RFR: 8087980: Add property to disable Monocle cursor

[Kevin Rushforth]

On Tue, 29 Oct 2019 11:31:18 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> On Tue, 29 Oct 2019 10:10:32 GMT, Dell Green <github.com+12861109+dellgreen at openjdk.org> wrote:
> 
>> On Tue, 29 Oct 2019 09:53:28 GMT, Johan Vos <jvos at openjdk.org> wrote:
>> 
>>> On Tue, 8 Oct 2019 12:03:46 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:
>>> 
>>>> On Tue, 8 Oct 2019 12:03:42 GMT, Dell Green <12861109+dellgreen at users.noreply.github.com> wrote:
>>>> 
>>>>> Often on embedded systems a cursor is not a valid input modality. On some of these systems, when the javafx toolkit initialises the native hardware cursor, it produces artefacts which can be seen on screen (in the framebuffer for example). This change adds a system property "monocle.cursor.enabled" that can disable the creation of a native cursor in each of the Monocle NativePlatform implementations in favour of a NullCursor which is a no-op implementation of the NativeCursor abstract class that all native cursors have to implement.
>>>>> 
>>>>> NullCursor class already existed and was being returned for some implementations like AndroidPlatform and HeadlessPlatform. This change builds upon that and conditionally returns NullCursor for all platforms.
>>>>> 
>>>>> A system property "monocle.debugcursor" has also been added to turn on logging of which NativeCursor has been selected when the toolkit initialises.
>>>>> 
>>>>> ----------------
>>>>> 
>>>>> Commits:
>>>>>  - cfbbc7dd: JDK-8087980: Add property to disable Monocle cursor
>>>>> 
>>>>> Changes: https://git.openjdk.java.net/jfx/pull/5/files
>>>>>  Webrev: https://webrevs.openjdk.java.net/jfx/5/webrev.00
>>>>>   Issue: https://bugs.openjdk.java.net/browse/JDK-8087980
>>>>>   Stats: 49 lines in 8 files changed: 40 ins; 0 del; 9 mod
>>>>>   Patch: https://git.openjdk.java.net/jfx/pull/5.diff
>>>>>   Fetch: git fetch https://git.openjdk.java.net/jfx pull/5/head:pull/5
>>>> 
>>>> This has not yet been reviewed. It will need at least one reviewer with a Reviewer role in the project.
>>>> 
>>>> ----------------
>>>> 
>>>> Disapproved by kcr (Lead).
>>> 
>>> Is this PR open for review now? Or will a new PR be created?
>> 
>> this is ready for review form my perspective. :)
> 
> The Skara tooling bug in question has been fixed, so yes this is ready for review.

I have no particular issue one way or the other on this. I will defer the review to @johanvos

PR: https://git.openjdk.java.net/jfx/pull/5