ColorPalette: no hover/selection indication (Safari)

[bill]

On ​test_ColorPalette.html on FF/IE, hovering over a cell or using the arrow keys to navigate between cells shows a black border around the cell... but for Safari nothing is shown. (At least for tundra theme.)

(For Safari arrows keys don't work, but still the hover thing should work)

[nonken]

This is because safari seems to have some issues with onfocus, the styles won't get set since the event doesn't fire

[nonken]

ignore the last comment, the issue seems to have to do with when what event gets fired and how the widget reacts to it. It's not a CSS issue

[bill]

I'll fix. I think the problem is that onMouseOver --> focus() event but that doesn't trigger the _onFocus() handler... that'll be fixed in a future version of Safari but we can workaround for now.

[bill]

(In [14290]) Fixes #6173: no hover/selection indication on safari.

ColorPalette?'s design to have focus track mouse movement. combined with Safari's broken notification of focus events, was breaking highlighting on mouse movement. Work around the problem.

Could also have been fixed by making mouse hover independent of focus, although it's debatable whether or not that's a good idea.

!strict