content: /*
   * Copyright (C) 2017 The Android Open Source Project
   *
   * 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.google.android.exoplayer2.source;
  
  import com.google.android.exoplayer2.Player;
  import com.google.android.exoplayer2.Timeline;
  
  /**
   * An overridable {@link Timeline} implementation forwarding all methods to another timeline.
   */
  public abstract class ForwardingTimeline extends Timeline {
  
    protected final Timeline timeline;
  
    public ForwardingTimeline(Timeline timeline) {
      this.timeline = timeline;
    }
  
    @Override
    public int getWindowCount() {
      return timeline.getWindowCount();
    }
  
    @Override
    public int getNextWindowIndex(int windowIndex, @Player.RepeatMode int repeatMode,
        boolean shuffleModeEnabled) {
      return timeline.getNextWindowIndex(windowIndex, repeatMode, shuffleModeEnabled);
    }
  
    @Override
    public int getPreviousWindowIndex(int windowIndex, @Player.RepeatMode int repeatMode,
        boolean shuffleModeEnabled) {
      return timeline.getPreviousWindowIndex(windowIndex, repeatMode, shuffleModeEnabled);
    }
  
    @Override
    public int getLastWindowIndex(boolean shuffleModeEnabled) {
      return timeline.getLastWindowIndex(shuffleModeEnabled);
    }
  
    @Override
    public int getFirstWindowIndex(boolean shuffleModeEnabled) {
      return timeline.getFirstWindowIndex(shuffleModeEnabled);
    }
  
    @Override
    public Window getWindow(int windowIndex, Window window, boolean setIds,
        long defaultPositionProjectionUs) {
      return timeline.getWindow(windowIndex, window, setIds, defaultPositionProjectionUs);
    }
  
    @Override
    public int getPeriodCount() {
      return timeline.getPeriodCount();
    }
  
    @Override
    public Period getPeriod(int periodIndex, Period period, boolean setIds) {
      return timeline.getPeriod(periodIndex, period, setIds);
    }
  
    @Override
    public int getIndexOfPeriod(Object uid) {
      return timeline.getIndexOfPeriod(uid);
    }
  
  }
  