[news.eclipse.platform] Re: Synchronizing open editors on the same file

[Daniel Megert <daniel_megert@xxxxxxxxxx>]

Marc E wrote:
> I found the difference: TextEditor uses TextFileDocumentProvider 
> instead of FileDocumentProvider.
>
> Interestingly enough, this is in the javadoc:
>
> * Text file document providers use {@linkplain 
> org.eclipse.core.filebuffers.ITextFileBuffer text file buffers}
> * to access the file content. This allows to share it between various 
> clients including
> * headless ones. Text file document providers should be preferred over 
> file document
> * providers due to this advantage.
>
> Here's one of those cases where a dude like me says, "if it's 
> preferred, then why doesn't the wizard generate code that uses this 
> one instead!?"
Which wizard? Simply looks like the wizard needs some updating.

Dani
> I"m sure there's quite a good reason.  For example, I don't see 
> anything immediately obvious for partitioning, so maybe that's it. Not 
> sure.
>
> Anyway.... looks like I at least found the path to go down. I sure was 
> hoping for a 3-line "oh, dude, just add this listenener..." kind of 
> answer, which so often seems to be the case.
>
> Time to get my game face on!
>
> marc
>
>
> "Eric Rizzo" <eclipse-news@xxxxxxxxxxxx> wrote in message 
> news:gncqno$u5d$1@xxxxxxxxxxxxxxxxxxxx
> > On 2/16/2009 1:10 PM, Marc E wrote:
> > > All,
> > > I'm interested in contributing this feature to an open source project
> > > based on Eclipse. I have done a fair amount of plugin programming but
> > > never any Editor programming.
> > > Basically, the editor in this project doesn't currently support
> > > synchronization between two open editors on the same file. For example,
> > > if I have any text file, and I open it in the Default Text Editor, then
> > > choose "New Editor" and modify that file in one editor, the other 
> > > editor
> > > automatically reflects those changes. I'd like to add that behavior 
> > > into
> > > the editor in this project.
> > > Can someone point me down the right path?
> >
> > I think this is more of a fundamental design problem than a 
> > particular code problem. The editor in question must be using some 
> > kind of backing model that can be shared between editor instances. If 
> > it does not have some kind og in-memory model that is sharable, I'm 
> > not sure if you can do what you want.
> > If EMF is involved, this is quite doable. But if not I would first 
> > look at the code of the basic text editor to see how they are doing 
> > it. Try org.eclipse.ui.editors.text.TextEditor
> >
> > Hope this helps,
> > Eric