[Gwt-openlayers-users] Event Model

[David P. <dav...@pi...>]

Hi

I trying to understand the event model used in gwt-openlayers

As far as I understand it, there are two event models.

The one based on openlayers register event, etc.

The the model employed in gwt-openlayers, eg addMapClickListener from
Map.java.

They are both based on the same code model, but I have an issue with the
openlayers one.

I have written a wrapper for the OpenLayers.Protocol.HTTP function.  Its
it provides several callback interfaces.  In my wrapped version I support
both the use of the callback paramter and an addProtocol style function.

As I expected when ever I accessed a file the callback function for the
success event fired.

BUT my callback function installed by the gwt-openlayers function fired
whenever a file protocol event fired, ie when ever openlayer opens a file
my protocol specfic callback function was called, instead of only being
called when my protocol wrapper was active.

It seems that anycallback function installed by an openlayers Listener
function are global,ie  not tied to a specfic instance off an object.  Is
this the expect results or should objects only get events that they
created?

The only reason thatI ask is that I want to wrap some of the
Handler(Hover,Box, MouseWheel, etc)  objects which have an extensive
system off callbacks functions and I want to get the right interface.

Dave
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