osmwp.github.com/development_node_Namespace.html at master · osmwp/osmwp.github.com · GitHub

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<!DOCTYPE html
  PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<title>Mobile Widgets</title>
	<link rel="stylesheet" href="style/style.css" />
	<link rel="shortcut icon" href="images/favicon.ico" type="image/x-icon" />
	<script type="text/javascript" src="js/StructureElts.js"></script>
	<script type="text/javascript" src="js/Structure.js"></script>
	<script type="text/javascript" src="js/DocElements.js"></script>
</head>

<body>

<script type="text/javascript">
<!--
idCurrentPage = "development_node_Namespace";
beginPage();
//-->
</script>


<h1 class="title">Namespace node</h1>

<script type="text/javascript">
<!--
addIndex();
//-->
</script>


<script type="text/javascript">addTitle("Interface", 1);</script>

<textarea wrap="off" readonly="readonly" rows="5" cols="80">
Namespace {
    MFNode children NULL
    MFString name []
    MFString exception []
}
</textarea>
<br/>

<script type="text/javascript">addTitle("Description", 1);</script>

<p>
Special node to sandbox VRML scenes and Javascript code for widgets.
</p>

<p>Features:</p>
<ul>
<li>Limits access to some Javascript classes or methods (eg deleting other
    RecordStores, exit MeMo).</li>
<li>Isolates RMS access (each namespace uses it own RecordStore) to prevent
    collisions for caching and persistence.</li>
<li>Prevents runtime errors of the protected nodes to impact the current scene.</li>
<li>Multiple namespaces can be used at the same time or imbricated.</li>
</ul>
<br/>

<script type="text/javascript">addTitle("Fields", 1);</script>

<p>
<b>MFNode children NULL</b>:<br/>
Children nodes to protect in the namespace.
</p>

<p>
<b>MFString name []</b>:<br/>
Name of the namespace (must be unique for each namespace).
</p>

<p>
<b>MFString exception []</b>:<br/>
If an exception during runtime occurs in the children nodes, an exception
message will be emitted by this field.
</p>
<br/>

<script type="text/javascript">addTitle("Example", 1);</script>

<textarea wrap="off" readonly="readonly" rows="15" cols="80">
#VRML V2.0 utf8

# the scene that is inlined and that uses this scene as a softkey/alert provider
DEF NAMESPACE Namespace {
   children [
      DEF INLINE Inline { url "" }
   ]
}
DEF SCRIPT Script {
   eventIn MFString onException
   field SFNode inline USE INLINE
   field SFNode namespace USE NAMESPACE
   url "javascript:

      function quitApp() {
         if (namespace.name[0] == '') {
            inline.url[0] = 'jar://quit.m4m';
         }
      }
      function loadWidget (widgetId) {
         if (namespace.name[0] == '') { // only client namespace can load another client scene !
            namespace.name[0] = widgetId; // set namespace for inline
         }
      }
      function onException () {
         Browser.print ('Manager: Exception in scene: '+inline.url[0]+': '+onException[0]);
         if (String.endsWith (inline.url[0], 'main.m4m') == false) {
            namespace.name[0] = '';
            loadWidget ('main', false);
         }
      }
      function quitWidget (widgetId) {
         namespace.name[0] = '';
         loadWidget ('main', false);
      }
   "
}
ROUTE NAMESPACE.exception TO SCRIPT.onException
</textarea>
<br/>


<script type="text/javascript">
<!--
	addBackPageNavigator('widgets_development_nodes_ref', '');
//-->
</script>


<script type="text/javascript">
<!--
endPage();
//-->
</script>

</body>

</html>