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path: root/src/jcgp/gui/GUIConsole.java
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package jcgp.gui;

import javafx.event.EventHandler;
import javafx.scene.Cursor;
import javafx.scene.control.TextArea;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.AnchorPane;
import jcgp.GUI;

public class GUIConsole extends AnchorPane {
	
	private boolean dragging;
	private TextArea textArea = new TextArea("Welcome to JCGP!\n");
	
	public GUIConsole() {
		super();
		textArea.setEditable(false);
		textArea.setWrapText(true);
		
		//setStyle("-fx-border-width: 5 0 0 0; -fx-border-color: #D1D1D1");
		
		setResizeListeners();
		
		AnchorPane.setTopAnchor(textArea, GUI.RESIZE_MARGIN);
		AnchorPane.setBottomAnchor(textArea, 0.0);
		AnchorPane.setRightAnchor(textArea, 0.0);
		AnchorPane.setLeftAnchor(textArea, 0.0);
		
		setMinHeight(GUI.CONSOLE_HEIGHT);
		setPrefHeight(GUI.CONSOLE_HEIGHT);
		
		getChildren().add(textArea);
		
	}

	/**
	 * 
	 */
	private void setResizeListeners() {
		setOnMousePressed(new EventHandler<MouseEvent>() {
			@Override
			public void handle(MouseEvent event) {
				// ignore clicks outside of the draggable margin
		        if(isInDraggableZone(event)) {
			        dragging = true;
		        }
			}
		});
		setOnMouseDragged(new EventHandler<MouseEvent>() {
			@Override
			public void handle(MouseEvent event) {
				if(dragging) {
					double newHeight = getHeight() - event.getY();
					if (newHeight >= getMinHeight()) {
						setPrefHeight(newHeight);
					} else {
						setPrefHeight(getMinHeight());
					}
				}
			}
		});
		setOnMouseMoved(new EventHandler<MouseEvent>() {
			@Override
			public void handle(MouseEvent event) {
				if(isInDraggableZone(event) || dragging) {
		            setCursor(Cursor.V_RESIZE);
		        }
		        else {
		            setCursor(Cursor.DEFAULT);
		        }
			}
		});
		setOnMouseReleased(new EventHandler<MouseEvent>() {
			@Override
			public void handle(MouseEvent event) {
				dragging = false;
		        setCursor(Cursor.DEFAULT);
			}
		});
		textArea.setOnMouseEntered(new EventHandler<MouseEvent>() {
			@Override
			public void handle(MouseEvent event) {
				setCursor(Cursor.DEFAULT);
			}
		});
	}
	
	private boolean isInDraggableZone(MouseEvent event) {
        return event.getY() < (GUI.RESIZE_MARGIN);
    }
	
	public TextArea getTextArea() {
		return textArea;
	}
	
}