MapEvent Constant Field Values

CarlosColón-Maldonado

Greetings,

While there appears to be no difference between APIs, this question refers to the 10.1.1 version. I notice that there are eight constant integer field variables contained in the MapEvent object as follows: MAPEVENT_FIRST, MAPEVENT_READY, MAPEVENT_EXTENT_CHANGED, MAPEVENT_ALLLAYERSREMOVED, MAPEVENT_PAN_ENDED, MAPEVENT_ZOOM_COMPLETED, MAPEXTENT_LAST, and MAPEVENT_DISPOSE.

I also notice that the getID() method is inherited from the AWTEvent super class, and that, while debugging, the MapEvent object does not appear to contain an integer, other than the inherited, that would identify the type of MapEvent it's suppose to be.

I'd like to know how can I determine what action was taken to change the extent of the map that would coincide with these values, if that's what they're suppose to be used for. I've tried the below code and all I get is MAPEVENT_EXTENT_CHANGED as the matching event, likely because the AWTEvent Id is not set with these values:

            @Override             public void mapExtentChanged(MapEvent event) {                 if (event.getID() == MapEvent.MAPEVENT_PAN_ENDED) {                     System.out.println("MAPEVENT_PAN_ENDED: " + event.getID());                 } else if (event.getID() == MapEvent.MAPEVENT_FIRST) {                     System.out.println("MAPEVENT_FIRST: " + event.getID());                 } else if (event.getID() == MapEvent.MAPEVENT_PAN_ENDED) {                     System.out.println("MAPEVENT_PAN_ENDED: " + event.getID());                 } else if (event.getID() == MapEvent.MAPEXTENT_LAST) {                     System.out.println("MAPEXTENT_LAST: " + event.getID());                 } else if (event.getID() == MapEvent.MAPEVENT_ZOOM_COMPLETED) {                     System.out.println("MAPEVENT_ZOOM_COMPLETED: " + event.getID());                 } else if (event.getID() == MapEvent.MAPEVENT_EXTENT_CHANGED) {                     System.out.println("MAPEVENT_EXTENT_CHANGED: " + event.getID());                 }             }

Best practices for this functionality would be very helpful and appreciated.

Thanks in advanced.

ColinAnderson1

Only MAPEVENT_READY, MAPEVENT_EXTENT_CHANGED and MAPEVENT_DISPOSE are used. The other values are no longer used. These three correspond to the MapEventListener interface mapReady, mapExtentChanged and mapDispose. Since you handle specific events through this interface the event IDs are not of much use e.g. if you handle mapExtentChanged then it would have the ID of MAPEVENT_EXTENT_CHANGED.

Hopefully the unused IDs can be removed in the next release.