java/java-impl/src/com/intellij/refactoring/turnRefsToSuper/TurnRefsToSuperHandler.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  * created at Oct 25, 2001
  19  * @author Jeka
  20  */
  21 package com.intellij.refactoring.turnRefsToSuper;
  22
  23 import com.intellij.openapi.actionSystem.DataContext;
  24 import com.intellij.openapi.actionSystem.PlatformDataKeys;
  25 import com.intellij.openapi.editor.Editor;
  26 import com.intellij.openapi.editor.ScrollType;
  27 import com.intellij.openapi.project.Project;
  28 import com.intellij.psi.PsiAnonymousClass;
  29 import com.intellij.psi.PsiClass;
  30 import com.intellij.psi.PsiElement;
  31 import com.intellij.psi.PsiFile;
  32 import com.intellij.refactoring.HelpID;
  33 import com.intellij.refactoring.RefactoringActionHandler;
  34 import com.intellij.refactoring.RefactoringBundle;
  35 import com.intellij.refactoring.util.CommonRefactoringUtil;
  36 import com.intellij.refactoring.util.RefactoringHierarchyUtil;
  37 import org.jetbrains.annotations.NotNull;
  38
  39 import java.util.ArrayList;
  40
  41 public class TurnRefsToSuperHandler implements RefactoringActionHandler {
  42   public static final String REFACTORING_NAME = RefactoringBundle.message("use.interface.where.possible.title");
  43
  44
  45   public void invoke(@NotNull Project project, Editor editor, PsiFile file, DataContext dataContext) {
  46     int offset = editor.getCaretModel().getOffset();
  47     editor.getScrollingModel().scrollToCaret(ScrollType.MAKE_VISIBLE);
  48     PsiElement element = file.findElementAt(offset);
  49     while (true) {
  50       if (element == null || element instanceof PsiFile) {
  51         String message = RefactoringBundle.getCannotRefactorMessage(RefactoringBundle.message("error.wrong.caret.position.class"));
  52         CommonRefactoringUtil.showErrorHint(project, editor, message, REFACTORING_NAME, HelpID.TURN_REFS_TO_SUPER);
  53         return;
  54       }
  55       if (element instanceof PsiClass && !(element instanceof PsiAnonymousClass)) {
  56         invoke(project, new PsiElement[]{element}, dataContext);
  57         return;
  58       }
  59       element = element.getParent();
  60     }
  61   }
  62
  63   public void invoke(@NotNull final Project project, @NotNull PsiElement[] elements, DataContext dataContext) {
  64     if (elements.length != 1) return;
  65
  66         PsiClass subClass = (PsiClass) elements[0];
  67
  68     ArrayList basesList = RefactoringHierarchyUtil.createBasesList(subClass, true, true);
  69
  70     if (basesList.isEmpty()) {
  71       String message = RefactoringBundle.getCannotRefactorMessage(RefactoringBundle.message("interface.does.not.have.base.interfaces", subClass.getQualifiedName()));
  72       Editor editor = PlatformDataKeys.EDITOR.getData(dataContext);
  73       CommonRefactoringUtil.showErrorHint(project, editor, message, REFACTORING_NAME, HelpID.TURN_REFS_TO_SUPER);
  74       return;
  75     }
  76
  77     new TurnRefsToSuperDialog(project, subClass, basesList).show();
  78   }
  79
  80 }