Sunday, May 30, 2010

Re: Menubar - retrieving the selected menu item within the Command object?

Thanks a log!

It seems that its the style of java programming to instantiate new
classes all the time. In this case, the normal way seems to be to
declare a new class for every menu item and to instantiate each of
these classes a single time, just to connect a menu item to a piece of
code. Ist this the normal way in java? Doesn't this blow up the code
in an unnecessary way??

Magnus

On May 29, 8:25 pm, kozura <koz...@gmail.com> wrote:
> No, but you can do something close:
>
> m.addItem("Login", new MenuCmd(1));
> m.addItem("Logout", new MenuCmd(2));
>
> class MenuCmd implements Cmd
> {
> private int whichCmd;
> public MenuCmd(int which) {whichCmd = which;}
> public execute()
> {
> switch(whichCmd)...
> }
>
> }
>
> On May 29, 8:08 am, Magnus <alpineblas...@googlemail.com> wrote:
>
> > Hi,
>
> > I would like to give all my menu items the same command object:
>
> > m.addItem ("Login", cmd);
> > m.addItem ("Logout", cmd);
> > m.addItem ("Register",cmd);
> > ...
>
> > Is it possible to retrieve the selected menu item within the command
> > object's method "execute"?
>
> > The reason is that I want to keep my code compact, i. e. using a
> > single method that reacts on menu item selections and distinguishes
> > the items with a select statement...
>
> > Many thanks
> > Magnus

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