LibWeb: Add an empty DataTransferItemList IDL implementation

Author: https://github.com/trflynn89
Commit: https://github.com/LadybirdBrowser/ladybird/commit/dcb76572e4d
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/1111

Tests/LibWeb/Text/expected/all-window-properties.txt

@@ -75,6 +75,7 @@ DOMStringMap
 DOMTokenList
 DataTransfer
 DataTransferItem
+DataTransferItemList
 DataView
 Date
 DisposableStack

Userland/Libraries/LibWeb/CMakeLists.txt

@@ -276,6 +276,7 @@ set(SOURCES
     HTML/CustomElements/CustomElementRegistry.cpp
     HTML/DataTransfer.cpp
     HTML/DataTransferItem.cpp
+    HTML/DataTransferItemList.cpp
     HTML/Dates.cpp
     HTML/DecodedImageData.cpp
     HTML/DedicatedWorkerGlobalScope.cpp

Userland/Libraries/LibWeb/Forward.h

@@ -354,6 +354,7 @@ class CloseWatcherManager;
 class CustomElementDefinition;
 class CustomElementRegistry;
 class DataTransferItem;
+class DataTransferItemList;
 class DecodedImageData;
 class DocumentState;
 class DOMParser;

Userland/Libraries/LibWeb/HTML/DataTransferItemList.cpp

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2024, Tim Flynn <trflynn89@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Runtime/Realm.h>
+#include <LibWeb/Bindings/DataTransferItemListPrototype.h>
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/HTML/DataTransferItemList.h>
+
+namespace Web::HTML {
+
+JS_DEFINE_ALLOCATOR(DataTransferItemList);
+
+JS::NonnullGCPtr<DataTransferItemList> DataTransferItemList::construct_impl(JS::Realm& realm)
+{
+    return realm.heap().allocate<DataTransferItemList>(realm, realm);
+}
+
+DataTransferItemList::DataTransferItemList(JS::Realm& realm)
+    : PlatformObject(realm)
+{
+}
+
+DataTransferItemList::~DataTransferItemList() = default;
+
+void DataTransferItemList::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DataTransferItemList);
+}
+
+}

Userland/Libraries/LibWeb/HTML/DataTransferItemList.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2024, Tim Flynn <trflynn89@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibJS/Forward.h>
+#include <LibWeb/Bindings/PlatformObject.h>
+
+namespace Web::HTML {
+
+// https://html.spec.whatwg.org/multipage/dnd.html#the-datatransferitemlist-interface
+class DataTransferItemList : public Bindings::PlatformObject {
+    WEB_PLATFORM_OBJECT(DataTransferItemList, Bindings::PlatformObject);
+    JS_DECLARE_ALLOCATOR(DataTransferItemList);
+
+public:
+    static JS::NonnullGCPtr<DataTransferItemList> construct_impl(JS::Realm&);
+    virtual ~DataTransferItemList() override;
+
+private:
+    DataTransferItemList(JS::Realm&);
+
+    virtual void initialize(JS::Realm&) override;
+};
+
+}

Userland/Libraries/LibWeb/HTML/DataTransferItemList.idl

@@ -0,0 +1,12 @@
+#import <HTML/DataTransferItem.idl>
+
+// https://html.spec.whatwg.org/multipage/dnd.html#datatransferitemlist
+[Exposed=Window]
+interface DataTransferItemList {
+    [FIXME] readonly attribute unsigned long length;
+    [FIXME] getter DataTransferItem (unsigned long index);
+    [FIXME] DataTransferItem? add(DOMString data, DOMString type);
+    [FIXME] DataTransferItem? add(File data);
+    [FIXME] undefined remove(unsigned long index);
+    [FIXME] undefined clear();
+};

Userland/Libraries/LibWeb/idl_files.cmake

@@ -103,6 +103,7 @@ libweb_js_bindings(HTML/CloseWatcher)
 libweb_js_bindings(HTML/CustomElements/CustomElementRegistry)
 libweb_js_bindings(HTML/DataTransfer)
 libweb_js_bindings(HTML/DataTransferItem)
+libweb_js_bindings(HTML/DataTransferItemList)
 libweb_js_bindings(HTML/DedicatedWorkerGlobalScope GLOBAL)
 libweb_js_bindings(HTML/DOMParser)
 libweb_js_bindings(HTML/DOMStringList)