Android Open Source - intelligent-lock-pattern Collect Samples Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * "Copyright 2012 Lucas Andr? de Alencar"
 * /*from w w  w . j  a  v  a 2 s  .com*/
 * This file is part of "Intelligent Lock Pattern".
 * 
 * "Intelligent Lock Pattern" 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.
 * 
 * "Intelligent Lock Pattern" 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 "Intelligent Lock Pattern".  If not, see <http://www.gnu.org/licenses/>.
 */

package org.unioeste.ilp;

import group.pals.android.lib.ui.lockpattern.widget.LockPatternUtils;
import group.pals.android.lib.ui.lockpattern.widget.LockPatternView;
import group.pals.android.lib.ui.lockpattern.widget.LockPatternView.Cell;
import group.pals.android.lib.ui.lockpattern.widget.LockPatternView.DisplayMode;

import java.util.ArrayList;
import java.util.List;

import org.unioeste.ilp.models.Experience;
import org.unioeste.ilp.models.Pattern;
import org.unioeste.ilp.models.User;
import org.unioeste.ilp.services.SamplesCollectorService;
import org.unioeste.ilp.services.SamplesCollectorService.SamplesCollectorBinder;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.view.MotionEvent;

/**
 * Collects the samples from user and persists it.
 * 
 * @author Lucas Andr? de Alencar
 *
 */
public class CollectSamplesActivity extends LockPatternActivity {
  
  /**
   * Constants to standardize the parameters
   */
    public static final String _PaternSha1 = _ClassName + ".pattern_sha1";
    public static final String user_id = _ClassName + ".user_id";
    public static final String pattern_id = _ClassName + ".pattern_id";
    public static final String experience_id = _ClassName + ".experience_id";
    public static final String numberOfTries = _ClassName + ".positive_entries";
    
    /** If param positive_entries are not specified, this value is used. */
    public static final int defaultNumberOfTries = 100;
    
  int numberOfAttempts;
  
  User user;
  Experience experience;
  
  private List<Cell> lastPattern;
  
  SamplesCollectorService samples_collector;
  boolean boundFlag;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
    getIntentExtras();
    
    if (haveExperience()) {
      user = experience.getUser();
      numberOfAttempts = getNumberOfAttemptsRemaining();
    } else {
      createExperience();
    }
    
    setContentView(R.layout.collect_samples);
    
    setLockTextInfo(R.id.text_info);
    setLockPatternView(R.id.samples_lock_pattern);
    
    updateNumberOfTries(numberOfAttempts);
    lockPatternView.setOnPatternListener(mPatternViewListener);
  }
  
  @Override
  protected void onStart() {
    super.onStart();
    bindSamplesCollectorService();
  }
  
  @Override
  protected void onStop() {
    super.onStop();
    if (boundFlag) {
      unbindService(serviceConnection);
      boundFlag = false;
    }
  }
  
  private void getIntentExtras () {
    numberOfAttempts = getIntent().getIntExtra(numberOfTries, defaultNumberOfTries);
    
    if (haveExperience())
      experience = ilp.experienceDao.load(getIntent().getLongExtra(experience_id, 0));
    else if (getIntent().getLongExtra(user_id, 0) != 0)
      user = ilp.userDao.load(getIntent().getLongExtra(user_id, 0));
    else
      finish();
  }
  
  private int getNumberOfAttemptsRemaining () {
    return numberOfAttempts - experience.getAttempts().size();
  }
  
  private boolean haveExperience () {
    return getIntent().getLongExtra(experience_id, 0) != 0;
  }
  
  private void createExperience () {
    Pattern pattern = getPattern();
    if (pattern != null) {
      experience = new Experience(null, false, user.getId(), pattern.getId());
      ilp.insertExperience(experience);
    } else {
      finish();
    }
  }
  
  private Pattern getPattern () {
    if (getIntent().getLongExtra(pattern_id, 0) != 0)
      return ilp.patternDao.load(getIntent().getLongExtra(pattern_id, 0));
    else
      return null;
  }
  
  private void bindSamplesCollectorService () {
    Intent i = new Intent(this, SamplesCollectorService.class);
    bindService(i, serviceConnection, Context.BIND_AUTO_CREATE);
  }
  
  private void updateNumberOfTries (int numberOfAttempts) {
    java.util.Formatter formatter = new java.util.Formatter();
    lockTextInfo.setText(formatter.format(getString(R.string.number_of_tries), numberOfAttempts).toString());
    formatter.close();
  }
  
  private void doComparePattern (List<Cell> pattern) {
    if (pattern == null) return;
    
    lastPattern = new ArrayList<LockPatternView.Cell>();
        lastPattern.addAll(pattern);
        
        if (LockPatternUtils.patternToSha1(pattern).equals(experience.getPattern().getPattern_sha1())) {
            samples_collector.persistSamples(experience);
          if (--numberOfAttempts == 0) finishExperiment();
          updateNumberOfTries(numberOfAttempts);
          lockPatternView.clearPattern();
        } else {
          samples_collector.cleanSamples();
          lockPatternView.setDisplayMode(DisplayMode.Wrong);
        }
  }
  
  private void finishExperiment () {
    experience.setDone(true);
    ilp.updateExperience(experience);
    finish();
  }
  
  private final LockPatternView.OnPatternListener mPatternViewListener = new LockPatternView.OnPatternListener() {
    
    @Override
    public void onPatternStart() {
      lockPatternView.setDisplayMode(DisplayMode.Correct);
    }
    
    @Override
    public void onPatternDetected(List<Cell> pattern) {
      doComparePattern(pattern);
    }
    
    @Override
    public void onPatternCleared() {
      lockPatternView.setDisplayMode(DisplayMode.Correct);
    }
    
    @Override
    public void onPatternCellAdded(List<Cell> pattern, MotionEvent event) {
      samples_collector.addSample(pattern.get(pattern.size() - 1), event);
    }

    @Override
    public void onPatternCellAdded(List<Cell> pattern) {
      // ignore it
    }
  };
  
  private ServiceConnection serviceConnection = new ServiceConnection() {
    
    @Override
    public void onServiceDisconnected(ComponentName name) {
      boundFlag = false;
    }
    
    @Override
    public void onServiceConnected(ComponentName name, IBinder service) {
      SamplesCollectorBinder binder = (SamplesCollectorBinder) service;
      samples_collector = binder.getService();
      boundFlag = true;
    }
  };
}

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