Visual feedback for parameters implemented.

6 files changed, 245 insertions, 104 deletions

diff --git a/src/jcgp/gui/GUI.java b/src/jcgp/gui/GUI.java
index 7e7f385..0902b21 100644
--- a/src/jcgp/gui/GUI.java
+++ b/src/jcgp/gui/GUI.java
@@ -22,16 +22,16 @@ public class GUI extends Application {
 	 * (no hovering, clicking, dragging or any other form of interaction). */
 	public static final String NEUTRAL_COLOUR = "#FFFFFF";
 	public static final String HARD_HIGHLIGHT_COLOUR = "#5496FF";
-	// 89AAD6
 	public static final String MEDIUM_HIGHLIGHT_COLOUR = "#75BAFF";
 	public static final String SOFT_HIGHLIGHT_COLOUR = "#C7DFFF";
-	// BDFFC2
-	public static final String GOOD_SELECTION_COLOUR = "#38C25B";
-	// FBFFB8
-	public static final String NEUTRAL_SELECTION_COLOUR = "#EDEB72";
-	// FF9C9C
-	public static final String BAD_SELECTION_COLOUR = "#F53D3D";
 	
+	public static final String GOOD_SELECTION_COLOUR = "#38C25B";
+	public static final String NEUTRAL_SELECTION_COLOUR = "#FFEF73";
+	public static final String BAD_SELECTION_COLOUR = "#FF5C5C";
+
+	public static final String INVALID_PARAMETER_STYLE = "-fx-border-color: C9C9C9; -fx-border-radius: 2; -fx-padding: 0; -fx-background-color: " + BAD_SELECTION_COLOUR;
+	public static final String WARNING_PARAMETER_STYLE = "-fx-border-color: C9C9C9; -fx-border-radius: 2; -fx-padding: 0; -fx-background-color: " + NEUTRAL_SELECTION_COLOUR;
+	public static final String VALID_PARAMETER_STYLE = "-fx-border-color: C9C9C9; -fx-border-radius: 2; -fx-padding: 0; -fx-background-color: " + NEUTRAL_COLOUR;
 	
 	/* Sizes and distances */
     public static final double RESIZE_MARGIN = 5.0;
@@ -71,7 +71,7 @@ public class GUI extends Application {
 	
 	public static void main(String[] args) {
 		cgp = new JCGP();
-		resources = cgp.getResources();		
+		resources = cgp.getResources();	
 		
 		launch();
 	}
@@ -166,17 +166,20 @@ public class GUI extends Application {
 	public void disableChromosomePanes(boolean value) {
 		chromosomeTabs.setDisable(value);
 	}
+	
+	public void disable(boolean value) {
+		chromosomeTabs.setDisable(value);
+		settings.disableSettings(value);
+	}
 
 	public void playPause() {
 		if (!evolving) {
-			settings.disableSettings(true);
-			disableChromosomePanes(true);
+			disable(true);
 			unlockOutputs();
 			evolving = true;
 			cgpService.restart();
 		} else {
-			settings.disableSettings(false);
-			disableChromosomePanes(false);
+			disable(false);
 			updateNodeGrids();
 			evolving = false;
 			cgpService.cancel();
@@ -201,11 +204,8 @@ public class GUI extends Application {
 		}
 	}
 	
-	public void resetCGP() {
-		cgp.remakePopulation();
+	public void reset() {
+		cgp.reset();
 		makeChromosomeTabPane();
-		
-		resources.set("currentGen", 1);
-		resources.set("currentRun", 1);
 	}
 }
diff --git a/src/jcgp/gui/settings/SettingsPane.java b/src/jcgp/gui/settings/SettingsPane.java
index 61011aa..41b1bba 100644
--- a/src/jcgp/gui/settings/SettingsPane.java
+++ b/src/jcgp/gui/settings/SettingsPane.java
@@ -1,9 +1,6 @@
 package jcgp.gui.settings;
 
 import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.Map;
-import java.util.Map.Entry;
 
 import javafx.event.ActionEvent;
 import javafx.event.EventHandler;
@@ -37,11 +34,15 @@ public class SettingsPane extends AnchorPane {
 	private VBox bpPane, eaPane, mutatorPane, ffPane, nfPane;
 	private ArrayList<GUIParameter> parameters = new ArrayList<GUIParameter>();
 	
