Clear button

Hello!
I created html concept for custom filter panel and i going to realize it in project as fully functional filter panel.
(by the way, it's not first time, i've already done few other concepts - now it's part of the project).
As for me, panel looks very well, but some basic component features, seems, not supported.
I'm about button "х" that should allow clear edit field as well as should call server side handler.
Is it supported right now? If not, can you add such feature?
I created html concept for custom filter panel and i going to realize it in project as fully functional filter panel.
(by the way, it's not first time, i've already done few other concepts - now it's part of the project).
As for me, panel looks very well, but some basic component features, seems, not supported.
I'm about button "х" that should allow clear edit field as well as should call server side handler.
Is it supported right now? If not, can you add such feature?