Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 104 insertions, 0 deletions

diff --git a/Source/WebCore/loader/NavigationScheduler.h b/Source/WebCore/loader/NavigationScheduler.h
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+++ b/Source/WebCore/loader/NavigationScheduler.h
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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 "Timer.h"
+#include <wtf/Forward.h>
+#include <wtf/Noncopyable.h>
+#include <wtf/OwnPtr.h>
+#include <wtf/PassOwnPtr.h>
+#include <wtf/PassRefPtr.h>
+
+namespace WebCore {
+
+class FormSubmission;
+class Frame;
+class ScheduledNavigation;
+class SecurityOrigin;
+
+class NavigationDisablerForBeforeUnload {
+    WTF_MAKE_NONCOPYABLE(NavigationDisablerForBeforeUnload);
+
+public:
+    NavigationDisablerForBeforeUnload()
+    {
+        s_navigationDisableCount++;
+    }
+    ~NavigationDisablerForBeforeUnload()
+    {
+        ASSERT(s_navigationDisableCount);
+        s_navigationDisableCount--;
+    }
+    static bool isNavigationAllowed() { return !s_navigationDisableCount; }
+
+private:
+    static unsigned s_navigationDisableCount;
+};
+
+class NavigationScheduler {
+    WTF_MAKE_NONCOPYABLE(NavigationScheduler);
+
+public:
+    NavigationScheduler(Frame*);
+    ~NavigationScheduler();
+
+    bool redirectScheduledDuringLoad();
+    bool locationChangePending();
+
+    void scheduleRedirect(double delay, const String& url);
+    void scheduleLocationChange(SecurityOrigin*, const String& url, const String& referrer, bool lockHistory = true, bool lockBackForwardList = true);
+    void scheduleFormSubmission(PassRefPtr<FormSubmission>);
+    void scheduleRefresh();
+    void scheduleHistoryNavigation(int steps);
+
+    void startTimer();
+
+    void cancel(bool newLoadInProgress = false);
+    void clear();
+
+private:
+    bool shouldScheduleNavigation() const;
+    bool shouldScheduleNavigation(const String& url) const;
+
+    void timerFired(Timer<NavigationScheduler>*);
+    void schedule(PassOwnPtr<ScheduledNavigation>);
+
+    static bool mustLockBackForwardList(Frame* targetFrame);
+
+    Frame* m_frame;
+    Timer<NavigationScheduler> m_timer;
+    OwnPtr<ScheduledNavigation> m_redirect;
+};
+
+} // namespace WebCore
+
+#endif // NavigationScheduler_h