praktikum-holons/src/ui/view/canvas/Canvas.java

package ui.view.canvas;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.geom.Line2D;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.SwingUtilities;

import com.google.gson.JsonParseException;

import classes.AbstractCanvasObject;
import classes.Edge;
import classes.GroupNode;
import classes.HolonObject;
import classes.HolonSwitch;
import classes.Node;
import ui.controller.Control;
import ui.model.Consumer;
import ui.model.DecoratedCable;
import ui.model.DecoratedGroupNode;
import ui.model.DecoratedHolonObject;
import ui.model.DecoratedHolonObject.HolonObjectState;
import ui.model.DecoratedSwitch;
import ui.model.ExitCable;
import ui.model.DecoratedSwitch.SwitchState;
import ui.view.inspector.UnitGraph;
import ui.model.Model;
import ui.model.Passiv;
import ui.model.Supplier;
import ui.model.VisualRepresentationalState;
import utility.ImageImport;
import utility.Vector2Int;

/**
 * This Class is the Canvas. All Objects will be visualized here
 *
 * @author Gruppe14
 */
public class Canvas extends AbstractCanvas implements MouseListener, MouseMotionListener {

	private static final long serialVersionUID = 1L;
	public boolean disabled = false;
	private boolean showSupplyBar = false;

	GroupNode groupNode = null;

	Color[] colors = new Color[6];

	/**
	 * Constructor.
	 *
	 * @param mod       the Model
	 * @param control   the Controller
	 * @param unitGraph
	 */
	public Canvas(Model mod, Control control, UnitGraph unitGraph) {
		toolTip = false;
		this.controller = control;
		this.model = mod;
		colors[0] = getStateColor(HolonObjectState.PRODUCER);
		colors[1] = getStateColor(HolonObjectState.NOT_SUPPLIED);
		colors[2] = getStateColor(HolonObjectState.PARTIALLY_SUPPLIED);
		colors[3] = getStateColor(HolonObjectState.SUPPLIED);
		colors[4] = getStateColor(HolonObjectState.OVER_SUPPLIED);
		colors[5] = getStateColor(HolonObjectState.NO_ENERGY);

		scalediv20 = model.getScale() / 20;

		showConnectionInformation = true;
		control.setMaxCapacity(10000);
		popmenu.add(itemCut);
		popmenu.add(itemCopy);
		popmenu.add(itemPaste);
		popmenu.add(itemDelete);
		popmenu.add(itemAlign);
		popmenu.addSeparator();
		popmenu.add(itemGroup);
		popmenu.add(itemUngroup);
		popmenu.add(itemCreateTemplate);

		itemDelete.setEnabled(false);
		itemCut.setEnabled(false);
		itemCopy.setEnabled(false);
		itemPaste.setEnabled(true);
		itemAlign.setEnabled(false);
		itemGroup.setEnabled(false);
		itemUngroup.setEnabled(false);

		itemCut.setText("Cut");

		itemGroup.addActionListener(actionEvent -> {
			// calculate uppernode pos (taken from the controller)
			unPos = new Vector2Int(0, 0);
			animCps = new ArrayList<>();
			for (AbstractCanvasObject cps : model.getSelectedObjects()) {
				animCps.add(cps); // add to animation Cps ArrayList
				unPos = unPos.add(cps.getPosition());
			}
			unPos = unPos.divide(animCps.size());

			// save old Position
			savePos = new ArrayList<>();
			for (int i = 0; i < animCps.size(); i++) {
				savePos.add(animCps.get(i).getPosition().clone());
			}

			animT = new javax.swing.Timer(animDelay, actionEvent1 -> {
				if (animDuration - animDelay > 0 && animCps.size() > 1) {
					for (AbstractCanvasObject animCpObject : animCps) {
						Vector2Int pos = animCpObject.getPosition();
						Vector2Int difference = pos.subtract(unPos);
						Vector2Int result = pos.subtract(difference.divide(animSteps));
						pos.set(result);
					}
					repaint();
					animDuration -= animDelay;
					animSteps--;
				} else {
					animDuration = ANIMTIME;
					animSteps = animDuration / animDelay;
					animT.stop();
					for (int i = 0; i < animCps.size(); i++) {
						animCps.get(i).getPosition().set(savePos.get(i));
					}
					controller.addUpperNode("GroupNode", groupNode, animCps);
					controller.calculateStateAndVisualForCurrentTimeStep();
					controller.clearSelection();
					repaint();
				}
			});
			animT.start();
		});

		itemUngroup.addActionListener(actionEvent -> {
			// save old Position
			int upperNodeId = tempCps.getId();

			closeUpperNodeTab(upperNodeId);

			savePos = new ArrayList<>();
			animCps = ((GroupNode) tempCps).getNodes();
			controller.ungroupGroupNode((GroupNode) tempCps, groupNode);

