I wonder if the reference to the JFrame is for a messaging system. In Borland/Windows, a GUI object has both an 'owner' (one responsible for utimately destroying it) as well as a 'parent' (one from whom one receives windows messages). I can't see why your objects would need to reference the JFrame (is this a graphic frame?) unless it was for messaging (i.e. "time to repaint your area!")
Kevin --- Gregory Woodhouse <[EMAIL PROTECTED]> wrote: > This is a good example of a design pattern, and it > is perhaps > understandable that a pattern like this would be > built into the > language given the focus on GUI applications. But > one of the things > I like least about Swing (the primary GUI framework > for Java) is that > you end up passing a reference to a JFrame to > objects like dialogs. > Sure, it's useful because there has to be some way > of communicating > what ever data you entered through the dialog back > to the main > application which, believe it or not, is usually an > instance of > JFrame (!) Ugh. Maybe I'm missing something obvious, > but that seems > to me like a completely unnatural way to use > inheritance -- and I > like Java. > === > Gregory Woodhouse > [EMAIL PROTECTED] > > "The whole of science is nothing more than a > refinement > of everyday thinking." -- Albert Einstein > > > On Jul 11, 2005, at 3:55 PM, Kevin Toppenberg wrote: > > > In Borland's VCL, every object that is created > must > > supply an Owner parameter. Then, during creation, > > that owner is notified of the new object, and they > add > > it to their list of objects they are responsible > for. > > Then, whenever an object is deleted, its > destructor > > makes sure to destroy all the objects that it is > > responsible for. This helps prevent lost memory > > allocations, though Borland also uses other > methods as > > well to ensure appropriate garbage collection. > > > > I would think a similar system could be used for M > > "objects". But the programmer would have to be > sure > > to call the "object's" destructor rather than just > > killing it. > > > > Kevin > > > > > > ------------------------------------------------------- > This SF.Net email is sponsored by the 'Do More With > Dual!' webinar happening > July 14 at 8am PDT/11am EDT. We invite you to > explore the latest in dual > core and dual graphics technology at this free one > hour event hosted by HP, > AMD, and NVIDIA. To register visit > http://www.hp.com/go/dualwebinar > _______________________________________________ > Hardhats-members mailing list > Hardhats-members@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/hardhats-members > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ------------------------------------------------------- This SF.Net email is sponsored by the 'Do More With Dual!' webinar happening July 14 at 8am PDT/11am EDT. We invite you to explore the latest in dual core and dual graphics technology at this free one hour event hosted by HP, AMD, and NVIDIA. To register visit http://www.hp.com/go/dualwebinar _______________________________________________ Hardhats-members mailing list Hardhats-members@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/hardhats-members
