设计模式实验6命模式

1、实验报告课程： 设计模式实验 学期： 2010-2011学年 第一学期 任课教师： 专业： 学号： 姓名： 成绩： 实验6 命令模式1.题目: 使用命令模式实现在用户界面中,用户选择需要绘制的图形(矩形、三角形、圆形),并在用户界面中绘制该图形,并能够实现撤销多步的功能。2.模式设计的UML类图：3.程序源代码：（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）绘制图形的各个类：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; /设置坐标的初始值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; /设置坐标的初始值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; /设置坐标的初始值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; /设置坐标的初始值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; /设置坐标的初始值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; /设置坐标的初始值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; /设置坐标的初始值Ellipse2D circl

14、e = new Ellipse2D.Double();circle.setFrameFromCenter(circleX, circleY,circleX+radius,circleY+radius);g2.draw(circle); /画圆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; /设置坐标的初始值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; /设置坐标的初始值Ellipse2D circle = new Ellipse2D.Double();circle.setFrameFromCenter(circleX, circleY,circleX+radius,circleY+radius);g2.setPaint(Color.BLUE); /设置圆的颜色g2.fill(circle);g2.draw(circle); /画圆（3）实现各种命令的类：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）遥控控制类RemoteControl.java：import java.util.ArrayList;public class RemoteControl Command firstCommands;Command secondCommands;Command thirdCommands;ArrayList<Command> undoCommand =new ArrayList();Command noCommand=new NoCommand();pub

30、lic RemoteControl()firstCommands = new Command3;secondCommands = new Command3;thirdCommands = new Command3;for(int i=0;i<3;i+)firstCommandsi = noCommand;secondCommandsi = noCommand;thirdCommandsi = noCommand;public void setCommand(int slot,Command firstCommand,Command secondCommand,Command thirdC

31、ommand)firstCommandsslot = firstCommand;secondCommandsslot = secondCommand;thirdCommandsslot = thirdCommand;public void firstItemSelected(int slot)firstCommandsslot.execute();undoCommand.add(firstCommandsslot);public void secondItemSelected(int slot)secondCommandsslot.execute();undoCommand.add(secon

32、dCommandsslot);public void thirdItemSelected(int slot)thirdCommandsslot.execute();undoCommand.add(thirdCommandsslot);public void undoButtonWasPushed()if(undoCommand.size()>1)undoCommand.get(undoCommand.size()-1).undo();undoCommand.remove(undoCommand.size()-1);elseSystem.out.println("Here is

33、end, you can't undo");（5）用户界面类DrawFrame.java：import java.awt.*;import javax.swing.*;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"); se

34、tSize(DEFAULT_WIDTH, DEFAULT_HEIGHT); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); initComponents(); private void initComponents() remoteControl.setCommand(0, square, rectanqleLong, rectanqleHeight);remoteControl.setCommand(1, trianql, rightTrianqle, isoscelesTrianqle);remote

35、Control.setCommand(2, circl, ellipse, solidCircle);northPanel = new JPanel();southPanel = new JPanel();nullJPanel = new JPanel(); JLabel rectanqleLabel = new JLabel("矩形 ",SwingConstants.LEFT);JLabel trianqleLabel = new JLabel("三角形",SwingConstants.CENTER);JLabel circleLabel = new

36、JLabel("圆形",SwingConstants.RIGHT); rectanqleBox = new JComboBox(); trianqleBox = new JComboBox(); circleBox = new JComboBox(); undoButton = new JButton("撤销"); rectanqleBox.addItem(""); rectanqleBox.addItem("正方形");rectanqleBox.addItem("长方形（长>宽）");

37、rectanqleBox.addItem("长方形（长<宽）"); trianqleBox.addItem("");trianqleBox.addItem("一般三角形"); trianqleBox.addItem("直角三角形");trianqleBox.addItem("等腰三角形"); circleBox.addItem("");circleBox.addItem("一般圆"); circleBox.addItem("椭圆"

38、);circleBox.addItem("实心圆"); northPanel.setLayout(new GridLayout(2,3); northPanel.add(rectanqleLabel);northPanel.add(trianqleLabel); northPanel.add(circleLabel); northPanel.add(rectanqleBox); northPanel.add(trianqleBox); northPanel.add(circleBox); southPanel.add(undoButton); add(northPanel,

