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      1 /*
      2  * Copyright (C) 2010 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 "BackForwardController.h"
     28 
     29 #include "BackForwardListImpl.h"
     30 #include "HistoryItem.h"
     31 #include "Page.h"
     32 
     33 namespace WebCore {
     34 
     35 BackForwardController::BackForwardController(Page* page, PassRefPtr<BackForwardList> client)
     36     : m_page(page)
     37     , m_client(client)
     38 {
     39     if (!m_client)
     40         m_client = BackForwardListImpl::create(page);
     41 }
     42 
     43 BackForwardController::~BackForwardController()
     44 {
     45 }
     46 
     47 bool BackForwardController::canGoBackOrForward(int distance) const
     48 {
     49     return m_page->canGoBackOrForward(distance);
     50 }
     51 
     52 void BackForwardController::goBackOrForward(int distance)
     53 {
     54     m_page->goBackOrForward(distance);
     55 }
     56 
     57 bool BackForwardController::goBack()
     58 {
     59     return m_page->goBack();
     60 }
     61 
     62 bool BackForwardController::goForward()
     63 {
     64     return m_page->goForward();
     65 }
     66 
     67 void BackForwardController::addItem(PassRefPtr<HistoryItem> item)
     68 {
     69     m_client->addItem(item);
     70 }
     71 
     72 void BackForwardController::setCurrentItem(HistoryItem* item)
     73 {
     74     m_client->goToItem(item);
     75 }
     76 
     77 int BackForwardController::count() const
     78 {
     79     return m_page->getHistoryLength();
     80 }
     81 
     82 int BackForwardController::backCount() const
     83 {
     84     return m_client->backListCount();
     85 }
     86 
     87 int BackForwardController::forwardCount() const
     88 {
     89     return m_client->forwardListCount();
     90 }
     91 
     92 HistoryItem* BackForwardController::itemAtIndex(int i)
     93 {
     94     return m_client->itemAtIndex(i);
     95 }
     96 
     97 bool BackForwardController::isActive()
     98 {
     99     return m_client->isActive();
    100 }
    101 
    102 void BackForwardController::close()
    103 {
    104     m_client->close();
    105 }
    106 
    107 } // namespace WebCore
    108