Release 2.8.6

src/web/public/js/web-ui-helpers.js

@@ -1,6 +1,98 @@
 // Shared browser helpers for web UI escaping and formatting.
 
 (function () {
+  var urlValidationMessage = 'Please enter a URL.';
+
+  function isUrlInput(input) {
+    return input && input.matches && input.matches('input[type="url"]');
+  }
+
+  function isValidHttpUrl(input) {
+    input.setCustomValidity('');
+    var value = String(input.value || '').trim();
+    var hasValidNativeUrl = input.validity.valid;
+    var hasExplicitHttpScheme = /^https?:\/\/[^\s]+$/i.test(value);
+    var isValid = hasValidNativeUrl && hasExplicitHttpScheme;
+    if (!isValid) {
+      input.setCustomValidity(urlValidationMessage);
+    }
+    return isValid;
+  }
+
+  function getUrlFeedback(input) {
+    if (input._urlFeedback && input._urlFeedback.parentNode) {
+      return input._urlFeedback;
+    }
+
+    var feedbackId = input.id ? input.id + '-url-feedback' : '';
+    var feedback = feedbackId ? document.getElementById(feedbackId) : null;
+    if (feedback) {
+      var inputGroup = input.closest ? input.closest('.input-group') : null;
+      var feedbackAnchor = inputGroup || input;
+      feedbackAnchor.parentNode.insertBefore(feedback, feedbackAnchor.nextSibling);
+      input._urlFeedback = feedback;
+      return feedback;
+    }
+
+    feedback = document.createElement('div');
+    if (feedbackId) {
+      feedback.id = feedbackId;
+    }
+    feedback.className = 'invalid-feedback';
+    feedback.setAttribute('role', 'alert');
+    feedback.textContent = urlValidationMessage;
+
+    var inputGroup = input.closest ? input.closest('.input-group') : null;
+    var feedbackAnchor = inputGroup || input;
+    feedbackAnchor.parentNode.insertBefore(feedback, feedbackAnchor.nextSibling);
+    if (input.id) {
+      input.setAttribute('aria-describedby', feedback.id);
+    }
+    input._urlFeedback = feedback;
+    return feedback;
+  }
+
+  function updateUrlValidation(input, showFeedback) {
+    if (!isUrlInput(input)) {
+      return true;
+    }
+
+    var isValid = isValidHttpUrl(input);
+    if (!isValid && showFeedback) {
+      var feedback = getUrlFeedback(input);
+      feedback.hidden = false;
+      feedback.classList.add('d-block');
+      input.classList.add('is-invalid');
+    } else if (isValid) {
+      if (input.id) {
+        document.querySelectorAll('[id="' + input.id + '-url-feedback"]').forEach(function (feedback) {
+          feedback.hidden = true;
+          feedback.classList.remove('d-block');
+        });
+      } else if (input._urlFeedback) {
+        input._urlFeedback.hidden = true;
+        input._urlFeedback.classList.remove('d-block');
+      }
+      input.classList.remove('is-invalid');
+    }
+
+    return isValid;
+  }
+
+  function initializeUrlValidation() {
+    document.addEventListener('input', function (event) {
+      if (isUrlInput(event.target)) {
+        updateUrlValidation(event.target, true);
+      }
+    });
+    document.addEventListener('invalid', function (event) {
+      if (isUrlInput(event.target)) {
+        event.preventDefault();
+        updateUrlValidation(event.target, true);
+      }
+    }, true);
+  }
+
   function escapeHtml(value) {
     return String(value ?? '')
       .replace(/&/g, '&')
@@ -97,6 +189,7 @@
   }
 
   window.escapeHtml = escapeHtml;
+  initializeUrlValidation();
 
   var defaultQrOptions = window.defaultQrOptions || {
     width: 1000,