39、BorderLayout.NORTH); add(southPanel,BorderLayout.SOUTH); add(nullJPanel); rectanqleBox.addActionListener(new ActionListener() /事件处理 public void actionPerformed(ActionEvent event) if(String)rectanqleBox.getSelectedItem().equals("正方形") nullJPanel.setVisible(false); DrawSquare.getJPanel().set

40、Visible(false); DrawRectanqleLong.getJPanel().setVisible(false); DrawRectanqleHeight.getJPanel().setVisible(false); DrawTrianqle.getJPanel().setVisible(false); DrawRightanqleTrianqle.getJPanel().setVisible(false); DrawIsoscelesTrianqle.getJPanel().setVisible(false); DrawCircle.getJPanel().setVisible

41、(false); DrawEllipse.getJPanel().setVisible(false); DrawSolidCircle.getJPanel().setVisible(false); remoteControl.firstItemSelected(0); else if(String)rectanqleBox.getSelectedItem().equals("长方形（长>宽）") nullJPanel.setVisible(false); DrawSquare.getJPanel().setVisible(false); DrawRectanqleLo

42、ng.getJPanel().setVisible(false); DrawRectanqleHeight.getJPanel().setVisible(false); DrawTrianqle.getJPanel().setVisible(false); DrawRightanqleTrianqle.getJPanel().setVisible(false); DrawIsoscelesTrianqle.getJPanel().setVisible(false); DrawCircle.getJPanel().setVisible(false); DrawEllipse.getJPanel(

43、).setVisible(false); DrawSolidCircle.getJPanel().setVisible(false); remoteControl.secondItemSelected(0); else if(String)rectanqleBox.getSelectedItem().equals("长方形（长<宽）") nullJPanel.setVisible(false); DrawSquare.getJPanel().setVisible(false); DrawRectanqleLong.getJPanel().setVisible(fals

44、e); DrawRectanqleHeight.getJPanel().setVisible(false); DrawTrianqle.getJPanel().setVisible(false); DrawRightanqleTrianqle.getJPanel().setVisible(false); DrawIsoscelesTrianqle.getJPanel().setVisible(false); DrawCircle.getJPanel().setVisible(false); DrawEllipse.getJPanel().setVisible(false); DrawSolid

45、Circle.getJPanel().setVisible(false); remoteControl.thirdItemSelected(0); ); trianqleBox.addActionListener(new ActionListener() /事件处理 public void actionPerformed(ActionEvent event) if(String)trianqleBox.getSelectedItem().equals("一般三角形") nullJPanel.setVisible(false); DrawSquare.getJPanel().

46、setVisible(false); DrawRectanqleLong.getJPanel().setVisible(false); DrawRectanqleHeight.getJPanel().setVisible(false); DrawTrianqle.getJPanel().setVisible(false); DrawRightanqleTrianqle.getJPanel().setVisible(false); DrawIsoscelesTrianqle.getJPanel().setVisible(false); DrawCircle.getJPanel().setVisi

47、ble(false); DrawEllipse.getJPanel().setVisible(false); DrawSolidCircle.getJPanel().setVisible(false); remoteControl.firstItemSelected(1); else if(String)trianqleBox.getSelectedItem().equals("直角三角形") nullJPanel.setVisible(false); DrawSquare.getJPanel().setVisible(false); DrawRectanqleLong.g

48、etJPanel().setVisible(false); DrawRectanqleHeight.getJPanel().setVisible(false); DrawTrianqle.getJPanel().setVisible(false); DrawRightanqleTrianqle.getJPanel().setVisible(false); DrawIsoscelesTrianqle.getJPanel().setVisible(false); DrawCircle.getJPanel().setVisible(false); DrawEllipse.getJPanel().se

49、tVisible(false); DrawSolidCircle.getJPanel().setVisible(false); remoteControl.secondItemSelected(1); else if(String)trianqleBox.getSelectedItem().equals("等腰三角形") nullJPanel.setVisible(false); DrawSquare.getJPanel().setVisible(false); DrawRectanqleLong.getJPanel().setVisible(false); DrawRec

50、tanqleHeight.getJPanel().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(false); remoteControl.thirdItemSelected(1); ); circleBox.addActionListener(new ActionListener() /事件处理 public void actionPerformed(Acti