mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 14:52:43 +00:00
e22539bdd9
We treat all NativeFunctions as strict mode and thus window function which were called in a global context (i.e. `setTimeout(f, 0)`) got a null this_value. But we really need to treat all functions not defined by the ECMAScript specification as non-strict. In most cases this won't matter however since Window is also the global_object we have an extra bit of logic. To fix this more correctly we would need to track the strictness of NativeFunctions.
440 lines
14 KiB
C++
440 lines
14 KiB
C++
/*
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* Copyright (c) 2020-2021, Andreas Kling <kling@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 <AK/Base64.h>
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#include <AK/String.h>
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#include <AK/Utf8View.h>
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#include <LibJS/Runtime/Error.h>
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#include <LibJS/Runtime/FunctionObject.h>
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#include <LibJS/Runtime/Shape.h>
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#include <LibTextCodec/Decoder.h>
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#include <LibWeb/Bindings/DocumentWrapper.h>
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#include <LibWeb/Bindings/EventTargetConstructor.h>
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#include <LibWeb/Bindings/EventTargetPrototype.h>
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#include <LibWeb/Bindings/EventWrapper.h>
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#include <LibWeb/Bindings/EventWrapperFactory.h>
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#include <LibWeb/Bindings/LocationObject.h>
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#include <LibWeb/Bindings/NavigatorObject.h>
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#include <LibWeb/Bindings/NodeWrapperFactory.h>
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#include <LibWeb/Bindings/PerformanceWrapper.h>
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#include <LibWeb/Bindings/ScreenWrapper.h>
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#include <LibWeb/Bindings/WindowObject.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/DOM/Event.h>
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#include <LibWeb/DOM/Window.h>
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#include <LibWeb/Origin.h>
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#include <LibWeb/Page/BrowsingContext.h>
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#include <LibWeb/WebAssembly/WebAssemblyObject.h>
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#include <LibWeb/Bindings/WindowObjectHelper.h>
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namespace Web::Bindings {
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WindowObject::WindowObject(DOM::Window& impl)
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: m_impl(impl)
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{
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impl.set_wrapper({}, *this);
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}
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void WindowObject::initialize_global_object()
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{
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Base::initialize_global_object();
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auto success = Object::internal_set_prototype_of(&ensure_web_prototype<EventTargetPrototype>("EventTarget"));
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VERIFY(success);
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// FIXME: These should be native accessors, not properties
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define_direct_property("window", this, JS::Attribute::Enumerable);
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define_direct_property("frames", this, JS::Attribute::Enumerable);
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define_direct_property("self", this, JS::Attribute::Enumerable);
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define_native_accessor("top", top_getter, nullptr, JS::Attribute::Enumerable);
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define_native_accessor("parent", parent_getter, {}, JS::Attribute::Enumerable);
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define_native_accessor("document", document_getter, {}, JS::Attribute::Enumerable);
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define_native_accessor("performance", performance_getter, {}, JS::Attribute::Enumerable);
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define_native_accessor("screen", screen_getter, {}, JS::Attribute::Enumerable);
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define_native_accessor("innerWidth", inner_width_getter, {}, JS::Attribute::Enumerable);
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define_native_accessor("innerHeight", inner_height_getter, {}, JS::Attribute::Enumerable);
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u8 attr = JS::Attribute::Writable | JS::Attribute::Enumerable | JS::Attribute::Configurable;
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define_native_function("alert", alert, 0, attr);
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define_native_function("confirm", confirm, 0, attr);
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define_native_function("prompt", prompt, 0, attr);
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define_native_function("setInterval", set_interval, 1, attr);
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define_native_function("setTimeout", set_timeout, 1, attr);
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define_native_function("clearInterval", clear_interval, 1, attr);
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define_native_function("clearTimeout", clear_timeout, 1, attr);
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define_native_function("requestAnimationFrame", request_animation_frame, 1, attr);
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define_native_function("cancelAnimationFrame", cancel_animation_frame, 1, attr);
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define_native_function("atob", atob, 1, attr);
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define_native_function("btoa", btoa, 1, attr);
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// Legacy
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define_native_accessor("event", event_getter, {}, JS::Attribute::Enumerable);
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define_direct_property("navigator", heap().allocate<NavigatorObject>(*this, *this), JS::Attribute::Enumerable | JS::Attribute::Configurable);
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define_direct_property("location", heap().allocate<LocationObject>(*this, *this), JS::Attribute::Enumerable | JS::Attribute::Configurable);
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// WebAssembly "namespace"
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define_direct_property("WebAssembly", heap().allocate<WebAssemblyObject>(*this, *this), JS::Attribute::Enumerable | JS::Attribute::Configurable);
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ADD_WINDOW_OBJECT_INTERFACES;
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}
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WindowObject::~WindowObject()
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{
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}
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void WindowObject::visit_edges(Visitor& visitor)
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{
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GlobalObject::visit_edges(visitor);
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for (auto& it : m_prototypes)
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visitor.visit(it.value);
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for (auto& it : m_constructors)
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visitor.visit(it.value);
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}
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Origin WindowObject::origin() const
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{
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return impl().document().origin();
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}
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static DOM::Window* impl_from(JS::VM& vm, JS::GlobalObject& global_object)
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{
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// Since this is a non built-in function we must treat it as non-strict mode
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// this means that a nullish this_value should be converted to the
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// global_object. Generally this does not matter as we try to convert the
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// this_value to a specific object type in the bindings. But since window is
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// the global object we make an exception here.
