image provider does not emit sourceChanged signal

[Michael Zanetti]

importing Ubuntu.Components breaks Image's (and BorderImage's) sourceChanged signal.

Check out the attached code snippet. All it does is to change the image source when clicking the button. Now, if you run it as is, you will see the print("source changed!") happening every time the Image's source changes.

Now, open the file and uncomment the import for Ubuntu.Components 0.1. Repeat the experiment.

=> the sourceChanged signal is gone.

[Florian Boucault (fboucault)]

The issue is likely to be with qmlRegisterExtendedType that does not proxy the property change signal from the extension object to the extended object.
Oddly, even firing the 'sourceChanged' signal on the extended object manually does not seem to work.

[Albert Astals Cid (aacid)]

I lost around one hour trying to figure out and tracking why my code wasn't working, it'd be great if this gained some priority so we don't get devels pulling the hair out and leaving the platform because such basic things as onChanged handlers don't work.

[Zsombor Egri (zsombi)]

All we have to do is not to define change signal, but use the original QQuickImageBase's change signal. That's it.

[PS Jenkins bot (ps-jenkins)]

Fix committed into lp:ubuntu-ui-toolkit/staging at revision None, scheduled for release in ubuntu-ui-toolkit, milestone Unknown