Automate switching between languages

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

@@ -5,6 +5,7 @@ import java.util.Collection;
 import java.util.ResourceBundle;
 
 import com.google.common.eventbus.EventBus;
+import com.google.common.eventbus.Subscribe;
 
 import org.fxmisc.richtext.CodeArea;
 import org.fxmisc.richtext.LineNumberFactory;
@@ -13,6 +14,7 @@ import org.fxmisc.richtext.model.TwoDimensional.Bias;
 import org.fxmisc.richtext.model.TwoDimensional.Position;
 
 import app.events.EditorChangedEvent;
+import app.events.LanguageChangedEvent;
 import app.model.Model;
 import app.service.LanguageOperations;
 import javafx.fxml.FXML;
@@ -39,20 +41,26 @@ public class EditorController implements Initializable, Controller {
   }
 
   /**
-   * Links the controller to the global model
-   * @param model The model to be linked
+   * Applies highlighting to the editor.
+   * @param highlighting highlighting data
    */
-  public void setModel(Model model) {
-    this.model = model;
-  }
-
-  public void setHighlighting(StyleSpans<Collection<String>> highlighting) {
+  private 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
+   * Recalculates and refreshes the syntax highlighting of the editor.
+   */
+  private void refreshHighlighting() {
+    this.setHighlighting(
+      LanguageOperations.syntaxHighlight(
+        this.editor.getText(),
+        Model.getLanguage()));
+  }
+
+  /**
+   * Handles the event whenever the content of the editor is changed.
+   * @param event JavaFX event containing metadata
    */
   @FXML
   public void editorChanged(KeyEvent event) {
@@ -64,10 +72,16 @@ public class EditorController implements Initializable, Controller {
         pos.getMajor() + 1,
         pos.getMinor()
       ));
-    this.setHighlighting(
-      LanguageOperations.syntaxHighlight(
-        this.editor.getText(),
-        Model.getLanguage()));
+    this.refreshHighlighting();
+  }
+
+  /**
+   * Refreshes the editor whenever the language is changed.
+   * @param event Which language was switched to
+   */
+  @Subscribe
+  private void handle(LanguageChangedEvent event) {
+    this.refreshHighlighting();
   }
 
 }