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b84f8fb55b
Some of these are allocated upon initialization of the intrinsics, and some lazily, but in neither case the getters actually return a nullptr. This saves us a whole bunch of pointer dereferences (as NonnullGCPtr has an `operator T&()`), and also has the interesting side effect of forcing us to explicitly use the FunctionObject& overload of call(), as passing a NonnullGCPtr is ambigous - it could implicitly be turned into a Value _or_ a FunctionObject& (so we have to dereference manually).
67 lines
2.3 KiB
C++
67 lines
2.3 KiB
C++
/*
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* Copyright (c) 2022, Luke Wilde <lukew@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/AudioConstructor.h>
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#include <LibWeb/Bindings/ExceptionOrUtils.h>
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#include <LibWeb/Bindings/HTMLAudioElementPrototype.h>
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#include <LibWeb/DOM/ElementFactory.h>
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#include <LibWeb/HTML/Scripting/Environments.h>
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#include <LibWeb/HTML/Window.h>
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#include <LibWeb/Namespace.h>
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namespace Web::Bindings {
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AudioConstructor::AudioConstructor(JS::Realm& realm)
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: NativeFunction(realm.intrinsics().function_prototype())
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{
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}
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JS::ThrowCompletionOr<void> AudioConstructor::initialize(JS::Realm& realm)
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{
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auto& vm = this->vm();
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MUST_OR_THROW_OOM(NativeFunction::initialize(realm));
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define_direct_property(vm.names.prototype, &ensure_web_prototype<Bindings::HTMLAudioElementPrototype>(realm, "HTMLAudioElement"), 0);
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define_direct_property(vm.names.length, JS::Value(0), JS::Attribute::Configurable);
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return {};
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}
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JS::ThrowCompletionOr<JS::Value> AudioConstructor::call()
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{
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return vm().throw_completion<JS::TypeError>(JS::ErrorType::ConstructorWithoutNew, "Audio");
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}
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// https://html.spec.whatwg.org/multipage/media.html#dom-audio
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JS::ThrowCompletionOr<JS::NonnullGCPtr<JS::Object>> AudioConstructor::construct(FunctionObject&)
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{
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auto& vm = this->vm();
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// 1. Let document be the current global object's associated Document.
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auto& window = verify_cast<HTML::Window>(HTML::current_global_object());
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auto& document = window.associated_document();
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// 2. Let audio be the result of creating an element given document, audio, and the HTML namespace.
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auto audio = TRY(Bindings::throw_dom_exception_if_needed(vm, [&]() { return DOM::create_element(document, HTML::TagNames::audio, Namespace::HTML); }));
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// 3. Set an attribute value for audio using "preload" and "auto".
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MUST(audio->set_attribute(HTML::AttributeNames::preload, "auto"sv));
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auto src_value = vm.argument(0);
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// 4. If src is given, then set an attribute value for audio using "src" and src.
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// (This will cause the user agent to invoke the object's resource selection algorithm before returning.)
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if (!src_value.is_undefined()) {
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auto src = TRY(src_value.to_deprecated_string(vm));
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MUST(audio->set_attribute(HTML::AttributeNames::src, move(src)));
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}
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// 5. Return audio.
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return audio;
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}
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}
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