1 files changed, 56 insertions, 0 deletions
diff --git a/src/jcgp/gui/handlers/InputHandlers.java b/src/jcgp/gui/handlers/InputHandlers.java
new file mode 100644
index 0000000..cc677eb
--- /dev/null
+++ b/src/jcgp/gui/handlers/InputHandlers.java
@@ -0,0 +1,56 @@
+package jcgp.gui.handlers;
+
+import javafx.event.EventHandler;
+import javafx.scene.input.MouseEvent;
+import jcgp.gui.population.GUIGene.GUIGeneState;
+import jcgp.gui.population.GUIInput;
+
+/**
+ * Holds the handlers that define the behaviour of {@code GUIInput}.
+ * <br><br>
+ * The handlers are instantiated here statically and added to {@code GUIInput}
+ * instances using {@code InputHandlers.addHandlers(...)}. This guarantees that
+ * all inputs behave the same way without instantiating a new set of handlers for
+ * each input instance.
+ * 
+ * @author Eduardo Pedroni
+ *
+ */
+public final class InputHandlers {
+	
+	/**
+	 * Private constructor to prevent instantiation.
+	 */
+	private InputHandlers() {}
+
+	/**
+	 * Inputs don't do much; set state to hover when mouse enters.
+	 */
+	private static EventHandler<MouseEvent> mouseEnteredHandler = new EventHandler<MouseEvent>() {
+		@Override
+		public void handle(MouseEvent event) {
+			((GUIInput) event.getSource()).setState(GUIGeneState.HOVER);
+		}
+	};
+	
+	/**
+	 * Inputs don't do much; set state to neutral when mouse exits.
+	 */
+	private static EventHandler<MouseEvent> mouseExitedHandler = new EventHandler<MouseEvent>() {
+		@Override
+		public void handle(MouseEvent event) {
+			((GUIInput) event.getSource()).setState(GUIGeneState.NEUTRAL);
+		}
+	};
+	
+	/**
+	 * Adds all handlers to the specified input.
+	 * 
+	 * @param input the {@code GUIInput} to which the handlers will be added.
+	 */
+	public static void addHandlers(GUIInput input) {
+		input.addEventHandler(MouseEvent.MOUSE_ENTERED, mouseEnteredHandler);
+		input.addEventHandler(MouseEvent.MOUSE_EXITED, mouseExitedHandler);
+	}
+	
+}