help copying to clipboard?

[Mitch B]

SmartClient Version: SC_SNAPSHOT-2012-02-23_v8.2p/Pro Deployment (built 2012-02-23)
FireFox 10.0.1

I not been able to find documentation but I have seen this notation as an acceptable/compilable approach to using JavaScript in Java code. I am attempting to use this to copy to the clipboard:

private static native JavaScriptObject copyToClipBoard(String guid)/*
if (window.clipboardData) // Internet Explorer
{
window.clipboardData.setData("Text", guid);
}
else
{
unsafeWindow.netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
const clipboardHelper = Components.classes["@mozilla.org/widget/clipboardhelper;1"].getService(Components.interfaces.nsIClipboardHelper);
clipboardHelper.copyString(guid);
}
return(copyToClipBoard);
}*/;

This compiles but causes an umbrella exception on the declaration line.

[Mitch B]

It would be very helpful to get a pointer to some documentation on the use of native code. This looks like the only solution for working with several browser specific capabilities. Suggestions would be appreciated. Thank you.

[shortpasta]

I took your code and I put it in a stand-alone test case.
When it pops up in devmode, I get this in the GWT Console:

00:18:19.856 [ERROR] Line 57: Native methods require a JavaScript implementation enclosed with /*-{ and }-*/

Which is pretty clear.

Also, window needs to be referenced via the gwt var $wnd.

So, try something like this:

private static native void copyToClipBoard (final String text) /*-{

    if ($wnd.clipboardData) {
      // Internet Explorer
      $wnd.clipboardData.setData("Text", text);
    }
    else {
      $wnd.netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
      const clipboardHelper = Components.classes["@mozilla.org/widget/clipboardhelper;1"].getService(Components.interfaces.nsIClipboardHelper);
      clipboardHelper.copyString(text);
    }
  }-*/;

But I think you will have to work on the netscape implementation a bit.

Please post your solution when you have it...