Add fields to model

src/main/java/app/model/Model.java

@@ -1,10 +1,28 @@
 package app.model;
 
+import app.languages.Java;
+
 /**
  * Data model of the application
  */
 public class Model {
+  private static String activeFilePath;
+  private static String currentProjectPath;
+  private static ProgrammingLanguage currentProgrammingLanguage;
 
-  private String text;
+  public static String getActiveFilePath() {
+    return activeFilePath;
+  }
 
+  public static String getProjectPath() {
+    return currentProjectPath;
+  }
+
+  public static ProgrammingLanguage getLanguage() {
+    return currentProgrammingLanguage;
+  }
+
+  public static void setLanguage(ProgrammingLanguage language) {
+    Model.currentProgrammingLanguage = language;
+  }
 }