Added GUIHandlers file for extracted handlers, started removing parent class references from genes

7 files changed, 101 insertions, 1111 deletions

diff --git a/src/jcgp/gui/population/ChromosomePane.java b/src/jcgp/gui/population/ChromosomePane.java
index 3546011..f09d452 100644
--- a/src/jcgp/gui/population/ChromosomePane.java
+++ b/src/jcgp/gui/population/ChromosomePane.java
@@ -1,10 +1,7 @@
 package jcgp.gui.population;
 
-import java.util.ArrayList;
-
 import javafx.scene.control.ScrollPane;
 import javafx.scene.layout.Pane;
-import javafx.scene.shape.Line;
 import jcgp.backend.population.Chromosome;
 import jcgp.backend.population.Connection;
 import jcgp.backend.population.Input;
@@ -12,6 +9,7 @@ import jcgp.backend.population.Node;
 import jcgp.backend.resources.Resources;
 import jcgp.gui.GUI;
 import jcgp.gui.constants.Constants;
+import jcgp.gui.handlers.GUIHandlers;
 
 /**
  * This extension of {@code ScrollPane} contains a series of
@@ -30,27 +28,18 @@ public class ChromosomePane extends ScrollPane {
 	
 	private Pane content;
 	
-	private ArrayList<Line> connectionLines;
-	private ArrayList<GUIOutput> relock = new ArrayList<GUIOutput>();
-	
 	private int rows, columns;
 	
-	private Object[] testInputs;
-	
 	private boolean target = false;
-	private PopulationPane parent;
 	
 	public ChromosomePane(Chromosome chromosome, GUI gui, PopulationPane parent) {
 		super();
 		
 		final Resources resources = gui.getExperiment().getResources();
-		this.parent = parent;
 		
 		rows = resources.rows();
 		columns = resources.columns();
 		
-		connectionLines = new ArrayList<Line>();
-		
 		content = new Pane();
 		content.setId("content pane for genes");
 		
@@ -59,47 +48,35 @@ public class ChromosomePane extends ScrollPane {
 		guiInputs = new GUIInput[resources.inputs()];
 		for (int i = 0; i < guiInputs.length; i++) {
 			// make the GUI elements
-			guiInputs[i] = new GUIInput(this, chromosome.getInput(i));
-			content.getChildren().addAll(guiInputs[i]);
+			guiInputs[i] = new GUIInput(chromosome.getInput(i));
+			guiInputs[i].relocate(Constants.NODE_RADIUS,
+					(chromosome.getInput(i).getIndex() * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS);
+			GUIHandlers.addHandlers(guiInputs[i]);
 		}
+		content.getChildren().addAll(guiInputs);
 		// nodes
 		guiNodes = new GUINode[rows][columns];
-		double angle, xPos, yPos;
 		for (int r = 0; r < rows; r++) {
 			for (int c = 0; c < columns; c++) {
-				// make the connection lines
-				Line lines[] = new Line[resources.arity()];
-				for (int l = 0; l < lines.length; l++) {
-					angle = ((((double) (l + 1)) / ((double) (lines.length + 1))) * Constants.THETA) - (Constants.THETA / 2);
-					xPos = (-Math.cos(angle) * Constants.NODE_RADIUS) + (((c + 1) * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS);
-					yPos = (Math.sin(angle) * Constants.NODE_RADIUS) + ((r * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS);
-					
-					lines[l] = new Line(xPos, yPos, xPos, yPos);
-					lines[l].setMouseTransparent(true);
-					lines[l].setVisible(false);
-					connectionLines.add(lines[l]);
-				}
 				// make the GUI elements
-				guiNodes[r][c] = new GUINode(this, chromosome.getNode(r, c), lines, gui);
+				guiNodes[r][c] = new GUINode(chromosome.getNode(r, c));
+				guiNodes[r][c].relocate(((chromosome.getNode(r, c).getColumn() + 1) * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS,
+						(chromosome.getNode(r, c).getRow() * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS);
+				GUIHandlers.addHandlers(guiNodes[r][c]);
 			}
 			content.getChildren().addAll(guiNodes[r]);
 		}
 		// outputs
 		guiOutputs = new GUIOutput[resources.outputs()];
 		for (int i = 0; i < guiOutputs.length; i++) {
-			xPos = ((resources.columns() + 1) * (2 * Constants.NODE_RADIUS + Constants.SPACING));
-			yPos = (chromosome.getOutput(i).getIndex() * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS;
-			// make the line
-			Line line = new Line(xPos, yPos, xPos, yPos);
-			line.setMouseTransparent(true);
-			line.setVisible(false);
-			connectionLines.add(line);
 			// make the GUI elements
-			guiOutputs[i] = new GUIOutput(this, chromosome.getOutput(i), line, gui);
-			content.getChildren().addAll(guiOutputs[i]);
+			guiOutputs[i] = new GUIOutput(chromosome.getOutput(i));
+			guiOutputs[i].relocate(((resources.columns() + 1) * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS,
+					(chromosome.getOutput(i).getIndex() * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS);
+			GUIHandlers.addHandlers(guiOutputs[i]);
 		}
+		content.getChildren().addAll(guiOutputs);
 
-		content.getChildren().addAll(connectionLines);
 		setPrefWidth(620);	
 		setContent(content);
 	}
@@ -127,61 +104,41 @@ public class ChromosomePane extends ScrollPane {
 		for (int r = 0; r < rows; r++) {
 			for (int c = 0; c < columns; c++) {
 				guiNodes[r][c].setNode(chr.getNode(r, c));
-				guiNodes[r][c].updateLines();
-				guiNodes[r][c].updateText();
 			}
 		}
 		for (int i = 0; i < guiOutputs.length; i++) {
 			guiOutputs[i].setOutput(chr.getOutput(i));
-			guiOutputs[i].updateLines();
-		}
-		if (isEvaluating()) {
-			setInputs(testInputs);
-		}
-	}
-	
-	public void unlockOutputs() {
-		relock.clear();
-		for (int i = 0; i < guiOutputs.length; i++) {
-			if (guiOutputs[i].isLocked()) {
-				guiOutputs[i].unlock();
-				relock.add(guiOutputs[i]);
-			}	
-		}
-	}
-	
-	public void relockOutputs() {
-		for (int i = 0; i < relock.size(); i++) {
-			relock.get(i).lock();
 		}
 	}
 	
