Add an option to cancel the filter popup

Feature
1

Rational

At GTK client is possible after open filter popup window, click the icon filter again and close the current popup and not to do RPC search to server.

Screenshot_20190606_100259
Screenshot_20190606_100259.png1920×1044 101 KB

In SAO after open filter popup window can’t close popup window and close de filter popup

Screenshot_20190606_100238
Screenshot_20190606_100238.png1920×1044 62.5 KB

Proposal

Add inside modal-title in modal-header popup filter close button.

        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
2

Why not adding a cancel button near the find button like we do on most wizards?

3

Indeed I think it is the behavior of the desktop client that is not right (but it is not a big deal). The input of the search box should always synchronized with the actual search.