[OpenLayers-Users] inconsistent click handling

[bartvde at osgis.nl]

Hi,

my first guess would be the clickTolerance, try setting it to a larger
value (defaults to 4).

There is only an ugly prototype way to set it right now, but please give
it a try:

OpenLayers.Handler.Feature.prototype.clickTolerance = 6;

Best regards,
Bart

> Hello list,
>
> I'm having a persistent problem, which is not very consistently
> reproducible.
>
> I have a small application with a button, which when beeing clicked,
> places a marker
> on a map. The marker can be moved.
> When double clicked, the marker dis-appears and a popup-window is shown.
> In 50% (a guestimate) of the 'double-clicks' there is no reaction at al
>
> This page is as clean as I can create the example:
> http://ligplekwijzer.steckelfisch.nl/feature-not-responding-test1.html
>
> This code creates the layer:
> function addNewLigplekLayer() {
>   var SHADOW_Z_INDEX = 10;
>   var MARKER_Z_INDEX = 11;
>
>   try {
> 	newLigplekLayer = new OpenLayers.Layer.Vector( "Aanmelden nieuwe
> ligplek",
> 		{
> 		    styleMap: new OpenLayers.StyleMap({
> 			externalGraphic: "/ligplekwijzer_files/img/Cross.png",
> 			backgroundXOffset: 0,
> 			backgroundYOffset: -7,
> 			graphicZIndex: MARKER_Z_INDEX,
> 			backgroundGraphicZIndex: SHADOW_Z_INDEX,
> 			pointRadius: 15
> 		    }),
> 		    isBaseLayer: false,
> 		    displayInLayerSwitcher: false
> 		}
> 	);
>
> 	// Toevoegen drag feature control voor het verslepen van een feature
> 	var dragFeature = new OpenLayers.Control.DragFeature(newLigplekLayer);
> 	map.addControl( dragFeature );
> 	dragFeature.activate();
>
> 	var newLigplekControlOptions = {   onSelect: onNieuweLigplekSelect,
>  		                            onUnselect: onNieuweLigplekUnselect };
>
> 	newLigplekControl = new OpenLayers.Control.SelectFeature(newLigplekLayer,
> 		                                                    newLigplekControlOptions)
> ;
> 	map.addControl( newLigplekControl );
> 	newLigplekControl.activate();
>
> 	map.addLayers([newLigplekLayer]);
> 	newLigplekLayer.setVisibility( true, true);
>   } catch(e) {
>     alert("Opbouwen van de data-laag AanmeldenNieuweLigplek is verkeerd
> gegeaan. " + e.name + ". Error message: " + e.message);
>   }
>
> }
>
>
>
> this is the code that adds the marker to the layer:
>
> function addNewLigplekFeature() {
>     //alert("addNewLigplekFeature");
>     try {
> 	if( newLigplekLayer != null) {
> 		try {
>                    newLigplekLayer.destroyFeatures(newLigplekLayer.features);
>                 }
>                 catch( err) {
> 	           //ignore.
> 	           alert(err);
> 	        }
>
> 		var features = [];
> 		var center = map.getViewPortPxFromLonLat(map.getCenter());
> 		var pixel = new OpenLayers.Pixel(center.x, center.y);
> 	        var lonLat = map.getLonLatFromViewPortPx(pixel);
> 		features.push(
> 			    new OpenLayers.Feature.Vector(
> 			        new OpenLayers.Geometry.Point(lonLat.lon, lonLat.lat)
> 			    )
> 		);
>
> 		newLigplekLayer.addFeatures(features);
> 		newLigplekLayer.setVisibility( true, true);
> 	}
>     }
>     catch( err) {
> 	alert( "Error in addNewLigplekFeature: "+err );
>     }
> }
>
>
> I hope someone can provide me a handle or a pointer to solve this issue.
>
> Regards,
> Gert-Jan Braas
>
> ====================
> Scholen dienen methodes te onderwijzen,
> niet het gebruik van Microsoft producten.
>
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