-	public void setInputs(Object[] values) {
-		testInputs = values;
-		for (int i = 0; i < guiInputs.length; i++) {
-			guiInputs[i].setValue(values[i]);
-		}
-		updateValues();
-	}
-
-	public void updateValues() {
-		for (int i = 0; i < guiInputs.length; i++) {
-			guiInputs[i].updateText();
-		}
-		for (int c = 0; c < columns; c++) {
-			for (int r = 0; r < rows; r++) {
-				guiNodes[r][c].updateText();
+	public static boolean isAllowed(GUIGene source, GUIGene target) {
+		if (source instanceof GUINode) {
+			// if the source is a node, all inputs and some nodes are valid
+			if (target instanceof GUIInput) {
+				return true;
+			} else if (target instanceof GUINode) {
+				// target and source are nodes, let's look at levels back
+				Node t = ((GUINode) target).getNode(), s = ((GUINode) source).getNode();
+				if (s.getColumn() - t.getColumn() > 0 && s.getColumn() - t.getColumn() <= 1 /* TODO this should be levels back */) {
+					return true;
+				}
+				return false;
+			} else if (target instanceof GUIOutput) {
+				return false;
+			} else {
+				throw new ClassCastException("Target was neither GUINode nor GUIInput nor GUIOutput.");
+			}
+		} else if (source instanceof GUIOutput) {
+			// if the source is an output, any node or input is valid
+			if (target instanceof GUINode || target instanceof GUIInput) {
+				return true;
+			} else if (target instanceof GUIOutput) {
+				return false;
+			} else {
+				throw new ClassCastException("Target was neither GUINode nor GUIInput nor GUIOutput.");
 			}
 		}
-		for (int o = 0; o < guiOutputs.length; o++) {
-			guiOutputs[o].updateText();
-		}
-	}
-
-	/**
-	 * @return the evaluating attribute.
-	 */
-	public boolean isEvaluating() {
-		return parent.isEvaluating();
+		// if the source was neither node nor output, something bad is happening
+		throw new ClassCastException("Source was neither GUINode nor GUIOutput.");
 	}
 }
diff --git a/src/jcgp/gui/population/FunctionSelector.java b/src/jcgp/gui/population/FunctionSelector.java
index ac7a2c2..d96617c 100644
--- a/src/jcgp/gui/population/FunctionSelector.java
+++ b/src/jcgp/gui/population/FunctionSelector.java
@@ -58,7 +58,7 @@ public class FunctionSelector extends VBox {
 			l.addEventFilter(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() {
 				@Override
 				public void handle(MouseEvent event) {
-					target.setFunction(fs.getAllowedFunction(index));
+					//target.setFunction(fs.getAllowedFunction(index));
 					dismiss();
 				}
 			});
diff --git a/src/jcgp/gui/population/GUIGene.java b/src/jcgp/gui/population/GUIGene.java
index bae7647..eb7070c 100644
--- a/src/jcgp/gui/population/GUIGene.java
+++ b/src/jcgp/gui/population/GUIGene.java
@@ -7,33 +7,27 @@ import javafx.scene.shape.Circle;
 import javafx.scene.text.Font;
 import javafx.scene.text.Text;
 import javafx.scene.text.TextAlignment;
-import jcgp.backend.population.Connection;
 import jcgp.gui.constants.Constants;
 
+/**
+ * Defines the general behaviour of the visual representation of each chromosome gene.
+ * <br><br>
+ * In practice, this is subclass of {@code javafx.scene.Group} containing a {@code Circle}
+ * object and a {@code Text} object. Subclasses may add further elements to the group, for
+ * instance to display connection input and output sockets. 
+ * 
+ * @author Eduardo Pedroni
+ *
+ */
 public abstract class GUIGene extends Group {
 
-	public enum GUIGeneState {
-		NEUTRAL,
-		HOVER,
-		INDIRECT_HOVER,
-		ACTIVE_HOVER,
-		LOCKED_HOVER,
-		SOURCE,
-		VALID_TARGET,
-		NO_CHANGE_TARGET,
-		INVALID_TARGET
-	}
-	
-	protected Text text = new Text();
-	protected Circle mainCircle = new Circle(Constants.NODE_RADIUS, Paint.valueOf("white"));
+	private Text text = new Text();
+	protected final Circle mainCircle = new Circle(Constants.NODE_RADIUS, Paint.valueOf(Constants.NEUTRAL_COLOUR));
 	
-	private GUIGeneState state = GUIGeneState.NEUTRAL;
-
-	protected ChromosomePane parent;
-	
-	protected int locked = 0;
-
-	public GUIGene() {
+	/**
+	 * Initialises the {@code Text} and {@code Circle} objects so that all genes are standardised.
+	 */
+	protected GUIGene() {
 		text.setFont(Font.font("Arial", 12));
 		text.setTextOrigin(VPos.CENTER);
 		text.setTextAlignment(TextAlignment.CENTER);
@@ -42,41 +36,20 @@ public abstract class GUIGene extends Group {
 		text.setVisible(true);
 		
 		mainCircle.setStroke(Paint.valueOf("black"));
+		
+		getChildren().addAll(mainCircle, text);
 	}
 	
-	public void setState(GUIGeneState newState) {
-		state = newState;
-	}
-	
-	public GUIGeneState getState() {
-		return state;
-	}
-
-	public boolean isLocked() {
-		return locked > 0;
-	}
-	
-	public int getLocks() {
-		return locked;
+	/**
+	 * Sets the gene's text field.
+	 * 
+	 * @param newText the text string to be displayed.
+	 */
+	public void setText(String newText) {
+		text.setText(newText);
 	}
 	
-	protected abstract void setLocked(boolean value);
-	
-	public abstract void addLocks(int value);
-	
-	public abstract void removeLocks(int value);
-	
-	public abstract void updateLines();
-	
-	public abstract void setChangingConnection(Connection newConnection);
-	
-	public abstract Connection getChangingConnection();
-
-	public abstract void setConnectionStates(GUIGeneState newState);
-
-	public abstract void resetState();
-	
-	public abstract void setConnectionLine(GUIGene gene);
+	public abstract void mouseEnter();
+	public abstract void mouseExit();
 	
-	public abstract void updateText();
 }
diff --git a/src/jcgp/gui/population/GUIInput.java b/src/jcgp/gui/population/GUIInput.java
index 8b55a58..d29851e 100644
--- a/src/jcgp/gui/population/GUIInput.java
+++ b/src/jcgp/gui/population/GUIInput.java
@@ -1,233 +1,32 @@
 package jcgp.gui.population;
 
-import javafx.event.EventHandler;
-import javafx.scene.input.MouseDragEvent;
-import javafx.scene.input.MouseEvent;
 import javafx.scene.paint.Paint;
-import javafx.scene.shape.Circle;
-import jcgp.backend.population.Connection;
 import jcgp.backend.population.Input;
 import jcgp.gui.constants.Constants;
 
+/**
+ * 
+ * 
+ * @author Eduardo Pedroni
+ *
+ */
 public class GUIInput extends GUIGene {
 
