notepad.java

来自「我用java做的记事本,不要太好啊!」· Java 代码 · 共 602 行 · 第 1/2 页

        edit.add(copy);
        edit.add(paste);
        edit.addSeparator();
        edit.add(statistic);
        edit.addSeparator();
        edit.add(selectAll);
        edit.add(timeanddate);
        bar.add(edit);
        
        form = new JMenu("格式(O)");
        form.setMnemonic('O');        
        line = new JCheckBoxMenuItem("自动换行",true);
        line.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {                
                text.setLineWrap(line.isSelected());                
            }
        });
        form.add(line);
        editable = new JCheckBoxMenuItem("缩定文本",true);
        editable.setSelected(false);
        
        editable.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {                
                text.setEditable(!editable.isSelected());                
            }
        });
        form.add(editable);
        fontChoose = new JMenuItem("字体");
        fontChoose.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                FontFrame fontframe = new FontFrame(font);
                fontframe.show();
                text.setFont(font);
            }
        });
        
        form.add(fontChoose);
        bar.add(form);        
        
        help = new JMenu("帮助(H)");
        helponline = new JMenuItem("帮助主题");
        about = new JMenuItem("关于记事本");
        about.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                JOptionPane.showMessageDialog(null,"          我的记事本");
            }
        });
        help.add(helponline); 
        help.addSeparator();
        help.add(about);
        help.setMnemonic('H');
        bar.add(help);
        this.setJMenuBar(bar);  
        
        
        
        text = new JTextArea();
        JScrollPane pane = new JScrollPane(text);        
        text.setLineWrap(true);
        getContentPane().add(pane);  
        
        cutC = new JMenuItem("剪切");
        cutC.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                text.cut();
                
            }
        });
        cutC.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X,InputEvent.CTRL_MASK));
        copyC = new JMenuItem("复制");
        copyC.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                text.copy();
            }
        });
        
        copyC.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,InputEvent.CTRL_MASK));
        pasteC = new JMenuItem("粘贴"); 
        pasteC.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                text.paste();
            }
        });
        pasteC.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V,InputEvent.CTRL_MASK));
        selectAllC = new JMenuItem("全选");
        selectAllC.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                text.selectAll();
            }
        });
        selectAllC.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_A,InputEvent.CTRL_MASK));
       
        
        popup = new JPopupMenu();
        popup.add(cutC);
        popup.add(copyC);
        popup.add(pasteC);
        popup.addSeparator();
        popup.add(selectAllC);
        text.addMouseListener(new MouseAdapter()
        {
             public void mouseReleased(MouseEvent event)
            {
                if(event.isPopupTrigger())
                    popup.show(event.getComponent(),event.getX(),event.getY());
            }
        });       
        
               
    }
}
//---------------------------------------------------------------------------------
//字体选择窗口
class FontFrame extends JFrame
{
    // variant
    private Font font;
    
    private JLabel labelFont;
    private JLabel labelShape;
    private JLabel labelSize;
    private JTextField fFont;
    private JTextField fShape;
    private JTextField fSize;
    private JList listFont;
    private JList listShape;
    private JList listSize;
    private JButton ok;
    private JButton cancel;
    private JTextField sample;
    
    public FontFrame(Font f)
    {
        this.font = f;
        setTitle("字体");
        setSize(500,350);   
        font = null;
        
          //-----------------------------------------------------------------------
        //Add Component
        //Set Grid Bag Layout
        getContentPane().setLayout(new GridBagLayout());
        GridBagConstraints con = new GridBagConstraints();
        con.fill = GridBagConstraints.NONE;
        con.anchor = GridBagConstraints.CENTER;
        con.weightx= 0;
        con.weighty = 0;
        labelFont = new JLabel("字体");
        add(labelFont,con,0,0,1,1);        
        
        labelShape = new JLabel("字形");        
        add(labelShape,con,1,0,1,1);
        labelSize = new JLabel("大小");
        add(labelSize,con,2,0,1,1);
        
        fFont = new JTextField("Arial",14);
        fFont.setEditable(false);
        add(fFont,con,0,1,1,1);        
        fShape = new JTextField("常规",7);
        fShape.setEditable(false);
        add(fShape,con,1,1,1,1);
        fSize = new JTextField("14",5);
        fSize.setEditable(false);
        add(fSize,con,2,1,1,1);        
        ok = new JButton("确定");
        ok.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                //System.exit(0);
            }
        });
        add(ok,con,3,1,1,1);
   //-------------------------------------------------------------
        
        String[] fontString = GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames();
        listFont = new JList(fontString);
        listFont.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        listFont.addListSelectionListener(new ListSelectionListener()
        {
            public void valueChanged(ListSelectionEvent e)
            {
                fFont.setText(((String)listFont.getSelectedValue()).trim());
                showExample();
            }
        });
        JScrollPane fontScrollPane = new JScrollPane(listFont);     
        add(fontScrollPane,con,0,2,1,1);
        
        String[] shapeString ={ "常规","斜体","粗体","粗斜体"};
        shapeString[0]+="             "; //增加宽度
        listShape = new JList(shapeString);
        listShape.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        listShape.setToolTipText("选择字形");
        listShape.addListSelectionListener(new ListSelectionListener()
        {
            public void valueChanged(ListSelectionEvent e)
            {
                fShape.setText(((String)listShape.getSelectedValue()).trim());
                showExample();
            }
        });
        JScrollPane shapeScrollPane = new JScrollPane(listShape);
        add(shapeScrollPane,con,1,2,1,1);
        
        String[] sizeString = new String[30];
        for(int i=0;i<sizeString.length;i++)
            sizeString[i]=""+(i+1);
        sizeString[0]+="        ";
        listSize = new JList(sizeString);
        listSize.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        listSize.addListSelectionListener(new ListSelectionListener()
        {
            public void valueChanged(ListSelectionEvent e)
            {
                fSize.setText(((String)listSize.getSelectedValue()).trim());
                showExample();
            }
        });
        
        JScrollPane sizeScrollPane = new JScrollPane(listSize);
        add(sizeScrollPane,con,2,2,1,1);
        con.anchor = GridBagConstraints.NORTH;
        cancel = new JButton("取消");
        cancel.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                //font = null;
                //System.exit(0);
            }
        });
        add(cancel,con,3,2,1,1);
   //-------------------------------------------------------------
        JPanel demoPanel = new JPanel();
        Border border = BorderFactory.createTitledBorder("示例文本");
        demoPanel.setBorder(border);
        sample = new JTextField("ABC",14);   
        sample.setEditable(true);        
        demoPanel.add(sample);
        con.anchor = GridBagConstraints.CENTER;
        add(demoPanel,con,1,3,2,1);
                
    }
   
    
    
     //Overload Funtion Add() To Add Component
    public void add(Component c,GridBagConstraints con,int x,int y,int w,int h)
    {
        con.gridx = x;
        con.gridy = y;
        con.gridwidth = w;
        con.gridheight = h;
        getContentPane().add(c,con);
        
        
    }
    
    
        public void showExample()
    {
        String name = fFont.getText();
        
        int style;
        if(fShape.getText().equals("常规"))
            style = Font.PLAIN;
        if(fShape.getText().equals("斜体"))
            style = Font.ITALIC;
        if(fShape.getText().equals("粗体"))
            style = Font.BOLD;
        if(fShape.getText().equals("粗斜体"))
            style = style = Font.BOLD + Font.ITALIC;
        else
            style  = 0;
        
        int size = Integer.parseInt(fSize.getText());
        
        font = new Font(name,style,size);
        sample.setFont(font);
    }    
    
}