Re: [OpenLayers-Users] How to call a function that sets attributes for features added by drawfeature-control
Hi Alexandre,
good idea. I´m now assigning an attribute to the feature I´ve added via the
function that is triggered when a feature has been added. It contains a
hexadecimal-color (depending on the colorvalue that is chosen in
dropdown-menu). In the styleMap I define the fillColor as ${fillColor}.
This works perfectly.
Thx for your help
Max Stephan
Alexandre Dube wrote:
Hi Max,
I'm not sure about what could be the best approach. My guess would be
to define a stylemap with your default 'default' and 'select' styles for
newly added features, then when your user choose a color for the
feature, add a rule based on the feature id.
Have you checked : http://trac.openlayers.org/wiki/Styles ? It could
helps to learn more about this.
Also, an example with unique rules :
http://openlayers.org/dev/examples/styles-unique.html
Regards,
Alexandre
Max Stephan wrote:
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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Alexandre Dubé
Mapgears
www.mapgears.com
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[OpenLayers-Users] How to call a function that sets attributes for features added by drawfeature-control
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
--
View this message in context:
http://n2.nabble.com/How-to-call-a-function-that-sets-attributes-for-features-added-by-drawfeature-control-tp3559596p3559596.html
Sent from the OpenLayers Users mailing list archive at Nabble.com.
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Re: [OpenLayers-Users] How to call a function that sets attributes for features added by drawfeature-control
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
___
Users mailing list
Users@openlayers.org
http://openlayers.org/mailman/listinfo/users
Re: [OpenLayers-Users] How to call a function that sets attributes for features added by drawfeature-control
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 mailing list
Users@openlayers.org
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View this message in context:
http://n2.nabble.com/How-to-call-a-function-that-sets-attributes-for-features-added-by-drawfeature-control-tp3559596p3560721.html
Sent from the OpenLayers Users mailing list archive at Nabble.com.
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