This is a bit tricky, as the wms server sends a response independent of wether
it found any features or not.
A simple solution could be to check the response text for a string you know is
only present if there are indeed results. (ie. geoserver adds
<table class="featureInfo"> if there are results). This can be done with
someting like:
info = new OpenLayers.Control.WMSGetFeatureInfo({
url: 'http://webgis.24gis.pl/geoserver/wms',
title: 'Identify features by clicking',
queryVisible: true,
infoFormat: 'text/html',
maxFeatures: 1,
eventListeners: {
getfeatureinfo: function(event) {
if (event.text.indexOf("<table
class=\"featureInfo\">") != -1){
popup = new
OpenLayers.Popup.FramedCloud(
"chicken",
map.getLonLatFromPixel(event.xy),
null,
event.text,
null,
true
), {
autoSize: false,
maxSize: new
OpenLayers.Size(5,5)
};
map.addPopup(popup);
}
}
}
});
map.addControl(info);
On 2011-08-03 13:22, michsred wrote:
Hi list,
is it possible to construct GetFeatureInfo machanism with popup which
will
be active only on objects (points, lines, polygons) from WMS layers. I
already have popups working on my whole map. When I click outside of
object
e.g polygon the opened popup is empty. I would like to have popups which
apear only on objects (or more precisely, only on places where
GetFeatureInfo information is present).
This is GetFeatureInfo code which I use:
info = new OpenLayers.Control.WMSGetFeatureInfo({
url: 'http://webgis.24gis.pl/geoserver/wms',
title: 'Identify features by clicking',
queryVisible: true,
infoFormat: 'text/html',
maxFeatures: 1,
eventListeners: {
getfeatureinfo: function(event) {
popup = new
OpenLayers.Popup.FramedCloud(
"chicken",
map.getLonLatFromPixel(event.xy),
null,
event.text,
null,
true
), {
autoSize: false,
maxSize: new
OpenLayers.Size(5,5)
};
map.addPopup(popup);
}
}
});
map.addControl(info);
Thank you in advance for any sugestion!
Michal
--
View this message in context:
http://osgeo-org.1803224.n2.nabble.com/Popup-only-on-WMS-layer-object-tp6648352p6648352.html
Sent from the OpenLayers Users mailing list archive at Nabble.com.
_______________________________________________
Users mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/openlayers-users
--
Atle Frenvik Sveen
Utvikler
Geomatikk IKT AS
tlf: 45 27 86 89
[email protected]
_______________________________________________
Users mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/openlayers-users
