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https://github.com/LadybirdBrowser/ladybird.git
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5220d6d2e5
`$0` is a helpful variable in other browsers' JS consoles, which points to whichever DOM Node is currently selected in the DOM Inspector. And now we have it too! :^)
121 lines
3.6 KiB
C++
121 lines
3.6 KiB
C++
/*
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* Copyright (c) 2021, Sam Atkins <atkinssj@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 "ConsoleGlobalObject.h"
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#include <LibWeb/Bindings/NodeWrapper.h>
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#include <LibWeb/Bindings/NodeWrapperFactory.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/Window.h>
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namespace WebContent {
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ConsoleGlobalObject::ConsoleGlobalObject(Web::Bindings::WindowObject& parent_object)
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: m_window_object(&parent_object)
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{
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}
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ConsoleGlobalObject::~ConsoleGlobalObject()
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{
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}
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void ConsoleGlobalObject::initialize_global_object()
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{
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Base::initialize_global_object();
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// $0 magic variable
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define_native_accessor("$0", inspected_node_getter, nullptr, 0);
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}
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void ConsoleGlobalObject::visit_edges(Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_window_object);
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}
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JS::Object* ConsoleGlobalObject::internal_get_prototype_of() const
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{
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return m_window_object->internal_get_prototype_of();
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}
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bool ConsoleGlobalObject::internal_set_prototype_of(JS::Object* prototype)
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{
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return m_window_object->internal_set_prototype_of(prototype);
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}
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bool ConsoleGlobalObject::internal_is_extensible() const
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{
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return m_window_object->internal_is_extensible();
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}
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bool ConsoleGlobalObject::internal_prevent_extensions()
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{
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return m_window_object->internal_prevent_extensions();
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}
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Optional<JS::PropertyDescriptor> ConsoleGlobalObject::internal_get_own_property(JS::PropertyName const& property_name) const
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{
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if (auto result = m_window_object->internal_get_own_property(property_name); result.has_value())
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return result;
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return Base::internal_get_own_property(property_name);
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}
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bool ConsoleGlobalObject::internal_define_own_property(JS::PropertyName const& property_name, JS::PropertyDescriptor const& descriptor)
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{
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return m_window_object->internal_define_own_property(property_name, descriptor);
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}
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bool ConsoleGlobalObject::internal_has_property(JS::PropertyName const& property_name) const
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{
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return Object::internal_has_property(property_name) || m_window_object->internal_has_property(property_name);
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}
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JS::Value ConsoleGlobalObject::internal_get(JS::PropertyName const& property_name, JS::Value receiver) const
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{
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if (m_window_object->has_own_property(property_name))
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return m_window_object->internal_get(property_name, (receiver == this) ? m_window_object : receiver);
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return Base::internal_get(property_name, receiver);
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}
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bool ConsoleGlobalObject::internal_set(JS::PropertyName const& property_name, JS::Value value, JS::Value receiver)
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{
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return m_window_object->internal_set(property_name, value, (receiver == this) ? m_window_object : receiver);
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}
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bool ConsoleGlobalObject::internal_delete(JS::PropertyName const& property_name)
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{
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return m_window_object->internal_delete(property_name);
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}
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JS::MarkedValueList ConsoleGlobalObject::internal_own_property_keys() const
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{
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return m_window_object->internal_own_property_keys();
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}
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JS_DEFINE_NATIVE_GETTER(ConsoleGlobalObject::inspected_node_getter)
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{
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auto* this_object = vm.this_value(global_object).to_object(global_object);
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if (!this_object)
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return JS::js_null();
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if (!is<ConsoleGlobalObject>(this_object)) {
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vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotA, "ConsoleGlobalObject");
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return {};
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}
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auto console_global_object = static_cast<ConsoleGlobalObject*>(this_object);
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auto& window = console_global_object->m_window_object->impl();
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auto* inspected_node = window.document().inspected_node();
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if (!inspected_node)
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return JS::js_undefined();
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return Web::Bindings::wrap(global_object, *inspected_node);
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}
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}
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