Core Apps » NoteCipher

package info.guardianproject.notepadbot;

import java.io.IOException;

import java.security.GeneralSecurityException;

import net.simonvt.numberpicker.NumberPicker;

import info.guardianproject.cacheword.CacheWordActivityHandler;

import info.guardianproject.cacheword.Constants;

import info.guardianproject.cacheword.ICacheWordSubscriber;

import info.guardianproject.cacheword.PassphraseSecrets;

import android.annotation.SuppressLint;

import android.app.AlertDialog;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.os.Build;

import android.os.Bundle;

import android.preference.Preference;

import android.preference.Preference.OnPreferenceChangeListener;

import android.preference.PreferenceFragment;

import android.preference.PreferenceManager;

import android.support.v4.app.NavUtils;

import android.util.Log;

import android.widget.Toast;

import com.actionbarsherlock.app.SherlockPreferenceActivity;

import com.actionbarsherlock.view.MenuItem;

@SuppressLint("NewApi")

@SuppressWarnings("deprecation")

public class Settings extends SherlockPreferenceActivity implements ICacheWordSubscriber {

        public static final String LANG_SEL_KEY = "langSelected";

        private CacheWordActivityHandler mCacheWord;

        @Override

        public void onCreate(Bundle savedInstanceState) {

                super.onCreate(savedInstanceState);

                getSupportActionBar().setDisplayHomeAsUpEnabled(true);

                mCacheWord = new CacheWordActivityHandler(this, ((App)getApplication()).getCWSettings());

                // If in android 3+ use a preference fragment which is the new recommended way

                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {

                        getFragmentManager().beginTransaction()

                                        .replace(android.R.id.content, new PreferenceFragment() {

                                                @Override

                                                public void onCreate(final Bundle savedInstanceState) {

                                                        super.onCreate(savedInstanceState);

                                                        addPreferencesFromResource(R.xml.settings);

                                                        findPreference(Constants.SHARED_PREFS_TIMEOUT)

                                                                .setOnPreferenceClickListener(changeLockTimeoutListener);

                                                        findPreference(Constants.SHARED_PREFS_VIBRATE)

                                                                .setOnPreferenceChangeListener(vibrateChangeListener);

                                                        findPreference(Constants.SHARED_PREFS_SECRETS)

                                                                .setOnPreferenceChangeListener(passphraseChangeListener);

                                                }

                                        })

                                        .commit();

                } else {

                        // Otherwise load the preferences.xml in the Activity like in previous android versions

                        addPreferencesFromResource(R.xml.settings);

                        findPreference(Constants.SHARED_PREFS_TIMEOUT)

                                .setOnPreferenceClickListener(changeLockTimeoutListener);

                        findPreference(Constants.SHARED_PREFS_VIBRATE)

                                .setOnPreferenceChangeListener(vibrateChangeListener);

                        findPreference(Constants.SHARED_PREFS_SECRETS)

                                .setOnPreferenceChangeListener(passphraseChangeListener);

                }

        }

        @Override

        public boolean onOptionsItemSelected(MenuItem item) {

                switch (item.getItemId()) {

                case android.R.id.home:

                        NavUtils.navigateUpTo(this, new Intent(this, NoteCipher.class));

                        return true;

                }

                return super.onOptionsItemSelected(item);

        }

        @Override

        public void onDestroy() {

                super.onDestroy();

        }

        private Preference.OnPreferenceClickListener changeLockTimeoutListener = 

                        new Preference.OnPreferenceClickListener() {

                                        @Override

                                        public boolean onPreferenceClick(Preference pref) {

                                                changeTimeoutPrompt();

                                                return true;

                                        }

        };

        private Preference.OnPreferenceChangeListener vibrateChangeListener = 

                        new OnPreferenceChangeListener(){

                @Override

                public boolean onPreferenceChange(Preference pref, Object newValue) {

                        // save option internally in cacheword as well

                        mCacheWord.setVibrateSetting((Boolean) newValue);

                        return true;

                }

        };

        private Preference.OnPreferenceChangeListener passphraseChangeListener = 

                        new OnPreferenceChangeListener(){

                @Override

                public boolean onPreferenceChange(Preference pref, Object newValue) {

                        try {

                                char[] pass = ((String) newValue).toCharArray();

                                if (NConstants.validatePassword(pass)) {

                                        mCacheWord.changePassphrase((PassphraseSecrets) mCacheWord.getCachedSecrets(), pass);

                                } else {

                                        Toast.makeText(getApplicationContext(), 

                                                        R.string.pass_err_length, Toast.LENGTH_SHORT).show();

                                }

                        } catch (IOException e) {

                                Toast.makeText(getApplicationContext(), 

                                                R.string.pass_err, Toast.LENGTH_SHORT).show();

                        }

                        return false;

                }

        };

        public static final boolean getNoteLinesOption(Context context) {

                boolean defValue = context.getResources().getBoolean(R.bool.notecipher_uselines_default);

        return PreferenceManager.getDefaultSharedPreferences(context).getBoolean(NConstants.SHARED_PREFS_NOTELINES, defValue);

        }

        private void changeTimeoutPrompt() {

                if (mCacheWord.isLocked())

            return;

        AlertDialog.Builder builder = new AlertDialog.Builder(this);

        builder.setTitle(R.string.change_timeout_prompt_title);

        builder.setMessage(R.string.change_timeout_prompt);

        final NumberPicker input = new NumberPicker(this);

        input.setMinValue(1);

        input.setMaxValue(60);

        input.setValue( mCacheWord.getTimeoutMinutes() );

        builder.setView(input);

        builder.setPositiveButton("OK",

                new DialogInterface.OnClickListener() {

                    @Override

                    public void onClick(DialogInterface dialog, int which) {

                        int timeout = input.getValue();

                        mCacheWord.setTimeoutMinutes(timeout);

                        dialog.dismiss();

                    }

                });

        builder.setNegativeButton("Cancel",

                new DialogInterface.OnClickListener() {

                    @Override

                    public void onClick(DialogInterface dialog, int which) {

                        dialog.cancel();

                    }

                });

        builder.show();

    }

        @Override

        public void onCacheWordUninitialized() {

                Log.d(NConstants.TAG, "onCacheWordUninitialized");

                System.gc();

                showLockScreen();

        }

        @Override

        public void onCacheWordLocked() {

                Log.d(NConstants.TAG, "onCacheWordLocked");

                System.gc();

                showLockScreen();

        }

        @Override

        public void onCacheWordOpened() { 

                Log.d(NConstants.TAG, "onCacheWordOpened");

        }

        @Override

    protected void onPause() {

        super.onPause();

        mCacheWord.onPause();

    }

    @Override

    protected void onResume() {

        super.onResume();

        mCacheWord.onResume();

    }

    void showLockScreen() {

        Intent intent = new Intent(this, LockScreenActivity.class);

        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);

        intent.putExtra("originalIntent", getIntent());

        startActivity(intent);

        finish();

    }

}