1 files changed, 81 insertions, 0 deletions
diff --git a/Source/WebKit2/Shared/SessionState.cpp b/Source/WebKit2/Shared/SessionState.cpp
new file mode 100644
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--- /dev/null
+++ b/Source/WebKit2/Shared/SessionState.cpp
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2011 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 INC. 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 INC. 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.
+ */
+
+#include "SessionState.h"
+
+namespace CoreIPC {
+
+// This assumes that when we encode a RefPtr we want to encode the object it points to and it is never null.
+template<typename T> struct ArgumentCoder<RefPtr<T> > {
+    static void encode(ArgumentEncoder* encoder, const RefPtr<T>& item)
+    {
+        item->encode(*encoder);
+    }
+
+    static bool decode(ArgumentDecoder* decoder, RefPtr<T>& item)
+    {
+        item = T::decode(*decoder);
+        return item;
+    }
+};
+
+} // namespace CoreIPC
+
+namespace WebKit {
+
+SessionState::SessionState()
+    : m_currentIndex(0)
+{
+}
+
+SessionState::SessionState(const BackForwardListItemVector& list, uint32_t currentIndex)
+    : m_list(list)
+    , m_currentIndex(currentIndex)
+{
+}
+
+bool SessionState::isEmpty() const
+{
+    // Because this might change later, callers should use this instead of
+    // calling list().isEmpty() directly themselves.
+    return m_list.isEmpty();
+}
+    
+void SessionState::encode(CoreIPC::ArgumentEncoder* encoder) const
+{
+    encoder->encode(m_list);
+    encoder->encode(m_currentIndex);
+}
+
+bool SessionState::decode(CoreIPC::ArgumentDecoder* decoder, SessionState& state)
+{
+    if (!decoder->decode(state.m_list))
+        return false;
+    if (!decoder->decode(state.m_currentIndex))
+        return false;
+    return true;
+}
+    
+} // namespace WebKit