webwindow.java

JAVA图形用户界面设计与实例+(源代码)

//WebWindow.java
// Text field which displays the HTML documents
// Extends a JEditorPane in order to make use of Swings HTML components


import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.html.*;
import java.awt.*;
import java.io.*;

public class WebWindow extends JScrollPane implements HyperlinkListener{
    
    private JEditorPane je = new JEditorPane();//Private data members
    
    private BrowserFrame bfRef;//Reference to the main frame

    public WebWindow() { //Default constructor
       
        this(new BrowserFrame());
    }

    public WebWindow(BrowserFrame bf) {

        bfRef = bf;

        
        je.setEditable(false);
        setViewportView(je);
        setAutoscrolls(false);
    }
    
//****************************************************************************
    public void setCurrentURL(String sURL) throws Exception {
      
       try {
            je = new JEditorPane(sURL);
            je.setEditable(false);
            setViewportView(je);
            je.addHyperlinkListener(this);
        }

        catch(Exception e) {
            throw new Exception("有些小错误！去不了你想去的地方！^_^");
        }
    }


//*****************************************************************************
         
    public void hyperlinkUpdate(HyperlinkEvent evt) {
    	//hyperlink events - clicks on links
    	//暂时只支持这项功能
        if (evt.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
            bfRef.setCurrentURL(evt.getURL().toString());
        }
    }
}