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Model / View Issue

__alex
__alex asked
on
Medium Priority
159 Views
Last Modified: 2010-04-05
Well, this is not a real question but maybe I can benefit from the experience of others. Here it goes: I use a TTreeView to represent my data. If the data changes I've got two options (beside others). A) Rebuild the whole tree. B) Just care about the changes.

Ad A: My representation is always consistent but performance is worse and I loose the focus of the selected node.
Ad B: Performance is high but I hold a copy of my data that may (due a bug) differ from the original data.

What do you prefer?
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Top Expert 2004

Commented:
i would prefer C:

modify your tree(node),
actualize the data

who changes the data?
you within the tree, or someother in the data (file?)?

above is for
-you within the tree

meikl ;-)

Author

Commented:
It is me but from somewhere else.
Top Expert 2004

Commented:
>It is me but from somewhere else.
??? rephrasing the question
does your instance changes the data, or any other instance

if first, then C
if second, then B

A depends on the amount of data

meikl ;-)

Author

Commented:
The data can be changed from outside my form and from the form containing my tree view. Changing one node can lead to multiple changes in other nodes:

Example:
node: Main_1
     node: Child_1   ***
     node: Child_2
node: Main_2
     node: Child_3
     node: Child_1   ***

Renaming Child_1 must appear in the node in Main_1 and in the node in Main_2.
Top Expert 2004
Commented:
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Commented:
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