LibWeb: Add stub IDL interface for AudioScheduledSourceNode

This is a base class of a few different audio nodes, most notably for
our immediate needs - OscillatorNode.

Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp

@@ -35,6 +35,7 @@ static bool is_platform_object(Type const& type)
         "Attr"sv,
         "AudioNode"sv,
         "AudioParam"sv,
+        "AudioScheduledSourceNode"sv,
         "AudioTrack"sv,
         "BaseAudioContext"sv,
         "Blob"sv,

Userland/Libraries/LibWeb/CMakeLists.txt

@@ -661,6 +661,7 @@ set(SOURCES
     WebAudio/AudioContext.cpp
     WebAudio/AudioNode.cpp
     WebAudio/AudioParam.cpp
+    WebAudio/AudioScheduledSourceNode.cpp
     WebAudio/BaseAudioContext.cpp
     WebAudio/OfflineAudioContext.cpp
     WebAudio/PeriodicWave.cpp

Userland/Libraries/LibWeb/Forward.h

@@ -683,6 +683,7 @@ namespace Web::WebAudio {
 class AudioContext;
 class AudioNode;
 class AudioParam;
+class AudioScheduledSourceNode;
 class BaseAudioContext;
 class OfflineAudioContext;
 class PeriodicWave;

Userland/Libraries/LibWeb/WebAudio/AudioScheduledSourceNode.cpp

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2024, Shannon Booth <shannon@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/Bindings/AudioScheduledSourceNodePrototype.h>
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/HTML/EventNames.h>
+#include <LibWeb/WebAudio/AudioScheduledSourceNode.h>
+
+namespace Web::WebAudio {
+
+JS_DEFINE_ALLOCATOR(AudioScheduledSourceNode);
+
+AudioScheduledSourceNode::~AudioScheduledSourceNode() = default;
+
+// https://webaudio.github.io/web-audio-api/#dom-audioscheduledsourcenode-onended
+JS::GCPtr<WebIDL::CallbackType> AudioScheduledSourceNode::onended()
+{
+    return event_handler_attribute(HTML::EventNames::ended);
+}
+
+// https://webaudio.github.io/web-audio-api/#dom-audioscheduledsourcenode-onended
+void AudioScheduledSourceNode::set_onended(JS::GCPtr<WebIDL::CallbackType> value)
+{
+    set_event_handler_attribute(HTML::EventNames::ended, value);
+}
+
+// https://webaudio.github.io/web-audio-api/#dom-audioscheduledsourcenode-start
+WebIDL::ExceptionOr<void> AudioScheduledSourceNode::start(double when)
+{
+    (void)when;
+    return WebIDL::NotSupportedError::create(realm(), "FIXME: Implement AudioScheduledSourceNode::start"_fly_string);
+}
+
+// https://webaudio.github.io/web-audio-api/#dom-audioscheduledsourcenode-stop
+WebIDL::ExceptionOr<void> AudioScheduledSourceNode::stop(double when)
+{
+    (void)when;
+    return WebIDL::NotSupportedError::create(realm(), "FIXME: Implement AudioScheduledSourceNode::stop"_fly_string);
+}
+
+void AudioScheduledSourceNode::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(AudioScheduledSourceNode);
+}
+
+void AudioScheduledSourceNode::visit_edges(Cell::Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+}
+
+}

Userland/Libraries/LibWeb/WebAudio/AudioScheduledSourceNode.h

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2024, Shannon Booth <shannon@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/WebAudio/AudioNode.h>
+
+namespace Web::WebAudio {
+
+// https://webaudio.github.io/web-audio-api/#AudioScheduledSourceNode
+class AudioScheduledSourceNode : public AudioNode {
+    WEB_PLATFORM_OBJECT(AudioScheduledSourceNode, AudioNode);
+    JS_DECLARE_ALLOCATOR(AudioScheduledSourceNode);
+
+public:
+    virtual ~AudioScheduledSourceNode() override;
+
+    JS::GCPtr<WebIDL::CallbackType> onended();
+    void set_onended(JS::GCPtr<WebIDL::CallbackType>);
+
+    WebIDL::ExceptionOr<void> start(double when = 0);
+    WebIDL::ExceptionOr<void> stop(double when = 0);
+
+protected:
+    virtual void initialize(JS::Realm&) override;
+    virtual void visit_edges(Cell::Visitor&) override;
+};
+
+}

Userland/Libraries/LibWeb/WebAudio/AudioScheduledSourceNode.idl

@@ -0,0 +1,10 @@
+#import <DOM/EventHandler.idl>
+#import <WebAudio/AudioNode.idl>
+
+// https://webaudio.github.io/web-audio-api/#AudioScheduledSourceNode
+[Exposed=Window]
+interface AudioScheduledSourceNode : AudioNode {
+    attribute EventHandler onended;
+    undefined start(optional double when = 0);
+    undefined stop(optional double when = 0);
+};

Userland/Libraries/LibWeb/idl_files.cmake

@@ -297,6 +297,7 @@ libweb_js_bindings(WebAudio/AudioBuffer)
 libweb_js_bindings(WebAudio/AudioContext)
 libweb_js_bindings(WebAudio/AudioNode)
 libweb_js_bindings(WebAudio/AudioParam)
+libweb_js_bindings(WebAudio/AudioScheduledSourceNode)
 libweb_js_bindings(WebAudio/BaseAudioContext)
 libweb_js_bindings(WebAudio/OfflineAudioContext)
 libweb_js_bindings(WebAudio/PeriodicWave)