Of course other items may be generalized as well. But in effort to generate ideas, here is the class object with public methods.
class GeneralOrderGridInsertEditTemplateMethods
{
    public static function GetInsertFormButtons()
    {
        $jqueryButton = ' <script> '
                . '$(function(){ '
                . ' $("#BackButton").button(); '
                . ' $("#SaveButton").button(); '
                . '}); </script> ';
        
        $confirmButton = '
            <input type="button" id="SaveButton" class="ui-button ui-widget ui-state-default ui-corner-all ui-button-text" 
            style="color:green; font-size:12px;border-color:green;" aria-disabled="false" onclick="grid_confirm_insert(this)" value="Save" />';
        
        $cancelButton = '
            <input type="button" id="BackButton" class="ui-button ui-widget ui-state-default ui-corner-all ui-button-text" 
            style="color:red;font-size:12px;border-color:#F78181;" aria-disabled="false" onclick="grid_cancel_insert(this)" value="Back" />';
            
        return '<table align="right">
                <tr>
                <td style="padding:5px;">'.$cancelButton.'</td><td>'.$confirmButton.'</td> 
                </tr>
                </table>' . $jqueryButton;
    }
    
    public static function GetEditFormButtons()
    {
        $jqueryButton = ' <script> '
                . '$(function(){ '
                . ' $("#BackButton").button(); '
                . ' $("#SaveButton").button(); '
                . '}); </script> ';
        
        $confirmButton = '
            <input type="button" id="SaveButton" class="ui-button ui-widget ui-state-default ui-corner-all ui-button-text" 
            style="color:green; font-size:12px;border-color:green;" aria-disabled="false" onclick="grid_confirm_edit(this)" value="Save" />';
        
        $cancelButton = '
            <input type="button" id="BackButton" class="ui-button ui-widget ui-state-default ui-corner-all ui-button-text" 
            style="color:red;font-size:12px;border-color:#F78181;" aria-disabled="false" onclick="grid_cancel_edit(this)" value="Back" />';
            
        
        return '<table align="right">
                <tr>
                <td style="padding:5px;">'.$cancelButton.'</td><td>'.$confirmButton.'</td> 
                </tr>
                </table>' . $jqueryButton ;
    }
    
}Here is the usage example.
$buttons = GeneralOrderGridInsertEditTemplateMethods::GetEditFormButtons();
/* Generate your form below, and include the buttons where you like.  */ 
                	 
 
							 
 
							 
 
							
