java/java-impl/src/com/intellij/codeInsight/daemon/impl/quickfix/CreateVarFromUsageFix.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 by IntelliJ IDEA.
  19  * User: mike
  20  * Date: Aug 14, 2002
  21  * Time: 5:15:42 PM
  22  * To change template for new class use
  23  * Code Style | Class Templates options (Tools | IDE Options).
  24  */
  25 package com.intellij.codeInsight.daemon.impl.quickfix;
  26
  27 import com.intellij.psi.PsiElement;
  28 import com.intellij.psi.PsiMethodCallExpression;
  29 import com.intellij.psi.PsiReferenceExpression;
  30
  31 public abstract class CreateVarFromUsageFix extends CreateFromUsageBaseFix {
  32   protected final PsiReferenceExpression myReferenceExpression;
  33
  34   public CreateVarFromUsageFix(PsiReferenceExpression referenceElement) {
  35     myReferenceExpression = referenceElement;
  36   }
  37
  38   protected boolean isValidElement(PsiElement element) {
  39     PsiReferenceExpression expression = (PsiReferenceExpression) element;
  40     return CreateFromUsageUtils.isValidReference(expression, true);
  41   }
  42
  43   protected PsiElement getElement() {
  44     if (!myReferenceExpression.isValid() || !myReferenceExpression.getManager().isInProject(myReferenceExpression)) return null;
  45
  46     PsiElement parent = myReferenceExpression.getParent();
  47
  48     if (parent instanceof PsiMethodCallExpression) return null;
  49
  50     if (myReferenceExpression.getReferenceNameElement() != null) {
  51       if (!CreateFromUsageUtils.isValidReference(myReferenceExpression, true)) {
  52         return myReferenceExpression;
  53       }
  54     }
  55
  56     return null;
  57   }
  58
  59   protected boolean isAvailableImpl(int offset) {
  60     if (CreateFromUsageUtils.shouldShowTag(offset, myReferenceExpression.getReferenceNameElement(), myReferenceExpression)) {
  61       setText(getText(myReferenceExpression.getReferenceName()));
  62       return true;
  63     }
  64
  65     return false;
  66   }
  67
  68   protected abstract String getText(String varName);
  69 }