notepad.java

一个java写的记事本

			if(findStr != null)
			{
				curSearch = textPane[current].getArea().getText().indexOf(findStr,curSearch+1);
				if(curSearch > -1)
					textPane[current].getArea().select(curSearch,findStr.length()+curSearch)  ;
			}	
		}
		if(e.getActionCommand() == "Replace")
		{
			String replace = JOptionPane.showInputDialog("请输入要替换的字符串:");
			textPane[current].getArea().replaceSelection(replace);
		}				
	}	
}

/**
 find操作面板
*/
class FindOption extends JDialog
{
	private JLabel findLabel   = new JLabel("Find:");
	private JTextField findFld = new JTextField(13) ;
	private JPanel condition = new JPanel();
	private JPanel direct 	 = new JPanel();
	private JCheckBox lowUp = new JCheckBox("区分大小写");
	private JCheckBox allOn = new JCheckBox("全字匹配")	 ;
	private JButton findB = new JButton("search");
	private JButton close = new JButton("close") ;
	private Border border = BorderFactory.createEtchedBorder();
	
	public FindOption()
	{
		condition.add(lowUp);
		condition.add(allOn);
		condition.setBorder(border);
		
		findB.addActionListener(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent ae)
				{
					int lower = 0;
					int upper = 0;
					findStr = findFld.getText();
					sourStr = textPane[current].getArea().getText();
					if(lowUp.isSelected() == true)
						curSearch = sourStr.indexOf(findStr);
					else
						{
							lower = sourStr.indexOf(findStr.toLowerCase());
							upper = sourStr.indexOf(findStr.toUpperCase());
							if(lower < upper && lower >= 0)
								curSearch = lower;
							else if(upper >= 0)
								curSearch = upper;
							else
								curSearch = sourStr.indexOf(findStr);		
						}
					if(curSearch > -1)			
						textPane[current].getArea().select(curSearch,findStr.length()+curSearch);
					setVisible(false);		  
				}
			});
		close.addActionListener(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent ae)
				{
					setVisible(false);
				}
			});	
		
		setLayout(new FlowLayout());
		setLocation(400,300)	   ;
		setSize(200,140);
		add(findLabel)	;
		add(findFld)	;
		add(condition)	;
		add(findB);
		add(close);
	}
/*	public int getCur()
	{
		return curSearch;//curSearch的值一直是0，不变.why
	}
	public String getStr()
	{
		return findStr;	
	}
*/
}

/**
 view菜单监听器
*/
class ViewAction implements ActionListener
{
	private JColorChooser fchooser = new JColorChooser();
	private JColorChooser bchooser = new JColorChooser();
	private JDialog fdialog	  ;
	private JDialog bdialog	  ;
	private JDialog set = new FontSet();	
		
	public void actionPerformed(ActionEvent e)
	{
		if(e.getActionCommand() == "Font")
		{
			set.setVisible(true);
		}
		if(e.getActionCommand() == "FontColor")
		{
			fdialog = fchooser.createDialog(frame,"set font's color",true,fchooser,
				new ActionListener()
				{
					public void actionPerformed(ActionEvent e)
					{
						textPane[current].getArea().setForeground(fchooser.getColor());	
					}	
				},null);
			fdialog.setVisible(true);
		}
		if(e.getActionCommand() == "Background")
		{
			bdialog = bchooser.createDialog(frame,"set background",true,bchooser,
				new ActionListener()
				{
					public void actionPerformed(ActionEvent e)
					{
						textPane[current].getArea().setBackground(bchooser.getColor());	
					}	
				},null);
			bdialog.setVisible(true);
		}
		if(e.getActionCommand() == "AutoWrap")
		{
			if(textPane[current].getArea().getLineWrap() == false)
				textPane[current].getArea().setLineWrap(true) ;
			else
				textPane[current].getArea().setLineWrap(false);
		}
	}	
}

