Make shift-click checkbox range selection work in both directions

[sillybean]

It used to be possible to select a range of checkboxes in the post list by shift-clicking (see #6541). I'm not entirely sure when this feature disappeared, but it's been a while.

Patch restores the functionality using the ​jQuery shiftcheckbox plugin.

[sillybean]

restores ability to select consecutive checkboxes by shift-clicking

[nacin]

Works for me on trunk. Selected the first checkbox and the fifth checkbox, while holding shift. Two through four were selected.

[johnbillion]

Yep, works for me on Chrome Win7/OSX, Firefox Win7/OSX and IE9 Win7.

sillybean: Can you reproduce using the default theme and with all plugins disabled?

[SergeyBiryukov]

Works for me in Firefox 18, IE 8, and Opera 12.

[sillybean]

The built-in method does work on posts and pages with no plugins installed. It does not work on other screens where it would be useful: the plugins list, for example, or any list tables generated by plugins.

The built-in method also breaks at the drop of a hat. Even otherwise well-behaved plugins cause weirdness, like being able to select top-down but not bottom-up.

The patch seems to be more robust than whatever's built in now, and it works on other screens.

[SergeyBiryukov]

Replying to sillybean:

The built-in method does work on posts and pages with no plugins installed. It does not work on other screens where it would be useful: the plugins list, for example, or any list tables generated by plugins.

It does work for me on the Plugins screen as well as on CPT list tables. Tested in Firefox 19, Chrome 25, IE 8, Opera 12. The relevant code is in common.js:
​http://core.trac.wordpress.org/browser/tags/3.5.1/wp-admin/js/common.js#L273

[MikeHansenMe]

This is also working for me on FF 19. Proposing close as worksforme

[sillybean]

I've been working on trunk all day, and the problem is still there: shift-click selection works downward, but not upward. I have no plugins installed that might interfere with the JS.

[c3mdigital]

Allows bulk checking in both directions

[c3mdigital]

Bulk checking both directions for any WP_List_Table generated list table.

[sillybean]

Latest patch works for me.

[SergeyBiryukov]

23427.2.patch​ builds on 23427.patch​ without duplicating the code.

[helen]

I like 23427.2.patch​ and it's working nicely.

[helen]

In 25141:

Make shift-click checkbox range selection work in both directions. props c3mdigital, SergeyBiryukov. fixes #23427.