java文本編輯器v2.0 圖形用戶界面

package 文本編輯器;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GraphicsEnvironment;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;

import javax.swing.ButtonGroup;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JCheckBoxMenuItem;
import javax.swing.JColorChooser;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JRadioButton;
import javax.swing.JRadioButtonMenuItem;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JToolBar;
import javax.swing.KeyStroke;
import javax.swing.WindowConstants;


@SuppressWarnings("serial")
public class TextEditBox extends JFrame {
    // 添加屬性
    private JComboBox combox_name, combox_size;// 字體、字號組合框
    private JButton button_larger,button_smaller,button_color;//字體變大變小和顏色選擇器
    private JCheckBox checkb_bold, checkb_italic;// 粗體、斜體復選框
    private JPopupMenu popupmenu;
    private JTextArea ta = new JTextArea();
    private JScrollPane sp = new JScrollPane(ta);
    //查找對話框屬性
    private JTextField tf_search;
    private JButton button_next;
    //
    private int key=0;

    public TextEditBox(String str) {
        super(str);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        Dimension dim = getToolkit().getScreenSize(); // 獲得屏幕分辨率
        this.setBounds(dim.width / 4, dim.height / 4, 700, 480);
        JToolBar toolbar = new JToolBar(); // 創建工具欄
        this.add(toolbar, BorderLayout.NORTH); // 工具欄添加到窗格北部
        this.add(sp);
        ta.setLineWrap(true);// 換行
        //////////////////字體
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        String[] fontsName = ge.getAvailableFontFamilyNames(); // 獲得系統字體
        combox_name = new JComboBox(fontsName);
        toolbar.add(combox_name);
        combox_name.addActionListener(new ActionListener() {// 字號
            public void actionPerformed(ActionEvent e) {
                String fontname = (String)combox_name.getSelectedItem();//獲得字體名
                Font font = ta.getFont();     //獲得文本區的當前字體對象
                int style = font.getStyle();      //獲得字形
                int size = font.getSize();
                ta.setFont(new Font(fontname, style, size));
            }
        });
        /////////////////字號
        String sizestr[] = { "20", "30", "40", "50", "60", "70" ,"80","90","100"};
        combox_size = new JComboBox(sizestr);
        combox_size.setEditable(true);
        toolbar.add(combox_size);
        combox_size.addActionListener(new ActionListener() {// 字號
            public void actionPerformed(ActionEvent e) {
                String fontname = (String)combox_name.getSelectedItem();//獲得字體名
                int size = Integer.parseInt((String)combox_size.getSelectedItem());
                Font font = ta.getFont();     //獲得文本區的當前字體對象
                int style = font.getStyle();      //獲得字形
                ta.setFont(new Font(fontname, style, size));
            }
        });
        ////////////////////字號加減按鈕
        button_larger=new JButton("A+");
        toolbar.add(button_larger);
        button_larger.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String fontname = (String)combox_name.getSelectedItem();//獲得字體名
                Font font = ta.getFont();     //獲得文本區的當前字體對象
                int style = font.getStyle();      //獲得字形
                int size = font.getSize()+5;
                ta.setFont(new Font(fontname, style, size));
            }
        });
        button_smaller=new JButton("A-");
        toolbar.add(button_smaller);
        button_smaller.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String fontname = (String)combox_name.getSelectedItem();//獲得字體名
                Font font = ta.getFont();     //獲得文本區的當前字體對象
                int style = font.getStyle();      //獲得字形
                int size = font.getSize()-5;
                ta.setFont(new Font(fontname, style, size));
            }
        });
        /////////////////J
        /////////////////粗體和斜體
        checkb_bold = new JCheckBox("粗體"); //字形復選框
        toolbar.add(checkb_bold);
        checkb_bold.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String fontname = (String)combox_name.getSelectedItem();//獲得字體名
                Font font = ta.getFont();     //獲得文本區的當前字體對象
                int style = font.getStyle();      //獲得字形
                int size = font.getSize();
                style = style ^ 1;
                ta.setFont(new Font(fontname, style, size));
            }
        });
        checkb_italic = new JCheckBox("斜體");
        toolbar.add(checkb_italic);
        checkb_italic.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String fontname = (String)combox_name.getSelectedItem();//獲得字體名
                Font font = ta.getFont();     //獲得文本區的當前字體對象
                int style = font.getStyle();      //獲得字形
                int size = font.getSize();
                style = style ^ 2;
                ta.setFont(new Font(fontname, style, size));
            }
        });
        ////////////////
        JRadioButton radiob_color[];
        String colorstr[]={"紅","綠","藍"};
        ButtonGroup bgroup_color = new ButtonGroup();      //按鈕組
        radiob_color = new JRadioButton[colorstr.length];  //顏色單選按鈕數組
        for (int i=0; i<radiob_color.length; i++){
            radiob_color[i]=new JRadioButton(colorstr[i]);
            bgroup_color.add(radiob_color[i]); //添加到按鈕組
            toolbar.add(radiob_color[i]);     //添加到工具欄
        }
        radiob_color[0].addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                ta.setForeground(Color.red);// 設置顏色
            }
        });
        radiob_color[1].addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                ta.setForeground(Color.green);
            }
        });
        radiob_color[2].addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                ta.setForeground(Color.blue);
            }
        });
        ///////////////顏色選擇器
        button_color=new JButton("其他");
        toolbar.add(button_color);
        button_color.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                Color color;
                color=JColorChooser.showDialog(TextEditBox.this,"顏色選擇", Color.black);
                ta.setForeground(color);// 設置顏色
            }
        });
        ////////////////鼠標事件
        ta.addMouseListener(new MouseAdapter() {// 鼠標事件處理方法，右擊彈出菜單
            public void mouseClicked(MouseEvent e) {
                if (e.getModifiers() == MouseEvent.BUTTON3_MASK) // 單擊的是鼠標右鍵
                    popupmenu.show(ta, e.getX(), e.getY()); // 在鼠標單擊處顯示快捷菜單
            }
        });
        ////////////////
        this.addmyMenu();       //調用自定義方法，添加菜單
        this.setVisible(true);
    }

