Android Open Source - mha-android Node Manager

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License

The source code is released under:

Copyright (c) 2011-2012 Cameron Porter, Ryan Brown http://github.com/camporter/mha-android Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated...

Java Source Code

package com.teamacra.myhomeaudio.manager;
//  w  w w .  ja v a  2s. c  om
import java.util.ArrayList;
import java.util.Iterator;

import android.util.Log;

import com.teamacra.myhomeaudio.MHAApplication;
import com.teamacra.myhomeaudio.http.HttpNode;
import com.teamacra.myhomeaudio.node.Node;

public class NodeManager {

  private ArrayList<Node> nodeList;
  private HttpNode httpNode;

  private static final String TAG = "NodeManager";
  private static NodeManager instance;

  private NodeManager(MHAApplication app) {
    httpNode = new HttpNode(app);
    nodeList = new ArrayList<Node>();
  }

  public synchronized static NodeManager getInstance(MHAApplication app) {
    if (instance == null) {
      instance = new NodeManager(app);
    }
    return instance;
  }

  /**
   * Updates the list of node objects.
   * 
   * @return Whether the node list update succeeded.
   */
  public synchronized boolean updateNodes() {

    ArrayList<Node> newNodeList = httpNode.getNodes();

    if (newNodeList != null) {
      nodeList = newNodeList;
      return true;
    }

    return false;
  }

  public synchronized boolean updateConfiguration(
      ArrayList<Node> newConfiguration) {
    return false;

  }

  /**
   * Gets a list of Node objects.
   * <p>
   * Note, this doesn't automatically update from the server.
   * 
   * @param onlyActive
   *            Whether to return only nodes that are currently active.
   * 
   * @return ArrayList of Node within manager
   */
  public ArrayList<Node> getNodeList(boolean onlyActive) {
    updateNodes();
    if (onlyActive) {
      ArrayList<Node> activeList = new ArrayList<Node>();
      for (Iterator<Node> i = nodeList.iterator(); i.hasNext();) {
        Node nextNode = i.next();
        if (nextNode.isActive()) {
          activeList.add(nextNode);
        }
      }
      return activeList;
    } else {
      Log.d(TAG, "Returning NodeList, size =" + nodeList.size());
      return new ArrayList<Node>(nodeList);
    }
  }

  /**
   * Get a Node by its id.
   * 
   * @param id
   *            The id of the Node.
   * @return The Node object, or null if a matching node is not found.
   */
  public Node getNode(int id) {
    updateNodes();
    for (Iterator<Node> i = nodeList.iterator(); i.hasNext();) {
      Node nextNode = i.next();
      if (nextNode.id() == id) {
        return nextNode;
      }
    }
    return null;
  }
  
  /**
   * Get a Node by its name, address, and whether it is active.
   * 
   * @param name The name of the node.
   * @param bluetoothAddress The bluetooth address of the node.
   * @param isActive Whether the node is active.
   * @return The Node object, or null if a matching node is not found.
   */
  public Node getNode(String name, String bluetoothAddress, boolean isActive) {
    //updateNodes();
    for (Iterator<Node> i = nodeList.iterator(); i.hasNext();) {
      Node nextNode = i.next();
      if (nextNode.name().equals(name)
          && nextNode.bluetoothAddress().equals(bluetoothAddress)
          && (nextNode.isActive() == isActive)) {
        return nextNode;
      }
    }
    return null;
  }
  
  public void forceUpdateNodes(){
    while(!updateNodes());
  }
  
  /**
   * Makes sure that the exact same Node instance exists in the node manager.
   * 
   * @param node 
   * @return
   */
  public boolean nodeExists(Node node) {
    for (Iterator<Node> i = nodeList.iterator(); i.hasNext();) {
      if (i.next() == node) {
        return true;
      }
    }
    return false;
  }

}

Java Source Code List

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