<AWT Dev> [8] Request for review: 7166296 closed/java/awt/Frame/DisabledParentOfToplevel/DisabledParentOfToplevel.html failed since 1.8.0b36

Anthony Petrov anthony.petrov at oracle.com
Wed Apr 24 02:53:43 PDT 2013

Hi Sergey,

This second version of the fix looks much better. A couple of comments:

>  189         final Container parent = SunToolkit.getNativeContainer(target);

I still suggest to avoid using the word "parent" wherever possible. And 
in this particular case we know exactly that we're requesting a 
container here. Please rename this variable.

>  773     WComponentPeer getNativeParent(){

I suggest to add a comment above this method stating that we use the 
term "parent" explicitly because we override the method in top-level 
window peer implementations.

Otherwise the fix looks fine to me. Thank you.

best regards,

On 04/23/2013 08:51 PM, Sergey Bylokhov wrote:
> On 23.04.2013 17:23, Anthony Petrov wrote:
>> Indeed, it does. But in e.g. AwtButton::Create() it uses the same
>> thing as a container. This code is ugly, and the
>> Toolkit/Component.getNativeContainer() is named incorrectly.
>> I see that this erroneous pattern comes from the Windows
>> implementation, but it doesn't make any sense on any of other
>> platforms because they do make a clear distinction between owners and
>> containers and use completely different APIs/concepts to set them. So
>> I'd try and get rid of the pattern. I think we should investigate all
>> use cases (~15 in JDK) and see whether we can rework them to something
>> meaningful.
>> I believe that in most cases a get*Container() method must really
>> return a container belonging to the same top-level window only. And in
>> cases where we do want to get an owner of a window, we must use the
>> Window.getParent() explicitly. I think the latter is only really
>> needed when we create a native window, actually.
> But somewhere it is necessary to do check of the type.
>   - Like in the first version of the fix:
>          XComponentPeer/XWindowPeer.getContainerPeer()
>   - Or something like this:
> http://cr.openjdk.java.net/~serb/7166296/webrev.01/
>          WComponentPeer/WWindowPeer.getNativeParent
>   - Or I can rename this method from getNativeContainer to
> getNativeParent, and add new getNativeContainer method with correct
> implementation.
> Note that in xawt/lwawt getNativeContainer is used only once.

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