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.
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31 #ifndef NavigationScheduler_h
32 #define NavigationScheduler_h
35 #include <wtf/Forward.h>
36 #include <wtf/Noncopyable.h>
37 #include <wtf/OwnPtr.h>
38 #include <wtf/PassOwnPtr.h>
39 #include <wtf/PassRefPtr.h>
45 class ScheduledNavigation;
48 class NavigationDisablerForBeforeUnload {
49 WTF_MAKE_NONCOPYABLE(NavigationDisablerForBeforeUnload);
52 NavigationDisablerForBeforeUnload()
54 s_navigationDisableCount++;
56 ~NavigationDisablerForBeforeUnload()
58 ASSERT(s_navigationDisableCount);
59 s_navigationDisableCount--;
61 static bool isNavigationAllowed() { return !s_navigationDisableCount; }
64 static unsigned s_navigationDisableCount;
67 class NavigationScheduler {
68 WTF_MAKE_NONCOPYABLE(NavigationScheduler);
71 NavigationScheduler(Frame*);
72 ~NavigationScheduler();
74 bool redirectScheduledDuringLoad();
75 bool locationChangePending();
77 void scheduleRedirect(double delay, const String& url);
78 void scheduleLocationChange(SecurityOrigin*, const String& url, const String& referrer, bool lockHistory = true, bool lockBackForwardList = true);
79 void scheduleFormSubmission(PassRefPtr<FormSubmission>);
80 void scheduleRefresh();
81 void scheduleHistoryNavigation(int steps);
85 void cancel(bool newLoadInProgress = false);
89 bool shouldScheduleNavigation() const;
90 bool shouldScheduleNavigation(const String& url) const;
92 void timerFired(Timer<NavigationScheduler>*);
93 void schedule(PassOwnPtr<ScheduledNavigation>);
95 static bool mustLockBackForwardList(Frame* targetFrame);
98 Timer<NavigationScheduler> m_timer;
99 OwnPtr<ScheduledNavigation> m_redirect;
102 } // namespace WebCore
104 #endif // NavigationScheduler_h