[news.eclipse.platform.swt] Re: Reuse/Extending Mozilla.java and IE.java

[Philip Chang <philip2134@xxxxxxx>]

Hi grant,

I tried now to subclass the IE class but now I get

java.lang.IllegalAccessError: class org.eclipse.swt.browser.IE2 cannot 
access its superclass org.eclipse.swt.browser.IE

What I'm doing wrong, or is it not possible to subscribe IE at all? Any 
idea?

Shortened code:
package org.eclipse.swt.browser;

public class Browser2 extends Browser {
    WebBrowser webBrowser;

public Browser2 (Composite parent, int style) {

    try {
	//IllegalAccess for .forName
        Class clazz = Class.forName ("org.eclipse.swt.browser.IE2");
        webBrowser = (WebBrowser)clazz.newInstance ();	
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    } catch (InstantiationException e) {
        e.printStackTrace();
    } catch (Throwable e) {
        e.printStackTrace();
    }
}

@Override
protected void checkSubclass() {
}

}


package org.eclipse.swt.browser;

public class IE2 extends IE {
	...
}


Regards,
Philip

Grant Gayed schrieb:
> Hi Philip,
>
> See http://www.eclipse.org/swt/faq.php#subclassing and note that there is a
> way to do it described at the bottom.
>
> If you're looking to provide additional browser functionality then an
> alternative approach would be to always use a Mozilla-based Browser and
> program to it via JavaXPCOM.  For info about using JavaXPCOM with the
> Browser see http://www.eclipse.org/swt/faq.php#howusejavaxpcom .
>
> Grant
>
>
> "Philip Chang" <philip2134@xxxxxxx> wrote in message
> news:g0tku8$i6b$1@xxxxxxxxxxxxxxxxxxxx
> > Hi,
> >
> > I want to extend the existing IE/Mozilla class because I want to add
> > some other interfaces for both browsers.
> >
> > But for doing this I figured out there is no other way than to
> > copy/paste them in my projet and compile it my self which is really bad.
> >
> > Because I have than some references to internal classes and also in the
> > case of Mozilla I have dependencies via jni to native c code (Also IE
> > but direct in IE.java itself). Some accesses are also discouraged so...
> >
> > Is there no other way than to make a copy if I want to extend but reuse
> > (yes I want to subclass) the existing code base?
> >
> > I'm aware that I cannot expect any support from eclipse than but it
> > still would be great to reuse as code as much as possible without
> > creating dependencies on too many internal classes.
> >
> > Regards,
> > Philip