List of tables: how to interactively update and not loose the selection

miguello

I have seen discussion on this topic, and I couldn't find the solution.

The problem is the following:

 

I'm orking with the list of tables that is displayed in a List Box. I use N Table() way of getting a list of names for all the tables.

What I want is that if I click to select any lines in that list - the list itself updated and checked if there are new opened tables or some tables were closed.

Good wat to do that is to use Set Items(openDTs) each time I click to select. It updates the list of tables just fine - the problem is it drops the selection.

If I use Append(openDTs) on the List Box - it adds whatever new tables were opened, but if I close the table, it does not delete the closed table.

 

What is the most elegant and correct way of having the list of the tables being updated, reflecting opened and closed tables upon any click on the list, so that selection is kept?

miguello

For now I solved it this way:

 

I remember the name of the selected table, then I use Set Items to completely rewrite, then I iterate through the whole list and compare remembered name with the new list (order, therefore indeces might be different now!). As soon as I hit the same name, I remember that index and set seceted using this index.

 

Here is the code:

listofTablesSelect=Function({this},{selectedIndex},
	// This function is called when the List Box selection changes
	
	selectedIndex = this << Get Selected;
	selectedTableName = selectedIndex[1];
	refreshListofTables();
	for (i=1, i<=N Items(listofTablesList = this<<Get Items), i++, 
		if(listofTablesList[i] == selectedTableName, recallIndex = i);	
	);
	this << Set Selected(recallIndex);

Where refreshListofTables uses Set Items:

refreshListofTables = Function({}, 
Show("Trying to refresh list of tables");
openDTs = List();
For( i = 1, i <= N Table(), i++,
	Insert Into( openDTs, Data Table( i )<<Get Name() );
	);
return(openDTs);
listofTables<<Set Items (openDTs);
);

The only thing that I don't like: Log Window is displaying "JSL recursion prevented" - where exactly is the recusrion? Is 

this << Set Selected(recallIndex);

effectively calling the whole 

refreshListofTables

 again, therefore going into resursion?

Any way around it?

 

Thakns, 

M