			for (int i = 0; i < animCps.size(); i++) {
				savePos.add(animCps.get(i).getPosition().clone());
			}
			for (AbstractCanvasObject cps : animCps) {
				int x = tempCps.getPosition().getX();
				int y = tempCps.getPosition().getY();

				cps.setPosition(new Vector2Int(x, y));
			}

			animT = new javax.swing.Timer(animDelay, actionEvent1 -> {
				controller.clearSelection();
				if (animDuration - animDelay >= 0) {
					for (int i = 0; i < animCps.size(); i++) {
						Vector2Int pos = animCps.get(i).getPosition();
						Vector2Int difference = pos.subtract(savePos.get(i));
						Vector2Int result = pos.subtract(difference.divide(animSteps));
						pos.set(result);
					}
					repaint();
					animDuration -= animDelay;
					animSteps--;
				} else {
					animDuration = ANIMTIME;
					animSteps = animDuration / animDelay;
					animT.stop();
					for (int i = 0; i < animCps.size(); i++) {
						animCps.get(i).getPosition().set(savePos.get(i));
					}
					controller.calculateStateAndVisualForCurrentTimeStep();
					repaint();
				}
			});
			animT.start();
		});

		// adds the selected object(s) to the statistic panel

		itemDelete.addActionListener(actionEvent -> {
			// Remove the selected Object objects
			// Edge Deleting
			if (tempCps == null && edgeHighlight != null) {
				controller.removeEdgesOnCanvas(edgeHighlight);
				// Look for a CPSNode with no Connections and delete them
				if (edgeHighlight.getA() instanceof Node
						&& edgeHighlight.getA().getConnections().size() == 0) {
					controller.delCanvasObject(edgeHighlight.getA(), false);
				}
				if (edgeHighlight.getB() instanceof Node
						&& edgeHighlight.getB().getConnections().size() == 0) { // Look on the other end of the cable
					controller.delCanvasObject(edgeHighlight.getB(), false);
				}
				edgeHighlight = null;
			}
			for (AbstractCanvasObject cps : model.getSelectedObjects()) {
				controller.delCanvasObject(cps, false);
				toolTip = false;
			}
			controller.tryAutoSave();
			controller.clearSelection();
			tempCps = null;
			repaint();
		});

		itemCut.addActionListener(actionEvent -> {
			controller.cut(null);
			itemPaste.setEnabled(true);
			repaint();
		});

		itemCopy.addActionListener(actionEvent -> {
			if (tempCps instanceof GroupNode)
				controller.getObjectsInDepth();
			controller.copy(null);
			itemPaste.setEnabled(true);
			repaint();
		});

		itemAlign.addActionListener(actionEvent -> {
			for (AbstractCanvasObject cps : model.getSelectedObjects())
				align(cps, model.getScaleDiv2());
			repaint();
		});
		itemPaste.addActionListener(actionEvent -> {
			try {
				controller.paste(null, mousePosition);

			} catch (JsonParseException | UnsupportedFlavorException | IOException e1) {
				JLabel message = new JLabel("The Clipboard information cannot be pastet into Application.");
				JOptionPane.showMessageDialog(null, message, "", JOptionPane.ERROR_MESSAGE);
			}
			repaint();
		});

		/*
		 * create Template
		 */
		itemCreateTemplate.addActionListener(actionEvent -> {
			controller.createTemplate((HolonObject) tempCps, (JFrame) SwingUtilities.getRoot(this));
		});

		this.addMouseListener(this);
		this.addMouseMotionListener(this);
	}

	/**
	 * Paints all Components on the Canvas.
	 *
	 * @param g Graphics
	 */

	protected Color getStateColor(HolonObjectState state) {
		switch (state) {
		case NOT_SUPPLIED:
			return new Color(230, 120, 100);
		case NO_ENERGY:
			return Color.white;
		case OVER_SUPPLIED:
			return new Color(166, 78, 229);
		case PARTIALLY_SUPPLIED:
			return Color.yellow;
		case PRODUCER:
			return Color.lightGray;
		case SUPPLIED:
			return new Color(13, 175, 28);
		default:
			return Color.BLACK;
		}
	}

	protected void paintCanvasObject(Graphics2D g, DecoratedHolonObject decoratedHolonObject) {
		Vector2Int pos = decoratedHolonObject.getModel().getPosition();
		Color statecolor = getStateColor(decoratedHolonObject.getState());
		g.setColor(statecolor);
		g.fillRect(pos.getX() - controller.getScaleDiv2(), pos.getY() - controller.getScaleDiv2(),
				controller.getScale(), controller.getScale());
		drawCanvasObject(g, decoratedHolonObject.getModel().getImage(), pos);
	}

