Random String Maker 隨機數生成器 Java GUI 重寫版

/*
 * Author : Zeuxis Lo (傻心 - 窮等人家)
 * P-Name : Random String Maker (GUI)
 * P-Date : 28/9/2008 19:26 PM
 * Version: 0.0.1.9.28 Beta
 * WebSite: http://skhk.uni.cc/
 */

import java.net.URI;

import java.awt.Container;
import java.awt.event.KeyListener;
import java.awt.event.KeyEvent;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseEvent;
import java.awt.Desktop;

import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JPanel;
import javax.swing.BorderFactory;
import javax.swing.JOptionPane;

import java.awt.Toolkit;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.ClipboardOwner;
import java.awt.datatransfer.Transferable;

class RandomMaker {
	public static void main(String args[]) {
		new RandomMakerUI().setVisible(true);
	}
}

class RandomMakerUI extends JFrame {
	Container c = getContentPane();
	JTextField txtRandomString = new JTextField();
	JLabel lbLength = new JLabel();
	JTextField txtLength = new JTextField();
	JButton btnAddPoint = new JButton();
	JButton btnOverPoint = new JButton();
	JLabel lbGoLink = new JLabel();
	JCheckBox cbNumber = new JCheckBox();
	JCheckBox cbSmallChar = new JCheckBox();
	JCheckBox cbBigChar = new JCheckBox();
	JCheckBox cbCommand = new JCheckBox();
	JPanel gbType = new JPanel();
	JButton btnCopy = new JButton();
	JButton btnMake = new JButton();
	
	RandomMakerUI() {
		super("隨機數生成器");
		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
		setSize(225,240);
		setResizable(false);
		setLocationRelativeTo(null);

		this.initUI();
	}

	private void initUI() {
		//
		c.setLayout(null);

		// Text
		txtRandomString.setSize(200,20);
		txtRandomString.setLocation(10,10);
		txtRandomString.setEditable(false);
		c.add(txtRandomString);

		// Length Text
		lbLength.setText("長度 : ");
		lbLength.setSize(40, 20);
		lbLength.setLocation(10, 40);
		c.add(lbLength);

		// Length Input
		txtLength.setText("20");
		txtLength.setSize(20, 20);
		txtLength.setLocation(50, 40);
		txtLength.addKeyListener(new TxtLengthKeyAdapter());
		c.add(txtLength);

		// Length Add
		btnAddPoint.setText("+");
		btnAddPoint.setSize(45, 20);
		btnAddPoint.setLocation(80, 40);
		btnAddPoint.addActionListener(new AddPointActionPerformer());
		c.add(btnAddPoint);

		// Length Over
		btnOverPoint.setText("-");
		btnOverPoint.setSize(45, 20);
		btnOverPoint.setLocation(130, 40);
		btnOverPoint.addActionListener(new OverPointActionPerformer());
		c.add(btnOverPoint);

		//
		lbGoLink.setText("版權");
		lbGoLink.setSize(30, 20);
		lbGoLink.setLocation(180, 40);
		lbGoLink.addMouseListener(new lbGoLinkActionPerformer());
		c.add(lbGoLink);

		// CheckBox
		cbNumber.setText("只是數字"); cbCommand.setText("標點符號"); cbSmallChar.setText("小寫字母"); cbBigChar.setText("大寫字母");
		cbNumber.setSelected(true); cbSmallChar.setSelected(true); cbBigChar.setSelected(true);
		gbType.add(cbNumber); gbType.add(cbCommand); gbType.add(cbSmallChar); gbType.add(cbBigChar);

		// GroupBox
		gbType.setBorder(BorderFactory.createTitledBorder(BorderFactory.createTitledBorder("包含類型")));
		gbType.setSize(200, 100);
		gbType.setLocation(10, 70);
		c.add(gbType);

		// Copy
		btnCopy.setText("複製");
		btnCopy.setSize(85, 20);
		btnCopy.setLocation(10, 180);
		btnCopy.addActionListener(new btnCopyActionPerformer());
		c.add(btnCopy);

		// Make
		btnMake.setText("生成");
		btnMake.setSize(85, 20);
		btnMake.setLocation(120, 180);
		btnMake.addActionListener(new btnMakeActionPerformer());
		c.add(btnMake);
	}

