PreferencesActivity.java

/*
 *  Copyright (C) 2012 Simon Robinson
 * 
 *  This file is part of Com-Me.
 * 
 *  Com-Me is free software; you can redistribute it and/or modify it 
 *  under the terms of the GNU Lesser General Public License as 
 *  published by the Free Software Foundation; either version 3 of the 
 *  License, or (at your option) any later version.
 *
 *  Com-Me 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 Lesser General 
 *  Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with Com-Me.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

package ac.robinson.mediatablet.activity;

import java.io.File;
import java.text.SimpleDateFormat;

import ac.robinson.mediatablet.MediaTablet;
import ac.robinson.mediatablet.R;
import ac.robinson.mediatablet.view.HomesteadSurfaceView;
import ac.robinson.mediautilities.SelectDirectoryActivity;
import ac.robinson.util.DebugUtilities;
import ac.robinson.util.IOUtilities;
import ac.robinson.util.StringUtilities;
import ac.robinson.util.UIUtilities;
import ac.robinson.util.UIUtilities.ReflectionTab;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Environment;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceCategory;
import android.preference.PreferenceManager;
import android.preference.PreferenceScreen;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;

public class PreferencesActivity extends PreferenceActivity {

	// @SuppressWarnings("deprecation") because until we move to fragments this is the only way to provide custom
	// formatted preferences (PreferenceFragment is not in the compatibility library)
	@SuppressWarnings("deprecation")
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		UIUtilities.setPixelDithering(getWindow());
		UIUtilities.configureActionBar(this, true, false, R.string.title_preferences, 0);
		UIUtilities.addActionBarTabs(this, new ReflectionTab[] { new ReflectionTab(R.id.intent_preferences,
				android.R.drawable.ic_menu_preferences, getString(R.string.title_preferences), true) }, null);
		addPreferencesFromResource(R.xml.preferences);

		// set up select bluetooth directory option
		Preference button = (Preference) findPreference(getString(R.string.key_bluetooth_directory));
		button.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
			@Override
			public boolean onPreferenceClick(Preference preference) {
				SharedPreferences mediaTabletSettings = preference.getSharedPreferences();
				String currentDirectory = null;
				try {
					currentDirectory = mediaTabletSettings.getString(getString(R.string.key_bluetooth_directory), null);
				} catch (Exception e) {
				}
				if (currentDirectory == null) {
					currentDirectory = getString(R.string.default_bluetooth_directory);
					if (!new File(currentDirectory).exists()) {
						currentDirectory = getString(R.string.default_bluetooth_directory_alternative);
						if (!new File(currentDirectory).exists() && IOUtilities.externalStorageIsReadable()) {
							currentDirectory = Environment.getExternalStorageDirectory().getAbsolutePath();
						} else {
							currentDirectory = "/"; // default to storage root
						}
					}
				}
				final Intent intent = new Intent(getBaseContext(), SelectDirectoryActivity.class);
				intent.putExtra(SelectDirectoryActivity.START_PATH, currentDirectory);
				startActivityForResult(intent, R.id.intent_directory_chooser);
				return true;
			}
		});

		// set up the change panorama option
		Preference panoramaButton = (Preference) findPreference(getString(R.string.key_change_panorama_image));
		panoramaButton.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
			@Override
			public boolean onPreferenceClick(Preference preference) {
				LayoutInflater inflater = LayoutInflater.from(PreferencesActivity.this);
				final View textEntryView = inflater.inflate(R.layout.password_input, null);
				AlertDialog.Builder builder = new AlertDialog.Builder(PreferencesActivity.this);
				builder.setMessage(R.string.panorama_change_password_prompt).setCancelable(false)
						.setView(textEntryView)
						.setPositiveButton(R.string.panorama_change_prompt, new DialogInterface.OnClickListener() {
							@Override
							public void onClick(DialogInterface dialog, int id) {
								if (MediaTablet.ADMINISTRATOR_PASSWORD.equals(StringUtilities
										.sha1Hash(((EditText) textEntryView.findViewById(R.id.text_password_entry))
												.getText().toString()))) {
									// remove the existing panorama image
									SharedPreferences panoramaSettings = getSharedPreferences(
											MediaTablet.APPLICATION_NAME, Context.MODE_PRIVATE);
									SharedPreferences.Editor prefsEditor = panoramaSettings.edit();
									prefsEditor.putString(getString(R.string.key_panorama_file), null);
									prefsEditor.apply();