	protected void drawCanvasObjectString(Graphics2D g, Vector2Int posOfCanvasObject, float energy) {
		g.setColor(Color.BLACK);
		g.setFont(new Font("TimesNewRoman", Font.PLAIN, (int) (controller.getScale() / 4f)));
		g.drawString((energy > 0) ? "+" + Float.toString(energy) : Float.toString(energy),
				posOfCanvasObject.getX() - controller.getScaleDiv2(),
				posOfCanvasObject.getY() - controller.getScaleDiv2() - 1);
	}

	protected void paintConsumer(Graphics2D g, Consumer con) {
		paintCanvasObject(g, con);
		drawCanvasObjectString(g, con.getModel().getPosition(), -con.getEnergyNeededFromNetwork());
		if (showSupplyBar) {
			paintSupplyBar(g, con.getSupplyBarPercentage(), getStateColor(con.getState()),
					con.getModel().getPosition());
		}
	}

	protected void paintSupplier(Graphics2D g, Supplier sup) {
		paintCanvasObject(g, sup);
		drawCanvasObjectString(g, sup.getModel().getPosition(), sup.getEnergyToSupplyNetwork());
	}

	protected void drawCanvasObject(Graphics2D g, String Image, Vector2Int pos) {
		g.drawImage(ImageImport.loadImage(Image, controller.getScale(), controller.getScale()),
				pos.getX() - controller.getScaleDiv2(), pos.getY() - controller.getScaleDiv2(), controller.getScale(),
				controller.getScale(), null);
	}

	protected void paintCable(Graphics2D g, DecoratedCable cable, boolean isSelected) {
		Vector2Int start = cable.getModel().getA().getPosition();
		Vector2Int end = cable.getModel().getB().getPosition();
		float currentEnergy = cable.getFlowEnergy();
		float capacity = cable.getModel().getCapacity();
		boolean unlimited = cable.getModel().isUnlimitedCapacity();
		switch (cable.getState()) {
		case Burned:
			g.setColor(Color.RED);
			g.setStroke(new BasicStroke(2));
			break;
		case Working:
			g.setColor(new Color(13, 175, 28));
			g.setStroke(new BasicStroke(unlimited ? 2f : (currentEnergy / capacity * 2f) + 1));
			break;
		}
		if (isSelected) {
			g.setColor(Color.lightGray);
		}
		g.drawLine(start.getX(), start.getY(), end.getX(), end.getY());
		if (showConnectionInformation) {
			Vector2Int middle = new Vector2Int((start.getX() + end.getX()) / 2, (start.getY() + end.getY()) / 2);
			g.setFont(new Font("TimesRoman", Font.PLAIN, Math.max((int) (controller.getScale() / 3.5f), 10)));
			g.drawString(currentEnergy + "/" + (unlimited ? "\u221E" : capacity), middle.getX(), middle.getY());
		}
	}

	protected void paintSwitch(Graphics2D g, DecoratedSwitch dSwitch) {
		drawCanvasObject(g, dSwitch.getState() == SwitchState.Open ? HolonSwitch.getSwitchOpenImage()
				: HolonSwitch.getSwitchClosedImage(), dSwitch.getModel().getPosition());
	}

	protected void paintExitCable(Graphics2D g, ExitCable eCable) {
		Vector2Int start = eCable.getStart().getPosition();
		Vector2Int end = eCable.getFinish().getPosition();
		float currentEnergy = eCable.getCable().getFlowEnergy();
		float capacity = eCable.getCable().getModel().getCapacity();
		boolean unlimited = eCable.getCable().getModel().isUnlimitedCapacity();
		switch (eCable.getCable().getState()) {
		case Burned:
			g.setColor(Color.RED);
			g.setStroke(new BasicStroke(2));
			break;
		case Working:
			g.setColor(new Color(13, 175, 28));
			g.setStroke(new BasicStroke(unlimited ? 2f : (currentEnergy / capacity * 2f) + 1));
			break;
		}
		g.drawLine(start.getX(), start.getY(), end.getX(), end.getY());
		Vector2Int middle = new Vector2Int((start.getX() + end.getX()) / 2, (start.getY() + end.getY()) / 2);
		g.setFont(new Font("TimesRoman", Font.PLAIN, Math.max((int) (controller.getScale() / 3.5f), 10)));
		g.drawString(currentEnergy + "/" + (unlimited ? "\u221E" : capacity), middle.getX(), middle.getY());
	}

	protected void paintGroupNode(Graphics2D g, DecoratedGroupNode dGroupNode) {
		Vector2Int pos = dGroupNode.getModel().getPosition();
		g.setColor(Color.lightGray);
		g.fillRect(pos.getX() - controller.getScaleDiv2(), pos.getY() - controller.getScaleDiv2(),
				controller.getScale(), controller.getScale());
		drawCanvasObject(g, "/Images/upper_node.png", pos);
		paintGroupNodeBar(g, dGroupNode, pos);
	}