+	private GUI gui;
+	
 	private boolean dragging = false;
 	
 	public SettingsPane(JCGP cgp, GUI gui) {
 		super();
 		
+		this.gui = gui;
+		
 		setResizeListeners();
 		
 		mainContainer = new VBox(8);
@@ -84,8 +85,7 @@ public class SettingsPane extends AnchorPane {
 		
 		bpPane.getChildren().add(header);
 		
-		GUIParameter rows = GUIParameter.create((IntegerParameter) cgp.getResources().getParameter("rows"));
-		parameters.add(rows);
+		parameters.add(GUIParameter.create((IntegerParameter) cgp.getResources().getParameter("rows")));
 		parameters.add(GUIParameter.create((IntegerParameter) cgp.getResources().getParameter("columns")));
 		parameters.add(GUIParameter.create((IntegerParameter) cgp.getResources().getParameter("inputs")));
 		parameters.add(GUIParameter.create((IntegerParameter) cgp.getResources().getParameter("outputs")));
@@ -98,14 +98,13 @@ public class SettingsPane extends AnchorPane {
 		parameters.add(GUIParameter.create((IntegerParameter) cgp.getResources().getParameter("currentGen")));
 		parameters.add(GUIParameter.create((IntegerParameter) cgp.getResources().getParameter("currentRun")));				
 		
+		parameters.add(GUIParameter.create((IntegerParameter) cgp.getResources().getParameter("maxFitness")));
 		parameters.add(GUIParameter.create((IntegerParameter) cgp.getResources().getParameter("seed")));
 		parameters.add(GUIParameter.create((IntegerParameter) cgp.getResources().getParameter("report")));
 		
 		bpPane.getChildren().addAll(parameters);
 		
 		mainContainer.getChildren().add(bpPane);
-		
-		
 	}
 
 	private void initialiseEAParameters(final JCGP cgp) {
@@ -122,8 +121,9 @@ public class SettingsPane extends AnchorPane {
 		
 		final VBox eaParameters = new VBox();
 		eaParameters.setSpacing(2);
+		
 		if (cgp.getEvolutionaryAlgorithm().getLocalParameters() != null) {
-			refreshParameters(cgp.getEvolutionaryAlgorithm().getLocalParameters().entrySet().iterator(), eaParameters);
+			refreshParameters(cgp.getEvolutionaryAlgorithm().getLocalParameters(), eaParameters);
 		}
 		
 		eaCBox.setOnAction(new EventHandler<ActionEvent>() {
@@ -131,7 +131,7 @@ public class SettingsPane extends AnchorPane {
 			public void handle(ActionEvent event) {
 				cgp.setEvolutionaryAlgorithm(eaCBox.getSelectionModel().getSelectedIndex());
 				if (eaCBox.getSelectionModel().getSelectedItem().getLocalParameters() != null) {
-					refreshParameters(eaCBox.getSelectionModel().getSelectedItem().getLocalParameters().entrySet().iterator(), eaParameters);
+					refreshParameters(eaCBox.getSelectionModel().getSelectedItem().getLocalParameters(), eaParameters);
 				}
 			}
 		});
@@ -156,7 +156,7 @@ public class SettingsPane extends AnchorPane {
 		final VBox mutatorParameters = new VBox();
 		mutatorParameters.setSpacing(2);
 		if (cgp.getEvolutionaryAlgorithm().getLocalParameters() != null) {
-			refreshParameters(cgp.getMutator().getLocalParameters().entrySet().iterator(), mutatorParameters);
+			refreshParameters(cgp.getMutator().getLocalParameters(), mutatorParameters);
 		}
 		
