Question

I’m trying to add content assist to my editor. I’ve added

    public IContentAssistant getContentAssistant(ISourceViewer sv) {
    ContentAssistant ca = new ContentAssistant();
    IContentAssistProcessor pr = new TagCompletionProcessor();
    ca.setContentAssistProcessor(pr, XMLPartitionScanner.XML_TAG);
    ca.setContentAssistProcessor(pr, IDocument.DEFAULT_CONTENT_TYPE);
    return ca;
}

to editor configuration, then made completion processor class:

public class TagCompletionProcessor implements IContentAssistProcessor {
private ITypedRegion wordRegion;
private String currentWord;
private SmartTreeSet tags;
public TagCompletionProcessor() {
    tags = new SmartTreeSet();
    //filling tags skipped
}
@Override
public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer,
        int offset) {
    System.out.println("compute");
    wordRegion = viewer.getDocument().getDocumentPartitioner().getPartition(offset);
    try {
        int offs = wordRegion.getOffset();
        int len = wordRegion.getLength();
        currentWord = viewer.getDocument().get(offs, len);
        return tags.getProposals(currentWord.toLowerCase(), offs, len);
    } catch (BadLocationException e) {
        return null;
    }
}
@Override
public IContextInformation[] computeContextInformation(ITextViewer viewer,
        int offset) {
    return null;
}
@Override
public char[] getCompletionProposalAutoActivationCharacters() {
    return new char[] {'<'};
}
@Override
public char[] getContextInformationAutoActivationCharacters() {
    return null;
}
@Override
public IContextInformationValidator getContextInformationValidator() {
    return null;
}
@Override
public String getErrorMessage() {
    return "No tags found";
}

}

… but it’s not working. Init goes normal, but auto-activation does not working and when I’m pressing ctrl-space (I’ve added org.eclipse.ui.edit.text.contentAssist.proposals command to Bindings ext point) empty list appearing (also it’s not near cursor, but in some constant place). What am I doing wrong?

Answer 1

Sorry, there was some null output in the middle. What a fail =(