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/*
* Copyright (C) 2025 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "config.h"
#import "RemoteProgressBasedTimelineRegistry.h"
#if ENABLE(THREADED_ANIMATIONS)
#import "RemoteScrollingTree.h"
#import <WebCore/ScrollingTreeScrollingNode.h>
#import <wtf/TZoneMallocInlines.h>
namespace WebKit {
WTF_MAKE_TZONE_ALLOCATED_IMPL(RemoteProgressBasedTimelineRegistry);
void RemoteProgressBasedTimelineRegistry::update(const RemoteScrollingTree& scrollingTree, WebCore::ProcessIdentifier processIdentifier, const WebCore::AcceleratedTimelinesUpdate& timelinesUpdate)
{
auto& processTimelines = m_timelines.ensure(processIdentifier, [] {
return UncheckedKeyHashMap<WebCore::ScrollingNodeID, HashSet<Ref<RemoteProgressBasedTimeline>>>();
}).iterator->value;
using IterationCallback = const Function<void(const TimelineID&, WebCore::ProgressResolutionData)>;
auto forEachProgressBasedTimelineRepresentation = [&](const HashSet<Ref<WebCore::AcceleratedTimeline>>& timelineRepresentations, NOESCAPE IterationCallback& function) {
if (timelineRepresentations.isEmpty())
return;
for (auto& timelineRepresentation : timelineRepresentations) {
if (!timelineRepresentation->isProgressBased())
continue;
ASSERT(timelineRepresentation->progressResolutionData());
TimelineID timelineID { timelineRepresentation->identifier(), processIdentifier };
function(timelineID, *timelineRepresentation->progressResolutionData());
}
};
forEachProgressBasedTimelineRepresentation(timelinesUpdate.created, [&](auto timelineID, auto resolutionData) {
auto& sourceTimelines = processTimelines.ensure(resolutionData.source, [] {
return HashSet<Ref<RemoteProgressBasedTimeline>>();
}).iterator->value;
// There should not be a pre-existing timeline for this identifier since we're creating it.
ASSERT([&] {
for (auto& existingTimeline : sourceTimelines) {
if (existingTimeline->identifier() == timelineID)
return false;
}
return true;
}());
sourceTimelines.add(RemoteProgressBasedTimeline::create(timelineID, resolutionData));
});
forEachProgressBasedTimelineRepresentation(timelinesUpdate.modified, [&](auto timelineID, auto resolutionData) {
// FIXME: we should make it so that when we call this function we're
// guaranteed to have a matching source node and turn this into a Ref.
RefPtr sourceNode = dynamicDowncast<WebCore::ScrollingTreeScrollingNode>(Ref { scrollingTree }->nodeForID(resolutionData.source));
auto sourceIterator = processTimelines.find(resolutionData.source);
if (sourceIterator != processTimelines.end()) {
auto& existingTimelines = sourceIterator->value;
for (auto& existingTimeline : existingTimelines) {
if (existingTimeline->identifier() == timelineID) {
existingTimeline->setResolutionData(sourceNode.get(), resolutionData);
return;
}
}
}
// If we didn't find the timeline within the existing timelines for this source,
// it may previously have been associated with another source.
for (auto& [source, existingTimelines] : processTimelines) {
// We've already looked at the exisiting source.
if (source == resolutionData.source)
continue;
auto matchingTimelines = existingTimelines.takeIf([&](const auto& existingTimeline) {
return existingTimeline->identifier() == timelineID;
});
if (matchingTimelines.isEmpty())
continue;
ASSERT(matchingTimelines.size() == 1);
auto& existingTimeline = matchingTimelines[0];
existingTimeline->setResolutionData(sourceNode.get(), resolutionData);
// Move it to the right source.
processTimelines.ensure(existingTimeline->source(), [] {
return HashSet<Ref<RemoteProgressBasedTimeline>>();
}).iterator->value.add(existingTimeline.releaseNonNull());
return;
}
// If we reach this point, we've been told to update a timeline that did not exist.
ASSERT_NOT_REACHED();
});
HashSet<WebCore::ScrollingNodeID> emptySources;
for (auto& destroyedTimelineIdentifier : timelinesUpdate.destroyed) {
TimelineID destroyedTimelineID { destroyedTimelineIdentifier, processIdentifier };
for (auto& [source, existingTimelines] : processTimelines) {
existingTimelines.removeIf([destroyedTimelineID](auto& existingTimeline) {
return existingTimeline->identifier() == destroyedTimelineID;
});
if (existingTimelines.isEmpty())
emptySources.add(source);
}
}
for (auto& emptySource : emptySources)
processTimelines.remove(emptySource);
if (processTimelines.isEmpty())
m_timelines.remove(processIdentifier);
}
RemoteProgressBasedTimeline* RemoteProgressBasedTimelineRegistry::get(const TimelineID& timelineID) const
{
auto it = m_timelines.find(timelineID.processIdentifier());
if (it == m_timelines.end())
return nullptr;
for (auto& sourceTimelines : it->value.values()) {
for (auto& timeline : sourceTimelines) {
if (timeline->identifier() == timelineID)
return timeline.ptr();
}
}
return nullptr;
}
bool RemoteProgressBasedTimelineRegistry::hasTimelineForNode(const WebCore::ScrollingTreeScrollingNode& node) const
{
auto scrollingNodeID = node.scrollingNodeID();
auto it = m_timelines.find(scrollingNodeID.processIdentifier());
return it != m_timelines.end() && it->value.contains(scrollingNodeID);
}
void RemoteProgressBasedTimelineRegistry::updateTimelinesForNode(const WebCore::ScrollingTreeScrollingNode& node)
{
auto processIterator = m_timelines.find(node.scrollingNodeID().processIdentifier());
if (processIterator == m_timelines.end())
return;
auto& processTimelines = processIterator->value;
auto sourceIterator = processTimelines.find(node.scrollingNodeID());
if (sourceIterator != processTimelines.end()) {
for (auto& timeline : sourceIterator->value)
timeline->updateCurrentTime(node);
}
}
HashSet<Ref<RemoteProgressBasedTimeline>> RemoteProgressBasedTimelineRegistry::timelinesForScrollingNodeIDForTesting(WebCore::ScrollingNodeID scrollingNodeID) const
{
auto processIterator = m_timelines.find(scrollingNodeID.processIdentifier());
if (processIterator == m_timelines.end())
return { };
auto& processTimelines = processIterator->value;
auto sourceIterator = processTimelines.find(scrollingNodeID);
if (sourceIterator == processTimelines.end())
return { };
return sourceIterator->value;
}
} // namespace WebKit
#endif // ENABLE(THREADED_ANIMATIONS)
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