Multiselect with checkboxis ?

[alotnak]

Has anyone made something like this for ng2-select?
Like multiselect now:

in input box

1. you see selected items
2. you can delete item klicking X after item
3. and you can search items typing and see matching items in drowdown/modal.

But in drowdown/modal you could multiselect plus unselect

1. If items is already selected, it would be seen as checked/bold/with other background color
2. if item is already selected you could unselect item clicking it, and it would be removed immediately from input box
3. if item is unselected (not selected yet), you could select item clicking it, and it would be added immediately to input box
4. the drowdown/modal would be closed only by cliciking "close" or clicking outside, not by clicking item itself.

Or is there elsewhere component like this, and if, where? Seen in use in many sites.