package gui.panel;

import javax.swing.JPanel;

public abstract class WorkingPanel  extends JPanel{
	public abstract void updateData();
	public abstract void addListener();
}

package gui.panel;

import java.awt.BorderLayout;

import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import entity.Category;
import gui.listener.CategoryListener;
import gui.model.CategoryTableModel;
import service.CategoryService;
import util.ColorUtil;
import util.GUIUtil;

public class CategoryPanel extends WorkingPanel {
	static {
		GUIUtil.useLNF();
	}

	public static CategoryPanel instance = new CategoryPanel();

	public JButton bAdd = new JButton("新增");
	public JButton bEdit = new JButton("编辑");
	public JButton bDelete = new JButton("删除");
	String columNames[] = new String[] { "分类名称", "消费次数" };

	public CategoryTableModel ctm = new CategoryTableModel();
	public JTable t = new JTable(ctm);

	public CategoryPanel() {
		GUIUtil.setColor(ColorUtil.blueColor, bAdd, bEdit, bDelete);
		JScrollPane sp = new JScrollPane(t);
		JPanel pSubmit = new JPanel();
		pSubmit.add(bAdd);
		pSubmit.add(bEdit);
		pSubmit.add(bDelete);

		this.setLayout(new BorderLayout());
		this.add(sp, BorderLayout.CENTER);
		this.add(pSubmit, BorderLayout.SOUTH);
		
		addListener();
	}

	public static void main(String[] args) {
		GUIUtil.showPanel(CategoryPanel.instance);
	}

	public Category getSelectedCategory() {
		int index = t.getSelectedRow();
		return ctm.cs.get(index);
	}
	
	public void updateData() {
		ctm.cs = new CategoryService().list();
		t.updateUI();
		t.getSelectionModel().setSelectionInterval(0, 0);
		
		if(0==ctm.cs.size()){
			bEdit.setEnabled(false);
			bDelete.setEnabled(false);
		}
		else{
			bEdit.setEnabled(true);
			bDelete.setEnabled(true);
		}
	}	
	
	public void addListener() {
		CategoryListener listener = new CategoryListener();
		bAdd.addActionListener(listener);
		bEdit.addActionListener(listener);
		bDelete.addActionListener(listener);
	}

}

package gui.panel;

import java.awt.BorderLayout;
import java.awt.GridLayout;

import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

import gui.listener.ConfigListener;
import service.ConfigService;
import util.ColorUtil;
import util.GUIUtil;

public class ConfigPanel extends WorkingPanel {
	static {
		GUIUtil.useLNF();
	}

	public static ConfigPanel instance = new ConfigPanel();

	JLabel lBudget = new JLabel("本月预算(￥)");
	public JTextField tfBudget = new JTextField("0");

	JLabel lMysql = new JLabel("Mysql安装目录");
	public JTextField tfMysqlPath = new JTextField("");

	JButton bSubmit = new JButton("更新");

	public ConfigPanel() {
		GUIUtil.setColor(ColorUtil.grayColor, lBudget, lMysql);
		GUIUtil.setColor(ColorUtil.blueColor, bSubmit);

		JPanel pInput = new JPanel();
		JPanel pSubmit = new JPanel();
		int gap = 40;
		pInput.setLayout(new GridLayout(4, 1, gap, gap));

		pInput.add(lBudget);
		pInput.add(tfBudget);
		pInput.add(lMysql);
		pInput.add(tfMysqlPath);

		pSubmit.add(bSubmit);

		this.setLayout(new BorderLayout());
		this.add(pInput, BorderLayout.NORTH);
		this.add(pSubmit, BorderLayout.CENTER);

		addListener();
	}

	public static void main(String[] args) {
		GUIUtil.showPanel(ConfigPanel.instance);
	}

	public void addListener() {
		ConfigListener l = new ConfigListener();
		bSubmit.addActionListener(l);
	}

	@Override
	public void updateData() {
		String budget = new ConfigService().get(ConfigService.budget);
		String mysqlPath = new ConfigService().get(ConfigService.mysqlPath);
		tfBudget.setText(budget);
		tfMysqlPath.setText(mysqlPath);
		tfBudget.grabFocus();
	}

}

package util;

import java.awt.Component;
import java.awt.Dimension;

import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;

import gui.panel.WorkingPanel;

public class CenterPanel extends JPanel {

	private double rate;// 拉伸比例
	private JComponent c; // 显示的组件
	private boolean strech; // 是否拉伸

	public CenterPanel(double rate, boolean strech) {
		this.setLayout(null);
		this.rate = rate;
		this.strech = strech;
	}

	public CenterPanel(double rate) {
		this(rate, true);
	}

	public void repaint() {
		if (null != c) {
			Dimension containerSize = this.getSize();
			Dimension componentSize = c.getPreferredSize();

			if (strech)
				c.setSize((int) (containerSize.width * rate), (int) (containerSize.height * rate));
			else
				c.setSize(componentSize);

			c.setLocation(containerSize.width / 2 - c.getSize().width / 2,
					containerSize.height / 2 - c.getSize().height / 2);
		}
		super.repaint();
	}

	public void show(JComponent p) {
		this.c = p;
		Component[] cs = getComponents();
		for (Component c : cs) {
			remove(c);
		}
		add(p);

		if (p instanceof WorkingPanel)
			((WorkingPanel) p).updateData();

		this.updateUI();
	}

	public static void main(String[] args) {
		JFrame f = new JFrame();
		f.setSize(200, 200);
		f.setLocationRelativeTo(null);
		CenterPanel cp = new CenterPanel(0.85, true);
		f.setContentPane(cp);
		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		f.setVisible(true);
		JButton b = new JButton("abc");
		cp.show(b);

	}

}