How to add save and stay button to HeaderToolbar in back office ?

[[email protected]]

Hello,
someone try to move or add Save and Stay button in edit product card from footer to header toolbar ?

Reviewing the file AdminProductController.php I'm only managed to add icons but not working buttons.

How can I add Save and Stay button to method initPageHeaderToolbar() ?

[[email protected]]

I achieved the target by adding a piece of code to method initPageHeaderToolbar() in AdminProductController.php file:
 
 // add link and action save to header tool bar
    $this->page_header_toolbar_btn['save'] = array(
    'short' => 'Save',
    'href' => '#',
    'desc' => $this->l('Save'),
    'js' => $this->l('$( \'[name=submitAddproduct]\' ).click();')
);

// add link and action save and stay to header tool bar
$this->page_header_toolbar_btn['save-and-stay'] = array(
    'short' => 'SaveAndStay',
    'href' => '#',
    'desc' => $this->l('Save and stay'),
    'js' => $this->l('$( \'[name=submitAddproductAndStay]\' ).click();')
);

but this solution is so slow and weak... I'm not satisfied. This is not way what I want get.