mainframe.java

初学Java,好好学习

package chapter1;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class MainFrame extends JFrame {
	private Inventory inventory = new Inventory();

	private Invoice invoice = new Invoice(inventory);

	final JTextArea textArea_1 = new JTextArea(); //显示存货单的信息

	final JTextArea textArea_2 = new JTextArea(); //显示提货单的信息

	public static void main(String args[]) {
		MainFrame frame = new MainFrame();
		frame.setBounds(100, 100, 450, 300);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
	}

	public MainFrame() {
		super();
		setTitle("商品库存管理系统");
		final JTabbedPane tabbedPane = new JTabbedPane();
		final JPanel panel_1 = new JPanel();
		final JPanel panel_2 = new JPanel();
		final JScrollPane scrollPane_1 = new JScrollPane(textArea_1);
		final JScrollPane scrollPane_2 = new JScrollPane(textArea_2);
		final JTextField id_1 = new JTextField(4); //存货单某项的ID
		final JTextField number_1 = new JTextField(4); //欲修改的存货单某项的数量
		final JTextField id_2 = new JTextField(4); //提货单某项的ID
		final JTextField number_2 = new JTextField(4); //欲修改的提货单某项的数量
		final JPanel panelButton_1 = new JPanel();
		final JPanel panelButton_2 = new JPanel();
		final JPanel panelInput_1 = new JPanel();
		final JPanel panelInput_2 = new JPanel();
		final JButton inventoryAddButton = new JButton();
		final JButton inventoryRemoveButton = new JButton();
		final JButton invoiceAddButton = new JButton();
		final JButton invoiceDeleteButton = new JButton();

		getContentPane().add(tabbedPane, BorderLayout.CENTER);
		tabbedPane.add("存货单", panel_1);
		tabbedPane.add("提货单", panel_2);

		panel_1.setLayout(new BorderLayout());
		panel_1.add(scrollPane_1, BorderLayout.CENTER);
		panel_1.add(panelButton_1, BorderLayout.SOUTH);
		panel_1.add(panelInput_1, BorderLayout.NORTH);
		panelInput_1.add(new JLabel("存货单某项的ID："));
		panelInput_1.add(id_1);
		panelInput_1.add(new JLabel("商品数量："));
		panelInput_1.add(number_1);
		panelButton_1.add(inventoryAddButton);
		inventoryAddButton.setText("增加商品数量");
		panelButton_1.add(inventoryRemoveButton);
		inventoryRemoveButton.setText("减少商品数量");
		textArea_1.setEditable(false);
		scrollPane_1.setViewportView(textArea_1);

		panel_2.setLayout(new BorderLayout());
		panel_2.add(scrollPane_2, BorderLayout.CENTER);
		panel_2.add(panelButton_2, BorderLayout.SOUTH);
		panel_2.add(panelInput_2, BorderLayout.NORTH);
		panelInput_2.add(new JLabel("提货单某项的ID："));
		panelInput_2.add(id_2);
		panelInput_2.add(new JLabel("商品数量："));
		panelInput_2.add(number_2);
		panelButton_2.add(invoiceAddButton);
		invoiceAddButton.setText("增加提货单");
		panelButton_2.add(invoiceDeleteButton);
		invoiceDeleteButton.setText("删除提货单");
		textArea_2.setEditable(false);
		scrollPane_2.setViewportView(textArea_2);

		refreshInventory();
		refreshInvoice();

		inventoryAddButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				try {
					inventory.addUnits(id_1.getText(), Integer
							.parseInt(number_1.getText()));
				} catch (NumberFormatException e1) {
					JOptionPane.showMessageDialog(null, "输入的商品数量错误！", "警告",
							JOptionPane.ERROR_MESSAGE);
				}
				refreshInventory();
			}
		});

		inventoryRemoveButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				try {
					inventory.removeUnits(id_1.getText(), Integer
							.parseInt(number_1.getText()));
				} catch (NumberFormatException e1) {
					JOptionPane.showMessageDialog(null, "输入的商品数量错误！", "警告",
							JOptionPane.ERROR_MESSAGE);
				}
				refreshInventory();
			}
		});

		invoiceAddButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				try {
					invoice.addItem(id_2.getText(), Integer.parseInt(number_2
							.getText()));
				} catch (NumberFormatException e1) {
					JOptionPane.showMessageDialog(null, "输入的商品数量错误！", "警告",
							JOptionPane.ERROR_MESSAGE);
				}
				refreshInvoice();
				refreshInventory();
			}
		});

		invoiceDeleteButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				invoice.delItem(id_2.getText());
				refreshInvoice();
			}
		});
	}

	//刷新存货单的显示结果
	public void refreshInventory() {
		String str = null;
		for (int i = 0; i < inventory.list.length; i++) {
			str = inventory.toString() + "\n";
		}
		textArea_1.setText(str);
	}

	//刷新提货单的显示结果
	public void refreshInvoice() {
		String str = null;
		for (int i = 0; i < invoice.list.length; i++) {
			str = invoice.toString() + "\n";
		}
		textArea_2.setText(str);
	}
}