simpleeditor.java

本代码以J2SE 5.0为开发环境

package book.gui;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

import javax.swing.ImageIcon;
import javax.swing.JButton;
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.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTabbedPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.JToolBar;
import javax.swing.JTree;
import javax.swing.Timer;
import javax.swing.border.BevelBorder;
import javax.swing.event.CaretEvent;
import javax.swing.event.CaretListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import javax.swing.filechooser.FileFilter;
import javax.swing.text.BadLocationException;
import javax.swing.tree.DefaultMutableTreeNode;
/**
 * 一个简单的文本编辑器，能够编辑html、java、cpp、txt文件，
 * 并支持java的编译与运行
 */
public class SimpleEditor extends JFrame {

	/********菜单栏、菜单和菜单项*********/
	JMenuBar menuBar = new JMenuBar();
	JMenu fileMenu = new JMenu("File");
	JMenu optionMenu = new JMenu("Option");
	JMenu advanceMenu = new JMenu("Advance");
	JMenu helpMenu = new JMenu("Help");
	JMenu editMenu = new JMenu("Edit");
	JMenuItem newMenuItem = new JMenuItem("new");
	JMenuItem openMenuItem = new JMenuItem("Open");
	JMenuItem saveMenuItem = new JMenuItem("Save");
	JMenuItem exitMenuItem = new JMenuItem("exit");
	JMenuItem findMenuItem = new JMenuItem("Find");
	JMenuItem findNextMenuItem = new JMenuItem("Find Next");
	JMenuItem replaceMenuItem = new JMenuItem("Replace");
	JMenuItem compileMenuItem = new JMenuItem("Compile");
	JMenuItem buildMenuItem = new JMenuItem("Build");
	JMenuItem stopFlashMenuItem = new JMenuItem("Stop Flash");
	JMenuItem startFlashMenuItem = new JMenuItem("Start Flash");
	JMenuItem helpMenuItem = new JMenuItem("Help");
	JMenuItem copyMenuItem = new JMenuItem("Copy");
	JMenuItem cutMenuItem = new JMenuItem("Cut");
	JMenuItem pasteMenuItem = new JMenuItem("Paste");

	
	/********文件内容的显示****/
	//用多个文本域存放多个文件内容，文本域放在JScrollPane里
	//而JScrollPane放在JTabbedPane中，这就是一个多页面的布局
	
	//多个文本域，每个文本域显示一个文件的内容
	JTextArea[] fileTextAreas = new JTextArea[10];
	//编译或者运行时的控制台信息
	JTextArea consoleTextArea = new JTextArea();
	JScrollPane[] fileScrollPanes = new JScrollPane[10];
	JScrollPane consoleScrollPane;
	//多个文本域放在不同tab里
	JTabbedPane fileTabbedPane = new JTabbedPane();
	
	/**********工具栏以及工具栏上的按钮**********/
	JToolBar toolBar = new JToolBar();
	JButton openButton = new JButton(new ImageIcon(loadImage("image/open.gif")));
	JButton newButton = new JButton(new ImageIcon(loadImage("image/new.gif")));
	JButton saveButton = new JButton(new ImageIcon(loadImage("image/save.gif")));
	JButton helpButton = new JButton(new ImageIcon(loadImage("image/help.gif")));
	JButton exitButton = new JButton(new ImageIcon(loadImage("image/close.gif")));
	JButton compileButton = new JButton(new ImageIcon(loadImage("image/compile.gif")));
	JButton buildButton = new JButton(new ImageIcon(loadImage("image/build.gif")));
	JButton copyButton = new JButton(new ImageIcon(loadImage("image/copy.gif")));
	JButton cutButton = new JButton(new ImageIcon(loadImage("image/cut.gif")));
	JButton pasteButton = new JButton(new ImageIcon(loadImage("image/paste.gif")));
	
	//该文本域显示当前光标在当前文本域中的行号
	JTextArea showLineNoTextArea = new JTextArea();
	//对话框窗体，程序中所有对话框都显示在该窗体中
	JFrame dialogFrame = new JFrame();

	/*****文件名以树型结构在左边显示*******/
	JTree tree;
	DefaultMutableTreeNode root;
	DefaultMutableTreeNode[] nodes = new DefaultMutableTreeNode[10];
	
	/*******组件之间的分隔栏******/
	JSplitPane leftRightSplitPane;
	JSplitPane lineNoConsoleSplitPane;
	JSplitPane treeFlashSplitPane;
	JSplitPane tabbedLineNoSplitPane;
	
	/**********文件选择、存储相关********/
	//文件过滤器
	Filter fileFilter = new Filter();
	//文件选择器
	FileChooser fileChooser = new FileChooser();
	// 文件读写控制，0表示文件选择器读文件，1文件选择器标示写文件
	int fileChooser_control = 0;
	FileWriter fileWriter;

