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      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 "ExceptionCode.h"
     30 #include "Frame.h"
     31 #include "FrameLoader.h"
     32 #include "FrameLoaderClient.h"
     33 #include "HistoryItem.h"
     34 #include "Page.h"
     35 
     36 namespace WebCore {
     37 
     38 History::History(Frame* frame)
     39     : m_frame(frame)
     40 {
     41 }
     42 
     43 Frame* History::frame() const
     44 {
     45     return m_frame;
     46 }
     47 
     48 void History::disconnectFrame()
     49 {
     50     m_frame = 0;
     51 }
     52 
     53 unsigned History::length() const
     54 {
     55     if (!m_frame)
     56         return 0;
     57     if (!m_frame->page())
     58         return 0;
     59     return m_frame->page()->getHistoryLength();
     60 }
     61 
     62 void History::back()
     63 {
     64     if (!m_frame)
     65         return;
     66     m_frame->redirectScheduler()->scheduleHistoryNavigation(-1);
     67 }
     68 
     69 void History::forward()
     70 {
     71     if (!m_frame)
     72         return;
     73     m_frame->redirectScheduler()->scheduleHistoryNavigation(1);
     74 }
     75 
     76 void History::go(int distance)
     77 {
     78     if (!m_frame)
     79         return;
     80     m_frame->redirectScheduler()->scheduleHistoryNavigation(distance);
     81 }
     82 
     83 KURL History::urlForState(const String& urlString)
     84 {
     85     KURL baseURL = m_frame->loader()->baseURL();
     86     if (urlString.isEmpty())
     87         return baseURL;
     88 
     89     return KURL(baseURL, urlString);
     90 }
     91 
     92 void History::stateObjectAdded(PassRefPtr<SerializedScriptValue> data, const String& title, const String& urlString, StateObjectType stateObjectType, ExceptionCode& ec)
     93 {
     94     if (!m_frame || !m_frame->page())
     95         return;
     96 
     97     KURL fullURL = urlForState(urlString);
     98     RefPtr<SecurityOrigin> origin = SecurityOrigin::create(fullURL);
     99     if (!fullURL.isValid() || !m_frame->document()->securityOrigin()->isSameSchemeHostPort(origin.get())) {
    100         ec = SECURITY_ERR;
    101         return;
    102     }
    103 
    104     if (stateObjectType == StateObjectPush)
    105         m_frame->loader()->history()->pushState(data, title, fullURL.string());
    106     else if (stateObjectType == StateObjectReplace)
    107         m_frame->loader()->history()->replaceState(data, title, fullURL.string());
    108 
    109     if (!urlString.isEmpty())
    110         m_frame->document()->updateURLForPushOrReplaceState(fullURL);
    111 
    112     if (stateObjectType == StateObjectPush)
    113         m_frame->loader()->client()->dispatchDidPushStateWithinPage();
    114     else if (stateObjectType == StateObjectReplace)
    115         m_frame->loader()->client()->dispatchDidReplaceStateWithinPage();
    116 }
    117 
    118 } // namespace WebCore
    119