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/*
* Copyright (C) 2010, 2012 Google Inc. All rights reserved.
* Copyright (C) 2021 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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.
*/
#pragma once
#include "ContextDestructionObserver.h"
namespace JSC {
class AbstractSlotVisitor;
class SlotVisitor;
}
namespace WebCore {
class ScriptExecutionContext;
// A base class that prevents binding callbacks from executing when
// active dom objects are stopped or suspended.
//
// Should only be created, used, and destroyed on the script execution
// context thread.
class ActiveDOMCallback : public ContextDestructionObserver {
public:
WEBCORE_EXPORT ActiveDOMCallback(ScriptExecutionContext*);
WEBCORE_EXPORT virtual ~ActiveDOMCallback();
WEBCORE_EXPORT bool canInvokeCallback() const;
WEBCORE_EXPORT bool activeDOMObjectsAreSuspended() const;
WEBCORE_EXPORT bool activeDOMObjectAreStopped() const;
virtual void visitJSFunction(JSC::AbstractSlotVisitor&) {}
virtual void visitJSFunction(JSC::SlotVisitor&) {}
};
} // namespace WebCore
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