RFR: 8200224: Multiple press event when JFXPanel gains focus

[Kevin Rushforth]

On Tue, 29 Oct 2019 14:45:46 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> On Tue, 29 Oct 2019 11:27:35 GMT, Florian Kirmaier <github.com+6547435+FlorianKirmaier at openjdk.org> wrote:
> 
>> Original PR: https://github.com/javafxports/openjdk-jfx/pull/591
>> 
>> A side effect of JDK-8200224 is, that the first click on a JFXPanel is always a double click.
>> The cause for JDK-8200224 is the fix for JDK-8087914 (Clicking on Menu in JFXPanel ignored if another swing component has focus).
>> This fix introduced synthesized press-events, which is an unsafe fix for the problem.
>> 
>> The pull request introduces a new fix for the problem.
>> Instead of simulating new input-events, we set JavaFX Scene/Window to focused.
>> We do so, by using setFocused.
>> When the original Swing-Focus event is called slightly later, it won't have any side-effects,
>> because calling setFocused just sets the value of a boolean property.
>> 
>> I've now also added a unit-test for the problem.
>> 
>> ----------------
>> 
>> Commits:
>>  - 314e423c: JDK-8200224
>>  - 725e5fef: JDK-8200224
>> 
>> Changes: https://git.openjdk.java.net/jfx/pull/25/files
>>  Webrev: https://webrevs.openjdk.java.net/jfx/25/webrev.00
>>   Issue: https://bugs.openjdk.java.net/browse/JDK-8200224
>>   Stats: 140 lines in 2 files changed: 133 ins; 2 del; 5 mod
>>   Patch: https://git.openjdk.java.net/jfx/pull/25.diff
>>   Fetch: git fetch https://git.openjdk.java.net/jfx pull/25/head:pull/25
> 
> @FlorianKirmaier you still need to file a JBS issue to associate your GitHub username with your OpenJDK user ID as noted [above](#issuecomment-546883472), and per the instructions in [this message](https://mail.openjdk.java.net/pipermail/openjfx-dev/2019-September/023558.html) sent to openjfx-dev.

@prsadhuk please review this. I will also review it (this will need two reviewers).

PR: https://git.openjdk.java.net/jfx/pull/25