[mapguide-users] Setting correct Legend checkboxes

[Fredrik Ohlsson]

Hi,

im using the linktoview widget for showing different layergroups. The
linktoview widget produces url's with parameter for groups to show, called
SHOWGROUPS='Cities'

The maps then shows my layergroup correctly,
only problem is the checkbox in the legend for layergroup 'Cities' doesn't
get checked.

Im trying to fix this with javascript:

var mapWidget = Fusion.getWidgetById('MainMap');
var Maps = mapWidget.getAllMaps();

Maps[0].layerRoot.groups[2].groups[7].legend.treeItem.checkbox.checked = true;


The code is working when executed via button in toolbar, but I want
the code executed when loading the page and this will not work,
errormessage: "WARNING: Exception occurred in AJAX callback.Message:
Cannot read property 'treeItem' of undefined Location: undefined
(undefined)"


Im guessing it has something to do with the Legend hasn't finished
loading and i have to trigger some event when the legend has finished
load?

Am I missing something, or do I have to add my own event in legend.js
when the legend has loaded or is there some other event i could use??

Am i missing something else?
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