Includes validator framework and completes Task 3

1 files changed, 89 insertions, 0 deletions

diff --git a/src/de/fhswf/in/inf/java2/aufgabe03/RegExTextField.java b/src/de/fhswf/in/inf/java2/aufgabe03/RegExTextField.java
new file mode 100644
index 0000000..cc68ff2
--- /dev/null
+++ b/src/de/fhswf/in/inf/java2/aufgabe03/RegExTextField.java
@@ -0,0 +1,89 @@
+/**
+ * File containing the RegExTextField class.
+ */
+
+package de.fhswf.in.inf.java2.aufgabe03;
+
+import javafx.scene.control.ContentDisplay;
+import javafx.scene.control.Label;
+import javafx.scene.control.TextField;
+import javafx.scene.image.Image;
+import javafx.scene.image.ImageView;
+import javafx.scene.layout.HBox;
+
+/**
+ * A class that checks an input against a regex and gives optical feedback.
+ *
+ * @author $Author: $
+ * @version $Revision: $, $Date: $ UTC
+ */
+public class RegExTextField extends HBox
+{
+
+   private Label label;
+
+   private TextField textField;
+
+   private RegExValidator rv;
+
+   /**
+    * Creates an element that checks regexes.
+    *
+    * @param regEx
+    *           The regex to check the text field against.
+    */
+   public RegExTextField(String regEx)
+   {
+      this(regEx, "regEx");
+   }
+
+   /**
+    * Creates an element that checks regexes.
+    *
+    * @param regEx
+    *           The regex to check the text field against.
+    * @param labelText
+    *           An optional label that is shown before the text field.
+    */
+   public RegExTextField(String regEx, String labelText)
+   {
+      if (regEx == null)
+      {
+         throw new IllegalArgumentException("RegEx can't be null.");
+      }
+      if (regEx.isEmpty())
+      {
+         throw new IllegalArgumentException("RegEx can't be empty.");
+      }
+      if (labelText == null)
+      {
+         throw new IllegalArgumentException("labelText can't be null.");
+      }
+      if (labelText.isEmpty())
+      {
+         throw new IllegalArgumentException("labelText can't be empty.");
+      }
+      
+      label = new Label(labelText);
+      textField = new TextField();
+
+      label.setContentDisplay(ContentDisplay.RIGHT);
+
+      this.getChildren().addAll(label, textField);
+
+      rv = new RegExValidator(regEx);
+      rv.addStatusListener(e -> {
+            if (!e.isStatus())
+            {
+               label.setGraphic(new ImageView(new Image("img/error.png")));
+            }
+            else
+            {
+               label.setGraphic(null);
+            }
+         });
+
+      textField.textProperty().addListener(rv);
+   }
+
+}