[Chameleon] layer manager

Paul Spencer pspencer at dmsolutions.ca
Fri Oct 15 14:29:14 EDT 2004

There are two ways.  First, there is a form variable that is set when 
you select a layer in this way, SELECTED_LAYERS.  Second, there is 
metadata set on each layer when the page is submitted which you can test 

if( $oLayer->getMetadata( "selected" ) == "1")
     //layer is selected.

Note that this is updated during ParseURL processing so it may not be 
available to your widget in ParseURL unless you set a lower priority 
that the SelectLayers widget or you access it in DrawPublish (or one of 
the GetXXXX functions)



Naijun Zhou wrote:
> Hi,
> I'm adding the layer management buttons (up/down/delete) into the main 
> viewer page instead of launching a new window. When a layer is selected 
> from the radio button in the main page, I hope to catch the selected 
> layer's name in another widget. But I cannot do this.
> I think the radio button is defined in lengend_template.html:
>    <td><input type="radio" name="my_legend" 
> onclick="CWCSelectLayer('[leg_layer_name]', true)"[if name=selected 
> value=1] CHECKED[/if] ></td>
> ...
>    <td><a href="#" 
> onclick="javascript:LegendTemplateLayerInfo('[leg_layer_name]');"><span 
> class="label">[leg_layer_name]</span></a></td>
> How can I get the selected layer name in another php widget? Are there 
> hidden variables I missed?
> Thank you very much!
> N. Zhou
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