Bug 4369 F2 should work even if "Hide Text Hover" is enabled
- enable "Hide Text Hover" - position the cursor on a type - press F2 observe: nothing happens although I explicitly requested JavaDoc help.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/text/JavaSourceViewerConfiguration.java
reconciler.setDamager(dr, IDocument.DEFAULT_CONTENT_TYPE);
		reconciler.setRepairer(dr, IDocument.DEFAULT_CONTENT_TYPE);
		dr= new RuleBasedDamagerRepairer(getJavaDocScanner());
		reconciler.setDamager(dr, JavaPartitionScanner.JAVA_DOC);
		reconciler.setRepairer(dr, JavaPartitionScanner.JAVA_DOC);
		dr= new RuleBasedDamagerRepairer(getMultilineCommentScanner());		
		reconciler.setDamager(dr, JavaPartitionScanner.JAVA_MULTI_LINE_COMMENT);
		reconciler.setRepairer(dr, JavaPartitionScanner.JAVA_MULTI_LINE_COMMENT);
		dr= new RuleBasedDamagerRepairer(getSinglelineCommentScanner());		
		reconciler.setDamager(dr, JavaPartitionScanner.JAVA_SINGLE_LINE_COMMENT);
		reconciler.setRepairer(dr, JavaPartitionScanner.JAVA_SINGLE_LINE_COMMENT);
		
		return reconciler;
	}
	/*
	 * @see SourceViewerConfiguration#getContentAssistant(ISourceViewer)
	 */
	public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {
		
		if (getEditor() != null) {
		
			ContentAssistant assistant= new ContentAssistant();
			assistant.setContentAssistProcessor(new JavaCompletionProcessor(getEditor()), IDocument.DEFAULT_CONTENT_TYPE);
			assistant.setContentAssistProcessor(new JavaDocCompletionProcessor(getEditor()), JavaPartitionScanner.JAVA_DOC);
			
			ContentAssistPreference.configure(assistant, getPreferenceStore());
			
			assistant.setContextInformationPopupOrientation(assistant.CONTEXT_INFO_ABOVE);
			assistant.setInformationControlCreator(getInformationControlCreator(sourceViewer));