refresh button in cart

At the end of step.php you have the following line of code:

echo $this->cart->displayButton(JText::_('CONTINUE_SHOPPING'),'continue_shopping',$this->params,JRoute::_($this->continueShopping),'window.location=\''.JRoute::_($this->continueShopping).'\';return false;','id="hikashop_checkout_shopping_button"');

Looking at what I want to do in more detail this morning raised further issues:

(a) I have added a product quantity update icon to my checkout, like you have in the demo.
Found that if I change the quantity and click the icon it updates OK.
If I then click the icon again it submits the order - same thing happens on your demo
My code is:

<a onclick="var qty_field = document.getElementById('hikashop_checkout_quantity_<?php echo $row->cart_product_id;?>'); qty_field.form.submit(); return false;" href="#">
<img border="0" alt="Refresh" src="<?php echo HIKASHOP_IMAGES; ?>refresh.png"/>
</a>

I would be inclined to add a hidden input field to the form and then modify the onclick() javascript to set that according to which element was clicked before submitting the form.

The functionality would then be something like:

Quantity refresh icon - update values* and then always return to current page.
Next - update values* and, if validation succeeded, proceed to next page (as now).
Continue shopping - lose changes* and proceed to main shop page (as now).

Support for the following, additional buttons (I am expecting to be asked for these!):
Save and continue shopping - update values* and, if validation succeeded, proceed to main shop page.
Cancel - undo any changes* made so far.
Update - update values* and then always return to current page.

* = any input fields (quantities, shipping, payment, extra order information).

So I suppose the value of that hidden field would be the required action, rather than button name:
E.G. UPDATE CANCEL NEXT CANCEL-SHOP UPDATE-SHOP

One solution for the product quantity update icon is to add a before / after field value check as below:

Code in checkout/cart.php of v1.5.3

<div class="hikashop_cart_product_quantity_refresh">
<a href="#" onclick="var qty_field = document.getElementById('hikashop_checkout_quantity_<?php echo $row->cart_product_id;?>'); qty_field.form.submit(); return false;">
<img src="<?php echo HIKASHOP_IMAGES . 'refresh.png';?>" border="0" alt="Refresh information" />
</a>
/div>

<div class="hikashop_cart_product_quantity_refresh">
<a onclick="var qty_field = document.getElementById('hikashop_checkout_quantity_<?php echo $row->cart_product_id;?>'); if (qty_field.value != '<?php echo $row->cart_product_quantity; ?>') qty_field.form.submit(); return false;" href="#">
<img border="0" alt="Refresh" src="<?php echo HIKASHOP_IMAGES; ?>refresh.png"/>
</a>
</div>