praktikum-holons/src/ui/view/MyCanvas.java

package ui.view;

import classes.*;

import com.google.gson.JsonParseException;

import ui.controller.Control;
import ui.controller.UpdateController;
import ui.model.Model;

import javax.swing.*;

import java.awt.*;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.font.LineMetrics;
import java.awt.geom.Line2D;
import java.io.IOException;
import java.util.ArrayList;

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

	private static final long serialVersionUID = 1L;

	/**
	 * Constructor.
	 *
	 * @param mod
	 *            the Model
	 * @param control
	 *            the Controller
	 * @param unitGraph
	 */
	public MyCanvas(Model mod, Control control, UnitGraph unitGraph) {
		toolTip = false;
		this.controller = control;
		this.model = mod;
		scalediv20 = model.getScale() / 20;

		showedInformation[0] = true;
		showedInformation[1] = true;
		showedInformation[3] = false;
		showedInformation[4] = true;
		control.setMaxCapacity(10000);

		popmenu.add(itemCut);
		popmenu.add(itemCopy);
		popmenu.add(itemPaste);
		popmenu.add(itemDelete);
		popmenu.addSeparator();
		popmenu.add(itemGroup);
		popmenu.add(itemUngroup);
		popmenu.add(itemTrack);
		popmenu.add(itemUntrack);
		popmenu.add(itemCreateTemplate);

		updCon = new UpdateController(mod, control);

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

		itemCut.setText(Languages.getLanguage()[95]);
		
		itemGroup.addActionListener(actionEvent -> {
			// calculate uppernode pos (taken from the controller)
				unPos = new Position(0, 0);
				animCps = new ArrayList<>();
				for (AbstractCpsObject cps : model.getSelectedCpsObjects()) {
					animCps.add(cps); // add to animation Cps ArrayList
					unPos.x += cps.getPosition().x;
					unPos.y += cps.getPosition().y;
				}
				unPos.x /= animCps.size();
				unPos.y /= animCps.size();

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

				animT = new javax.swing.Timer(animDelay, actionEvent1 -> {
					if (animDuration - animDelay > 0 && animCps.size() > 1) {
						for (AbstractCpsObject animCpObject : animCps) {
							double x1 = animCpObject.getPosition().x - unPos.x;
							double y1 = animCpObject.getPosition().y - unPos.y;
							animCpObject.getPosition().x -= x1 / animSteps;
							animCpObject.getPosition().y -= y1 / animSteps;
						}
						repaint();
						animDuration -= animDelay;
						animSteps--;
					} else {
						animDuration = ANIMTIME;
						animSteps = animDuration / animDelay;
						animT.stop();
						for (int i = 0; i < animCps.size(); i++) {
							animCps.get(i).getPosition().x = savePos.get(i).x;
							animCps.get(i).getPosition().y = savePos.get(i).y;
						}
						controller.addUpperNode("NodeOfNode", null, animCps);
						controller.calculateStateForCurrentTimeStep();
						triggerUpdateController();
						repaint();
					}
				});
				animT.start();
			});

		itemUngroup
				.addActionListener(actionEvent -> {
					// save old Position
					JTabbedPane tabbedPaneInner = (JTabbedPane) getParent()
							.getParent().getParent();
					for (int i = 1; i < tabbedPaneInner.getTabCount(); i++) {
						if (((UpperNodeCanvas) ((JScrollPane) tabbedPaneInner
								.getComponentAt(i)).getViewport().getComponent(
								0)).upperNode.getId() == tempCps.getId()) {
							tabbedPaneInner.remove(i);
							break;
						}
					}

					savePos = new ArrayList<>();
					animCps = ((CpsUpperNode) tempCps).getNodes();
					controller.delUpperNode((CpsUpperNode) tempCps, null);

					for (int i = 0; i < animCps.size(); i++) {
						savePos.add(new Position(0, 0));
						savePos.get(i).x = animCps.get(i).getPosition().x;
						savePos.get(i).y = animCps.get(i).getPosition().y;
					}
					for (AbstractCpsObject cps : animCps) {
						int x = tempCps.getPosition().x;
						int y = tempCps.getPosition().y;

