import java.awt.*; import java.applet.*; class OrderEntryFrameType extends Frame { public static void main(String[] arg) { Image AnImage; OrderEntryFrameType BFrame = new OrderEntryFrameType("Order Entry Test App"); AnImage = Toolkit.getDefaultToolkit().getImage("Spalding.gif"); // Resize the BFrame to width of 300 pixels, // And a height of 250 pixels. BFrame.resize(430, 500); BFrame.setup(AnImage); // Display the BFrame. BFrame.show(); } OrderEntryFrameType (String InTitle) { // Call the Frame constructor . . super(InTitle); // Set the background color for the Applet frame. . setBackground(Color.white); } WarningDialog WDialog = new WarningDialog(this,"You have not entered a name. "); Panel Pan = new Panel(); public void setup(Image LogoImage) { // Set the initial grid bag layout for the frame. GridBagLayout PrimaryLayout = new GridBagLayout(); setLayout(PrimaryLayout); // Declare the constraints for the Logo. GridBagConstraints LogoConstraints = new GridBagConstraints(); // Construct the new canvas. . LogoCanvas Logo = new LogoCanvas(LogoImage); LogoConstraints.gridwidth = GridBagConstraints.REMAINDER; // Set the constraints for the LogoImage. PrimaryLayout.setConstraints(Logo, LogoConstraints); // Add the logo canvas to the applet face. add(Logo); // Declare the constraints for the Logo. GridBagConstraints HBarConstraints = new GridBagConstraints(); // Construct the new canvas. . HorizBar ProdBar = new HorizBar("Product", 425); // Say that we want the logo to be the last thing on the line. HBarConstraints.gridwidth = GridBagConstraints.REMAINDER; // Set the constraints for the LogoImage. PrimaryLayout.setConstraints(ProdBar, HBarConstraints); // Add the logo canvas to the applet face. add(ProdBar); // Declare and initialize the product panel. Panel ProductPanel = new Panel(); // Set the layout for the product panel and set the constraints for // the components inside of the product panel. GridBagLayout ProductPanelLayout = new GridBagLayout(); GridBagConstraints InProductPanelConstraints = new GridBagConstraints(); ProductPanel.setLayout(ProductPanelLayout); // Here we will set the list panel, which will hold the // list choice method and insertion. Panel ListPanel = new Panel(); ListPanel.setLayout(new BorderLayout()); Label ProductLabel = new Label("Products"); ListPanel.add("North", ProductLabel); // Create the list, 4 items visible, no multiple // selections. ProductList = new List(4, false); // AddItems to the List. ProductList.addItem("Oscar"); ProductList.addItem("Lionhead"); ProductList.addItem("Jack Dempsey"); ProductList.addItem("Angelfish"); // Add the List to the list panel. ListPanel.add("Center",ProductList); // Add the imbedded panel to the product panel. InProductPanelConstraints.anchor = GridBagConstraints.NORTH; ProductPanelLayout.setConstraints(ListPanel, InProductPanelConstraints); ProductPanel.add(ListPanel); // Another panel which will be imbedded in the product panel. Panel SizePanel = new Panel(); SizePanel.setLayout(new BorderLayout()); // Add a label to the choice of sizes. SizePanel.add("North", new Label("Size:")); // Create the Choice box. SizeChoice = new Choice(); // AddItems to the List. SizeChoice.addItem("Jumbo"); SizeChoice.addItem("Large"); SizeChoice.addItem("Medium"); SizeChoice.addItem("Small"); // Add the Choice to the Applet panel. SizePanel.add("Center",SizeChoice); // Add the imbedded panel to the product panel. ProductPanelLayout.setConstraints(SizePanel, InProductPanelConstraints); ProductPanel.add(SizePanel); // Another panel that will be imbedded in the product panel. Panel AmountPanel = new Panel(); AmountPanel.setLayout(new BorderLayout()); // Add a label to the slider. AmountPanel.add("North", new Label("Amount:")); // Another imbedded panel that will contain the slider and the output label. Panel SliderPanel = new Panel(); SliderPanel.setLayout(new FlowLayout()); // Insert the label that says how many are to be ordered // of the item. SliderPanel.add(AmountLabel); // Create a vertical slider, initial value of 0, // minimum value of 0, maximum value of 144. OrderAmountSlider = new Scrollbar(Scrollbar.HORIZONTAL, 0, 0, 0, 144); // Insert the slider to the Applet panel. SliderPanel.add(OrderAmountSlider); AmountPanel.add("Center", SliderPanel); // Add the