[brailleblaster] Re: How can I test whether a StyledText has changed?
- From: "John J. Boyer" <john.boyer@xxxxxxxxxxxxxxxxx>
- To: brailleblaster@xxxxxxxxxxxxx
- Date: Fri, 10 Jun 2011 11:03:13 -0500
Susan,
Lots of information and good points. BrailleBlaster will have algorithms
for making an xml or utd (Universal tactile document) file from the two
views.
The lack of undo in StyledText could be a problem. I am not sure how it
could be added. I think we would have to copy the code and then modify
it. This would be a new BrailleBlaster class. I'm not sure what if any
problems there would be with doing this. We may have other reasons for
doing it, however. We might even contribute the new class back to
Eclipse.
John
On Fri, Jun 10, 2011 at 09:31:14AM -0600, Susan Jolly wrote:
> I'm not sure this is the right question to be asking at this point. Based
> on the discussion a few days ago, it seemed that you wanted to somehow
> associate the text that a StyledText widget edits to what Chris called the
> other day your "backing store."
>
> With its default use, StyledText makes a copy of your input and manages it
> with its default Content model. Any changes are made to this copy. You
> can, of course, obtain this possibly changed copy via getText() and do
> anything you want with it.(The SWT TextEditor example shows how to save it
> to a file.) However, the copy, changed or not, is obviously not connected
> to any "backing store." Styled Text also allows you to define your own
> Content model by using its setContent().
>
> You can add various Listeners including ModifyListener so the StyledText
> widget will inform you when it makes changes. StyledText doesn't support
> undo, although you could add it. Of course, if you do allow undo then you
> might want to add logic to see whether there are any net changes although
> this would probably be too hard. In my experience, most text editors think
> you've changed a document if you've done any editing even if in fact you've
> effectively undone all the changes.
>
> I've found two articles that are of some help in using the StyledText
> widget but it's definitely not easy to understand.
> http://www.eclipse.org/articles/StyledText%201/article1.html
> http://www.eclipse.org/articles/StyledText%202/article2.html
>
> HTH,
> Susan
>
>
>
>
--
John J. Boyer; President, Chief Software Developer
Abilitiessoft, Inc.
http://www.abilitiessoft.com
Madison, Wisconsin USA
Developing software for people with disabilities
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