[mapguide-users] RE: Waiting until resources are loaded [No Viruses detected]

[Jackie Ng]

Hi Tom,

There is a client-side js variable (mapInit : bool) deep inside the mapFrame
the says whether a map has been loaded. To my knowledge there is no similar
variable/function/class on the server-side.

So what I did was do a client-side wait on this variable to become true.
Once true then initiate your server-side script through redirect/xmlhttp
request.

Hope that helps.

- Jackie

-----Original Message-----
From: Tom Chadwin [mailto:tom.chadwin at nnpa.org.uk] 
Sent: Tuesday, 19 December 2006 8:14 PM
To: users at mapguide.osgeo.org
Subject: Waiting until resources are loaded [No Viruses detected]

Hello all

I am opening a page in the task pane which queries feature data in the
current session map. However, this page loads quicker than the mapframe.
This means that exceptions are thrown in the task pane.

I have got around via a horrible solution which hammers the server:

try {
	MgInitializeWebTier($configFilePath);
	$userInfo = new MgUserInformation($mgSessionId);
	$siteConnection = new MgSiteConnection();
	$siteConnection->Open($userInfo);
	$resourceService =
$siteConnection->CreateService(MgServiceType::ResourceService);
	$featureService =
$siteConnection->CreateService(MgServiceType::FeatureService);
	$map = new MgMap();
	$map->Open($resourceService, $mapName); } catch (MgException $e) {
	header("Location: nnpa_planning.php?SESSION=" . $mgSessionId .
"&nnpaRef=" . $_GET["nnpaRef"]);
}

In other words, if there is an exception, re-request the page. What is a
better way to do this? I have heard mention of a variable which indicates
whether the map has fully loaded, but is that not in the Web API, and hence
in Javascript, and not available to the server-side script (in my case,
PHP)?

Any help gratefully received.

Tom


Tom Chadwin
ICT & Web Development Officer
Telephone: 01434 611530
Mobile: 
Fax: 01434 611677
Email: tom.chadwin at nnpa.org.uk
Web : www.Northumberland-national-park.org.uk
<http://www.Northumberland-national-park.org.uk>

<http://www.northumberland-national-park.org.uk/> 
 
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