www.pudn.com > ParseAna.rar > MainClass.java

/** 
 * this is the main class 
 * @author:ºØ¾² 
 * @version: 1.2 
 */ 
import java.awt.BorderLayout; 
import javax.swing.BorderFactory; 
import javax.swing.JFileChooser; 
import javax.swing.JPanel; 
import javax.swing.JFrame; 
import javax.swing.JMenuBar;  
import javax.swing.JPopupMenu; 
import javax.swing.JSplitPane; 
import javax.swing.JScrollPane; 
import javax.swing.JTextArea; 
import javax.swing.JMenu; 
import javax.swing.JButton; 
import javax.swing.LookAndFeel; 
 
import java.awt.FlowLayout; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 
import java.awt.event.ItemEvent; 
import java.awt.event.ItemListener; 
import java.awt.event.MouseEvent; 
import java.awt.event.MouseListener; 
import java.io.BufferedReader; 
import java.io.File; 
import java.io.FileReader; 
import java.io.IOException; 
import javax.swing.JMenuItem; 
import javax.swing.JCheckBox; 
import javax.swing.event.DocumentEvent; 
import javax.swing.event.DocumentListener; 
 
public class MainClass extends JFrame implements ActionListener, MouseListener, ItemListener, DocumentListener { 
 
	private static final long serialVersionUID = 1L; 
 
	private JPanel jContentPane = null; 
 
	private JSplitPane jSplitPane = null; 
 
	private JScrollPane leftScrollPane = null; 
 
	private JTextArea inputTextArea, outTextArea; 
 
	private JScrollPane rightScrollPane = null; 
 
	private JPanel jPanel = null; 
 
	private JButton openButton, scanButton; 
 
	private JFileChooser fileChooser = new JFileChooser(); 
 
	private JMenu jMenu = null; 
 
	private JMenuBar clearBar = null; 
 
	private JMenuItem inputItem, outputItem, allItem, pm1, pm2, pm3; 
 
	private JPopupMenu pm = new JPopupMenu(); 
 
	private JCheckBox jCheckBox = null; 
	 
	private MultilineLabel lineLabel=new MultilineLabel(""); 
	 
	private int lineNo; 
 
	// return javax.swing.JPanel 
	private JPanel getJContentPane() { 
		if (jContentPane == null) { 
			jContentPane = new JPanel(); 
			jContentPane.setLayout(new BorderLayout()); 
			jContentPane.add(getJPanel(), java.awt.BorderLayout.NORTH); 
			jContentPane.add(getJSplitPane(), java.awt.BorderLayout.CENTER); 
		} 
		return jContentPane; 
	} 
 
	// @return javax.swing.JSplitPane 
	private JSplitPane getJSplitPane() { 
		if (jSplitPane == null) { 
			jSplitPane = new JSplitPane(); 
			jSplitPane.setDividerLocation(330); 
			jSplitPane.setRightComponent(getRightScrollPane()); 
			jSplitPane.setLeftComponent(getLeftScrollPane()); 
			jSplitPane.setOneTouchExpandable(true); 
		} 
		return jSplitPane; 
	} 
 
	private JPanel getJPanel() { 
		if (jPanel == null) { 
			FlowLayout flowLayout = new FlowLayout(); 
			flowLayout.setAlignment(java.awt.FlowLayout.LEFT); 
			jPanel = new JPanel(); 
			jPanel.setBackground(new java.awt.Color(224, 255, 255)); 
			jPanel.setLayout(flowLayout); 
			jPanel.setPreferredSize(new java.awt.Dimension(10, 30)); 
			jPanel.add(getOpenButton(), null); 
			jPanel.add(getScanButton(), null); 
			jPanel.add(getClearBar()); 
			jPanel.add(getJCheckBox(), null); 
		} 
		return jPanel; 
	} 
 
	// return javax.swing.JMenuBar 
	private JMenuBar getClearBar() { 
		if (clearBar == null) { 
			clearBar = new JMenuBar(); 
			clearBar.setBackground(new java.awt.Color(241, 255, 255)); 
			clearBar.add(getJMenu()); 
		} 
		return clearBar; 
	} 
 
	// return javax.swing.JScrollPane 
	private JScrollPane getLeftScrollPane() { 
		if (leftScrollPane == null) { 
			leftScrollPane = new JScrollPane(); 
			leftScrollPane.setBorder(BorderFactory.createCompoundBorder( 
					BorderFactory.createTitledBorder("input"), BorderFactory 
							.createEmptyBorder())); 
			leftScrollPane.setBackground(new java.awt.Color(239, 255, 255)); 
			lineLabel.setVisible(false); 
			lineLabel.setFont(new java.awt.Font("Dialog", 
					java.awt.Font.BOLD, 14)); 
			leftScrollPane.setRowHeaderView(lineLabel); 
			leftScrollPane.setViewportView(getInputTextArea()); 
		} 
		return leftScrollPane; 
	} 
 
