--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/page/History.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2007 Apple Inc.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 COMPUTER, INC. OR
+ * 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.
+ */
+
+#include "config.h"
+#include "History.h"
+
+#include "ExceptionCode.h"
+#include "Frame.h"
+#include "FrameLoader.h"
+#include "FrameLoaderClient.h"
+#include "HistoryItem.h"
+#include "Page.h"
+
+namespace WebCore {
+
+History::History(Frame* frame)
+    : m_frame(frame)
+{
+}
+
+Frame* History::frame() const
+{
+    return m_frame;
+}
+
+void History::disconnectFrame()
+{
+    m_frame = 0;
+}
+
+unsigned History::length() const
+{
+    if (!m_frame)
+        return 0;
+    if (!m_frame->page())
+        return 0;
+    return m_frame->page()->getHistoryLength();
+}
+
+void History::back()
+{
+    if (!m_frame)
+        return;
+    m_frame->redirectScheduler()->scheduleHistoryNavigation(-1);
+}
+
+void History::forward()
+{
+    if (!m_frame)
+        return;
+    m_frame->redirectScheduler()->scheduleHistoryNavigation(1);
+}
+
+void History::go(int distance)
+{
+    if (!m_frame)
+        return;
+    m_frame->redirectScheduler()->scheduleHistoryNavigation(distance);
+}
+
+KURL History::urlForState(const String& urlString)
+{
+    KURL baseURL = m_frame->loader()->baseURL();
+    if (urlString.isEmpty())
+        return baseURL;
+        
+    KURL absoluteURL(baseURL, urlString);
+    if (!absoluteURL.isValid())
+        return KURL();
+    
+    if (absoluteURL.string().left(absoluteURL.pathStart()) != baseURL.string().left(baseURL.pathStart()))
+        return KURL();
+    
+    return absoluteURL;
+}
+
+void History::stateObjectAdded(PassRefPtr<SerializedScriptValue> data, const String& title, const String& urlString, StateObjectType stateObjectType, ExceptionCode& ec)
+{
+    if (!m_frame || !m_frame->page())
+        return;
+    
+    KURL fullURL = urlForState(urlString);
+    if (!fullURL.isValid()) {
+        ec = SECURITY_ERR;
+        return;
+    }
+
+    if (stateObjectType == StateObjectPush)
+        m_frame->loader()->history()->pushState(data, title, fullURL.string());
+    else if (stateObjectType == StateObjectReplace)
+        m_frame->loader()->history()->replaceState(data, title, fullURL.string());
+            
+    if (!urlString.isEmpty())
+        m_frame->document()->updateURLForPushOrReplaceState(fullURL);
+
+    if (stateObjectType == StateObjectPush)
+        m_frame->loader()->client()->dispatchDidPushStateWithinPage();
+    else if (stateObjectType == StateObjectReplace)
+        m_frame->loader()->client()->dispatchDidReplaceStateWithinPage();
+}
+
+} // namespace WebCore