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// This allows calls like `setTimeout(f, 10)` to work.
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auto this_value = vm.this_value(global_object);
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if (this_value.is_nullish()) {
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this_value = global_object.value_of();
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}
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auto* this_object = this_value.to_object(global_object);
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VERIFY(this_object);
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if (StringView("WindowObject") != this_object->class_name()) {
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vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotA, "WindowObject");
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return nullptr;
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}
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return &static_cast<WindowObject*>(this_object)->impl();
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::alert)
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{
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// https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#simple-dialogs
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// Note: This method is defined using two overloads, instead of using an optional argument,
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// for historical reasons. The practical impact of this is that alert(undefined) is
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// treated as alert("undefined"), but alert() is treated as alert("").
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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String message = "";
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if (vm.argument_count()) {
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message = vm.argument(0).to_string(global_object);
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if (vm.exception())
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return {};
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}
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impl->alert(message);
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return JS::js_undefined();
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::confirm)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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String message = "";
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if (!vm.argument(0).is_undefined()) {
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message = vm.argument(0).to_string(global_object);
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if (vm.exception())
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return {};
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}
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return JS::Value(impl->confirm(message));
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::prompt)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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String message = "";
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String default_ = "";
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if (!vm.argument(0).is_undefined()) {
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message = vm.argument(0).to_string(global_object);
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if (vm.exception())
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return {};
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}
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if (!vm.argument(1).is_undefined()) {
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default_ = vm.argument(1).to_string(global_object);
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if (vm.exception())
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return {};
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}
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auto response = impl->prompt(message, default_);
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if (response.is_null())
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return JS::js_null();
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return JS::js_string(vm, response);
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::set_interval)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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if (!vm.argument_count()) {
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vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::BadArgCountAtLeastOne, "setInterval");
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return {};
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}
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auto* callback_object = vm.argument(0).to_object(global_object);
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if (!callback_object)
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return {};
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if (!callback_object->is_function()) {
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vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotAFunctionNoParam);
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return {};
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}
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i32 interval = 0;
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if (vm.argument_count() >= 2) {
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interval = vm.argument(1).to_i32(global_object);
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if (vm.exception())
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return {};
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if (interval < 0)
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interval = 0;
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}
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auto timer_id = impl->set_interval(*static_cast<JS::FunctionObject*>(callback_object), interval);
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return JS::Value(timer_id);
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::set_timeout)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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if (!vm.argument_count()) {
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vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::BadArgCountAtLeastOne, "setTimeout");
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return {};
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}
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auto* callback_object = vm.argument(0).to_object(global_object);
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if (!callback_object)
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return {};
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if (!callback_object->is_function()) {
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vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotAFunctionNoParam);
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return {};
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}
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i32 interval = 0;
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if (vm.argument_count() >= 2) {
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interval = vm.argument(1).to_i32(global_object);
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if (vm.exception())
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return {};
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if (interval < 0)
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interval = 0;
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}
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auto timer_id = impl->set_timeout(*static_cast<JS::FunctionObject*>(callback_object), interval);
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return JS::Value(timer_id);
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::clear_timeout)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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if (!vm.argument_count()) {
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vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::BadArgCountAtLeastOne, "clearTimeout");
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return {};
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}
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i32 timer_id = vm.argument(0).to_i32(global_object);
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if (vm.exception())
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return {};
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impl->clear_timeout(timer_id);
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return JS::js_undefined();
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::clear_interval)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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if (!vm.argument_count()) {
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vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::BadArgCountAtLeastOne, "clearInterval");
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return {};
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}
