jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2022, Andrew Kaster <akaster@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <AK/Vector.h>
8#include <LibWeb/Bindings/ExceptionOrUtils.h>
9#include <LibWeb/Bindings/WorkerGlobalScopePrototype.h>
10#include <LibWeb/Forward.h>
11#include <LibWeb/HTML/EventHandler.h>
12#include <LibWeb/HTML/EventNames.h>
13#include <LibWeb/HTML/WorkerGlobalScope.h>
14#include <LibWeb/HTML/WorkerLocation.h>
15#include <LibWeb/HTML/WorkerNavigator.h>
16
17namespace Web::HTML {
18
19WorkerGlobalScope::WorkerGlobalScope(JS::Realm& realm)
20 : DOM::EventTarget(realm)
21
22{
23}
24
25WorkerGlobalScope::~WorkerGlobalScope() = default;
26
27JS::ThrowCompletionOr<void> WorkerGlobalScope::initialize(JS::Realm& realm)
28{
29 MUST_OR_THROW_OOM(Base::initialize(realm));
30 m_navigator = TRY(Bindings::throw_dom_exception_if_needed(realm.vm(), [&]() {
31 return WorkerNavigator::create(*this);
32 }));
33
34 return {};
35}
36
37void WorkerGlobalScope::visit_edges(Cell::Visitor& visitor)
38{
39 Base::visit_edges(visitor);
40 visitor.visit(m_location.ptr());
41 visitor.visit(m_navigator.ptr());
42}
43
44// https://html.spec.whatwg.org/multipage/workers.html#importing-scripts-and-libraries
45WebIDL::ExceptionOr<void> WorkerGlobalScope::import_scripts(Vector<String> urls)
46{
47 // The algorithm may optionally be customized by supplying custom perform the fetch hooks,
48 // which if provided will be used when invoking fetch a classic worker-imported script.
49 // NOTE: Service Workers is an example of a specification that runs this algorithm with its own options for the perform the fetch hook.
50
51 // FIXME: 1. If worker global scope's type is "module", throw a TypeError exception.
52 // FIXME: 2. Let settings object be the current settings object.
53
54 // 3. If urls is empty, return.
55 if (urls.is_empty())
56 return {};
57
58 // FIXME: 4. Parse each value in urls relative to settings object. If any fail, throw a "SyntaxError" DOMException.
59 // FIXME: 5. For each url in the resulting URL records, run these substeps:
60 // 1. Fetch a classic worker-imported script given url and settings object, passing along any custom perform the fetch steps provided.
61 // If this succeeds, let script be the result. Otherwise, rethrow the exception.
62 // 2. Run the classic script script, with the rethrow errors argument set to true.
63 // NOTE: script will run until it either returns, fails to parse, fails to catch an exception,
64 // or gets prematurely aborted by the terminate a worker algorithm defined above.
65 // If an exception was thrown or if the script was prematurely aborted, then abort all these steps,
66 // letting the exception or aborting continue to be processed by the calling script.
67
68 return {};
69}
70
71// https://html.spec.whatwg.org/multipage/workers.html#dom-workerglobalscope-location
72JS::NonnullGCPtr<WorkerLocation> WorkerGlobalScope::location() const
73{
74 // The location attribute must return the WorkerLocation object whose associated WorkerGlobalScope object is the WorkerGlobalScope object.
75 return *m_location;
76}
77
78// https://html.spec.whatwg.org/multipage/workers.html#dom-worker-navigator
79JS::NonnullGCPtr<WorkerNavigator> WorkerGlobalScope::navigator() const
80{
81 // The navigator attribute of the WorkerGlobalScope interface must return an instance of the WorkerNavigator interface,
82 // which represents the identity and state of the user agent (the client).
83 return *m_navigator;
84}
85
86#undef __ENUMERATE
87#define __ENUMERATE(attribute_name, event_name) \
88 void WorkerGlobalScope::set_##attribute_name(WebIDL::CallbackType* value) \
89 { \
90 set_event_handler_attribute(event_name, move(value)); \
91 } \
92 WebIDL::CallbackType* WorkerGlobalScope::attribute_name() \
93 { \
94 return event_handler_attribute(event_name); \
95 }
96ENUMERATE_WORKER_GLOBAL_SCOPE_EVENT_HANDLERS(__ENUMERATE)
97#undef __ENUMERATE
98
99}