-	private Input input;
-
-	public GUIInput(ChromosomePane parentRef, final Input input) {
-		super();
-		
-		this.parent = parentRef;
-		this.input = input;
-		
-		relocate(Constants.NODE_RADIUS,
-				(input.getIndex() * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS);
-		
-		updateText();
-
-		Circle outputSocket = new Circle(Constants.NODE_RADIUS, 0, Constants.SOCKET_RADIUS, Paint.valueOf("white"));
-		outputSocket.setId(String.valueOf(0));
-		outputSocket.setStroke(Paint.valueOf("black"));
-
-		getChildren().addAll(mainCircle, text, outputSocket);
-		
-		/*
-		 * Mouse event handlers on whole gene
-		 */
-		addEventFilter(MouseDragEvent.MOUSE_DRAG_ENTERED, new EventHandler<MouseDragEvent>() {
-			@Override
-			public void handle(MouseDragEvent event) {
-				// the drag has entered this node, react appropriately
-				// this happens even if we are the source of the drag
-				((GUIGene) event.getGestureSource()).setConnectionLine((GUIGene) event.getSource());
-				Connection source = ((GUIGene) event.getGestureSource()).getChangingConnection();
-				if (input == source) {
-					setState(GUIGeneState.NO_CHANGE_TARGET);
-				} else {
-					setState(GUIGeneState.VALID_TARGET);
-				}
-			}
-		});
-
-		addEventFilter(MouseDragEvent.MOUSE_DRAG_EXITED, new EventHandler<MouseDragEvent>() {
-			@Override
-			public void handle(MouseDragEvent event) {
-				// the drag has exited this node, react appropriately
-				// this happens even if we are the source of the drag
-				parent.setTarget(false);
-				if (event.isPrimaryButtonDown()) {
-					if (getState() == GUIGeneState.NO_CHANGE_TARGET) {
-						setState(GUIGeneState.INDIRECT_HOVER);
-					} else {
-						setState(GUIGeneState.NEUTRAL);
-						((GUIGene) event.getGestureSource()).setConnectionStates(GUIGeneState.INDIRECT_HOVER);
-					}
-				}
-			}
-
-		});
-
-		addEventFilter(MouseDragEvent.MOUSE_DRAG_RELEASED, new EventHandler<MouseDragEvent>() {
-			@Override
-			public void handle(MouseDragEvent event) {
-				GUIGene source = ((GUIGene) event.getGestureSource());
-				// set states to reflect the new situation
-				if (source.isLocked()) {
-					source.setState(GUIGeneState.HOVER);
-					source.setConnectionStates(GUIGeneState.HOVER);
-				} else {
-					source.setState(GUIGeneState.NEUTRAL);
-					source.setConnectionStates(GUIGeneState.NEUTRAL);
-				}
-				
-				// the user released the drag gesture on this node, react appropriately
-				if (source.isLocked()) {
-					// remove locks from the old connection, add the to the new
-					// note that the old connection may still have locks after this
-					parent.getGuiGene(source.getChangingConnection()).removeLocks(source.getLocks());
-					source.setChangingConnection(input);
-					addLocks(source.getLocks());
-				} else {
-					source.setChangingConnection(input);
-				}
-
-				source.updateLines();
-				setState(GUIGeneState.HOVER);			
-			}
-		});
-		
-		addEventFilter(MouseEvent.MOUSE_ENTERED, new EventHandler<MouseEvent>() {
-			@Override
-			public void handle(MouseEvent event) {
-				// cursor has entered this node without dragging, or it is dragging and this is the source
-				if (getState() == GUIGeneState.NEUTRAL) {
-					setState(GUIGeneState.HOVER);
-				}
-			}
-		});
-		
-		addEventFilter(MouseEvent.MOUSE_EXITED, new EventHandler<MouseEvent>() {
-			@Override
-			public void handle(MouseEvent event) {
-				// cursor has left this node without dragging, or it is dragging and this is the source
-				if (getState() == GUIGeneState.HOVER) {
-					setState(GUIGeneState.NEUTRAL);
-					setConnectionStates(GUIGeneState.NEUTRAL);
-				}
-			}
-		});
-	}
-	
-	@Override
-	public void setState(GUIGeneState newState) {
-		super.setState(newState);
-		
-		switch (newState) {
-		case ACTIVE_HOVER:
-			if (locked > 0) {
-				setState(GUIGeneState.LOCKED_HOVER);
-			} else {
-				mainCircle.setFill(Paint.valueOf(Constants.SOFT_HIGHLIGHT_COLOUR));
-			}
-			break;
-		case INVALID_TARGET:
-			mainCircle.setFill(Paint.valueOf(Constants.BAD_SELECTION_COLOUR));
-			break;
-		case LOCKED_HOVER:
-			mainCircle.setFill(Paint.valueOf(Constants.SOFT_HIGHLIGHT_COLOUR));
-			break;
-		case HOVER:
-			mainCircle.setFill(Paint.valueOf(Constants.MEDIUM_HIGHLIGHT_COLOUR));
-			break;
-		case INDIRECT_HOVER:
-			mainCircle.setFill(Paint.valueOf(Constants.SOFT_HIGHLIGHT_COLOUR));
-			break;
-		case NEUTRAL:
-			if (locked > 0) {
-				setState(GUIGeneState.HOVER);
-			} else {
-				mainCircle.setFill(Paint.valueOf(Constants.NEUTRAL_COLOUR));
-			}
-			break;
-		case NO_CHANGE_TARGET:
-			parent.setTarget(true);
-			mainCircle.setFill(Paint.valueOf(Constants.NEUTRAL_SELECTION_COLOUR));
-			break;
-		case SOURCE:
-			mainCircle.setFill(Paint.valueOf(Constants.MEDIUM_HIGHLIGHT_COLOUR));
-			break;
-		case VALID_TARGET:
-			parent.setTarget(true);
-			mainCircle.setFill(Paint.valueOf(Constants.GOOD_SELECTION_COLOUR));
-			break;
-		default:
-			break;
-		}
-		
-	}
-
 	/**
-	 * Set all connections to a given state.
-	 * 
-	 * @param newState the state to set connections to.
+	 * @param input
 	 */
-	@Override
-	public void setConnectionStates(GUIGeneState newState) {
-		// nothing
-	}
-
-	@Override
-	public void resetState() {
-		setState(GUIGeneState.NEUTRAL);
-	}
-
-	@Override
-	protected void setLocked(boolean value) {
-		locked += value ? 1 : -1;
-		setState(locked > 0 ? GUIGeneState.HOVER : GUIGeneState.ACTIVE_HOVER);
-	}
-
-	@Override
-	public void setChangingConnection(Connection newConnection) {
-		// do nothing
-	}
-
-	@Override
-	public Connection getChangingConnection() {
-		return null;
-	}
-
-	@Override
-	public void addLocks(int value) {
-		locked += value;
-		setState(locked > 0 ? GUIGeneState.HOVER : GUIGeneState.ACTIVE_HOVER);
-	}
-
-	@Override
-	public void updateLines() {
-		// nothing
+	public GUIInput(final Input input) {
+		super();
 	}
 
