On Thursday, August 20, 2009, Eric Lemoine <[email protected]> wrote:
> On Wednesday, August 19, 2009, Michael Anderson <[email protected]> wrote:
>> Eric is correct. The modifyFeature control is using the select style.
>> Setting the select style's label to an empty string does remove the label on
>> the polygon feature being edited. But the vertices are still labeled. So it
>> is still trying to label the vertices with an attribute value (from the
>> default style?) and putting the empty string from the select style on the
>> polygon.
>
> Right. This is because the modify feature control uses the "default"
> render intent for drawing the vertices (and the rotation and drag
> handles).
>
>
>>
>> Gives me an idea for a temporary hack though. I have a function that finds
>> vertices. I can modify it to add the label attribute to the vertices and set
>> them to empty strings. That should let me label the polygon while the
>> vertices appear to not have labels. Should work as long as adding attributes
>> to a vertex won't cause a problem I don't know about.
>
> How about using a context, with something like that in your style map:
>
> "default": new OpenLayers.Style({
> label: "${label}",
> // other symbolizer properties here
> }, {
> context: {
> label: function(f) {
> if(f.geometry.CLASS_NAME !=
> "OpenLayers.Geometry.Point") {
> return f.attributes.label;
> } else {
> return "";
> }
> }
> }
> })
>
even better: have the context function check if the label attribute exists:
context: {
label: function(f) {
return f.attributes.label != undefined ? f.attributes.label : "";
}
}
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