 		mutatorCBox.setOnAction(new EventHandler<ActionEvent>() {
@@ -164,7 +164,7 @@ public class SettingsPane extends AnchorPane {
 			public void handle(ActionEvent event) {
 				cgp.setEvolutionaryAlgorithm(mutatorCBox.getSelectionModel().getSelectedIndex());
 				if (mutatorCBox.getSelectionModel().getSelectedItem().getLocalParameters() != null) {
-					refreshParameters(mutatorCBox.getSelectionModel().getSelectedItem().getLocalParameters().entrySet().iterator(), mutatorParameters);
+					refreshParameters(mutatorCBox.getSelectionModel().getSelectedItem().getLocalParameters(), mutatorParameters);
 				}			
 			}
 		});
@@ -188,7 +188,7 @@ public class SettingsPane extends AnchorPane {
 		final VBox ffParameters = new VBox();
 		ffParameters.setSpacing(2);
 		if (cgp.getFitnessFunction().getLocalParameters() != null) {
-			refreshParameters(cgp.getFitnessFunction().getLocalParameters().entrySet().iterator(), ffParameters);
+			refreshParameters(cgp.getFitnessFunction().getLocalParameters(), ffParameters);
 		}
 		
 		ffCBox.setOnAction(new EventHandler<ActionEvent>() {
@@ -196,7 +196,7 @@ public class SettingsPane extends AnchorPane {
 			public void handle(ActionEvent event) {
 				cgp.setEvolutionaryAlgorithm(ffCBox.getSelectionModel().getSelectedIndex());
 				if (ffCBox.getSelectionModel().getSelectedItem().getLocalParameters() != null) {
-					refreshParameters(ffCBox.getSelectionModel().getSelectedItem().getLocalParameters().entrySet().iterator(), ffParameters);
+					refreshParameters(ffCBox.getSelectionModel().getSelectedItem().getLocalParameters(), ffParameters);
 				}		
 			}
 		});
@@ -244,8 +244,8 @@ public class SettingsPane extends AnchorPane {
 			@Override
 			public void handle(ActionEvent event) {				
 				if (play.getText() == "Run") {
-					if (applyChanges()) {
-						gui.resetCGP();
+					if (isResetRequired()) {
+						resetExperiment();
 					}
 					play.setText("Pause");
 				} else {
@@ -260,8 +260,8 @@ public class SettingsPane extends AnchorPane {
 		step.setOnAction(new EventHandler<ActionEvent>() {
 			@Override
 			public void handle(ActionEvent event) {
-				if (applyChanges()) {
-					gui.resetCGP();
+				if (isResetRequired()) {
+					resetExperiment();
 				}
 				gui.step();
 			}
@@ -284,16 +284,15 @@ public class SettingsPane extends AnchorPane {
 	 * @param cgp
 	 * @param vb
 	 */
-	private void refreshParameters(Iterator<Entry<String, Parameter>> it, VBox vb) {
+	private void refreshParameters(Parameter[] newParameters, VBox vb) {
 		parameters.removeAll(vb.getChildren());
 		vb.getChildren().clear();
-	    while (it.hasNext()) {
-	        Parameter parameter = ((Map.Entry<String, Parameter>) it.next()).getValue();
-	        GUIParameter gp = GUIParameter.create(parameter);
+		for (int i = 0; i < newParameters.length; i++) {
+	        GUIParameter gp = GUIParameter.create(newParameters[i]);
 	        
 	        parameters.add(gp);
         	vb.getChildren().add(gp);
-	    }
+		}
 	}
 	
 	private void refreshFunctions(final FunctionSet fs, VBox vb) {
@@ -378,15 +377,22 @@ public class SettingsPane extends AnchorPane {
 	 * 
 	 * @return true if the experiment needs to be reset, false otherwise.
 	 */
-	private boolean applyChanges() {
+	private boolean isResetRequired() {
 		boolean reset = false;
-		
 		for (GUIParameter parameter : parameters) {
-			reset |= parameter.applyChange();
+			reset |= parameter.requiresReset();
 		}
-		
+		System.out.println("reset: " + reset);
 		return reset;
 	}
 	
+	private void resetExperiment() {
+		for (GUIParameter parameter : parameters) {
+			parameter.applyValue();
+		}
+		gui.reset();
+		
+	}
+	
 	
