[OpenLayers-Users] Destroy/Delete a vector feature

[Eric Lemoine]

On Tue, Dec 16, 2008 at 11:04 PM, Yves Moisan <yves.moisan at boreal-is.com> wrote:
>
>> The state of features read from your web service is null, isn't it? Do
>> you really need it to be "unknown"?
>
> You are right.  I got it almost working.  If only I could assign a style
> to feature.state = null, I'd be done
>
> var lookup = {};
>           @@ lookup["null"] = {fillColor: "blue"}; @@
>            lookup[OpenLayers.State.UNKNOWN] = {fillColor: "blue"};
>            lookup[OpenLayers.State.UPDATE] = {fillColor: "green"};
>            lookup[OpenLayers.State.DELETE] = {fillColor: "red"};
>            lookup[OpenLayers.State.INSERT] = {fillColor: "orange"};


How about something like that:

 var styleMap = new OpenLayers.StyleMap();
// create a styleMap for the vector layer so that features
// have different styles depending on their state
var context = function(feature) {
    return {
         state: feature.state || OpenLayers.State.UNKNOWN
    };
};
var lookup = {};
lookup[OpenLayers.State.UNKNOWN] = {fillColor: "blue"};
lookup[OpenLayers.State.UPDATE] = {fillColor: "green"};
styleMap.addUniqueValueRules("default", "state", lookup, context);

--
Eric