[mapguide-users] Adding/removing temporary layers from session repository

Kenneth, GEOGRAF A/S ks at geograf.dk
Mon Apr 28 14:10:52 EDT 2008

The legend builder tries to minimize the use of "full rebuild" thus, if 
you do not create a new "runtime map layer", but reuse the existing, the 
layer GUID has not changed, and the legend will not refresh.
You might consider adding some extra dummy parameter to the image url to 
prevent browser cache problems.
I hope that helps.

Regards, Kenneth, GEOGRAF A/S

J Manafi skrev:
> We are trying to allow users to define temporary, session layers with 
> custom symbols as icons. They are able to add layers to the map, where 
> we create the LayerDefinitions and store them in the repository. We 
> now want to allow them to remove layers from the map. To do that, I 
> have setup a script that deletes the FeatureSource from the repository 
> and then deletes the LayerDefinition too. Everything seems to work; 
> however, when we try to redefine a layer with the same name but 
> different symbols, the map displays the update correctly but the 
> legend shows the originally defined symbol as the layer icon.
> But, in FireBug, when I inspect the html for generating the legend 
> layer icon, it shows the updated symbol information as the image. We 
> are performing mapFrame refreshes, and manually refreshing the legend 
> makes no difference for the icon.
> Is there something that I am forgetting to do in the process in order 
> to be able to remove and then redefine a LayerDefinition in the 
> session repository with a different symbol set?
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