pl.bcichecki.rms.client.android.activities.SettingsActivity.java Source code

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Here is the source code for pl.bcichecki.rms.client.android.activities.SettingsActivity.java

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/**
 * Project:   rms-client-android
 * File:      SettingsActivity.java
 * License: 
 *            This file is licensed under GNU General Public License version 3
 *            http://www.gnu.org/licenses/gpl-3.0.txt
 *
 * Copyright: Bartosz Cichecki [ cichecki.bartosz@gmail.com ]
 * Date:      26-12-2012
 */

package pl.bcichecki.rms.client.android.activities;

import java.util.List;

import org.apache.commons.lang3.StringUtils;

import android.annotation.TargetApi;
import android.content.Context;
import android.content.res.Configuration;
import android.os.Build;
import android.os.Bundle;
import android.preference.EditTextPreference;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceCategory;
import android.preference.PreferenceFragment;
import android.support.v4.app.NavUtils;
import android.util.Log;
import android.view.MenuItem;

import pl.bcichecki.rms.client.android.R;
import pl.bcichecki.rms.client.android.holders.SharedPreferencesWrapper;
import pl.bcichecki.rms.client.android.utils.SecurityUtils;

public class SettingsActivity extends PreferenceActivity {

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public static class ServerPreferencesFragment extends PreferenceFragment {

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.preferences_server);
        }
    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public static class UserAccountPreferencesFragment extends PreferenceFragment {

        private EditTextPreference passwordPreference;

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.preferences_user_account);

            passwordPreference = (EditTextPreference) findPreference(
                    SharedPreferencesWrapper.Keys.USER_PASSWORD_HASH);
            passwordPreference.setOnPreferenceChangeListener(onPassHashPreferenceChangeListener);
            passwordPreference.setOnPreferenceClickListener(onPassHashedPreferenceClickListener);
        }
    }

    private static Preference.OnPreferenceClickListener onPassHashedPreferenceClickListener = new Preference.OnPreferenceClickListener() {

        @Override
        public boolean onPreferenceClick(Preference preference) {
            EditTextPreference editTextPreference = (EditTextPreference) preference;
            editTextPreference.getEditText().setText(StringUtils.EMPTY);
            return false;
        }
    };

    private static Preference.OnPreferenceChangeListener onPassHashPreferenceChangeListener = new Preference.OnPreferenceChangeListener() {

        @Override
        public boolean onPreferenceChange(Preference preference, Object newValue) {
            // Can't allow persisting entered value, because we need to hash it first!
            Log.d(TAG, "Hashing updated password...");
            String hashedPassword = SecurityUtils.hashSHA512Base64(newValue.toString());
            SharedPreferencesWrapper.setPasswordHash(hashedPassword);
            return false;
        }
    };

    private static final String TAG = "SettingsActivity";

    private static final int ANDROID_HOME_ID = android.R.id.home;

    private static boolean isSimplePreferences(Context context) {
        return Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB || !isXLargeTablet(context);
    }

    private static boolean isXLargeTablet(Context context) {
        return (context.getResources().getConfiguration().screenLayout
                & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_XLARGE;
    }

    private EditTextPreference passwordPreference;

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    private void goBack() {
        if (NavUtils.getParentActivityIntent(this) == null) {
            finish();
        } else {
            NavUtils.navigateUpFromSameTask(this);
        }
    }

    @Override
    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public void onBuildHeaders(List<Header> target) {
        if (!isSimplePreferences(this)) {
            loadHeadersFromResource(R.xml.preferences_headers, target);
        }
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setupActionBar();
    }

    @Override
    public boolean onIsMultiPane() {
        return isXLargeTablet(this) && !isSimplePreferences(this);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == ANDROID_HOME_ID) {
            goBack();
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        setupSimplePreferencesScreen();
    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    private void setupActionBar() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            getActionBar().setDisplayHomeAsUpEnabled(true);
        }
    }

    @SuppressWarnings("deprecation")
    private void setupSimplePreferencesScreen() {
        if (!isSimplePreferences(this)) {
            Log.d(TAG, "Will not create simple preferences.");
            return;
        }

        Log.d(TAG, "Creating simple preferences.");

        addPreferencesFromResource(R.xml.preferences_dummy);

        PreferenceCategory fakeHeader;

        fakeHeader = new PreferenceCategory(this);
        fakeHeader.setTitle(R.string.activity_settings_header_user_account);
        getPreferenceScreen().addPreference(fakeHeader);
        addPreferencesFromResource(R.xml.preferences_user_account);

        fakeHeader = new PreferenceCategory(this);
        fakeHeader.setTitle(R.string.activity_settings_header_server);
        getPreferenceScreen().addPreference(fakeHeader);
        addPreferencesFromResource(R.xml.preferences_server);

        passwordPreference = (EditTextPreference) findPreference(SharedPreferencesWrapper.Keys.USER_PASSWORD_HASH);
        passwordPreference.setOnPreferenceChangeListener(onPassHashPreferenceChangeListener);
        passwordPreference.setOnPreferenceClickListener(onPassHashedPreferenceClickListener);
    }

}