ColorPalette: focus trapped in the color palette test page

[Becky Gibson]

Browsers Affected: FireFox? 3.0 FireFox? 3.5 Safari 4.0 Chrome 3.0

Steps to Reproduce:

1.- Open the browser 2.- Go to the Color Picker widget 3.- Press the Tab key to set focus in the first widget. 4.- Continue to navigate using tab. 5.- Attempt to focus any of the browser's functions, using the tab key.

Actual Result : Focus goes from one palette to another, never returning to the browser

window, trapping the user in its content.

Expected Result: To be able to navigate through the browser's menu/adress bar/toolbar/etc after focusing the widget, just as it works in Internet Explorer (6,7,8).

I looked in the test page code and this doesn't appear to be related to anything there. This did not happen in 1.3.2.

[bill]

Related to #5119.

[bill]

(In [20780]) Big cleanup of ColorPalette code, fixing focus issues and rolling back most of #5119 as it missed the point that we should set tabIndex >= 0 on nodes that we focus. Fixes #10315, refs #5119 !strict.

[bill]

(In [20782]) More ColorPalette changes:

• Last time forgot to check in template change.
• Make mouse-off of ColorPalette clear highlighted node.
• Don't bother focusing due to mouse hover changes; I don't think it's necessary. Focus upon clicking or tabbing into ColorPalette.

Refs #10315 !strict.

[bill]

(In [20794]) Fix focus on IE when arrow keys are pressed. Refs #10315 !strict