Initial commit from SVN.
This commit is contained in:
wcrisman
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package com.eua.controller;
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import com.foundation.application.*;
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import com.eua.application.*;
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/**
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*
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*/
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public abstract class AbstractController extends com.foundation.controller.Controller {
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/**
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* AbstractController constructor.
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*/
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public AbstractController() {
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super();
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}//AbstractController()//
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/**
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* Gets the application object that this object is running under. The application object provides the object various services that it will need.
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* @return The application reference for the application this object is running under.
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*/
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public IApplication getApplication() {
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return EncryptionUtilityApplication.getSingleton();
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}//getApplication()//
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}//AbstractController//
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@@ -0,0 +1,215 @@
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package com.eua.controller;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.RandomAccessFile;
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import java.nio.channels.FileChannel;
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import java.nio.channels.FileLock;
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import java.util.Properties;
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import com.common.debug.Debug;
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import com.foundation.metadata.Attribute;
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/**
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* Copyright Declarative Engineering LLC 2009<p>
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*/
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public class SettingsController extends AbstractController {
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private static final File settingsFilePath = new File(new File(System.getProperty("user.home"), "Brainstorm Archiver"), "settings.properties");
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private static final File settingsLockFilePath = new File(new File(System.getProperty("user.home"), "Brainstorm Archiver"), "settings.lock");
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private static final String ENCRYPTION_OUTPUT_DIRECTORY = "encryption.output.directory";
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private static final String ENCRYPTED_FILE_DIRECTORY = "encrypted.file.directory";
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private static final String ENCRYPTED_FILE_NAME = "encrypted.file.name";
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private static final String DECRYPTION_OUTPUT_DIRECTORY = "decryption.output.directory";
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private static final String INPUT_DIRECTORY = "input.directory";
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public static final Attribute PROPERTIES = registerAttribute(SettingsController.class, "properties", AO_REFERENCED);
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public static final Attribute PROPERTIES_DATE = registerAttribute(SettingsController.class, "propertiesDate");
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/** The one and only instance of this class. */
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private static final SettingsController singleton = new SettingsController();
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/**
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* Gets the only instance of this class.
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* @return The one and only instance.
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*/
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public static SettingsController getSingleton() {
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return singleton;
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}//getSingleton()//
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/**
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* SettingsController constructor.
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*/
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private SettingsController() {
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updateProperties();
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}//SettingsController()//
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/**
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* Reads the properties file.
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* @return The properties read from disk.
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*/
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private void updateProperties() {
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Properties properties = new Properties();
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Long lastModified = null;
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if(settingsFilePath.exists() && settingsFilePath.canRead()) {
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FileInputStream fin = null;
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lastModified = new Long(settingsFilePath.lastModified());
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try {
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fin = new FileInputStream(settingsFilePath);
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properties.load(fin);
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fin.close();
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fin = null;
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}//try//
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catch(Throwable e) {
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Debug.log(e);
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}//catch//
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finally {
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if(fin != null) try {fin.close();} catch(Throwable e) {}
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}//finally//
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}//if//
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else {
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try {
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settingsFilePath.getParentFile().mkdirs();
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settingsFilePath.createNewFile();
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lastModified = new Long(settingsFilePath.lastModified());
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}//try//
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catch(Throwable e) {
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Debug.log(e);
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}//catch//
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}//else//
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setProperties(properties);
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setPropertiesDate(lastModified);
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}//updateProperties()//
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/**
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* Modifies the settings properties using a file lock.
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* <p>Locks on the settings properties file, then updates if necessary the in memory properties, then runs the operation passed to this method, then stores the properties back to file.</p>
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* @param operation The operation that will update the properties object.
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*/
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private void modifyProperties(Runnable operation) {
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//The properties date will only be null if we cannot store properties due to permission problems.//
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if(getPropertiesDate() != null) {
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FileLock lock = null;
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FileChannel channel = null;
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FileOutputStream fout = null;
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try {
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long lastModifiedDate = settingsFilePath.lastModified();
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channel = new RandomAccessFile(settingsLockFilePath, "rw").getChannel();
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lock = channel.lock();
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//Update the in memory settings first.//
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if(getPropertiesDate().longValue() != lastModifiedDate) {
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updateProperties();
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}//if//
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//Modify the properties.//
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operation.run();
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//Write the properties to a byte array.//
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fout = new FileOutputStream(settingsFilePath, false);
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getProperties().store(fout, "Brainstorm Archiver Settings");
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}//try//
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catch(Throwable e) {
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Debug.log(e);
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}//catch//
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finally {
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if(fout != null) try {fout.close();} catch(Throwable e) {}
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if(lock != null) try {lock.release();} catch(Throwable e) {}
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if(channel != null) try {channel.close();} catch(Throwable e) {}
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}//if//
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setPropertiesDate(new Long(settingsFilePath.lastModified()));
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}//if//
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}//modifyProperties()//
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/**
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* Gets the default output path for encrypted files.
