LibWeb: Implement the translate attribute

Author: https://github.com/Calme1709
Commit: 279913a223
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4855
Reviewed-by: https://github.com/gmta ✅

Libraries/LibWeb/HTML/AttributeNames.h

@@ -299,6 +299,7 @@ namespace AttributeNames {
     __ENUMERATE_HTML_ATTRIBUTE(text, "text")                                             \
     __ENUMERATE_HTML_ATTRIBUTE(title, "title")                                           \
     __ENUMERATE_HTML_ATTRIBUTE(topmargin, "topmargin")                                   \
+    __ENUMERATE_HTML_ATTRIBUTE(translate, "translate")                                   \
     __ENUMERATE_HTML_ATTRIBUTE(truespeed, "truespeed")                                   \
     __ENUMERATE_HTML_ATTRIBUTE(type, "type")                                             \
     __ENUMERATE_HTML_ATTRIBUTE(usemap, "usemap")                                         \

Libraries/LibWeb/HTML/HTMLElement.cpp

@@ -104,6 +104,25 @@ bool HTMLElement::is_potentially_render_blocking()
     return is_implicitly_potentially_render_blocking();
 }
 
+// https://html.spec.whatwg.org/multipage/dom.html#dom-translate
+bool HTMLElement::translate() const
+{
+    // The translate IDL attribute must, on getting, return true if the element's translation mode is
+    // translate-enabled, and false otherwise
+    return translation_mode() == TranslationMode::TranslateEnabled;
+}
+
+// https://html.spec.whatwg.org/multipage/dom.html#dom-translate
+void HTMLElement::set_translate(bool new_value)
+{
+    // On setting, it must set the content attribute's value to "yes" if the new value is true, and set the content
+    // attribute's value to "no" otherwise.
+    if (new_value)
+        MUST(set_attribute(HTML::AttributeNames::translate, "yes"_string));
+    else
+        MUST(set_attribute(HTML::AttributeNames::translate, "no"_string));
+}
+
 // https://html.spec.whatwg.org/multipage/dom.html#dom-dir
 StringView HTMLElement::dir() const
 {

Libraries/LibWeb/HTML/HTMLElement.h

@@ -82,6 +82,9 @@ public:
 
     Optional<String> title() const { return attribute(HTML::AttributeNames::title); }
 
+    bool translate() const;
+    void set_translate(bool);
+
     StringView dir() const;
     void set_dir(String const&);
 

Libraries/LibWeb/HTML/HTMLElement.idl

@@ -14,7 +14,7 @@ interface HTMLElement : Element {
     // metadata attributes
     [Reflect, CEReactions] attribute DOMString title;
     [Reflect, CEReactions] attribute DOMString lang;
-    [FIXME, CEReactions] attribute boolean translate;
+    [CEReactions] attribute boolean translate;
     [CEReactions] attribute DOMString dir;
 
     // user interaction