用JDIC写浏览器

 

package com.waysame;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;

import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.JToolBar;
import javax.swing.SwingConstants;
import javax.swing.ToolTipManager;
import javax.swing.UIManager;
import javax.swing.border.EmptyBorder;
import javax.swing.border.EtchedBorder;

import org.jdesktop.jdic.browser.WebBrowser;
import org.jdesktop.jdic.browser.WebBrowserEvent;
import org.jdesktop.jdic.browser.WebBrowserListener;


public class WaySameBrowser extends JPanel{
	public static ImageIcon browseIcon = new ImageIcon(
	        WaySameBrowser.class.getResource("images/Right.gif"));

	BorderLayout borderLayout1 = new BorderLayout();
	JToolBar jBrowserToolBar = new JToolBar();
	JButton jStopButton = new JButton("停止",
	            new ImageIcon(getClass().getResource("images/Stop.png")));
	JButton jRefreshButton = new JButton("刷新",
	            new ImageIcon(getClass().getResource("images/Reload.png")));
	JButton jForwardButton = new JButton("前进",
	            new ImageIcon(getClass().getResource("images/Forward.gif")));
	JButton jBackButton = new JButton("后退",
	            new ImageIcon(getClass().getResource("images/Back.gif")));
	JPanel jAddressPanel = new JPanel();
	JLabel jAddressLabel = new JLabel();
	JTextField jAddressTextField = new JTextField();
	JButton jGoButton = new JButton();
	JPanel jAddrToolBarPanel = new JPanel();
	MyStatusBar statusBar = new MyStatusBar();
	JPanel jBrowserPanel = new JPanel();
	WebBrowser webBrowser;

    public WaySameBrowser() {
        try {
            jbInit();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void jbInit() {
    	this.setLayout(borderLayout1);
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        this.setPreferredSize(new Dimension(screenSize.width * 9 / 10,
                screenSize.height * 8 / 10));
        ToolTipManager.sharedInstance().setLightWeightPopupEnabled(false);
        jAddressLabel.setBorder(BorderFactory.createEmptyBorder(0, 4, 0, 4));
        jAddressLabel.setToolTipText("");
        jAddressLabel.setText(" 地址: ");
        jGoButton.setBorder(BorderFactory.createCompoundBorder(new EmptyBorder(0,
                2, 0, 2), new EtchedBorder()));
        jGoButton.setMaximumSize(new Dimension(60, 25));
        jGoButton.setMinimumSize(new Dimension(60, 25));
        jGoButton.setPreferredSize(new Dimension(60, 25));
        jGoButton.setToolTipText("Load the given URL");
        jGoButton.setIcon(browseIcon);
        jGoButton.setText("GO");
        jGoButton.addActionListener(new Browser_jGoButton_actionAdapter(this));
        jAddressPanel.setLayout(new BorderLayout());

        jAddressTextField.addActionListener(new Browser_jAddressTextField_actionAdapter(this));
        jBackButton.setToolTipText("Go back one page");
        jBackButton.setHorizontalTextPosition(SwingConstants.TRAILING);
        jBackButton.setEnabled(false);
        jBackButton.setMaximumSize(new Dimension(75, 27));
        jBackButton.setPreferredSize(new Dimension(75, 27));
        jBackButton.addActionListener(new Browser_jBackButton_actionAdapter(this));
        jForwardButton.setToolTipText("Go forward one page");
        jForwardButton.setHorizontalTextPosition(SwingConstants.TRAILING);
        jForwardButton.setEnabled(false);
        jForwardButton.addActionListener(new Browser_jForwardButton_actionAdapter(this));
        jRefreshButton.setToolTipText("Reload current page");
        jRefreshButton.setEnabled(true);
        jRefreshButton.setMaximumSize(new Dimension(75, 27));
        jRefreshButton.setMinimumSize(new Dimension(75, 27));
        jRefreshButton.setPreferredSize(new Dimension(75, 27));
        jRefreshButton.addActionListener(new Browser_jRefreshButton_actionAdapter(this));
        jStopButton.setToolTipText("Stop loading this page");
        jStopButton.setVerifyInputWhenFocusTarget(true);
        jStopButton.setText("停止");
        jStopButton.setEnabled(true);
        jStopButton.setMaximumSize(new Dimension(75, 27));
        jStopButton.setMinimumSize(new Dimension(75, 27));
        jStopButton.setPreferredSize(new Dimension(75, 27));
        jStopButton.addActionListener(new Browser_jStopButton_actionAdapter(this));
        jAddressPanel.add(jAddressLabel, BorderLayout.WEST);
        jAddressPanel.add(jAddressTextField, BorderLayout.CENTER);
        jAddressPanel.add(jGoButton, BorderLayout.EAST);
        jAddressPanel.setBorder(BorderFactory.createCompoundBorder(
            BorderFactory.createEtchedBorder(),
            BorderFactory.createEmptyBorder(2, 0, 2, 0)));

