Dynamic update of text from JTree manipulation

Question

Hi I working on an application that uses both a JTree and text view at the same time.
What I want to do is everytime a node is added/edited/removed from the JTree the text for that node is dynamically updated in the tree view.
At the moment what I do is everytime something is edited in the JTree the whole text is re-written. This is causing the program to slow down for large files.
What I have thought of doing is producing the text for only the edited node, however this may affect others node, for example if a child node is added the parent node needs a closing tag.
Is there anyway I could possibly do this?
An alternative I had thought of was, because it is the syntax highlighting that is taking the time. I thought I could produce the full text for the edited tree then compare it to the pre-editted text. Then only sytax highlight the difference and add it to the text view. Would this be possible?
Cheers Alex

Answer 1

On 04 Apr 2007 in macromedia.dreamweaver.appdev, DrBlanston
wrote:
> I am trying to figure out a way to update certain fields
on my ASP
> pages based on input from different fields. For
instance, I am
> writing a program with an SQL 2005 database underneath.
This
> program takes data from fields that the user will input
and needs to
> update another field with a calculated result, then
update the
> database.
>
> Example,
>
> TaxRateField * SquareFootage = BilledAmount
> (where all three of these fields are in the table)
>
> When a new record page is there for the end user, I want
them to be
> able to select a rate code (which has a
factor/multiplyer associated
> with it), then enter the Square footage, and have the
> BilledAmount field automatically calculated. So when
they hit the
> submit button, all three values are inserted into the
database.
>
> Any suggestions?
Just enter the rate and the square footage; do the
calculation when you
pull the data from the database. In general, you don't want
information stored in a database which depends on other
information (ie
calculated fields). The prime example is calculating an age
when you
get Date of Birth information.
Joe Makowiec
http://makowiec.net/
Email:
http://makowiec.net/contact.php