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

					animT = new javax.swing.Timer(
							animDelay,
							actionEvent1 -> {
								if (animDuration - animDelay >= 0) {
									for (int i = 0; i < animCps.size(); i++) {
										double x1 = animCps.get(i)
												.getPosition().x
												- savePos.get(i).x;
										double y1 = animCps.get(i)
												.getPosition().y
												- savePos.get(i).y;
										animCps.get(i).getPosition().x -= x1
												/ animSteps;
										animCps.get(i).getPosition().y -= y1
												/ animSteps;
									}
									repaint();
									animDuration -= animDelay;
									animSteps--;
								} else {
									animDuration = ANIMTIME;
									animSteps = animDuration / animDelay;
									animT.stop();
									for (int i = 0; i < animCps.size(); i++) {
										animCps.get(i).getPosition().x = savePos
												.get(i).x;
										animCps.get(i).getPosition().y = savePos
												.get(i).y;
									}

									controller
											.calculateStateForCurrentTimeStep();
									triggerUpdateController();
									repaint();
								}
							});
					animT.start();
				});

		// adds the selected object(s) to the statistic panel
		itemTrack.addActionListener(actionEvent -> {
			for (AbstractCpsObject o : model.getSelectedCpsObjects()) {
				boolean found = false;
				if (controller.getTrackingObj() != null) {
					if (controller.getTrackingObj().contains(o)) {
						found = true;
					}
				}
				if (!found) {
					controller.addTrackingObj(o);
					if (o instanceof HolonObject) {
						((HolonObject) o).updateTrackingInfo();
					}
				}
				if (model.getShowConsoleLog()) {
					controller.addTextToConsole("Tracking: ", Color.BLACK, 12,
							false, false, false);
					controller.addTextToConsole("" + o.getName(), Color.BLUE,
							12, true, false, false);
					controller.addTextToConsole(", ID:", Color.BLACK, 12,
							false, false, false);
					controller.addTextToConsole("" + o.getId(), Color.RED, 12,
							true, false, true);
				}
			}
		});

		itemUntrack.addActionListener(actionEvent -> {
			for (AbstractCpsObject o : model.getSelectedCpsObjects()) {
				if (o instanceof HolonObject) {
					boolean found = false;
					if (controller.getTrackingObj() != null) {
						for (AbstractCpsObject obj : controller
								.getTrackingObj()) {
							if (obj instanceof HolonObject) {
								if (obj.getId() == o.getId()) {
									found = true;
								}
							}
						}
					}
					if (found) {
						// Removed from tracking array and tracking
						// information reseted
				controller.removeTrackingObj(o);
				((HolonObject) o).setTrackingProd(new float[100]);
				((HolonObject) o).setTrackingCons(new float[100]);
			}
			if (model.getShowConsoleLog()) {
				controller.addTextToConsole("Untracking: ", Color.BLACK, 12,
						false, false, false);
				controller.addTextToConsole("" + o.getName(), Color.BLUE, 12,
						true, false, false);
				controller.addTextToConsole(", ID:", Color.BLACK, 12, false,
						false, false);
				controller.addTextToConsole("" + o.getId(), Color.RED, 12,
						true, false, true);
			}
		}
	}
})		;

		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().getClass() == CpsNode.class && edgeHighlight.getA().getConnections().size() == 0){ 
						controller.delCanvasObject(edgeHighlight.getA(), false);	
					}
					if(edgeHighlight.getB().getClass() == CpsNode.class && edgeHighlight.getB().getConnections().size() == 0){ //Look on the other end of the cable
						controller.delCanvasObject(edgeHighlight.getB(), false);
					}
					edgeHighlight = null;
				}
				boolean save = false;
				for (int j = 0; j < model.getSelectedCpsObjects().size(); j++) {
					AbstractCpsObject cps = model.getSelectedCpsObjects()
							.get(j);
					if (j == model.getSelectedCpsObjects().size() - 1)
						save = true;
					controller.delCanvasObject(cps, save);
					controller.removeTrackingObj(cps);
					// Remove UpperNodeTab if UpperNode deleted
				if (cps instanceof CpsUpperNode) {
					JSplitPane tempSplit = (JSplitPane) getParent().getParent()
							.getParent().getParent();
					JTabbedPane tabbedPane;
					JTabbedPane tabbedPane2;
					// if SplitView is activated
					if (tempSplit.getLeftComponent() instanceof JTabbedPane
							&& tempSplit.getRightComponent() instanceof JTabbedPane) {
						tabbedPane = (JTabbedPane) tempSplit.getLeftComponent();
						tabbedPane2 = (JTabbedPane) tempSplit
								.getRightComponent();
					} else {
						tabbedPane = (JTabbedPane) tempSplit.getLeftComponent();
						tabbedPane2 = null;
					}
					// Look if the uppernode is open in a Tab
					for (int i = 4; i < tabbedPane.getTabCount(); i++) {
						if (tabbedPane.getComponentAt(i) != null
								&& ((UpperNodeCanvas) ((JScrollPane) tabbedPane
										.getComponentAt(i)).getViewport()
										.getComponent(0)).upperNode.getId() == cps
										.getId()) {
							((ButtonTabComponent) tabbedPane
									.getTabComponentAt(i)).removeTabs();
							break;
						}
					}
					// If SplitView is on and the view on
					// tabbedPane2 is the deleted upperNode
					try {
						if (tabbedPane2 != null
								&& ((UpperNodeCanvas) ((JScrollPane) tabbedPane2
										.getSelectedComponent()).getViewport()
										.getComponent(0)).upperNode.getId() == cps
										.getId()) {
							((ButtonTabComponent) tabbedPane
									.getTabComponentAt(tabbedPane2
											.getSelectedIndex())).removeTabs();
						}
					} catch (Exception e2) {
					}
				}
				toolTip = false;
			}
			model.getSelectedCpsObjects().clear();
			tempCps = null;
			repaint();
		});

