/*
 * 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.
 */
package com.intellij.refactoring.extractclass.usageInfo;

import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiReferenceExpression;
import com.intellij.refactoring.psi.MutationUtils;
import com.intellij.refactoring.util.FixableUsageInfo;
import com.intellij.util.IncorrectOperationException;

public class ReplaceInstanceVariableAccess extends FixableUsageInfo {
    private final PsiReferenceExpression expression;
    private final String fieldName;
    private final String getterName;
    private final String delegateName;

    public ReplaceInstanceVariableAccess(PsiReferenceExpression expression, String delegateName, String getterName, String name) {
        super(expression);
        this.getterName = getterName;
        this.delegateName = delegateName;
        this.expression = expression;
        fieldName = name;
    }

    @Override
    public void fixUsage() throws IncorrectOperationException {
        final PsiElement qualifier = expression.getQualifier();
        final String callString = delegateName + '.' + (getterName != null ? getterName + "()" : fieldName);
        if (qualifier != null) {
            final String qualifierText = qualifier.getText();
            MutationUtils.replaceExpression(qualifierText + '.' + callString, expression);
        } else {
            MutationUtils.replaceExpression(callString, expression);
        }
    }
}
