Android Open Source - saostar Timeline Item Collection

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License

The source code is released under:

Apache License

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Java Source Code

package net.azyobuzi.azyotter.saostar.timeline_data;
// w  w w.  jav a  2s . co  m
import java.util.ArrayList;
import java.util.HashMap;

import net.azyobuzi.azyotter.saostar.linq.Enumerable;
import net.azyobuzi.azyotter.saostar.system.Action1;

public class TimelineItemCollection {
  private static final HashMap<TimelineItemId, TimelineItem> dic = new HashMap<TimelineItemId, TimelineItem>();
  private static final Object lockObj = new Object();

  public static Enumerable<TimelineItem> getEnumerable() {
    synchronized (lockObj) {
      return Enumerable.from(dic.values().toArray()).cast();
    }
  }

  public static final ArrayList<Action1<TimelineItem>> addedHandler = new ArrayList<Action1<TimelineItem>>();

  private static TimelineItem raiseAdded(TimelineItem item) {
    for (Action1<TimelineItem> handler : addedHandler) {
      handler.invoke(item);
    }
    return item;
  }

  public static final ArrayList<Action1<TimelineItem>> removedHandler = new ArrayList<Action1<TimelineItem>>();

  private static TimelineItem raiseRemoved(TimelineItem item) {
    for (Action1<TimelineItem> handler : removedHandler) {
      handler.invoke(item);
    }
    return item;
  }

  public static TimelineItem addOrMerge(twitter4j.Status source, boolean isHomeTweet) {
    synchronized (lockObj) {
      TimelineItemId key = new TimelineItemId(TimelineItemId.TYPE_TWEET, source.getId());
      if (dic.containsKey(key)) {
        TimelineItem re = dic.get(key);
        re.merge(source, isHomeTweet);
        return re;
      } else {
        TimelineItem re = TimelineItem.create(source, isHomeTweet);
        dic.put(key, re);
        return raiseAdded(re);
      }
    }
  }

  public static TimelineItem get(TimelineItemId id) {
    synchronized (lockObj) {
      return dic.get(id);
    }
  }

  public static TimelineItem getTweet(long id) {
    synchronized (lockObj) {
      return dic.get(new TimelineItemId(TimelineItemId.TYPE_TWEET, id));
    }
  }

  public static void removeTweet(long id) {
    synchronized (lockObj) {
      raiseRemoved(dic.remove(new TimelineItemId(TimelineItemId.TYPE_TWEET, id)));
    }
  }

  public static TimelineItem addOrMerge(twitter4j.DirectMessage source) {
    synchronized (lockObj) {
      TimelineItemId key = new TimelineItemId(TimelineItemId.TYPE_DIRECT_MESSAGE, source.getId());
      if (dic.containsKey(key)) {
        TimelineItem re = dic.get(key);
        re.merge(source);
        return re;
      } else {
        TimelineItem re = TimelineItem.create(source);
        dic.put(key, re);
        return raiseAdded(re);
      }
    }
  }

  public static TimelineItem getDirectMessage(long id) {
    synchronized (lockObj) {
      return dic.get(new TimelineItemId(TimelineItemId.TYPE_DIRECT_MESSAGE, id));
    }
  }

  public static void removeDirectMessage(long id) {
    synchronized (lockObj) {
      raiseRemoved(dic.remove(new TimelineItemId(TimelineItemId.TYPE_DIRECT_MESSAGE, id)));
    }
  }
}

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