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

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

		itemPaste
				.addActionListener(actionEvent -> {
					try {
						controller.paste(null, mousePosition);
						unitGraph.update(model.getSelectedCpsObjects());

					} 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
	 */
	public void paintComponent(Graphics g) {
		String maxCap = null;
		super.paintComponent(g);
		// Rendering
		
		g2 = (Graphics2D) g;
		
		RenderingHints rh = new RenderingHints(RenderingHints.KEY_ANTIALIASING,
				RenderingHints.VALUE_ANTIALIAS_ON);
		g2.setRenderingHints(rh);

		// Paint the Background
		if (!model.getCanvasImagePath().isEmpty()) {
			img = new ImageIcon(model.getCanvasImagePath()).getImage();
			switch (model.getCanvasImageMode()) {
			case BackgroundPopUp.IMAGE_PIXELS:
				g2.drawImage(img, 0, 0, img.getWidth(null),
						img.getHeight(null), null);
				break;
			case BackgroundPopUp.STRETCHED:
				g2.drawImage(img, 0, 0, model.getCanvasX(), model.getCanvasY(),
						null);
				break;
			case BackgroundPopUp.CUSTOM:
				g2.drawImage(img, 0, 0, model.getCanvasImageWidth(),
						model.getCanvasImageHeight(), null);
				break;
			default:
				break;
			}
		}

		// SubNet Coloring
		int i = 0;
		for (SubNet s : controller.getSimManager().getSubNets()) {

			if (model.getSubNetColors().size() - 1 < i) {
				controller.addSubNetColor(new Color(
						(int) (Math.random() * 255),
						(int) (Math.random() * 255),
						(int) (Math.random() * 255)));
			}
			if (showedInformation[3]) {
				for (HolonObject cps : s.getObjects()) {
					cps.setBorderColor(model.getSubNetColors().get(i));
				}
			}
			i++;
		}

		// drawEdges that is being dragged
		if (drawEdge) {
			g2.setColor(Color.BLACK);
			g2.setStroke(new BasicStroke(2));
			g2.drawLine(tempCps.getPosition().x, tempCps.getPosition().y, x, y);
		}

		for (CpsEdge con : model.getEdgesOnCanvas()) {
			maxCap = paintEdge(con, maxCap);
		}

		// Highlighted Edge
		if (model.getSelectedObjectID() > 0
				|| !model.getSelectedCpsObjects().isEmpty()
				|| !tempSelected.isEmpty()) {
			g2.setColor(Color.BLUE);
			for (CpsEdge con : model.getEdgesOnCanvas()) {
				if (con.getFlow() <= con.getCapacity()) {
					g2.setStroke(new BasicStroke(Math.min(
							((con.getFlow() / con.getCapacity() * 3) + 1), 4)));
				} else {
					g2.setStroke(new BasicStroke(2));
				}

				maxCap = drawEdgeLine(con, maxCap);
			}
		} else if (edgeHighlight != null) {
			g2.setColor(Color.BLUE);
			if (edgeHighlight.getFlow() <= edgeHighlight.getCapacity()) {
				g2.setStroke(new BasicStroke(Math.min(((edgeHighlight.getFlow()
						/ edgeHighlight.getCapacity() * 3) + 1), 4)));
			} else {
				g2.setStroke(new BasicStroke(2));
			}
			g2.drawLine(edgeHighlight.getA().getPosition().x, edgeHighlight
					.getA().getPosition().y,
					edgeHighlight.getB().getPosition().x, edgeHighlight.getB()
							.getPosition().y);

			maxCap = setCapacityString(edgeHighlight, maxCap);

			if (showedInformation[0]) {
				g2.drawString(edgeHighlight.getFlow() + "/" + maxCap,
						(edgeHighlight.getA().getPosition().x + edgeHighlight
								.getB().getPosition().x) / 2, (edgeHighlight
								.getA().getPosition().y + edgeHighlight.getB()
								.getPosition().y) / 2);
			}
		}


