java/java-impl/src/com/intellij/codeInsight/daemon/impl/quickfix/InsertNewFix.java

/*
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @author cdr
 */
package com.intellij.codeInsight.daemon.impl.quickfix;

import com.intellij.codeInsight.FileModificationService;
import com.intellij.codeInsight.daemon.QuickFixBundle;
import com.intellij.codeInsight.intention.IntentionAction;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.*;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;

public class InsertNewFix implements IntentionAction {
  private final PsiMethodCallExpression myMethodCall;
  private final PsiClass myClass;

  public InsertNewFix(@NotNull PsiMethodCallExpression methodCall, @NotNull PsiClass aClass) {
    myMethodCall = methodCall;
    myClass = aClass;
  }

  @Override
  @NotNull
  public String getText() {
    return QuickFixBundle.message("insert.new.fix");
  }

  @Override
  @NotNull
  public String getFamilyName() {
    return getText();
  }

  @Override
  public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) {
    return myMethodCall.isValid() && myMethodCall.getManager().isInProject(myMethodCall);
  }

  @Override
  public void invoke(@NotNull Project project, Editor editor, PsiFile file) throws IncorrectOperationException {
    if (!FileModificationService.getInstance().prepareFileForWrite(myMethodCall.getContainingFile())) return;
    PsiElementFactory factory = JavaPsiFacade.getInstance(myMethodCall.getProject()).getElementFactory();
    PsiNewExpression newExpression = (PsiNewExpression)factory.createExpressionFromText("new X()",null);

    PsiJavaCodeReferenceElement classReference = newExpression.getClassReference();
    assert classReference != null;
    classReference.replace(factory.createClassReferenceElement(myClass));
    PsiExpressionList argumentList = newExpression.getArgumentList();
    assert argumentList != null;
    argumentList.replace(myMethodCall.getArgumentList());
    myMethodCall.replace(newExpression);
  }

  @Override
  public boolean startInWriteAction() {
    return true;
  }
}