On Tue, Nov 13, 2018 at 11:35 AM Tony Houghton <h...@realh.co.uk> wrote:
> On Tue, 13 Nov 2018 at 16:01, <makep...@firemail.cc> wrote: > >> Please consider sending a pull request to ts-for-gjs with definitions >> and tests for registerClass, if you have time before I can write them. >> It's a relatively new thing, haven't needed it yet. So far the focus has >> been on GObject introspection. Definitions for other built-ins, such as >> package, signals and system, would be helpful too. >> > > Unfortunately I'm a complete newbie with both gjs and typescript, so I > wouldn't really know how to make such definitions, or even know for sure if > registerClass is (still) officially supported. > registerClass is currently the only supported way to inherit from GObject classes. There is Lang.Class which still works, and I will take PRs to fix bugs in it, but it is considered legacy. (By the way, it's written so that it *should* work fine as a decorator in typescript. If you add a definition for it, it might make sense to document it as a decorator. My plan is to make the decorator the main supported way to inherit, once decorators are supported in the main javascript standard.) Wouldn't say that has-a relationships and signals are an old way, just >> one of the ways and quite useful at that. >> > > Yes, it does the job, but it seems a shame that I can't take advantage of > all the facilities that should be available by using GObject with an OO > language. I suppose a good way to proceed for now would be to compromise by > deriving Typescript classes from GObject classes but assume that I can't > override native virtual functions this way and use signals instead. > You can override the virtual functions, but they all start with vfunc_. You can find them in the documentation, for example Gtk.Widget's virtual functions start here: http://devdocs.baznga.org/gtk30~3.22.12/gtk.widget#vfunc-adjust_baseline_allocation Regards, Philip C
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