[OpenLayers-Users] How to - severable clickable WFS layers ?
Asle Benoni
asle.benoni at gmail.com
Wed Jun 10 07:11:27 EDT 2009
Hello,
I try to specify the layer array like this "map.layers[2,3,4,5]" but that
does not work. Is this correct? I always get popups only on the last layer I
have specified. Is my way of specifying the layers array correct? How do I
check what version of OpenLayers I have?
A lot of questions! Thanks.
/asle
2009/6/8 Asle Benoni <asle.benoni at gmail.com>
> Thanks! Sure enough I was mixing in other layers.
> I chose only the WFS layers now but I am only able to click on the last
> layer that is listed. If I put "map.layers[2,3,4]", I get popups for layer 4
> but no one else.
>
> selectControl = new
> OpenLayers.Control.SelectFeature(map.layers[2,3,4,5],{onSelect:
> onFeatureSelect, onUnselect: onFeatureUnselect});
> map.addControl(selectControl);
> selectControl.activate();
> function onPopupClose(evt) {
> selectControl.unselect(selectedFeature);
> }
>
> I wonder if this is a good approach for what I want to accomplish? I looked
> at this example which uses OpenLayers switch features.
>
> http://gis.ibbeck.de/ginfo/apps/OLExamples/OL26/examples/styles_unique_with_group.html
>
> I would else have to hide a layer when another is shown since users would
> not understand why every marker in all visible layers are not clickable.
>
> Thanks for any input!!
>
> /asle
>
> 2009/6/8 Christopher Schmidt <crschmidt at metacarta.com>
>
> On Mon, Jun 08, 2009 at 03:59:03PM +0200, Asle Benoni wrote:
>> > Hi,
>> > I just wonder how I know if I have OpenLayers 2.8? I have downloaded
>> from
>> > trunk but the date for OpenLayers.js is 31.03.2009. Or do I have to grab
>> > some special files. *map.layers* is my arrayname?
>> >
>> > I tried your suggestion but when I write:
>> > selectControl = new
>> OpenLayers.Control.SelectFeature(*map.layers*,{onSelect:
>> > onFeatureSelect, onUnselect: onFeatureUnselect});
>> > map.addControl(selectControl);
>> > selectControl.activate();
>> > function onPopupClose(evt) {
>> > selectControl.unselect(selectedFeature);
>> > }
>> > I get this error in Firebug and the page is blank:
>> > *layer.renderer is undefined
>> > *
>> > Does this mean I am still using too old OpenLayers.js?
>>
>> No. It means you have passed in one or more layers in your array that
>> are *not* vector layers.
>>
>> -- Chris
>>
>> > /asle
>> > 2009/6/8 Eric Lemoine <eric.lemoine at camptocamp.com>
>> >
>> > > On Sunday, June 7, 2009, Asle Benoni <asle.benoni at gmail.com> wrote:
>> > > > Hello,
>> > > > I have a map using a MapFish framework but I think this must be a
>> > > OpenLayers question.
>> > > > I have several WFS layers from GeoServer where I use the attributes
>> to
>> > > fill the popup. Only problem is that I can only click on markers in
>> one
>> > > layer at a time. The user sees all the layers, some buildings, another
>> layer
>> > > with churches etc. but can only click on on layer. How do I solve
>> this? I
>> > > have now one layer for each type of buildings and I want to be able to
>> turn
>> > > on and off different buildings so that is why they are in separate
>> layers.
>> > > Is it possible to still use many layers and bee able to click on
>> popups from
>> > > different layers. Or is my approach unnecessary difficult? Glad for
>> any
>> > > help!
>> > > >
>> > > > I use this for the WFS layer:
>> > > >
>> > > > createWfsLayer(
>> > > > "Teknisk industri",
>> > > > "
>> > >
>> http://naturkart.no:8080/geoserver/wfs?SERVICE=WFS&VERSION=1.0.0&REQUEST=GetFeature&SRS=EPSG%3A32633&BBOX=40484.8125,6401353.125,760135.8125,6687724.125
>> ",
>> > > {
>> > > > typename:
>> "kulturminner_ns:tekniskindustrielt",
>> > > > srsName: "EPSG:32633",
>> > > > maxfeatures: 200},{
>> > > > extractAttributes:true,
>> > > > visibility:false
>> > > > }
>> > > > );
>> > > >
>> > > > ...same code for each layer....
>> > > >
>> > > > // Popup code, define for each layer with markers:
>> > > > selectControl = new
>> > > OpenLayers.Control.SelectFeature(map.layers[0],{onSelect:
>> onFeatureSelect,
>> > > onUnselect: onFeatureUnselect});
>> > > > map.addControl(selectControl);
>> > > > selectControl.activate();
>> > > > function onPopupClose(evt) {
>> > > > selectControl1.unselect(selectedFeature);
>> > > > }
>> > > > selectControl1 = new
>> > > OpenLayers.Control.SelectFeature(map.layers[1],{onSelect:
>> onFeatureSelect,
>> > > onUnselect: onFeatureUnselect});
>> > > > map.addControl(selectControl1);
>> > > > selectControl1.activate();
>> > > > function onPopupClose(evt) {
>> > > > selectControl1.unselect(selectedFeature);
>> > > > }
>> > > > // etc...... for every layer with marker
>> > >
>> > > Instead of creating one select control for each layer create only one
>> > > and give it all the layers:
>> > >
>> > > sc = new OpenLayers.Control.SelectFeature(array_of_layers, {...});
>> > >
>> > > you'll need OL 2.8 for this (or trunk)
>> > >
>> > > Cheers,
>> > >
>> > >
>> > > > // Now the popup functions used:
>> > > >
>> > > > function onFeatureSelect(feature) {
>> > > > selectedFeature = feature;
>> > > > popup = new OpenLayers.Popup.FramedCloud("chicken",
>> > > >
>> > > feature.geometry.getBounds().getCenterLonLat(),
>> > > > new OpenLayers.Size(100,200),
>> > > > "<h2>" +feature.attributes.gardsnavn +
>> > > > "</h2>Type: "+ feature.attributes.art +
>> > > > "<br />Kommune: "+ feature.attributes.komm +
>> > > > "<br />Beskrivelse<br /><a href='" +
>> > > feature.attributes.urltilpdfark +
>> > > > "' target=blank><img src='
>> > > http://naturkart.no:8080/geoserver/images/logo.png' border='0'
>> > > alt='naturkart'></a>", null, true, onPopupClose);
>> > > > feature.popup = popup;
>> > > > map.addPopup(popup);
>> > > > }
>> > > > function onFeatureUnselect(feature) {
>> > > > map.removePopup(feature.popup);
>> > > > feature.popup.destroy();
>> > > > feature.popup = null;
>> > > > }
>> > > >
>> > > >
>> > > >
>> > >
>> > > --
>> > > Eric Lemoine
>> > >
>> > > Camptocamp France SAS
>> > > Savoie Technolac, BP 352
>> > > 73377 Le Bourget du Lac, Cedex
>> > >
>> > > Tel : 00 33 4 79 44 44 96
>> > > Mail : eric.lemoine at camptocamp.com
>> > > http://www.camptocamp.com
>> > >
>>
>> > _______________________________________________
>> > Users mailing list
>> > Users at openlayers.org
>> > http://openlayers.org/mailman/listinfo/users
>>
>>
>> --
>> Christopher Schmidt
>> MetaCarta
>>
>
>
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