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/** |
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* Double Opt-In — Universal Error Notification |
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* |
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* Listens for form submission events from any supported form plugin |
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* and checks the server-side AJAX endpoint for OptIn creation errors. |
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* Displays a toast notification if an error is found. |
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* |
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* @since 4.2.0 |
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*/ |
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(function () { |
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'use strict'; |
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|
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if ( typeof doiErrorNotification === 'undefined' ) { |
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return; |
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} |
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|
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var config = doiErrorNotification; |
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var checking = false; |
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var cooldown = false; |
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|
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/** |
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* Check the AJAX endpoint for a stored submission error. |
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*/ |
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function checkForError() { |
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if ( checking || cooldown ) { |
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return; |
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} |
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checking = true; |
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|
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var xhr = new XMLHttpRequest(); |
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xhr._doiInternal = true; // Prevent the XHR interceptor from re-triggering scheduleCheck |
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xhr.open( 'POST', config.ajaxUrl, true ); |
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xhr.setRequestHeader( 'Content-Type', 'application/x-www-form-urlencoded' ); |
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|
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xhr.onreadystatechange = function () { |
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if ( xhr.readyState !== 4 ) { |
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return; |
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} |
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checking = false; |
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|
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if ( xhr.status !== 200 ) { |
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return; |
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} |
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|
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try { |
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var response = JSON.parse( xhr.responseText ); |
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} catch ( e ) { |
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return; |
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} |
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|
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if ( response.success && response.data && response.data.error ) { |
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// Hide form confirmation messages when validation error should be visible |
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if ( response.data.error.hide_confirmation ) { |
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hideFormConfirmations(); |
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} |
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|
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// Redirect to error page if configured, otherwise show toast |
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if ( response.data.redirect_url ) { |
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window.location.href = response.data.redirect_url; |
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return; |
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} |
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|
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// A toast that stands in for a hidden success message stays until |
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// the visitor closes it — otherwise the form is left saying |
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// nothing at all after ten seconds. |
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showNotification( response.data.error.message, 'error', !! response.data.error.hide_confirmation ); |
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|
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// Prevent duplicate checks for 5 seconds |
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cooldown = true; |
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setTimeout( function () { |
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cooldown = false; |
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}, 5000 ); |
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} else if ( response.success && response.data && response.data.success_message ) { |
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// A "sent — please confirm" message stashed server-side by an |
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// integration that die()s early (Avada) and so can't show the |
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// form plugin's own confirmation. Render it as a success toast. |
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showNotification( response.data.success_message, 'success' ); |
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|
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cooldown = true; |
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setTimeout( function () { |
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cooldown = false; |
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}, 5000 ); |
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} |
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}; |
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|
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xhr.send( |
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'action=doi_check_submission_error&nonce=' + encodeURIComponent( config.nonce ) |
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); |
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} |
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|
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/** |
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* Schedule an error check with a short delay to ensure |
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* the server-side form processing has completed. |
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*/ |
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function scheduleCheck() { |
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setTimeout( checkForError, 800 ); |
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} |
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|
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/** |
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* Hide form plugin confirmation/success messages. |
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* |
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* Called when a validation error should be visible (block/redirect mode) |
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* so the user does not see a contradictory success message. |
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*/ |
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function hideFormConfirmations() { |
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// WPForms confirmation containers |
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var wpfSelectors = '.wpforms-confirmation-container-full, .wpforms-confirmation-container'; |
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document.querySelectorAll( wpfSelectors ).forEach( function ( el ) { |
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el.style.display = 'none'; |
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} ); |
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|
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// Gravity Forms confirmation wrapper |
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document.querySelectorAll( '.gform_confirmation_wrapper' ).forEach( function ( el ) { |
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el.style.display = 'none'; |
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} ); |
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|
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// CF7 success response (only hide the success state, not error state) |
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document.querySelectorAll( '.wpcf7-response-output.wpcf7-mail-sent-ok' ).forEach( function ( el ) { |
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el.style.display = 'none'; |
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} ); |
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|
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// Elementor Forms success message |
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document.querySelectorAll( '.elementor-message.elementor-message-success' ).forEach( function ( el ) { |
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el.style.display = 'none'; |
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} ); |
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} |
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|
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/** |
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* Show a toast notification. |
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* |
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* @param {string} message The message to display. |
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* @param {string} [type] 'error' (default) or 'success' — controls colour + icon. |
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* @param {boolean} [sticky] Keep it until the visitor closes it. |
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*/ |
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function showNotification( message, type, sticky ) { |
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type = type === 'success' ? 'success' : 'error'; |
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|
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var existing = document.querySelector( '.doi-error-notification' ); |
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if ( existing ) { |
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existing.remove(); |
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} |
