मैंने कुछ स्विंग और एसडब्ल्यूटी जीयूआई बनाया है। मुझे जो मिला है वह है कि एक जीयूआई के लिए अपने मॉडल - व्यू (एमवी) संरचना की आवश्यकता होती है। एप्लिकेशन नियंत्रक जीयूआई घटकों की बजाय जीयूआई मॉडल के साथ बातचीत करता है।
असल में, मैं अपने जीयूआई में प्रत्येक स्विंग जेपीनेल के लिए जावा बीन का निर्माण करता हूं। जीयूआई घटक जावा बीन के साथ बातचीत करते हैं, और एप्लिकेशन नियंत्रक जावा बीन के साथ इंटरैक्ट करता है।
यहां एक स्पाइरोग्राफ जीयूआई है जिसे मैंने बनाया है।
यहाँ जावा सेम कि spirograph मापदंडों का प्रबंधन करता है।
import java.awt.Color;
public class ControlModel {
protected boolean isAnimated;
protected int jpanelWidth;
protected int outerCircle;
protected int innerCircle;
protected int penLocation;
protected int penSize;
protected Color penColor;
protected Color backgroundColor;
public ControlModel() {
init();
this.penColor = Color.BLUE;
this.backgroundColor = Color.WHITE;
}
public void init() {
this.jpanelWidth = 512;
this.outerCircle = 1000;
this.innerCircle = 520;
this.penLocation = 400;
this.penSize = 2;
this.isAnimated = true;
}
public int getOuterCircle() {
return outerCircle;
}
public void setOuterCircle(int outerCircle) {
this.outerCircle = outerCircle;
}
public int getInnerCircle() {
return innerCircle;
}
public void setInnerCircle(int innerCircle) {
this.innerCircle = innerCircle;
}
public int getPenLocation() {
return penLocation;
}
public void setPenLocation(int penLocation) {
this.penLocation = penLocation;
}
public int getPenSize() {
return penSize;
}
public void setPenSize(int penSize) {
this.penSize = penSize;
}
public boolean isAnimated() {
return isAnimated;
}
public void setAnimated(boolean isAnimated) {
this.isAnimated = isAnimated;
}
public Color getPenColor() {
return penColor;
}
public void setPenColor(Color penColor) {
this.penColor = penColor;
}
public Color getBackgroundColor() {
return backgroundColor;
}
public void setBackgroundColor(Color backgroundColor) {
this.backgroundColor = backgroundColor;
}
public int getJpanelWidth() {
return jpanelWidth;
}
public int getJpanelHeight() {
return jpanelWidth;
}
}
संपादित नियंत्रण कक्ष वर्ग को जोड़ने के लिए।
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JColorChooser;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.JToggleButton;
import javax.swing.SwingConstants;
import com.ggl.spirograph.model.ControlModel;
public class ControlPanel {
protected static final Insets entryInsets = new Insets(0, 10, 4, 10);
protected static final Insets titleInsets = new Insets(0, 10, 20, 10);
protected ControlModel model;
protected DrawingPanel drawingPanel;
protected JButton drawButton;
protected JButton stopButton;
protected JButton resetButton;
protected JButton foregroundColorButton;
protected JButton backgroundColorButton;
protected JLabel message;
protected JPanel panel;
protected JTextField outerCircleField;
protected JTextField innerCircleField;
protected JTextField penLocationField;
protected JTextField penSizeField;
protected JTextField penFadeField;
protected JToggleButton animationToggleButton;
protected JToggleButton fastToggleButton;
protected static final int messageLength = 100;
protected String blankMessage;
public ControlPanel(ControlModel model) {
this.model = model;
this.blankMessage = createBlankMessage();
createPartControl();
setFieldValues();
setColorValues();
}
public void setDrawingPanel(DrawingPanel drawingPanel) {
this.drawingPanel = drawingPanel;
}
protected String createBlankMessage() {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < messageLength/4; i++) {
sb.append(" ");
}
return sb.toString();
}
protected void createPartControl() {
panel = new JPanel();
panel.setLayout(new GridBagLayout());
int gridy = 0;
JLabel title = new JLabel("Spirograph Parameters");
title.setHorizontalAlignment(SwingConstants.CENTER);
addComponent(panel, title, 0, gridy++, 4, 1, titleInsets,
GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL);
resetButton = new JButton("Reset Default Parameters");
resetButton.setHorizontalAlignment(SwingConstants.CENTER);
resetButton.addActionListener(new ResetButtonListener());
addComponent(panel, resetButton, 0, gridy++, 4, 1, entryInsets,
GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL);
JLabel outerCircleLabel = new JLabel("Outer circle radius:");
outerCircleLabel.setHorizontalAlignment(SwingConstants.LEFT);
addComponent(panel, outerCircleLabel, 0, gridy, 2, 1, entryInsets,
GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL);
