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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hello forum,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am very new to open layers, so my question is hopefully
obvious to others on the forum. I am using openLayers via GWT, with the GWT
open layers library, and GeoServer on the backend.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I was trying to develop some functionality where a user
could save her current map position, and when I recreated the map viewer
component on the page I could start with the map position of this user as a
preference. One of my goals was to save their zoom level along with a bounding
box for their map center. I specifically use Map.zoomTo(int) function, but in
some cases I get a null exception:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>2009-10-21 16:08:33,607 [ERROR] Uncaught exception:
com.google.gwt.core.client.JavaScriptException: (TypeError): element is null
fileName: http://localhost:8080/wx-sample/OpenLayers.js lineNumber: 512 stack:
("OpenLayersDiv113")@http://localhost:8080/wx-sample/OpenLayers.js:512
()@http://localhost:8080/wx-sample/OpenLayers.js:871
(6,5)@http://localhost:8080/wx-sample/OpenLayers.js:1278 ([object
Object])@http://localhost:8080/wx-sample/OpenLayers.js:1272 ([object Object],true,(void
0))@http://localhost:8080/wx-sample/OpenLayers.js:1264 (null,9,[object
Object])@http://localhost:8080/wx-sample/OpenLayers.js:833
(null,9)@http://localhost:8080/wx-sample/OpenLayers.js:816
(9)@http://localhost:8080/wx-sample/OpenLayers.js:852 $setMapCenter_0([object
Object],[object
Object],9)@http://localhost:8080/wx-sample/EFF25A1D94537E851EFC97B149E82FBE.cache.html:20414
$setMapCenter([object
Object],"26.474735017582,60.399004250003","9")@http://localhost:8080/wx-sample/EFF25A1D94537E851EFC97B149E82FBE.cache.html:20109
$applyUserProperties([object Object],[object
Object])@http://localhost:8080/wx-sample/EFF25A1D94537E851EFC97B149E82FBE.cache.html:19974<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>In the case above, I am passing in the int of 9. I’ve
also tried a function that will give me a zoom level for a particular extent
(the bounding box I saved off that represents the user’s center), and I
get the same error there as well.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks in advance for any help or advice you can provide,
Michael<o:p></o:p></span></font></p>
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