java基础教程案例：[55]java记事本代码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('替换'); mp=new MyPane(); jp1=new JPanel(); jl1=new JLabel('查找的内容(N)：'); jl2=new JLabel('替换为(P)：'); jtf1=new JTextField(9); jp5=new JPanel(); jp5.add(jtf1); jtf2=new JTextField(9); jp7=new JPanel(); jp7.add(jtf2); jcb=new JCheckBox('区分大小写(C)'); jb1=new JButton('查找下一个(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('替换(R)'); jb2.setEnabled(false); jb2.addActionListener(mp); jb3=new JButton('全部替换(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('查找内容(N):'); jtf=new JTextField(8); jp6=new JPanel(); jp6.add(jtf); jb1=new JButton('查找下一个(F):'); jb1.setEnabled(false); jb2=new JButton('取消'); jcb=new JCheckBox('区分大小写(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, '查找完毕!', '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, '查找完毕!', '提示', JOptionPane.WARNING_MESSAGE );}}}