platform/lang-api/src/com/intellij/refactoring/util/DocCommentPolicy.java

/*
 * Copyright 2000-2013 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.
 */

/*
 * Created by IntelliJ IDEA.
 * User: dsl
 * Date: 30.05.2002
 * Time: 19:24:56
 * To change template for new class use 
 * Code Style | Class Templates options (Tools | IDE Options).
 */
package com.intellij.refactoring.util;

import com.intellij.psi.PsiComment;
import com.intellij.util.IncorrectOperationException;

public class DocCommentPolicy<T extends PsiComment> {
  public static final int ASIS = 0;
  public static final int MOVE = 1;
  public static final int COPY = 2;

  private final int myJavaDocPolicy;

  public DocCommentPolicy(int javaDocPolicy) {
    myJavaDocPolicy = javaDocPolicy;
  }

  public void processCopiedJavaDoc(T newDocComment, T docComment, boolean willOldBeDeletedAnyway)
          throws IncorrectOperationException{
    if(myJavaDocPolicy == COPY || docComment == null) return;

    if(myJavaDocPolicy == MOVE) {
      docComment.delete();
    }
    else if(myJavaDocPolicy == ASIS && newDocComment != null && !willOldBeDeletedAnyway) {
      newDocComment.delete();
    }
  }

  public void processNewJavaDoc(T newDocComment) throws IncorrectOperationException {
    if(myJavaDocPolicy == ASIS && newDocComment != null) {
      newDocComment.delete();
    }
  }

  public void processOldJavaDoc(T oldDocComment) throws IncorrectOperationException {
    if(myJavaDocPolicy == MOVE && oldDocComment != null) {
      oldDocComment.delete();
    }
  }

  public int getJavaDocPolicy() {
    return myJavaDocPolicy;
  }
}