java/java-impl/src/com/intellij/codeInsight/generation/actions/GenerateSuperMethodCallHandler.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
  17 /**
  18  * @author cdr
  19  */
  20 package com.intellij.codeInsight.generation.actions;
  21
  22 import com.intellij.codeInsight.CodeInsightActionHandler;
  23 import com.intellij.codeInsight.CodeInsightUtilBase;
  24 import com.intellij.codeInsight.generation.OverrideImplementUtil;
  25 import com.intellij.openapi.project.Project;
  26 import com.intellij.openapi.editor.Editor;
  27 import com.intellij.openapi.editor.ScrollType;
  28 import com.intellij.openapi.diagnostic.Logger;
  29 import com.intellij.psi.*;
  30 import com.intellij.psi.util.PsiTreeUtil;
  31 import com.intellij.util.IncorrectOperationException;
  32 import org.jetbrains.annotations.NotNull;
  33
  34 import java.util.List;
  35
  36 public class GenerateSuperMethodCallHandler implements CodeInsightActionHandler {
  37   private static final Logger LOG = Logger.getInstance("#com.intellij.codeInsight.generation.actions.GenerateSuperMethodCallHandler");
  38
  39   public void invoke(@NotNull Project project, @NotNull Editor editor, @NotNull PsiFile file) {
  40     PsiMethod method = canInsertSuper(project, editor, file);
  41     try {
  42       PsiMethod template = (PsiMethod)method.copy();
  43
  44       OverrideImplementUtil.setupMethodBody(template, method, method.getContainingClass());
  45       PsiStatement superCall = template.getBody().getStatements()[0];
  46       PsiCodeBlock body = method.getBody();
  47       PsiElement toGo;
  48       if (body.getLBrace() == null) {
  49         toGo = body.addBefore(superCall, null);
  50       }
  51       else {
  52         toGo = body.addAfter(superCall, body.getLBrace());
  53       }
  54       toGo = CodeInsightUtilBase.forcePsiPostprocessAndRestoreElement(toGo);
  55       editor.getCaretModel().moveToOffset(toGo.getTextOffset());
  56       editor.getScrollingModel().scrollToCaret(ScrollType.RELATIVE);
  57     }
  58     catch (IncorrectOperationException e) {
  59       LOG.error(e);
  60     }
  61   }
  62
  63   public boolean startInWriteAction() {
  64     return true;
  65   }
  66
  67   public static PsiMethod canInsertSuper(Project project, Editor editor, PsiFile file) {
  68     PsiDocumentManager.getInstance(project).commitAllDocuments();
  69
  70     int offset = editor.getCaretModel().getOffset();
  71     PsiElement element = file.findElementAt(offset);
  72     if (element == null) return null;
  73     PsiCodeBlock codeBlock = PsiTreeUtil.getParentOfType(element, PsiCodeBlock.class);
  74     if (codeBlock == null) return null;
  75     if (!(codeBlock.getParent() instanceof PsiMethod)) return null;
  76     PsiMethod method = (PsiMethod)codeBlock.getParent();
  77     List<? extends HierarchicalMethodSignature> superSignatures = method.getHierarchicalMethodSignature().getSuperSignatures();
  78     for (HierarchicalMethodSignature superSignature : superSignatures) {
  79       if (!superSignature.getMethod().hasModifierProperty(PsiModifier.ABSTRACT)) return method;
  80     }
  81
  82     return null;
  83   }
  84 }