Android Open Source - DistributedMemory Host State Transition

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Back to project page DistributedMemory.

License

The source code is released under:

Apache License

Java Source Code

package org.faudroids.distributedmemory.core;
/* w w  w  .j  av  a  2 s.co m*/
import android.os.Handler;
import android.os.Looper;

import org.faudroids.distributedmemory.network.BroadcastMessage;

/**
 * Manages the transition from one state to another by processing acks and setting
 * the new state once all clients have acknowledge the new state.
 */
final class HostStateTransition {

  // Used to postpone callbacks to the listener
  private static final Handler handler = new Handler(Looper.myLooper());

  private final HostStateTransitionListener transitionListener;
  private final GameState nextState;
  private final BroadcastMessage<?> broadcastMessage;

  public HostStateTransition(HostStateTransitionListener transitionListener, GameState nextState, BroadcastMessage<?> broadcastMessage) {
    this.transitionListener = transitionListener;
    this.nextState = nextState;
    this.broadcastMessage = broadcastMessage;
  }


  public void startTransition() {
    broadcastMessage.sendMessage();
  }


  public boolean onAckReceived() {
    boolean allAcksReceived = broadcastMessage.onAckReceived();
    if (allAcksReceived) handler.post(new Runnable() {
      @Override
      public void run() {
        transitionListener.onTransitionFinished(nextState);
      }
    });
    return allAcksReceived;
  }


  public boolean isComplete() {
    return broadcastMessage.allAcksReceived();
  }


}

Java Source Code List

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