Minor renaming.

Author: RuedigerLunde

aima-gui/src/main/java/aima/gui/fx/views/MapEnvironmentViewCtrl.java

@@ -31,8 +31,8 @@ public class MapEnvironmentViewCtrl extends SimpleEnvironmentViewCtrl {
 	protected String goal;
 	protected List<String> track;
 
-	public MapEnvironmentViewCtrl(StackPane parent) {
-		super(parent);
+	public MapEnvironmentViewCtrl(StackPane viewRoot) {
+		super(viewRoot);
 		envStateView = new Pane();
 		splitPane.getItems().add(0, envStateView);
 		splitPane.setDividerPosition(0, 0.7);

aima-gui/src/main/java/aima/gui/fx/views/NQueensViewCtrl.java

@@ -28,11 +28,11 @@ public class NQueensViewCtrl {
 	 * Adds a grid pane to the provided pane and creates a controller class
 	 * instance which is responsible for queen symbol positioning on the grid.
 	 */
-	public NQueensViewCtrl(StackPane pane) {
-		pane.getChildren().add(gridPane);
-		pane.setAlignment(Pos.BOTTOM_CENTER);
-		gridPane.maxWidthProperty().bind(Bindings.min(pane.widthProperty(), pane.heightProperty()).subtract(20));
-		gridPane.maxHeightProperty().bind(Bindings.min(pane.widthProperty(), pane.heightProperty()).subtract(10));
+	public NQueensViewCtrl(StackPane viewRoot) {
+		viewRoot.getChildren().add(gridPane);
+		viewRoot.setAlignment(Pos.BOTTOM_CENTER);
+		gridPane.maxWidthProperty().bind(Bindings.min(viewRoot.widthProperty(), viewRoot.heightProperty()).subtract(20));
+		gridPane.maxHeightProperty().bind(Bindings.min(viewRoot.widthProperty(), viewRoot.heightProperty()).subtract(10));
 	}
 
 	/** Updates the view. */

aima-gui/src/main/java/aima/gui/fx/views/SimpleEnvironmentViewCtrl.java

@@ -28,12 +28,12 @@ public class SimpleEnvironmentViewCtrl implements EnvironmentView {
 	 * an environment view which prints messages about environment changes on
 	 * the text area.
 	 */
-	public SimpleEnvironmentViewCtrl(StackPane parent) {
+	public SimpleEnvironmentViewCtrl(StackPane viewRoot) {
 		splitPane = new SplitPane();
 		textArea = new TextArea();
 		textArea.setMinWidth(0.0);
 		splitPane.getItems().add(textArea);
-		parent.getChildren().add(splitPane);
+		viewRoot.getChildren().add(splitPane);
 	}
 
 	public void initialize(Environment env) {

aima-gui/src/main/java/aima/gui/fx/views/VacuumEnvironmentViewCtrl.java

@@ -32,8 +32,8 @@ public class VacuumEnvironmentViewCtrl extends SimpleEnvironmentViewCtrl {
 	protected List<String> locations;
 	private Agent agentInAction;
 
-	public VacuumEnvironmentViewCtrl(StackPane parent) {
-		super(parent);
+	public VacuumEnvironmentViewCtrl(StackPane viewRoot) {
+		super(viewRoot);
 		envStateView = new GridPane();
 		envStateView.setHgap(20);
 		RowConstraints rowCons = new RowConstraints();