	private void paintGroupNodeBar(Graphics2D g, DecoratedGroupNode dGroupNode, Vector2Int pos) {
		// +1, -2, -1 little Adjustment for pixel perfect alignment
		int barWidth = (int) (controller.getScale());
		int barHeight = (int) (controller.getScale() / 5);
		g.setColor(Color.WHITE);
		g.fillRect(pos.getX() - controller.getScaleDiv2(), pos.getY() + controller.getScaleDiv2() - 1, (int) barWidth,
				barHeight);
		float[] percentages = getGroupNodeBarPercentages(dGroupNode);

		for (int i = 5; i >= 0; i--) {
			g.setColor(colors[i]);
			g.fillRect(pos.getX() - controller.getScaleDiv2(), pos.getY() + controller.getScaleDiv2() - 1,
					(int) (barWidth * percentages[i] - 1), barHeight);
		}
//		g.setColor(color);
//		g.fillRect(pos.getX() - controller.getScaleDiv2(), pos.getY() + controller.getScaleDiv2() - 1, (int) (barWidth * (percentage < 1 ? percentage : 1.0f) - 1), barHeight);
		g.setColor(Color.BLACK);
		g.setStroke(new BasicStroke(1));
		g.drawRect(pos.getX() - controller.getScaleDiv2(), pos.getY() + controller.getScaleDiv2() - 1, barWidth - 1,
				barHeight);
	}

	/**
	 * HardCoded Stuff dont try at Home ;)
	 * 
	 * @param dGroupNode
	 * @return
	 */
	public float[] getGroupNodeBarPercentages(DecoratedGroupNode dGroupNode) {
		int[] amountOfObjects = new int[6];
		amountOfObjects[0] = dGroupNode.getAmountOfSupplier();
		amountOfObjects[1] = dGroupNode.getAmountOfConsumerWithState(HolonObjectState.NOT_SUPPLIED);
		amountOfObjects[2] = dGroupNode.getAmountOfConsumerWithState(HolonObjectState.PARTIALLY_SUPPLIED);
		amountOfObjects[3] = dGroupNode.getAmountOfConsumerWithState(HolonObjectState.SUPPLIED);
		amountOfObjects[4] = dGroupNode.getAmountOfConsumerWithState(HolonObjectState.OVER_SUPPLIED);
		amountOfObjects[5] = dGroupNode.getAmountOfPassiv();
		int countHolonObjects = amountOfObjects[0] + amountOfObjects[1] + amountOfObjects[2] + amountOfObjects[3]
				+ amountOfObjects[4] + amountOfObjects[5];
		float[] percentages = new float[6];
		int count = 0;
		for (int i = 0; i < 6; i++) {
			count += amountOfObjects[i];
			percentages[i] = (float) count / (float) countHolonObjects;
		}
		return percentages;
	}

	private void paintSupplyBar(Graphics2D g, float percentage, Color color, Vector2Int pos) {
		// +1, -2, -1 little Adjustment for pixel perfect alignment
		int barWidth = (int) (controller.getScale());
		int barHeight = (int) (controller.getScale() / 5);
		g.setColor(Color.WHITE);
		g.fillRect(pos.getX() - controller.getScaleDiv2(), pos.getY() + controller.getScaleDiv2() - 1, (int) barWidth,
				barHeight);
		g.setColor(color);
		g.fillRect(pos.getX() - controller.getScaleDiv2(), pos.getY() + controller.getScaleDiv2() - 1,
				(int) (barWidth * (percentage < 1 ? percentage : 1.0f) - 1), barHeight);
		g.setColor(Color.BLACK);
		g.setStroke(new BasicStroke(1));
		g.drawRect(pos.getX() - controller.getScaleDiv2(), pos.getY() + controller.getScaleDiv2() - 1, barWidth - 1,
				barHeight);
		g.setFont(new Font("TimesNewRoman", Font.PLAIN, (int) (barHeight * 1.5) - 2));
		String percentageString = (Math.round((percentage * 100))) + "%";
		int stringWidth = (int) g.getFontMetrics().getStringBounds(percentageString, g).getWidth();
		if (percentage > 1.0f)
			g.setColor(Color.WHITE); // Just to see better on purple
		g.drawString(percentageString, pos.getX() + 1 - stringWidth / 2,
				pos.getY() + controller.getScaleDiv2() - 1 + barHeight);

