Re: [ jEdit-devel ] How to intercept all buffer changes made during text editing?

[Paul L. <pa...@ac...>]

Jessie,

I have seen this already I think. If you look at collaborative =20
editors (or so) on en.Wikipedia, there's a link to such a realization =20=

for jEdit, probably partial.
I remember this one or another was even relying on IRC or Jabber for =20
the communication.

In order to track the changes, the EditBus does a good job, I think. =20
You do not want to touch keystrokes but input and changed things, I =20
think, all are given as far as I remember. At worst, you'll have to =20
make diffs which is normal of such an approach I think.

For the background colour, you'll have to dig deep within the =20
(Highlighter o) JEditTextArea but I think it is doable. The ErrorList =20=

plugin could help you there probably (but keep the ability to have =20
errors at the same time!).
I guess this covers 2 and 3.

paul


Le 19 juin 07 =E0 13:35, Jessie Dedecker a =E9crit :

> My goal is to make a plugin such that jEdit can be used as a multi-
> platform collaborative editor, similar to the functionality offered
> in SubEthaEdit (http://www.codingmonkeys.de/subethaedit/).  For this
> I would require the following base functionality from jEdit:
>
> 1) to be able to track the changes made to text as it happens
> (keystrokes would be ideal for this)
> 2) to track and be able to mark the position of the different carets
> such that users can see in realtime where others users are currently
> editing the text
> 3) to be able to change the background colors of the text (each
> individual user has a different color associated with him such that
> users distinguish between the different changes in the text
>
> Can somebody tell me if this base functionality is present in the
> current jEdit plugin framework.  If not, can somebody please help
> realize this base functionality?
>
> Thank you,
> Jessie
>
> On 19 Jun 2007, at 11:54, Matthieu Casanova wrote:
>
>> Hi, I don't think you can have this information about the content
>> change, what do you want do exactly with that ?
>>
>> Matthieu
>>
>> 2007/6/19, Jessie Dedecker <jed...@vu...>:
>>> Hello all,
>>>
>>> I am new to plugin development in jEdit and am looking to intercept
>>> all buffer changes made during text editing.
>>>
>>> Looking at the API (version 4.2) of the jEdit plugin framework I
>>> understood in the users guide I need to subclass EBComponent and
>>> register it with the EditBus such that I can intercept EBMessage
>>> notifications which signal, amongst others, changes to the buffer.
>>>
>>> However, when I look at the interface of the BufferUpdate class it
>>> seems that I can only access the updated buffer and not the actual
>>> change that has been made to the buffer.  Is this correct or am I
>>> missing some insights in the framework?
>>>
>>> Thanks,
>>> Jessie
>>>
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