        jBrowserToolBar.setFloatable(false);
        jBrowserToolBar.add(jBackButton, null);
        jBrowserToolBar.add(jForwardButton, null);
        jBrowserToolBar.addSeparator();
        jBrowserToolBar.add(jRefreshButton, null);
        jBrowserToolBar.add(jStopButton, null);
        jBrowserToolBar.setBorder(BorderFactory.createCompoundBorder(
            BorderFactory.createEtchedBorder(),
            BorderFactory.createEmptyBorder(2, 2, 2, 0)));

        jAddrToolBarPanel.setLayout(new BorderLayout());
        jAddrToolBarPanel.add(jAddressPanel, BorderLayout.CENTER);
        jAddrToolBarPanel.add(jBrowserToolBar, BorderLayout.WEST);
        jAddrToolBarPanel.setBorder(BorderFactory.createEmptyBorder(0, 0, 2, 0));

        statusBar.setBorder(BorderFactory.createEmptyBorder(2, 0, 0, 0));
        statusBar.lblDesc.setText("同道中人 - 浏览器");

        try {
            webBrowser = new WebBrowser(new URL("http://www.baidu.com"));
            // Print out debug messages in the command line.
            //webBrowser.setDebug(true);
        } catch (MalformedURLException e) {
            System.out.println(e.getMessage());
            return;
        }

        webBrowser.addWebBrowserListener(new WebBrowserListener(){
        	//文件加载完成时
			public void documentCompleted(WebBrowserEvent arg0) {
				updateStatusInfo("文件加载完成.");
			}
			public void downloadCompleted(WebBrowserEvent arg0) {
				jBackButton.setEnabled(webBrowser.isBackEnabled());
				jForwardButton.setEnabled(webBrowser.isForwardEnabled());
				updateStatusInfo("下载加载完成.");
				
				URL currentURL = webBrowser.getURL();
				if(currentURL != null){
					jAddressTextField.setText(currentURL.toString());
				}
			}
			public void downloadError(WebBrowserEvent arg0) {
				updateStatusInfo("加载错误.");
			}
			public void downloadProgress(WebBrowserEvent arg0) {
				updateStatusInfo("加载进程中.");
			}
			//下载操作开始时
			public void downloadStarted(WebBrowserEvent arg0) {
				updateStatusInfo("加载开始.");
			}
			
			public void initializationCompleted(WebBrowserEvent arg0) {	
				updateStatusInfo("初始化完成后.");
			}
			public void statusTextChange(WebBrowserEvent arg0) {	
				updateStatusInfo("改变状态栏文本.");
			}
			public void titleChange(WebBrowserEvent arg0) {
				updateStatusInfo("文档标题改变.");
			}
        	
        });
		
        jBrowserPanel.setLayout(new BorderLayout());
        jBrowserPanel.add(webBrowser, BorderLayout.CENTER);

        this.add(jAddrToolBarPanel, BorderLayout.NORTH);
        this.add(statusBar, BorderLayout.SOUTH);
        this.add(jBrowserPanel, BorderLayout.CENTER);
	}

    void loadURL() {
        String inputValue = jAddressTextField.getText();

        if (inputValue == null) {
            JOptionPane.showMessageDialog(this, "The given URL is NULL:",
                    "Warning", JOptionPane.WARNING_MESSAGE);
        } else {
            // Check if the text value is a URL string.
            URL curUrl = null;

            try {
                // Check if the input string is a local path by checking if it starts
                // with a driver name(on Windows) or root path(on Unix).               
                File[] roots = File.listRoots();

                for (int i = 0; i < roots.length; i++) {
                    if (inputValue.toLowerCase().startsWith(roots[i].toString().toLowerCase())) {
                        File curLocalFile = new File(inputValue);

