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/*
* Copyright (C) 2010 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.
*/
#ifndef UserGestureIndicator_h
#define UserGestureIndicator_h
#include "platform/PlatformExport.h"
#include "wtf/Noncopyable.h"
#include "wtf/RefCounted.h"
#include "wtf/RefPtr.h"
namespace blink {
class UserGestureIndicator;
enum ProcessingUserGestureState {
DefinitelyProcessingNewUserGesture,
DefinitelyProcessingUserGesture,
PossiblyProcessingUserGesture,
DefinitelyNotProcessingUserGesture
};
class PLATFORM_EXPORT UserGestureToken : public RefCounted<UserGestureToken> {
public:
virtual ~UserGestureToken() { }
virtual bool hasGestures() const = 0;
virtual void setOutOfProcess() = 0;
virtual void setJavascriptPrompt() = 0;
};
class PLATFORM_EXPORT UserGestureIndicatorDisabler {
WTF_MAKE_NONCOPYABLE(UserGestureIndicatorDisabler);
public:
UserGestureIndicatorDisabler();
~UserGestureIndicatorDisabler();
private:
ProcessingUserGestureState m_savedState;
UserGestureIndicator* m_savedIndicator;
};
class PLATFORM_EXPORT UserGestureIndicator {
WTF_MAKE_NONCOPYABLE(UserGestureIndicator);
friend class UserGestureIndicatorDisabler;
public:
static bool processingUserGesture();
static bool consumeUserGesture();
static UserGestureToken* currentToken();
static void clearProcessedUserGestureSinceLoad();
static bool processedUserGestureSinceLoad();
explicit UserGestureIndicator(ProcessingUserGestureState);
explicit UserGestureIndicator(PassRefPtr<UserGestureToken>);
~UserGestureIndicator();
private:
static ProcessingUserGestureState s_state;
static UserGestureIndicator* s_topmostIndicator;
static bool s_processedUserGestureSinceLoad;
ProcessingUserGestureState m_previousState;
RefPtr<UserGestureToken> m_token;
};
}
#endif
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