									// remove existing cached images just in case
									HomesteadSurfaceView.forceImageReload();

									// clear all activities and reload the homestead browser
									Intent reloadIntent = new Intent(PreferencesActivity.this,
											HomesteadBrowserActivity.class);
									reloadIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
									startActivity(reloadIntent);
									finish();
								} else {
									UIUtilities.showToast(PreferencesActivity.this,
											R.string.panorama_change_password_incorrect);
								}
							}
						}).setNegativeButton(R.string.button_cancel, new DialogInterface.OnClickListener() {
							@Override
							public void onClick(DialogInterface dialog, int id) {
								dialog.cancel();
							}
						});
				builder.show();
				return true;
			}
		});

		// add the contact us button
		PreferenceScreen preferenceScreen = getPreferenceScreen();
		Preference contactUsPreference = preferenceScreen.findPreference(getString(R.string.key_contact_us));
		contactUsPreference.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
			@Override
			public boolean onPreferenceClick(Preference preference) {
				Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
				emailIntent.setType("plain/text");
				emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL,
						new String[] { getString(R.string.preferences_contact_us_email_address) });
				emailIntent.putExtra(
						android.content.Intent.EXTRA_SUBJECT,
						getString(R.string.preferences_contact_us_email_subject, getString(R.string.app_name),
								SimpleDateFormat.getDateTimeInstance().format(new java.util.Date())));
				Preference aboutPreference = findPreference(getString(R.string.key_about_application));
				emailIntent.putExtra(android.content.Intent.EXTRA_TEXT,
						getString(R.string.preferences_contact_us_email_body, aboutPreference.getSummary()));
				try {
					startActivity(Intent.createChooser(emailIntent, getString(R.string.preferences_contact_us_title)));
				} catch (ActivityNotFoundException e) {
					UIUtilities.showFormattedToast(PreferencesActivity.this,
							R.string.preferences_contact_us_email_error,
							getString(R.string.preferences_contact_us_email_address));
				}
				return true;
			}
		});

		// add version and build information
		Preference aboutPreference = preferenceScreen.findPreference(getString(R.string.key_about_application));
		try {
			PackageManager manager = this.getPackageManager();
			PackageInfo info = manager.getPackageInfo(this.getPackageName(), 0);
			aboutPreference.setTitle(getString(R.string.preferences_about_app_title, getString(R.string.app_name),
					info.versionName));
			aboutPreference.setSummary(getString(R.string.preferences_about_app_summary, info.versionCode,
					DebugUtilities.getApplicationBuildTime(getPackageManager(), getPackageName()),
					DebugUtilities.getDeviceDebugSummary(getWindowManager(), getResources())));
		} catch (Exception e) {
			PreferenceCategory aboutCategory = (PreferenceCategory) preferenceScreen
					.findPreference(getString(R.string.key_about_category));
			aboutCategory.removePreference(aboutPreference);
		}

	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.save, menu);
		return super.onCreateOptionsMenu(menu);
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		switch (item.getItemId()) {
			case android.R.id.home:
			case R.id.menu_save:
				onBackPressed();
				return true;

			default:
				return super.onOptionsItemSelected(item);
		}
	}

	@Override
	public void onActivityResult(int requestCode, int resultCode, Intent resultIntent) {
		switch (requestCode) {
			case R.id.intent_directory_chooser:
				if (resultCode == Activity.RESULT_OK && resultIntent != null) {
					String resultPath = resultIntent.getStringExtra(SelectDirectoryActivity.RESULT_PATH);
					if (resultPath != null) {
						File newPath = new File(resultPath);
						if (newPath.canRead()) {
							SharedPreferences mediaTabletSettings = PreferenceManager
									.getDefaultSharedPreferences(PreferencesActivity.this);
							SharedPreferences.Editor prefsEditor = mediaTabletSettings.edit();
							prefsEditor.putString(getString(R.string.key_bluetooth_directory), resultPath);
							prefsEditor.apply();
						} else {
							UIUtilities.showToast(PreferencesActivity.this,
									R.string.preferences_bluetooth_directory_error);
						}
					}
				}
				break;

			default:
				super.onActivityResult(requestCode, resultCode, resultIntent);
		}
	}
}