diff -r eef7c6acd0f3 org.symbian.tools.wrttools/plugin.xml
--- a/org.symbian.tools.wrttools/plugin.xml	Mon Apr 19 18:04:34 2010 -0700
+++ b/org.symbian.tools.wrttools/plugin.xml	Tue Apr 20 15:14:30 2010 -0700
@@ -875,5 +875,13 @@
           installer="org.symbian.tools.wrttools.core.libraries.PhoneGapInstaller"
           name="PhoneGap">
     </library>
+ </extension>
+ <extension
+       id="org.symbian.tools.wrttools.phonegap"
+       name="PhoneGap Library Support"
+       point="org.eclipse.wst.jsdt.core.inferrenceSupport">
+    <inferenceProvider
+          class="org.symbian.tools.wrttools.core.libraries.jsdt.PhoneGapInferrenceProvider">
+    </inferenceProvider>
  </extension>
 </plugin>
diff -r eef7c6acd0f3 org.symbian.tools.wrttools/src/org/symbian/tools/wrttools/core/libraries/PlatformServicesTypeProvider.java
--- a/org.symbian.tools.wrttools/src/org/symbian/tools/wrttools/core/libraries/PlatformServicesTypeProvider.java	Mon Apr 19 18:04:34 2010 -0700
+++ b/org.symbian.tools.wrttools/src/org/symbian/tools/wrttools/core/libraries/PlatformServicesTypeProvider.java	Tue Apr 20 15:14:30 2010 -0700
@@ -41,7 +41,7 @@
                 if (file.exists()) {
                     IProject project = file.getProject();
                     if (ProjectUtils.hasWrtNature(project)) {
-                        return InferrenceProvider.ONLY_THIS;
+                        return InferrenceProvider.MAYBE_THIS;
                     }
                 }
             }
diff -r eef7c6acd0f3 org.symbian.tools.wrttools/src/org/symbian/tools/wrttools/core/libraries/jsdt/PhoneGapInferEngine.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.symbian.tools.wrttools/src/org/symbian/tools/wrttools/core/libraries/jsdt/PhoneGapInferEngine.java	Tue Apr 20 15:14:30 2010 -0700
@@ -0,0 +1,70 @@
+/**
+ * Copyright (c) 2010 Symbian Foundation and/or its subsidiary(-ies).
+ * All rights reserved.
+ * This component and the accompanying materials are made available
+ * under the terms of the License "Eclipse Public License v1.0"
+ * which accompanies this distribution, and is available
+ * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+ *
+ * Initial Contributors:
+ * Symbian Foundation - initial contribution.
+ * Contributors:
+ * Description:
+ * Overview:
+ * Details:
+ * Platforms/Drives/Compatibility:
+ * Assumptions/Requirement/Pre-requisites:
+ * Failures and causes:
+ */
+package org.symbian.tools.wrttools.core.libraries.jsdt;
+
+import java.util.Map;
+import java.util.TreeMap;
+
+import org.eclipse.wst.jsdt.core.infer.InferEngine;
+import org.eclipse.wst.jsdt.core.infer.InferredAttribute;
+import org.eclipse.wst.jsdt.core.infer.InferredType;
+import org.eclipse.wst.jsdt.internal.compiler.ast.CompilationUnitDeclaration;
+
+public class PhoneGapInferEngine extends InferEngine {
+    private static final Map<String, String> TYPE_TO_PROPERTY = new TreeMap<String, String>();
+    private CompilationUnitDeclaration compilationUnit;
+    static {
+        TYPE_TO_PROPERTY.put("Notification", "notification");
+        TYPE_TO_PROPERTY.put("Accelerometer", "accelerometer");
+        TYPE_TO_PROPERTY.put("Camera", "camera");
+        TYPE_TO_PROPERTY.put("Contacts", "contacts");
+        TYPE_TO_PROPERTY.put("Geolocation", "geolocation");
+        TYPE_TO_PROPERTY.put("Media", "media");
+        TYPE_TO_PROPERTY.put("Notification", "notification");
+        TYPE_TO_PROPERTY.put("Orientation", "orientation");
+        TYPE_TO_PROPERTY.put("Sms", "sms");
+        TYPE_TO_PROPERTY.put("Storage", "storage");
+    }
+
+    @SuppressWarnings("restriction")
+    @Override
+    public void setCompilationUnit(CompilationUnitDeclaration compilationUnit) {
+        this.compilationUnit = compilationUnit;
+        super.setCompilationUnit(compilationUnit);
+    }
+
+    @SuppressWarnings("restriction")
+    @Override
+    protected InferredType addType(char[] className, boolean isDefinition) {
+        InferredType type = super.addType(className, isDefinition);
+        if (TYPE_TO_PROPERTY.containsKey(String.valueOf(type.getName()))) {
+            InferredType inferredType = compilationUnit.findInferredType("Navigator".toCharArray());
+            System.out.println(inferredType);
+            if (inferredGlobal != null) {
+                InferredAttribute[] attributes = inferredGlobal.attributes;
+                for (InferredAttribute attr : attributes) {
+                    System.out.println(String.valueOf(attr.name));
+                }
+            }
+            final InferredType definedType = findDefinedType("Navigator".toCharArray());
+            System.out.println(definedType);
+        }
+        return type;
+    }
+}
diff -r eef7c6acd0f3 org.symbian.tools.wrttools/src/org/symbian/tools/wrttools/core/libraries/jsdt/PhoneGapInferrenceProvider.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.symbian.tools.wrttools/src/org/symbian/tools/wrttools/core/libraries/jsdt/PhoneGapInferrenceProvider.java	Tue Apr 20 15:14:30 2010 -0700
@@ -0,0 +1,89 @@
+/**
+ * Copyright (c) 2010 Symbian Foundation and/or its subsidiary(-ies).
