Changes between Initial Version and Version 1 of CodeSamples/PHP/AddLayerToInitialMap


Ignore:
Timestamp:
Sep 5, 2008, 1:57:34 AM (16 years ago)
Author:
ksgeograf
Comment:

--

Legend:

Unmodified
Added
Removed
Modified

  • CodeSamples/PHP/AddLayerToInitialMap

    v1 v1  
     1[[PageOutline]]
     2
     3This page is one of the !MapGuide Community CodeSamples.  Visit the CodeSamples page to view more!
     4
     5== Dynamically adding a layer to the initial map ==
     6The following script shows how to create a temporary !MapDefinition and insert a layer that is visible when the map loads.
     7It can also be modified to toggle a layers initial visibility.
     8
     9== Things to note ==
     10 - The code assumes that you have already established a session
     11 - The code can easily be used together with [wiki:CodeSamples/PHP/InitialMapView setting an intial map view]
     12 - $mdResourceId is the full resource id for the !MapDefinition to use
     13 - $rlLayerResourceId is the full resource id for the !LayerDefintion to use
     14 - $layerName is the name of the layer to insert
     15
     16== The code ==
     17{{{
     18#!php
     19<?php
     20
     21//
     22// Vital includes.
     23//
     24$viewerDir = "mapviewerphp\\";
     25include $viewerDir . "constants.php";
     26include $viewerDir . "common.php";
     27
     28// Build a string pointing to the new layer in the Session
     29$rlLayerResourceId = "Session:$sessionId//$layerName.LayerDefinition";
     30
     31// Read the XML of the Library Map Definition
     32$mdReader = $resourceService->GetResourceContent($mdResourceId);
     33$mdXml = $mdReader->ToString();
     34$mdDomDoc = DOMDocument::loadXML($mdXml);
     35
     36// Create the MapLayer XML nodeset in the first position
     37$targetNode = $mdDomDoc->getElementsByTagName("MapLayer")->item(0);
     38$newNode = $targetNode->parentNode->insertBefore(new DOMElement("MapLayer"),
     39$targetNode);
     40$newNode->appendChild($mdDomDoc->createElement("Name", $layerName));
     41$newNode->appendChild($mdDomDoc->createElement("ResourceId",
     42$rlLayerResourceId));
     43$newNode->appendChild($mdDomDoc->createElement("Selectable", "false"));
     44$newNode->appendChild($mdDomDoc->createElement("ShowInLegend", "false"));
     45$newNode->appendChild($mdDomDoc->createElement("LegendLabel"));
     46$newNode->appendChild($mdDomDoc->createElement("ExpandInLegend", "false"));
     47$newNode->appendChild($mdDomDoc->createElement("Visible", "true"));
     48$newNode->appendChild($mdDomDoc->createElement("Group"));
     49
     50// Write the XML out to form the Session Map Definition
     51$mdUpdatedXml = $mdDomDoc->saveXML();
     52?>
     53}}}
     54
     55
     56== See also ==
     57[wiki:CodeSamples/PHP/InitialMapView Setting an intial map view]
     58
     59