 	@Override
-	public void removeLocks(int value) {
-		locked -= value;
-		setState(locked > 0 ? GUIGeneState.HOVER : GUIGeneState.NEUTRAL);
+	public void mouseEnter() {
+		mainCircle.setFill(Paint.valueOf(Constants.SOFT_HIGHLIGHT_COLOUR));
 	}
 
 	@Override
-	public void setConnectionLine(GUIGene gene) {
-		// nothing
+	public void mouseExit() {
+		mainCircle.setFill(Paint.valueOf(Constants.NEUTRAL_COLOUR));
 	}
-
-	public void setValue(Object newValue) {
-		input.setValue(newValue);
-	}
-
-	@Override
-	public void updateText() {
-		if (parent.isEvaluating()) {
-			text.setText("I: " + input.getIndex() + "\n" + input.getValue().toString());
-		} else {
-			text.setText("I: " + input.getIndex());
-		}
-	}	
+	
 }
diff --git a/src/jcgp/gui/population/GUINode.java b/src/jcgp/gui/population/GUINode.java
index 4d420ea..7b59162 100644
--- a/src/jcgp/gui/population/GUINode.java
+++ b/src/jcgp/gui/population/GUINode.java
@@ -1,472 +1,38 @@
 package jcgp.gui.population;
 
-import javafx.event.EventHandler;
-import javafx.scene.control.Label;
-import javafx.scene.input.MouseDragEvent;
-import javafx.scene.input.MouseEvent;
 import javafx.scene.paint.Paint;
-import javafx.scene.shape.Circle;
-import javafx.scene.shape.Line;
-import jcgp.backend.function.Function;
-import jcgp.backend.population.Connection;
-import jcgp.backend.population.Input;
 import jcgp.backend.population.Node;
-import jcgp.backend.resources.Resources;
-import jcgp.gui.GUI;
 import jcgp.gui.constants.Constants;
 
 public class GUINode extends GUIGene {
 
-	private Line[] lines;
 	private Node node;
-	private Resources resources;
-	private int connectionIndex = 0;
 	
 
-	public GUINode(ChromosomePane parentRef, final Node node, Line[] connectionLines, final GUI gui) {
+	public GUINode(final Node node) {
 		super();
 		
