| /* |
| * Copyright 2000-2012 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.lang.findUsages; |
| |
| import com.intellij.lang.cacheBuilder.WordsScanner; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiNamedElement; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * The default empty implementation of the {@link FindUsagesProvider} interface. |
| * @author max |
| */ |
| public class EmptyFindUsagesProvider implements FindUsagesProvider { |
| |
| @Nullable |
| public WordsScanner getWordsScanner() { |
| return null; |
| } |
| |
| public boolean canFindUsagesFor(@NotNull PsiElement psiElement) { |
| return false; |
| } |
| |
| @Nullable |
| public String getHelpId(@NotNull PsiElement psiElement) { |
| return null; |
| } |
| |
| @NotNull |
| public String getType(@NotNull PsiElement element) { |
| return ""; |
| } |
| |
| @NotNull |
| public String getDescriptiveName(@NotNull PsiElement element) { |
| return getNodeText(element, true); |
| } |
| |
| @NotNull |
| public String getNodeText(@NotNull PsiElement element, boolean useFullName) { |
| if (element instanceof PsiNamedElement) { |
| final String name = ((PsiNamedElement)element).getName(); |
| if (name != null) { |
| return name; |
| } |
| } |
| return ""; |
| } |
| } |