LibWeb: Support autocomplete attribute on form elements

Implement proper support for the `autocomplete` attribute in `input`, `select` and `textarea` elements.
Author: https://github.com/devgianlu Commit: b8f234719d Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3517 Reviewed-by: https://github.com/ADKaster Reviewed-by: https://github.com/tcl3 ✅
2025-07-31 21:29:06 +00:00 · 2025-02-09 15:56:54 +01:00 · 2025-02-09 15:56:54 +01:00 · b8f234719d · 2025-02-26 07:02:12 +00:00
commit b8f234719d
parent 2d7080ecb3
11 changed files with 644 additions and 9 deletions
--- a/Libraries/LibWeb/HTML/AutocompleteElement.h
+++ b/Libraries/LibWeb/HTML/AutocompleteElement.h
@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2025, Altomani Gianluca <altomanigianluca@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/HTML/FormAssociatedElement.h>
+
+namespace Web::HTML {
+
+#define AUTOCOMPLETE_ELEMENT(ElementBaseClass, ElementClass)             \
+private:                                                                 \
+    virtual HTMLElement& autocomplete_element_to_html_element() override \
+    {                                                                    \
+        static_assert(IsBaseOf<HTMLElement, ElementClass>);              \
+        static_assert(IsBaseOf<FormAssociatedElement, ElementClass>);    \
+        return *this;                                                    \
+    }
+
+class AutocompleteElement {
+public:
+    enum class AutofillMantle {
+        Anchor,
+        Expectation,
+    };
+    AutofillMantle get_autofill_mantle() const;
+
+    Vector<String> autocomplete_tokens() const;
+    String autocomplete() const;
+    WebIDL::ExceptionOr<void> set_autocomplete(String const&);
+
+    // Each input element to which the autocomplete attribute applies [...] has
+    // an autofill hint set, an autofill scope, an autofill field name,
+    // a non-autofill credential type, and an IDL-exposed autofill value.
+    struct AttributeDetails {
+        Vector<String> hint_set;
+        Vector<String> scope;
+        String field_name;
+        Optional<String> credential_type;
+        String value;
+    };
+    AttributeDetails parse_autocomplete_attribute() const;
+
+    virtual HTMLElement& autocomplete_element_to_html_element() = 0;
+    HTMLElement const& autocomplete_element_to_html_element() const { return const_cast<AutocompleteElement&>(*this).autocomplete_element_to_html_element(); }
+
+protected:
+    AutocompleteElement() = default;
+    virtual ~AutocompleteElement() = default;
+};
+
+}