 		// store references
-		this.parent = parentRef;
 		this.node = node;
-		this.lines = connectionLines;
-		this.resources = gui.getExperiment().getResources();
-		
-		// move the GUIGene to the right position
-		relocate(((node.getColumn() + 1) * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS,
-				(node.getRow() * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS);
-
-		// set the line ends correctly
-		updateLines();
-
-		final Label connectionNumber = new Label();
-		connectionNumber.setStyle("-fx-background-color:rgb(255, 255, 255); -fx-border-color:rgba(0, 0, 0, 0.5); ");
-		connectionNumber.setVisible(false);
-
-		Circle output = new Circle(Constants.NODE_RADIUS, 0, Constants.SOCKET_RADIUS, Paint.valueOf("white"));
-		output.setStroke(Paint.valueOf("black"));
-
-		updateText();
-
-		Circle[] sockets = new Circle[resources.arity()];
-		double angle, xPos, yPos;
-		for (int l = 0; l < sockets.length; l++) {
-			angle = (((l + 1) / ((double) (resources.arity() + 1))) * Constants.THETA) - (Constants.THETA / 2);
-			xPos = -Math.cos(angle) * Constants.NODE_RADIUS;
-			yPos = Math.sin(angle) * Constants.NODE_RADIUS;
-
-			sockets[l] = new Circle(xPos, yPos, Constants.SOCKET_RADIUS, Paint.valueOf("white"));
-			sockets[l].setId(String.valueOf(l));
-			sockets[l].setStroke(Paint.valueOf("black"));
-
-			final Circle s = sockets[l];
-			final int index = l;
-
-			/*
-			 * Mouse event handlers on sockets
-			 * 
-			 */
-			s.addEventFilter(MouseEvent.DRAG_DETECTED, new EventHandler<MouseEvent>() {
-				@Override
-				public void handle(MouseEvent event) {
-					// the mouse has been dragged out of the socket, this means a full drag is in progress
-					startFullDrag();
-				}
-			});
-
-			s.addEventFilter(MouseEvent.MOUSE_ENTERED, new EventHandler<MouseEvent>() {
-				@Override
-				public void handle(MouseEvent event) {
-					// user is hovering over connection socket
-					connectionNumber.setText("C: " + s.getId());
-					connectionNumber.relocate(s.getCenterX() + 5, s.getCenterY() - 10);
-					connectionNumber.setVisible(true);
-				}
-			});
-
-			s.addEventFilter(MouseEvent.MOUSE_EXITED, new EventHandler<MouseEvent>() {
-				@Override
-				public void handle(MouseEvent event) {
-					// user exits the connection socket
-					connectionNumber.setVisible(false);
-				}
-			});
-
-			s.addEventFilter(MouseEvent.MOUSE_PRESSED, new EventHandler<MouseEvent>() {
-				@Override
-				public void handle(MouseEvent event) {
-					// mouse was pressed on the socket
-					setState(GUIGeneState.SOURCE);
-					connectionIndex = index;
-				}
-			});
-
-			s.addEventFilter(MouseEvent.MOUSE_DRAGGED, new EventHandler<MouseEvent>() {
-				@Override
-				public void handle(MouseEvent event) {
-					if (!parent.isTarget()) {
-						lines[connectionIndex].setEndX(event.getX() + ((Circle) event.getSource()).getParent().getLayoutX());
-						lines[connectionIndex].setEndY(event.getY() + ((Circle) event.getSource()).getParent().getLayoutY());
-					}
-				}
-			});	
-
-			s.addEventFilter(MouseEvent.MOUSE_RELEASED, new EventHandler<MouseEvent>() {
-				@Override
-				public void handle(MouseEvent event) {					
-					if (event.isStillSincePress()) {
-						// mouse was released before dragging out of the socket
-						updateLine(index);
-						setState(GUIGeneState.HOVER);
-					} else if (getState() == GUIGeneState.SOURCE) {
-						// no connection has been made, fallback
-						resetState();
-						updateLines();
-					}
-				}
-			});
-		}
-
-		/*
-		 * Mouse event handlers on whole gene
-		 */
-		addEventFilter(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() {
-			@Override
-			public void handle(MouseEvent event) {
-				gui.bringFunctionSelector(event, (GUINode) event.getSource());
-			}
-		});
-		
-		addEventFilter(MouseDragEvent.MOUSE_DRAG_ENTERED, new EventHandler<MouseDragEvent>() {
-			@Override
-			public void handle(MouseDragEvent event) {
-				// the drag has entered this node, react appropriately
-				// this happens even if we are the source of the drag
-				if (isAllowed((GUIGene) event.getGestureSource(), (GUIGene) event.getSource())) {
-					((GUIGene) event.getGestureSource()).setConnectionLine((GUIGene) event.getSource());
-					
-					Connection source = ((GUIGene) event.getGestureSource()).getChangingConnection();
-					if (node == source) {
-						setState(GUIGeneState.NO_CHANGE_TARGET);
-					} else {
-						setState(GUIGeneState.VALID_TARGET);
-					}
-				} else {
-					setState(GUIGeneState.INVALID_TARGET);
-				}
-			}
-		});
-
-		addEventFilter(MouseDragEvent.MOUSE_DRAG_EXITED, new EventHandler<MouseDragEvent>() {
-			@Override
-			public void handle(MouseDragEvent event) {
-				// the drag has exited this node, react appropriately
-				// this happens even if we are the source of the drag
-				parent.setTarget(false);
-				if (event.isPrimaryButtonDown()) {
-					if (event.getGestureSource() == event.getSource()) {
-						setState(GUIGeneState.SOURCE);
-					} else {
-						if (getState() == GUIGeneState.NO_CHANGE_TARGET) {
-							setState(GUIGeneState.INDIRECT_HOVER);
-						} else {
-							setState(GUIGeneState.NEUTRAL);
-							((GUIGene) event.getGestureSource()).setConnectionStates(GUIGeneState.INDIRECT_HOVER);
-						}
-					}
-				}
-			}
-		});
-
-		addEventFilter(MouseDragEvent.MOUSE_DRAG_RELEASED, new EventHandler<MouseDragEvent>() {
-			@Override
-			public void handle(MouseDragEvent event) {
-				GUIGene source = ((GUIGene) event.getGestureSource());
-				// set states to reflect the new situation
-				if (source.isLocked()) {
-					source.setState(GUIGeneState.HOVER);
-					source.setConnectionStates(GUIGeneState.HOVER);
-				} else {
-					source.setState(GUIGeneState.NEUTRAL);
-					source.setConnectionStates(GUIGeneState.NEUTRAL);
-				}
-
-				// the user released the drag gesture on this node, react appropriately
-				if (isAllowed((GUIGene) event.getGestureSource(), (GUIGene) event.getSource())) {
-					if (source.isLocked()) {
-						// remove locks from the old connection, add the to setConnethe new
-						// note that the old connection may still have locks after this
-						parent.getGuiGene(source.getChangingConnection()).removeLocks(source.getLocks());
-						addLocks(source.getLocks());
-					} else {
-						if (source instanceof GUIOutput) {
-							source.resetState();
-						}
-					}
-					source.setChangingConnection(node);
-
-				}
-				source.updateLines();
-				setState(GUIGeneState.HOVER);
-			}
-		});
-
-		addEventFilter(MouseEvent.MOUSE_ENTERED, new EventHandler<MouseEvent>() {
-			@Override
-			public void handle(MouseEvent event) {
-				// cursor has entered this node without dragging, or it is dragging and this is the source
-				if (getState() == GUIGeneState.NEUTRAL) {
-					setState(GUIGeneState.HOVER);
-				} else if (locked > 0) {
-					setConnectionStates(GUIGeneState.LOCKED_HOVER);
-				}
-			}
-		});
-
-		addEventFilter(MouseEvent.MOUSE_EXITED, new EventHandler<MouseEvent>() {
-			@Override
-			public void handle(MouseEvent event) {
-				// cursor has left this node without dragging, or it is dragging and this is the source
-				if (getState() == GUIGeneState.HOVER && locked <= 0) {
-					setState(GUIGeneState.NEUTRAL);
-					setConnectionStates(GUIGeneState.NEUTRAL);
-				} else if (locked > 0) {
-					if (getState() == GUIGeneState.SOURCE || getState() == GUIGeneState.INVALID_TARGET) {
-						setConnectionStates(GUIGeneState.INDIRECT_HOVER);
-					} else {
-						setConnectionStates(GUIGeneState.HOVER);
-					}
-					
-				}
-			}
-		});
-
-		getChildren().addAll(mainCircle, text);
-		getChildren().addAll(sockets);
-		getChildren().addAll(output, connectionNumber);
-
-	}
-
-	@Override
-	public void setState(GUIGeneState newState) {
-		switch (newState) {
-		case ACTIVE_HOVER:
-			if (locked > 0) {
-				setState(GUIGeneState.LOCKED_HOVER);
-			} else {
-				mainCircle.setFill(Paint.valueOf(Constants.SOFT_HIGHLIGHT_COLOUR));
-				showLines(true);
-			}
-			setConnectionStates(GUIGeneState.ACTIVE_HOVER);
-			break;
-		case LOCKED_HOVER:
-			mainCircle.setFill(Paint.valueOf(Constants.SOFT_HIGHLIGHT_COLOUR));
-			break;
-		case INVALID_TARGET:
-			mainCircle.setFill(Paint.valueOf(Constants.BAD_SELECTION_COLOUR));
-			break;
-		case HOVER:
-			mainCircle.setFill(Paint.valueOf(Constants.MEDIUM_HIGHLIGHT_COLOUR));
-			showLines(true);
-			if (locked <= 0) {
-				setConnectionStates(GUIGeneState.INDIRECT_HOVER);
-			} else {
-				setConnectionStates(GUIGeneState.HOVER);
-			}
-			break;
-		case INDIRECT_HOVER:
-			mainCircle.setFill(Paint.valueOf(Constants.SOFT_HIGHLIGHT_COLOUR));
-			break;
-		case NEUTRAL:
-			if (locked > 0) {
-				setState(GUIGeneState.HOVER);
-			} else {
-				mainCircle.setFill(Paint.valueOf(Constants.NEUTRAL_COLOUR));
-				showLines(false);
-				if (getState() == GUIGeneState.ACTIVE_HOVER) {
-					setConnectionStates(GUIGeneState.NEUTRAL);
-				}
-			}
-			break;
-		case NO_CHANGE_TARGET:
-			parent.setTarget(true);
-			mainCircle.setFill(Paint.valueOf(Constants.NEUTRAL_SELECTION_COLOUR));
-			break;
-		case SOURCE:
-			mainCircle.setFill(Paint.valueOf(Constants.HARD_HIGHLIGHT_COLOUR));
-			break;
-		case VALID_TARGET:
-			parent.setTarget(true);
-			mainCircle.setFill(Paint.valueOf(Constants.GOOD_SELECTION_COLOUR));
-			break;
-		default:
-			break;
-		}
-
-		super.setState(newState);
 	}
 	
