Steps to reproduce the issue

I wanted to disable "Recommend to a friend" link in frontend and I just couldn't find the option to do it because it was enabled and hidden in the backend. This should be used with caution.

Expected result

All fields are disabled

Actual result

Only fields that are manually disabled are actually disabled and but all are hidden. This is bad from UX perspective.

System information (as much as possible)

Joomla 3.6

Additional comments

It would be great to extend this feature with following options:

• default - do not change options
• onEnable - default / value='1' (change all values to 1 or some other value)
• onDisable - default / value='0' (change all values to 0 or some other value)

Example

<field
name="bar"
type="text"
showon="foo:1"
onEnable="value:1"
onDisable="default"
/>