imbedded panel to the product panel. ProductPanelLayout.setConstraints(AmountPanel, InProductPanelConstraints); ProductPanel.add(AmountPanel); // The last panel that will be imbedded in the product panel. Panel TotalPanel = new Panel(); TotalPanel.setLayout(new BorderLayout()); // Add the subtotal label and a label saying that it is the subtotal. TotalPanel.add("North", new Label("Total: ")); TotalPanel.add("South",TotalLabel); ProductPanelLayout.setConstraints(TotalPanel, InProductPanelConstraints); ProductPanel.add(TotalPanel); // Add the imbedded panel to the product panel. ProductPanelLayout.setConstraints(TotalPanel, InProductPanelConstraints); ProductPanel.add(TotalPanel); // Set the constraints for the product panel, which will contain product choices, size, etc. GridBagConstraints ProductPanelConstraints = new GridBagConstraints(); // The product panel will take up the rest of the space on this line. ProductPanelConstraints.gridwidth = GridBagConstraints.REMAINDER; // Set the constraints for the product panel's insertion. PrimaryLayout.setConstraints(ProductPanel, ProductPanelConstraints); // Add the product panel to the frame. add(ProductPanel); // Construct the new canvas. . HorizBar InfoBar = new HorizBar("Your Information", 425); // Say that we want the logo to be the last thing on the line. HBarConstraints.gridwidth = GridBagConstraints.REMAINDER; // Set the constraints for the LogoImage. PrimaryLayout.setConstraints(InfoBar, HBarConstraints); // Add the logo canvas to the applet face. add(InfoBar); // The second panel to be imbedded in the frame is the info panel. // This panel gets the information about the user. GridBagLayout InfoPanelLayout = new GridBagLayout(); Panel InfoPanel = new Panel(); GridBagConstraints InfoPanelConstraints = new GridBagConstraints(); InfoPanelConstraints.gridwidth = GridBagConstraints.RELATIVE; InfoPanel.setLayout(InfoPanelLayout); GridBagConstraints InInfoConstraints = new GridBagConstraints(); InInfoConstraints.gridwidth = GridBagConstraints.REMAINDER; InInfoConstraints.anchor = GridBagConstraints.WEST; Label InfoLabel = new Label("Your information: "); InfoPanelLayout.setConstraints(InfoLabel, InInfoConstraints); InfoPanel.add(InfoLabel); // The name entry field area. Panel NameFieldPanel = new Panel(); NameFieldPanel.setLayout(new BorderLayout()); NameFieldPanel.add("West",new Label("Name:")); NameFieldPanel.add("East",NameEntryField); InInfoConstraints.anchor = GridBagConstraints.EAST; InfoPanelLayout.setConstraints(NameFieldPanel, InInfoConstraints); InfoPanel.add(NameFieldPanel); // The Street entry area implementation. Panel StreetFieldPanel = new Panel(); StreetFieldPanel.setLayout(new BorderLayout()); StreetFieldPanel.add("West",new Label("Street:")); StreetFieldPanel.add("East",StreetEntryField); InfoPanelLayout.setConstraints(StreetFieldPanel, InInfoConstraints); InfoPanel.add(StreetFieldPanel); Panel CityFieldPanel = new Panel(); CityFieldPanel.setLayout(new BorderLayout()); CityFieldPanel.add("West",new Label("City:")); CityFieldPanel.add("East",CityEntryField); InfoPanelLayout.setConstraints(CityFieldPanel, InInfoConstraints); InfoPanel.add(CityFieldPanel); // The zip entry field implementation. Panel ZipFieldPanel = new Panel(); ZipFieldPanel.setLayout(new BorderLayout()); ZipFieldPanel.add("West",new Label("Zip:")); ZipFieldPanel.add("East",ZipEntryField); InfoPanelLayout.setConstraints(ZipFieldPanel, InInfoConstraints); InfoPanel.add(ZipFieldPanel); PrimaryLayout.setConstraints(InfoPanel, InfoPanelConstraints); // Add the info panel to the frame layout. add(InfoPanel); Panel CommentPanel = new Panel(); GridBagLayout CommentPanelLayout = new GridBagLayout(); GridBagConstraints CommentPanelConstraints = new GridBagConstraints(); CommentPanelConstraints.gridwidth = GridBagConstraints.REMAINDER; CommentPanel.setLayout(CommentPanelLayout); GridBagConstraints InCommentConstraints = new GridBagConstraints(); // The comment label. InCommentConstraints.anchor = GridBagConstraints.WEST; InCommentConstraints.gridwidth = GridBagConstraints.REMAINDER; Label CommentLabel = new Label("Comments: "); CommentPanelLayout.setConstraints(CommentLabel, InCommentConstraints); CommentPanel.add(CommentLabel); // Add the comment box. InCommentConstraints.anchor = GridBagConstraints.CENTER; InCommentConstraints.gridwidth = GridBagConstraints.REMAINDER; CommentPanelLayout.setConstraints(CommentTextArea, InCommentConstraints); CommentPanel.add(CommentTextArea); PrimaryLayout.setConstraints(CommentPanel, CommentPanelConstraints); // Add the info panel to the frame layout. add(CommentPanel); // Add and create the repeat customer checkbox. Panel ContactPanel = new Panel(); ContactPanel.setLayout(new BorderLayout()); // Add a label to the ContactMethodGroup. ContactPanel.add("North",new Label("How would you like to be contacted? ")); // Declare the checkbox group, and allocate space. CheckboxGroup ContactMethodGroup; ContactMethodGroup = new CheckboxGroup(); // Create some checkboxes to put in the group. Checkbox EmailBox = new Checkbox("Email",ContactMethodGroup,true); Checkbox PhoneBox = new Checkbox("Phone",ContactMethodGroup,false); Checkbox MailBox = new Checkbox("US Mail",ContactMethodGroup,false); // Add the checkboxes into the applet panel. ContactPanel.add("West",EmailBox); ContactPanel.add("Center",PhoneBox); ContactPanel.add("East",MailBox); // Sets the constraints for the contact panel. GridBagConstraints ContactPanelConstraints = new GridBagConstraints(); ContactPanelConstraints.gridwidth = 2; ContactPanelConstraints.weightx = 2.0; PrimaryLayout.setConstraints(ContactPanel, ContactPanelConstraints); add(ContactPanel); // Insert the different checkboxes into the panel. GridBagConstraints CustCheckBoxConstraints = new GridBagConstraints(); CustCheckBoxConstraints.weightx =1.0; CustCheckBoxConstraints.gridwidth = GridBagConstraints.REMAINDER; Checkbox RepeatCustCheckBox = new Checkbox("Repeat Customer?"); PrimaryLayout.setConstraints(RepeatCustCheckBox, CustCheckBoxConstraints); add(RepeatCustCheckBox); // Construct the new canvas. . HorizBar ButtonBar = new HorizBar("Commands", 425); // Set the constraints for the logoin applet. PrimaryLayout.setConstraints(ButtonBar, HBarConstraints); // Add the logo canvas to the applet face. add(ButtonBar); GridBagConstraints ButtonConstraints = new GridBagConstraints(); ButtonConstraints.gridx = GridBagConstraints.RELATIVE; // Spreads the buttons out across the window. ButtonConstraints.weightx = 1.0; ButtonConstraints.weighty = 1.0; // Declare, set, and add the "Submit" button. SubmitButton = new Button("Submit"); PrimaryLayout.setConstraints(SubmitButton, ButtonConstraints); add(SubmitButton); // Declare, set, and add the "Clear" button. ClearButton = new Button("Clear"); PrimaryLayout.setConstraints(ClearButton, ButtonConstraints); add(ClearButton); // Set the constraints and insert the quit button. This button // due to the REMAINDER setting will be the last on the line. GridBagConstraints LastButtonConstraints = new GridBagConstraints(); LastButtonConstraints.gridwidth = GridBagConstraints.REMAINDER; QuitButton = new Button("Quit"); PrimaryLayout.setConstraints(QuitButton, LastButtonConstraints); add(QuitButton); // Method that resets all of the internal values. resetValues(); } // The subtotal and total variables. private double SubTotalOne = 0.0; private double Total = 0.0; // The price multipliers for each different product size. private double multiplierSmall = 0.5; private double multiplierMedium = 1.0; private double multiplierLarge = 1.5; private double multiplierJumbo = 2.25; // The local constant base prices. static double ProdOneBaseValue = 1.0; static double ProdTwoBaseValue = 1.33; static double ProdThreeBaseValue = 1.75; static double ProdFourBaseValue = 8.75; // Declare all of the variables we'll use. private Button SubmitButton; private Button ClearButton; private Button QuitButton; private Checkbox RepeatCustCheckBox; private Checkbox MailBox; private Checkbox EmailBox; private Checkbox PhoneBox; private List ProductList; private Choice SizeChoice; private Scrollbar OrderAmountSlider; // The labels that will be variable and change when // the other selections are changed. private Label SubTotalLabel = new Label("$0.0 "); private Label TotalLabel = new Label("$0.0 "); private Label AmountLabel = new Label("0 "); private Label PricePerItemLabel = new Label("$0.0 "); // The entry field for the user to enter his name. private TextField NameEntryField = new TextField(25); private TextField ZipEntryField = new TextField(6); private