[Bug 727880] Expose TitleSource children properties as any other child properties in a GESTrackElement

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=727880
  GStreamer | gst-editing-services | git

--- Comment #5 from Thibault Saunier <tsaunier at gnome.org> 2014-10-29 12:49:16 UTC ---
Created an attachment (id=289590)
 View: https://bugzilla.gnome.org/attachment.cgi?id=289590
 Review: https://bugzilla.gnome.org/review?bug=727880&attachment=289590

trackelement: Add a lookup_child vnethod

This method can be used for subclass to override the default behaviour
for child lookup. This vmethod can be used for example in the case where
you want the name of a child property to be 'overriden'.

As an ex example in the GESTitleSource where we have a videotestsrc
which has a 'foreground-color' property that is used in the TitleSource
to set the background color of the title, this vmethod is now used to
tweak the name passed has parametter to rename "background" to
"foreground-backend" making our API understandable.

API:
  GESTrackElement::lookup_child

-- 
Configure bugmail: https://bugzilla.gnome.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the QA contact for the bug.
You are the assignee for the bug.