[OpenLayers-Dev] approach question...

[Bart van den Eijnden (OSGIS)]

John,

you can just use a Control and then on activate register for the click
event:

OpenLayers.Control.FeatureInfo = OpenLayers.Class(OpenLayers.Control, {

activate: function() {
  this.map.events.register("click", this, this.click);
  return OpenLayers.Control.prototype.activate.apply(this,arguments);
    },

    click: function (evt) {
      // do your stuff here
},
CLASS_NAME: "OpenLayers.Control.FeatureInfo"
}

Best regards,
Bart

--
Bart van den Eijnden
OSGIS, Open Source GIS
http://www.osgis.nl


--------- Oorspronkelijk bericht --------
Van: John Cole <john.cole at uai.com>
Naar: dev at openlayers.org <dev at openlayers.org>
Onderwerp: [OpenLayers-Dev] approach question...
Datum: 14/11/07 13:10

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> I really like the changes made in 2.5, and I’m trying
> to modify some of my objects to follow the styles and practices in 2.5,
but the
> examples haven’t quite caught up to the edge J
> 
> &nbsp;
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> What I’m trying to do is create a control that can be
> added to a panel (acting as a toolbar) that allows me to set a callback
> function that will return the map coordinates off of a click on the map.
> 
> &nbsp;
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> I’ve gathered that I need a control that needs to
> consume a handler that handles the click event, but I can’t find any
> examples of just returning the mouse click in map coordinates.  Lots of
partial
> examples (get-feature-info is how we are doing it, but I want to do it in
a
> control), The drawing controls are close, but they seem to magically
handle all
> of their stuff, again leaving no example.
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> &nbsp;
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> Could one of the handler guru’s write up or point me
> to a generic call back control howto or example?
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> Many thanks,
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> 
> John
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