1 files changed, 48 insertions, 0 deletions
diff --git a/toolkit/components/passwordmgr/LoginManager.shared.mjs b/toolkit/components/passwordmgr/LoginManager.shared.mjs
new file mode 100644
index 0000000000..bacbfc8696
--- /dev/null
+++ b/toolkit/components/passwordmgr/LoginManager.shared.mjs
@@ -0,0 +1,48 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Code that we can share across Firefox Desktop, Firefox Android and Firefox iOS.
+ */
+
+class Logic {
+  static inputTypeIsCompatibleWithUsername(input) {
+    const fieldType = input.getAttribute("type")?.toLowerCase() || input.type;
+    return (
+      fieldType == "text" ||
+      fieldType == "email" ||
+      fieldType == "url" ||
+      fieldType == "tel" ||
+      fieldType == "number" ||
+      fieldType == "search"
+    );
+  }
+
+  /**
+   * Test whether the element has the keyword in its attributes.
+   * The tested attributes include id, name, className, and placeholder.
+   */
+  static elementAttrsMatchRegex(element, regex) {
+    if (
+      regex.test(element.id) ||
+      regex.test(element.name) ||
+      regex.test(element.className)
+    ) {
+      return true;
+    }
+
+    const placeholder = element.getAttribute("placeholder");
+    return placeholder && regex.test(placeholder);
+  }
+
+  /**
+   * Test whether associated labels of the element have the keyword.
+   * This is a simplified rule of hasLabelMatchingRegex in NewPasswordModel.jsm
+   */
+  static hasLabelMatchingRegex(element, regex) {
+    return regex.test(element.labels?.[0]?.textContent);
+  }
+}
+
+export { Logic };