package Find;
import Main.MainFrame;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.*;
/**
*@用于记事本中的查找、查找下一个以及替换的功能的窗口
* @author 小路
* @date 2013-05-04
*/
public class FindAndReplace extends JDialog
{
private MainFrame mf;
private FindAndReplace far = this;
private JLabel findwhat = new JLabel("查找内容(N):");
private JLabel replaceto = new JLabel(" 替换为(P):");
private JTextField findtext = new JTextField("");
private JTextField replacetext = new JTextField("");
private JCheckBox distinguish = new JCheckBox("区分大小写");
private JRadioButton up = new JRadioButton("向上(U)");
private JRadioButton down = new JRadioButton("向下(D)",true);//默认向下找
private JButton findnext = new JButton("查找下一个");
private JButton findall = new JButton("查找全部");
private JButton replace = new JButton("替换");
private JButton replaceall = new JButton("全部替换");
private JButton cancle = new JButton("取消");
private int findnextcount = 0;//用于计数单击了多少次查找下一个
public FindAndReplace(MainFrame mf)//MainFrame mf
{
this.mf = mf;
}
public void init()
{
//标签、文本框、按钮是否可用
findnext.setEnabled(false);
findall.setEnabled(false);
replace.setEnabled(false);
replaceall.setEnabled(false);
//监听器
findtext.addKeyListener(new KeyAdapter()
{
public void keyReleased(KeyEvent ke)
{
if(findtext.getText().length()!=0)
{
findnext.setEnabled(true);
findall.setEnabled(true);
}
else
{
findnext.setEnabled(false);
findall.setEnabled(false);
}
}
});
replacetext.addKeyListener(new KeyAdapter()
{
public void keyReleased(KeyEvent e)
{
if(replacetext.getText().length()!=0)
{
replace.setEnabled(true);
replaceall.setEnabled(true);
}
else
{
replace.setEnabled(false);
replaceall.setEnabled(false);
}
}
});
findnext.setActionCommand("查找下一个");
findall.setActionCommand("查找全部");
replace.setActionCommand("替换");
replaceall.setActionCommand("全部替换");
cancle.setActionCommand("取消");
findnext.addActionListener(new MyListener());
findall.addActionListener(new MyListener());
replace.addActionListener(new MyListener());
replaceall.addActionListener(new MyListener());
cancle.addActionListener(new MyListener());
//添加查找标签和第一个文本框的box
Box box1 = Box.createHorizontalBox();
box1.add(Box.createHorizontalStrut(5));
box1.add(findwhat);
box1.add(Box.createHorizontalStrut(5));
box1.add(findtext);
box1.add(Box.createHorizontalStrut(5));
//添加替换标签第二个文本框box
Box box2 = Box.createHorizontalBox();
box1.add(Box.createHorizontalStrut(5));
box2.add(replaceto);
box2.add(Box.createHorizontalStrut(15));
box2.add(replacetext);
box2.add(Box.createHorizontalStrut(10));
//添加两个单选按钮的Box
up.setActionCommand("向上");
down.setActionCommand("向下");
up.addActionListener(new MyListener());
down.addActionListener(new MyListener());
ButtonGroup bg = new ButtonGroup();
bg.add(up);
bg.add(down);
Box box3 = Box.createHorizontalBox();
box3.setBorder(BorderFactory.createTitledBorder("方向"));
box3.add(Box.createHorizontalStrut(5));
box3.add(up);
box3.add(Box.createHorizontalStrut(5));
box3.add(down);
box3.add(Box.createHorizontalStrut(5));
//添加区分复选框和两个单选按钮的box
Box box4 = Box.createHorizontalBox();
box4.add(distinguish);
box4.add(box3);
//主窗体的Box
Box mainbox = Box.createVerticalBox();
mainbox.add(Box.createVerticalStrut(5));
mainbox.add(box1);
mainbox.add(Box.createVerticalStrut(15));
mainbox.add(box2);
mainbox.add(Box.createVerticalStrut(15));
mainbox.add(box4);
//右边区域的box
Box box5 = Box.createHorizontalBox();
box5.add(Box.createHorizontalStrut(5));
box5.add(findnext);
box5.add(Box.createHorizontalStrut(3));
box5.add(findall);
box5.add(Box.createHorizontalStrut(3));
box5.add(replace);
box5.add(Box.createHorizontalStrut(3));
box5.add(replaceall);
box5.add(Box.createHorizontalStrut(3));
box5.add(cancle);
box5.add(Box.createHorizontalStrut(5));
mainbox.add(Box.createVerticalStrut(15));
mainbox.add(box5);
mainbox.add(Box.createVerticalStrut(5));
this.add(mainbox);
this.pack();
this.setResizable(false);
}
private class MyListener implements ActionListener
{
public void actionPerformed(ActionEvent ae)
{
switch(ae.getActionCommand())
{
case "向上":
break;
case "向下":
break;
case "查找下一个":
findnextcount++;
findNext();
break;
case "查找全部":
findAll();
break;
case "替换":
replace();
break;
case "替换全部":
replaceAll();
break;
case "取消":
far.removeAll();
far.dispose();
break;
}
}
}
private int findNext()
{
//实现向上和向下方向搜素的比较简单，但是实现以光标当前的位置来上下搜素没有达到令人满意的效果，所以暂时没完善
String find = findtext.getText();
String main = mf.getMainText().getText().replaceAll("\n", "");
int count = 1;
if(!distinguish.isSelected())//不区分大小写
{
find = find.toLowerCase();
main = main.toLowerCase();
}
//因为在单击按钮的时候光标就已经不在文本域中了，读取光标的位置不太靠谱
int length = main.length() - find.length() + 1;
if(length>0)
{
int [] start = new int[length];//标记匹配处开头位置，最多有Length个匹配的开头坐标值
for(int i =0;i<length;i++)
{
if(main.substring(i, i+find.length()).equals(find))
{
//要记下i的位置
start[count] = i;
count++;
}
}
if(findnextcount<count)
{
mf.getMainText().setSelectedTextColor(Color.RED);
if(up.isSelected())
{
mf.getMainText().select(start[count-findnextcount], start[count-findnextcount]+find.length());
}
if(down.isSelected())
{
mf.getMainText().select(start[findnextcount], start[findnextcount]+find.length());
}
}
else
{
JOptionPane.showMessageDialog(this, "找不到"+find);
mf.getMainText().select(0, 0);
findnextcount = 0;
count = 1;
return 0;
}
}
else
{
JOptionPane.showMessageDialog(this, "找不到"+find);
mf.getMainText().select(0, 0);
findnextcount = 0;
count = 1;
return 0;
}
return 0;
}
public void findAll()
{
}
private void replace()
{
mf.getMainText().replaceSelection(replacetext.getText());
}
private void replaceAll()
{
}
public void showFindAndReplace(MainFrame mf,String title)
{
if(title=="查找"||title=="查找下一个")
{
this.replacetext.setEnabled(false);
this.replace.setEnabled(false);
this.replaceall.setEnabled(false);
}
this.setTitle(title);
this.init();
this.setLocationRelativeTo(mf);
this.setAlwaysOnTop(true);
this.setVisible(true);
}
public static void main(String[] args)
{
}
}
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