Re: Subclassing a GObject in Typescript

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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.

Wouldn't say that has-a relationships and signals are an old way, just 
one of the ways and quite useful at that.

On 2018-11-13 15:51, Tony Houghton wrote:
> Is it possible to write a class in Typescript that derives from a
> GObject class and overrides its virtual native methods? GTK3
> encourages subclassing instead of the old GTK2 way of using has-a
> relationships and connecting signals, but all the Typescript examples
> I can find use the old way.
>
> The only other thing I've got to go on is the gjs wiki which has an
> example of using GObject.registerClass(), but that seems to be
> something added to GObject by gjs; I can't find an equivalent in
> GObject's C API and it isn't available in the GObject.d.ts generated
> by ts-for-gjs.
>
> My inference is that if this registerClass() thing still exists in gjs
> and is described in the wiki, then it must be a necessary step, and if
> I just try to extend a G class in Typescript (or plain Javascript) I
> won't be able to do things like override native methods.
>
> --
>
> TH
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