	// tabbedPane中tab页的当前数量
	int tb = 1;
	int find_control = 0;
	//文本域的控制器，指向当前操作的文本域
	int textAreas_control = 0;
	//当前文本域中的文本
	String currentTextInTextArea;

	//标志文件是否为新建的，如果是新建的文件，为true
	boolean[] newFileFlags = new boolean[10];
	//存放打开文件所在的目录
	String[] directory = new String[10];
	
	/********查找替换相关****/
	//正在查找的字符串及其长度
	String findWord;
	int fingWordLength;
	//保存正在查找的字符串在文本域中的文本的位置
	int findIndex;
	//被替换的文本的长度
	int replaceLength = 0;
	
	/********用于显示Flash的控制器****/
	JLabel flashLabel = new JLabel(new ImageIcon(loadImage("image/Juggler0.gif")));
	Timer timer = new Timer(100, new Act_timer());
	int timerControl = 0;

	/********帮助相关****/
	Font font = new Font("Courier", Font.TRUETYPE_FONT, 14);
	JTextArea helpTextArea = new JTextArea();
	JFrame helpFrame = new JFrame("Help");
	
	//构造函数
	public SimpleEditor() {
		super("文本编辑器");
		
		//为窗体添加键盘事件处理器
		//下面这一行非常重要，表示窗体能够接受焦点。
		//如果没有这一句，按键盘会无效。
		this.setFocusable(true);
		this.addKeyListener(new MyKeyListener());
		
		//为窗体添加窗口事件处理器
		this.addWindowListener(new WindowListener());

		//初始化
		init();
		setLocation(200, 200);
		setVisible(true);
		pack();
		//初始时启动动画
		timer.start();
	}
	
	private void init(){
		
		/*******初始化文本域、目录、树节点*********/
		for (int i = 0; i < 10; i++) {
			nodes[i] = new DefaultMutableTreeNode("File" + (i + 1));
			newFileFlags[i] = true;
			fileTextAreas[i] = new JTextArea();
			// 设置文本域中文本的字体
			fileTextAreas[i].setFont(font);
			// 为文本域的插入光标设置颜色
			fileTextAreas[i].setCaretColor(Color.yellow);
			// 设置文本域的背景和前景颜色
			fileTextAreas[i].setBackground(new Color(70, 80, 91));
			fileTextAreas[i].setForeground(Color.pink);
			// 为文本域插入光标设置事件处理器
			fileTextAreas[i].addCaretListener(new CaretLis_lineNo());
			// 为文本域键盘设置事件处理器
			fileTextAreas[i].addKeyListener(new MyKeyListener());
			directory[i] = new String("/");
			fileScrollPanes[i] = new JScrollPane(fileTextAreas[i],
					JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
					JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
		}
		root = new DefaultMutableTreeNode("正在编辑的文件");
		root.add(nodes[0]);
		tree = new JTree(root);
		tree.setEditable(false);
		tree.setForeground(new Color(200, 150, 10));
		tree.setBackground(new Color(70, 80, 91));
		
		//初始化控制台文本域
		consoleTextArea.setFont(font);
		consoleScrollPane = new JScrollPane(consoleTextArea, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
				JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
		consoleTextArea.setForeground(new Color(200, 150, 10));
		consoleTextArea.setBackground(new Color(70, 80, 91));
		consoleTextArea.addMouseListener(new MouseListener_console());
		
		//初始化显示当前光标行数的文本域
		showLineNoTextArea.setEnabled(false);
		showLineNoTextArea.setFont(font);
		showLineNoTextArea.setBackground(new Color(70, 80, 91));
		showLineNoTextArea.setDisabledTextColor(Color.yellow);

