1 /* 2 * Copyright (C) 2011 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "config.h" 27 #include "SessionState.h" 28 29 namespace CoreIPC { 30 31 // This assumes that when we encode a RefPtr we want to encode the object it points to and it is never null. 32 template<typename T> struct ArgumentCoder<RefPtr<T> > { 33 static void encode(ArgumentEncoder* encoder, const RefPtr<T>& item) 34 { 35 item->encode(*encoder); 36 } 37 38 static bool decode(ArgumentDecoder* decoder, RefPtr<T>& item) 39 { 40 item = T::decode(*decoder); 41 return item; 42 } 43 }; 44 45 } // namespace CoreIPC 46 47 namespace WebKit { 48 49 SessionState::SessionState() 50 : m_currentIndex(0) 51 { 52 } 53 54 SessionState::SessionState(const BackForwardListItemVector& list, uint32_t currentIndex) 55 : m_list(list) 56 , m_currentIndex(currentIndex) 57 { 58 } 59 60 bool SessionState::isEmpty() const 61 { 62 // Because this might change later, callers should use this instead of 63 // calling list().isEmpty() directly themselves. 64 return m_list.isEmpty(); 65 } 66 67 void SessionState::encode(CoreIPC::ArgumentEncoder* encoder) const 68 { 69 encoder->encode(m_list); 70 encoder->encode(m_currentIndex); 71 } 72 73 bool SessionState::decode(CoreIPC::ArgumentDecoder* decoder, SessionState& state) 74 { 75 if (!decoder->decode(state.m_list)) 76 return false; 77 if (!decoder->decode(state.m_currentIndex)) 78 return false; 79 return true; 80 } 81 82 } // namespace WebKit 83