1336750 - find toolbar broken in xul pages like about:preferences; NS_ERROR_UNEXPECTED in FinderHighlighter.jsm:1113

Status: NEW

(Toolkit :: Find Toolbar, defect)

Description

[Steffen Wilberg]

As requested in bug 1326821 comment 15, here's your bug:

1. open about:preferences, General pane
2. open the browser console
2. activate the find bar using the Find toolbar button (the ctrl+f keyboard shortcut is disabled)
3. enter "Nightly"

Result:
On about:preferences: nothing visible. In the console: the following error, once per keystroke:
 
NS_ERROR_UNEXPECTED:  1 FinderHighlighter.jsm:1113
	_repaintHighlightAllMask resource://gre/modules/FinderHighlighter.jsm:1113:9
	_maybeCreateModalHighlightNodes resource://gre/modules/FinderHighlighter.jsm:1091:5
	show resource://gre/modules/FinderHighlighter.jsm:325:5
	update resource://gre/modules/FinderHighlighter.jsm:443:9
	_notify resource://gre/modules/Finder.jsm:118:5
	fastFind resource://gre/modules/Finder.jsm:193:5
	_find chrome://global/content/bindings/findbar.xml:1005:13
	onxblinput chrome://global/content/bindings/findbar.xml:82:9


4. Press Enter in the findbar.
Result: The third appearance of "Nightly", in the line "Nightly is currently your default browser" is somewhat highlighted, this is, it appears in white on almost white, i.e. illegible.


I also managed to trigger this error, but can't reproduce it reliably:

A promise chain failed to handle a rejection. Did you forget to '.catch', or did you forget to 'return'?
See https://developer.mozilla.org/Mozilla/JavaScript_code_modules/Promise.jsm/Promise

Full Message: 
Full Stack: JS frame :: resource://gre/modules/FinderHighlighter.jsm :: _repaintHighlightAllMask :: line 1113
JS frame :: resource://gre/modules/FinderHighlighter.jsm :: _maybeCreateModalHighlightNodes :: line 1091
JS frame :: resource://gre/modules/FinderHighlighter.jsm :: show :: line 325
JS frame :: resource://gre/modules/FinderHighlighter.jsm :: _modalHighlight :: line 1053
JS frame :: resource://gre/modules/FinderHighlighter.jsm :: highlightRange :: line 291
JS frame :: resource://gre/modules/FinderHighlighter.jsm :: onIteratorRangeFound :: line 255
JS frame :: resource://gre/modules/FinderIterator.jsm :: this.FinderIterator._findAllRanges< :: line 496
JS frame :: resource://gre/modules/Task.jsm :: TaskImpl_run :: line 319 1 FinderHighlighter.jsm:1113

Comment 1

[Steffen Wilberg]

Further examples are about:config and about:addons (again, use the Find toolbar button to open the find bar).

Comment 2

[Mike de Boer [:mikedeboer]]

Well, this is an example of the Anonymous Content API being unavailable to XUL documents. Bug 1094959 is about this issue exactly.