src/main/java/eu/svjatoslav/instantlauncher/configuration/ConfigurationManager.java

   1 package eu.svjatoslav.instantlauncher.configuration;
   2
   3 import com.esotericsoftware.yamlbeans.YamlReader;
   4 import com.esotericsoftware.yamlbeans.YamlWriter;
   5
   6 import java.io.*;
   7 import java.util.HashSet;
   8 import java.util.Map;
   9
  10 public class ConfigurationManager {
  11
  12     private static final String CONFIG_FILE_NAME = ".instantlauncher";
  13
  14     private boolean propertiesChanged = false;
  15
  16     Configuration configuration;
  17
  18     public ConfigurationManager() throws IOException {
  19         initialize();
  20     }
  21
  22     private File getPropertiesFile() {
  23         return new File(System.getProperty("user.home") + "/" + CONFIG_FILE_NAME);
  24     }
  25
  26     public File getNavigationRootDirectory() {
  27         if (configuration.navigationRootPath == null){
  28             configuration.navigationRootPath = System.getProperty("user.home") + "/";
  29             propertiesChanged = true;
  30             registerDefaultAssociations();
  31         }
  32
  33         return new File(configuration.navigationRootPath);
  34     }
  35
  36     private void initialize() throws IOException {
  37
  38         loadIfFileExists();
  39
  40         validatePropertiesFile();
  41
  42         if (propertiesChanged) {
  43             saveFile();
  44         }
  45     }
  46
  47     private void loadIfFileExists() throws IOException {
  48         final File propertiesFile = getPropertiesFile();
  49         if (!propertiesFile.exists())
  50             return;
  51
  52         YamlReader reader = new YamlReader(new FileReader(propertiesFile));
  53         configuration = reader.read(Configuration.class);
  54         if (configuration == null) {
  55             configuration = new Configuration();
  56             configuration.fileAssociations = new HashSet<>();
  57         };
  58     }
  59
  60     private void saveFile() throws IOException {
  61         YamlWriter writer = new YamlWriter(new FileWriter(getPropertiesFile()));
  62         writer.write(configuration);
  63         writer.close();
  64     }
  65
  66     private void validatePropertiesFile() {
  67         getNavigationRootDirectory();
  68     }
  69
  70     private void registerFileAssociation(String fileRegex, String command){
  71         FileAssociation association = new FileAssociation(fileRegex, command);
  72         configuration.fileAssociations.add(association);
  73         propertiesChanged = true;
  74     }
  75
  76     private void registerDefaultAssociations(){
  77         registerFileAssociation(".jpeg$", "eog {file}");
  78     }
  79 }