FileEntry.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.
 */

package com.intellij.history.core.tree;

import com.intellij.history.core.Content;
import com.intellij.history.core.StoredContent;
import com.intellij.history.core.revisions.Difference;
import org.jetbrains.annotations.NotNull;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.List;

public class FileEntry extends Entry {
  private long myTimestamp;
  private boolean isReadOnly;
  private Content myContent;

  public FileEntry(int nameId, Content content, long timestamp, boolean isReadOnly) {
    super(nameId);
    myTimestamp = timestamp;
    this.isReadOnly = isReadOnly;
    myContent = content;
  }

  public FileEntry(String name, Content content, long timestamp, boolean isReadOnly) {
    this(toNameId(name), content, timestamp, isReadOnly);
  }

  public FileEntry(DataInput in, boolean dummy /* to distinguish from general constructor*/) throws IOException {
    super(in);
    myTimestamp = in.readLong();
    isReadOnly = in.readBoolean();
    myContent = new StoredContent(in);
  }

  @Override
  public void write(DataOutput out) throws IOException {
    super.write(out);
    out.writeLong(myTimestamp);
    out.writeBoolean(isReadOnly);
    myContent.write(out);
  }

  @Override
  public long getTimestamp() {
    return myTimestamp;
  }

  @Override
  public boolean isReadOnly() {
    return isReadOnly;
  }

  @Override
  public void setReadOnly(boolean isReadOnly) {
    this.isReadOnly = isReadOnly;
  }

  @Override
  public Content getContent() {
    return myContent;
  }

  @Override
  public boolean hasUnavailableContent(List<Entry> entriesWithUnavailableContent) {
    if (myContent.isAvailable()) return false;
    entriesWithUnavailableContent.add(this);
    return true;
  }

  @NotNull
  @Override
  public FileEntry copy() {
    return new FileEntry(getNameId(), myContent, myTimestamp, isReadOnly);
  }

  @Override
  public void setContent(Content newContent, long newTimestamp) {
    myContent = newContent;
    myTimestamp = newTimestamp;
  }

  @Override
  public void collectDifferencesWith(Entry e, List<Difference> result) {
    if (getPath().equals(e.getPath())
        && myContent.equals(e.getContent())
        && isReadOnly == e.isReadOnly()) return;
    
    result.add(new Difference(true, this, e));
  }

  @Override
  protected void collectCreatedDifferences(List<Difference> result) {
    result.add(new Difference(true, null, this));
  }

  @Override
  protected void collectDeletedDifferences(List<Difference> result) {
    result.add(new Difference(true, this, null));
  }
}