Android Open Source - ubihelper Logging Channel List Activity

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Back to project page ubihelper.

License

The source code is released under:

GNU General Public License

Java Source Code

/**
 * Copyright (c) 2012 The University of Nottingham
 * /*w w  w .j  a  va2s .  co  m*/
 * This file is part of ubihelper
 *
 *  ubihelper is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  ubihelper 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 Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with ubihelper. If not, see <http://www.gnu.org/licenses/>.
 *  
 *  @author Chris Greenhalgh (cmg@cs.nott.ac.uk), The University of Nottingham
 */
package uk.ac.horizon.ubihelper.ui;

import java.util.Collections;
import java.util.TreeSet;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import uk.ac.horizon.ubihelper.R;
import uk.ac.horizon.ubihelper.channel.ChannelManager;
import uk.ac.horizon.ubihelper.protocol.PeerInfo;
import uk.ac.horizon.ubihelper.service.BroadcastIntentSubscription;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.CompoundButton.OnCheckedChangeListener;

/**
 * @author cmg
 *
 */
public class LoggingChannelListActivity extends ChannelViewActivity {
  private ListView listView;
  private ArrayAdapter<String> listAdapter;
  private SharedPreferences prefs ;
  static final String LOG_CHANNELS_PREFERENCE = "log_channels";
  
  public static Intent getStartActivityIntent(Context context) {
    Intent i = new Intent(context, LoggingChannelListActivity.class);
  //  i.putExtra(BroadcastIntentSubscription.EXTRA_NAME, ChannelManager.CHANNEL_CHANNELS);
    return i;
  }
  
  @Override
  protected String getChannelName() {
    return ChannelManager.CHANNEL_CHANNELS;
  }

  /* (non-Javadoc)
   * @see android.app.Activity#onCreate(android.os.Bundle)
   */
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.log_channel_list);
    listView = (ListView)findViewById(R.id.log_channel_list);
    
    prefs = PreferenceManager.getDefaultSharedPreferences(this);

    final OnCheckedChangeListener enableListener = new OnCheckedChangeListener() {
      public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        String cn= (String)buttonView.getTag();
        Log.d(TAG,"onCheckedChanged "+cn+" -> "+isChecked);
        // TODO - update preference
        if (isChecked && !isLogChannel(cn))
          enableChannel(cn);
        else if (!isChecked && isLogChannel(cn))
          disableChannel(cn);
        
      }
    };
    //listAdapter = new ArrayAdapter<String>(this, R.layout.channel_list_item);
    listAdapter = new ArrayAdapter<String>(this, R.layout.log_channel_item, R.id.log_channel_item_name) {
      @Override 
      public View getView(int position, View convertView, ViewGroup parent) {
        View v = convertView;
        if (v==null) {
          v = LoggingChannelListActivity.this.getLayoutInflater().inflate(R.layout.log_channel_item, null);
        }
        String cn = getItem(position);
        CheckBox enabled = (CheckBox)v.findViewById(R.id.log_channel_item_enabled);
        enabled.setTag(cn);
        enabled.setChecked(isLogChannel(cn));
        enabled.setOnCheckedChangeListener(enableListener);
        TextView name = (TextView)v.findViewById(R.id.log_channel_item_name);
        name.setText(cn);
        //TextView description = (TextView)v.findViewById(R.id.peer_item_description);
        //description.setText(pi.trusted ? "Trusted peer" : "Untrusted peer");
        v.setClickable(true);
        v.setTag(cn);
        //v.setOnClickListener(clickListener);
        return v;
      }      
    };
    listView.setAdapter(listAdapter);
    
  }

  protected void disableChannel(String dcn) {
    String cns [] = prefs.getString(LOG_CHANNELS_PREFERENCE, "").split(";");
    StringBuilder sb = new StringBuilder();
    for (int i=0; i<cns.length; i++) {
      String cn = cns[i];
      if (cn.length()==0)
        continue;
      if (cn.equals(dcn))
        continue;
      if (sb.length()>0)
        sb.append(";");
      sb.append(cn);
    }
    prefs.edit().putString(LOG_CHANNELS_PREFERENCE, sb.toString()).commit();  
  }

  protected void enableChannel(String cn) {
    String cns = prefs.getString(LOG_CHANNELS_PREFERENCE, "");
    if (cns.length()==0)
      prefs.edit().putString(LOG_CHANNELS_PREFERENCE, cn).commit();
    else
      prefs.edit().putString(LOG_CHANNELS_PREFERENCE, cns+";"+cn).commit();
  }

  protected boolean isLogChannel(String cn) {
    String cns [] = prefs.getString(LOG_CHANNELS_PREFERENCE, "").split(";");
    for (int i=0; i<cns.length; i++) 
      if (cns[i].equals(cn))
        return true;
    return false;
  }

  @Override
  protected void refresh(Intent intent) {
    listAdapter.clear();
    if (intent!=null) {
      String value= intent.getExtras().getString(BroadcastIntentSubscription.EXTRA_VALUE);
      if (value!=null) {
        try {
          JSONObject val = new JSONObject(value);
          JSONArray names = val.getJSONArray(ChannelManager.KEY_NAMES);
          TreeSet<String> nameset = new TreeSet<String>();
          for (int i=0; i<names.length(); i++) 
            nameset.add(names.getString(i));
          for (String name : nameset) 
            listAdapter.add(name);
        } catch (JSONException e) {
          Log.w(TAG,"Parsing channels value "+value+": "+e);
        }
      }
    }
  }


}

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