Hi,
If you used an OpenLayers.Layer.ModifyFeature control, the according
OpenLayers.Layer.Vector events would be fired upon modification. See
this example while having your browser console opened, you'll see the
events being fired :
http://openlayers.org/dev/examples/modify-feature.html
Those events are fired by a controls (only the ModifyFeature and
Split, actually), but are held inside the Vector layer object itself.
Some others are inside the control itself and also fired by the control
(TransformFeature).
Try to look at the ModifyFeature control and see if it could be the
main widget controling your annotation modifications/selections. I'd
try using it in a custom Control class with an inner ModifyFeature
control for that purpose and do the rest manually (program the rest).
That way, even though you'd need to write some code, it would be done
properly.
HTH,
Alexandre,
On 12-11-21 06:16 AM, Dimitrios Sferopoulos wrote:
Hi all,
I'm trying to implement an undo-redo functionality for openlayers
annotations. Unfortunately openlayers is a bit inconsistent with
raising events, for example moving a feature does not raise any event
whatsoever. Also changing the style of a feature is not firing any
event neither.
I don't want to go through the pain of adding listeners to every
individual button on my annotations toolbar that does not fire an
openlayers event as that would be rather messy.
What would be the way to go with this? Is it possible to extend
openlayers to for example raise an event when a feature is moved?
Cheers
Dimitrios
--
Alexandre Dubé
Mapgears
www.mapgears.com
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