这是一个有点异国情调的问题,但无论如何我都会尝试。
我正在使用 MEF 编写 Visual Studio 2010 扩展。在我的代码中的某个时刻,每当保存文档时,我都需要提供一些错误字形(如刹车点)。问题是,如果不让用户写任何东西,我似乎无法找到如何强制调用GetTags
我的方法。ITagger
我可以捕获文档保存事件,但我错过了这之间的“链接”,并以某种方式获取GetTags
要调用的方法。有任何想法吗?
这是一些代码:
internal class RTextErrorTag : IGlyphTag
{}
class RTextErrorGlyphTagger : ITagger<RTextErrorTag>
{
private IClassifier mClassifier;
private SimpleTagger<ErrorTag> mSquiggleTagger;
private EnvDTE._DTE mMSVSInstance = null;
private List<object> mDTEEvents = new List<object>();
internal RTextErrorGlyphTagger(IClassifier classifier, IErrorProviderFactory squiggleProviderFactory, ITextBuffer buffer, IServiceProvider serviceProvider)
{
this.mClassifier = classifier;
this.mSquiggleTagger = squiggleProviderFactory.GetErrorTagger(buffer);
mMSVSInstance = serviceProvider.GetService(typeof(EnvDTE._DTE)) as EnvDTE._DTE;
var eventHolder = mMSVSInstance.Events.DocumentEvents;
mDTEEvents.Add(eventHolder);
eventHolder.DocumentSaved += new EnvDTE._dispDocumentEvents_DocumentSavedEventHandler(OnDocumentSaved);
}
void OnDocumentSaved(EnvDTE.Document Document)
{
//fire up event to renew glyphs - how to force GetTags method?
var temp = this.TagsChanged;
if (temp != null)
temp(this, new SnapshotSpanEventArgs(new SnapshotSpan() )); //how to foce get
}
IEnumerable<ITagSpan<RTextErrorTag>> ITagger<RTextErrorTag>.GetTags(NormalizedSnapshotSpanCollection spans)
{
foreach (SnapshotSpan span in spans)
{
foreach (var error in this.mSquiggleTagger.GetTaggedSpans(span))
{
yield return new TagSpan<RTextErrorTag>(new SnapshotSpan(span.Start, 1), new RTextErrorTag());
}
}
}
public event EventHandler<SnapshotSpanEventArgs> TagsChanged;
}