	// Event Tigger
	class AddPointActionPerformer implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			String lenStr = txtLength.getText().toString();
			int lenInt = Integer.parseInt(lenStr);
			txtLength.setText( (lenStr == "" || lenInt <= 0) ? "1" : String.valueOf(lenInt + 1) );
			lenStr = null;
		}
	}

	class OverPointActionPerformer implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			String lenStr = txtLength.getText().toString();
			int lenInt = Integer.parseInt(lenStr);
			txtLength.setText( (lenStr == "" || lenInt <= 0) ? "1" : String.valueOf(lenInt - 1) );
			lenStr = null;		
		}
	}

	class lbGoLinkActionPerformer implements MouseListener {
		public void mouseEntered(MouseEvent me) {}
		public void mouseExited(MouseEvent me) {}
		public void mousePressed(MouseEvent me) {}
		public void mouseReleased(MouseEvent me) {}
		public void mouseClicked(MouseEvent me) {
			try {
				Desktop.getDesktop().browse(new URI("http://skhk.uni.cc/"));
			}catch(Exception e) {
			}
		}
	}

	class TxtLengthKeyAdapter implements KeyListener {
		String temp;

		public TxtLengthKeyAdapter() { temp = txtLength.getText().toString(); }
		public void keyTyped(KeyEvent e) {}
		public void keyPressed(KeyEvent e) {}
		public void keyReleased(KeyEvent e) {this.checkFormat();}

		private void checkFormat() {
			String lenStr = txtLength.getText().toString();

			if (!SeekLib.isNumber(txtLength.getText().toString())) {
				SeekLib.showMessage("不是數字");
				txtLength.setText(temp);
				return;
			}

			if (Integer.parseInt(lenStr) < 0) {
				SeekLib.showMessage("不可以是負數");
				txtLength.setText(temp);
				return;
			}
		}
	}

	class btnCopyActionPerformer implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			CopyToClipboard ctc = new CopyToClipboard();
			ctc.toClipboard(txtRandomString.getText().toString());
			SeekLib.showMessage("複製完成");
		}
	}

	class btnMakeActionPerformer implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			String lenStr = txtLength.getText().toString();

			//
			if (!SeekLib.isNumber(lenStr)) {
				SeekLib.showMessage("不是數字"); return;
			}

			if (Integer.parseInt(lenStr) < 0) {
				SeekLib.showMessage("不可以是負數"); return;
			}

			// StringBuilder > StringBuffer > String (More Status)
			StringBuilder temp = new StringBuilder();
			StringBuilder temp2= new StringBuilder();

			//
			if (cbNumber.isSelected()) temp.append("0123456789");
			if (cbCommand.isSelected()) temp.append("!@#$%^&*()_+{}[]:;.,?~`|");
			if (cbSmallChar.isSelected()) temp.append("abcdefghijklmnopqrstuvwxyz");
			if (cbBigChar.isSelected()) temp.append("ABCDEFGHIJKLMNOPQRSTUVWXYZ");

			//
			if (temp.length() <= 0) {
				SeekLib.showMessage("請先選取生成包含"); return;
			}

			//
			char[] charArr = temp.toString().toCharArray();
			int numAt;

			//
			for(int i=0; i<Integer.parseInt(lenStr); i++) {
				numAt = (int)(Math.random()*(temp.length()-1));
				temp2.append( charArr[numAt] );
			}

			txtRandomString.setText(temp2.toString());

			//
			System.gc();
		}
	}
}

//
class SeekLib {
	public static boolean isNumber(String str) {
		try {
			Integer.parseInt(str);
			return true;
		}catch (Exception e) {
			return false;
		}
	}

	public static void showMessage(String msg) {
		JOptionPane.showMessageDialog(null, msg);
	}
}

//
class CopyToClipboard implements ClipboardOwner {
	public void toClipboard(String rndStr) {
		SecurityManager sm = System.getSecurityManager();
		if (sm != null) {
			try {
				sm.checkSystemClipboardAccess();
			}catch (Exception e) {
				e.printStackTrace();
			}
		}
		Toolkit tk = Toolkit.getDefaultToolkit();
		StringSelection st = new StringSelection(rndStr);
		Clipboard cp = tk.getSystemClipboard();
		cp.setContents(st, this);
	}

	public void lostOwnership(Clipboard clip, Transferable tr) { 
		System.out.println("Lost Clipboard Ownership?!?");
	}
}