-	@Override
-	public Connection getChangingConnection() {
-		return node.getConnection(connectionIndex);
-	}
-
-	private boolean isAllowed(GUIGene source, GUIGene target) {
-		if (source instanceof GUINode) {
-			// if the source is a node, all inputs and some nodes are valid
-			if (target instanceof GUIInput) {
-				return true;
-			} else if (target instanceof GUINode) {
-				// target and source are nodes, let's look at levels back
-				Node t = ((GUINode) target).getNode(), s = ((GUINode) source).getNode();
-				if (s.getColumn() - t.getColumn() > 0 && s.getColumn() - t.getColumn() <= resources.levelsBack()) {
-					return true;
-				}
-				return false;
-			} else if (target instanceof GUIOutput) {
-				return false;
-			} else {
-				throw new ClassCastException("Target was neither GUINode nor GUIInput nor GUIOutput.");
-			}
-		} else if (source instanceof GUIOutput) {
-			// if the source is an output, any node or input is valid
-			if (target instanceof GUINode || target instanceof GUIInput) {
-				return true;
-			} else if (target instanceof GUIOutput) {
-				return false;
-			} else {
-				throw new ClassCastException("Target was neither GUINode nor GUIInput nor GUIOutput.");
-			}
-		}
-		// if the source was neither node nor output, something bad is happening
-		throw new ClassCastException("Source was neither GUINode nor GUIOutput.");
-	}
-
-
 	public Node getNode() {
 		return node;
 	}
 
-	/**
-	 * Place the end of the specified line on the output of the associated connection. 
-	 * 
-	 * @param index the line to be updated.
-	 */
-	public void updateLine(int index) {
-		if (node.getConnection(index) instanceof Node) {
-			int row = ((Node) node.getConnection(index)).getRow(), 
-					column = ((Node) node.getConnection(index)).getColumn();
-			lines[index].setEndX(((column + 1) * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + 2 * Constants.NODE_RADIUS);
-			lines[index].setEndY((row * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS);
-		} else if (node.getConnection(index) instanceof Input) {
-			int inputIndex = ((Input) node.getConnection(index)).getIndex();
-			lines[index].setEndX(2 * Constants.NODE_RADIUS);
-			lines[index].setEndY(inputIndex * (2 * Constants.NODE_RADIUS + Constants.SPACING) + Constants.NODE_RADIUS);
-		}
-	}
-
-	/**
-	 * Updates the end of all lines to match the associated connections. 
-	 */
-	@Override
-	public void updateLines() {
-		for (int c = 0; c < lines.length; c++) {
-			updateLine(c);
-		}
-	}
-
-	/**
-	 * Toggle visibility of all connection lines.
-	 * 
-	 * @param value whether to show the lines or not.
-	 */
-	private void showLines(boolean value) {
-		for (int i = 0; i < lines.length; i++) {
-			lines[i].setVisible(value);
-		}
-	}
-
-	@Override
-	public void setConnectionStates(GUIGeneState newState) {
-		for (int i = 0; i < lines.length; i++) {
-			parent.getGuiGene(node.getConnection(i)).setState(newState);
-		}
-	}
-
-	@Override
-	public void setChangingConnection(Connection newConnection) {
-		node.setConnection(connectionIndex, newConnection);
-		if (parent.isEvaluating()) {
-			parent.updateValues();
-		}
-	}
-
-
-	@Override
-	public void resetState() {
-		if (locked > 0) {
-			setState(GUIGeneState.HOVER);
-		} else {
-			setState(GUIGeneState.NEUTRAL);
-			setConnectionStates(GUIGeneState.NEUTRAL);
-		}
-
-	}
-
-	@Override
-	protected void setLocked(boolean value) {
-		locked += value ? 1 : -1;
-		setState(locked > 0 ? GUIGeneState.HOVER : GUIGeneState.ACTIVE_HOVER);
-
-		for (int i = 0; i < lines.length; i++) {
-			parent.getGuiGene(node.getConnection(i)).setLocked(value);
-		}
-	}
-
-	@Override
-	public void addLocks(int value) {
-		locked += value;
-		setState(locked > 0 ? GUIGeneState.HOVER : GUIGeneState.ACTIVE_HOVER);
-
-		for (int i = 0; i < lines.length; i++) {
-			parent.getGuiGene(node.getConnection(i)).addLocks(value);
-		}
+	void setNode(Node node2) {
+		// TODO Auto-generated method stub
+		
 	}
 
 	@Override
-	public void removeLocks(int value) {
-		locked -= value;
-		setState(locked > 0 ? GUIGeneState.HOVER : GUIGeneState.NEUTRAL);
-
-		for (int i = 0; i < lines.length; i++) {
-			parent.getGuiGene(node.getConnection(i)).removeLocks(value);
-		}
+	public void mouseEnter() {
+		mainCircle.setFill(Paint.valueOf(Constants.SOFT_HIGHLIGHT_COLOUR));
 	}
 
 	@Override
-	public void setConnectionLine(GUIGene gene) {
-		lines[connectionIndex].setEndX(gene.getLayoutX() + Constants.NODE_RADIUS);
-		lines[connectionIndex].setEndY(gene.getLayoutY());
-	}
-
-	public void updateText() {
-		if (parent.isEvaluating()) {
-			text.setText(node.getFunction() + "\n" + node.getValue().toString());
-		} else {
-			text.setText(node.getFunction().toString());
-		}
+	public void mouseExit() {
+		mainCircle.setFill(Paint.valueOf(Constants.NEUTRAL_COLOUR));
 	}
 	
-	public void setFunction(Function function) {
-		node.setFunction(function);
-		if (parent.isEvaluating()) {
-			parent.updateValues();
-		} else {
-			updateText();
-		}
-	}
-
-	public void setNode(Node newNode) {
-		node = newNode;
-	}
 }
diff --git a/src/jcgp/gui/population/GUIOutput.java b/src/jcgp/gui/population/GUIOutput.java
index d715138..ccc96c3 100644
--- a/src/jcgp/gui/population/GUIOutput.java
+++ b/src/jcgp/gui/population/GUIOutput.java
@@ -1,324 +1,31 @@
 package jcgp.gui.population;
 
