RFR: 8317116: Provide layouts for multiple test UI in PassFailJFrame [v2]

[Alexey Ivanov]

On Fri, 27 Sep 2024 14:28:15 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

>> If you call `.position(PassFailJFrame.Position.TOP_LEFT_CORNER)` after `.positionTestUIRightRow`, it is respected.
>
>> Should we provide a way to place instruction frame in arbitrary location on screen?
> 
> You can do it by using the `InstructionUI` interface that's passed to you when you implement a custom layout.
> 
> We're still trying to encapsulate the frame that hosts the instructions… if it's exposed, then the test developer can do whatever they want… yet then they have to ensure calling methods on that frame from EDT.
> 
> I'd rather not expose the frame at this time.
> 
> How often does one need to position the instructions at an arbitrary location on the screen? The `TOP_LEFT_CORNER` position is used by 6 tests only.

With the instruction frame exposed, it would be possible to create owned modeless `JDialog` or `Dialog` instead of `JFrame` and `Frame` which has a great benefit: all the windows are brought to the top when you switch back to the test from another application. And there's only a single window on the taskbar for the test.

I've been thinking about adding helper methods `createOwnedJDialog` and `createOwnedDialog` to cover this use case.

Currently, it's possible to host test UI in a modeless dialog if you use `testUI` with `PanelCreator` that is pass a method which creates `JComponent`. I admit I like navigating the UI much easier in this case.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/21207#discussion_r1778741079