disabled nashorn engine

  instanceof methods do not work on nashorn 8.0.25, disabled nashorn
  engine in general

added adapter

  adapt selection to IResource

Change-Id: Ia48866b73aace2062d51a11d917c2e598e3b64f5
diff --git a/JavaScript Snippets/Explore from here.js b/JavaScript Snippets/Explore from here.js
index c745ded..dfc7559 100644
--- a/JavaScript Snippets/Explore from here.js
+++ b/JavaScript Snippets/Explore from here.js
@@ -3,13 +3,14 @@
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
  * and is available at http://www.eclipse.org/legal/epl-v10.html
- * 
+ *
  * Contributors         : Christian Pontesegger - initial API and implementation
  * name                 : Explore from here
- * image				: platform:/plugin/org.eclipse.ease.ui/icons/eobj16/folder.png
- * toolbar				: Project Explorer
- * popup				: enableFor(org.eclipse.core.resources.IResource)
+ * image                : platform:/plugin/org.eclipse.ease.ui/icons/eobj16/folder.png
+ * toolbar              : Project Explorer
+ * popup                : enableFor(org.eclipse.core.resources.IResource)
  * script-type          : JavaScript
+ * script-engine        : !org.eclipse.ease.javascript.nashorn
  * description          : Start a file browser using current selection.
  ******************************************************************************/
 
@@ -20,9 +21,12 @@
 if (selection instanceof org.eclipse.jface.viewers.IStructuredSelection)
 	selection = selection.getFirstElement();
 
+if (!(selection instanceof org.eclipse.core.resources.IResource))
+	selection = adapt(selection, org.eclipse.core.resources.IResource)
+
 if (selection instanceof org.eclipse.core.resources.IFile)
 	selection = selection.getParent();
 
 if (selection instanceof org.eclipse.core.resources.IContainer)
-	// runProcess("/usr/bin/krusader", ["--left", getSystemProperty("user.home"), "--right", selection.getRawLocation()]);
-	runProcess("explorer.exe", [ selection.getRawLocation() ]);
+	runProcess("/usr/bin/krusader", [ "--left", getSystemProperty("user.home"), "--right", selection.getRawLocation() ]);
+	//        runProcess("explorer.exe", [ selection.getRawLocation() ]);
\ No newline at end of file