Modifying admin post list buttons/dropdown - wordpress

Question

I've created my own custom post type search filter and instead of having another menu i want to append the select options to the default woocommerce status filter dropdown select.
Also i want to change both the Filter and Search Orders buttons text to Go.
Here is how i add my own dropdown select but instead i want to append.
add_action( 'restrict_manage_posts', 'wpse45436_admin_posts_filter_restrict_manage_posts' );
function wpse45436_admin_posts_filter_restrict_manage_posts(){
$type = 'shop_order';
if (isset($_GET['post_type'])) {
$type = $_GET['post_type'];
}
//only add filter to post type you want
if ('shop_order' == $type){
//change this to the list of values you want to show
//in 'label' => 'value' format
$values = array(
'Ordered From Supplier' => 'ordered_supplier',
'Ready for Dispatch' => 'ready_dispatched',
'Despatched' => 'despatched',
'Delivered' => 'delivered',
'Returns' => 'returns',
);
?>
<select name="shop_order_status_2" class="chzn-done">
<option value="" selected><?php _e('Show All Order Statuses ', 'wose45436'); ?></option>
<?php
$current_v = isset($_GET['shop_order_status_2'])? $_GET['shop_order_status_2']:'';
foreach ($values as $label => $value) {
printf
(
'<option value="%s"%s>%s</option>',
$value,
$value == $current_v? ' selected="selected"':'',
$label
);
}
?>
</select>
<?php
}
}
How do i accomplish this? What filters do i use?

Answer 1

I believe you can change the button text by filtering the gettext(). This is what allows the button text to be translated, but it can also be hijacked for this type of purpose.
add_filter( 'gettext', 'so_29631694_modify_filter_button_text' );
function so_29631694_modify_filter_button_text( $translated_text, $untranslated_text, $domain ){
if( is_admin() && 'Filter' == $untranslated_text){
$translated_text = 'Go';
}
return $translated_text;
}
Or you could do it with a little jQuery:
$('order-query-submit').attr('value', 'Go');