import com.intellij.usageView.UsageViewShortNameLocation; //导入依赖的package包/类
@Override
public String getElementDescription(@NotNull PsiElement element, @NotNull ElementDescriptionLocation location) {
    if (location == UsageViewNodeTextLocation.INSTANCE && element instanceof PsiNamedElement) {
        return getElementDescription(element, UsageViewShortNameLocation.INSTANCE);
    }

    if (location == UsageViewShortNameLocation.INSTANCE || location == UsageViewLongNameLocation.INSTANCE) {
        if (element instanceof PsiNamedElement) {
            return ((PsiNamedElement) element).getName();
        }
    }

    if (location == UsageViewTypeLocation.INSTANCE) {
        if (element instanceof PsiModuleName) {
            return "module";
        } else if (element instanceof PsiTypeName) {
            return "type";
        } else if (element instanceof PsiVarName) {
            return "let";
        }
    }

    return element.toString();
}
 

import com.intellij.usageView.UsageViewShortNameLocation; //导入依赖的package包/类
@Nullable
@Override
public String getElementDescription(@NotNull final PsiElement element, @NotNull final ElementDescriptionLocation location) {
  if (element instanceof PyStringLiteralExpression) {
    final PyMagicLiteralExtensionPoint point = PyMagicLiteralTools.getPoint((PyStringLiteralExpression)element);
    if (point != null) {
      if (location instanceof UsageViewTypeLocation) {
        return point.getLiteralType();
      }
      if ((location instanceof UsageViewShortNameLocation) || (location instanceof UsageViewLongNameLocation)) {
        return ((StringLiteralExpression)element).getStringValue();
      }
    }
  }
  return null;
}
 

import com.intellij.usageView.UsageViewShortNameLocation; //导入依赖的package包/类
@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;
}
 

import com.intellij.usageView.UsageViewShortNameLocation; //导入依赖的package包/类
@Nullable
@Override
public String getElementDescription(@NotNull PsiElement element, @NotNull ElementDescriptionLocation location) {
  // https://intellij-support.jetbrains.com/hc/en-us/community/posts/206765785-Custom-name-for-Find-Usages-of-symbol
  if (location instanceof UsageViewLongNameLocation ||
      location instanceof UsageViewShortNameLocation) {

    if (element instanceof SchemaTypeDef) {
      SchemaTypeDef schemaTypeDef = (SchemaTypeDef) element;
      return SchemaPresentationUtil.getName(schemaTypeDef, true);
    }

    if (element instanceof SchemaQnSegment) {
      SchemaQnSegment fqnSegment = (SchemaQnSegment) element;
      return fqnSegment.getQn().toString();
    }

    if (element instanceof SchemaEntityTagRef) {
      SchemaEntityTagRef tagRef = (SchemaEntityTagRef) element;
      return tagRef.getQid().getText();
    }
  }

  return null;
}
 

import com.intellij.usageView.UsageViewShortNameLocation; //导入依赖的package包/类
@Nullable
@Override
public String getElementDescription(@NotNull PsiElement element, @NotNull ElementDescriptionLocation location) {
    if (!TranslationUtils.isTranslationFile(element.getContainingFile())) {
        return null;
    }

    if (location instanceof UsageViewTypeLocation) {
        return "Translation key";
    }

    if (location instanceof UsageViewNodeTextLocation || location instanceof UsageViewShortNameLocation || location instanceof UsageViewLongNameLocation) {
        return TranslationHashElement.newInstance(element).getFullKey();
    }

    return null;
}
 

import com.intellij.usageView.UsageViewShortNameLocation; //导入依赖的package包/类
@NotNull
@Override
public String getElementInfo(@NotNull PsiElement e)
{
	if(e instanceof PsiLambdaExpression)
	{
		return PsiExpressionTrimRenderer.render((PsiExpression) e);
	}
	else if(e instanceof PsiAnonymousClass)
	{
		String name = ((PsiAnonymousClass) e).getBaseClassReference().getReferenceName();
		return "new " + notNullize(name, "class");
	}
	String description = ElementDescriptionUtil.getElementDescription(e, UsageViewShortNameLocation.INSTANCE);
	String suffix = e instanceof PsiParameterListOwner ? "()" : null;
	return suffix != null ? description + suffix : description;
}
 

import com.intellij.usageView.UsageViewShortNameLocation; //导入依赖的package包/类
@Nullable
@Override
public String getElementDescription(@NotNull PsiElement element, @NotNull ElementDescriptionLocation location) {
    if (location instanceof UsageViewTypeLocation) {
        if (element instanceof FrogAttribute) {
            return "Attribute";
        }
    } else if (location instanceof UsageViewNodeTextLocation
            || location instanceof UsageViewShortNameLocation
            || location instanceof UsageViewLongNameLocation) {
        if (element instanceof FrogAttribute) {
            return ((FrogAttribute) element).getName();
        }
    }

    return null;
}
 

import com.intellij.usageView.UsageViewShortNameLocation; //导入依赖的package包/类
@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();
}
 

import com.intellij.usageView.UsageViewShortNameLocation; //导入依赖的package包/类
@Nullable
@Override
@RequiredReadAction
public String getElementDescription(@NotNull PsiElement element, @NotNull ElementDescriptionLocation location)
{
	if(location == UsageViewShortNameLocation.INSTANCE && element instanceof CSharpNamedElement)
	{
		return ((CSharpNamedElement) element).getNameWithAt();
	}
	return null;
}