Add tolerance: 'pointer' option to widgets

[alexvorn2]

I made a conclusion that it's more easy to sort the widgets in a sidebar if is with tolerance: 'pointer' option enabled...

please consider adding this to sortable function of the widgets.

[jkudish]

Looks like the latest copy of trunk already has tolerance: pointer, as per: https://core.trac.wordpress.org/browser/trunk/wp-admin/js/widgets.dev.js#L153

[SergeyBiryukov]

Replying to jkudish:

Looks like the latest copy of trunk already has tolerance: pointer

It's in droppable() function. This ticket is about sortable().

[jkudish]

Replying to SergeyBiryukov:

It's in droppable() function. This ticket is about sortable().

My mistake, should have looked closer :(

[jkudish]

first pass at adding tolerance: pointer to the widgets sortable js

[DrewAPicture]

Version field tracks when the feature was first requested.

[MikeHansenMe]

file rename

[MikeHansenMe]

Updated the file to apply patch to widgets.js instead of widgets.dev.js now that production js is minified.

[helen]

Can we get a description of what "easier" is here, perhaps with some screencasts?

[chriscct7]

Replying to helen:

Can we get a description of what "easier" is here, perhaps with some screencasts?

Here's a demo that shows why the pointer tolerance makes it easier:
​http://jquery-ui.googlecode.com/svn/tags/1.6rc5/demos/sortable/tolerance.html

Default Tolerance:
Try dragging the box called "default tolerance" to the middle of the first row (so basically to the right of "2" in the first row). Note that you have to be past 2 before the shift happens, even though you know you're going to move it past it.

Pointer Tolerance:
Try dragging the box called "pointer tolerance" to the middle of the second row (so to the right of the row 2 "2". Note jQuery realizes you're going to drag it to the right, and does the swap after you've passed about 80% of the box.

Screencast demo: ​https://db.tt/VWg57PTm

[chriscct7]

Is it a massive UI improvement? I mean its not earth shattering but it is slightly more intuitive and also makes position changes faster. You don't have to unintuitively drag it as far as you do right now

[johnbillion]

This is a small but really nice change. Adding it to the widget customizer too.

[johnbillion]

In 32689:

Switch to pointer tolerance for improved drag and drop behaviour when reordering widgets.

Props jkudish, MikeHansenMe.
Fixes #20791