 }
diff --git a/src/jcgp/gui/settings/parameters/GUIBooleanParameter.java b/src/jcgp/gui/settings/parameters/GUIBooleanParameter.java
index 8acd6dd..da564f7 100644
--- a/src/jcgp/gui/settings/parameters/GUIBooleanParameter.java
+++ b/src/jcgp/gui/settings/parameters/GUIBooleanParameter.java
@@ -1,46 +1,71 @@
 package jcgp.gui.settings.parameters;
 
+import javafx.beans.value.ChangeListener;
+import javafx.beans.value.ObservableValue;
 import javafx.scene.control.CheckBox;
 import jcgp.backend.parameters.BooleanParameter;
+import jcgp.backend.parameters.ParameterStatus;
+import jcgp.gui.GUI;
 
 public class GUIBooleanParameter extends GUIParameter {
 	
-	GUIBooleanParameter(BooleanParameter parameter) {
+	private boolean originalValue;
+	
+	GUIBooleanParameter(final BooleanParameter parameter) {
 		super();
 		
 		this.parameter = parameter;
 		
-		value = new CheckBox(parameter.getName());
-		((CheckBox) value).setSelected(parameter.get());
+		originalValue = parameter.get();
+		
+		valueControl = new CheckBox(parameter.getName());
+		((CheckBox) valueControl).setSelected(parameter.get());
 		
-		value.setDisable(parameter.isMonitor());
+		valueControl.setDisable(parameter.isMonitor());
 		
 		if (parameter.isMonitor()) {
 			makeLightBinding();
-			System.out.println("light binding made for " + name);
+		} else {
+			((CheckBox) valueControl).selectedProperty().addListener(new ChangeListener<Boolean>() {
+				@Override
+				public void changed(
+						ObservableValue<? extends Boolean> observable,
+						Boolean oldValue, Boolean newValue) {
+					parameter.set(newValue);
+					if (parameter.getStatus() == ParameterStatus.INVALID) {
+						valueControl.setStyle(GUI.INVALID_PARAMETER_STYLE);
+						valueControl.setTooltip(tooltip);
+						tooltip.setText(parameter.getStatus().getDetails());
+					} else if (parameter.getStatus() == ParameterStatus.WARNING) {
+						valueControl.setStyle(GUI.WARNING_PARAMETER_STYLE);
+						valueControl.setTooltip(tooltip);
+						tooltip.setText(parameter.getStatus().getDetails());
+					} else {
+						valueControl.setStyle(GUI.VALID_PARAMETER_STYLE);
+						valueControl.setTooltip(null);
+					}
+				}
+			});
 		}
 		
-		getChildren().add(value);
+		getChildren().add(valueControl);
 	}
 
 	@Override
 	public void refreshValue() {
-		if (!((CheckBox) value).selectedProperty().isBound()) {
-			((CheckBox) value).setSelected(((BooleanParameter) parameter).get());
+		if (!((CheckBox) valueControl).selectedProperty().isBound()) {
+			((CheckBox) valueControl).setSelected(((BooleanParameter) parameter).get());
 		}
-		
 	}
-
+	
 	@Override
-	public boolean applyChange() {
-		if (((CheckBox) value).isSelected() != ((BooleanParameter) parameter).get() && (!parameter.isMonitor())) {
-			// apply value
-			((BooleanParameter) parameter).set(((CheckBox) value).isSelected());
-			if (parameter.isCritical()) {
-				return true;
-			}
-		}
-		return false;
+	public boolean requiresReset() {
+		return parameter.isCritical() && ((BooleanParameter) parameter).get() != originalValue;
+	}
+	
+	@Override
+	public void applyValue() {
+		originalValue = ((BooleanParameter) parameter).get();
 	}
 	
 }
diff --git a/src/jcgp/gui/settings/parameters/GUIDoubleParameter.java b/src/jcgp/gui/settings/parameters/GUIDoubleParameter.java
index 4b74c6e..a1b4526 100644
--- a/src/jcgp/gui/settings/parameters/GUIDoubleParameter.java
+++ b/src/jcgp/gui/settings/parameters/GUIDoubleParameter.java
@@ -1,51 +1,104 @@
 package jcgp.gui.settings.parameters;
 
