ch.bfh.instacircle.ParticipantDetailFragment.java Source code

Introduction

Here is the source code for ch.bfh.instacircle.ParticipantDetailFragment.java

Source

/*
 *  UniCrypt Cryptographic Library
 *  Copyright (c) 2013 Berner Fachhochschule, Biel, Switzerland.
 *  All rights reserved.
 *
 *  Distributable under GPL license.
 *  See terms of license at gnu.org.
 *  
 */

package ch.bfh.instacircle;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.content.LocalBroadcastManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.GridLayout;
import android.widget.TextView;
import ch.bfh.instacircle.db.NetworkDbHelper;

/**
 * Fragment which is embedded in the ParticipantDetailActivity. It displays
 * information of a participant.
 * 
 * @author Juerg Ritter (rittj1@bfh.ch)
 */
public class ParticipantDetailFragment extends Fragment implements ParticipantsListFragment.Callbacks {

    private GridLayout layout;
    private TextView participantIdentification;
    private TextView participantIpAddress;
    private TextView participantStatus;
    private TextView participantSequenceNumber;

    private int participantId;
    private NetworkDbHelper dbHelper;

    /*
     * (non-Javadoc)
     * 
     * @see android.support.v4.app.Fragment#onCreate(android.os.Bundle)
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Subscibing to the participantJoined and participantChangedState
        // events to update immediately
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction("messageArrived");
        intentFilter.addAction("participantChangedState");
        LocalBroadcastManager.getInstance(getActivity()).registerReceiver(mMessageReceiver, intentFilter);

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        // applying the layout
        View rootView = inflater.inflate(R.layout.fragment_participant_detail, container, false);

        return rootView;
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

        // getting access to the Database
        dbHelper = NetworkDbHelper.getInstance(getActivity());

        participantId = getActivity().getIntent().getIntExtra("participant_id", -1);

        layout = (GridLayout) getView().findViewById(R.id.participant_detail_layout);

        participantIdentification = (TextView) layout.findViewById(R.id.participant_identification);
        participantIpAddress = (TextView) layout.findViewById(R.id.participant_ip_address);
        participantStatus = (TextView) layout.findViewById(R.id.participant_status);
        participantSequenceNumber = (TextView) layout.findViewById(R.id.participant_sequence_number);

        updateView();
    }

    /**
     * Query the database and updates the labels in the view accordingly
     */
    private void updateView() {

        Cursor participant = dbHelper.queryParticipant(participantId);
        participant.moveToFirst();

        participantIdentification.setText(participant.getString(participant.getColumnIndex("identification")));
        participantIpAddress.setText(participant.getString(participant.getColumnIndex("ip_address")));

        // use some pretty colours to display the state
        switch (participant.getInt(participant.getColumnIndex("state"))) {
        case 0:
            participantStatus
                    .setTextColor(getActivity().getResources().getColor(android.R.color.holo_orange_light));
            participantStatus.setText("inactive");
            break;
        case 1:
            participantStatus.setTextColor(getActivity().getResources().getColor(android.R.color.holo_green_light));
            participantStatus.setText("active");
            break;
        default:
            participantStatus.setTextColor(getActivity().getResources().getColor(android.R.color.holo_red_light));
            participantStatus.setText("unknown");
            break;
        }

        // get the sequencenumber and displaying it
        participantSequenceNumber.setText("" + dbHelper.getCurrentParticipantSequenceNumber(
                participant.getString(participant.getColumnIndex("identification"))));
    }

    /*
     * (non-Javadoc)
     * 
     * @see android.support.v4.app.Fragment#onDestroy()
     */
    @Override
    public void onDestroy() {
        // Unregister since the activity is about to be closed.
        LocalBroadcastManager.getInstance(getActivity()).unregisterReceiver(mMessageReceiver);
        super.onDestroy();
    }

    /**
     * if there is the new participant or the state of a participant has been
     * changed we need to update the view
     */
    private BroadcastReceiver mMessageReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            updateView();
        }
    };

    /*
     * (non-Javadoc)
     * 
     * @see
     * ch.bfh.instacircle.ParticipantsListFragment.Callbacks#onItemSelected(
     * java.lang.String)
     */
    public void onItemSelected(String id) {

    }
}