Hide non-numeric fields for Math calculations

js/src/admin/admin.js

@@ -3056,6 +3056,12 @@ window.frmAdminBuildJS = function() {
 		return 'field_options' + opt.substring( 0, at ) + '_' + fieldId + opt.substring( at );
 	}
 
+	/**
+	 * Populates the calculation field list.
+	 *
+	 * @param {HTMLElement} v     The calculation box element.
+	 * @param {boolean}     force Whether to force the refresh.
+	 */
 	function popCalcFields( v, force ) {
 		let box, exclude, fields, i, list,
 			p = jQuery( v ).closest( '.frm-single-settings' ),
@@ -3075,16 +3081,19 @@ window.frmAdminBuildJS = function() {
 			box = document.getElementById( 'frm-calc-box-' + fieldId );
 		}
 
-		exclude = getExcludeArray( box, isSummary );
+		const codeList = box.querySelector( '.frm_code_list' );
+		exclude = getExcludeArray( codeList, isSummary );
 		const excludedOpts = extractExcludedOptions( exclude );
+		const numericTypes = isMathCalcType( box ) ? getNumericFieldTypes( codeList ) : null;
 
 		fields = getFieldList();
 		list = document.getElementById( 'frm-calc-list-' + fieldId );
 		list.innerHTML = '';
 
 		for ( i = 0; i < fields.length; i++ ) {
 			if ( ( exclude && exclude.includes( fields[ i ].fieldType ) ) ||
-				( excludedOpts.length && hasExcludedOption( fields[ i ], excludedOpts ) ) ) {
+				( excludedOpts.length && hasExcludedOption( fields[ i ], excludedOpts ) ) ||
+				( numericTypes && ! numericTypes.includes( fields[ i ].fieldType ) ) ) {
 				continue;
 			}
 
@@ -3103,8 +3112,14 @@ window.frmAdminBuildJS = function() {
 		}
 	}
 
-	function getExcludeArray( calcBox, isSummary ) {
-		const codeList = calcBox.querySelector( '.frm_code_list' );
+	/**
+	 * Gets the exclude array for the calculation box.
+	 *
+	 * @param {HTMLElement} codeList  The code list element.
+	 * @param {boolean}     isSummary Whether the calculation box is for a summary.
+	 * @returns {Array} The exclude array.
+	 */
+	function getExcludeArray( codeList, isSummary ) {
 		const exclude = JSON.parse( codeList.getAttribute( 'data-exclude' ) );
 
 		if ( isSummary ) {
@@ -3126,6 +3141,32 @@ window.frmAdminBuildJS = function() {
 		return exclude;
 	}
 
+	/**
+	 * Gets the numeric field types from the calculation box.
+	 *
+	 * @param {HTMLElement} codeList The code list element.
+	 * @returns {Array|null} The numeric field types, or null if not available.
+	 */
+	function getNumericFieldTypes( codeList ) {
+		const numericTypes = codeList.dataset.numericTypes;
+		return numericTypes ? JSON.parse( numericTypes ) : null;
+	}
+
+	/**
+	 * Checks if the calculation is a math calculation.
+	 *
+	 * @param {HTMLElement} calcBox The calculation box element.
+	 * @returns {boolean} True if the calculation is a math calculation, false otherwise.
+	 */
+	function isMathCalcType( calcBox ) {
+		const fieldFormula = calcBox.parentElement;
+		if ( ! fieldFormula?.classList.contains( 'frm-field-formula' ) ) {
+			return false;
+		}
+
+		return document.querySelector( `input[name="field_options[calc_type_${ fieldFormula.dataset.fieldId }]"]:checked` ).value !== 'text';
+	}
+
 	function getIncludedExtras() {
 		const checked = [];
 		const checkboxes = document.getElementsByClassName( 'frm_include_extras_field' );