[udig-devel] ActiveMapTracker and Visible Maps

[Emily Gouge <egouge@xxxxxxxxxxxxxxx>]

I've come across a problem with the ActiveMapTracker that I'm looking 
for input on how to fix it.

I have an application where the perspective includes a MapPart.  As a 
result when I start the application the map is shown by default. 
However when I set the viewport bounds on the map, I see nothing.  I 
tracked this down to the render manager only refreshing the map if the 
map is the current map:

if (ApplicationGIS.getActiveMap() != null && 
ApplicationGIS.getVisibleMaps().contains(ApplicationGIS.getActiveMap())){
    //refresh map
}

Somehow at this state the visible maps list is empty and the active map 
is a non-existent map; so the map is not being drawn.

I tracked this down to the ActiveMapTracker (which is tracking the 
visible maps and active maps).  Normally when I create a new view and it 
becomes visible the partVisible code is run which updates the visible 
maps list.  However it seems because this view is part of a perspective 
being opened by default this code is not being run.  (The view is added 
to the perspective using a perspectiveExtension extension point)

A little more hacking and I've found that if I change the partOpened 
function to not only add the currentPart to the openMaps list, but also 
the activeParts and visibleMaps list then my program draws the map 
correctly.

I suspect this hack is bad and has other unknown implications; so I'd 
like to know how I "properly" fix this issue.

Thanks,
Emily