[OpenLayers-Users] possible issue in wfs markers...

[Cicconetti, Bob]

It appears that yesterday the vector callbacks in SVN head stopped
passing geometries, but instead sent features.

Before I'd get, say, OpenLayers.Geometry.Polygon passed in; after
yesterday I'd get OpenLayers.Feature.Vector.

If you need to get at the geometry, use feature.geometry. This isn't on
a public facing server, unfortunately, but I can give some snippets.

For ex:

  var vlayer = new OpenLayers.Layer.Vector("Editable");
  map.addLayer(vlayer);

  // Extend the edit tool bar to allow deleting features, and gather
  // info about them.
  var selectTool = new OpenLayers.Control.SelectFeature(vlayer,  
  	{
	onSelect:feature_info,
	onUnselect:clear_feature_info
	});

[...]

  function feature_info(feature) {
   //Extend to allow string length as well.
      if (feature.geometry.CLASS_NAME == "OpenLayers.Geometry.Polygon")
	{

	var str = feature.geometry.getArea();
	// Assume units are meters, for now.
	// Magic numbers are evil, but ah well.
	var sqft = str / 0.09290304;
	var acres = str / 4046.856422;

	// FIXME: Round and truncate. 8 sig figs?
	if (sqft < 4000)
	 str = "Area: (sq ft.) " + sqft;
	else
	 str = "Area: (acres) " + acres;
	
	document.getElementById('area').innerHTML = str;

	}
      else if (feature.geometry.CLASS_NAME ==
"OpenLayers.Geometry.LineString")
        {
        var str = feature.geometry.getLength();
	var feet = str / 0.3048;
	var miles = str / 1609.344;

	if (feet < 2000)
	 str = "Length: (feet) " + feet;
	else
	 str = "Length: (miles) " + miles;

	document.getElementById('area').innerHTML = str;
        }

  }

[...]

  function deleteFeature(feature) {
	this.unselect(feature);
//  	this.layer.removeFeatures(geometry.feature);
  	this.layer.removeFeatures(feature);
	}



-----Original Message-----
From: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org]
On Behalf Of Christopher Schmidt
Sent: Tuesday, April 10, 2007 7:29 PM
To: Stephen Woodbridge
Cc: openlayers
Subject: Re: [OpenLayers-Users] possible issue in wfs markers...

On Tue, Apr 10, 2007 at 06:59:20PM -0400, Stephen Woodbridge wrote:
> Erik,
> 
> I just updated my copy of trunk, but I seem to have another problem 
> unrelated to John's where the hover over the features is no longer 
> displaying the feature.attributes. I don't know when this broke, but
it 
> was working after the 2.4 merge was integrated into the trunk.
> 
> http://imaptools.com/ld-testv.html
> click the link for Algers, DZ and hovering over any of the orange 
> feature circles should display the attributes on the left side of the
page.

geometry no longer has a feature property. openmnnd demo has been
updated. You probably need something like:

        function feature_info_hover(feature) {
            if (displayedFeature != feature && 
               (!feature.layer.selectedFeatures.length || 
               (feature.layer.selectedFeatures[0] == feature))) {
            feature_info(feature);
            displayedFeature = feature;
           }
        }    
        function feature_info(feature) {
            var html = "<ul>";
            for(var i in feature.attributes)
               html += "<li><b>" + i + "</b>: "+  feature.attributes[i]
+ "</li>";
            html += "</ul>";
            $('feature_info').innerHTML = html;
        }

To do what you were doing before. 

-- Chris
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