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LibWeb: Implement window.length

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networkException 2022-09-06 19:56:29 +02:00 • committed by Linus Groh
parent b70e4e9909
commit e377e28fd2
4 changed files with 53 additions and 0 deletions
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24
Userland/Libraries/LibWeb/HTML/Window.cpp
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@ -794,6 +794,7 @@ void Window::initialize(JS::Realm& realm)
define_native_accessor(realm, "pageXOffset", scroll_x_getter, {}, attr);
define_native_accessor(realm, "scrollY", scroll_y_getter, {}, attr);
define_native_accessor(realm, "pageYOffset", scroll_y_getter, {}, attr);
define_native_accessor(realm, "length", length_getter, {}, attr);
define_native_function(realm, "scroll", scroll, 2, attr);
define_native_function(realm, "scrollTo", scroll, 2, attr);
@ -1074,6 +1075,29 @@ JS_DEFINE_NATIVE_FUNCTION(Window::btoa)
return JS::js_string(vm, move(encoded));
}
// https://html.spec.whatwg.org/multipage/window-object.html#number-of-document-tree-child-browsing-contexts
JS::ThrowCompletionOr<size_t> Window::document_tree_child_browsing_context_count() const
{
auto* impl = TRY(impl_from(vm()));
// 1. If W's browsing context is null, then return 0.
auto* this_browsing_context = impl->associated_document().browsing_context();
if (!this_browsing_context)
return 0;
// 2. Return the number of document-tree child browsing contexts of W's browsing context.
return this_browsing_context->document_tree_child_browsing_context_count();
}
// https://html.spec.whatwg.org/multipage/window-object.html#dom-length
JS_DEFINE_NATIVE_FUNCTION(Window::length_getter)
{
auto* impl = TRY(impl_from(vm));
// The length getter steps are to return the number of document-tree child browsing contexts of this.
return TRY(impl->document_tree_child_browsing_context_count());
}
// https://html.spec.whatwg.org/multipage/browsers.html#dom-top
JS_DEFINE_NATIVE_FUNCTION(Window::top_getter)
{