java/java-impl/src/com/intellij/codeInsight/intention/impl/AddOverrideAnnotationAction.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.codeInsight.intention.impl;
  17
  18 import com.intellij.codeInsight.CodeInsightBundle;
  19 import com.intellij.codeInsight.intention.AddAnnotationFix;
  20 import com.intellij.codeInsight.intention.IntentionAction;
  21 import com.intellij.openapi.editor.Editor;
  22 import com.intellij.openapi.project.Project;
  23 import com.intellij.pom.java.LanguageLevel;
  24 import com.intellij.psi.*;
  25 import com.intellij.psi.util.PsiTreeUtil;
  26 import com.intellij.psi.util.PsiUtil;
  27 import com.intellij.util.IncorrectOperationException;
  28 import org.jetbrains.annotations.NotNull;
  29
  30 /**
  31  * @author ven
  32  */
  33 public class AddOverrideAnnotationAction implements IntentionAction {
  34   private static final String JAVA_LANG_OVERRIDE = "java.lang.Override";
  35
  36   @NotNull
  37   public String getText() {
  38     return CodeInsightBundle.message("intention.add.override.annotation");
  39   }
  40
  41   @NotNull
  42   public String getFamilyName() {
  43     return CodeInsightBundle.message("intention.add.override.annotation.family");
  44   }
  45
  46   public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) {
  47     if (!PsiUtil.isLanguageLevel5OrHigher(file)) return false;
  48     PsiMethod method = findMethod(file, editor.getCaretModel().getOffset());
  49     if (method == null) return false;
  50     if (method.getModifierList().findAnnotation(JAVA_LANG_OVERRIDE) != null) return false;
  51     PsiMethod[] superMethods = method.findSuperMethods();
  52     for (PsiMethod superMethod : superMethods) {
  53       if (!superMethod.hasModifierProperty(PsiModifier.ABSTRACT)
  54           && new AddAnnotationFix(JAVA_LANG_OVERRIDE, method).isAvailable(project, editor, file)) {
  55         return true;
  56       }
  57     }
  58
  59     return false;
  60   }
  61
  62   public void invoke(@NotNull Project project, Editor editor, PsiFile file) throws IncorrectOperationException {
  63     PsiMethod method = findMethod(file, editor.getCaretModel().getOffset());
  64     new AddAnnotationFix(JAVA_LANG_OVERRIDE, method).invoke(project, editor, file);
  65   }
  66
  67   private static PsiMethod findMethod(PsiFile file, int offset) {
  68     PsiElement element = file.findElementAt(offset);
  69     PsiMethod res = PsiTreeUtil.getParentOfType(element, PsiMethod.class);
  70     if (res == null) return null;
  71
  72     //Not available in method's body
  73     PsiCodeBlock body = res.getBody();
  74     if (body == null) return null;
  75     if (body.getTextRange().getStartOffset() <= offset) return null;
  76
  77     return res;
  78   }
  79
  80   public boolean startInWriteAction() {
  81     return true;
  82   }
  83 }