Last Comment Bug 879119 - Drop support for -moz-prefixes from cursor: zoom-in | zoom-out | grab | grabbing
: Drop support for -moz-prefixes from cursor: zoom-in | zoom-out | grab | grabbing
Status: NEW
: dev-doc-needed, site-compat
Product: Core
Classification: Components
Component: CSS Parsing and Computation (show other bugs)
: Trunk
: All All
: -- normal with 2 votes (vote)
: ---
Assigned To: Nobody; OK to take it and work on it
: Jet Villegas (:jet)
Depends on:
Blocks: unprefix 772153 880672
  Show dependency treegraph
Reported: 2013-06-03 19:46 PDT by j.j.
Modified: 2016-11-25 07:27 PST (History)
7 users (show)
See Also:
Crash Signature:
QA Whiteboard:
Iteration: ---
Points: ---
Has Regression Range: ---
Has STR: ---

879119-remove_support_for_moz-prefixed_cursor_values.diff (5.88 KB, patch)
2016-11-24 15:54 PST, Thomas Wisniewski
cam: review+
Details | Diff | Splinter Review

Description j.j. 2013-06-03 19:46:28 PDT
Bug 772153 added support for unprefixed cursor: zoom-in | zoom-out (Fx24).
Support for -moz-prefixes should be dropped after
<inset-arbitrary-number-here> releases.
Comment 1 Merih Akar 2014-02-09 16:16:04 PST
Unprefixed grab | grabbing are implemented in Bug 880672 (Firefox 27).

Besides, shouldn't bugs 772153 and 880672 be blocking this issue rather than is blocked by this?

Lastly, most web authors supply a fallback image or unprefixed zoom-in | zoom-out | grab | grabbing as a value for the cursor, so I think "<inset-arbitrary-number-here>" does not need to be a big number.
Comment 2 Kohei Yoshino [:kohei] 2015-10-27 19:07:36 PDT
Posted the site compatibility doc:
Comment 3 Thomas Wisniewski 2016-09-09 06:42:08 PDT
I note that there are still active themes/addons on DXR which only use the -moz variant of these properties, some of which are still kept up-to-date. Is it worth removing the prefixed variants regardless, given the time it has been since the unprefixed versions (and deprecation notice) were issued?
Comment 4 j.j. 2016-09-12 07:42:45 PDT
(In reply to Thomas Wisniewski from comment #3)

> Is it worth removing the prefixed variants


Blink woudn't drop any -webkit-prefix if they asked that question
Comment 5 Thomas Wisniewski 2016-09-12 07:48:00 PDT
Of course :)

But is it worth removing them *now*?
Comment 6 Thomas Wisniewski 2016-11-24 15:54:49 PST
Created attachment 8814260 [details] [diff] [review]

In the interests of moving this forward, here's a patch that removes the moz-prefixed cursors.

Try seems fine with it (discounting the scary-looking unrelated oranges there):

I can also file an intent to unship on dev.platform, since I think that's standard procedure for any such removals?
Comment 7 Cameron McCormack (:heycam) 2016-11-24 22:11:37 PST
(In reply to Thomas Wisniewski from comment #6)
> I can also file an intent to unship on dev.platform, since I think that's
> standard procedure for any such removals?

Yes, I think that would be a great idea.  Is there a way you can determine the number of users of the addons that mention these cursor property values?  Searching for moz-zoom-in on DXR, it looks like nearly all uses are just setting that property, and so any breakage would be limited to the cursor not looking right, which is pretty minimal.  If you can determine that any of the addons have a lot of users, you could contact the authors to prompt them to update.
Comment 8 Cameron McCormack (:heycam) 2016-11-24 22:14:16 PST
Comment on attachment 8814260 [details] [diff] [review]

Review of attachment 8814260 [details] [diff] [review]:

r=me though I'd probably wait until after you give a week or so after sending the intent email to see if you get any pushback.

::: layout/style/nsCSSProps.cpp
@@ +1269,5 @@
>    { eCSSKeyword_grab, NS_STYLE_CURSOR_GRAB },
>    { eCSSKeyword_grabbing, NS_STYLE_CURSOR_GRABBING },
>    { eCSSKeyword_zoom_in, NS_STYLE_CURSOR_ZOOM_IN },
>    { eCSSKeyword_zoom_out, NS_STYLE_CURSOR_ZOOM_OUT },
>    // -moz- prefixed vendor specific

You can remove this comment.
Comment 9 Thomas Wisniewski 2016-11-25 07:27:04 PST
Intent to unship has been sent:!topic/

I'll try to study DXR soon to see who to outreach.

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