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 NavigationScheduler_h 32 #define NavigationScheduler_h 33 34 #include "platform/Timer.h" 35 #include "platform/weborigin/Referrer.h" 36 #include "wtf/Forward.h" 37 #include "wtf/HashMap.h" 38 #include "wtf/Noncopyable.h" 39 #include "wtf/OwnPtr.h" 40 #include "wtf/PassOwnPtr.h" 41 #include "wtf/PassRefPtr.h" 42 #include "wtf/text/WTFString.h" 43 44 namespace WebCore { 45 46 class Document; 47 class FormSubmission; 48 class LocalFrame; 49 class ScheduledNavigation; 50 51 class NavigationDisablerForBeforeUnload { 52 WTF_MAKE_NONCOPYABLE(NavigationDisablerForBeforeUnload); 53 54 public: NavigationDisablerForBeforeUnload()55 NavigationDisablerForBeforeUnload() 56 { 57 s_navigationDisableCount++; 58 } ~NavigationDisablerForBeforeUnload()59 ~NavigationDisablerForBeforeUnload() 60 { 61 ASSERT(s_navigationDisableCount); 62 s_navigationDisableCount--; 63 } isNavigationAllowed()64 static bool isNavigationAllowed() { return !s_navigationDisableCount; } 65 66 private: 67 static unsigned s_navigationDisableCount; 68 }; 69 70 class NavigationScheduler { 71 WTF_MAKE_NONCOPYABLE(NavigationScheduler); 72 73 public: 74 explicit NavigationScheduler(LocalFrame*); 75 ~NavigationScheduler(); 76 77 bool locationChangePending(); 78 79 void scheduleRedirect(double delay, const String& url); 80 void scheduleLocationChange(Document*, const String& url, const Referrer& referrer, bool lockBackForwardList = true); 81 void scheduleFormSubmission(PassRefPtrWillBeRawPtr<FormSubmission>); 82 void scheduleRefresh(); 83 void scheduleHistoryNavigation(int steps); 84 85 void startTimer(); 86 87 void cancel(); 88 void clear(); 89 90 private: 91 bool shouldScheduleNavigation() const; 92 bool shouldScheduleNavigation(const String& url) const; 93 94 void timerFired(Timer<NavigationScheduler>*); 95 void schedule(PassOwnPtr<ScheduledNavigation>); 96 97 static bool mustLockBackForwardList(LocalFrame* targetFrame); 98 99 LocalFrame* m_frame; 100 Timer<NavigationScheduler> m_timer; 101 OwnPtr<ScheduledNavigation> m_redirect; 102 }; 103 104 } // namespace WebCore 105 106 #endif // NavigationScheduler_h 107