LibWeb: Implement navigator.{plugins,mimeTypes}

Userland/Libraries/LibWeb/HTML/Plugin.cpp

@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2023, Luke Wilde <lukew@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/HTML/Plugin.h>
+#include <LibWeb/HTML/Scripting/Environments.h>
+#include <LibWeb/HTML/Window.h>
+#include <LibWeb/Page/Page.h>
+
+namespace Web::HTML {
+
+Plugin::Plugin(JS::Realm& realm, String const& name)
+    : Bindings::LegacyPlatformObject(realm)
+    , m_name(name)
+{
+}
+
+Plugin::~Plugin() = default;
+
+JS::ThrowCompletionOr<void> Plugin::initialize(JS::Realm& realm)
+{
+    MUST_OR_THROW_OOM(Base::initialize(realm));
+    set_prototype(&Bindings::ensure_web_prototype<Bindings::PluginPrototype>(realm, "Plugin"));
+
+    return {};
+}
+
+// https://html.spec.whatwg.org/multipage/system-state.html#dom-plugin-name
+String const& Plugin::name() const
+{
+    // The Plugin interface's name getter steps are to return this's name.
+    return m_name;
+}
+
+// https://html.spec.whatwg.org/multipage/system-state.html#dom-plugin-description
+JS::ThrowCompletionOr<String> Plugin::description() const
+{
+    // The Plugin interface's description getter steps are to return "Portable Document Format".
+    static String description_string = TRY_OR_THROW_OOM(vm(), String::from_utf8("Portable Document Format"sv));
+    return description_string;
+}
+
+// https://html.spec.whatwg.org/multipage/system-state.html#dom-plugin-filename
+JS::ThrowCompletionOr<String> Plugin::filename() const
+{
+    // The Plugin interface's filename getter steps are to return "internal-pdf-viewer".
+    static String filename_string = TRY_OR_THROW_OOM(vm(), String::from_utf8("internal-pdf-viewer"sv));
+    return filename_string;
+}
+
+// https://html.spec.whatwg.org/multipage/system-state.html#pdf-viewing-support:support-named-properties-3
+Vector<DeprecatedString> Plugin::supported_property_names() const
+{
+    // The Plugin interface supports named properties. If the user agent's PDF viewer supported is true, then they are the PDF viewer mime types. Otherwise, they are the empty list.
+    auto const& window = verify_cast<HTML::Window>(HTML::relevant_global_object(*this));
+    VERIFY(window.page());
+    if (!window.page()->pdf_viewer_supported())
+        return {};
+
+    // https://html.spec.whatwg.org/multipage/system-state.html#pdf-viewer-mime-types
+    static Vector<DeprecatedString> mime_types = {
+        "application/pdf"sv,
+        "text/pdf"sv,
+    };
+
+    return mime_types;
+}
+
+// https://html.spec.whatwg.org/multipage/system-state.html#pdf-viewing-support:supports-indexed-properties-3
+bool Plugin::is_supported_property_index(u32 index) const
+{
+    // The Plugin interface supports indexed properties. The supported property indices are the indices of this's relevant global object's PDF viewer mime type objects.
+    auto& window = verify_cast<HTML::Window>(HTML::relevant_global_object(*this));
+    return index < window.pdf_viewer_mime_type_objects().size();
+}
+
+// https://html.spec.whatwg.org/multipage/system-state.html#dom-plugin-length
+size_t Plugin::length() const
+{
+    // The Plugin interface's length getter steps are to return this's relevant global object's PDF viewer mime type objects's size.
+    auto& window = verify_cast<HTML::Window>(HTML::relevant_global_object(*this));
+    return window.pdf_viewer_mime_type_objects().size();
+}
+
+// https://html.spec.whatwg.org/multipage/system-state.html#dom-plugin-item
+JS::GCPtr<MimeType> Plugin::item(u32 index) const
+{
+    // 1. Let mimeTypes be this's relevant global object's PDF viewer mime type objects.
+    auto& window = verify_cast<HTML::Window>(HTML::relevant_global_object(*this));
+    auto mime_types = window.pdf_viewer_mime_type_objects();
+
+    // 2. If index < mimeType's size, then return mimeTypes[index].
+    if (index < mime_types.size())
+        return mime_types[index];
+
+    // 3. Return null.
+    return nullptr;
+}
+
+JS::GCPtr<MimeType> Plugin::named_item(String const& name) const
+{
+    // 1. For each MimeType mimeType of this's relevant global object's PDF viewer mime type objects: if mimeType's type is name, then return mimeType.
+    auto& window = verify_cast<HTML::Window>(HTML::relevant_global_object(*this));
+    auto mime_types = window.pdf_viewer_mime_type_objects();
+
+    for (auto& mime_type : mime_types) {
+        if (mime_type->type() == name)
+            return mime_type;
+    }
+
+    // 2. Return null.
+    return nullptr;
+}
+
+WebIDL::ExceptionOr<JS::Value> Plugin::item_value(size_t index) const
+{
+    auto return_value = item(index);
+    if (!return_value)
+        return JS::js_null();
+    return return_value.ptr();
+}
+
+WebIDL::ExceptionOr<JS::Value> Plugin::named_item_value(DeprecatedFlyString const& name) const
+{
+    auto converted_name = TRY_OR_THROW_OOM(vm(), String::from_deprecated_string(name));
+    auto return_value = named_item(converted_name);
+    if (!return_value)
+        return JS::js_null();
+    return return_value.ptr();
+}
+
+}