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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/core/animation/deferred_timeline.h"
namespace blink {
DeferredTimeline::DeferredTimeline(Document* document)
: ScrollSnapshotTimeline(document) {}
void DeferredTimeline::AttachTimeline(ScrollSnapshotTimeline* timeline) {
ScrollSnapshotTimeline* original_timeline = SingleAttachedTimeline();
attached_timelines_.push_back(timeline);
if (original_timeline != SingleAttachedTimeline()) {
OnAttachedTimelineChange();
}
}
void DeferredTimeline::DetachTimeline(ScrollSnapshotTimeline* timeline) {
ScrollSnapshotTimeline* original_timeline = SingleAttachedTimeline();
wtf_size_t i = attached_timelines_.Find(timeline);
if (i != kNotFound) {
attached_timelines_.EraseAt(i);
}
if (original_timeline != SingleAttachedTimeline()) {
OnAttachedTimelineChange();
}
}
void DeferredTimeline::Trace(Visitor* visitor) const {
visitor->Trace(attached_timelines_);
ScrollSnapshotTimeline::Trace(visitor);
}
DeferredTimeline::ScrollAxis DeferredTimeline::GetAxis() const {
if (const ScrollSnapshotTimeline* attached_timeline =
SingleAttachedTimeline()) {
return attached_timeline->GetAxis();
}
return ScrollAxis::kBlock;
}
DeferredTimeline::TimelineState DeferredTimeline::ComputeTimelineState() const {
if (const ScrollSnapshotTimeline* attached_timeline =
SingleAttachedTimeline()) {
return attached_timeline->ComputeTimelineState();
}
return TimelineState();
}
void DeferredTimeline::OnAttachedTimelineChange() {
compositor_timeline_ = nullptr;
MarkAnimationsCompositorPending(/* source_changed */ true);
}
} // namespace blink
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