Unable to add AutoComplete values for JavaScript using a CompletionContributer and CompletionProvider

Note: I had to repost this as I accidentally deleted it

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Hi everyone,

I am trying to develop a plugin (my first for a JetBrains  IDE) for JavaScript that adds values to the CompletionResultSet. I have  followed the small tutorial found here:http://confluence.jetbrains.com/display/IntelliJIDEA/Completion+Contributor, however I cannot actually get my test completion result to show up.

Basically, when I create the CompletionProvider instance, I  use 'extend' and pass a PsiElementPattern for 'var' statements and a  CompletionProvider that should add the test completion result. You can  see what my code essentially looks like below:

// MyCompletionContributor.java

public class MyCompletionContributor extends CompletionContributor {

    public MyCompletionContributor() {

        super();

        PsiElementPattern pattern = PlatformPatterns

                .psiElement(JSElementTypes.REFERENCE_EXPRESSION);

        MyCompletionProvider completionProvider = new MyCompletionProvider();

        extend(CompletionType.BASIC, pattern, completionProvider);

    }

}

// MyCompletionProvider.java

public class MyCompletionProvider extends CompletionProvider<CompletionParameters> {

    @Override

    protected void addCompletions(

            @NotNull CompletionParameters completionParameters,

            ProcessingContext processingContext,

            @NotNull CompletionResultSet completionResultSet) {

        completionResultSet.addElement(LookupElementBuilder.create("TESTING!"));

    }

}

// plugin.xml

<extensions defaultExtensionNs="com.intellij">

      <completion.contributor order="FIRST" language="any" implementationClass="MyCompletionContributor" />

</extensions>

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I can see that MyCompletionContributor gets instantiated  when I open a JS file. I can also see that the contributor  'fillCompletionVariants' method is called. However, the provider  'addCompletions' method does not seem to ever get called. I have tried  many different JS PsiElementPattern types and none of them seem to work.

I checked the result of "CompletionParameters.getPosition().getContext()" in "CompletionContributor.fillCompletionVariants" and I get JSReferenceExpression instance. So it seems like the PsiElementPattern should be matching the current context. However the provider 'addCompletions' method is never invoked.

What could I be missing here? If anyone knows or can point  me to documentation that I can use to find a solution, I would very much  appreciate it.

Thanks,

James