El jue, 26-06-2014 a las 21:16 +0200, Emilio Pozuelo Monfort escribió: > Hi, > > Sorry for the late reply. > > On 17/06/14 21:35, Federico Brega wrote: > > 2014-06-09 20:40 GMT+02:00 Emilio Pozuelo Monfort <[email protected]>: > >>> >> For the second issue there is no documentation for python which makes > >>> >> the transition to webkit2 a little slow. > >>> >> Do you have any example about how to execute javascript and get > >>> >> results back in python? > >> > > >> > There is webkit_web_view_run_javascript() and > >> > webkit_web_view_run_javascript_finish(), see > >> > > >> > http://webkitgtk.org/reference/webkit2gtk/stable/WebKitWebView.html#webkit-web-view-run-javascript > >> > > >> > Is that what you need? > > Hello Emilio, > > > > thank you for your help. I had already seen the page you linked, but > > it is C code. It should be straightforward to translate int python but > > it doesn't work, that's why I asked for a python example. > > We tried to make it work with webkit2 but result_js.get_value() throws > > a type error: > > TypeError: Couldn't find conversion for foreign struct > > 'JavaScriptCore.Value' > > I attached a minimal example to better explain how we're using the library. > > Do you have any suggestion? Is it the case to report a bug of > > gir1.2-webkit2-3.0? > > I don't know about that. Perhaps somebody from the upstream ml can shed some > light. Cc'ing it. > > [ for webkit-gtk@: Federico is porting his app from python-webkit (the old > static libwebkitgtk-1.0 python bindings) to gir1.2-webkit2-3.0, see the code > below. ]
Yes, the problem is that webkit_javascript_result_get_value() returns a
JSValueRef, but there's no gobject-introspection for JavaScriptCore API.
I don't think it worked in WebKit1 either, but in WebKit1
webkit_web_view_run_script didn't return anything, so if you are porting
from WebKit1, maybe you can just ignore the return value for now. I have
some comments about the code, see below.
> Regards,
> Emilio
>
> > Regards
> >
> > --
> > Federico
> >
> >
> > example.py
> >
> >
> > from gi.repository import Gtk, WebKit2
> >
> > def get_res(view, result):
> > result_js = view.run_javascript_finish(result)
> > if result_js is None:
> > return
> > v = result_js.get_value()
> > print(v)
> >
> > view = WebKit2.WebView()
> >
> > sw = Gtk.ScrolledWindow()
> > sw.add(view)
In WebKit2 you shouldn't use a GtkScrolledWindow, the web view is
scrollable by itself.
> > win = Gtk.Window()
> > win.connect("delete-event", Gtk.main_quit)
> > win.add(sw)
> > win.set_default_size(400, 200)
> > win.show_all()
> >
> > view.load_uri("http://w3.org/";)
> >
> > view.run_javascript("document.URL", None, get_res)
Note that load_uri is asynchronous too, so it's not guaranteed that the
js will be executed when the page is loaded, you should probably connect
to load-changed signal and run the js when the load has finished.
> > Gtk.main()
>
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>
--
Carlos Garcia Campos
http://pgp.rediris.es:11371/pks/lookup?op=get&search=0xF3D322D0EC4582C3
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