+import javafx.beans.value.ChangeListener;
+import javafx.beans.value.ObservableValue;
+import javafx.event.EventHandler;
 import javafx.geometry.Pos;
 import javafx.scene.control.TextField;
+import javafx.scene.input.KeyEvent;
 import javafx.scene.layout.Priority;
 import javafx.scene.text.Text;
 import jcgp.backend.parameters.DoubleParameter;
+import jcgp.backend.parameters.ParameterStatus;
 import jcgp.gui.GUI;
 
 public class GUIDoubleParameter extends GUIParameter {
 	
-	GUIDoubleParameter(DoubleParameter parameter) {
+	private double originalValue;
+	
+	GUIDoubleParameter(final DoubleParameter parameter) {
 		super();
 		
 		this.parameter = parameter;
 		
+		originalValue = parameter.get();
+		
 		name = new Text(parameter.getName());
-		value = new TextField(String.valueOf(parameter.get()));
+		valueControl = new TextField(String.valueOf(parameter.get()));
+		valueControl.setStyle(GUI.VALID_PARAMETER_STYLE);
 		
-		((TextField) value).setAlignment(Pos.CENTER_RIGHT);
+		((TextField) valueControl).setAlignment(Pos.CENTER_RIGHT);
 		
-		setHgrow(value, Priority.ALWAYS);
+		setHgrow(valueControl, Priority.ALWAYS);
 		
 		name.setWrappingWidth(GUI.WRAP_WIDTH);
 		
-		((TextField) value).setEditable(!parameter.isMonitor());
+		((TextField) valueControl).setEditable(!parameter.isMonitor());
 		
+		// bind if monitor, else set changelistener
 		if (parameter.isMonitor()) {
 			makeLightBinding();
+		} else {
+			valueControl.addEventFilter(KeyEvent.KEY_TYPED, new EventHandler<KeyEvent>() {
+				public void handle( KeyEvent t ) {
+					char ch = t.getCharacter().toCharArray()[t.getCharacter().toCharArray().length - 1];
+					if (!((ch >= '0' && ch <= '9') || (ch == '.' && !((TextField) valueControl).getText().contains(".")))) {
+						t.consume();
+					}
+				}
+			});
+			((TextField) valueControl).textProperty().addListener(new ChangeListener<String>() {
+				@Override
+				public void changed(
+						ObservableValue<? extends String> observable,
+						String oldValue, String newValue) {
+					if (!newValue.isEmpty()) {
+						parameter.set(Double.parseDouble(newValue));
+						if (parameter.getStatus() == ParameterStatus.INVALID) {
+							valueControl.setStyle(GUI.INVALID_PARAMETER_STYLE);
+							valueControl.setTooltip(tooltip);
+							tooltip.setText(parameter.getStatus().getDetails());
+						} else if (parameter.getStatus() == ParameterStatus.WARNING) {
+							valueControl.setStyle(GUI.WARNING_PARAMETER_STYLE);
+							valueControl.setTooltip(tooltip);
+							tooltip.setText(parameter.getStatus().getDetails());
+						} else {
+							valueControl.setStyle(GUI.VALID_PARAMETER_STYLE);
+							valueControl.setTooltip(null);
+						}
+					}
+
+				}
+			});
+			valueControl.focusedProperty().addListener(new ChangeListener<Boolean>() {
+				@Override
+				public void changed(
+						ObservableValue<? extends Boolean> observable,
+						Boolean oldValue, Boolean newValue) {
+					if (!newValue && ((TextField) valueControl).getText().isEmpty()) {
+						((TextField) valueControl).setText(String.valueOf(parameter.get()));
+					}
+				}
+			});
 		}
 		
-		getChildren().addAll(name, value);
+		
+		getChildren().addAll(name, valueControl);
 	}
 