	// return javax.swing.JTextArea 
	private JTextArea getInputTextArea() { 
		if (inputTextArea == null) { 
			inputTextArea = new JTextArea(); 
			inputTextArea.setFont(new java.awt.Font("Dialog", java.awt.Font.PLAIN, 14)); 
			inputTextArea.addMouseListener(this); 
			pm = new JPopupMenu(); 
			pm1 = new JMenuItem("¼ôÇÐ"); 
			pm1.setBackground(new java.awt.Color(241, 255, 255)); 
			pm2 = new JMenuItem("¸´ÖÆ"); 
			pm2.setBackground(new java.awt.Color(241, 255, 255)); 
			pm3 = new JMenuItem("Õ³Ìù"); 
			pm3.setBackground(new java.awt.Color(241, 255, 255)); 
			pm.add(pm1); 
			pm.add(pm2); 
			pm.add(pm3); 
			inputTextArea.add(pm); 
		} 
		return inputTextArea; 
	} 
 
	// return javax.swing.JScrollPane 
	private JScrollPane getRightScrollPane() { 
		if (rightScrollPane == null) { 
			rightScrollPane = new JScrollPane(); 
			rightScrollPane.setBorder(BorderFactory.createCompoundBorder( 
					BorderFactory.createTitledBorder("output"), BorderFactory 
							.createEmptyBorder())); 
			rightScrollPane.setBackground(new java.awt.Color(239, 255, 255)); 
			rightScrollPane.setViewportView(getOutTextArea()); 
		} 
		return rightScrollPane; 
	} 
 
	// @return javax.swing.JTextArea 
	private JTextArea getOutTextArea() { 
		if (outTextArea == null) { 
			outTextArea = new JTextArea(); 
			outTextArea.setFont(new java.awt.Font("Dialog", 
					java.awt.Font.PLAIN, 14)); 
			outTextArea.setEditable(false); 
		} 
		return outTextArea; 
	} 
 
	// @return javax.swing.JButton 
	private JButton getOpenButton() { 
		if (openButton == null) { 
			openButton = new JButton(); 
			openButton.setText("Open"); 
			openButton.setBackground(new java.awt.Color(241, 255, 255)); 
			openButton.setFont(new java.awt.Font("DialogInput", 
					java.awt.Font.BOLD, 12)); 
			openButton.setBorderPainted(false); 
		} 
		return openButton; 
	} 
 
	// return javax.swing.JButton 
	private JButton getScanButton() { 
		if (scanButton == null) { 
			scanButton = new JButton(); 
			scanButton.setText("Analyze"); 
			scanButton.setBackground(new java.awt.Color(241, 255, 255)); 
			scanButton.setBorderPainted(false); 
		} 
		return scanButton; 
	} 
	/** 
	 * This method initializes jCheckBox	 
	 * 	 
	 * @return javax.swing.JCheckBox	 
	 */ 
	private JCheckBox getJCheckBox() { 
		if (jCheckBox == null) { 
			jCheckBox = new JCheckBox(); 
			jCheckBox.setText("LineNo"); 
			jCheckBox.setBackground(new java.awt.Color(241, 255, 255)); 
			jCheckBox.addItemListener(this); 
		} 
		return jCheckBox; 
	} 
	/** 
	 * This is the default constructor 
	 */ 
	public MainClass() { 
		super(); 
		initialize(); 
	} 
 
	/** 
	 * This method initializes this 
	 */ 
	private void initialize() { 
		this.setBackground(new java.awt.Color(238, 238, 238)); 
		this.setBounds(new java.awt.Rectangle(160, 50, 673, 547)); 
		this.setContentPane(getJContentPane()); 
		this.setTitle("´Ê·¨·ÖÎö"); 
		this.setVisible(true); 
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
		fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY); 
		openButton.addActionListener(this); 
		scanButton.addActionListener(this); 
		inputItem.addActionListener(this); 
		outputItem.addActionListener(this); 
		allItem.addActionListener(this); 
		pm1.addActionListener(this); 
		pm2.addActionListener(this); 
		pm3.addActionListener(this); 
	} 
 