	}

	// old code
	void drawMarker(Graphics2D g) {
		Color transparentGrey = new Color(128, 174, 247, 40);
		if (sx > x && sy > y) {
			g.drawRect(x, y, sx - x, sy - y);
			g.setColor(transparentGrey);
			g.fillRect(x, y, sx - x, sy - y);
		} else if (sx < x && sy < y) {
			g.drawRect(sx, sy, x - sx, y - sy);
			g.setColor(transparentGrey);
			g.fillRect(sx, sy, x - sx, y - sy);
		} else if (sx >= x) {
			g.drawRect(x, sy, sx - x, y - sy);
			g.setColor(transparentGrey);
			g.fillRect(x, sy, sx - x, y - sy);
		} else if (sy >= y) {
			g.drawRect(sx, y, x - sx, sy - y);
			g.setColor(transparentGrey);
			g.fillRect(sx, y, x - sx, sy - y);
		}
	}

	public void paintComponent(Graphics g) {
		super.paintComponent(g);
		Graphics2D g2d = (Graphics2D) g;
		g2d.setRenderingHints(new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON));
		// -->Old code
		if (drawEdge) {
			g2d.setColor(Color.BLACK);
			g2d.setStroke(new BasicStroke(1));
			g2d.drawLine(tempCps.getPosition().getX(), tempCps.getPosition().getY(), x, y);
		}
		// <--
		// SelectedCable
		HashSet<Edge> selectedEdges = new HashSet<Edge>();
		for (AbstractCanvasObject aCps : model.getSelectedObjects()) {
			for (Edge edge : aCps.getConnections()) {
				selectedEdges.add(edge);
			}
		}
		if (model.getSelectedEdge() != null)
			selectedEdges.add(model.getSelectedEdge());
		// timstep:
		g.setFont(new Font("TimesNewRoman", Font.PLAIN, Math.max((int) (controller.getScale() / 3.5f), 10)));
		g2d.setColor(Color.BLACK);

		VisualRepresentationalState visualState = controller.getSimManager().getActualVisualRepresentationalState();
		// VisualState Representation:
		if (visualState == null) {
			System.out.println("AHHH");
			return;
		}
		for (ExitCable cable : visualState.getExitCableList()) {
			paintExitCable(g2d, cable);
		}
		for (DecoratedCable cable : visualState.getCableList()) {
			paintCable(g2d, cable, selectedEdges.contains(cable.getModel()));
		}
		for (DecoratedGroupNode dGroupNode : visualState.getGroupNodeList()) {
			paintGroupNode(g2d, dGroupNode);
		}
		for (Consumer con : visualState.getConsumerList()) {
			paintConsumer(g2d, con);
		}
		for (Supplier sup : visualState.getSupplierList()) {
			paintSupplier(g2d, sup);
		}
		for (Passiv pas : visualState.getPassivList()) {
			paintCanvasObject(g2d, pas);
		}
		for (DecoratedSwitch dSwitch : visualState.getSwitchList()) {
			paintSwitch(g2d, dSwitch);
		}
		for (Node node : visualState.getNodeList()) {
			drawCanvasObject(g2d, "/Images/node.png", node.getPosition());
		}

		// -->oldCode
		if (doMark) {
			g2d.setColor(Color.BLACK);
			g2d.setStroke(new BasicStroke(0));
			drawMarker(g2d);
		}
		// Test Selection
		// Objects:
		g2d.setColor(Color.BLUE);
		g2d.setStroke(new BasicStroke(1));
		Color transparentGrey = new Color(128, 174, 247, 40);
		for (AbstractCanvasObject aCps : model.getSelectedObjects()) {
			if (aCps instanceof Node) {
				Vector2Int pos = aCps.getPosition();
				g2d.setColor(transparentGrey);
				g2d.fillOval(pos.getX() - (int) (controller.getScaleDiv2()),
						pos.getY() - (int) (controller.getScaleDiv2()), controller.getScale(), controller.getScale());
				g2d.setColor(Color.LIGHT_GRAY);
				g2d.setStroke(new BasicStroke(2));
				g2d.drawOval(pos.getX() - (int) (controller.getScaleDiv2()),
						pos.getY() - (int) (controller.getScaleDiv2()), controller.getScale(), controller.getScale());
			} else {
				Vector2Int pos = aCps.getPosition();
				g2d.setColor(transparentGrey);
				g2d.fillRect(pos.getX() - (int) (controller.getScaleDiv2() * 1.5f),
						pos.getY() - (int) (controller.getScaleDiv2() * 1.5f), (int) (controller.getScale() * 1.5f),
						(int) (controller.getScale() * 1.5f));
				g2d.setColor(Color.LIGHT_GRAY);
				g2d.setStroke(new BasicStroke(2));
				g2d.drawRect(pos.getX() - (int) (controller.getScaleDiv2() * 1.5f),
						pos.getY() - (int) (controller.getScaleDiv2() * 1.5f), (int) (controller.getScale() * 1.5f),
						(int) (controller.getScale() * 1.5f));
			}

		}
		// maybeReplace:
		if (mayBeReplaced != null) {
			g2d.setColor(Color.RED);
			Vector2Int pos = mayBeReplaced.getPosition();
			g2d.drawImage(ImageImport.loadImage("/Images/replace.png"), pos.getX() + controller.getScaleDiv2(),
					pos.getY() - controller.getScale(), controller.getScaleDiv2(), controller.getScaleDiv2(), null);
		}
		// <-- OldCode
	}