+ * All rights reserved.
+ * This component and the accompanying materials are made available
+ * under the terms of the License "Eclipse Public License v1.0"
+ * which accompanies this distribution, and is available
+ * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+ *
+ * Initial Contributors:
+ * Symbian Foundation - initial contribution.
+ * Contributors:
+ * Description:
+ * Overview:
+ * Details:
+ * Platforms/Drives/Compatibility:
+ * Assumptions/Requirement/Pre-requisites:
+ * Failures and causes:
+ */
+package org.symbian.tools.wrttools.core.libraries.jsdt;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.TreeSet;
+
+import org.eclipse.core.resources.IFile;
+import org.eclipse.core.resources.ResourcesPlugin;
+import org.eclipse.core.runtime.Path;
+import org.eclipse.wst.jsdt.core.IJavaScriptUnit;
+import org.eclipse.wst.jsdt.core.IType;
+import org.eclipse.wst.jsdt.core.JavaScriptCore;
+import org.eclipse.wst.jsdt.core.JavaScriptModelException;
+import org.eclipse.wst.jsdt.core.infer.IInferenceFile;
+import org.eclipse.wst.jsdt.core.infer.InferEngine;
+import org.eclipse.wst.jsdt.core.infer.InferrenceProvider;
+import org.eclipse.wst.jsdt.core.infer.RefactoringSupport;
+import org.eclipse.wst.jsdt.core.infer.ResolutionConfiguration;
+import org.symbian.tools.wrttools.Activator;
+
+public class PhoneGapInferrenceProvider implements InferrenceProvider {
+    public static final String ID = "org.symbian.tools.wrttools.phonegap";
+    private static final Collection<String> PHONEGAP_TYPES = new TreeSet<String>(Arrays.asList("Acceleration",
+            "AccelerationOptions", "Accelerometer", "Camera", "DeviceError", "Contacts", "Contact", "Geolocation",
+            "PositionOptions", "Coordinates", "Media", "Notification", "Orientation", "Position", "PositionError",
+            "Sms", "Storage"));
+
+    public int applysTo(IInferenceFile scriptFile) {
+        String path = String.valueOf(scriptFile.getFileName());
+
+        IFile file = ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(path));
+        if (file != null && file.isAccessible()) {
+            IJavaScriptUnit unit = (IJavaScriptUnit) JavaScriptCore.create(file);
+            try {
+                IType[] types = unit.getAllTypes();
+                int typeCount = 0;
+                for (IType type : types) {
+                    if (PHONEGAP_TYPES.contains(type.getElementName())) {
+                        typeCount += 1;
+                    }
+                }
+                if (typeCount > 1) {
+                    return ONLY_THIS;
+                }
+            } catch (JavaScriptModelException e) {
+                Activator.log(e);
+            }
+        }
+        return NOT_THIS;
+    }
+
+    public String getID() {
+        return ID;
+    }
+
+    public InferEngine getInferEngine() {
+        final InferEngine engine = new PhoneGapInferEngine();
+        engine.inferenceProvider = this;
+        return engine;
+    }
+
+    public RefactoringSupport getRefactoringSupport() {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    public ResolutionConfiguration getResolutionConfiguration() {
+        return new ResolutionConfiguration();
+    }
+
+}