	// return javax.swing.JMenu 
	private JMenu getJMenu() { 
		if (jMenu == null) { 
			jMenu = new JMenu(); 
			// jMenu.setBackground(new java.awt.Color(241,255,255)); 
			jMenu.setText("Clear"); 
			jMenu.setFont(new java.awt.Font("DialogInput", java.awt.Font.BOLD, 
					12)); 
			inputItem = new JMenuItem("Clear InputBox"); 
			inputItem.setBackground(new java.awt.Color(241, 255, 255)); 
			outputItem = new JMenuItem("Clear OutputBox"); 
			outputItem.setBackground(new java.awt.Color(241, 255, 255)); 
			allItem = new JMenuItem("Clear All"); 
			allItem.setBackground(new java.awt.Color(241, 255, 255)); 
			jMenu.add(inputItem); 
			jMenu.add(outputItem); 
			jMenu.add(allItem); 
		} 
		return jMenu; 
	} 
 
	public void openFile() { 
		int result = fileChooser.showOpenDialog(null); 
		if (result == JFileChooser.APPROVE_OPTION) { 
			try { 
				File fileName = fileChooser.getSelectedFile(); 
				BufferedReader input = new BufferedReader(new FileReader( 
						fileName)); 
				String line = input.readLine(); 
				inputTextArea.setText(""); 
				while (line != null) { 
					inputTextArea.append(line + "\n"); 
					line = input.readLine(); 
				} 
				input.close(); 
			} catch (IOException ioe) { 
				System.out.println(ioe.toString()); 
			} catch (NullPointerException Ex) { 
				System.out.println(); 
			} catch (Exception ex) { 
				System.out.println(); 
			} 
		} 
	} 
	public void changeLabel(){ 
		 
		if (inputTextArea.getLineCount() != lineNo) { 
			lineNo = inputTextArea.getLineCount(); 
			String s = ""; 
			for (int j = 1; j <= lineNo; j++) { 
				s += j + "\n"; 
			} 
			 lineLabel.setText(s); 
		} 
	} 
	//scan.setBufferInput(s); 
	public void actionPerformed(ActionEvent e) { 
		if (e.getSource() == openButton) { 
			openFile(); 
		} else if (e.getSource() == scanButton) { 
			String s = inputTextArea.getText(); 
			if (s.equals("")) { 
				outTextArea 
						.setText("ERROR: Please input strings in the leftbox!"); 
			} else { 
				LexAna scan = new LexAna(); 
				scan.setBufferInput(s); 
				Parse parse=new Parse(scan); 
				try { 
					AST program=parse.parseAna(); 
					outTextArea.setText(parse.getPrint(program) 
							+"\n"+parse.getErrorToken()); 
				} catch (Exception e1) { 
//					outTextArea.setText("Exception"); 
					e1.printStackTrace(); 
				} 
			} 
		} else if (e.getSource() == inputItem) 
			inputTextArea.setText(""); 
		else if (e.getSource() == outputItem) 
			outTextArea.setText(""); 
		else if (e.getSource() == allItem) { 
			inputTextArea.setText(""); 
			outTextArea.setText(""); 
		} else if (e.getSource() == pm1) { 
			inputTextArea.cut(); 
		} else if (e.getSource() == pm2) { 
			inputTextArea.copy(); 
		} else if (e.getSource() == pm3) 
			inputTextArea.paste(); 
	} 
 
	public void mouseReleased(MouseEvent e) { 
		try { 
			if (e.isPopupTrigger()) { 
				pm.show(this, e.getX(), e.getY()); 
			} 
		} catch (NullPointerException ex) { 
		} catch (Exception exception) { 
		} 
	} 
 
	public void mouseEntered(MouseEvent e) { 
	} 
 
	public void mouseClicked(MouseEvent e) { 
	} 
 
	public void mouseExited(MouseEvent e) { 
	} 
 
	public void mousePressed(MouseEvent e) { 
	} 
 
	public static void main(String[] args) { 
		new MainClass(); 
	} 
 
	public void itemStateChanged(ItemEvent e) { 
		if(e.getSource()==jCheckBox){ 
			if(jCheckBox.isSelected()){ 
				inputTextArea.getDocument().addDocumentListener(this); 
				lineNo=0; 
				changeLabel(); 
				lineLabel.setVisible(true); 
			}else{ 
				inputTextArea.getDocument().removeDocumentListener(this); 
				lineLabel.setText(""); 
				lineLabel.setVisible(false); 
		}} 
	} 
 
	public void insertUpdate(DocumentEvent e) { 
		changeLabel(); 
	} 
 
	public void removeUpdate(DocumentEvent e) { 
		changeLabel(); 
		 
	} 
 
	public void changedUpdate(DocumentEvent e) { 
		changeLabel(); 
	} 
}  
 
//create a label supporting multiline by extending JTextArea 
class MultilineLabel extends JTextArea { 
	private static final long serialVersionUID = (long) 1.2; 
	public MultilineLabel(String s) { 
		super(s); 
	} 
	public void updateUI() { 
		super.updateUI(); 
		setWrapStyleWord(true); 
		setHighlighter(null); 
		setEditable(false); 
		LookAndFeel.installBorder(this, "Label.border"); 
		LookAndFeel.installColorsAndFont(this, "Label.background", 
				"Label.foreground", "Label.font"); 
	} 
	 
}