	@Override
	public void mouseClicked(MouseEvent e) {
	}

	@Override
	public void mouseEntered(MouseEvent e) {
	}

	@Override
	public void mouseExited(MouseEvent e) {
	}

	@Override
	public void mousePressed(MouseEvent e) {
		this.grabFocus();
		if (!disabled) {
			tempCps = null;
			edgeHighlight = null;
			controller.setSelecteEdge(null);
			// Object Selection
			for (AbstractCanvasObject cps : model.getObjectsOnCanvas()) {
				cx = cps.getPosition().getX() - controller.getScaleDiv2();
				cy = cps.getPosition().getY() - controller.getScaleDiv2();
				if (x - controller.getScale() <= cx && y - controller.getScale() <= cy && x >= cx && y >= cy) {
					tempCps = cps;

					dragging = true;

					if (e.isControlDown() && tempCps != null) {
						System.out.println("Add Remove Selection CANVAS");
						if (model.getSelectedObjects().contains(tempCps)) {
							controller.removeObjectFromSelection(tempCps);
						} else {
							controller.addSelectedObject(tempCps);
						}

					}

					// If drawing an Edge (CTRL down)
					if (tempCps.getClass() == HolonObject.class) {
						HolonObject tempObj = ((HolonObject) tempCps);
						dataSelected = tempObj.getElements();
					}
					if (e.isShiftDown()) {
						drawEdge = true;
						dragging = false;
					}
				}
			}

			// Edge Selection
			if (tempCps == null) {
				edgeHighlight = mousePositionOnEdge(x, y);
				controller.setSelecteEdge(edgeHighlight);
				if (!e.isControlDown() && e.getButton() != MouseEvent.BUTTON3) {
					controller.clearSelection();
				}
			}

			if (edgeHighlight == null && tempCps == null) {
				sx = e.getX();
				sy = e.getY();
				doMark = true;
			}

			repaint();
		}
	}

	@Override
	public void mouseReleased(MouseEvent e) {
		if (!disabled) {
			x = e.getX();
			y = e.getY();

			dragging = false;

			if (drawEdge) {
				drawEdge = false;
				drawDeleteEdge();
			}

			if (dragged) {
				try {
					/**
					 * Save before further Dragged interactions happen
					 */
					controller.autoSave();

				} catch (IOException ex) {
					System.err.println("AutoSave error by dragging");
					ex.printStackTrace();
				}

				/**
				 * check if a unique tempCps could replace an Object on the canvas
				 */
				if (model.getSelectedObjects().size() == 1 && checkForReplacement(model.getObjectsOnCanvas(),
						tempCps, tempCps.getPosition().getX(), tempCps.getPosition().getY())) {
					/**
					 * if UpperNode would be replaced, close its tabs
					 */
					if (mayBeReplaced instanceof GroupNode)
						closeUpperNodeTab(mayBeReplaced.getId());
					/**
					 * replace on canvas (will save)
					 */
					controller.replaceCanvasObject(mayBeReplaced, tempCps);
					mayBeReplaced = null;
				}
			}

			if (!e.isControlDown() && !dragged && tempCps != null && MouseEvent.BUTTON3 != e.getButton()) {
				controller.clearSelection();
				controller.addSelectedObject(tempCps);
				if (tempCps instanceof GroupNode)
					controller.getObjectsInDepth();
			}

			dragged = false;

			// Rightclick List
			setRightClickMenu(e);

			markObjects();

			boolean doubleclick = doubleClick();
			if (doubleclick && tempCps instanceof HolonSwitch && MouseEvent.BUTTON3 != e.getButton()
					&& tempCps != null) {
				((HolonSwitch) tempCps).switchState();
			}
			if (doubleclick && tempCps != null && tempCps instanceof GroupNode) {
				controller.getGui().openNewUpperNodeTab((GroupNode) tempCps);
			}
			controller.calculateStateAndVisualForTimeStep(model.getCurrentIteration());

			repaint();
		}
	}

	@Override
	public void mouseDragged(MouseEvent e) {
		if (!disabled) {
			// If Edge is drawn
			x = e.getX();
			y = e.getY();

			if (!model.getSelectedObjects().contains(tempCps) && !doMark) {
				controller.clearSelection();
				if (tempCps != null) {
					controller.addSelectedObject(tempCps);
				}
			}
			if (dragging) {
				try {
					dragged = true;
					float xDist, yDist; // Distance

					x = e.getX();
					y = e.getY();

