java/java-impl/src/com/intellij/refactoring/actions/InvertBooleanAction.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.refactoring.actions;
  17
  18 import com.intellij.openapi.actionSystem.DataContext;
  19 import com.intellij.openapi.editor.Editor;
  20 import com.intellij.psi.PsiElement;
  21 import com.intellij.psi.PsiMethod;
  22 import com.intellij.psi.PsiType;
  23 import com.intellij.psi.PsiVariable;
  24 import com.intellij.refactoring.RefactoringActionHandler;
  25 import com.intellij.refactoring.invertBoolean.InvertBooleanHandler;
  26
  27 /**
  28  * @author ven
  29  */
  30 public class InvertBooleanAction extends BaseRefactoringAction {
  31   protected boolean isAvailableInEditorOnly() {
  32     return false;
  33   }
  34
  35   protected boolean isEnabledOnElements(PsiElement[] elements) {
  36     return elements.length == 1 && (elements[0] instanceof PsiMethod || elements[0] instanceof PsiVariable);
  37   }
  38
  39   protected boolean isAvailableOnElementInEditor(final PsiElement element, final Editor editor) {
  40     if (element instanceof PsiVariable) {
  41       return PsiType.BOOLEAN.equals(((PsiVariable) element).getType());
  42     }
  43     else if (element instanceof PsiMethod) {
  44       return PsiType.BOOLEAN.equals(((PsiMethod) element).getReturnType());
  45     }
  46     return false;
  47   }
  48
  49   protected RefactoringActionHandler getHandler(DataContext dataContext) {
  50     return new InvertBooleanHandler();
  51   }
  52 }