[OpenJDK 2D-Dev] RFR: 8088395: Print dialogs are not blocking/modal w.r.t specified owner windows

Phil Race philip.race at oracle.com
Tue Mar 14 17:32:55 UTC 2017

I have updated webrevs described below, and also I answer your questions

FX is updated only to fix trailing white space and one modifier ordering

The JDK side has a few modifications :
(a) awt_PrintDialog.cpp and awt_PrintJob.cpp have an added safety check.
We now call ::IsWindowHandle(id) as we do elsewhere to make sure its valid.

(b) The Page Setup Dialog on Linux was not seeing the AlwaysOnTop property.
In part this was because it wasn't being checked in 
ServiceDialog.initPageDialog() - fixed
In other part it is because the attributes weren't propagated. The 
reason for this is
a bit lengthy to explain but the main thing to say is that we have an 
instance variable
attributes as well as a local variable in some places.
I didn't want to touch any code that even theoretically might affect 2D 
printing so
instead I cached the attribute as we do the owner id so it is passed on 
Thanks to Kevin for spotting this problem

On 03/14/2017 09:02 AM, Sergey Bylokhov wrote:
> Hi, Phil.
> I have only two questions:
>  - Does it mean that we do not support "ontop" property via public API 
> in idk?

There is no API for the "alwaysOnTop" AWT property for the print dialogs.
I actually don't think it can be implemented for the windows native 
print controls.
There is an internal way to make an AWT window owner for the Swing print 
but nothing public and it doesn't help here as the owner is not an AWT 

>  - Probably the name should contain «owner» instead of «parent»?, But 
> since this is not a public API I guess it is not an issue.

I suppose that is more correct. Something to address if it ever makes 
its way into API or docs.


>> This has an FX bug + webrev :
>> https://bugs.openjdk.java.net/browse/JDK-8088395
>> http://cr.openjdk.java.net/~prr/8088395/index.html 
>> <http://cr.openjdk.java.net/%7Eprr/8088395/index.html>
>> and also a JDK-side fix and webrev :-
>> https://bugs.openjdk.java.net/browse/JDK-8176530
>> http://cr.openjdk.java.net/~prr/8176350/
>> The problem is FX modal dialogs are ignoring the Window parameter.
>> We can fix the problem with disabling the modal parent on the FX side
>> and that is why most files in FX are updated.
>> But it does not fix the "on top" issue which requires the JDK fixes and
>> to pass in the DialogOnTop private attribute.
>> The JDK code is there solely for FX and won't have any visibility
>> unless FX passes in the private attribute.
>> On Linux it uses the standard AWT "always on top" modality
>> On windows it uses the HWND for the FX window and windows native modality
>> On Mac you won't see anything since Mac does this automatically
>> -phil.

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