[Geomoose-users] slideshow/tour within GeoMoose

[Brent Fraser]

All,

   If you followed last week's "Layer Functions" thread you know that I used the 
GeoMOOSE API to create a "Zoom To Layer Extents" button on the metadata results 
page.

   Our marketing guy asked if it would be possible to create a "slide-show" or 
"tour" using similar techniques.  At first I thought it would be easy and had 
the php return:

var mapWin = window.opener;
var GeoMOOSE = mapWin.GeoMOOSE;
	
GeoMOOSE.clearPopups();
GeoMOOSE.zoomToExtent(-12711115, 6271185,-12665227, 6309521);
GeoMOOSE.turnLayerOn("Quickbird/Waterton");
GeoMOOSE.addPopup(-12687075, 6290155, 200, 100, "Quickbird Imagery supplied by 
Geoanalytic");		

wait(3000);

GeoMOOSE.clearPopups();
GeoMOOSE.zoomToExtent(-12702314, 6719493,-12696849, 6724881);
GeoMOOSE.turnLayerOn("Parcels/all");
GeoMOOSE.addPopup(-12701359, 6721881, 200, 100, "Parcels supplied by AltaLIS");


only to find out that Javascript has no wait/sleep/pause function, and in fact 
the whole idea is contrary to the async nature of JavaScript.  I did find some 
info at http://www.devcheater.com/ outlining the problem, some solutions and 
their effect on various browsers.  The best approach looks like using XMLHttp 
and server-side scripting to get things to wait, but perhaps there's a better way?

Any thoughts?

Brent Fraser