Android Open Source - commotion-android Links Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 *  This file is part of Commotion Mesh Tether
 *  Copyright (C) 2010 by Szymon Jakubczak
 */*from   w w  w  .  ja v a2s . co m*/
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package net.commotionwireless.meshtether;

import java.util.ArrayList;

import net.commotionwireless.meshtether.MeshService.ClientData;
import net.commotionwireless.olsrinfo.datatypes.HNA;
import net.commotionwireless.olsrinfo.datatypes.Link;
import net.commotionwireless.olsrinfo.datatypes.OlsrDataDump;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.TextView;

public class LinksActivity extends android.app.ListActivity {
  private MeshTetherApp app;
  private BaseAdapter adapter;
  private ArrayList<MeshService.ClientData> clients = new ArrayList<MeshService.ClientData>();

  private OlsrInfoThread mOlsrInfoThread;
  boolean mPauseOlsrInfoThread = false;
  private final Handler mHandler = new Handler();

  private static class ViewHolder {
    TextView remoteIP;
    ProgressBar lqBar;
    ProgressBar nlqBar;
    LinearLayout idrow;
    ImageView defaultRouteIcon;
    ImageView otherRouteIcon;
  }

  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    app = (MeshTetherApp)getApplication();
    app.setLinksActivity(this);

    adapter = new BaseAdapter(){
      @Override
      public int getCount() { return clients.size(); }
      @Override
      public Object getItem(int position) { return clients.get(position); }
      @Override
      public long getItemId(int position) { return position; }

      @Override
      public View getView(int position, View convertView, ViewGroup parent) {
        final MeshService.ClientData client = clients.get(position);

        ViewHolder holder;

        if (convertView == null) {
          View view = getLayoutInflater().inflate(R.layout.linkrow, null);
          holder = new ViewHolder();
          holder.remoteIP = (TextView) view.findViewById(R.id.remoteip);
          holder.lqBar = (ProgressBar) view.findViewById(R.id.linkquality);
          holder.nlqBar = (ProgressBar) view.findViewById(R.id.neighborlinkquality);
          holder.idrow = (LinearLayout) view.findViewById(R.id.idrow);
          holder.defaultRouteIcon = new ImageView(getBaseContext());
          holder.defaultRouteIcon.setId(R.drawable.default_route);
          holder.defaultRouteIcon.setImageResource(R.drawable.default_route);
          holder.otherRouteIcon = new ImageView(getBaseContext());
          holder.otherRouteIcon.setId(R.drawable.other_route);
          holder.otherRouteIcon.setImageResource(R.drawable.other_route);
          view.setTag(holder);
          view.setClickable(false);
          convertView = view;
        } else {
          holder = (ViewHolder) convertView.getTag();
        }

        holder.remoteIP.setText(client.remoteIP);
        holder.lqBar.setProgress((int)(client.linkQuality * 100));
        holder.nlqBar.setProgress((int)(client.neighborLinkQuality * 100));

        if (client.hasDefaultRoute) {
          if(holder.idrow.findViewById(R.drawable.default_route) == null)
            holder.idrow.addView(holder.defaultRouteIcon);
        } else {
          holder.idrow.removeView(holder.defaultRouteIcon);
        }
        if (client.hasRouteToOther) {
          if(holder.idrow.findViewById(R.drawable.other_route) == null)
            holder.idrow.addView(holder.otherRouteIcon);
        } else {
          holder.idrow.removeView(holder.otherRouteIcon);
        }
        return convertView;
      }
    };
    setListAdapter(adapter);
    setTitle(getString(R.string.clientview));

    mOlsrInfoThread = new OlsrInfoThread();
    mOlsrInfoThread.start();
  }

  @Override
  protected void onDestroy() {
    super.onDestroy();
    mOlsrInfoThread.interrupt();
    mOlsrInfoThread = null;
    app.setLinksActivity(null);
  }

  @Override
  protected void onResume() {
    super.onResume();
    app.cancelClientNotify();
    update();

    if (hasWindowFocus() && clients.isEmpty())
      app.updateToast(getString(R.string.noclients), false);
    mPauseOlsrInfoThread = false;
  }

  @Override
  protected void onPause() {
    super.onPause();
    mPauseOlsrInfoThread = true;
  }

  public void update() {
    if (app.service != null)
      clients = app.service.clients;
    adapter.notifyDataSetChanged();
  }

  class OlsrInfoThread extends Thread {

    @Override
    public void run() {
      ArrayList<MeshService.ClientData> clientsToAdd = new ArrayList<MeshService.ClientData>();
      try {
        while(true) {
          OlsrDataDump dump = app.mJsonInfo.parseCommand("/links/hna");
          for (Link l : dump.links) {
            MeshService.ClientData c = new MeshService.ClientData(l.remoteIP, l.linkQuality,
                l.neighborLinkQuality, l.linkCost, l.validityTime);
            for (HNA h : dump.hna) {
              if (l.remoteIP.equals(h.gateway))
                if (h.genmask == 0)
                  c.hasDefaultRoute = true;
                else
                  c.hasRouteToOther = true;
            }
            clientsToAdd.add(c);
          }
          final ArrayList<MeshService.ClientData> updateList = new ArrayList<MeshService.ClientData>(clientsToAdd);
          mHandler.post(new Runnable() {
            @Override
            public void run() {
              for (MeshService.ClientData cd : updateList) {
                clientAdded(cd);
              }
            }
          });
          while (mPauseOlsrInfoThread)
            Thread.sleep(500);
          Thread.sleep(5000);
        }
      } catch (InterruptedException e) {
        // fall through
      }
    }
  }

  private void clientAdded(ClientData cd) {

    for (int i = 0; i < clients.size(); ++i) {
      ClientData c = clients.get(i);
      if (c.remoteIP.equals(cd.remoteIP)) {
        if (c.hasRouteToOther == cd.hasRouteToOther
            && c.hasDefaultRoute == cd.hasDefaultRoute
            && c.linkQuality == cd.linkQuality
            && c.neighborLinkQuality == cd.neighborLinkQuality) {
          return; // no change
        }
        clients.remove(i); // we'll add it at the end
        break;
      }
    }
    clients.add(cd);
    app.clientAdded(cd);
  }

}

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