-import javafx.event.EventHandler;
-import javafx.scene.control.Label;
-import javafx.scene.input.MouseDragEvent;
-import javafx.scene.input.MouseEvent;
 import javafx.scene.paint.Paint;
-import javafx.scene.shape.Circle;
-import javafx.scene.shape.Line;
-import jcgp.backend.population.Connection;
-import jcgp.backend.population.Input;
-import jcgp.backend.population.Node;
 import jcgp.backend.population.Output;
-import jcgp.gui.GUI;
 import jcgp.gui.constants.Constants;
 
 public class GUIOutput extends GUIGene {
 
-	private Line sourceLine;
 	private Output output;
 
-	public GUIOutput(ChromosomePane parentRef, final Output output, Line line, GUI gui) {
+	public GUIOutput(final Output output) {
 		super();
 		
-		this.parent = parentRef;
 		this.output = output;
-		this.sourceLine = line;
-
-		relocate(((gui.getExperiment().getResources().columns() + 1) * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS,
-				(output.getIndex() * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS);
-
-		// set the line ends correctly
-		updateLines();
-		updateText();
-
-		Circle socket = new Circle(-Constants.NODE_RADIUS, 0, Constants.SOCKET_RADIUS, Paint.valueOf("white"));
-		socket.setId(String.valueOf(0));
-		socket.setStroke(Paint.valueOf("black"));
-
-		final Label connectionLabel = new Label("S");
-		connectionLabel.setStyle("-fx-background-color:rgb(255, 255, 255); -fx-border-color:rgba(0, 0, 0, 0.5); ");
-		connectionLabel.relocate(socket.getCenterX() + 5, socket.getCenterY() - 10);
-		connectionLabel.setVisible(false);
-
-		/*
-		 * Mouse event handlers on sockets
-		 * 
-		 */
-		socket.addEventFilter(MouseEvent.DRAG_DETECTED, new EventHandler<MouseEvent>() {
-			@Override
-			public void handle(MouseEvent event) {
-				// the mouse has been dragged out of the socket, this means a full drag is in progress
-				startFullDrag();
-			}
-		});
-
-		socket.addEventFilter(MouseEvent.MOUSE_ENTERED, new EventHandler<MouseEvent>() {
-			@Override
-			public void handle(MouseEvent event) {
-				// user is hovering over connection socket
-				connectionLabel.setVisible(true);
-			}
-		});
-
-		socket.addEventFilter(MouseEvent.MOUSE_EXITED, new EventHandler<MouseEvent>() {
-			@Override
-			public void handle(MouseEvent event) {
-				// user exits the connection socket
-				connectionLabel.setVisible(false);
-			}
-		});
-
-		socket.addEventFilter(MouseEvent.MOUSE_PRESSED, new EventHandler<MouseEvent>() {
-			@Override
-			public void handle(MouseEvent event) {
-				// mouse was pressed on the socket
-				setState(GUIGeneState.SOURCE);
-			}
-		});
-
-		socket.addEventFilter(MouseEvent.MOUSE_DRAGGED, new EventHandler<MouseEvent>() {
-			@Override
-			public void handle(MouseEvent event) {
-				if (!parent.isTarget()) {
-					sourceLine.setEndX(event.getX() + ((Circle) event.getSource()).getParent().getLayoutX());
-					sourceLine.setEndY(event.getY() + ((Circle) event.getSource()).getParent().getLayoutY());
-				}
-				
-			}
-		});	
-
-		socket.addEventFilter(MouseEvent.MOUSE_RELEASED, new EventHandler<MouseEvent>() {
-			@Override
-			public void handle(MouseEvent event) {
-				if (event.isStillSincePress()) {
-					// mouse was released before dragging out of the socket
-					updateLines();
-					setState(GUIGeneState.HOVER);
-				} else if (getState() == GUIGeneState.SOURCE) {
-					// no connection has been made, fallback
-					resetState();
-					updateLines();
-				}
-				
-			}
-		});
-
-
-		/*
-		 * Mouse event handlers on whole gene
-		 */
-		addEventFilter(MouseDragEvent.MOUSE_DRAG_ENTERED, new EventHandler<MouseDragEvent>() {
-			@Override
-			public void handle(MouseDragEvent event) {
-				// the drag has entered this node, react appropriately
-				setState(GUIGeneState.INVALID_TARGET);
-			}
-		});
-
-		addEventFilter(MouseDragEvent.MOUSE_DRAG_EXITED, new EventHandler<MouseDragEvent>() {
-			@Override
-			public void handle(MouseDragEvent event) {
-				// the drag has exited this node, react appropriately
-				// this happens even if we are the source of the drag
-				if (event.isPrimaryButtonDown()) {
-					if (event.getGestureSource() == event.getSource()) {
-						setState(GUIGeneState.SOURCE);
-					} else {
-						setState(isLocked() ? GUIGeneState.HOVER : GUIGeneState.NEUTRAL);
-					}
-				}
-			}
-		});
-
-		addEventFilter(MouseDragEvent.MOUSE_DRAG_RELEASED, new EventHandler<MouseDragEvent>() {
-			@Override
-			public void handle(MouseDragEvent event) {
-				// making a connection to an output is illegal
-				// set states to reflect the new situation
-				GUIGene source = ((GUIGene) event.getGestureSource());
-				
-				if (source.isLocked()) {
-					source.setState(GUIGeneState.HOVER);
-					source.setConnectionStates(GUIGeneState.HOVER);
-				} else {
-					source.setState(GUIGeneState.NEUTRAL);
-					source.setConnectionStates(GUIGeneState.NEUTRAL);
-				}
-				
-				source.updateLines();
-				setState(GUIGeneState.HOVER);
-			}
-		});
-
-
-		addEventFilter(MouseEvent.MOUSE_ENTERED, new EventHandler<MouseEvent>() {
-			@Override
-			public void handle(MouseEvent event) {
-				// cursor has entered this node without dragging, or it is dragging and this is the source
-				if (getState() == GUIGeneState.NEUTRAL) {
-					setState(GUIGeneState.HOVER);
-				}
-			}
-		});
-
-		addEventFilter(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() {
-			@Override
-			public void handle(MouseEvent event) {
-				setLocked(!isLocked());
-			}
-		});
-		
-		addEventFilter(MouseEvent.MOUSE_EXITED, new EventHandler<MouseEvent>() {
-			@Override
-			public void handle(MouseEvent event) {
-				// cursor has left this node without dragging, or it is dragging and this is the source
-				if (getState() == GUIGeneState.HOVER && !isLocked()) {
-					setState(GUIGeneState.NEUTRAL);
-					setConnectionStates(GUIGeneState.NEUTRAL);
-				}
-			}
-		});
-
-
-		getChildren().addAll(mainCircle, text, socket, connectionLabel);
-		
 	}
 
-	@Override
-	public void setState(GUIGeneState newState) {
-		super.setState(newState);
+	void setOutput(Output output2) {
+		// TODO Auto-generated method stub
 		