		/**
		 * highlight the Object that would be replaced
		 */
		highlightMayBeReplaced(g2);
		
		// Objects
		for (AbstractCpsObject cps : model.getObjectsOnCanvas()) {
			// Border Highlighting
			if (showedInformation[3]) {
				g2.setColor(cps.getBorderColor());
				if (g2.getColor() != Color.WHITE && !(cps instanceof CpsNode)) {
					g2.fillRect(
							(int) (cps.getPosition().x
									- controller.getScaleDiv2() - scalediv20 - 3),
							(int) (cps.getPosition().y
									- controller.getScaleDiv2() - scalediv20 - 3),
							(int) (controller.getScale() + ((scalediv20 + 3) * 2)),
							(int) (controller.getScale() + ((scalediv20 + 3) * 2)));
				}
			}

			setEdgePictureAndHighlighting(cps);

			g2.drawImage(img, cps.getPosition().x - controller.getScaleDiv2(),
					cps.getPosition().y - controller.getScaleDiv2(),
					controller.getScale(), controller.getScale(), null);

			paintSupplyBar(g, cps);
		}
		
		// Dragged marker Highlighting
		if (doMark) {
			g2.setColor(Color.BLACK);
			g2.setStroke(new BasicStroke(0));
			drawMarker();
		}
		// Tooltip
		showTooltip(g);
	}

	@Override
	public void mouseClicked(MouseEvent e) {
		if (e.getButton() == MouseEvent.BUTTON1) {
			if (model.getPropertyTable().getRowCount() > 0) {
				for (int i = model.getPropertyTable().getRowCount() - 1; i > -1; i--) {
					model.getPropertyTable().removeRow(i);
				}
			}
			triggerUpdateController();
		}

		stopEditing();
	}

	@Override
	public void mouseEntered(MouseEvent e) {
	}

	@Override
	public void mouseExited(MouseEvent e) {
	}

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

				setConsoleTextAfterSelect(cps);

				dragging = true;

				if (e.isControlDown() && tempCps != null) {
					if (model.getSelectedCpsObjects().contains(tempCps)) {
						controller.deleteSelectedObject(tempCps);
							//TODO: RemoveDepth
					} else {
						controller.addSelectedObject(tempCps);
						if(tempCps instanceof CpsUpperNode)
							controller.getObjectsInDepth();
					}

				}

				// 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);
			controller.setSelectedObjectID(0);
			if (!e.isControlDown() && e.getButton() != MouseEvent.BUTTON3) {
				model.getSelectedCpsObjects().clear();
			}
		}

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

		repaint();
	}

	@Override
	public void mouseReleased(MouseEvent e) {
		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.getSelectedCpsObjects().size()==1 
					&& checkForReplacement(model.getObjectsOnCanvas(), tempCps, tempCps.getPosition().x, tempCps.getPosition().y)){
				/**
				 * replace on canvas (will save)
				 */
				controller.replaceCanvasObject(mayBeReplaced, tempCps);
				mayBeReplaced=null;
			}
		}

		if (!e.isControlDown() && !dragged && tempCps != null
				&& MouseEvent.BUTTON3 != e.getButton()) {
			model.getSelectedCpsObjects().clear();
			controller.addSelectedObject(tempCps);
			model.setSelectedCpsObject(tempCps);
			if(tempCps instanceof CpsUpperNode)
				controller.getObjectsInDepth();
		}

		dragged = false;

		// Rightclick List
		setRightClickMenu(e);

		markObjects();

		if (doubleClick() && tempCps != null && tempCps instanceof HolonSwitch
				&& MouseEvent.BUTTON3 != e.getButton()) {
			((HolonSwitch) tempCps).switchState();
		}

		controller.calculateStateForTimeStep(model.getCurIteration());

		triggerUpdateController();

		repaint();

	}

	@Override
	public void mouseDragged(MouseEvent e) {
		// If Edge is drawn
		x = e.getX();
		y = e.getY();
		
		if (!model.getSelectedCpsObjects().contains(tempCps) && !doMark) {
			model.getSelectedCpsObjects().clear();
			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
				if (e.getX() < controller.getScaleDiv2())
					x = controller.getScaleDiv2();
				else if (e.getX() > this.getWidth() - controller.getScaleDiv2())
					x = this.getWidth() - controller.getScaleDiv2();
				if (e.getY() < controller.getScaleDiv2())
					y = controller.getScaleDiv2();
				else if (e.getY() > this.getHeight()
						- controller.getScaleDiv2())
					y = this.getHeight() - controller.getScaleDiv2();

