Cancelling logic bug

[Robert Ancell <robert ancell gmail com>]

Hi all,

I've raised a bug [1] Ubuntu QA found in GNOME Software where cancelling during multiple installs can cancel the wrong transaction. I'm happy to do the work for a patch for this bug I'm not sure the best way to proceed. In short, I think the solution will probably require something like GsPluginLoader to store the GTasks in progress and GsDetailsPage to find existing transactions when it switches the currently selected app. Does that seem reasonable?

--Robert

[1] https://bugzilla.gnome.org/show_bug.cgi?id=789680