LibWeb: Add support for select options disabled state

Author: https://github.com/bplaat
Commit: https://github.com/SerenityOS/serenity/commit/1475c1810f
Pull-request: https://github.com/SerenityOS/serenity/pull/23511
Reviewed-by: https://github.com/trflynn89

Base/res/html/misc/select.html

@@ -72,19 +72,16 @@
                 <option value="8.01.1">Lecture 01: Powers of Ten
                 <option value="8.01.2">Lecture 02: 1D Kinematics
                 <option value="8.01.3">Lecture 03: Vectors
-                <hr>
                 <option value="8.01.4">Lecture 04: Random
-            <optgroup label="8.02 Electricity and Magnetism">
+            <optgroup label="8.02 Electricity and Magnetism (disabled)" disabled>
                 <option value="8.02.1">Lecture 01: What holds our world together?
                 <option value="8.02.2">Lecture 02: Electric Field
                 <option value="8.02.3">Lecture 03: Electric Flux
-                <hr>
                 <option value="8.02.4">Lecture 04: Random
             <optgroup label="8.03 Physics III: Vibrations and Waves">
                 <option value="8.03.1">Lecture 01: Periodic Phenomenon
                 <option value="8.03.2">Lecture 02: Beats
                 <option value="8.03.3">Lecture 03: Forced Oscillations with Damping
-                <hr>
                 <option value="8.03.4">Lecture 04: Random
         </select>
         Value: <span id="c-value">?</span>

Ladybird/AppKit/UI/LadybirdWebView.mm

@@ -714,7 +714,7 @@ static void copy_data_to_clipboard(StringView data, NSPasteboardType pasteboard_
         auto add_menu_item = [self](Web::HTML::SelectItemOption const& item_option) {
             NSMenuItem* menuItem = [[NSMenuItem alloc]
                 initWithTitle:Ladybird::string_to_ns_string(item_option.label)
-                       action:@selector(selectDropdownAction:)
+                       action:item_option.disabled ? nil : @selector(selectDropdownAction:)
                 keyEquivalent:@""];
             menuItem.representedObject = [NSNumber numberWithUnsignedInt:item_option.id];
             menuItem.state = item_option.selected ? NSControlStateValueOn : NSControlStateValueOff;

Ladybird/Qt/Tab.cpp

@@ -336,6 +336,7 @@ Tab::Tab(BrowserWindow* window, WebContentOptions const& web_content_options, St
             QAction* action = new QAction(qstring_from_ak_string(item_option.label), this);
             action->setCheckable(true);
             action->setChecked(item_option.selected);
+            action->setDisabled(item_option.disabled);
             action->setData(QVariant(static_cast<uint>(item_option.id)));
             QObject::connect(action, &QAction::triggered, this, &Tab::select_dropdown_action);
             m_select_dropdown->addAction(action);

Userland/Applications/Browser/Tab.cpp

@@ -661,6 +661,7 @@ Tab::Tab(BrowserWindow& window)
             });
             action->set_checkable(true);
             action->set_checked(item_option.selected);
+            action->set_enabled(!item_option.disabled);
             m_select_dropdown->add_action(action);
         };
 

Userland/Libraries/LibWeb/HTML/HTMLSelectElement.cpp

@@ -290,7 +290,7 @@ void HTMLSelectElement::activation_behavior(DOM::Event const&)
             for (auto const& child : opt_group_element.children_as_vector()) {
                 if (is<HTMLOptionElement>(*child)) {
                     auto& option_element = verify_cast<HTMLOptionElement>(*child);
-                    option_group_items.append(SelectItemOption { id_counter++, strip_newlines(option_element.text_content()), option_element.value(), option_element.selected(), option_element });
+                    option_group_items.append(SelectItemOption { id_counter++, strip_newlines(option_element.text_content()), option_element.value(), option_element.selected(), option_element.disabled(), option_element });
                 }
             }
             m_select_items.append(SelectItemOptionGroup { opt_group_element.get_attribute(AttributeNames::label).value_or(String {}), option_group_items });
@@ -298,7 +298,7 @@ void HTMLSelectElement::activation_behavior(DOM::Event const&)
 
         if (is<HTMLOptionElement>(*child)) {
             auto& option_element = verify_cast<HTMLOptionElement>(*child);
-            m_select_items.append(SelectItemOption { id_counter++, strip_newlines(option_element.text_content()), option_element.value(), option_element.selected(), option_element });
+            m_select_items.append(SelectItemOption { id_counter++, strip_newlines(option_element.text_content()), option_element.value(), option_element.selected(), option_element.disabled(), option_element });
         }
 
         if (is<HTMLHRElement>(*child))

Userland/Libraries/LibWeb/HTML/SelectItem.cpp

@@ -15,6 +15,7 @@ ErrorOr<void> IPC::encode(Encoder& encoder, Web::HTML::SelectItemOption const& i
     TRY(encoder.encode(item.label));
     TRY(encoder.encode(item.value));
     TRY(encoder.encode(item.selected));
+    TRY(encoder.encode(item.disabled));
     return {};
 }
 
@@ -25,7 +26,8 @@ ErrorOr<Web::HTML::SelectItemOption> IPC::decode(Decoder& decoder)
     auto label = TRY(decoder.decode<String>());
     auto value = TRY(decoder.decode<String>());
     auto selected = TRY(decoder.decode<bool>());
-    return Web::HTML::SelectItemOption { id, move(label), move(value), selected };
+    auto disabled = TRY(decoder.decode<bool>());
+    return Web::HTML::SelectItemOption { id, move(label), move(value), selected, disabled };
 }
 
 template<>

Userland/Libraries/LibWeb/HTML/SelectItem.h

@@ -17,6 +17,7 @@ struct SelectItemOption {
     String label {};
     String value {};
     bool selected { false };
+    bool disabled { false };
     JS::GCPtr<HTMLOptionElement> option_element {};
 };