-		switch (newState) {
-		case ACTIVE_HOVER:
-			break;
-		case INVALID_TARGET:
-			mainCircle.setFill(Paint.valueOf(Constants.BAD_SELECTION_COLOUR));
-			break;
-		case HOVER:
-			mainCircle.setFill(Paint.valueOf(Constants.MEDIUM_HIGHLIGHT_COLOUR));
-			sourceLine.setVisible(true);
-			if (!isLocked()) {
-				setConnectionStates(GUIGeneState.ACTIVE_HOVER);
-			}
-			break;
-		case INDIRECT_HOVER:
-			mainCircle.setFill(Paint.valueOf(Constants.SOFT_HIGHLIGHT_COLOUR));
-			break;
-		case NEUTRAL:
-			mainCircle.setFill(Paint.valueOf(Constants.NEUTRAL_COLOUR));
-			sourceLine.setVisible(false);
-			break;
-		case NO_CHANGE_TARGET:
-			mainCircle.setFill(Paint.valueOf(Constants.NEUTRAL_SELECTION_COLOUR));
-			break;
-		case SOURCE:
-			mainCircle.setFill(Paint.valueOf(Constants.HARD_HIGHLIGHT_COLOUR));
-			setConnectionStates(GUIGeneState.NEUTRAL);
-			setConnectionStates(GUIGeneState.INDIRECT_HOVER);
-			break;
-		case VALID_TARGET:
-			mainCircle.setFill(Paint.valueOf(Constants.GOOD_SELECTION_COLOUR));
-			break;
-		default:
-			break;
-		}
-	}
-	
-	@Override
-	public void updateLines() {
-		if (output.getSource() instanceof Node) {
-			int row = ((Node) output.getSource()).getRow(), 
-					column = ((Node) output.getSource()).getColumn();
-			sourceLine.setEndX(((column + 1) * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + 2 * Constants.NODE_RADIUS);
-			sourceLine.setEndY((row * (2 * Constants.NODE_RADIUS + Constants.SPACING)) + Constants.NODE_RADIUS);
-		} else if (output.getSource() instanceof Input) {
-			int inputIndex = ((Input) output.getSource()).getIndex();
-			sourceLine.setEndX(2 * Constants.NODE_RADIUS);
-			sourceLine.setEndY(inputIndex * (2 * Constants.NODE_RADIUS + Constants.SPACING) + Constants.NODE_RADIUS);
-		}
-	}
-
-	@Override
-	public void setConnectionStates(GUIGeneState newState) {
-		parent.getGuiGene(output.getSource()).setState(newState);
 	}
 
 	@Override
-	public void resetState() {
-		if (locked > 0) {
-			setState(GUIGeneState.HOVER);
-			setConnectionStates(GUIGeneState.HOVER);
-		} else {
-			setState(GUIGeneState.NEUTRAL);
-			setConnectionStates(GUIGeneState.NEUTRAL);
-		}
+	public void mouseEnter() {
+		mainCircle.setFill(Paint.valueOf(Constants.SOFT_HIGHLIGHT_COLOUR));
 	}
 
 	@Override
-	protected void setLocked(boolean value) {
-		locked += value ? 1 : -1;
-		setConnectionStates(value ? GUIGeneState.HOVER : GUIGeneState.ACTIVE_HOVER);
-
-		parent.getGuiGene(output.getSource()).setLocked(value);
-
-	}
-
-	@Override
-	public void setChangingConnection(Connection newConnection) {
-		output.setSource(newConnection);	
-		updateText();
-	}
-
-	@Override
-	public Connection getChangingConnection() {
-		return output.getSource();
-	}
-
-	@Override
-	public void addLocks(int value) {
-		locked += value;
-	}
-
-	@Override
-	public void removeLocks(int value) {
-		locked -= value;
+	public void mouseExit() {
+		mainCircle.setFill(Paint.valueOf(Constants.NEUTRAL_COLOUR));
 	}
-
-	@Override
-	public void setConnectionLine(GUIGene gene) {
-		sourceLine.setEndX(gene.getLayoutX() + Constants.NODE_RADIUS);
-		sourceLine.setEndY(gene.getLayoutY());	
-	}
-	
-	public void unlock() {
-		if (isLocked()) {
-			setLocked(false);
-			setState(GUIGeneState.NEUTRAL);
-			setConnectionStates(GUIGeneState.NEUTRAL);
-		}
-	}
-
-	public void lock() {
-		if (!isLocked()) {
-			setState(GUIGeneState.HOVER);
-			setLocked(true);
-		}
-	}
-
-	@Override
-	public void updateText() {
-		if (parent.isEvaluating()) {
-			text.setText("O: " + output.getIndex() + "\n" + output.getSource().getValue().toString());
-		} else {
-			text.setText("O: " + output.getIndex());
-		}
-		
-	}
-
-	public void setOutput(Output newOutput) {
-		output = newOutput;
-	}
-
 }
diff --git a/src/jcgp/gui/population/PopulationPane.java b/src/jcgp/gui/population/PopulationPane.java
index 4b1b7f8..31f6c33 100644
--- a/src/jcgp/gui/population/PopulationPane.java
+++ b/src/jcgp/gui/population/PopulationPane.java
@@ -43,25 +43,13 @@ public class PopulationPane extends TabPane {
 		}
 	}
 	
-	public void unlockOutputs() {
-		for (int i = 0; i < getTabs().size(); i++) {
-			((ChromosomePane) getTabs().get(i).getContent()).unlockOutputs();
-		}
-	}
-	
-	public void relockOutputs() {
-		for (int i = 0; i < getTabs().size(); i++) {
-			((ChromosomePane) getTabs().get(i).getContent()).relockOutputs();
-		}
-	}
-	
 	public void evaluateTestCase(TestCase<Object> testCase) {
 		if (gui.getExperiment().getProblem() instanceof TestCaseProblem && testCase != null) {
 			currentTestCase = testCase;
 			if (testCase.getInputs().length == gui.getExperiment().getResources().inputs()) {
 				evaluating = true;
 				for (int i = 0; i < getTabs().size(); i++) {
-					((ChromosomePane) getTabs().get(i).getContent()).setInputs(testCase.getInputs());
+					//((ChromosomePane) getTabs().get(i).getContent()).setInputs(testCase.getInputs());
 				}
 			} else {
 				throw new IllegalArgumentException("Test case has " + testCase.getInputs().length
@@ -73,7 +61,7 @@ public class PopulationPane extends TabPane {
 	public void hideValues() {
 		evaluating = false;
 		for (int i = 0; i < getTabs().size(); i++) {
-			((ChromosomePane) getTabs().get(i).getContent()).updateValues();
+			//((ChromosomePane) getTabs().get(i).getContent()).updateValues();
 		}
 	}