Namespace node

Namespace {
    MFNode children NULL
    MFString name []
    MFString exception []
}

Special node to sandbox VRML scenes and Javascript code for widgets.

Features:

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

MFNode children NULL:
Children nodes to protect in the namespace.

MFString name []:
Name of the namespace (must be unique for each namespace).

MFString exception []:
If an exception during runtime occurs in the children nodes, an exception message will be emitted by this field.

#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