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<p class=MsoNormal>Hello,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I need to saw an alert when user active a wms layer when a
specific baseLayer is active. With the following code I get twice, but I don’t
undestand why.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> ct1m.events.register(</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#8E00FF'>"visibilitychanged"</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>this</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>function</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>(event)</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>{</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:#7F0055'> </span><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>alert(</span><span style='font-size:
10.0pt;font-family:"Courier New";color:#8E00FF'>"vis: "</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>+ct1m.getVisibility());</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:35.4pt;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>var </span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>capaBase = </span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>this</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>.map.baseLayer.params.LAYERS;</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span style='font-size:
10.0pt;font-family:"Courier New";color:#7F0055'>if</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>(capaBase == </span><span
style='font-size:10.0pt;font-family:"Courier New";color:#8E00FF'>"orto"</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>)</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>{</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:#7F0055'> </span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>ct1m.events.unregister(</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#8E00FF'>"visibilitychanged"</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>this</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>function</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>(event)</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>{</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>alert(</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#8E00FF'>"hello"</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>);</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>}</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>);</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> ct1m.setVisibility(</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>false</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>);</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> alert(</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#8E00FF'>"Layer
not available"</span><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>);</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span style='font-size:
10.0pt;font-family:"Courier New";color:#7F0055'>}else{</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:#7F0055'> </span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>ct1m.events.register(</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#8E00FF'>"moveend"</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>, </span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>this</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>, </span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>function</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>(event)</span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>{</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:#7F0055'> var </span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>res = </span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>this</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>.map.getResolution();</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>if</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>(res == 0.25)
ct1m.setOpacity(1);</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>else </span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>ct1m.setOpacity(0.7);</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span style='font-size:
10.0pt;font-family:"Courier New";color:#7F0055'>}</span><span style='font-size:
10.0pt;font-family:"Courier New";color:black'>);</span><span style='font-size:
10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:35.4pt;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>}</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";
color:#7F0055'>}</span><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>);<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal>The sequence is, Vis: true -> Vis: false -> Layer not
available -> Layer not available <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Any idea?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thank’s in advance.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Antoni
Vidal</span></b><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:gray'>Unitat d'Aplicacions SIG-WEB<br>
<a
href="http://mercuri.icc.cat/website/mob_nf/mob1/mob2/inici2.htm?CONSULTA=Institut%20Cartogr%25E0fic%20de%20Catalunya&XYADDRESS=429486:4580392"><span
style='color:gray'>Institut Cartogrāfic de Catalunya</span></a><br>
Parc de Montjuīc, E-08038 Barcelona<br>
Tel. (+34) 93 567 15 00 (ext. 3228)<br>
<a href="http://www.icc.cat/"><span style='color:blue'>www.icc.cat</span></a></span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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