我正在尝试向我的编辑器添加内容辅助。我已经添加
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;
}
编辑器配置，然后完成处理器类：
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";
}
}
...但它不起作用。初始化正常，但自动激活不起作用，当我按 ctrl-space（我已将 org.eclipse.ui.edit.text.contentAssist.proposals 命令添加到 Bindings 分机点）出现空列表（也是不在光标附近，而是在某个固定位置）。我究竟做错了什么？