[mapguide-users] Adding a temporary Layer in MapGuide

[Kenneth Skovhede, GEOGRAF A/S]

I have not used the AJAX viewer enough to know how to do this with tasks.
The values can be read from the viewer through some property functions:

http://mapguide.osgeo.org/files/mapguide/docs/2.0/viewerapi.html#mapframe_getsessionid
http://mapguide.osgeo.org/files/mapguide/docs/2.0/viewerapi.html#mapframe_getmapname

With those, you can manually pass them to the request, if you use the 
"InvokeScript" method,
but there may be an easier way.

Regards, Kenneth Skovhede, GEOGRAF A/S



Carmelo Saffioti skrev:
> Thank you for your help!
> I'm seeing that the code you posted is very similar to the buffer 
> code, however I'm really new to MapGuide, so I hope you can help me 
> understanding how to make it work.
>
> I created a Layout, using MapGuide Studio, on which I added a new 
> custom command for the Task panel, named "Route tracing". Therefore I 
> created the route_tracing.jsp file, on which I'm trying to use your 
> code (translating it from PHP to JSP) or the buffer.jsp code (which is 
> already in JSP).
>
> On both your code and buffer.jsp there is this code:
> mapName = GetParameter(request, "MAPNAME");
> sessionId = GetParameter(request, "SESSION");
>
> - The question is: how can I pass the MAPNAME and SESSION values to 
> the web page?
>
> The final result should be a web page, which opens when its Action 
> Task item is clicked, on which I can select and digit some options. 
> After clicking a button the page should get these values, and display 
> the map with the calculated additional layer on it.
>
>
>
> I hope you can help me about that
> Cheers
> Carmelo
>
>
>
> ----- Original Message ----- From: "Arnaud De Groof" 
> <Arnaud.DeGroof at spacebel.be>
> To: "MapGuide Users Mail List" <mapguide-users at lists.osgeo.org>
> Sent: Monday, January 12, 2009 4:18 PM
> Subject: RE: [mapguide-users] Adding a temporary Layer in MapGuide
>
>
> The first code :
> <?php
>
> // Vital includes.
>
> include "../../mapviewerphp/constants.php";
>
> include "../../mapviewerphp/common.php";
>
>
>
>
>
> $args = ($_SERVER['REQUEST_METHOD'] == "POST") ? $_POST : $_GET;
>
> $sessionId = $args['SESSION'];
>
> $mapName = $args['MAPNAME'];
>
> $layerName1 = 'YYY';
>
> $rlLayerResourceId = "Library://XXX/$layerName1.LayerDefinition";
>
>
>
> InitializeWebTier();
>
>
>
> $userInfo = new MgUserInformation($sessionId);
>
> $siteConnection = new MgSiteConnection();
>
> $siteConnection->Open($userInfo);
>
> $resourceService =
> $siteConnection->CreateService(MgServiceType::ResourceService);
>
>
>
> // Read the MapDefinition into an XML DOM document object.
>
> $md = " Library://XXX/$mapName.MapDefinition "; // TODO Constant!
>
> $mdResourceId = new MgResourceIdentifier($md);
>
> $mdReader = $resourceService->GetResourceContent($mdResourceId);
>
> $mdXml = $mdReader->ToString();
>
> $mdDomDoc = DOMDocument::loadXML($mdXml);
>
>
>
> // Add a new MapLayer
>
> $targetNode = $mdDomDoc->getElementsByTagName("MapLayer")->item(0);
>
> $newNode = $targetNode->parentNode->insertBefore(new
> DOMElement("MapLayer"), $targetNode);
>
> $newNode->appendChild($mdDomDoc->createElement("Name", $layerName1));
>
> $newNode->appendChild($mdDomDoc->createElement("ResourceId",
> $rlLayerResourceId));
>
> $newNode->appendChild($mdDomDoc->createElement("Selectable", "false"));
>
> $newNode->appendChild($mdDomDoc->createElement("ShowInLegend",
> "false"));
>
> $newNode->appendChild($mdDomDoc->createElement("LegendLabel"));
>
> $newNode->appendChild($mdDomDoc->createElement("ExpandInLegend",
> "false"));
>
> $newNode->appendChild($mdDomDoc->createElement("Visible", "true"));
>
> $newNode->appendChild($mdDomDoc->createElement("Group"));
>
>
>
> // Save the updated MapDefinition
>
> $updatedXml = $mdDomDoc->saveXML();
>
> $byteSource = new MgByteSource($updatedXml, strlen($updatedXml));
>
>
>
> // Create the temporary MapDefinition
>
> $sessionMapName = $mdResourceId->GetName();
>
> $sessionMapDefinition =
> "Session:$sessionId//$sessionMapName.MapDefinition";
>
> $sessionResourceId = new MgResourceIdentifier($sessionMapDefinition);
>
>
>
> // Write the updated MapDefinition
>
> $resourceService->SetResource($sessionResourceId,
> $byteSource->GetReader(), null);
>
>
>
> //Test the updated MapDefinition
>
> $md1 = "Session:$sessionId//X.MapDefinition";
>
> $mdResourceId2 = new MgResourceIdentifier($md1);
>
> $mdReader2 = $resourceService->GetResourceContent($mdResourceId2);
>
> $mdXml2 = $mdReader2->ToString();
>
> $mdDomDoc2 = DOMDocument::loadXML($mdXml2);
>
>
>
>
>
> // Read the WebLayout into an XML DOM document object.
>
> $wl = "Library://XXX/XXX.WebLayout"; // TODO Constant!
>
> $wlResourceId = new MgResourceIdentifier($wl);
>
> $wlReader = $resourceService->GetResourceContent($wlResourceId);
>
> $wlXml = $wlReader->ToString();
>
> $wlDomDoc = DOMDocument::loadXML($wlXml);
>
>
>
> // Now, update the MapDefinition.
>
> $mapdef = $wlDomDoc->getElementsByTagName("ResourceId")->item(0);
>
> $mapdef->nodeValue = "$md1";
>
>
>
> // Prepare the updated XML to be written out to the session.
>
> $wlupdatedXml = $wlDomDoc->saveXML();
>
> $wlbyteSource = new MgByteSource($wlupdatedXml, strlen($wlupdatedXml));
>
>
>
> // Create a temporary WebLayout
>
> $wlsessionMapName = $wlResourceId->GetName();
>
> $wlsessionWebLayout = "Session:$sessionId//$wlsessionMapName.WebLayout";
>
> $wlsessionResourceId = new MgResourceIdentifier($wlsessionWebLayout);
>
>
>
> // Write the updated WebLayout to the session.
>
> $resourceService->SetResource($wlsessionResourceId,
> $wlbyteSource->GetReader(), null);
>
>
>
> // Redirect to the Ajax viewer.
>
> $redirectTo =
> "mapguide/mapviewerajax/?SESSION=$sessionId&WEBLAYOUT=$wlsessionWebLayou
> t";
>
> $host = $_SERVER["HTTP_HOST"];
>
> $url = "http://$host/$redirectTo";
>
>
>
> //Test
>
> $f = 'test.txt';
>
> $handle = fopen($f,"w");
>
> fwrite($handle, "test1:<".$mdXml.">\r\ntest 2 :<".$updatedXml.">\r\ntest
> 3 :<".$wlXml.">\r\ntest 4 :<".$wlupdatedXml.">\r\ntest 5 :<".$url.">");
>
> fclose($handle);
>
>
>
> // Redirect!
>
> header("Location: $url");
>
> exit;
>
>
>
> ?>
>
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