[OpenJDK 2D-Dev] [9] RFR: JDK-8154057, , [macosx] getPrintJob doesn't throw NPE if Frame is null AND type is COMMON

[prasanta sadhukhan]

Thanks for the review. I have filed a new issue for this non-usage of frame
https://bugs.openjdk.java.net/browse/JDK-8154218

Regards
Prasanta
On 4/13/2016 9:29 PM, Philip Race wrote:
> Ok, so +1 to this fix but file a new bug to track the non-usage of the 
> owner frame.
>
> -phil.
>
> On 4/13/16, 1:13 AM, prasanta sadhukhan wrote:
>> Hi Phil,
>>
>> Yes, it seems code does not use this frame as parent/owner.
>> Actually, xxxToolkit will call initPrintJob2D() after checking for 
>> frame==null, followed by PrintJob2D.printDialog() which will just 
>> store the frame in the attribute
>> if (frame != null) {
>>              attributes.add(new DialogOwner(frame));
>>          }
>> and then call ServiceUI.printDialog()
>> which just pass null as owner to ServiceDialog() for now.
>>
>> // For now we set owner to null. In the future, it may be passed
>>         // as an argument.
>>         Window owner = null;
>>
>> dialog = new ServiceDialog(gc,
>>                                        x,
>>                                        y,
>>                                        services, defaultIndex,
>>                                        flavor, attributes,
>>                                        (Dialog)owner);
>> and so this behaviour is common to all platforms.
>>
>> I guess we should populate WIndow owner with this frame object.
>>
>> But since this NPE problem is specific to mac,can we fix this bug first
>> as the other platforms has same null check code in 
>> Toolkit.getPrintJob() and create another bug for this frame usage. 
>> Please let me know your thoughts.
>>
>> BTW,
>> It was not seen (ie NPE is thrown) for native dialog in mac as in 
>> initPrintJob2D() we have this check
>> if (frame == null &&
>>             (jobAttributes == null ||
>>              jobAttributes.getDialog() == DialogType.NATIVE)) {
>>             throw new NullPointerException("Frame must not be null");
>>         }
>>
>> Regards
>> Prasanta
>> On 4/12/2016 10:43 PM, Phil Race wrote:
>>> hmm .. if it does not throw NPE when the dialog type is common that 
>>> could mean
>>> that the code is not referencing the frame as a modal parent /owner 
>>> in that case which could
>>> be another bug.
>>> Did you check into how this is used relative to other platforms ?
>>>
>>> -phil.
>>>
>>>
>>> On 04/12/2016 04:16 AM, prasanta sadhukhan wrote:
>>>> Hi All,
>>>>
>>>> Please review a fix for jdk9.
>>>> Bug: https://bugs.openjdk.java.net/browse/JDK-8154057
>>>> webrev: http://cr.openjdk.java.net/~psadhukhan/8154057/webrev.00/
>>>>
>>>> As per spec, Toolkit.getPrintJob() should throw NPE if null frame 
>>>> object is passed to it.
>>>> But on macos, it seems getPrintJob() does not check for null frame 
>>>> and show the print dialog.
>>>>
>>>> Fix is to check for null frame which is same as what we do in 
>>>> windows (WToolkit) and linux (XToolkit).
>>>>
>>>> Regards
>>>> Prasanta
>>>
>>