creation of the repo fbpatch

js/calculations.js

@@ -0,0 +1,70 @@
+
+function patch_form_calculation_CIPF() {
+	let form_calculation = document.querySelector('form.fb_form.multistep');
+	if (form_calculation === null)
+		return;
+
+	/*
+	* finds the input:checked in the element .calculate_field
+	* and trigger the event 'change' on it
+	* - this event 'change' is added by form builder in divi-form-calc-min.js :
+	*    $(document).on(
+	*      'change',
+	*      '.calculate_field input:not([type="hidden"]), .calculate_field select',
+	*      function () {
+	*        ...
+	*      }
+	*    );
+	*
+	*/
+	function trigger_change(element) {
+		/*
+		* jquery version
+		*
+		let inputs = $(element).find('input:checked');
+		inputs.trigger('change');
+		*/
+
+		/*
+		* js version
+		*
+		*/
+		let inputs = element.querySelectorAll('input:checked');
+		// loop through inputs and trigger 'change' event on each
+		inputs.forEach(function(input) {
+			// Triggering 'change' event
+			let change_event = new Event('change', {
+				bubbles: true,
+				cancelable: true,
+			});
+			input.dispatchEvent(change_event);
+		});
+	}
+
+
+	// create an observer on form to check if child nodes are modified
+	const observer_form = new MutationObserver(wait_for_calculation_class);
+	observer_form.observe(form_calculation, {
+		subtree: true,
+		attributes: true,
+	});
+
+	// observe mutations to see if they include the addition of class .calculate_field
+	// if the class is added, call the function that might trigger the change event on it
+	function wait_for_calculation_class(mutationsList) {
+		mutationsList.forEach((mutation) => {
+			// check if class where added
+			if (mutation.type !== 'attributes')
+				return;
+			if (mutation.attributeName !== 'class')
+				return;
+			// check if added class is .calculate_field
+			let target = mutation.target;
+			if (target.classList.contains('calculate_field')) {
+				// If the class is added, trigger the 'change' event
+				trigger_change(target);
+			}
+		});
+	}
+}
+patch_form_calculation_CIPF();