設(shè)計模式實驗6命令模式

1、實驗報告課程： 設(shè)計模式實驗 學(xué)期： 2010-2011學(xué)年 第一學(xué)期 任課教師： 專業(yè)： 學(xué)號： 姓名： 成績： 實驗6 命令模式1.題目: 使用命令模式實現(xiàn)在用戶界面中,用戶選擇需要繪制的圖形(矩形、三角形、圓形),并在用戶界面中繪制該圖形,并能夠?qū)崿F(xiàn)撤銷多步的功能。2.模式設(shè)計的UML類圖：3.程序源代碼：（1）命令接口Command.java:public interface Command public void execute();public void undo();public class NoCommand implements Commandpublic void exec

2、ute()public void undo() （2）繪制圖形的各個類：import java.awt.*;import java.awt.geom.*;import javax.swing.*;public class DrawSquare extends JPanel private static DrawSquare panel=new DrawSquare(); public static DrawSquare getJPanel() return panel; public void paintComponent(Graphics g)Graphics2D g2 = (Graphic

3、s2D)g;super.paintComponent(g);double rectX =130;double rectY = 40; /設(shè)置坐標(biāo)的初始值double width = 100;double height = 100;Rectangle2D rect = new Rectangle2D.Double(rectX,rectY,width,height);g2.draw(rect); public class DrawRectanqleLong extends JPanel private static DrawRectanqleLong panel=new DrawRectanqle

4、Long();public static DrawRectanqleLong getJPanel() return panel; public void paintComponent(Graphics g)Graphics2D g2 = (Graphics2D)g;super.paintComponent(g);double rectX = 110;double rectY = 40; /設(shè)置坐標(biāo)的初始值double width = 150;double height = 100;Rectangle2D rect = new Rectangle2D.Double(rectX,rectY,wid

5、th,height);g2.draw(rect); public class DrawRectanqleHeight extends JPanel private static DrawRectanqleHeight panel=new DrawRectanqleHeight();public static DrawRectanqleHeight getJPanel() return panel; public void paintComponent(Graphics g)Graphics2D g2 = (Graphics2D)g;super.paintComponent(g);double

6、rectX = 135;double rectY = 30; /設(shè)置坐標(biāo)的初始值double width = 85;double height = 130;Rectangle2D rect = new Rectangle2D.Double(rectX,rectY,width,height);g2.draw(rect); public class DrawTrianqle extends JPanel private static DrawTrianqle panel=new DrawTrianqle();public static DrawTrianqle getJPanel()return

7、panel; public void paintComponent(Graphics g)Graphics2D g2 = (Graphics2D)g;super.paintComponent(g);double point1X =180;double point1Y = 40; /設(shè)置坐標(biāo)的初始值double point2X =130;double point2Y = 120;double point3X =210;double point3Y = 150;Line2D line1 = new Line2D.Double(point1X,point1Y,point2X,point2Y);Lin

8、e2D line2 = new Line2D.Double(point1X,point1Y,point3X,point3Y);Line2D line3 = new Line2D.Double(point2X,point2Y,point3X,point3Y);g2.draw(line1); g2.draw(line2); g2.draw(line3); public class DrawRightanqleTrianqle extends JPanelprivate static DrawRightanqleTrianqle panel=new DrawRightanqleTrianqle();

9、public static DrawRightanqleTrianqle getJPanel() return panel; public void paintComponent(Graphics g)Graphics2D g2 = (Graphics2D)g;super.paintComponent(g);double point1X =180;double point1Y = 20; /設(shè)置坐標(biāo)的初始值double point2X =130;double point2Y = 150;double point3X =230;double point3Y = 150;Line2D line1

10、= new Line2D.Double(point1X,point1Y,point2X,point2Y);Line2D line2 = new Line2D.Double(point1X,point1Y,point3X,point3Y);Line2D line3 = new Line2D.Double(point2X,point2Y,point3X,point3Y);g2.draw(line1); g2.draw(line2); g2.draw(line3); public class DrawIsoscelesTrianqle extends JPanelprivate static Dra

11、wIsoscelesTrianqle panel=new DrawIsoscelesTrianqle();public static DrawIsoscelesTrianqle getJPanel() return panel; public void paintComponent(Graphics g)Graphics2D g2 = (Graphics2D)g;super.paintComponent(g);double point1X =150;double point1Y = 20; /設(shè)置坐標(biāo)的初始值double point2X =150;double point2Y = 150;do

12、uble point3X =250;double point3Y = 150;Line2D line1 = new Line2D.Double(point1X,point1Y,point2X,point2Y);Line2D line2 = new Line2D.Double(point1X,point1Y,point3X,point3Y);Line2D line3 = new Line2D.Double(point2X,point2Y,point3X,point3Y);g2.draw(line1); g2.draw(line2); g2.draw(line3); public class Dr

