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/*
* Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
* (http://www.torchmobile.com/)
* Copyright (C) 2009 Adam Barth. 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE 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 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 NavigationScheduler_h
#define NavigationScheduler_h
#include "core/CoreExport.h"
#include "platform/WebTaskRunner.h"
#include "platform/heap/Handle.h"
#include "public/platform/WebScheduler.h"
#include "wtf/Forward.h"
#include "wtf/HashMap.h"
#include "wtf/Noncopyable.h"
#include "wtf/PassRefPtr.h"
#include "wtf/text/WTFString.h"
#include <memory>
namespace blink {
class Document;
class FormSubmission;
class LocalFrame;
class ScheduledNavigation;
class CORE_EXPORT NavigationScheduler final
: public GarbageCollectedFinalized<NavigationScheduler> {
WTF_MAKE_NONCOPYABLE(NavigationScheduler);
public:
static NavigationScheduler* create(LocalFrame* frame) {
return new NavigationScheduler(frame);
}
~NavigationScheduler();
bool locationChangePending();
bool isNavigationScheduledWithin(double intervalInSeconds) const;
void scheduleRedirect(double delay, const String& url);
void scheduleLocationChange(Document*,
const String& url,
bool replacesCurrentItem = true);
void schedulePageBlock(Document*, int reason);
void scheduleFormSubmission(Document*, FormSubmission*);
void scheduleReload();
void startTimer();
void cancel();
DECLARE_TRACE();
private:
explicit NavigationScheduler(LocalFrame*);
bool shouldScheduleReload() const;
bool shouldScheduleNavigation(const String& url) const;
void navigateTask();
void schedule(ScheduledNavigation*);
static bool mustReplaceCurrentItem(LocalFrame* targetFrame);
Member<LocalFrame> m_frame;
TaskHandle m_navigateTaskHandle;
Member<ScheduledNavigation> m_redirect;
// Exists because we can't deref m_frame in destructor.
WebScheduler::NavigatingFrameType m_frameType;
};
class NavigationDisablerForBeforeUnload {
WTF_MAKE_NONCOPYABLE(NavigationDisablerForBeforeUnload);
STACK_ALLOCATED();
public:
NavigationDisablerForBeforeUnload() { s_navigationDisableCount++; }
~NavigationDisablerForBeforeUnload() {
DCHECK(s_navigationDisableCount);
s_navigationDisableCount--;
}
static bool isNavigationAllowed() { return !s_navigationDisableCount; }
private:
static unsigned s_navigationDisableCount;
};
} // namespace blink
#endif // NavigationScheduler_h
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