User Agent: Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:52.0) Gecko/20100101 Firefox/52.0 Build ID: 20161020030211 Steps to reproduce: In Firefox 52, open the Inspector Tool. Select the Computed tab. Position the pointer between the box and the label 'browser styles' checkbox. Actual results: The box is not highlighted and mouse 'clicks' have no effect. Expected results: The box should be highlighted and the mouse 'click' should toggle the presence of a check mark in the box.
This is because the 'input[id=browser-style-checkbox]' precedes 'label[id=browser-style-checkbox-label]' (it was inside). The gap between these is a margin and the pointer events are received by the container 'div[id=#computedview-toolbar]'. This problem can be fixed swapping the values of 'margin-inline-end' of 'input[id=browser-style-checkbox]' and 'padding-inline-start' of 'label[id=browser-style-checkbox-label]', which are '5px' and '0' respectively.
This is a regression. It used to work before when the checkbox was a child of the label element. Now the checkbox and the label are siblings. I think this was changed in bug 1294186.
Julian, do you mind checking if this is a simple enough bug for being goof-first and mentored? If yes, please give a pointer to the file that needs changing so someone can start working on it.
Sure, looks like a good first bug! I think the easiest way to go here is to update the CSS for the input and label in order to make the gap clickable. Right now we have a 5px margin at the right of the input, defined in devtools/client/themes/computed.css (see ). We should set the margin-inline-end to 0 and compensate with a 5px padding on the left of the label (#browser-style-checkbox-label). This should work in both left-to-right and right-to-left directions, so we should use logical padding properties here (see ). On a sidenote, the label currently has a `margin-right` property defined. It would be nice to replace this by the logical property equivalent: `margin-inline-end`. I don't think it's worth adding a test here, because it would have to simulate a click on a very specific position and would be both fragile and too tied to the implementation.  http://searchfox.org/mozilla-central/rev/f5c9e9a249637c9abd88754c8963ecb3838475cb/devtools/client/themes/computed.css#39  https://developer.mozilla.org/en-US/docs/Web/CSS/padding-inline-start
Created attachment 8808528 [details] [diff] [review] paddingfrommargin.patch Hope the patch helps :)
Comment on attachment 8808528 [details] [diff] [review] paddingfrommargin.patch Review of attachment 8808528 [details] [diff] [review]: ----------------------------------------------------------------- Looks good to me, thanks. Works well in both LTR and RTL directions. By the way you can use the ForceRTL addon  to test this, forgot to mention it earlier.  https://addons.mozilla.org/en-GB/firefox/addon/force-rtl/ Two things to address before landing: - use a shorter commit summary - small nit in computed.css below Feel free to set r+ directly on your follow up patch addressing this and add the checkin-needed keyword. Thanks for taking this one Towkir! ::: devtools/client/themes/computed.css @@ +40,1 @@ > nit: let's remove this blank line while we're at it.
Created attachment 8808628 [details] [diff] [review] paddingfrommargin.patch Here is the updated patch.
Pushed by email@example.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/d9aa5a3ed0da Use padding instead of margin for the gap in browser styles checkbox and label. r=jdescottes
I have reproduced this bug with Nightly 52.0a1 (2016-10-20) (64-bit) on Windows 7 , 64 Bit ! This bug's fix is verified with latest Beta ! Build ID : 20170202101509 User Agent : Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Firefox/52.0 [testday-20170203]
I have reproduced this bug with Nightly 52.0a1 (2016-10-20) (64-bit) on Ubuntu 16.10 , 64 Bit ! This bug's fix is verified with latest Beta ! Build ID : 20170202101509 User Agent : Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0 [testday-20170203]