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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.
*/
#include "config.h"
#if ENABLE(PICTURE_IN_PICTURE_API)
#include "DocumentOrShadowRootPictureInPicture.h"
#include "Document.h"
#include "HTMLVideoElement.h"
#include "TreeScopeInlines.h"
namespace WebCore {
// https://w3c.github.io/picture-in-picture/#documentorshadowroot-extension
Element* DocumentOrShadowRootPictureInPicture::pictureInPictureElement(TreeScope& treeScope)
{
// The pictureInPictureElement attribute’s getter must run these steps:
// 1. If this is a shadow root and its host is not connected, return null and abort these steps.
if (RefPtr shadowHost = treeScope.rootNode().shadowHost(); shadowHost && shadowHost->isConnected())
return nullptr;
// 2. Let candidate be the result of retargeting Picture-in-Picture element against this.
// 3. If candidate and this are in the same tree, return candidate and abort these steps.
Ref document = treeScope.documentScope();
if (RefPtr pictureInPictureElement = document->pictureInPictureElement())
return treeScope.ancestorElementInThisScope(pictureInPictureElement.get());
// 4. Return null.
return nullptr;
}
} // namespace WebCore
#endif
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