13、awCircle extends JPanelprivate static DrawCircle panel=new DrawCircle();public static DrawCircle getJPanel() return panel; public void paintComponent(Graphics g)Graphics2D g2 = (Graphics2D)g;super.paintComponent(g);double circleX = 180;double circleY = 90;double radius = 50; /設(shè)置坐標(biāo)的初始值Ellipse2D circl

14、e = new Ellipse2D.Double();circle.setFrameFromCenter(circleX, circleY,circleX+radius,circleY+radius);g2.draw(circle); /畫圓public class DrawEllipse extends JPanel private static DrawEllipse panel=new DrawEllipse();public static DrawEllipse getJPanel()return panel; public void paintComponent(Graphics g

15、)Graphics2D g2 = (Graphics2D)g;super.paintComponent(g);double ellipseX = 115;double ellipseY = 30; /設(shè)置坐標(biāo)的初始值double width = 150;double height = 100;Rectangle2D rect = new Rectangle2D.Double(ellipseX,ellipseY,width,height);Ellipse2D ellipse = new Ellipse2D.Double();ellipse.setFrame(rect);g2.draw(ellip

16、se); public class DrawSolidCircle extends JPanelprivate static DrawSolidCircle panel=new DrawSolidCircle();public static DrawSolidCircle getJPanel()return panel; public void paintComponent(Graphics g)Graphics2D g2 = (Graphics2D)g;super.paintComponent(g);double circleX = 180;double circleY = 90;doubl

17、e radius = 50; /設(shè)置坐標(biāo)的初始值Ellipse2D circle = new Ellipse2D.Double();circle.setFrameFromCenter(circleX, circleY,circleX+radius,circleY+radius);g2.setPaint(Color.BLUE); /設(shè)置圓的顏色g2.fill(circle);g2.draw(circle); /畫圓（3）實現(xiàn)各種命令的類：public class DrawSquareCommand implements CommandDrawSquare drawSquare;public Dr

18、awSquareCommand(DrawSquare drawSquare) this.drawSquare = drawSquare; public void execute()drawSquare.setVisible(true);DrawFrame.getJFrame().add(drawSquare);public void undo()drawSquare.setVisible(true);DrawFrame.getJFrame().add(drawSquare); public class DrawRectanqleLongCommand implements CommandDra

19、wRectanqleLong drawRectanqleLong;public DrawRectanqleLongCommand(DrawRectanqleLong drawRectanqleLong) this.drawRectanqleLong = drawRectanqleLong;public void execute()drawRectanqleLong.setVisible(true);DrawFrame.getJFrame().add(drawRectanqleLong);public void undo()drawRectanqleLong.setVisible(true);D

20、rawFrame.getJFrame().add(drawRectanqleLong); public class DrawRectanqleHeightCommand implements CommandDrawRectanqleHeight drawRectanqleHeight;public DrawRectanqleHeightCommand(DrawRectanqleHeight drawRectanqleHeight)this.drawRectanqleHeight = drawRectanqleHeight; public void execute()drawRectanqleH

21、eight.setVisible(true);DrawFrame.getJFrame().add(drawRectanqleHeight);public void undo()drawRectanqleHeight.setVisible(true);DrawFrame.getJFrame().add(drawRectanqleHeight); public class DrawTrianqleCommand implements CommandDrawTrianqle drawTrianqle;public DrawTrianqleCommand(DrawTrianqle drawTrianq

22、le) this.drawTrianqle = drawTrianqle; public void execute()drawTrianqle.setVisible(true);DrawFrame.getJFrame().add(drawTrianqle);public void undo()drawTrianqle.setVisible(true);DrawFrame.getJFrame().add(drawTrianqle); public class DrawRightanqleTrianqleCommand implements CommandDrawRightanqleTrianql

23、e drawRightanqleTrianqle;public DrawRightanqleTrianqleCommand(DrawRightanqleTrianqle drawRightanqleTrianqle)this.drawRightanqleTrianqle = drawRightanqleTrianqle;public void execute()drawRightanqleTrianqle.setVisible(true);DrawFrame.getJFrame().add(drawRightanqleTrianqle);public void undo()drawRighta

24、nqleTrianqle.setVisible(true);DrawFrame.getJFrame().add(drawRightanqleTrianqle); public class DrawIsoscelesTrianqleCommand implements CommandDrawIsoscelesTrianqle drawIsoscelesTrianqle;public DrawIsoscelesTrianqleCommand(DrawIsoscelesTrianqle drawIsoscelesTrianqle)this.drawIsoscelesTrianqle = drawIs

