public class W3D_HelpContext extends JFrame
//implements ActionListener // Listener
{
JEditorPane html;
private static final int TFSPX=0;//window starts position
private static final int TFSPY=0;
private static final int TFDX=640;//window dimensions
private static final int TFDY=480;
private static final String []topics=
{"begining",
"tutorial",
"troubleshooting",
"PTL"};
public W3D_HelpContext (int id)
{
super("Help");
setBounds(TFSPX,TFSPY,TFDX,TFDY);
try {
URL url = null;
String path = null;
try {
path = "HELP/";
if(id>=0&&id<100)path+=topics[id];
else path+="index";
path+=".html";
url = getClass().getResource(path);
} catch (Exception e) {
if(W3D_C.debug){System.out.println("Failed to open " + path);}
url = null;
}
if(url != null) {
html = new JEditorPane(url);
html.setEditable(false);
html.addHyperlinkListener(createHyperLinkListener());
JScrollPane scroller = new JScrollPane();
JViewport vp = scroller.getViewport();
vp.add(html);
getContentPane().add(scroller, BorderLayout.CENTER);
}
} catch (MalformedURLException e) {
if(W3D_C.debug){System.out.println("Malformed URL: " + e);}
} catch (IOException e) {
if(W3D_C.debug){System.out.println("IOException: " + e);}
}
pack();
setSize(TFDX,TFDY);
setVisible(true);
setResizable(false);
}
public HyperlinkListener createHyperLinkListener()
{
return new HyperlinkListener() {
public void hyperlinkUpdate(HyperlinkEvent e) {
if(e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
if(e instanceof HTMLFrameHyperlinkEvent)
{
((HTMLDocument)html.getDocument()).processHTMLFrameHyperlinkEvent(
(HTMLFrameHyperlinkEvent)e);
} else {
try {
html.setPage(e.getURL());
} catch (IOException ioe)
{
if(W3D_C.debug){System.out.println("IOE: " + ioe);}
}
}
}
}
};
}
}
[java] Back and Home Buttons - any suggestions,some one?
Author
In my App I have html file viewer that gives to user ability of context help about the programm
The problem is:
if the page have back or home link - no problem to return via this link
but if page dont contents those links such as javadoc generated documentation for example or if I need return to index page then only closing frame helps
this is the actual code.
May be some link onclick listener posible here or some way to remember where I am what the curent page?Or may be to implement onkeylistener and respond let say on key H (home) and jump to index page?
But more appreciate way is to return to previous page method!
Your suggestions wellcomed and appreciated :)
[Edited by - HellCreator on February 22, 2005 3:50:46 AM]
This topic is closed to new replies.
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