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

				tempCps.setPosition(x, y); // Drag Position
				// ToolTipText Position and name
				toolTip = true;
				toolTipText = tempCps.getName() + ", " + tempCps.getId();
				toolTipPos.x = tempCps.getPosition().x
						- controller.getScaleDiv2();
				toolTipPos.y = tempCps.getPosition().y
						+ controller.getScaleDiv2();

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

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

						cps.setPosition(x, y);
					}
				}
				
				/**
				 * check if something might be replaced
				 */
				if(model.getSelectedCpsObjects().size()==1)
					checkForReplacement(model.getObjectsOnCanvas(), tempCps, x, y);
				
				repaint();
			} catch (Exception eex) {
			}
		}

		// Mark Objects
		if (doMark) {
			tempSelected.clear();
			for (AbstractCpsObject 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().x + model.getScaleDiv2()
						&& y1 <= cps.getPosition().y + model.getScaleDiv2()
						&& x2 >= cps.getPosition().x
						&& y2 >= cps.getPosition().y) {
					tempSelected.add(cps);

				}
			}
		}

		repaint();

	}

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

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

			on = setToolTipInfoAndPosition(on, cps);
		}
		toolTip = on;
		repaint();
	}

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

			for (AbstractCpsObject cps : model.getObjectsOnCanvas()) {
				cx = cps.getPosition().x - controller.getScaleDiv2();
				cy = cps.getPosition().y - controller.getScaleDiv2();
				if (x - controller.getScale() <= cx
						&& y - controller.getScale() <= cy && x >= cx
						&& y >= cy && cps != tempCps) {
					node = false;
					onEdge = false;
					for (CpsEdge 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() == CpsNode.class
								&& e.getA().getConnections().isEmpty()) {
							tempCps = e.getA();
							deleteNode = true;
						}
						if (e.getB().getClass() == CpsNode.class
								&& e.getB().getConnections().isEmpty()) {
							deleteNode = true;
						}
					} else {
						e = new CpsEdge(cps, tempCps, model.getMaxCapacity());
						controller.addEdgeOnCanvas(e);
					}
				}
			}
			// Edge auf eine Edge gezogen?
			if (onEdge && !checkForReplacement(x, y)) {
				CpsEdge p = mousePositionOnEdge(x, y);
				if (p != null) {
					CpsEdge e1;
					CpsEdge e2;

					node = false;

					CpsNode n = new CpsNode("Node");

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

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

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

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

					e2 = new CpsEdge(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)) {
				CpsNode n = new CpsNode("Node");

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

				e = new CpsEdge(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
	 */
	private CpsEdge mousePositionOnEdge(int x, int y) {
		x += controller.getScaleDiv2();
		y += controller.getScaleDiv2();
		for (CpsEdge p : model.getEdgesOnCanvas()) {
			Line2D l = new Line2D.Float(p.getA().getPosition().x, p.getA()
					.getPosition().y, p.getB().getPosition().x, p.getB()
					.getPosition().y);

			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;
	}

	void updateLanguages() {
		itemCut.setText(Languages.getLanguage()[95]);
		itemCopy.setText(Languages.getLanguage()[96]);
		itemPaste.setText(Languages.getLanguage()[97]);
		itemDelete.setText(Languages.getLanguage()[98]);
		itemGroup.setText(Languages.getLanguage()[99]);
		itemUngroup.setText(Languages.getLanguage()[100]);
		itemTrack.setText(Languages.getLanguage()[101]);
		itemUntrack.setText(Languages.getLanguage()[102]);
	}

	/**
	 * Set if Information should be shown.
	 *
	 * @param connection
	 *            boolean for conecction
	 * @param object
	 *            boolean for objects
	 * @param nodeOfnode
	 */
	void setShowedInformation(boolean connection, boolean object,
			boolean border, boolean nodeOfnode) {
		showedInformation[0] = connection;
		showedInformation[1] = object;
		showedInformation[3] = border;
		showedInformation[4] = nodeOfnode;
	}

	/**
	 * Returns if Information should be shown.
	 *
	 * @return Array of boolean [0] = connection, [1] = objects
	 */
	boolean[] getShowedInformation() {
		return showedInformation;
	}

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

	/**
	 * Set the Mouse
	 *
	 * @param x
	 * @param y
	 */
	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(AbstractCpsObject 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();
		}
	}
}