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|
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var notification = document.createElement( 'div' ); |
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notification.className = 'doi-error-notification'; |
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if ( type === 'success' ) { |
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notification.className += ' doi-error-notification--success'; |
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} |
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notification.setAttribute( 'role', type === 'success' ? 'status' : 'alert' ); |
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|
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var content = document.createElement( 'div' ); |
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content.className = 'doi-error-notification__content'; |
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|
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var icon = document.createElement( 'span' ); |
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icon.className = 'doi-error-notification__icon'; |
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// Check mark for success, warning triangle for error. |
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icon.innerHTML = type === 'success' ? '✓' : '⚠'; |
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|
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var text = document.createElement( 'p' ); |
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text.className = 'doi-error-notification__message'; |
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text.textContent = message; |
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|
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var closeBtn = document.createElement( 'button' ); |
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closeBtn.className = 'doi-error-notification__close'; |
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closeBtn.setAttribute( 'type', 'button' ); |
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closeBtn.innerHTML = '×'; |
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closeBtn.addEventListener( 'click', function () { |
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dismiss( notification ); |
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} ); |
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|
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content.appendChild( icon ); |
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content.appendChild( text ); |
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content.appendChild( closeBtn ); |
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notification.appendChild( content ); |
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document.body.appendChild( notification ); |
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|
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// Trigger enter animation |
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requestAnimationFrame( function () { |
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notification.classList.add( 'doi-error-notification--visible' ); |
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} ); |
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|
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if ( sticky ) { |
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return; |
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} |
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|
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// Auto-dismiss after 10 seconds |
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setTimeout( function () { |
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dismiss( notification ); |
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}, 10000 ); |
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} |
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|
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/** |
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* Dismiss a notification with exit animation. |
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* |
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* @param {HTMLElement} el The notification element. |
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*/ |
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function dismiss( el ) { |
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if ( ! el || ! el.parentNode ) { |
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return; |
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} |
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el.classList.remove( 'doi-error-notification--visible' ); |
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el.classList.add( 'doi-error-notification--exit' ); |
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setTimeout( function () { |
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if ( el.parentNode ) { |
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el.parentNode.removeChild( el ); |
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} |
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}, 300 ); |
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} |
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|
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// ------------------------------------------------------------------------- |
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// Form plugin event listeners |
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// ------------------------------------------------------------------------- |
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|
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// Contact Form 7 (native DOM events) |
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document.addEventListener( 'wpcf7mailsent', scheduleCheck ); |
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document.addEventListener( 'wpcf7invalid', scheduleCheck ); |
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document.addEventListener( 'wpcf7spam', scheduleCheck ); |
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document.addEventListener( 'wpcf7mailfailed', scheduleCheck ); |
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|
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// WPForms + Gravity Forms (jQuery events — not caught by native addEventListener) |
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if ( typeof jQuery !== 'undefined' ) { |
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jQuery( document ).on( 'wpformsAjaxSubmitSuccess', scheduleCheck ); |
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jQuery( document ).on( 'wpformsAjaxSubmitError', scheduleCheck ); |
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jQuery( document ).on( 'gform_confirmation_loaded', scheduleCheck ); |
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} |
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|
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// ------------------------------------------------------------------------- |
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// Universal: catch ANY form submission on the page (capture phase) |
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// This is the most reliable way to detect form submissions regardless |
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// of which form plugin is used. It covers AJAX, standard, and custom flows. |
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// ------------------------------------------------------------------------- |
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document.addEventListener( 'submit', function () { |
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// Use a longer delay for standard (non-AJAX) submissions |
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// because the server needs time to process the request. |
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setTimeout( checkForError, 1500 ); |
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}, true ); |
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|
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// ------------------------------------------------------------------------- |
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// Generic AJAX interception |
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// Catches all AJAX calls to detect form submissions from plugins |
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// that don't fire specific events (e.g., Avada, Elementor). |
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// ------------------------------------------------------------------------- |
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|
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// Intercept fetch() |
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if ( typeof window.fetch === 'function' ) { |
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var originalFetch = window.fetch; |
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window.fetch = function () { |
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// Capture URL before the async call — `arguments` inside .then() |
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// refers to the callback's own arguments, not the fetch arguments. |
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var fetchUrl = ( typeof arguments[0] === 'string' ) |
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? arguments[0] |
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: ( arguments[0] && arguments[0].url ) || ''; |
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|
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return originalFetch.apply( this, arguments ).then( function ( response ) { |
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if ( fetchUrl && fetchUrl.indexOf( 'admin-ajax.php' ) !== -1 ) { |
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scheduleCheck(); |
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} |
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return response; |
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} ); |
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}; |
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} |
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|
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// Intercept XMLHttpRequest for jQuery.ajax based form plugins |
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var origOpen = XMLHttpRequest.prototype.open; |
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XMLHttpRequest.prototype.open = function ( method, url ) { |
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// Skip our own internal error-check requests to prevent infinite polling loops |
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if ( typeof url === 'string' && url.indexOf( 'admin-ajax.php' ) !== -1 && ! this._doiInternal ) { |
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this.addEventListener( 'load', scheduleCheck ); |
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} |
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return origOpen.apply( this, arguments ); |
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}; |
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|
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})(); |
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|
