Add syntax highlighting framework

src/main/java/app/controllers/EditorController.java

@@ -1,17 +1,20 @@
 package app.controllers;
 
 import java.net.URL;
+import java.util.Collection;
 import java.util.ResourceBundle;
 
 import com.google.common.eventbus.EventBus;
 
 import org.fxmisc.richtext.CodeArea;
 import org.fxmisc.richtext.LineNumberFactory;
+import org.fxmisc.richtext.model.StyleSpans;
 import org.fxmisc.richtext.model.TwoDimensional.Bias;
 import org.fxmisc.richtext.model.TwoDimensional.Position;
 
 import app.events.EditorChangedEvent;
 import app.model.Model;
+import app.service.LanguageOperations;
 import javafx.fxml.FXML;
 import javafx.fxml.Initializable;
 import javafx.scene.input.KeyEvent;
@@ -43,6 +46,10 @@ public class EditorController implements Initializable, Controller {
     this.model = model;
   }
 
+  public void setHighlighting(StyleSpans<Collection<String>> highlighting) {
+    this.editor.setStyleSpans(0, highlighting);
+  }
+
   /**
    * Handles events from the editor, and reflects them in the model
    * @param event The object containing metadata of the event
@@ -57,6 +64,10 @@ public class EditorController implements Initializable, Controller {
         pos.getMajor() + 1,
         pos.getMinor()
       ));
+    this.setHighlighting(
+      LanguageOperations.syntaxHighlight(
+        this.editor.getText(),
+        Model.getLanguage()));
   }
 
 }