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      1 /*
      2  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
      3  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
      4  * Copyright (C) 2009 Adam Barth. All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  *
     10  * 1.  Redistributions of source code must retain the above copyright
     11  *     notice, this list of conditions and the following disclaimer.
     12  * 2.  Redistributions in binary form must reproduce the above copyright
     13  *     notice, this list of conditions and the following disclaimer in the
     14  *     documentation and/or other materials provided with the distribution.
     15  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     16  *     its contributors may be used to endorse or promote products derived
     17  *     from this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     20  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     22  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     23  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     26  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef RedirectScheduler_h
     32 #define RedirectScheduler_h
     33 
     34 #include "Event.h"
     35 #include "Timer.h"
     36 #include <wtf/OwnPtr.h>
     37 #include <wtf/PassOwnPtr.h>
     38 #include <wtf/PassRefPtr.h>
     39 
     40 namespace WebCore {
     41 
     42 class FormState;
     43 class Frame;
     44 class String;
     45 
     46 struct FrameLoadRequest;
     47 struct ScheduledRedirection;
     48 
     49 class RedirectScheduler : public Noncopyable {
     50 public:
     51     RedirectScheduler(Frame*);
     52     ~RedirectScheduler();
     53 
     54     bool redirectScheduledDuringLoad();
     55     bool locationChangePending();
     56 
     57     void scheduleRedirect(double delay, const String& url);
     58     void scheduleLocationChange(const String& url, const String& referrer, bool lockHistory = true, bool lockBackForwardList = true, bool userGesture = false);
     59     void scheduleFormSubmission(const FrameLoadRequest&, bool lockHistory, PassRefPtr<Event>, PassRefPtr<FormState>);
     60     void scheduleRefresh(bool userGesture = false);
     61     void scheduleHistoryNavigation(int steps);
     62 
     63     void startTimer();
     64 
     65     void cancel(bool newLoadInProgress = false);
     66     void clear();
     67 
     68 private:
     69     void timerFired(Timer<RedirectScheduler>*);
     70     void schedule(PassOwnPtr<ScheduledRedirection>);
     71 
     72     static bool mustLockBackForwardList(Frame* targetFrame);
     73 
     74     Frame* m_frame;
     75     Timer<RedirectScheduler> m_timer;
     76     OwnPtr<ScheduledRedirection> m_scheduledRedirection;
     77 };
     78 
     79 } // namespace WebCore
     80 
     81 #endif // FrameLoader_h
     82