java基礎教程案例：[55]java記事本代碼4?

class MyReplace extends JDialog

{

JLabel jl1,jl2,jl3;

JTextField jtf1,jtf2;

JCheckBox jcb;

MyPane mp;

JButton jb1,jb2,jb3,jb4;

JPanel jp1,jp2,jp3;

JPanel jp5,jp6,jp7,jp8;

public MyReplace()

{

this.setTitle("替換");

mp=new MyPane();

jp1=new JPanel();

jl1=new JLabel("查找的內容(N)：");

jl2=new JLabel("替換為(P)：");

jtf1=new JTextField(9);

jp5=new JPanel();

jp5.add(jtf1);

jtf2=new JTextField(9);

jp7=new JPanel();

jp7.add(jtf2);

jcb=new JCheckBox("區分大小寫(C)");

jb1=new JButton("查找下一個(F)");

jb1.setEnabled(false);

jb1.addActionListener(mp);

jp6=new JPanel();

jp6.add(jb1);

jp1.setLayout(new GridLayout(1,3));

jp1.add(jl1);

jp1.add(jp5);

jp1.add(jp6);

jb2=new JButton("替換(R)");

jb2.setEnabled(false);

jb2.addActionListener(mp);

jb3=new JButton("全部替換(A)");

jb3.setEnabled(false);

jb3.addActionListener(mp);

mp.setLayout(new GridLayout(2,1));

mp.add(jb2);

mp.add(jb3);

jb4=new JButton("取消");

jp8=new JPanel();

jp8.add(jb4);

jb4.addActionListener(mp);

jp2=new JPanel();

jp2.setLayout(new GridLayout(1,3));

jp2.add(jl2);

jp2.add(jp7);

jp2.add(mp);

jl3=new JLabel();

jp3=new JPanel();

jp3.setLayout(new GridLayout(1,3));

jp3.add(jcb);

jp3.add(jl3);

jp3.add(jp8);

this.setLayout(new GridLayout(3,3));

this.add(jp1);

this.add(jp2);

this.add(jp3);

this.setSize(400, 150);

this.setLocation(420, 280);

this.setVisible(true);

}

}

class MySearch extends JDialog

{

JLabel jl,jl1;

JTextField jtf;

JButton jb1,jb2;

JCheckBox jcb;

JRadioButton jrb1,jrb2;

ButtonGroup bg;

MyPanel mp;

JPanel jp1,jp2,jp3,jp4,jp5,jp6;

public MySearch()

{

this.setTitle("查找");

jl=new JLabel("查找內容(N):");

jtf=new JTextField(8);

jp6=new JPanel();

jp6.add(jtf);

jb1=new JButton("查找下一個(F):");

jb1.setEnabled(false);

jb2=new JButton("取消");

jcb=new JCheckBox("區分大小寫(C)");

jrb1=new JRadioButton("向上(U)");

jrb1.setSelected(true);

jrb2=new JRadioButton("向下(D)");

bg=new ButtonGroup();

bg.add(jrb1);

bg.add(jrb2);

mp=new MyPanel();

mp.add(jb1);

jb1.addActionListener(mp);

jb2.addActionListener(mp);

jp1=new JPanel();

jp1.setBorder(BorderFactory.createTitledBorder("方向"));

jp1.setLayout(new GridLayout(1,2));

jp1.add(jrb1);

jp1.add(jrb2);

jp1.setPreferredSize(new Dimension(17,2));

jp2=new JPanel();

jp2.setLayout(new GridLayout(1,3));

jp2.add(jcb);

jp2.add(jp1);

jp3=new JPanel();

jp3.setLayout(new GridLayout(1,2));

jp3.add(jl);

jp3.add(jp6);

jp4=new JPanel();

jp4.setLayout(new GridLayout(1,2));

jp4.add(jp3);

jp4.add(mp);

jp5=new JPanel();

jp5.add(jb2);

jp2.add(jp5);

this.setLayout(new GridLayout(2,1));

this.add(jp4);

this.add(jp2);

j=pad.jta.getCaretPosition();

this.setSize(450, 150);

this.setLocation(420, 280);

this.setVisible(true);

}

}

class MyPane extends JPanel implements Runnable ,ActionListener

{

public void actionPerformed(ActionEvent e)

{

if(mReplace.jb4==e.getSource())

{

mReplace.dispose();

}

if(e.getSource()==mReplace.jb3)

{

String str1=pad.jta.getText();

String str2=mReplace.jtf1.getText();

String str3=mReplace.jtf2.getText();

String str4=str1.toLowerCase();

String str5=str2.toLowerCase();

String str6=str3.toLowerCase();

String strA="",strB="",strC="";

if(mReplace.jcb.isSelected())

{

strA=str1;

strB=str2;

strC=str3;

}else

{

strA=str4;

strB=str5;

strC=str6;

}

pad.jta.setText(strA.replaceAll(strB,strC));

}

if(e.getSource()==mReplace.jb2)

{

String str1=pad.jta.getText();

String str2=mReplace.jtf1.getText();

String str3=mReplace.jtf2.getText();

String str4=str1.toLowerCase();

String str5=str2.toLowerCase();

String str6=str3.toLowerCase();

String strA="",strB="",strC="";

if(mReplace.jcb.isSelected())

{

strA=str1;

strB=str2;

strC=str3;

}else

{

strA=str4;

strB=str5;

strC=str6;

}

int s=strA.indexOf(strB,start);

if(strA.indexOf(strB,start)!=-1)

{

pad.jta.setText(strA.replaceFirst(strB,strC));

pad.jta.setSelectionStart(s);

pad.jta.setSelectionEnd(s+strB.length());

pad.jta.setSelectedTextColor(Color.blue);

start=s+1;

}else

{

JOptionPane.showMessageDialog(null, "查找完畢!", "提示", JOptionPane.WARNING_MESSAGE );

}

}

if(mReplace.jb1==e.getSource())

{

String str1=pad.jta.getText();

String str2=mReplace.jtf1.getText();

String str3=str1.toLowerCase();

String str4=str2.toLowerCase();

String strA="",strB="";

if(mReplace.jcb.isSelected())

{

strA=str1;

strB=str2;

}else

{

strA=str3;

strB=str4;

}

int s=strA.indexOf(strB,start);

if(strA.indexOf(strB,start)!=-1)

{

pad.jta.setSelectionStart(s);

pad.jta.setSelectionEnd(s+strB.length());

pad.jta.setSelectedTextColor(Color.blue);

start=s+1;

}else

{

JOptionPane.showMessageDialog(null, "查找完畢!", "提示", JOptionPane.WARNING_MESSAGE );

}

}

}

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