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i32 timer_id = vm.argument(0).to_i32(global_object);
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if (vm.exception())
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return {};
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impl->clear_timeout(timer_id);
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return JS::js_undefined();
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::request_animation_frame)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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if (!vm.argument_count()) {
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vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::BadArgCountOne, "requestAnimationFrame");
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return {};
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}
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auto* callback_object = vm.argument(0).to_object(global_object);
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if (!callback_object)
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return {};
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if (!callback_object->is_function()) {
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vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotAFunctionNoParam);
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return {};
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}
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return JS::Value(impl->request_animation_frame(*static_cast<JS::FunctionObject*>(callback_object)));
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::cancel_animation_frame)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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if (!vm.argument_count()) {
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vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::BadArgCountOne, "cancelAnimationFrame");
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return {};
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}
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auto id = vm.argument(0).to_i32(global_object);
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if (vm.exception())
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return {};
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impl->cancel_animation_frame(id);
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return JS::js_undefined();
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::atob)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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if (!vm.argument_count()) {
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vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::BadArgCountOne, "atob");
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return {};
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}
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auto string = vm.argument(0).to_string(global_object);
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if (vm.exception())
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return {};
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auto decoded = decode_base64(StringView(string));
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// decode_base64() returns a byte string. LibJS uses UTF-8 for strings. Use Latin1Decoder to convert bytes 128-255 to UTF-8.
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auto decoder = TextCodec::decoder_for("windows-1252");
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VERIFY(decoder);
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return JS::js_string(vm, decoder->to_utf8(decoded));
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::btoa)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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if (!vm.argument_count()) {
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vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::BadArgCountOne, "btoa");
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return {};
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}
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auto string = vm.argument(0).to_string(global_object);
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if (vm.exception())
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return {};
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Vector<u8> byte_string;
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byte_string.ensure_capacity(string.length());
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for (u32 code_point : Utf8View(string)) {
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if (code_point > 0xff) {
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vm.throw_exception<JS::InvalidCharacterError>(global_object, JS::ErrorType::NotAByteString, "btoa");
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return {};
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}
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byte_string.append(code_point);
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}
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auto encoded = encode_base64(byte_string.span());
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return JS::js_string(vm, move(encoded));
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}
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// https://html.spec.whatwg.org/multipage/browsers.html#dom-top
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::top_getter)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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auto* this_browsing_context = impl->document().browsing_context();
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if (!this_browsing_context)
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return JS::js_null();
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VERIFY(this_browsing_context->top_level_browsing_context().document());
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auto& top_window = this_browsing_context->top_level_browsing_context().document()->window();
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return top_window.wrapper();
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}
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// https://html.spec.whatwg.org/multipage/browsers.html#dom-parent
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::parent_getter)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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auto* this_browsing_context = impl->document().browsing_context();
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if (!this_browsing_context)
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return JS::js_null();
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if (this_browsing_context->parent()) {
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VERIFY(this_browsing_context->parent()->document());
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auto& parent_window = this_browsing_context->parent()->document()->window();
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return parent_window.wrapper();
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}
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VERIFY(this_browsing_context == &this_browsing_context->top_level_browsing_context());
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return impl->wrapper();
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::document_getter)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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return wrap(global_object, impl->document());
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::performance_getter)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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return wrap(global_object, impl->performance());
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::screen_getter)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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return wrap(global_object, impl->screen());
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::event_getter)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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if (!impl->current_event())
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return JS::js_undefined();
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return wrap(global_object, const_cast<DOM::Event&>(*impl->current_event()));
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::inner_width_getter)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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return JS::Value(impl->inner_width());
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}
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JS_DEFINE_NATIVE_FUNCTION(WindowObject::inner_height_getter)
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{
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auto* impl = impl_from(vm, global_object);
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if (!impl)
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return {};
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return JS::Value(impl->inner_height());
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}
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}
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