25、oscelesTrianqle;public void execute()drawIsoscelesTrianqle.setVisible(true);DrawFrame.getJFrame().add(drawIsoscelesTrianqle);public void undo()drawIsoscelesTrianqle.setVisible(true);DrawFrame.getJFrame().add(drawIsoscelesTrianqle); public class DrawCircleCommand implements CommandDrawCircle drawCirc

26、le;public DrawCircleCommand(DrawCircle drawCircle)this.drawCircle = drawCircle;public void execute()drawCircle.setVisible(true);DrawFrame.getJFrame().add(drawCircle);public void undo()drawCircle.setVisible(true);DrawFrame.getJFrame().add(drawCircle); public class DrawEllipseCommand implements Comman

27、dDrawEllipse drawEllipse;public DrawEllipseCommand(DrawEllipse drawEllipse)this.drawEllipse = drawEllipse;public void execute()drawEllipse.setVisible(true);DrawFrame.getJFrame().add(drawEllipse);public void undo()drawEllipse.setVisible(true);DrawFrame.getJFrame().add(drawEllipse); public class DrawS

28、olidCircleCommand implements CommandDrawSolidCircle drawSolidCircle;public DrawSolidCircleCommand(DrawSolidCircle drawSolidCircle)this.drawSolidCircle = drawSolidCircle;public void execute()drawSolidCircle.setVisible(true);DrawFrame.getJFrame().add(drawSolidCircle);public void undo()drawSolidCircle.

29、setVisible(true);DrawFrame.getJFrame().add(drawSolidCircle); （4）遙控控制類RemoteControl.java：import java.util.ArrayList;public class RemoteControl Command firstCommands;Command secondCommands;Command thirdCommands;ArrayList undoCommand =new ArrayList();Command noCommand=new NoCommand();public RemoteContr

30、ol()firstCommands = new Command3;secondCommands = new Command3;thirdCommands = new Command3;for(int i=0;i1)undoCommand.get(undoCommand.size()-1).undo();undoCommand.remove(undoCommand.size()-1);elseSystem.out.println(Here is end, you cant undo);（5）用戶界面類DrawFrame.java：import java.awt.*;import javax.sw

31、ing.*;import java.awt.event.*;public class DrawFrame extends JFrame private static DrawFrame frame = new DrawFrame();public static DrawFrame getJFrame()return frame; public DrawFrame() super(XXXXX); setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_

32、CLOSE); initComponents(); private void initComponents() remoteControl.setCommand(0, square, rectanqleLong, rectanqleHeight);remoteControl.setCommand(1, trianql, rightTrianqle, isoscelesTrianqle);remoteControl.setCommand(2, circl, ellipse, solidCircle);northPanel = new JPanel();southPanel = new JPane

33、l();nullJPanel = new JPanel(); JLabel rectanqleLabel = new JLabel(矩形 ,SwingConstants.LEFT);JLabel trianqleLabel = new JLabel(三角形,SwingConstants.CENTER);JLabel circleLabel = new JLabel(圓形,SwingConstants.RIGHT); rectanqleBox = new JComboBox(); trianqleBox = new JComboBox(); circleBox = new JComboBox()

34、; undoButton = new JButton(撤銷); rectanqleBox.addItem(); rectanqleBox.addItem(正方形);rectanqleBox.addItem(長方形（長寬）); rectanqleBox.addItem(長方形（長寬）) nullJPanel.setVisible(false); DrawSquare.getJPanel().setVisible(false); DrawRectanqleLong.getJPanel().setVisible(false); DrawRectanqleHeight.getJPanel().setV

35、isible(false); DrawTrianqle.getJPanel().setVisible(false); DrawRightanqleTrianqle.getJPanel().setVisible(false); DrawIsoscelesTrianqle.getJPanel().setVisible(false); DrawCircle.getJPanel().setVisible(false); DrawEllipse.getJPanel().setVisible(false); DrawSolidCircle.getJPanel().setVisible(false); re

36、moteControl.secondItemSelected(0); else if(String)rectanqleBox.getSelectedItem().equals(長方形（長寬）) nullJPanel.setVisible(false); DrawSquare.getJPanel().setVisible(false); DrawRectanqleLong.getJPanel().setVisible(false); DrawRectanqleHeight.getJPanel().setVisible(false); DrawTrianqle.getJPanel().setVis

37、ible(false); DrawRightanqleTrianqle.getJPanel().setVisible(false); DrawIsoscelesTrianqle.getJPanel().setVisible(false); DrawCircle.getJPanel().setVisible(false); DrawEllipse.getJPanel().setVisible(false); DrawSolidCircle.getJPanel().setVisible(false); remoteControl.thirdItemSelected(0); ); trianqleB

