On Friday 15 November 2002 1:25 am, John Levon wrote:
> On Fri, Nov 15, 2002 at 11:11:26AM +1000, Allan Rae wrote:
> > Can't you just make controller.OKButton() call save() for you since
> > "Save" is really just a relabelled OK button? (overloading maybe?)
>
> good idea. Let's see...
>
> > I haven't managed to find time to understand how MVC works yet...
>
> Me neither.
A quick summary:
The controller provides the view with a temporary of the thing to be
modified. Usually:
Params & params();
This variable can be filled by the view at any time, but it usually happens
when the controller in View::apply(), invoked by the controller. Ditto,
View::update() takes the contents of Controller::params() to initialise the
widgets.
Pressing the Ok, Apply, Cancel and Restore buttons results in
void ControlButtons::OKButton();
void ControlButtons::ApplyButton();
void ControlButtons::CancelButton();
void ControlButtons::RestoreButton();
being called. Ie, the view returns control over what happens next to the
controller.
To see what exactly the Controller does, have a look at ControlInset.tmpl for
the dialogs dealing with inset dialogs and at ControlDialog.tmpl for all
non-inset dialogs.
Regards,
Angus
