Java doesn't support multiple inheritance (which incidentally is what you're
after here.
To work around this limitation, it is generally useful to use delegation
instead:
class ToolbarHyperlink extends ToolbarItem implements HasClickHandlers,
HasHandlers, EventListener, HasHTML, HasText, SourcesClickEvents
{
Hyperlink itsHyperlink;
public ToolbarHyperlink(String text, String targetHistoryToken)
{
itsHyperlink = new Hyperlink(text, targetHistoryToken);
}
...
public void onBrowserEvent(Event event)
{
super.onBrowserEvent(event);
itsHyperlink.onBrowserEvent(event);
}
... etc for the other interfaces.
}
This is the "approved" method of simulating multiple inheritance in Java.
Thomas Arp
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf
Of prairie_kids
Sent: 24. oktober 2009 23:24
To: GWT-Ext Developer Forum
Subject: adding a GWT Hyperlink to a Toolbar
I'm interested in being able to add a Hyperlink to my GWT-EXT Toolbar
but Hyperlink of course has nothing to do with being derived from
ToolbarItem. Has anyone gone down this path? Essentially I want
hyperlinks in my toolbar but using Hyperlink would be nice so that I
could make use of the built-in browser history functionality.
I'm considering what I might need to do to derive from ToolbarItem but
could use some help in this.
Thanks
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