38、ox.addActionListener(new ActionListener() /事件處理 public void actionPerformed(ActionEvent event) if(String)trianqleBox.getSelectedItem().equals(一般三角形) nullJPanel.setVisible(false); DrawSquare.getJPanel().setVisible(false); DrawRectanqleLong.getJPanel().setVisible(false); DrawRectanqleHeight.getJPanel(

39、).setVisible(false); DrawTrianqle.getJPanel().setVisible(false); DrawRightanqleTrianqle.getJPanel().setVisible(false); DrawIsoscelesTrianqle.getJPanel().setVisible(false); DrawCircle.getJPanel().setVisible(false); DrawEllipse.getJPanel().setVisible(false); DrawSolidCircle.getJPanel().setVisible(fals

40、e); remoteControl.firstItemSelected(1); else if(String)trianqleBox.getSelectedItem().equals(直角三角形) nullJPanel.setVisible(false); DrawSquare.getJPanel().setVisible(false); DrawRectanqleLong.getJPanel().setVisible(false); DrawRectanqleHeight.getJPanel().setVisible(false); DrawTrianqle.getJPanel().setV

41、isible(false); DrawRightanqleTrianqle.getJPanel().setVisible(false); DrawIsoscelesTrianqle.getJPanel().setVisible(false); DrawCircle.getJPanel().setVisible(false); DrawEllipse.getJPanel().setVisible(false); DrawSolidCircle.getJPanel().setVisible(false); remoteControl.secondItemSelected(1); else if(S

42、tring)trianqleBox.getSelectedItem().equals(等腰三角形) nullJPanel.setVisible(false); DrawSquare.getJPanel().setVisible(false); DrawRectanqleLong.getJPanel().setVisible(false); DrawRectanqleHeight.getJPanel().setVisible(false); DrawTrianqle.getJPanel().setVisible(false); DrawRightanqleTrianqle.getJPanel()

43、.setVisible(false); DrawIsoscelesTrianqle.getJPanel().setVisible(false); DrawCircle.getJPanel().setVisible(false); DrawEllipse.getJPanel().setVisible(false); DrawSolidCircle.getJPanel().setVisible(false); remoteControl.thirdItemSelected(1); ); circleBox.addActionListener(new ActionListener() /事件處理 p

44、ublic void actionPerformed(ActionEvent event) if(String)circleBox.getSelectedItem().equals(一般圓) nullJPanel.setVisible(false); DrawSquare.getJPanel().setVisible(false); DrawRectanqleLong.getJPanel().setVisible(false); DrawRectanqleHeight.getJPanel().setVisible(false); DrawTrianqle.getJPanel().setVisi

45、ble(false); DrawRightanqleTrianqle.getJPanel().setVisible(false); DrawIsoscelesTrianqle.getJPanel().setVisible(false); DrawCircle.getJPanel().setVisible(false); DrawEllipse.getJPanel().setVisible(false); DrawSolidCircle.getJPanel().setVisible(false); remoteControl.firstItemSelected(2); else if(Strin

46、g)circleBox.getSelectedItem().equals(橢圓) nullJPanel.setVisible(false); DrawSquare.getJPanel().setVisible(false); DrawRectanqleLong.getJPanel().setVisible(false); DrawRectanqleHeight.getJPanel().setVisible(false); DrawTrianqle.getJPanel().setVisible(false); DrawRightanqleTrianqle.getJPanel().setVisib

47、le(false); DrawIsoscelesTrianqle.getJPanel().setVisible(false); DrawCircle.getJPanel().setVisible(false); DrawEllipse.getJPanel().setVisible(false); DrawSolidCircle.getJPanel().setVisible(false); remoteControl.secondItemSelected(2); else if(String)circleBox.getSelectedItem().equals(實心圓) nullJPanel.s

48、etVisible(false); DrawSquare.getJPanel().setVisible(false); DrawRectanqleLong.getJPanel().setVisible(false); DrawRectanqleHeight.getJPanel().setVisible(false); DrawTrianqle.getJPanel().setVisible(false); DrawRightanqleTrianqle.getJPanel().setVisible(false); DrawIsoscelesTrianqle.getJPanel().setVisib

49、le(false); DrawCircle.getJPanel().setVisible(false); DrawEllipse.getJPanel().setVisible(false); DrawSolidCircle.getJPanel().setVisible(false); remoteControl.thirdItemSelected(2); ); undoButton.addActionListener(new ActionListener() public void actionPerformed(ActionEvent evt) nullJPanel.setVisible(false); DrawSquare.getJPanel().setVisible(false); DrawRectanqleLong.getJPanel().setVisible(false); DrawRectanqleHeight.getJPanel().setVisible(false); DrawTrianqle.getJPanel().setVisible(false); DrawRightan