The problem seems to be solved. I used nsIWebBrowserFocus' methods
activate() and deactivate() and nsIWebBrowserChrome's focusNextElement()
and focusPrevElement() - that was enough for me. The only problem I met
was a bug in Mozilla code: browser gets focus back to itself after
calling focusNextElement() or focusPrevElement() - thanks to the comment
in SWT AbstractMozillaBrowser.java code I was able to resolve it
quickly. This is solved by handling these events asynchronously.
The next thing I'm going to implement is printing browser content, will
write a separate message later.
Thanks,
Artem
Niky Williams wrote:
Artem Ananiev wrote:
I'm embedding a Firefox browser into my Java application using
JavaXPCOM/Xulrunner, Win32 (Linux will be later and I suspect there
are a lot of problems there too...)
The next thing I want to make work is key events and focus handling. I
have found the following methods and interfaces related:
nsIWebBrowserChromeFocus.focusNextElement() - called by embedded
browser when focus is tabbed out from it in forward direction. This
interface must be implemented by embedder (by myself)
nsIWebBrowserChromeFocus.focusPrevElement() - the same as above but in
backward direction
nsIWebBrowserFocus - this interface can be obtainer from nsIWebBrowser
instance via queryInterface
nsIWebBrowserFocus.activate() - according to specification, this
method must be called when my top-level window (where the browser is
embedded within) is activated and the browser had focus when the
window was previously deactivated. However, it seems that this method
should be called each time I want the browser to get focus, not only
when the top-level window is activated. Is it right?
nsIWebBrowserFocus.deactivate() - opposite to the previous one
nsIWebBrowserFocus.setFocusAtFirstElement() - can be used by embedding
application to set focus at the first focusable element in embedded
browser. It seems that I need to call activate() before this method
nsIWebBrowserFocus.setFocusAtLastElement() - the same as the previous
one but for the last element
nsIDomEventListener.handleEvent() for event type "focus" - I'm not
sure but it seems that this event is sent by browser when it wants to
get focus. In event handler for this event I call activate() method in
nsIWebBrowser and it works, but... This "focus" event is sent, for
example, each time I click the browser by mouse, event if the browser
has already gained focus. Is it an intended behaviour or I should call
something else than activate()?
There are some other methods, I don't know when and why they are called:
nsIEmbeddingSiteWindow.setFocus()
nsIBaseWindow.setFocus()
Also, it would be fine to get some events when the browser is losing
focus like WM_FILLFOCUS in Win32.
Thanks in advance,
Artem
Artem,
In my application, when I create the web browser and the chrome, I make
it visible, then Activate () the web browser (via
nsIWebBrowserFocus)...that's about it. It seems to behave correctly for
me. I don't really mess with the other methods. I do have some code in
here that I react to the WM_ACTIVATE windows message (I reactivate the
web browser)...but I don't know if that is even needed or not. Wish I
could be more help :(
Nik Williams
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