RFR: JDK-8290469: Add new positioning options to PassFailJFrame test framework [v5]

[Harshitha Onkar]

On Fri, 5 Aug 2022 00:45:59 GMT, Harshitha Onkar <honkar at openjdk.org> wrote:

>> Additional position setting (TOP_LEFT_CORNER) and a method to obtain bounds of test instruction frame are added to PassFailJFrame to handle positioning of multiple test frames.
>> 
>> In scenarios where multiple test windows might be present, the test windows might overlap the instruction frame. In order to fix this TOP_LEFT_CORNER position option is added that positions the test instruction frame at top left corner with main test window below it.
>> 
>> Additionally `getInstructionFrameBounds()` is added to obtain the position and dimensions of test instruction frame.
>
> Harshitha Onkar has updated the pull request incrementally with one additional commit since the last revision:
> 
>   added Thread.sleep and changed the location of setVisible

Added null check for `testWindow` in `positionWindow` as the following line             `testWindow.setLocation(.....);` will produce NPE if `positionWindow` is called with `testWindow = null`. 

Additionally, some tests do not require a testWindow, for example [TrayIconScalingTest.java](https://github.com/openjdk/jdk/blob/f9bb3676e3d2c5fe0ae505d3bcbf434f7acb524f/test/jdk/java/awt/TrayIcon/TrayIconScalingTest.java#L81) in which case we can call `PassFailJFrame.positionTestWindow(null,PassFailJFrame.Position.HORIZONTAL);`

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PR: https://git.openjdk.org/jdk/pull/9525