java/java-impl/src/com/intellij/refactoring/actions/EncapsulateFieldsAction.java

   1
   2 /*
   3  * Copyright 2000-2009 JetBrains s.r.o.
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  * http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17 package com.intellij.refactoring.actions;
  18
  19 import com.intellij.openapi.actionSystem.DataContext;
  20 import com.intellij.psi.PsiClass;
  21 import com.intellij.psi.PsiElement;
  22 import com.intellij.psi.PsiField;
  23 import com.intellij.refactoring.RefactoringActionHandler;
  24 import com.intellij.refactoring.encapsulateFields.EncapsulateFieldsHandler;
  25
  26 public class EncapsulateFieldsAction extends BaseRefactoringAction {
  27   public boolean isAvailableInEditorOnly() {
  28     return false;
  29   }
  30
  31   public boolean isEnabledOnElements(PsiElement[] elements) {
  32     if (elements.length == 1) {
  33       return elements[0] instanceof PsiClass || isAcceptedField(elements[0]);
  34     }
  35     else if (elements.length > 1){
  36       for (int  idx = 0;  idx < elements.length;  idx++) {
  37         if (!isAcceptedField(elements[idx])) {
  38           return false;
  39         }
  40       }
  41       return true;
  42     }
  43     return false;
  44   }
  45
  46   public RefactoringActionHandler getHandler(DataContext dataContext) {
  47     return new EncapsulateFieldsHandler();
  48   }
  49
  50   private static boolean isAcceptedField(PsiElement element) {
  51     if (element instanceof PsiField) {
  52       if (((PsiField)element).getContainingClass() != null) {
  53         return true;
  54       }
  55     }
  56     return false;
  57   }
  58 }