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      1 /*
      2  * Copyright (C) 2008, 2009 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. ``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 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 "DOMApplicationCache.h"
     28 
     29 #if ENABLE(OFFLINE_WEB_APPLICATIONS)
     30 
     31 #include "ApplicationCacheHost.h"
     32 #include "DocumentLoader.h"
     33 #include "Event.h"
     34 #include "EventException.h"
     35 #include "EventListener.h"
     36 #include "EventNames.h"
     37 #include "Frame.h"
     38 #include "FrameLoader.h"
     39 
     40 namespace WebCore {
     41 
     42 DOMApplicationCache::DOMApplicationCache(Frame* frame)
     43     : m_frame(frame)
     44 {
     45     ApplicationCacheHost* cacheHost = applicationCacheHost();
     46     if (cacheHost)
     47         cacheHost->setDOMApplicationCache(this);
     48 }
     49 
     50 void DOMApplicationCache::disconnectFrame()
     51 {
     52     ApplicationCacheHost* cacheHost = applicationCacheHost();
     53     if (cacheHost)
     54         cacheHost->setDOMApplicationCache(0);
     55     m_frame = 0;
     56 }
     57 
     58 ApplicationCacheHost* DOMApplicationCache::applicationCacheHost() const
     59 {
     60     if (!m_frame || !m_frame->loader()->documentLoader())
     61         return 0;
     62     return m_frame->loader()->documentLoader()->applicationCacheHost();
     63 }
     64 
     65 unsigned short DOMApplicationCache::status() const
     66 {
     67     ApplicationCacheHost* cacheHost = applicationCacheHost();
     68     if (!cacheHost)
     69         return ApplicationCacheHost::UNCACHED;
     70     return cacheHost->status();
     71 }
     72 
     73 void DOMApplicationCache::update(ExceptionCode& ec)
     74 {
     75     ApplicationCacheHost* cacheHost = applicationCacheHost();
     76     if (!cacheHost || !cacheHost->update())
     77         ec = INVALID_STATE_ERR;
     78 }
     79 
     80 void DOMApplicationCache::swapCache(ExceptionCode& ec)
     81 {
     82     ApplicationCacheHost* cacheHost = applicationCacheHost();
     83     if (!cacheHost || !cacheHost->swapCache())
     84         ec = INVALID_STATE_ERR;
     85 }
     86 
     87 ScriptExecutionContext* DOMApplicationCache::scriptExecutionContext() const
     88 {
     89     if (m_frame)
     90         return m_frame->document();
     91     return 0;
     92 }
     93 
     94 const AtomicString& DOMApplicationCache::toEventType(ApplicationCacheHost::EventID id)
     95 {
     96     switch (id) {
     97     case ApplicationCacheHost::CHECKING_EVENT:
     98         return eventNames().checkingEvent;
     99     case ApplicationCacheHost::ERROR_EVENT:
    100         return eventNames().errorEvent;
    101     case ApplicationCacheHost::NOUPDATE_EVENT:
    102         return eventNames().noupdateEvent;
    103     case ApplicationCacheHost::DOWNLOADING_EVENT:
    104         return eventNames().downloadingEvent;
    105     case ApplicationCacheHost::PROGRESS_EVENT:
    106         return eventNames().progressEvent;
    107     case ApplicationCacheHost::UPDATEREADY_EVENT:
    108         return eventNames().updatereadyEvent;
    109     case ApplicationCacheHost::CACHED_EVENT:
    110         return eventNames().cachedEvent;
    111     case ApplicationCacheHost::OBSOLETE_EVENT:
    112         return eventNames().obsoleteEvent;
    113     }
    114     ASSERT_NOT_REACHED();
    115     return eventNames().errorEvent;
    116 }
    117 
    118 EventTargetData* DOMApplicationCache::eventTargetData()
    119 {
    120     return &m_eventTargetData;
    121 }
    122 
    123 EventTargetData* DOMApplicationCache::ensureEventTargetData()
    124 {
    125     return &m_eventTargetData;
    126 }
    127 
    128 } // namespace WebCore
    129 
    130 #endif // ENABLE(OFFLINE_WEB_APPLICATIONS)
    131