How to add internal frame to menu
i have a GUI that has 3 menus:Read Files, Add, Finish. under the Add menu specifically, i have 3 menu items called add owner, add residential property and add commercial property. when clicking any of these menu items i have an internal frame come up but i do not want the internal frame to be the same for all menu items. i am trying to add a few more text fields for commercial and residential property compared to owner. so i do not qant the internal frame to be the same but unique for each menu item and that is where i am having trouble. here is the code
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
public class PropertyGUITest
{
public static void main(String[] args)
{
PropertyGUI obj = new PropertyGUI();
obj.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
obj.setSize(400,300);
obj.setVisible(true);
obj.setLocation(100,50);
}
}
class PropertyGUI extends JFrame
{
private int countFrames = 0;
public PropertyGUI()
{
super("Property GUI");
JMenuBar bar = new JMenuBar();
setJMenuBar(bar);
JMenu readMenu = new JMenu("Read Files");
bar.add(readMenu);
JMenu addMenu = new JMenu("Add");
bar.add(addMenu);
JMenuItem newFrame1=new JMenuItem("Add Owner");
addMenu.add(newFrame1);
JMenuItem newFrame2=new JMenuItem("Add Residential Property");
addMenu.add(newFrame2);
JMenuItem newFrame3=new JMenuItem("Add Commercial Property");
addMenu.add(newFrame3);
JMenu finishMenu = new JMenu("Finish");
bar.add(finishMenu);
JDesktopPane theDesktop = new JDesktopPane();
add(theDesktop);
JMenuItem writeItem = new JMenuItem("Write Owners");
finishMenu.add(writeItem);
JMenuItem readpItem = new JMenuItem("Read Properties");
readMenu.add(readpItem);
JMenuItem readoItem = new JMenuItem("Read Owners");
readMenu.add(readoItem);
JMenuItem exitItem = new JMenuItem("Exit");
exitItem.addActionListener(
new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
//System.exit(0);
dispose();
}
}
);
finishMenu.add(exitItem);
newFrame1.addActionListener(
new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
countFrames++;
JInternalFrame jf = new JInternalFrame("Add Owner",true,true,true,true);
theDesktop.add(jf);
jf.setVisible(true);
jf.pack();
jf.setSize(300,200);
jf.setLocation(countFrames*10,countFrames*20);
CustomPanel panel1 = new CustomPanel();
jf.add(panel1);
}
}
);
newFrame2.addActionListener(
new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
countFrames++;
JInternalFrame jf = new JInternalFrame("Add Residential Property",true,true,true,true);
theDesktop.add(jf);
jf.setVisible(true);
jf.pack();
jf.setSize(300,200);
jf.setLocation(countFrames*10,countFrames*20);
CustomPanel panel2 = new CustomPanel();
jf.add(panel2);
}
}
);
newFrame3.addActionListener(
new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
countFrames++;
JInternalFrame jf = new JInternalFrame("Add Commercial Property",true,true,true,true);
theDesktop.add(jf);
jf.setVisible(true);
jf.pack();
jf.setSize(300,200);
jf.setLocation(countFrames*10,countFrames*20);
CustomPanel panel3 = new CustomPanel();
jf.add(panel3);
}
}
);
}
class CustomPanel extends JPanel
{
JTextField tf1;
JTextField tf2;
JTextField tf3;
JTextField tf4;
JTextField tf5;
JLabel label1;
JLabel label2;
JLabel label3;
JLabel label4;
JLabel label5;
JLabel label6;
JButton button1;
public CustomPanel()
{
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.anchor = GridBagConstraints.WEST;
gbc.insets = new Insets(2, 2, 2, 2);
add(new JLabel("Name"), gbc);
gbc.gridy++;
add(new JLabel("Street"), gbc);
gbc.gridy++;
add(new JLabel("City"), gbc);
gbc.gridy++;
add(new JLabel("State"), gbc);
gbc.gridy++;
add(new JLabel("Zip"), gbc);
gbc.gridy++;
add(new JLabel("Submit when done"), gbc);
JTextField[] fields = new JTextField[5];
gbc.gridx = 1;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.fill = GridBagConstraints.HORIZONTAL;
add((fields[0] = new JTextField(10)), gbc);
gbc.gridy++;
add((fields[1] = new JTextField(10)), gbc);
gbc.gridy++;
add((fields[2] = new JTextField(10)), gbc);
gbc.gridy++;
add((fields[3] = new JTextField(10)), gbc);
gbc.gridy++;
add((fields[4] = new JTextField(10)), gbc);
gbc.gridy++;
JButton btn = new JButton("Submit");
add(btn, gbc);
}
}
}
for commercial and residential property i just want to add two more text fields for account number and price before the submit button.