		/**************初始化菜单*************/
		//初始化菜单项
		newMenuItem.addActionListener(new Act_NewFile());
		openMenuItem.addActionListener(new Act_OpenFile());
		saveMenuItem.addActionListener(new Act_SaveFile());
		exitMenuItem.addActionListener(new Act_ExitEditor());
		findMenuItem.addActionListener(new Act_Find());
		findNextMenuItem.addActionListener(new Act_FindNext());
		replaceMenuItem.addActionListener(new Act_Replace());
		compileMenuItem.addActionListener(new Act_Compile());
		buildMenuItem.addActionListener(new Act_Build());
		helpMenuItem.addActionListener(new Act_Help());
		copyMenuItem.addActionListener(new Act_Copy());
		cutMenuItem.addActionListener(new Act_Cut());
		pasteMenuItem.addActionListener(new Act_Paste());
		stopFlashMenuItem.addActionListener(new Act_StopFlash());
		startFlashMenuItem.addActionListener(new Act_StartFlash());
		startFlashMenuItem.setEnabled(false);
		//初始化菜单
		fileMenu.add(newMenuItem);
		fileMenu.add(openMenuItem);
		fileMenu.add(saveMenuItem);
		fileMenu.add(exitMenuItem);
		optionMenu.add(findMenuItem);
		optionMenu.add(findNextMenuItem);
		optionMenu.add(replaceMenuItem);
		advanceMenu.add(compileMenuItem);
		advanceMenu.add(buildMenuItem);
		advanceMenu.addSeparator();
		advanceMenu.add(stopFlashMenuItem);
		advanceMenu.add(startFlashMenuItem);
		helpMenu.add(helpMenuItem);
		editMenu.add(copyMenuItem);
		editMenu.add(cutMenuItem);
		editMenu.add(pasteMenuItem);
		//初始化菜单栏
		menuBar.add(fileMenu);
		menuBar.add(optionMenu);
		menuBar.add(advanceMenu);
		menuBar.add(editMenu);
		menuBar.add(helpMenu);
		//将菜单栏添加到窗体中
		setJMenuBar(menuBar);
		
		/***********初始化工具栏以及按钮**********/
		//初始化按钮
		newButton.addActionListener(new Act_NewFile());
		openButton.addActionListener(new Act_OpenFile());
		saveButton.addActionListener(new Act_SaveFile());
		exitButton.addActionListener(new Act_ExitEditor());
		compileButton.addActionListener(new Act_Compile());
		buildButton.addActionListener(new Act_Build());
		helpButton.addActionListener(new Act_Help());
		copyButton.addActionListener(new Act_Copy());
		cutButton.addActionListener(new Act_Cut());
		pasteButton.addActionListener(new Act_Paste());
		// 为工具栏设置提示信息，当鼠标在工具栏按钮上停留一段时间时，会显示提示信息
		newButton.setToolTipText("New");
		openButton.setToolTipText("Open");
		saveButton.setToolTipText("Save");
		exitButton.setToolTipText("Exit");
		helpButton.setToolTipText("Help");
		compileButton.setToolTipText("Compile");
		buildButton.setToolTipText("Build");
		copyButton.setToolTipText("Copy");
		cutButton.setToolTipText("Cut");
		pasteButton.setToolTipText("Paste");
		newButton.setBorder(new BevelBorder(BevelBorder.RAISED));
		openButton.setBorder(new BevelBorder(BevelBorder.RAISED));
		saveButton.setBorder(new BevelBorder(BevelBorder.RAISED));
		exitButton.setBorder(new BevelBorder(BevelBorder.RAISED));
		helpButton.setBorder(new BevelBorder(BevelBorder.RAISED));
		compileButton.setBorder(new BevelBorder(BevelBorder.RAISED));
		buildButton.setBorder(new BevelBorder(BevelBorder.RAISED));
		cutButton.setBorder(new BevelBorder(BevelBorder.RAISED));
		copyButton.setBorder(new BevelBorder(BevelBorder.RAISED));
		pasteButton.setBorder(new BevelBorder(BevelBorder.RAISED));
		//初始化工具栏
		toolBar.add(newButton);
		toolBar.add(openButton);
		toolBar.add(saveButton);
		toolBar.add(copyButton);
		toolBar.add(cutButton);
		toolBar.add(pasteButton);
		toolBar.add(compileButton);
		toolBar.add(buildButton);
		toolBar.add(exitButton);
		toolBar.add(helpButton);

		/********初始化tab页面板和组件间的分隔栏*********/
		fileTabbedPane.addTab("File1", fileScrollPanes[0]);
		fileTabbedPane.addChangeListener(new Act_ChangeTab());
		//文件目录树和Flash之间的分隔栏
		treeFlashSplitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, true, flashLabel, tree);
		//文件文本域面板与指示光标所在行文本域面板之间的分隔栏
		tabbedLineNoSplitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, true, fileTabbedPane, showLineNoTextArea);
		//右边上2个面板与控制台面板的分隔栏
		lineNoConsoleSplitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, true, tabbedLineNoSplitPane,
				consoleScrollPane);
		//左边大面板与右边大面板之间的分隔栏
		leftRightSplitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, true, treeFlashSplitPane,
				lineNoConsoleSplitPane);
		// 设置分隔栏两边面板显示的宽度，如果分割条是左右分割，则参数表示分割条的横坐标
		// 如果分割条是上下分割，则参数表示分割条的纵坐标
		leftRightSplitPane.setDividerLocation(150);
		tabbedLineNoSplitPane.setDividerLocation(460);