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90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
/*
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* Copyright (C) 2010 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef UserGestureIndicator_h
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#define UserGestureIndicator_h
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#include "platform/PlatformExport.h"
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#include "wtf/Noncopyable.h"
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#include "wtf/RefCounted.h"
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#include "wtf/RefPtr.h"
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namespace blink {
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class UserGestureIndicator;
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enum ProcessingUserGestureState {
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DefinitelyProcessingNewUserGesture,
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DefinitelyProcessingUserGesture,
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PossiblyProcessingUserGesture,
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DefinitelyNotProcessingUserGesture
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};
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class PLATFORM_EXPORT UserGestureToken : public RefCounted<UserGestureToken> {
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public:
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virtual ~UserGestureToken() { }
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virtual bool hasGestures() const = 0;
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virtual void setOutOfProcess() = 0;
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virtual void setJavascriptPrompt() = 0;
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};
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class PLATFORM_EXPORT UserGestureIndicatorDisabler {
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WTF_MAKE_NONCOPYABLE(UserGestureIndicatorDisabler);
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public:
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UserGestureIndicatorDisabler();
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~UserGestureIndicatorDisabler();
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private:
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ProcessingUserGestureState m_savedState;
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UserGestureIndicator* m_savedIndicator;
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};
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class PLATFORM_EXPORT UserGestureIndicator {
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WTF_MAKE_NONCOPYABLE(UserGestureIndicator);
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friend class UserGestureIndicatorDisabler;
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public:
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static bool processingUserGesture();
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static bool consumeUserGesture();
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static UserGestureToken* currentToken();
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static void clearProcessedUserGestureSinceLoad();
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static bool processedUserGestureSinceLoad();
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explicit UserGestureIndicator(ProcessingUserGestureState);
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explicit UserGestureIndicator(PassRefPtr<UserGestureToken>);
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~UserGestureIndicator();
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private:
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static ProcessingUserGestureState s_state;
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static UserGestureIndicator* s_topmostIndicator;
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static bool s_processedUserGestureSinceLoad;
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ProcessingUserGestureState m_previousState;
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RefPtr<UserGestureToken> m_token;
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};
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}
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#endif
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