TextField StreetEntryField = new TextField(25); private TextField CityEntryField = new TextField(25); // The comment entry area. private TextArea CommentTextArea = new TextArea(4, 25); // Our own exception . . private Exception ZeroValueException; private void updateValues() throws Exception { int WhichChoice = SizeChoice.getSelectedIndex(); int AmountSelected = OrderAmountSlider.getValue(); int WhichProduct = ProductList.getSelectedIndex(); double CurrentBasePrice = 0.0; double CurrentModifier = 0.0; if (AmountSelected == 0) { throw(ZeroValueException); } switch (WhichProduct) { case 0: CurrentBasePrice = ProdOneBaseValue; break; case 1: CurrentBasePrice = ProdTwoBaseValue; break; case 2: CurrentBasePrice = ProdThreeBaseValue; break; case 3: CurrentBasePrice = ProdFourBaseValue; break; } switch (WhichChoice) { case 3: CurrentModifier = multiplierSmall; break; case 2: CurrentModifier = multiplierMedium; break; case 1: CurrentModifier = multiplierLarge; break; case 0: CurrentModifier = multiplierJumbo; break; } AmountLabel.setText(Integer.toString(AmountSelected)+ " "); double PricePerItem = (CurrentBasePrice*CurrentModifier); PricePerItemLabel.setText(Double.toString(PricePerItem)+ " "); double SubTotal = (CurrentBasePrice*CurrentModifier*AmountSelected); SubTotalLabel.setText(Double.toString(SubTotal)+ " "); TotalLabel.setText(SubTotalLabel.getText()); } // This method will be called when the user presses the "Clear" button and // also when the applet is initialized in the init() method. public void resetValues() { // Reset all of these labels to zero. SubTotalLabel.setText("$0.0 "); TotalLabel.setText("$0.0 "); AmountLabel.setText("0 "); PricePerItemLabel.setText("$0.0 "); // Clear all of the lists and choices. ProductList.select(0); SizeChoice.select(0); OrderAmountSlider.setValue(0); // Clear all of the text fields. NameEntryField.setText(""); StreetEntryField.setText(""); CityEntryField.setText(""); ZipEntryField.setText(""); } public boolean handleEvent(Event InEvent) { if (InEvent.id == Event.SCROLL_LINE_UP || InEvent.id == Event.SCROLL_LINE_DOWN) { try { updateValues(); } catch (Exception e) {} } else if (InEvent.target == ProductList) { try { updateValues(); } catch (Exception e) {} } else if (InEvent.target == ClearButton) { resetValues(); } else if (InEvent.target == QuitButton) { // Quit the applet. this.dispose(); } else if (InEvent.target == SubmitButton) { // Submit the order. } return super.handleEvent(InEvent); } public boolean action (Event InEvent, Object SomeObject) { if (InEvent.target == SizeChoice) { try { updateValues(); } catch (Exception e) {} return true; } else if (InEvent.target == NameEntryField) { // Is the field empty? If so, you could add a // pop-up dialog box to alert the user that he // has not entered his name. WDialog.show(); return true; } else return false; } } class WarningDialog extends Dialog { private Button OkButton = new Button("OK"); private Label ALabel; WarningDialog(Frame HostFrame, String Message) { super(HostFrame, "Warning!", false); ALabel = new Label(Message); resize(180,100); setLayout(new FlowLayout()); add(ALabel); add(OkButton); } public boolean action (Event InEvent, Object Param) { if (InEvent.target == OkButton) { hide(); } return true; } } class LogoCanvas extends Canvas { private Image LogoImage; LogoCanvas (Image LogoInCanvas) { // Get the image and place it in LogoImage. . LogoImage = LogoInCanvas; // Resize the canvas to fit the Logo exactly. resize (425, 87); } public void paint(Graphics g) { // Draw the logo on the canvas. g.drawImage(LogoImage,0,0,this); } } class HorizBar extends Canvas { private String LineString; private int Width; HorizBar(String InString, int InWidth) { // Set the size of the canvas. resize(InWidth, 25); // Set the local variables equal to parameters so that // we can use the values in the paint method. Width = InWidth; LineString = InString; } public void paint(Graphics g) { // Set the font and font metrics class. Font f = new Font("TimesRoman", Font.BOLD, 16); FontMetrics FM = getFontMetrics(f); g.setFont(f); // Draw a line from x = 0 to x = 15. g.drawLine(0, 20, 15, 20); // Draw the string. g.drawString(LineString, 20, 20); // Draw the rest of the line. g.drawLine(FM.stringWidth(LineString) + 25, 20, Width, 20); } }