1 /* 2 * Copyright (C) 2007 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 COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "config.h" 27 #include "History.h" 28 29 #include "BackForwardController.h" 30 #include "Document.h" 31 #include "ExceptionCode.h" 32 #include "Frame.h" 33 #include "FrameLoader.h" 34 #include "FrameLoaderClient.h" 35 #include "HistoryItem.h" 36 #include "Page.h" 37 38 namespace WebCore { 39 40 History::History(Frame* frame) 41 : m_frame(frame) 42 { 43 } 44 45 Frame* History::frame() const 46 { 47 return m_frame; 48 } 49 50 void History::disconnectFrame() 51 { 52 m_frame = 0; 53 } 54 55 unsigned History::length() const 56 { 57 if (!m_frame) 58 return 0; 59 if (!m_frame->page()) 60 return 0; 61 return m_frame->page()->backForward()->count(); 62 } 63 64 void History::back() 65 { 66 go(-1); 67 } 68 69 void History::back(ScriptExecutionContext* context) 70 { 71 go(context, -1); 72 } 73 74 void History::forward() 75 { 76 go(1); 77 } 78 79 void History::forward(ScriptExecutionContext* context) 80 { 81 go(context, 1); 82 } 83 84 void History::go(int distance) 85 { 86 if (!m_frame) 87 return; 88 89 m_frame->navigationScheduler()->scheduleHistoryNavigation(distance); 90 } 91 92 void History::go(ScriptExecutionContext* context, int distance) 93 { 94 if (!m_frame) 95 return; 96 97 ASSERT(WTF::isMainThread()); 98 Frame* activeFrame = static_cast<Document*>(context)->frame(); 99 if (!activeFrame) 100 return; 101 102 if (!activeFrame->loader()->shouldAllowNavigation(m_frame)) 103 return; 104 105 m_frame->navigationScheduler()->scheduleHistoryNavigation(distance); 106 } 107 108 KURL History::urlForState(const String& urlString) 109 { 110 KURL baseURL = m_frame->loader()->baseURL(); 111 if (urlString.isEmpty()) 112 return baseURL; 113 114 return KURL(baseURL, urlString); 115 } 116 117 void History::stateObjectAdded(PassRefPtr<SerializedScriptValue> data, const String& title, const String& urlString, StateObjectType stateObjectType, ExceptionCode& ec) 118 { 119 if (!m_frame || !m_frame->page()) 120 return; 121 122 KURL fullURL = urlForState(urlString); 123 if (!fullURL.isValid() || !m_frame->document()->securityOrigin()->canRequest(fullURL)) { 124 ec = SECURITY_ERR; 125 return; 126 } 127 128 if (stateObjectType == StateObjectPush) 129 m_frame->loader()->history()->pushState(data, title, fullURL.string()); 130 else if (stateObjectType == StateObjectReplace) 131 m_frame->loader()->history()->replaceState(data, title, fullURL.string()); 132 133 if (!urlString.isEmpty()) 134 m_frame->document()->updateURLForPushOrReplaceState(fullURL); 135 136 if (stateObjectType == StateObjectPush) 137 m_frame->loader()->client()->dispatchDidPushStateWithinPage(); 138 else if (stateObjectType == StateObjectReplace) 139 m_frame->loader()->client()->dispatchDidReplaceStateWithinPage(); 140 } 141 142 } // namespace WebCore 143