/**
 字体设置dialog
*/
class FontSet extends JDialog
{
	private GraphicsEnvironment fontSet;
	private Font newFont	  ;
	private JPanel fontPane   ;
	private JPanel stylePane  ;
	private JPanel sizePane   ;
	private JList fontList 	  ;
	private JList styleList   ;
	private JList sizeList    ;
	private JScrollPane fscroll;
	private JScrollPane tscroll;
	private JScrollPane sscroll;
	private JButton okB 	= new JButton("ok")	   ;
	private JButton cancelB = new JButton("cancel");
	private JTextField fontFld  = new JTextField() ;
	private JTextField styleFld = new JTextField() ;
	private JTextField sizeFld  = new JTextField() ;
	private String[] styles = {"Plain","Bold","Italic","Bold&Italic"}  ;
	private String[] sizes  = {"1","2","3","4","5","6","7","8","9","10",
				 "12","14","16","18","20","24","36","48","72","else  "};
	private String preFont ;//前一次font设置
	private String preStyle;
	private String preSize ;			
	
	public FontSet()
	{
		super(frame,"font",true);
		
		preFont = "楷体"	;
		preStyle= "Plain"	;
		preSize = "18"		;
		
		fontSet  = GraphicsEnvironment.getLocalGraphicsEnvironment();
		fontList = new JList(fontSet.getAvailableFontFamilyNames()) ;
		styleList= new JList(styles);
		sizeList = new JList(sizes) ;
		
		fscroll = new JScrollPane(fontList)	;
		tscroll = new JScrollPane(styleList);
		sscroll = new JScrollPane(sizeList)	;
		
		fontPane  = new JPanel(new BorderLayout());
		stylePane = new JPanel(new BorderLayout());
		sizePane  = new JPanel(new BorderLayout());
		
		fontFld.setText(preFont)  ;
		styleFld.setText(preStyle);
		sizeFld.setText(preSize)  ;
		
		fontPane.add(fontFld,"North")  ;
		fontPane.add(fscroll,"Center") ;

		stylePane.add(styleFld,"North");
		stylePane.add(tscroll,"Center");

		sizePane.add(sizeFld,"North")  ;
		sizePane.add(sscroll,"Center") ;			

		setLocation(400,300)   ;
		setSize(350,255)	   ;
		setLayout(new FlowLayout());
			
		getContentPane().add(fontPane) ;
		getContentPane().add(stylePane);
 		getContentPane().add(sizePane) ;
 		add(okB)	;
 		add(cancelB);
 		
 		okB.addActionListener(
 			new ActionListener()
 			{
 				public void actionPerformed(ActionEvent e)
 				{
 					int sty = 0;
 					if(styleFld.getText() == "Plain")
 						sty = 0;
 					if(styleFld.getText() == "Bold")
 						sty = 1;
 					if(styleFld.getText() == "Italic")
 						sty = 2;
 					if(styleFld.getText() == "Bold&Italic")
 						sty = 3;			
 					newFont = new Font(fontFld.getText(),sty,
 						Integer.parseInt(sizeFld.getText()));
 					textPane[current].getArea().setFont(newFont);//set font
 					
 					preFont = fontFld.getText()	;
 					preStyle= styleFld.getText();
 					preSize = sizeFld.getText()	;
 					
 					setVisible(false);
 				}
 			});
 		cancelB.addActionListener(	
 			new ActionListener()
 			{
 				public void actionPerformed(ActionEvent e)
 				{
 					setVisible(false);
 				}
 			});

		fontList.addMouseListener(
			new MouseAdapter()
			{
				public void mouseClicked(MouseEvent me)
				{
					Object obj = fontList.getSelectedValue();
					fontFld.setText(obj.toString());					
				}	
			});
		styleList.addMouseListener(	
			new MouseAdapter()
			{
				public void mouseClicked(MouseEvent me)
				{
					Object obj = styleList.getSelectedValue();
					styleFld.setText(obj.toString());					
				}	
			});
		sizeList.addMouseListener(
			new MouseAdapter()
			{
				public void mouseClicked(MouseEvent me)
				{
					Object obj = sizeList.getSelectedValue();
					if(obj.toString() != "else  ")
						sizeFld.setText(obj.toString());					
				}	
			});	
	}
}

