusTree)
DO REL1::AddEntry
OF ?Change
ThisWindow.Update
?CusTree{PropList:MouseDownRow} = CHOICE(?CusTree)
DO REL1::EditEntry
OF ?Delete
ThisWindow.Update
?CusTree{PropList:MouseDownRow} = CHOICE(?CusTree)
DO REL1::RemoveEntry
END
RETURN Level:Benign