outerCircleField = new JTextField(5);
outerCircleField.setHorizontalAlignment(SwingConstants.LEFT);
addComponent(panel, outerCircleField, 2, gridy++, 2, 1, entryInsets,
GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL);
JLabel innerCircleLabel = new JLabel("Inner circle radius:");
innerCircleLabel.setHorizontalAlignment(SwingConstants.LEFT);
addComponent(panel, innerCircleLabel, 0, gridy, 2, 1, entryInsets,
GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL);
innerCircleField = new JTextField(5);
innerCircleField.setHorizontalAlignment(SwingConstants.LEFT);
addComponent(panel, innerCircleField, 2, gridy++, 2, 1, entryInsets,
GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL);
JLabel penLocationLabel = new JLabel("Pen location radius:");
penLocationLabel.setHorizontalAlignment(SwingConstants.LEFT);
addComponent(panel, penLocationLabel, 0, gridy, 2, 1, entryInsets,
GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL);
penLocationField = new JTextField(5);
penLocationField.setHorizontalAlignment(SwingConstants.LEFT);
addComponent(panel, penLocationField, 2, gridy++, 2, 1, entryInsets,
GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL);
JLabel penSizeLabel = new JLabel("Pen size:");
penSizeLabel.setHorizontalAlignment(SwingConstants.LEFT);
addComponent(panel, penSizeLabel, 0, gridy, 2, 1, entryInsets,
GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL);
penSizeField = new JTextField(5);
penSizeField.setHorizontalAlignment(SwingConstants.LEFT);
addComponent(panel, penSizeField, 2, gridy++, 2, 1, entryInsets,
GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL);
message = new JLabel(blankMessage);
message.setForeground(Color.RED);
message.setHorizontalAlignment(SwingConstants.LEFT);
addComponent(panel, message, 0, gridy++, 4, 1, titleInsets,
GridBagConstraints.LINE_START, GridBagConstraints.HORIZONTAL);
title = new JLabel("Drawing Speed");
title.setHorizontalAlignment(SwingConstants.CENTER);
addComponent(panel, title, 0, gridy++, 4, 1, titleInsets,
GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL);
JPanel buttonPanel = new JPanel(new GridLayout(1, 2, 4, 0));
animationToggleButton = new JToggleButton("Animated");
animationToggleButton.setSelected(model.isAnimated());
animationToggleButton.setHorizontalAlignment(SwingConstants.CENTER);
animationToggleButton.addActionListener(new DrawingSpeedListener(
animationToggleButton));
buttonPanel.add(animationToggleButton);
fastToggleButton = new JToggleButton("Fast");
fastToggleButton.setSelected(!model.isAnimated());
fastToggleButton.setHorizontalAlignment(SwingConstants.CENTER);
fastToggleButton.addActionListener(new DrawingSpeedListener(
fastToggleButton));
buttonPanel.add(fastToggleButton);
addComponent(panel, buttonPanel, 0, gridy++, 4, 1, titleInsets,
GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL);
title = new JLabel("Drawing Colors");
title.setHorizontalAlignment(SwingConstants.CENTER);
addComponent(panel, title, 0, gridy++, 4, 1, titleInsets,
GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL);
buttonPanel = new JPanel(new GridLayout(1, 2, 4, 0));
foregroundColorButton = new JButton("Pen");
foregroundColorButton.setHorizontalAlignment(SwingConstants.CENTER);
foregroundColorButton.addActionListener(new ColorSelectListener(
foregroundColorButton));
buttonPanel.add(foregroundColorButton);
backgroundColorButton = new JButton("Paper");
backgroundColorButton.setHorizontalAlignment(SwingConstants.CENTER);
backgroundColorButton.addActionListener(new ColorSelectListener(
backgroundColorButton));
buttonPanel.add(backgroundColorButton);
addComponent(panel, buttonPanel, 0, gridy++, 4, 1, titleInsets,
GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL);
title = new JLabel("Drawing Controls");
title.setHorizontalAlignment(SwingConstants.CENTER);
addComponent(panel, title, 0, gridy++, 4, 1, titleInsets,
GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL);
buttonPanel = new JPanel(new GridLayout(1, 2, 4, 0));
drawButton = new JButton("Draw");
drawButton.setHorizontalAlignment(SwingConstants.CENTER);
drawButton.addActionListener(new DrawButtonListener());
buttonPanel.add(drawButton);
stopButton = new JButton("Stop");
stopButton.setHorizontalAlignment(SwingConstants.CENTER);
stopButton.addActionListener(new StopButtonListener());
buttonPanel.add(stopButton);
addComponent(panel, buttonPanel, 0, gridy++, 4, 1, titleInsets,
GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL);
}
protected void addComponent(Container container, Component component,
int gridx, int gridy, int gridwidth, int gridheight,
Insets insets, int anchor, int fill) {
GridBagConstraints gbc = new GridBagConstraints(gridx, gridy,
gridwidth, gridheight, 1.0, 1.0, anchor, fill, insets, 0, 0);
container.add(component, gbc);
}
protected void setFieldValues() {
outerCircleField.setText(Integer.toString(model.getOuterCircle()));
innerCircleField.setText(Integer.toString(model.getInnerCircle()));
penLocationField.setText(Integer.toString(model.getPenLocation()));
penSizeField.setText(Integer.toString(model.getPenSize()));
}
protected void setColorValues() {
foregroundColorButton.setForeground(model.getBackgroundColor());
foregroundColorButton.setBackground(model.getPenColor());
backgroundColorButton.setForeground(model.getPenColor());
backgroundColorButton.setBackground(model.getBackgroundColor());
}
public JPanel getPanel() {
return panel;
}
public class ResetButtonListener implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
model.init();
setFieldValues();
}
}
public class StopButtonListener implements ActionListener {
@Override
public void actionPerformed(ActionEvent arg0) {
drawingPanel.stop();
}
}
public class DrawButtonListener implements ActionListener {
@Override
public void actionPerformed(ActionEvent event) {
message.setText(blankMessage);
int ocTest = isNumeric(outerCircleField.getText());
int icTest = isNumeric(innerCircleField.getText());
int plTest = isNumeric(penLocationField.getText());
int psTest = isNumeric(penSizeField.getText());
boolean isInvalid = false;
if (psTest < 0) {
message.setText("Pen size is not a valid integer");
isInvalid = true;
}
if (plTest < 0) {
message.setText("Pen location radius is not a valid integer");
isInvalid = true;
}
if (icTest < 0) {
message.setText("Inner circle radius is not a valid integer");
isInvalid = true;
}
if (ocTest < 0) {
message.setText("Outer circle radius is not a valid integer");
isInvalid = true;
}
if (isInvalid) {
return;
}
if (ocTest > 1000) {
message.setText("The outer circle cannot be larger than 1000");
isInvalid = true;
}
if (ocTest <= icTest) {
message.setText("The inner circle must be smaller than the outer circle");
isInvalid = true;
}
if (icTest <= plTest) {
message.setText("The pen location must be smaller than the inner circle");
isInvalid = true;
}
if (isInvalid) {
return;
}
model.setOuterCircle(ocTest);
model.setInnerCircle(icTest);
model.setPenLocation(plTest);
model.setPenSize(psTest);
drawingPanel.draw(model.isAnimated());
}
protected int isNumeric(String field) {
try {
return Integer.parseInt(field);
} catch (NumberFormatException e) {
return Integer.MIN_VALUE;
}
}
}
public class DrawingSpeedListener implements ActionListener {
JToggleButton selectedButton;
public DrawingSpeedListener(JToggleButton selectedButton) {
this.selectedButton = selectedButton;
}
@Override
public void actionPerformed(ActionEvent arg0) {
if (selectedButton.equals(animationToggleButton)) {
model.setAnimated(true);
} else {
model.setAnimated(false);
}
animationToggleButton.setSelected(model.isAnimated());
fastToggleButton.setSelected(!model.isAnimated());
}
}
public class ColorSelectListener implements ActionListener {
JButton selectedButton;
public ColorSelectListener(JButton selectedButton) {
this.selectedButton = selectedButton;
}
@Override
public void actionPerformed(ActionEvent arg0) {
if (selectedButton.equals(foregroundColorButton)) {
Color initialColor = model.getPenColor();
Color selectedColor = JColorChooser.showDialog(drawingPanel,
"Select pen color", initialColor);
if (selectedColor != null) {
model.setPenColor(selectedColor);
}
} else if (selectedButton.equals(backgroundColorButton)) {
Color initialColor = model.getBackgroundColor();
Color selectedColor = JColorChooser.showDialog(drawingPanel,
"Select paper color", initialColor);
if (selectedColor != null) {
model.setBackgroundColor(selectedColor);
}
}
setColorValues();
}
}
}
भी देखें इस [उदाहरण] (http://stackoverflow.com/a/3072979/230513) या इस [उदाहरण] (http://stackoverflow.com/a/8534162/230513), दोनों में से किसी जो आपके [एसएससीएस] (http://sscce.org/) को सूचित कर सकता है। – trashgod
आप एमवीपी (मॉडल-व्यू-प्रेजेंटर) भी देखना चाहते हैं, उदा। [इस प्रस्तुति] में [http://www.jgoodies.com/download/presentations/patterns-and-binding.pdf) – Robin