Re: [eclipse-dev] JDK 1.3 support for SWT

[Steve Northover <Steve_Northover@xxxxxxxxxx>]

On Wed, 2004-07-28 at 17:08, Steve Northover wrote:
> Do you have a specific problem under JDK 1.3 Windows?  If so
enter a
> problem report. Thanks.

To summarize, mouse events are not propogated
under JDK Windows 1.3 but are correctly propogated under JDK 1.4?  If
this is what you are saying, then update the problem report.  From
the SWT_AWT Javadoc, it appears that this problem also happens under JDK
1.5 so it is possible that Sun fixed it for 1.4 and broke it again for
1.5.  In any case, since the Javadoc describes a work around, it is
unlikely that we can fix the problem.  We simply don't own that side
of the code.

In general:

Rather than reading the source, why
don't you just report the problem and give the details?  The JDK1_3
variable in the class SWT_AWT seems to be working around an internal AWT
focus issue.  It might be related to the problem you are seeing and
it might not.  If you have done research that proves that it is related,
then indicate it in the problem report (ie. something like, "I set
JDK1_3 to false, even though I am running on 1.3 and it worked.  The
flag is therefore bogus and causing the trouble.").  Otherwise,
why bring it up at all?  The names of the internal variables in SWT
just aren't relevant.

Background to the problem of "mouse
events not propogated" is the fact that we really only support JDK
1.4 Windows and JDK 1.5 Linux.  SWT_AWT may run under JDK 1.3 Windows,
but the code is largely untested.  For example, SWT itself (the widgets
and graphics) actually runs under JDK 1.1.x but we don't support it or
test it.  This means that we may accidently work in configurations
that are untested without officially supporting them. The burden of officially
testing and supporting every combination of operating system and JDK is
just too huge.  We would die.

Martin van den Bemt <mllist@xxxxxxxx>
Sent by: eclipse-dev-admin@xxxxxxxxxxx

07/28/2004 11:38 AM

Please respond to
eclipse-dev

To	eclipse-dev@xxxxxxxxxxx
cc
Subject	Re: [eclipse-dev] JDK 1.3 support for SWT

I think it is clearly explained in my mail what the
issue is. 
You say you don't support 1.3, but code says different. The issue I have
was filed, changed by you and others and completely misunderstood,
misread or whatever, closed, reopened by me, explaining again, again
misunderstood and closed again.
I said I have a problem with oranges, you made my problem about apples.

So a last try, like I would have explained to my great grandmother :
- Open the SWT_AWT.java file
- Look at the code
- See references the a static JDK13 variable
- Guessing from that, it supports JDK 1.3
- Create a new java file
- Copy & Paste the code that is in the issue
- Run it under jdk1.3
- Frame0 receives mouse events, but doesn't propagate to other
components
- Run it under jdk1.4
- It works.

The answer I got from you says : The javadoc states "In jdk 1.5 blah
blah" and we don't support 1.3.

That leaves you with a couple of possible issues :
1) If you don't support jdk 1.3, you should remove 1.3 code, so you have
less point of failures and less code to maintain.
2) Your javadoc is wrong and means to say jdk 1.3, which means you also
have a bug.
3) Jdk 1.3 should work, so this needs fixing ?

Please chose an option of what is really what you meant..

Sorry about the ranting tone, maybe we are just talking different
languages..

Mvgr,
Martin

On Wed, 2004-07-28 at 17:08, Steve Northover wrote:
> Do you have a specific problem under JDK 1.3 Windows?  If so
enter a
> problem report. Thanks.
> 
> 
> 
> Martin van den Bemt
> <mllist@xxxxxxxx>
> Sent by:
> eclipse-dev-admin@xxxxxxxxxxx
> 
> 07/27/2004 08:09 PM
>          Please respond to
>             eclipse-dev
>                To
> eclipse-dev@xxxxxxxxxxx
>                cc
> 
>           Subject
> [eclipse-dev] JDK
> 1.3 support for
> SWT
> 
> 
> 
> 
> Maybe this is the wrong list, but at least some developers are present
> of eclipse, that I assume know what the exact deal is.
> I filed an issue today
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=70918
> which talks about problems I have with the SWT_AWT class running under
> jdk1.3, and somehow I got some answers about using jdk 1.5 and 1.3
not
> being supported, although this particular piece of code contains some
> specifics for JDK1.3. I got pissed of at the answers, since they
> aren't
> answers.
> Also for now SWT 3.0 seem to work ok for me running on a jdk 1.3
> (windows)
> So maybe I can get some clear answers to my questions here :
> - Why is jdk 1.3 not supported ? (eg OLE works great on jdk1.3)
> - SWT_AWT.java contains code specifically for JDK 1.3 and was added
> when
> you guys started working on version 3, why is the code in there if
it
> is
> not supported. Was it decided later and the was the code never removed
> ?
> (I assumed it needed 1.4, but since the 1.3 code was in there, I went
> ahead anyway).
> - Is there a link that specifies what changed to make stuff not work
> under 1.3 ?
> 
> I cannot make important decisions (in this case a move from jdk1.3
to
> 1.4, which is pretty time consuming), if I see contradictions. The
> code
> pretends it works under 1.3, it fails, so it is bug, in my point of
> view. If you don't want to support 1.3, code should be removed (less
> testing, less possible errors, less code), which is a "bug"
too or at
> least a chore.
> 
> I know you don't owe me any explanation for this of any kind (since
it
> is free code and all), but too treat an issue like that, is something
> I
> probably don't deserve, based on the information in the issue
> provided.
> 
> -- 
> Mvgr,
> Martin
> 
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-- 
Mvgr,
Martin

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