[OpenLayers-Users] How to call a function that sets attributes for features added by drawfeature-control

[Max Stephan]

Hi Alexandre,

I got it working now. The Problem was that in the function that was
triggered by the featureadded-event I tried something like feature.id and
not evt.feature.id.
I registered the event via
"drawFeatureControlName.events.register("featureadded", ' ' , function)".

But, as always, one problem solved and another one evolves. As said before I
want to apply a user-customizable style to each feature added. I´ve done
this for example via "evt.feature.style = {fillcolor: "#FF9933",
pointRadius: 10, strokeColor: 'black'}" and after that I´m redrawing the
feature via "vectorLayer.drawFeature(evt.feature)". This works and the point
is symbolized in the planned way. But when I select one of those points on
the map the radius shrinks (I guess to the size of the default-style for
point-Vectorfeatures) and the stroke is gone. Even when I unselect the
feature it stays in this changed style. Now I tried to apply a stylemap with
default- and selectStyle to the feature but that didn´t have any effect (the
points stayed in their default-orange-style).

Any idea how to solve this problem? Rulebased styling via a layerwide
stylemap is no option cause as said above the user should be able to choose
color etc. independently.

Greets and thx for your help
Max Stephan

Alexandre Dube wrote:
> 
> Hi Max,
> 
>   Here's an old demo that could help you for some of your needs :
> 
>   http://dev4.mapgears.com/bdga/bdgaWFS-T.html
> 
>   Simply click on a feature.  This demonstrate a way to edit feature's 
> attributes in a form.  If your data is stored in a DB, you don't need to 
> take care of the id manually.  The DB will automatically generate one.
> 
>   The example is using WFS-T to TinyOWS connected to a PostGIS DB.
> 
> Best of luck,
> 
> Alexandre
> 
> Max Stephan wrote:
>> Hi list,
>>
>> I´m actually implementing a drawfeature-control for my web-GIS.
>> Everything´s
>> working fine so far but now I want to add a little more functionality:
>> - the user should be able to specify the appearance of the features he´s
>> adding. This shall only have an effect on the features he´s adding after
>> specifying the style (so a change of the general vectorlayer-Style is not
>> useful)
>> - each feature should get a unique ID whose format I´d like to specify
>> and
>> which is generated by a script-wide counter for example
>>
>> For both of this cases I thought of the event featureadded. But I´m
>> having
>> some trouble with it. Here´s what I tried:
>>
>> 1. event-listener on the layer to which the features are added:
>>
>> example: vectorLayer.events.register('featureadded', vectorlayer,
>> testFunction);
>>
>> 2. event-listener on the handler for drawfeature-control (same as above
>> but
>> with vectorLayer being replaced by the drawfeature-control)
>>
>> 3. event-listener in this form:
>>
>> vectorLayer.events.on("featureadded": testFunction, ...);
>>
>> The testFunction is meant to specify the attributes like style, id etc.
>> on
>> the feature that was added. The function is executed (tested it with an
>> alert).
>>
>> The problem is that it´s not possible to select features on this layer
>> (the
>> other vectorlayers are still working) when using the
>> featureadded-listener.
>> But I need to be able to select features to modify it´s attributes later
>> on
>> or to clear them via a form.
>>
>> I also thought of using the create-callback of the point-handler but
>> don´t
>> know how to implement it.
>>
>> Any ideas and help is appreciated.
>> Thx in advance
>> Max Stephan
>>   
> 
> 
> -- 
> Alexandre Dubé
> Mapgears
> www.mapgears.com
> 
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> Users at openlayers.org
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> 
> 

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