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LibWeb: Implement the window.opener attribute

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This returns a reference to the window that opened the current window.
This commit is contained in:
Tim Ledbetter 2024-03-12 23:39:59 +00:00 • committed by Sam Atkins
parent 5713c2ffdd
commit fc1f037cd1
5 changed files with 63 additions and 0 deletions
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35
Userland/Libraries/LibWeb/HTML/Window.cpp
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@ -946,6 +946,41 @@ JS::GCPtr<WindowProxy const> Window::top() const
return navigable->top_level_traversable()->active_window_proxy();
}
// https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-opener
JS::GCPtr<WindowProxy const> Window::opener() const
{
// 1. Let current be this's browsing context.
auto const* current = browsing_context();
// 2. If current is null, then return null.
if (!current)
return {};
// 3. If current's opener browsing context is null, then return null.
auto opener_browsing_context = current->opener_browsing_context();
if (!opener_browsing_context)
return {};
// 4. Return current's opener browsing context's WindowProxy object.
return opener_browsing_context->window_proxy();
}
WebIDL::ExceptionOr<void> Window::set_opener(JS::Value value)
{
// 1. If the given value is null and this's browsing context is non-null, then set this's browsing context's opener browsing context to null.
auto* browsing_context = this->browsing_context();
if (value.is_null() && browsing_context)
browsing_context->set_opener_browsing_context(nullptr);
// 2. If the given value is non-null, then perform ? DefinePropertyOrThrow(this, "opener", { [[Value]]: the given value, [[Writable]]: true, [[Enumerable]]: true, [[Configurable]]: true }).
if (!value.is_null()) {
static JS::PropertyKey opener_property_key { "opener", JS::PropertyKey::StringMayBeNumber::No };
TRY(define_property_or_throw(opener_property_key, { .value = value, .writable = true, .enumerable = true, .configurable = true }));
}
return {};
}
// https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-parent
JS::GCPtr<WindowProxy const> Window::parent() const
{