3 个答案:
答案 0 :(得分：1)
i do not qant the internal frame to be the same but unique for each menu item and that is where i am having trouble.
CustomPanel panel1 = new CustomPanel();
...
CustomPanel panel2 = new CustomPanel();
...
CustomPanel panel3 = new CustomPanel();
Then you can't use the same panel.
You need 3 different panels. You need:
"OwnerPanel"
"ResidentialPanel"
"CommercialPanel"
Don't try to for the internal frames to use the same panel if the data is different for each panel.
//CustomPanel panel1 = new CustomPanel();
OwnerPanel panel1 = new OwnerPanel();
...
//CustomPanel panel2 = new CustomPanel();
ResidentialPanel panel2 = new ResidentialPanel();
...
//CustomPanel panel3 = new CustomPanel();
CommercialPanel panel3 = new CommercialPanel();
答案 1 :(得分：1)
因此，根据您的代码，每个菜单项都会创建相同的组件并将其添加到新的JInternalFrame，这显然不是您想要的，而是您希望每个菜单项都创建它根据需要自己观点。
有几种方法可以实现这一点，但由于所有这些方法的基本机制相同，因此您可以减少需要执行的复制粘贴操作的数量。
首先，首先定义您需要的实际视图/组件
public class AddOwnerPane extends JPanel {
//...
}
public class AddResidentialPropertyPane extends JPanel {
//...
}
public class AddCommercialPropertyPane extends JPanel {
//...
}
我试图确定是否有任何可以在视图之间共享的公共属性，但是无法确定，但如果可以，您可以从其他视图中继承或定义“常见的“视图可以添加到其他视图中，以进一步减少代码重复。
当谈到这类问题时，你有两个基本的选择，你可以使用继承，你可以定义一个基类，其他所有人都可以从中扩展...
或作文......
“共同”部分（实际上）是一个独立的类，但是你在另一个类中使用它。
在GUI中使用继承是棘手的，因为你需要处理布局（特别是）。这是有问题的，因为基础类布局可能具有非常特定的要求，如果搞砸了，则很快就会崩溃，使得添加新组件变得困难。基类可能也有自己定义的生命周期和管理期望，这也会使你的新需求变得棘手
在这些情况下，我通常会发现易于设计和管理的作品。
关于这个问题有很多讨论，例如：
- Composition versus Inheritance
- Composition and Inheritance
- What is Composition in Java? Java Composition Example
- Difference between Inheritance and Composition
- Java 101: Object-oriented language basics, Part 3: Composition
- Inheritance versus composition: Which one should you choose?
因此，丢失有关该主题的信息，我将继续研究它
接下来，我们需要定义一个共同的动作，它可以完成大部分繁重的工作
public class ViewAction extends AbstractAction {
private JDesktopPane desktop;
private Class<? extends JComponent> view;
public ViewAction(JDesktopPane desktop, Class<? extends JComponent> view) {
this.desktop = desktop;
this.view = view;
}
@Override
public void actionPerformed(ActionEvent e) {
try {
countFrames++;
JInternalFrame jf = new JInternalFrame("Add Owner", true, true, true, true);
JComponent viewComponent = view.newInstance();
jf.add(viewComponent);
jf.pack();
jf.setLocation(countFrames * 10, countFrames * 20);
jf.setVisible(true);
desktop.add(jf);
} catch (InstantiationException | IllegalAccessException ex) {
ex.printStackTrace();
}
}
}
这是基本Action，在触发时会创建JInternalFrame，初始化指定视图的新实例，将其添加到JInternalFrame并添加JInternalFrame到桌面窗格。
稍微不同的方法可能会让这个类成为abstract类，其abstract方法称为getViewComponent，它负责创建实际组件而不是Class#newInstance 1}}，但是什么对你有用。
接下来，我们定义生成我们想要的视图所需的Action
public class AddOwnerAction extends ViewAction {
public AddOwnerAction(JDesktopPane desktopPane) {
super(desktopPane, AddOwnerPane.class);
putValue(NAME, "Add Owner");
}
}
public class AddResidentialPropertyAction extends ViewAction {
public AddResidentialPropertyAction(JDesktopPane desktopPane) {
super(desktopPane, AddResidentialPropertyPane.class);
putValue(NAME, "Add Residential Property");
}
}
public class AddCommercialPropertyAction extends ViewAction {
public AddCommercialPropertyAction(JDesktopPane desktopPane) {
super(desktopPane, AddCommercialPropertyPane.class);
putValue(NAME, "Add Commercial Property");
}
}
这些Action中的每一个都从ViewAction延伸，只是提供Class将创建并在其中设置各个属性的视图组件所需的Action引用。
最后，我们为每个动作创建JMenuItem ...
