[OpenLayers-Users] How to use layer.events.register() and layer.events.on()?

[Christopher Schmidt]

On Wed, May 13, 2009 at 11:28:57AM -0400, Christopher Schmidt wrote:
> On Wed, May 13, 2009 at 11:13:38AM -0400, Stéphane Poirier wrote:
> > Hi All (and Tim),
> > 
> > Catching events using predefined function hook works fine for me (case 2 and 3),
> > but I do not have any success catching events using layer.events.register (case
> > 4) nor layer.events.on (case 5). What do I do wrong? Should
> > layer.events.register and/or layer.events.on be used before the layer is
> > created? And what is the difference between these two?
> > 
> > //1) create layer
> > rectangleLayer=new OpenLayers.Layer.Vector("Selection");
> > 
> > //2) works fine
> > rectangleLayer.preFeatureInsert=function(feature)
> > {
> > 	feature_tobeinserted();
> > }
> > 
> > //3) works fine
> > rectangleLayer.onFeatureInsert=function(feature)
> > {
> > 	feature_inserted();
> > }
> > 
> > //4) does not seem to catch event
> > rectangleLayer.events.register("sketchcomplete",rectangleLayer,
> > 	function(event){ var feature = event.feature;
> > 	return (feature.geometry.getArea() > 10); // false to not add
> > 	});
> 
> The order of arguments in this one is wrong: it should be
> ("sketchcomplete", function(){}). (The rectangleLayer is totally
> unneccesary in the given function.) 

Actually, my memory was playing tricks on me here. My statement is
wrong.

Out of curiousity, are you using OpenLayers 2.8? sketchcomplete doesn't
exist in OpenLayers 2.7.

> > //5) does not seem to catch event
> > rectangleLayer.events.on({
> > 	sketchcomplete: function(event) {
> > 	var feature = event.feature;
> > 	return (feature.geometry.getArea() > 10); // false to not add
> > 	}});
> > 
> > Regards,
> > 
> > 
> > Stéphane Poirier
> > Professionel de recherche au CARTEL
> > Centre d'Applications et de Recherches en Télédétection
> > Département de géomatique appliquée
> > Université de Sherbrooke
> > Sherbrooke (Québec), CANADA J1K 2R1
> > Tel.: (+1 819) 821 8000 #61904
> > Fax.: (+1 819) 821 7944
> > Stephane.Poirier at USherbrooke.ca
> > http://www.usherbrooke.ca/cartel
> > _______________________________________________
> > Users mailing list
> > Users at openlayers.org
> > http://openlayers.org/mailman/listinfo/users
> 
> -- 
> Christopher Schmidt
> MetaCarta
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-- 
Christopher Schmidt
MetaCarta