					// Make sure its in bounds
					int scaleDiv2 = controller.getScaleDiv2();
					if (e.getX() < scaleDiv2)
						x = scaleDiv2;
					else if (e.getX() > this.getWidth() - scaleDiv2)
						x = this.getWidth() - scaleDiv2;
					if (e.getY() < scaleDiv2)
						y = scaleDiv2;
					else if (e.getY() > this.getHeight() - scaleDiv2)
						y = this.getHeight() - scaleDiv2;

					// Distance
					xDist = x - tempCps.getPosition().getX();
					yDist = y - tempCps.getPosition().getY();

					tempCps.setPosition(x, y); // Drag Position
					// ToolTipText Position and name
					toolTip = true;
					toolTipText = tempCps.getName() + ", " + tempCps.getId();
					toolTipPos.setX(tempCps.getPosition().getX() - scaleDiv2);
					toolTipPos.setY(tempCps.getPosition().getY() + scaleDiv2);

					// All Selected Objects
					for (AbstractCanvasObject cps : model.getSelectedObjects()) {
						if (cps != tempCps) {
							x = (int) (cps.getPosition().getX() + xDist);
							y = (int) (cps.getPosition().getY() + yDist);

							// Make sure its in bounds
							if (x <= scaleDiv2)
								x = scaleDiv2;
							else if (x > this.getWidth() - scaleDiv2)
								x = this.getWidth() - scaleDiv2;
							if (y <= scaleDiv2)
								y = scaleDiv2;
							else if (y > this.getHeight() - scaleDiv2)
								y = this.getHeight() - scaleDiv2;

							cps.setPosition(x, y);
						}
					}

					/**
					 * check if something might be replaced
					 */
					if (model.getSelectedObjects().size() == 1)
						checkForReplacement(model.getObjectsOnCanvas(), tempCps, x, y);

					repaint();
				} catch (Exception eex) {
				}
			}

			// Mark Objects
			if (doMark) {
				tempSelected.clear();
				for (AbstractCanvasObject cps : model.getObjectsOnCanvas()) {
					int x1 = sx, x2 = x, y1 = sy, y2 = y;

					if (sx >= x) {
						x1 = x;
						x2 = sx;
					}
					if (sy >= y) {
						y1 = y;
						y2 = sy;
					}
					if (x1 <= cps.getPosition().getX() + model.getScaleDiv2()
							&& y1 <= cps.getPosition().getY() + model.getScaleDiv2() && x2 >= cps.getPosition().getX()
							&& y2 >= cps.getPosition().getY()) {
						tempSelected.add(cps);

					}
				}
			}

			repaint();
		}
	}

	@Override
	public void mouseMoved(MouseEvent e) {
		if (!disabled) {
			x = e.getX();
			y = e.getY();

			// Everything for the tooltip :)
			boolean on = false;
			for (AbstractCanvasObject cps : model.getObjectsOnCanvas()) {
				cx = cps.getPosition().getX() - controller.getScaleDiv2();
				cy = cps.getPosition().getY() - controller.getScaleDiv2();

				on = setToolTipInfoAndPosition(on, cps);
			}
			if (on || (!on && toolTip))
				repaint();
			toolTip = on;
		}
	}

	/**
	 * Draws or Deletes an Edge.
	 */
	void drawDeleteEdge() {
		if (getMousePosition() != null) {
			boolean node = true;
			boolean newEdge = true;
			boolean onEdge = true;
			boolean deleteNode = false;
			Edge e = null;

			for (AbstractCanvasObject cps : model.getObjectsOnCanvas()) {
				cx = cps.getPosition().getX() - controller.getScaleDiv2();
				cy = cps.getPosition().getY() - controller.getScaleDiv2();
				if (x - controller.getScale() <= cx && y - controller.getScale() <= cy && x >= cx && y >= cy
						&& cps != tempCps) {
					node = false;
					onEdge = false;
					for (Edge p : tempCps.getConnections()) {
						if ((p.getA() == tempCps && p.getB() == cps) || (p.getB() == tempCps && p.getA() == cps)) {
							newEdge = false;
							e = p;
						}
					}
					if (!newEdge) {
						controller.removeEdgesOnCanvas(e);
						// Node ohne Edge?
						if (e.getA().getClass() == Node.class && e.getA().getConnections().isEmpty()) {
							tempCps = e.getA();
							deleteNode = true;
						}
						if (e.getB().getClass() == Node.class && e.getB().getConnections().isEmpty()) {
							deleteNode = true;
						}
					} else {
						if (!(cps instanceof GroupNode || tempCps instanceof GroupNode)) {
							e = new Edge(cps, tempCps, model.getMaxCapacity());
							controller.addEdgeOnCanvas(e);
						} else if (cps instanceof GroupNode && !(tempCps instanceof GroupNode)) {
							GroupNode thisUpperNode = (GroupNode) cps;
							Object[] possibilities = thisUpperNode.getNodes().stream().map(aCps -> new ACpsHandle(aCps))
									.filter(aCpsHandle -> !(aCpsHandle.object instanceof GroupNode)).toArray();
							if (possibilities.length != 0) {
								ACpsHandle selected = (ACpsHandle) JOptionPane.showInputDialog(this,
										"Select a inside Object:", "Connection To?", JOptionPane.OK_OPTION,
										new ImageIcon(new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB)),
										possibilities, "");
								if (selected != null) {
									e = new Edge(selected.object, tempCps, model.getMaxCapacity());
									controller.addEdgeOnCanvas(e);
								}
							} else {
								Node n = new Node("Node");

