[mapguide-users] Adding a temporary Layer in MapGuide

[Carmelo Saffioti]

Thank you for your reply Kenneth.
Trying examples on DevGuideSamples I discovered how to work with the Task 
Pane...

Now I need to draw dynamically on the map points of known x,y coordinates, 
after clicking on the appropriate Task item. I hope this can be done with 
the buffer script you suggested me. Isn't it?


Cheers
Carmelo


----- Original Message ----- 
From: "Kenneth Skovhede, GEOGRAF A/S" <ks at geograf.dk>
To: "MapGuide Users Mail List" <mapguide-users at lists.osgeo.org>
Sent: Wednesday, January 21, 2009 9:04 AM
Subject: Re: [mapguide-users] Adding a temporary Layer in MapGuide


>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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