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/*
* Copyright (C) 2020 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 "RemoteScrollingUIState.h"
#import "ArgumentCoders.h"
#import <wtf/text/TextStream.h>
namespace WebKit {
void RemoteScrollingUIState::encode(IPC::Encoder& encoder) const
{
encoder << m_changes;
if (m_changes.contains(Changes::ScrollSnapNodes))
encoder << m_nodesWithActiveScrollSnap;
if (m_changes.contains(Changes::UserScrollNodes))
encoder << m_nodesWithActiveUserScrolls;
}
std::optional<RemoteScrollingUIState> RemoteScrollingUIState::decode(IPC::Decoder& decoder)
{
RemoteScrollingUIState uiState;
if (!decoder.decode(uiState.m_changes))
return std::nullopt;
if (uiState.m_changes.contains(Changes::ScrollSnapNodes)) {
if (!decoder.decode(uiState.m_nodesWithActiveScrollSnap))
return std::nullopt;
}
if (uiState.m_changes.contains(Changes::UserScrollNodes)) {
if (!decoder.decode(uiState.m_nodesWithActiveUserScrolls))
return std::nullopt;
}
return uiState;
}
void RemoteScrollingUIState::reset()
{
clearChanges();
m_nodesWithActiveScrollSnap.clear();
m_nodesWithActiveUserScrolls.clear();
}
void RemoteScrollingUIState::addNodeWithActiveScrollSnap(WebCore::ScrollingNodeID nodeID)
{
auto addResult = m_nodesWithActiveScrollSnap.add(nodeID);
if (addResult.isNewEntry)
m_changes.add(Changes::ScrollSnapNodes);
}
void RemoteScrollingUIState::removeNodeWithActiveScrollSnap(WebCore::ScrollingNodeID nodeID)
{
if (m_nodesWithActiveScrollSnap.remove(nodeID))
m_changes.add(Changes::ScrollSnapNodes);
}
void RemoteScrollingUIState::addNodeWithActiveUserScroll(WebCore::ScrollingNodeID nodeID)
{
auto addResult = m_nodesWithActiveUserScrolls.add(nodeID);
if (addResult.isNewEntry)
m_changes.add(Changes::UserScrollNodes);
}
void RemoteScrollingUIState::removeNodeWithActiveUserScroll(WebCore::ScrollingNodeID nodeID)
{
if (m_nodesWithActiveUserScrolls.remove(nodeID))
m_changes.add(Changes::UserScrollNodes);
}
} // namespace WebKit
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