    private void addmyMenu() {// 添加主菜單、快捷菜單、對話框
        JMenuBar menubar = new JMenuBar(); // 菜單欄
        this.setJMenuBar(menubar); // 添加菜單欄
        String menustr[] = { "文件", "編輯", "工具", "幫助" };
        JMenu menu[] = new JMenu[menustr.length];
        for (int i = 0; i < menustr.length; i++) {
            menu[i] = new JMenu(menustr[i]); // 菜單
            menubar.add(menu[i]); // 菜單欄中加入菜單
        }
        ////////////////////////////////
        JMenuItem menuitem_open = new JMenuItem("打開");
        menu[0].add(menuitem_open);
        menuitem_open.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                JFileChooser filechooser = new JFileChooser();
                int result = filechooser.showOpenDialog(TextEditBox.this);
                if (result == JFileChooser.APPROVE_OPTION) {
                    try {
                        File file = filechooser.getSelectedFile();
                        FileReader fr = new FileReader(file);
                        BufferedReader br = new BufferedReader(fr);
                        ta.setText("");
                        String text;
                        while ((text = br.readLine()) != null) {
                            ta.append(text);
                        }
                        fr.close();
                        br.close();
                    } catch (Exception ex) {
                        JOptionPane.showMessageDialog(TextEditBox.this,"打開文檔出錯！");
                    }
                }
            }
        });
        JMenuItem menuitem_save = new JMenuItem("保存");
        menu[0].add(menuitem_save);
        menuitem_save.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                JFileChooser filechooser = new JFileChooser();
                int result = filechooser.showSaveDialog(TextEditBox.this);
                if (result == JFileChooser.APPROVE_OPTION) {
                    try {
                        File file = filechooser.getSelectedFile();
                        FileWriter fw = new FileWriter(file);
                        BufferedWriter bw = new BufferedWriter(fw);
                        String text=ta.getText();
                        fw.write(text);
                        fw.close();
                        bw.close();
                    } catch (Exception ex) {
                        JOptionPane.showMessageDialog(TextEditBox.this,"打開文檔出錯！");
                    }
                }

            }
        });
        menu[0].addSeparator(); // 加分隔線
        JMenuItem menuitem_exit = new JMenuItem("退出");
        menu[0].add(menuitem_exit);
        menuitem_exit.addActionListener(new ActionListener() {// 退出
                    public void actionPerformed(ActionEvent e) {
                        System.exit(0);
                    }
                });
        /////////////////////////////
        JMenu menu_style = new JMenu("字形");
        JCheckBoxMenuItem checkboxmenuitem_bold = new JCheckBoxMenuItem("粗體");
        menu_style.add(checkboxmenuitem_bold);
        JCheckBoxMenuItem checkboxmenuitem_italic = new JCheckBoxMenuItem("斜體");
        menu_style.add(checkboxmenuitem_italic);
        menu[1].add(menu_style); // 菜單加入到菜單中成為二級菜單
        checkboxmenuitem_bold.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String fontname = (String)combox_name.getSelectedItem();//獲得字體名
                Font font = ta.getFont();     //獲得文本區的當前字體對象
                int style = font.getStyle();      //獲得字形
                int size = font.getSize();
                style = style ^ 1;
                ta.setFont(new Font(fontname, style, size));
            }
        });