addMenu.add(new JMenuItem(new AddOwnerAction(theDesktop)));
addMenu.add(new JMenuItem(new AddResidentialPropertyAction(theDesktop)));
addMenu.add(new JMenuItem(new AddCommercialPropertyAction(theDesktop)));
基本上，我们定义了一系列自包含的工作单元，这减少了为每个操作添加不同视图组件所需的代码重复数量
有关详细信息，请查看How to Use Actions
答案 2 :(得分：0)
Since the panel for customer and residental property share the some common components, you can add a subclass of CustomerPanel for commercial and residential properties.
This requires some refactoring of the CustomerPanel so that most of its code is reusable. For example, a setUpBaseLayout() to add the common components, a setUpCustomizedLayout() to add the additional components that commercial and residential Panel can extend, a setUpSubmitButton() which comes after the first two methods to add the submit button.
class CustomPanel extends JPanel {
JTextField tf1;
JTextField tf2;
JTextField tf3;
JTextField tf4;
JTextField tf5;
JLabel label1;
JLabel label2;
JLabel label3;
JLabel label4;
JLabel label5;
JLabel label6;
JButton button1;
GridBagConstraints gbc = new GridBagConstraints();
public void setUpBaseLayout() {
setLayout(new GridBagLayout());
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.anchor = GridBagConstraints.WEST;
gbc.insets = new Insets(2, 2, 2, 2);
add(new JLabel("Name"), gbc);
gbc.gridy++;
add(new JLabel("Street"), gbc);
gbc.gridy++;
add(new JLabel("City"), gbc);
gbc.gridy++;
add(new JLabel("State"), gbc);
gbc.gridy++;
add(new JLabel("Zip"), gbc);
JTextField[] fields = new JTextField[5];
gbc.gridx = 1;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.fill = GridBagConstraints.HORIZONTAL;
add((fields[0] = new JTextField(10)), gbc);
gbc.gridy++;
add((fields[1] = new JTextField(10)), gbc);
gbc.gridy++;
add((fields[2] = new JTextField(10)), gbc);
gbc.gridy++;
add((fields[3] = new JTextField(10)), gbc);
gbc.gridy++;
add((fields[4] = new JTextField(10)), gbc);
}
public void setUpCustomizedLayout() {
}
public CustomPanel() {
setUpBaseLayout();
setUpCustomizedLayout();
setUpSubmitButton();
}
private void setUpSubmitButton() {
gbc.gridx = 0;
gbc.gridy++;
add(new JLabel("Submit when done"), gbc);
gbc.gridx = 1;
JButton btn = new JButton("Submit");
add(btn, gbc);
}
}
class ResidentialPanel extends CustomPanel {
ResidentialPanel() {
super();
}
public void setUpCustomizedLayout() {
gbc.gridx = 0;
gbc.gridy++;
add(new JLabel("Account Number"), gbc);
gbc.gridy++;
add(new JLabel("Price"), gbc);
gbc.gridx = 1;
gbc.gridy--;
add(new JTextField(10), gbc);
gbc.gridy++;
add(new JTextField(10), gbc);
}
}
So for residential frame, you can use:
CustomPanel panel2 = new ResidentialPanel();
jf.add(panel2);
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