Hi Eric,
Maybe I am misunderstanding the use of the control entirely.. I got this code
from a previous example and the way I am using the control is -
Declare it like so
//Define Hotspot Control
var info_hotspots = new OpenLayers.Control.WMSGetFeatureInfo({
url: 'http://localhost/WebServices/Request.aspx',
title: 'hotspots',
queryVisible: false,
infoFormat: 'text/xml',
layers: [layer_Parcels_Hotspot],
maxFeatures: 1,
hover:false
});
info_hotspots.handler.delay = 1;
And then I have a giant function to actually process the request and do stuff
that begins like-
info_hotspots.events.on({
getfeatureinfo: function(e) {
//do stuff here
};
Well I have many different themes that the user switches maps to and so I need
the control to use different layers and output different things so I was
modifying the info_hotspots.events.on by basically redeclaring it.. However
this was not working I don't think. So do I just unregister the event first and
then make a new one again so the new one will only fire?
-----Original Message-----
From: Eric Lemoine [mailto:[email protected]]
Sent: January 23, 2011 6:35 AM
To: Andrew Stewart
Cc: [email protected]
Subject: Re: [OpenLayers-Users] Unregistering an event for wmsgetfeatureinfo?
On Sat, Jan 22, 2011 at 4:36 AM, Planet)x <[email protected]> wrote:
>
> I have a GetFeatureInfo control which I declare then in myfeature.events.on I
> code the event. My question is I am trying to use this same control again
> but with a different layer this time so I modify the events.on by redefining
> it.. however it is still firing the first events.on. So do I have to
> unregister the first event.. and if so how to do that.. is it simply
> following the events object listed here -
> http://dev.openlayers.org/docs/files/OpenLayers/Events-js.html
> and using myfeature.unregister(myfeature.events.on) .. or how ? Appreciate
> any assistance.
I'm not sure I understand your issue, if you can unregister listeners using
control.events.un({"eventname": callback_reference});
For example:
function cb() {};
control.events.on({"eventname": cb});
control.events.un({"eventname": cb});
You need to keep references on callbacks you want to eventually unregister.
--
Eric Lemoine
Camptocamp France SAS
Savoie Technolac, BP 352
73377 Le Bourget du Lac, Cedex
Tel : 00 33 4 79 44 44 96
Mail : [email protected]
http://www.camptocamp.com
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