com.intellij.psi.ElementDescriptionLocation#com.intellij.usageView.UsageViewShortNameLocation源码实例Demo

@Nullable
@Override
public String getElementDescription(PsiElement element, ElementDescriptionLocation location) {
  if (!(element instanceof BuildElement)) {
    return null;
  }
  if (location instanceof UsageViewLongNameLocation) {
    return ((BuildElement) element).getPresentableText();
  }
  if (location instanceof UsageViewShortNameLocation) {
    if (element instanceof PsiNameIdentifierOwner) {
      // this is used by rename operations, so needs to be accurate
      return ((PsiNameIdentifierOwner) element).getName();
    }
    if (element instanceof PsiFile) {
      return ((PsiFile) element).getName();
    }
    return ((BuildElement) element).getPresentableText();
  }
  return null;
}
 

@Nullable
@Override
@RequiredReadAction
public String getElementDescription(@Nonnull PsiElement element, @Nonnull ElementDescriptionLocation location)
{
	if(location == UsageViewShortNameLocation.INSTANCE && element instanceof CSharpNamedElement)
	{
		return ((CSharpNamedElement) element).getNameWithAt();
	}
	return null;
}
 

@Nullable
private static String getQuickNavigateInfo(PsiElement element) {
  final String name = ElementDescriptionUtil.getElementDescription(element, UsageViewShortNameLocation.INSTANCE);
  if (StringUtil.isEmpty(name)) return null;
  final String typeName = ElementDescriptionUtil.getElementDescription(element, UsageViewTypeLocation.INSTANCE);
  final PsiFile file = element.getContainingFile();
  final StringBuilder sb = new StringBuilder();
  if (StringUtil.isNotEmpty(typeName)) sb.append(typeName).append(" ");
  sb.append("\"").append(name).append("\"");
  if (file != null && file.isPhysical()) {
    sb.append(" [").append(file.getName()).append("]");
  }
  return sb.toString();
}