[FIX] website_sale: terms & conditions

- Install website_sale and website_sale_delivery
- Activate 'Terms & Condition' on the payment page
- Process a shopping cart

On the payment page, the 'Terms & Condition' checkbox is unchecked, but
the 'Payment' button is enabled.

Both `$checkbox.change` and `_onCarrierUpdateAnswer` set the `disabled`
property, and conflict.

We keep on the HTML node an object with the list of disabled reasons.

opw-1923459

Co-authored-by: Nicolas Lempereur <nle@odoo.com>

closes odoo/odoo#30504

addons/website_sale/static/src/js/website_sale_payment.js

@@ -7,9 +7,12 @@ var $checkbox = $("#checkbox_cgv");
 if (!$checkbox.length) {
     return;
 }
+var $pay_button = $('button#o_payment_form_pay');
 
 $checkbox.on('change', function (ev) {
-    $('button#o_payment_form_pay').prop('disabled', !ev.target.checked);
+    $pay_button.data('disabled_reasons', $pay_button.data('disabled_reasons') || {});
+    $pay_button.data('disabled_reasons').cgv = !ev.target.checked;
+    $pay_button.prop('disabled', _.contains($pay_button.data('disabled_reasons'), true));
 });
 $checkbox.change();
 });

addons/website_sale_delivery/static/src/js/website_sale_delivery.js

@@ -35,7 +35,8 @@ odoo.define('website_sale_delivery.checkout', function (require) {
             $carrier_badge.children('span').text(result.new_amount_delivery);
             $carrier_badge.removeClass('d-none');
             $compute_badge.addClass('d-none');
-            $pay_button.prop('disabled', false);
+            $pay_button.data('disabled_reasons').carrier_selection = false;
+            $pay_button.prop('disabled', _.contains($pay_button.data('disabled_reasons'), true));
         }
         else {
             console.error(result.error_message);
@@ -48,6 +49,8 @@ odoo.define('website_sale_delivery.checkout', function (require) {
     };
 
     var _onCarrierClick = function(ev) {
+        $pay_button.data('disabled_reasons', $pay_button.data('disabled_reasons') || {});
+        $pay_button.data('disabled_reasons').carrier_selection = true;
         $pay_button.prop('disabled', true);
         var carrier_id = $(ev.currentTarget).val();
         var values = {'carrier_id': carrier_id};