/**
 tool菜单监听器
*/
class ToolAction implements ActionListener
{
	private String str;
	private JDialog dialog   = new JDialog(frame);
	private JTextField words = new JTextField()  ;
	
	public void actionPerformed(ActionEvent e)
	{
		if(e.getActionCommand() == "NewWindow")
		{
			textPane[current].getArea().setText("");
		}
		if(e.getActionCommand() == "WordCount")
		{
			str = textPane[current].getArea().getText();
			words.setText("count is "+str.length())    ;
			words.setEditable(false)	;
			
			dialog.add(words)			;
			dialog.setLocation(400,300)	;
			dialog.setSize(100,80)		;
			dialog.setVisible(true)		; 
		}
		if(e.getActionCommand() == "Calc")
		{
			Runtime run = Runtime.getRuntime();
			try
			{
				Process pro = run.exec("c:\\windows\\system32\\Calc.exe");
			}
			catch(IOException ioe)
			{
				System.err.println("error");
			}	
		}
		if(e.getActionCommand() == "Command")
		{
			Runtime run = Runtime.getRuntime();
			try
			{
				Process pro = run.exec("c:\\windows\\system32\\cmd.exe");
			}
			catch(IOException ioe)
			{
				System.err.println("error");
			}				
		}
		if(e.getActionCommand() == "Option")
		{
			OptionSet option = new OptionSet();
			int returnVar = JOptionPane.showOptionDialog(frame,option,
								"Option",JOptionPane.OK_CANCEL_OPTION,
							JOptionPane.PLAIN_MESSAGE,null,null,null);
			if(JOptionPane.OK_OPTION == returnVar)
			{
				tab.setTabPlacement(option.getDirection());	
			}	
		}	
		
	}	
}

/**
 option设置
*/
class OptionSet extends JPanel
{
	private String[] direction  = {"up","bottom","left","right"}; 
	private JLabel tabDirection = new JLabel("标签方向:")		;
	private JComboBox tabDir	= new JComboBox(direction)		;
	
	public OptionSet()
	{
		add(tabDirection);
		add(tabDir);
	}
	public int getDirection()
	{
		if(tabDir.getSelectedItem() == "bottom")
			return JTabbedPane.BOTTOM;
		if(tabDir.getSelectedItem() == "left")
			return JTabbedPane.LEFT;
		if(tabDir.getSelectedItem() == "right")
			return JTabbedPane.RIGHT;
		else
			return JTabbedPane.TOP;				
	}
}
/**
 help菜单监听器
*/
class HelpAction implements ActionListener
{
	private Font font = new Font("楷体",1,36)	;
	private JDialog dialog = new JDialog(frame)	;
	private JTextArea topical = new JTextArea() ;
	
	public void actionPerformed(ActionEvent e)
	{
		if(e.getActionCommand() == "Topical")
		{
			topical.setFont(font)			;
			topical.setText("Author:shya")	;
			topical.setEditable(false)		;
			topical.setBackground(Color.getColor(""));
			
			JOptionPane.showConfirmDialog(frame,topical,
					    "Topical",JOptionPane.OK_OPTION,
					   JOptionPane.INFORMATION_MESSAGE);	
		}
		if(e.getActionCommand() == "About")
		{
			topical.setFont(font)			;
			topical.setText("SUPER NOTEPAD\nVersion:1.0");
			topical.setEditable(false)		;
			topical.setBackground(Color.getColor(""));
			
			JOptionPane.showMessageDialog(frame,topical,
					 "About",JOptionPane.PLAIN_MESSAGE);
		}
		
	}	
}
/**
 TextAreaListener
*/	
class TextListener implements DocumentListener
{
	public void	changedUpdate(DocumentEvent e) 
	{
		if(!tab.getTitleAt(current).endsWith("*"))
			tab.setTitleAt(current,tab.getTitleAt(current)+"*");
	}  
 	public void insertUpdate(DocumentEvent e) 
	{
		if(!tab.getTitleAt(current).endsWith("*"))
			tab.setTitleAt(current,tab.getTitleAt(current)+"*");
	}   
 	public void removeUpdate(DocumentEvent e)  
	{
		if(!tab.getTitleAt(current).endsWith("*"))
			tab.setTitleAt(current,tab.getTitleAt(current)+"*");
	}	
}
}