 	@Override
 	public void refreshValue() {
-		((TextField) value).setText(String.valueOf(((DoubleParameter) parameter).get()));
+		((TextField) valueControl).setText(String.valueOf(((DoubleParameter) parameter).get()));
 	}
-
+	
 	@Override
-	public boolean applyChange() {
-		if (Double.valueOf(((TextField) value).getText()) != ((DoubleParameter) parameter).get() && (!parameter.isMonitor())) {
-			// apply value
-			((DoubleParameter) parameter).set(Double.valueOf(((TextField) value).getText()));
-			if (parameter.isCritical()) {
-				return true;
-			}
-		}
-		return false;
-	}	
+	public boolean requiresReset() {
+		return parameter.isCritical() && ((DoubleParameter) parameter).get() != originalValue;
+	}
+	
+	@Override
+	public void applyValue() {
+		originalValue = ((DoubleParameter) parameter).get();
+	}
+
 }
diff --git a/src/jcgp/gui/settings/parameters/GUIIntegerParameter.java b/src/jcgp/gui/settings/parameters/GUIIntegerParameter.java
index 70b78a6..bf1a61e 100644
--- a/src/jcgp/gui/settings/parameters/GUIIntegerParameter.java
+++ b/src/jcgp/gui/settings/parameters/GUIIntegerParameter.java
@@ -1,49 +1,103 @@
 package jcgp.gui.settings.parameters;
 
+import javafx.beans.value.ChangeListener;
+import javafx.beans.value.ObservableValue;
+import javafx.event.EventHandler;
 import javafx.geometry.Pos;
 import javafx.scene.control.TextField;
+import javafx.scene.input.KeyEvent;
 import javafx.scene.layout.Priority;
 import javafx.scene.text.Text;
 import jcgp.backend.parameters.IntegerParameter;
+import jcgp.backend.parameters.ParameterStatus;
 import jcgp.gui.GUI;
 
 public class GUIIntegerParameter extends GUIParameter {
 
-	GUIIntegerParameter(IntegerParameter parameter) {	
+	private int originalValue;
+	
+	GUIIntegerParameter(final IntegerParameter parameter) {	
 		super();
 		
 		this.parameter = parameter;
 		
+		originalValue = parameter.get();
+		
 		name = new Text(parameter.getName());
-		value = new TextField(String.valueOf(parameter.get()));
+		valueControl = new TextField(String.valueOf(parameter.get()));
+		valueControl.setStyle(GUI.VALID_PARAMETER_STYLE);
 		
-		((TextField) value).setAlignment(Pos.CENTER_RIGHT);
+		((TextField) valueControl).setAlignment(Pos.CENTER_RIGHT);
 		
-		setHgrow(value, Priority.ALWAYS);
+		setHgrow(valueControl, Priority.ALWAYS);
 		
 		name.setWrappingWidth(GUI.WRAP_WIDTH);
 		
-		((TextField) value).setEditable(!parameter.isMonitor());
-
+		((TextField) valueControl).setEditable(!parameter.isMonitor());
+		
+		// bind if monitor, else set listeners
 		if (parameter.isMonitor()) {
 			makeLightBinding();
+		} else {
+			valueControl.addEventFilter(KeyEvent.KEY_TYPED, new EventHandler<KeyEvent>() {
+				public void handle( KeyEvent t ) {
+					char ch = t.getCharacter().toCharArray()[t.getCharacter().toCharArray().length - 1];
+					if (!(ch >= '0' && ch <= '9')) {
+						t.consume();
+					}
+				}
+			});
+			((TextField) valueControl).textProperty().addListener(new ChangeListener<String>() {
+				@Override
+				public void changed(
+						ObservableValue<? extends String> observable,
+						String oldValue, String newValue) {
+					if (!newValue.isEmpty()) {
+						parameter.set(Integer.parseInt(newValue));
+						if (parameter.getStatus() == ParameterStatus.INVALID) {
+							valueControl.setStyle(GUI.INVALID_PARAMETER_STYLE);
+							valueControl.setTooltip(tooltip);
+							tooltip.setText(parameter.getStatus().getDetails());
+						} else if (parameter.getStatus() == ParameterStatus.WARNING) {
+							valueControl.setStyle(GUI.WARNING_PARAMETER_STYLE);
+							valueControl.setTooltip(tooltip);
+							tooltip.setText(parameter.getStatus().getDetails());
+						} else {
+							valueControl.setStyle(GUI.VALID_PARAMETER_STYLE);
+							valueControl.setTooltip(null);
+						}
+					}
+
+				}
+			});
+			valueControl.focusedProperty().addListener(new ChangeListener<Boolean>() {
+				@Override
+				public void changed(
+						ObservableValue<? extends Boolean> observable,
+						Boolean oldValue, Boolean newValue) {
+					if (!newValue && ((TextField) valueControl).getText().isEmpty()) {
+						((TextField) valueControl).setText(String.valueOf(parameter.get()));
+					}
+				}
+			});
 		}
 				