								n.setPosition(x, y);
								controller.addObjUpperNode(n, thisUpperNode);
								e = new Edge(n, tempCps, model.getMaxCapacity());
								controller.addEdgeOnCanvas(e);
							}

						}

					}
				}
			}
			// Edge auf eine Edge gezogen?
			if (onEdge && !checkForReplacement(x, y)) {
				Edge p = mousePositionOnEdge(x, y);
				if (p != null) {
					Edge e1;
					Edge e2;

					node = false;

					Node n = new Node("Node");

					n.setPosition(x, y);
					controller.addObjectCanvas(n);

					AbstractCanvasObject r, k;
					r = p.getA();
					k = p.getB();

					e = new Edge(n, tempCps, model.getMaxCapacity());

					e1 = new Edge(n, r, model.getMaxCapacity());

					e2 = new Edge(n, k, model.getMaxCapacity());

					controller.removeEdgesOnCanvas(p);
					controller.addEdgeOnCanvas(e);
					controller.addEdgeOnCanvas(e1);
					controller.addEdgeOnCanvas(e2);
				}
			} else {
				mayBeReplaced = null;
			}

			// ins leere Gedragged
			if (node && !checkForReplacement(x, y)) {
				Node n = new Node("Node");

				n.setPosition(x, y);

				controller.addObjectCanvas(n);

				e = new Edge(n, tempCps, model.getMaxCapacity());

				controller.addEdgeOnCanvas(e);
			} else {
				mayBeReplaced = null;
			}

			// Wenn ein Node ohne Connections da ist
			if (deleteNode) {
				controller.delCanvasObject(tempCps, true);
				tempCps = null;
			}
		}
	}

	/**
	 * Checks if the mouse is on an Edge.
	 *
	 * @param x Position of the Mouse
	 * @param y Position of the Mouse
	 * @return CpsEdge the Mouse is on, null if the mouse is not on an Edge
	 */
	protected Edge mousePositionOnEdge(int x, int y) {
		x += controller.getScaleDiv2();
		y += controller.getScaleDiv2();
		for (Edge p : model.getEdgesOnCanvas()) {
			Line2D l = new Line2D.Float(p.getA().getPosition().getX(), p.getA().getPosition().getY(),
					p.getB().getPosition().getX(), p.getB().getPosition().getY());

			int[] positions = determineMousePositionOnEdge(p);
			int lx = positions[0];
			int ly = positions[1];
			int hx = positions[2];
			int hy = positions[3];

			// distance from a point to a line and between both Objects
			if (l.ptLineDistSq(x - model.getScaleDiv2(), y - model.getScaleDiv2()) < 20 && x > lx && x < hx && y > ly
					&& y < hy) {
				return p;
			}
		}
		return null;
	}

	/**
	 * set toolTip
	 *
	 * @param bool
	 */
	public void setToolTip(boolean bool) {
		this.toolTip = bool;
	}

	/**
	 * Set the Mouse
	 *
	 * @param x
	 * @param y
	 */
	public void setXY(int x, int y) {
		this.x = x;
		this.y = y;
	}

	@Override
	public boolean checkForReplacement(int x, int y) {

		return checkForReplacement(model.getObjectsOnCanvas(), null, x, y);
	}

	@Override
	public void tryToAlignObjects() {
		/**
		 * Align all Objects
		 */
		for (AbstractCanvasObject cps : model.getObjectsOnCanvas())
			align(cps, 3 * model.getScaleDiv2());

		/**
		 * AutoSave new Positons
		 */
		try {
			controller.autoSave();
		} catch (IOException ex) {
			System.err.println("AutoSave error by aligning");
			ex.printStackTrace();
		}
	}

	@Override
	public void closeUpperNodeTab(int upperNodeId) {
		JTabbedPane tabbedPaneInner = (JTabbedPane) getParent().getParent().getParent().getParent();
		for (int i = 1; i < tabbedPaneInner.getTabCount(); i++) {
			if (((GroupNodeCanvas) ((JScrollPane) tabbedPaneInner.getComponentAt(i)).getViewport().getComponent(0))
					.getGroupNode().getId() == upperNodeId) {
				tabbedPaneInner.remove(i);
				break;
			}
		}
	}

}