#623: Add drag and drop priority sorting to legacy Administration Interface

[ernestob]

Our long term clients were used to some of the functionality provided by the admin2++ extension.

The most requested feature is the drag and drop priority sorting.
This pull request is bringing back that feature.

https://jira.ez.no/browse/EZP-30155

[pkamps]

Hi Ernesto,

there is some caching issue:

• In a folder, create 11 subitems
• Sort them by priority
• Drag the first item to the bottom of the list
• You patch will set the correct priorities
• Then click on page 2 in the bottom pagination
• Click back to page 1
• You will see the outdated priority sorting and you do not see changes from before (first item now last)
• That's not the case if you change the priority by typing in a priority value
• Let me know if that makes sense or if you need a quick demo

[ernestob]

This is good, thanks.

First, I will try to reproduce that issue.

[pkamps]

There are probably other use cases that break on multi-page sub items listing. Maybe we only allow the drag&drop on nodes that can show all subitems (so max 10-20-50 items).