[OpenLayers-Users] how to initialize 'WFS.fromWMSLayer' with features

[Eric Lemoine]

On Thu, Nov 19, 2009 at 9:42 AM, John Pulles <john.pulles at geodan.nl> wrote:
> Eric Lemoine schreef:
>
> On Wednesday, November 18, 2009, John Pulles <john.pulles at geodan.nl> wrote:
>
>
> Hi list,
>
> Like the example at
> http://openlayers.org/dev/examples/getfeature-wfs.html, I am using the
> OpenLayers.Protocol.WFS.fromWSMLayer convenience function to select
> features from a wms layer and collect the values of a certain attribute.
> When opening the same map a next time, I would like to show which
> features were selected. Now I'm looking for a way to add features to the
> wfs layer based on some attribute values, what would be the easiest way?
>
>
> you can register a "beforefeatureadded" listener on the vector layer,
> something like that:
>
> layer.events.on({
>     beforefeatureadded: function(e) {
>         // only add features whose foo attribute
>         // is set to "bar"
>         return e.feature.attributes.foo == "bar" ?
>              true : false;
>     }
> });
>
>
> Hi Eric,
>
> What I would like is to fill the vector layer at initialization with the
> known features from the associated wfs layer. The beforefeatureadded event
> would still require the user to select features and then only adds the known
> features. But how to fill the vector layer with these features, without any
> action from the user?

I don't get it. beforefeatureadded is triggered for every feature
added to the layer, it has nothing to do with the user selecting
features, hasn't it?


-- 
Eric Lemoine

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