LoginActivity.java

/**
 * Copyright (C) 2011 Adriano Monteiro Marques
 *
 * Author:  Zubair Nabi <zn.zubairnabi@gmail.com>
 *
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */
	
package org.umit.icm.mobile.gui;
	
	
import java.io.IOException;

import org.umit.icm.mobile.Main;
import org.umit.icm.mobile.R;
import org.umit.icm.mobile.gui.debug.Show;
import org.umit.icm.mobile.process.Constants;
import org.umit.icm.mobile.process.Globals;
import org.umit.icm.mobile.process.Initialization;
import org.umit.icm.mobile.proto.MessageProtos.LoginCredentials;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;


public class LoginActivity extends Activity {
	
    private EditText etUsername;
    private EditText etPassword;
    private Button buttonSet;
    private Button registerButton;
    ProgressDialog progressDialog;    
    private Context context;
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Initialization.initializeIP(this);
        setContentView(R.layout.logindialog);
        buttonSet = (Button) findViewById(R.id.loginButton);
        buttonSet.setOnClickListener(new intervalListener());
        registerButton = (Button)findViewById(R.id.registerButton);
        registerButton.setOnClickListener(new intervalListener());
        etUsername = (EditText) findViewById(R.id.etUsername);                           
        etPassword = (EditText) findViewById(R.id.etPassword);
        context = this;
        etUsername.requestFocus();
    }
        
    private class intervalListener implements android.view.View.OnClickListener {

		@Override
		public void onClick(View arg0) {
			switch (arg0.getId()){
			case R.id.loginButton:
			if (etUsername.getText().toString().equals("")) {
				CharSequence text = getString(R.string.username);
        		int duration = Toast.LENGTH_SHORT;

        		Toast toast = Toast.makeText(getApplicationContext(), text, duration);
        		toast.show(); 
			} else if (etPassword.getText().toString().equals("")) {
				CharSequence text = getString(R.string.password);
        		int duration = Toast.LENGTH_SHORT;

        		Toast toast = Toast.makeText(getApplicationContext(), text, duration);
        		toast.show(); 
			} else {
				progressDialog = ProgressDialog.show(context, "", getString(R.string.logging_in), true, false);
				progressDialog.show();
					
				String login = etUsername.getText().toString();
				String password = etPassword.getText().toString();
								
				LoginCredentials loginCredentials = LoginCredentials.newBuilder()
				.setUsername(login)
				.setPassword(password)
				.build();			
				
				Initialization.checkProfiler();		
				try {
					Initialization.checkFiles();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (RuntimeException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				
				new BackgroundLogin().execute(loginCredentials);
							
			}
			break;
			
			case R.id.registerButton:
				Intent i = new Intent(Intent.ACTION_VIEW, 
					       Uri.parse(Constants.AGGREGATOR_URL + Constants.AGGR_REGISTER_USER));
			
				startActivity(i);
				finish();
				break;
			}               		
		}			

    }   
    
    
    private class BackgroundLogin extends AsyncTask<LoginCredentials,String,String> {

		@Override
		protected String doInBackground(LoginCredentials... loginCredentials) {
			publishProgress(getString(R.string.registering));
			boolean register = Initialization.registration(loginCredentials[0]);
			if(register) {
				publishProgress(getString(R.string.registration_complete));
				publishProgress(getString(R.string.logging_in));
				boolean login = Initialization.login();
				if(login) {
					publishProgress(getString(R.string.login_complete));
				} else {
					publishProgress(getString(R.string.login_failed));
					this.cancel(true);
				}
			} else{
				publishProgress(getString(R.string.registration_failed));
				this.cancel(true);
			}
			
			return null;
		}
		
		protected void onProgressUpdate(String... string) {
			progressDialog.setMessage(string[0]);
			if(string[0].equalsIgnoreCase(getString(R.string.registration_failed))){
				Show.Error((Activity)context, string[0]);
				this.cancel(true);
			}else if(string[0].equalsIgnoreCase(getString(R.string.login_failed))){
				Show.Error((Activity)context, string[0]);
				this.cancel(true);
			}
	     }
    	
		protected void onPostExecute(String result) {
			progressDialog.dismiss();
			if(!isCancelled()){
				Intent intent = new Intent(LoginActivity.this, Main.class);
				startActivity(intent);
				finish();	
			}
			
	     }
		
		protected void onCancelled() {
			progressDialog.dismiss();
	     }
    	
    }
            
}