-		getChildren().addAll(name, value);
+		getChildren().addAll(name, valueControl);
 	}
 
 	@Override
 	public void refreshValue() {
-		((TextField) value).setText(String.valueOf(((IntegerParameter) parameter).get()));
+		((TextField) valueControl).setText(String.valueOf(((IntegerParameter) parameter).get()));
 	}
 
 	@Override
-	public boolean applyChange() {
-		if (Integer.valueOf(((TextField) value).getText()) != ((IntegerParameter) parameter).get() && (!parameter.isMonitor())) {
-			// apply value
-			((IntegerParameter) parameter).set(Integer.valueOf(((TextField) value).getText()));
-			return parameter.isCritical();
-		}
-		return false;
+	public boolean requiresReset() {
+		return parameter.isCritical() && ((IntegerParameter) parameter).get() != originalValue;
+	}
+	
+	@Override
+	public void applyValue() {
+		originalValue = ((IntegerParameter) parameter).get();
 	}
+
 }
diff --git a/src/jcgp/gui/settings/parameters/GUIParameter.java b/src/jcgp/gui/settings/parameters/GUIParameter.java
index a783d71..9d6f07a 100644
--- a/src/jcgp/gui/settings/parameters/GUIParameter.java
+++ b/src/jcgp/gui/settings/parameters/GUIParameter.java
@@ -7,6 +7,7 @@ import javafx.beans.value.ChangeListener;
 import javafx.beans.value.ObservableValue;
 import javafx.geometry.Pos;
 import javafx.scene.control.Control;
+import javafx.scene.control.Tooltip;
 import javafx.scene.layout.HBox;
 import javafx.scene.text.Text;
 import jcgp.backend.parameters.BooleanParameter;
@@ -18,13 +19,19 @@ public abstract class GUIParameter extends HBox {
 		
 	protected Parameter parameter;
 	protected Text name;
-	protected Control value;
+	protected Control valueControl;
+	
+	protected Tooltip tooltip;
 	
 	protected AtomicBoolean updateCheck = new AtomicBoolean(true);
 	
 	protected GUIParameter() {
 		setAlignment(Pos.CENTER_LEFT);
 		setSpacing(5);
+		
+		tooltip = new Tooltip();
+		tooltip.setStyle("-fx-background-color: white; -fx-border-color: black; .page-corner {-fx-background-color: transparent;}");
+		tooltip.setSkin(null);
 	}
 	
 	protected final void makeLightBinding() {
@@ -48,6 +55,10 @@ public abstract class GUIParameter extends HBox {
 	
 	public abstract void refreshValue();
 	
+	public abstract boolean requiresReset();
+	
+	public abstract void applyValue();
+	
 	public static GUIParameter create(Parameter parameter) {
 		if (parameter instanceof IntegerParameter) {
 			return new GUIIntegerParameter((IntegerParameter) parameter);
@@ -59,12 +70,4 @@ public abstract class GUIParameter extends HBox {
 			throw new ClassCastException("No GUIParameter subclass exists for argument of type " + parameter.getClass());
 		}
 	}
-	
-	/**
-	 * Writes the GUI parameter value back to the resources parameter,
-	 * if any changes were made.
-	 * 
-	 * @return true if the experiment needs to be reset, false otherwise.
-	 */
-	public abstract boolean applyChange();
 }