/*
 * 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.
 */
package com.intellij.refactoring.listeners;

import com.intellij.openapi.util.Key;
import com.intellij.openapi.util.UserDataHolder;
import com.intellij.openapi.util.UserDataHolderBase;
import com.intellij.psi.PsiElement;
import com.intellij.usageView.UsageInfo;
import com.intellij.util.Function;
import com.intellij.util.containers.HashMap;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;

public class RefactoringEventData extends UserDataHolderBase {
  public static final Key<Collection<? extends String>> CONFLICTS_KEY = Key.create("conflicts");
  public static final Key<PsiElement> PSI_ELEMENT_KEY = Key.create("element");
  public static final Key<PsiElement[]> PSI_ELEMENT_ARRAY_KEY = Key.create("elementArray");
  public static final Key<Collection<UsageInfo>> USAGE_INFOS_KEY = Key.create("usageInfos");

  public void addElement(PsiElement element) {
    putUserData(PSI_ELEMENT_KEY, element);
  }

  public <T> void addMembers(T[] members, Function<T, PsiElement> converter) {
    List<PsiElement> elements = new ArrayList<PsiElement>();
    for (T info : members) {
      elements.add(converter.fun(info));
    }
    addElements(elements);
  }
  
  public void addElements(Collection<PsiElement> elements) {
    putUserData(PSI_ELEMENT_ARRAY_KEY, elements.toArray(new PsiElement[elements.size()]));
  }
  
  public void addElements(PsiElement[] elements) {
    putUserData(PSI_ELEMENT_ARRAY_KEY, elements);
  }

  public void addUsages(Collection<UsageInfo> usageInfos) {
    putUserData(USAGE_INFOS_KEY, usageInfos);
  }
}