        checkboxmenuitem_italic.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String fontname = (String)combox_name.getSelectedItem();//獲得字體名
                Font font = ta.getFont();     //獲得文本區的當前字體對象
                int style = font.getStyle();      //獲得字形
                int size = font.getSize();
                style = style ^ 2;
                ta.setFont(new Font(fontname, style, size));
            }
        });
        ////////////////////////////
        JMenu menu_color = new JMenu("顏色");
        menu[1].add(menu_color);
        ButtonGroup buttongroup = new ButtonGroup();
        String colorstr[] = { "紅", "綠", "藍" };
        JRadioButtonMenuItem rbmi_color[] = new JRadioButtonMenuItem[colorstr.length];
        for (int i = 0; i < rbmi_color.length; i++) {
            rbmi_color[i] = new JRadioButtonMenuItem(colorstr[i]); // 單選菜單項
            buttongroup.add(rbmi_color[i]);
            menu_color.add(rbmi_color[i]);
        }
        rbmi_color[0].addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                ta.setForeground(Color.red);
            }
        });
        rbmi_color[1].addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                ta.setForeground(Color.green);
            }
        });
        rbmi_color[2].addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                ta.setForeground(Color.blue);
            }
        });
        /////////////////////////////////
        JMenuItem menuitem_countwordsnum = new JMenuItem("字數統計");
        menu[2].add(menuitem_countwordsnum);
        menuitem_countwordsnum.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                int count=0;
                for(int i=0;i<ta.getText().length();i++){
                    if(!ta.getText().substring(i,i+1).equals(" ")){
                        count++;
                    }
                }
                JOptionPane.showMessageDialog(TextEditBox.this, "文本框中一共有"+count+"個字符！");
            }
        });
        menu[2].addSeparator(); // 加分隔線
        JMenuItem menuitem_search = new JMenuItem("查找");
        menu[2].add(menuitem_search);
        menuitem_search.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                new MessageJDialog();

                button_next.addActionListener(new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                        String str_search=tf_search.getText();
                        int len = str_search.length();
                        for (int i = key; i < ta.getText().length() - len + 1; i++) {
                            String str_record = ta.getText().substring(i, i + len);
                            if (str_record.equals(str_search)) {
                                key = i + 1;
                                ta.requestFocus();
                                ta.select(i, i + len);
                                return;
                            }
                        }
                    }
                });

                key=0;
            }
        });
        JMenuItem menuitem_replace = new JMenuItem("替換");
        menu[2].add(menuitem_replace);
        menuitem_replace.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String str_replace=JOptionPane.showInputDialog(TextEditBox.this,
                        "請輸入你要替換的字符串:" );
                String str_replacelater=JOptionPane.showInputDialog(TextEditBox.this,
                        "請輸入你要用來替換的內容:" );
                int len=str_replace.length();
                for(int i=0;i<ta.getText().length()-len+1;i++){
                    String str_record=ta.getText().substring(i, i+len);
                    if(str_record.equals(str_replace)){
                        ta.replaceRange(str_replacelater,i, i+len);
                    }
                }
            }
        });
        /////////////////////////////////
        JMenuItem menuitem_about = new JMenuItem("關於");
        menu[3].add(menuitem_about);
        menuitem_about.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                JOptionPane.showMessageDialog(TextEditBox.this,"文本編輯器v1.0   開發者：hhtx");
            }
        });
        ////////////////////////////////////////////////// 快捷菜單對象
        popupmenu = new JPopupMenu();
        String menuitemstr[] = { "剪切", "復制", "粘貼" };
        JMenuItem popmenuitem[] = new JMenuItem[menuitemstr.length];
        for (int i = 0; i < popmenuitem.length; i++) {
            popmenuitem[i] = new JMenuItem(menuitemstr[i]);// 菜單項
            popupmenu.add(popmenuitem[i]);// 快捷菜單加入菜單項
        }
        popmenuitem[0].setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X,
                InputEvent.CTRL_MASK));// 設置快捷鍵Ctrl+X
        popmenuitem[1].setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,
                InputEvent.CTRL_MASK));// 設置快捷鍵Ctrl+C
        popmenuitem[2].setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V,
                InputEvent.CTRL_MASK));// 設置快捷鍵Ctrl+V

        popmenuitem[0].addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                ta.cut(); //將選中文本剪切送系統剪貼板
            }
        });
        popmenuitem[1].addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                ta.copy(); //將選中文本復制送系統剪貼板
            }
        });
        popmenuitem[2].addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                ta.paste();//剪貼板的文本粘貼在當前位置
            }
        });
        ta.add(popupmenu); // 文本區添加快捷菜單
    }

    //
    private class MessageJDialog extends JDialog {
        private JLabel lable_tip;
        private JPanel panel_next = new JPanel();
        private JPanel panel_search = new JPanel();
        private JPanel panel_tip = new JPanel();

        public MessageJDialog() {
            super(TextEditBox.this, "查找");
            this.setSize(300, 170);
            this.setLocation(TextEditBox.this.getX() + 200,
                    TextEditBox.this.getY() + 200);
            this.setLayout(new GridLayout(3, 1));
            //
            ImageIcon imageIcon = new ImageIcon("img/search.png");
            lable_tip = new JLabel("請輸入你要查找的字符串：", imageIcon, JLabel.LEFT);
            panel_tip.add(lable_tip);
            this.add(panel_tip);
            tf_search = new JTextField(20);
            panel_search.add(tf_search);
            this.add(panel_search);
            button_next = new JButton("查找下一個");
            panel_next.add(button_next);
            this.add(panel_next);
            this.setVisible(true);
        }
    }

    public static void main(String args[]) {
        new TextEditBox("文本編輯器v1.0");
    }
}

 

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