mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-20 17:58:18 +03:00
b98a2be96b
Normally, assigning to e.g document.body.onload will forward to window.onload. However, in a detached DOM tree, there is no associated window, so we have nowhere to forward to, making this a no-op. The bulk of this change is making Document::window() return a nullable pointer, as documents created by DOMParser or DOMImplementation do not have an associated window object, and so must be able to return null from here.
84 lines
3.4 KiB
C++
84 lines
3.4 KiB
C++
/*
|
||
* Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>.
|
||
*
|
||
* SPDX-License-Identifier: BSD-2-Clause
|
||
*/
|
||
|
||
#include <LibJS/Heap/Heap.h>
|
||
#include <LibJS/Runtime/Realm.h>
|
||
#include <LibWeb/Animations/DocumentTimeline.h>
|
||
#include <LibWeb/DOM/Document.h>
|
||
#include <LibWeb/HTML/Window.h>
|
||
#include <LibWeb/HighResolutionTime/Performance.h>
|
||
#include <LibWeb/WebIDL/ExceptionOr.h>
|
||
|
||
namespace Web::Animations {
|
||
|
||
JS_DEFINE_ALLOCATOR(DocumentTimeline);
|
||
|
||
JS::NonnullGCPtr<DocumentTimeline> DocumentTimeline::create(JS::Realm& realm, DOM::Document& document, HighResolutionTime::DOMHighResTimeStamp origin_time)
|
||
{
|
||
auto timeline = realm.heap().allocate<DocumentTimeline>(realm, realm, document, origin_time);
|
||
timeline->set_current_time(document.window()->performance()->now());
|
||
return timeline;
|
||
}
|
||
|
||
// https://www.w3.org/TR/web-animations-1/#dom-documenttimeline-documenttimeline
|
||
WebIDL::ExceptionOr<JS::NonnullGCPtr<DocumentTimeline>> DocumentTimeline::construct_impl(JS::Realm& realm, DocumentTimelineOptions options)
|
||
{
|
||
// Creates a new DocumentTimeline. The Document with which the timeline is associated is the Document associated
|
||
// with the Window that is the current global object.
|
||
auto& window = verify_cast<HTML::Window>(realm.global_object());
|
||
return create(realm, window.associated_document(), options.origin_time);
|
||
}
|
||
|
||
// https://www.w3.org/TR/web-animations-1/#ref-for-timeline-time-to-origin-relative-time
|
||
Optional<double> DocumentTimeline::convert_a_timeline_time_to_an_origin_relative_time(Optional<double> timeline_time)
|
||
{
|
||
// To convert a timeline time, timeline time, to an origin-relative time for a document timeline, timeline, return
|
||
// the sum of the timeline time and timeline’s origin time. If timeline is inactive, return an unresolved time
|
||
// value.
|
||
if (is_inactive() || !timeline_time.has_value())
|
||
return {};
|
||
return timeline_time.value() + m_origin_time;
|
||
}
|
||
|
||
// https://www.w3.org/TR/web-animations-1/#origin-time
|
||
void DocumentTimeline::set_current_time(Optional<double> current_time)
|
||
{
|
||
// A document timeline is a type of timeline that is associated with a document and whose current time is calculated
|
||
// as a fixed offset from the now timestamp provided each time the update animations and send events procedure is
|
||
// run. This fixed offset is referred to as the document timeline’s origin time.
|
||
if (!current_time.has_value())
|
||
Base::set_current_time({});
|
||
else
|
||
Base::set_current_time(current_time.value() - m_origin_time);
|
||
|
||
// After a document timeline becomes active, it is monotonically increasing.
|
||
if (!is_inactive())
|
||
VERIFY(is_monotonically_increasing());
|
||
}
|
||
|
||
// https://www.w3.org/TR/web-animations-1/#document-timelines
|
||
bool DocumentTimeline::is_inactive() const
|
||
{
|
||
// A document timeline that is associated with a Document which is not an active document is also considered to be
|
||
// inactive.
|
||
return Base::is_inactive() || !associated_document()->is_active();
|
||
}
|
||
|
||
DocumentTimeline::DocumentTimeline(JS::Realm& realm, DOM::Document& document, HighResolutionTime::DOMHighResTimeStamp origin_time)
|
||
: AnimationTimeline(realm)
|
||
, m_origin_time(origin_time)
|
||
{
|
||
set_associated_document(document);
|
||
}
|
||
|
||
void DocumentTimeline::initialize(JS::Realm& realm)
|
||
{
|
||
Base::initialize(realm);
|
||
set_prototype(&Bindings::ensure_web_prototype<Bindings::DocumentTimelinePrototype>(realm, "DocumentTimeline"_fly_string));
|
||
}
|
||
|
||
}
|