                        curUrl = curLocalFile.toURL();
                        break;
                    }
                }

                if (curUrl == null) {
                    // Check if the text value is a valid URL.
                    try {
                        curUrl = new URL(inputValue);
                    } catch (MalformedURLException e) {
                            if (inputValue.toLowerCase().startsWith("ftp.")) {
                                curUrl = new URL("ftp://" + inputValue);
                            } else if (inputValue.toLowerCase().startsWith("gopher.")) {
                                curUrl = new URL("gopher://" + inputValue);
                            } else {
                                curUrl = new URL("http://" + inputValue);
                            }
                    }
                }
                            
                webBrowser.setURL(curUrl);

                // Update the address text field, statusbar, and toolbar info.
                updateStatusInfo("Loading " + curUrl.toString() + " ......");

            } catch (MalformedURLException mue) {
                JOptionPane.showMessageDialog(this,
                    "The given URL is not valid:" + inputValue, "Warning",
                    JOptionPane.WARNING_MESSAGE);
            }                
        }
    }

    void jGoButton_actionPerformed(ActionEvent e) {
        loadURL();
    }

    void jAddressTextField_actionPerformed(ActionEvent e) {
        loadURL();
    }

    void jBackButton_actionPerformed(ActionEvent e) {
        webBrowser.back();
    }

    void jForwardButton_actionPerformed(ActionEvent e) {
        webBrowser.forward();
    }

    void jRefreshButton_actionPerformed(ActionEvent e) {
        webBrowser.refresh();
    }

    void jStopButton_actionPerformed(ActionEvent e) {
        webBrowser.stop();
    }
    
	public static void main(String[] args) {
        JFrame frame = new JFrame("同道中人 - 浏览器");
        Container contentPane = frame.getContentPane();
        contentPane.setLayout(new GridLayout(1, 1));
        contentPane.add(new WaySameBrowser());
        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        frame.pack();
        frame.setVisible(true);
    }

	void updateStatusInfo(String statusMessage) {
		statusBar.lblStatus.setText(statusMessage);
	}
}



class Browser_jAddressTextField_actionAdapter implements java.awt.event.ActionListener {
	WaySameBrowser adaptee;

    Browser_jAddressTextField_actionAdapter(WaySameBrowser adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jAddressTextField_actionPerformed(e);
    }
}


class Browser_jBackButton_actionAdapter implements java.awt.event.ActionListener {
	WaySameBrowser adaptee;

    Browser_jBackButton_actionAdapter(WaySameBrowser adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jBackButton_actionPerformed(e);
    }
}


class Browser_jForwardButton_actionAdapter implements java.awt.event.ActionListener {
	WaySameBrowser adaptee;

    Browser_jForwardButton_actionAdapter(WaySameBrowser adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jForwardButton_actionPerformed(e);
    }
}


class Browser_jRefreshButton_actionAdapter implements java.awt.event.ActionListener {
	WaySameBrowser adaptee;

    Browser_jRefreshButton_actionAdapter(WaySameBrowser adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jRefreshButton_actionPerformed(e);
    }
}


class Browser_jStopButton_actionAdapter implements java.awt.event.ActionListener {
	WaySameBrowser adaptee;

    Browser_jStopButton_actionAdapter(WaySameBrowser adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jStopButton_actionPerformed(e);
    }
}


class Browser_jGoButton_actionAdapter implements java.awt.event.ActionListener {
	WaySameBrowser adaptee;

    Browser_jGoButton_actionAdapter(WaySameBrowser adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jGoButton_actionPerformed(e);
    }
}

 

package com.waysame;

import java.awt.Dimension;
import java.awt.Toolkit;

import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingConstants;

public class MyStatusBar extends Box{
	public JLabel lblStatus;
	public JLabel lblDesc;
	public MyStatusBar(){
		super(BoxLayout.X_AXIS);
		Toolkit kit = Toolkit.getDefaultToolkit();
        Dimension screenSize = kit.getScreenSize();

        lblStatus = new JLabel("状态:", SwingConstants.LEADING);
        lblStatus.setPreferredSize(new Dimension((int) (0.7 * screenSize.width),22));
        lblStatus.setBorder(BorderFactory.createLoweredBevelBorder());
        this.add(lblStatus, null);

        lblDesc = new JLabel("描述:", SwingConstants.LEADING);
        lblDesc.setPreferredSize(new Dimension((int) (0.3 * screenSize.width),22));
        lblDesc.setBorder(BorderFactory.createLoweredBevelBorder());
        this.add(lblDesc, null);
	}
}