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* @return The last used path for placing encrypted files.
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*/
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public String getEncryptionOutputDirectory() {
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return getProperties().getProperty(ENCRYPTION_OUTPUT_DIRECTORY);
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}//getEncryptionOutputDirectory()//
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/**
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* Gets the default file name for the encrypted files.
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* @return The last used file name for encrypting files.
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*/
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public String getEncryptedFileName() {
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return getProperties().getProperty(ENCRYPTED_FILE_NAME);
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}//getEncryptedFileName()//
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/**
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* Gets the last used directory for selecting input files for encrypting.
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* @return The last used directory for the selection of files to encrypt.
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*/
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public String getInputDirectory() {
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return getProperties().getProperty(INPUT_DIRECTORY);
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}//getInputDirectory()//
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/**
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* Sets settings for encrypting.
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* @param encryptionOutputDirectory The last used path for placing encrypted files.
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* @param encryptedFileName The last used file name for encrypting files.
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*/
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public void setEncryptionSettings(final String encryptionOutputDirectory, final String encryptedFileName, final String inputDirectory) {
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modifyProperties(new Runnable() {
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public void run() {
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getProperties().setProperty(ENCRYPTION_OUTPUT_DIRECTORY, encryptionOutputDirectory);
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getProperties().setProperty(ENCRYPTED_FILE_NAME, encryptedFileName);
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getProperties().setProperty(INPUT_DIRECTORY, inputDirectory);
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}//run()//
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});
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}//setEncryptionSettings()//
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/**
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* Gets the default directory containing encrypted files to be decrypted.
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* @return The directory of the last decrypted file.
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*/
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public String getEncryptedFileDirectory() {
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return getProperties().getProperty(ENCRYPTED_FILE_DIRECTORY);
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}//getEncryptedFileDirectory()//
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/**
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* Gets the default output path for decrypted files.
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* @return The last used path for placing decrypted files.
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*/
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public String getDecryptionOutputDirectory() {
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return getProperties().getProperty(DECRYPTION_OUTPUT_DIRECTORY);
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}//getDecryptionOutputDirectory()//
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/**
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* Sets the settings for decrypting.
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* @param decryptionOutputDirectory The directory of the last decrypted file.
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* @param encryptedFileDirectory The directory of the last decrypted file.
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*/
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public void setDecryptionSettings(final String decryptionOutputDirectory, final String encryptedFileDirectory) {
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modifyProperties(new Runnable() {
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public void run() {
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getProperties().setProperty(ENCRYPTED_FILE_DIRECTORY, encryptedFileDirectory);
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getProperties().setProperty(DECRYPTION_OUTPUT_DIRECTORY, decryptionOutputDirectory);
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}//run()//
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});
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}//setDecryptionSettings()//
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/**
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* Gets the properties value.
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* @return The properties value.
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*/
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private Properties getProperties() {
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return (Properties) getAttributeValue(PROPERTIES);
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}//getProperties()//
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/**
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* Sets the properties value.
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* @param properties The properties value.
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*/
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private void setProperties(Properties properties) {
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setAttributeValue(PROPERTIES, properties);
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}//setProperties()//
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/**
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* Gets the propertiesDate value.
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* @return The propertiesDate value.
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*/
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private Long getPropertiesDate() {
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return (Long) getAttributeValue(PROPERTIES_DATE);
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}//getPropertiesDate()//
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/**
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* Sets the propertiesDate value.
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* @param propertiesDate The propertiesDate value.
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*/
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private void setPropertiesDate(Long propertiesDate) {
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setAttributeValue(PROPERTIES_DATE, propertiesDate);
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}//setPropertiesDate()//
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}//SettingsController//
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