Editing record items in a multi-record block - 1 record at a time.

Question

Hello,
I have the following scenario: Currently in my multi-record block, to edit an item of a record, the user has to double click on the record to enable the 'save changes' button. However, I want to turn the navigation to all other records turned off. The only way the user should be able to edit other records is save changes first, then again double click on the desired record to re-enable the 'save changes' button (at this time navigation to all other records should be turned off). ie., the user should be able to edit 1 record at a time (At any given time, I won't be having many records in the block which the user may have to modify).
How can this be achieved?
Thanks,
Chiru

Answer 1

That is pretty odd requirement, but this might work:
When the user double-clicks the record, enable the Save button, and set a value in any column of the record to its current value. This will cause Forms to set the record status to CHANGED, and will not permit navigation away from the record until the When-validate-record trigger runs successfully.
In the Save button, start a non-repeating timer to run maybe 20 milliseconds, then issue a Validate(Record_Scope); command. Check form_success then commit_form.
In the when-validate-record trigger: Do any record validation that may be necessary, and Raise Form_Trigger_Failure if anything is wrong. Then check for the existence of your Save button's timer. If it does NOT exist, issue a message like: "You must Save the changes first" and Raise Form_Trigger_Failure; If the timer exists, do not raise the error.