[Bf-python] Source code for 2D Stabilization UI

[Leo Sutic]

Hi all,

I'm writing a Python script that will modify movie tracking tracks to 
make them better suitable for 2D stabilization. The idea is to use the 
feature tracking to create tracks, then use this script to create *new* 
tracks from the existing ones, and finally to use the new tracks in the 
2D stabilization.

I have the actual modification algorithm all done and tested. All I have 
to do is feed it an input track and an output track, and it works great.

What I'm now trying to do is create a nice UI for it, and here I would 
like a UI panel with a list of tracks for the current clip, a box to 
select the output track and a button that says "Execute":

     Input:
     [ Track      ] +
     [ Track.001  ] -
     [            ] V
     [            ]

     Output:
     [            ] +

     (   Execute   )

In short, I'd like to duplicate the 2D Stabilization panel, remove some 
stuff and put my own code behind the "Execute" button.

I have the button figured out and working, but for the life of me I 
can't figure out how to do the list of input tracks and the single box 
for the output track.

The space_clip.py contains the UI for the panel, but I'm completely lost 
as to how to declare the right properties so that the template_list 
function will be happy.

I suspect that the answer is somewhere in the Blender source code and in 
the definition of bpy.types MovieTrackingStabilization, but I can't find 
it. Anyone knows where it is?

/LS