REGRESSION: Tab order incorrect when input inside frame/iframe gets initial focus

• Component: Forms
• Status: RESOLVED FIXED

[David Kilzer (:ddkilzer)]

Summary:

When an <input> element inside a <frame> or an <iframe> gets the initial focus on the page, the tabbing order is incorrect.

Steps to reproduce #1:

1. Open Safari/WebKit.
2. Open one of the two attached test cases.
3. Hit Tab.

Expected results #1:

Next <input> element should be focused.

Actual results #1:

Either "nothing" happens (focus does not change), or focus changes to address bar.

Steps to reproduce #2:

4. Hit Cmd-R (or the Reload button in Safari).
5. Hit Tab again.

Expected results #2:

Next <input> element should be focused.

Actual results #2:

Focus changes to address bar.  Further tabs to to the Google search, then back to the initially focused <input> element again, then finally to the second <input> element.

Regression:

This is a regression from shipping Safari 2.0.4 (419.3) on Mac OS X 10.4.8 (8N1037).

Tested with a locally-built debug build of WebKit r19315 with afari 2.0.4 (419.3) on Mac OS X 10.4.8 (8N1037).

[David Kilzer (:ddkilzer)]

Created attachment 12840 [details]
Test focus (no frames; works as expected)

[David Kilzer (:ddkilzer)]

Created attachment 12841 [details]
Test frame focus (does not work as expected)

[David Kilzer (:ddkilzer)]

Created attachment 12842 [details]
Test iframe focus (does not work as expected)

[Mark Rowe (bdash)]

<rdar://problem/4971227>

[Adam Roben (:aroben)]

With the frame test it takes me 3 tab presses to move focus from the first <input> to the second.

With the iframe test it takes me 2 tab presses to move focus from the first <input> to the second.

In both test cases, Shift-Tab first moves focus to the second <input>, then back to the first, and focus moves correctly from then on.

[Adam Roben (:aroben)]

I suspect that the cause for this is HTMLInputElement::focus is not resulting in the focused frame getting set correctly. Should be a pretty simple fix.

[Adam Roben (:aroben)]

Created attachment 13177 [details]
Patch with ChangeLog and test

[Darin Adler]

Comment on attachment 13177 [details]
Patch with ChangeLog and test

r=me

[Adam Roben (:aroben)]

Landed as r19636