Feature Info widget defects

[jng]

From Gordon:

Modify the the featureinfo.php widget to only show layers that are both selectable and visible in the legend.

if(($layer->IsVisible?()) && $layer->GetSelectable?()) { $layerName[$layer->GetName?()] = $layer->GetLegendLabel?(); }

Around line 53 in /fusion/widgets/featureinfo/classes/featureinfo.php

Ideally also, this list of layers should update itself as the map scale changes.

Secondly, when display_errors = On in php.ini attempting to do a selection will fail because due to a PHP notice on the server side:

PHP Notice:  Undefined variable: _SESSION in C:\Workspace\fusion-trunk\layers\MapGuide\php\Utilities.php on line 793

[jng]

Fixed r2543. We won't make the layer list auto-refresh as Fusion does not expose a map scale changed event that we could hook onto. The user can always re-invoke the widget to get the current list.