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Re: SWT History and Design Decisions (WAS: [platform-swt-dev] AWT Toolkit using SWT (was: From Swing to SWT))
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It is so interesting how over time we come to a common knowledge space
about engineering principles. Many moons ago, I was looking at
controllers and widgets and said, ah hah! We need an adapter which
easily propagates the lifecyle, action and property set of a widget.
Thus was borne the adapter property in the base class of the Conga
widget set.
http://opendoors.com/conga/2.2/docs/javadoc/marimba/gui/WidgetAdapter.html
indicates the basic structure of the Conga adapter interface.
An adapter implementation will provide bi-directional association and
flow of messages between the widget adapted and the from the
presentation controller.
regards,
Lane
Christian Gruber wrote:
... which is half the reason it feels so right to me... based on a
SmallTalk GUI approach... hmmm.... yummy.
Seriously, though. My previous e-mail about using adaptors should fit
quite nicely, as it was developed for a similar system.
Cg.
-----Original Message-----
From: platform-swt-dev-admin@xxxxxxxxxxx
[mailto:platform-swt-dev-admin@xxxxxxxxxxx] On Behalf Of David Whiteman
SWT originally was developed by OTI as an internal toolkit for use in
building its VisualAge Micro Edition IDE. The SWT API evolved out of
the widget classes found in VisualAge Smalltalk. At the time of its
development, Swing was limping along at version 1.0, and OTI was able
to build SWT quickly due to the fact that it was essentially a port
from its Smalltalk work. I.e. I don't think the original intent was
to develop a reusable externally available toolkit. But since it
turned out so well, it seemed like something others would want: a good
performing widget toolkit that used a mix of native and custom
widgets.
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--
Lane Sharman
http://opendoors.com Conga, GoodTimes and Application Hosting Services
http://opendoors.com/lane.pdf BIO
