blob: 02cc7d120ca4bcff3525c8f749cc4180fe6d45e2 [file] [log] [blame]
/*
* Copyright (C) 2017 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.
*/
#pragma once
#include "Frame.h"
namespace WebCore {
class NavigationDisabler {
public:
NavigationDisabler(Frame* frame)
: m_frame(frame)
{
if (frame)
++frame->mainFrame().m_navigationDisableCount;
else // Disable all navigations when destructing a frame-less document.
++s_globalNavigationDisableCount;
}
~NavigationDisabler()
{
if (m_frame) {
auto& mainFrame = m_frame->mainFrame();
ASSERT(mainFrame.m_navigationDisableCount);
--mainFrame.m_navigationDisableCount;
} else {
ASSERT(s_globalNavigationDisableCount);
--s_globalNavigationDisableCount;
}
}
static bool isNavigationAllowed(Frame& frame)
{
return !frame.mainFrame().m_navigationDisableCount && !s_globalNavigationDisableCount;
}
private:
RefPtr<Frame> m_frame;
static unsigned s_globalNavigationDisableCount;
};
}