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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 "core/loader/appcache/ApplicationCache.h"
     28 
     29 #include "bindings/v8/ExceptionState.h"
     30 #include "core/dom/Document.h"
     31 #include "core/dom/ExceptionCode.h"
     32 #include "core/events/EventListener.h"
     33 #include "core/loader/DocumentLoader.h"
     34 #include "core/loader/FrameLoader.h"
     35 #include "core/frame/Frame.h"
     36 
     37 namespace WebCore {
     38 
     39 ApplicationCache::ApplicationCache(Frame* frame)
     40     : DOMWindowProperty(frame)
     41 {
     42     ScriptWrappable::init(this);
     43     ApplicationCacheHost* cacheHost = applicationCacheHost();
     44     if (cacheHost)
     45         cacheHost->setApplicationCache(this);
     46 }
     47 
     48 void ApplicationCache::willDestroyGlobalObjectInFrame()
     49 {
     50     if (ApplicationCacheHost* cacheHost = applicationCacheHost())
     51         cacheHost->setApplicationCache(0);
     52     DOMWindowProperty::willDestroyGlobalObjectInFrame();
     53 }
     54 
     55 ApplicationCacheHost* ApplicationCache::applicationCacheHost() const
     56 {
     57     if (!m_frame || !m_frame->loader().documentLoader())
     58         return 0;
     59     return m_frame->loader().documentLoader()->applicationCacheHost();
     60 }
     61 
     62 unsigned short ApplicationCache::status() const
     63 {
     64     ApplicationCacheHost* cacheHost = applicationCacheHost();
     65     if (!cacheHost)
     66         return ApplicationCacheHost::UNCACHED;
     67     return cacheHost->status();
     68 }
     69 
     70 void ApplicationCache::update(ExceptionState& exceptionState)
     71 {
     72     ApplicationCacheHost* cacheHost = applicationCacheHost();
     73     if (!cacheHost || !cacheHost->update())
     74         exceptionState.throwDOMException(InvalidStateError, "there is no application cache to update.");
     75 }
     76 
     77 void ApplicationCache::swapCache(ExceptionState& exceptionState)
     78 {
     79     ApplicationCacheHost* cacheHost = applicationCacheHost();
     80     if (!cacheHost || !cacheHost->swapCache())
     81         exceptionState.throwDOMException(InvalidStateError, "there is no newer application cache to swap to.");
     82 }
     83 
     84 void ApplicationCache::abort()
     85 {
     86     ApplicationCacheHost* cacheHost = applicationCacheHost();
     87     if (cacheHost)
     88         cacheHost->abort();
     89 }
     90 
     91 const AtomicString& ApplicationCache::interfaceName() const
     92 {
     93     return EventTargetNames::ApplicationCache;
     94 }
     95 
     96 ExecutionContext* ApplicationCache::executionContext() const
     97 {
     98     if (m_frame)
     99         return m_frame->document();
    100     return 0;
    101 }
    102 
    103 const AtomicString& ApplicationCache::toEventType(ApplicationCacheHost::EventID id)
    104 {
    105     switch (id) {
    106     case ApplicationCacheHost::CHECKING_EVENT:
    107         return EventTypeNames::checking;
    108     case ApplicationCacheHost::ERROR_EVENT:
    109         return EventTypeNames::error;
    110     case ApplicationCacheHost::NOUPDATE_EVENT:
    111         return EventTypeNames::noupdate;
    112     case ApplicationCacheHost::DOWNLOADING_EVENT:
    113         return EventTypeNames::downloading;
    114     case ApplicationCacheHost::PROGRESS_EVENT:
    115         return EventTypeNames::progress;
    116     case ApplicationCacheHost::UPDATEREADY_EVENT:
    117         return EventTypeNames::updateready;
    118     case ApplicationCacheHost::CACHED_EVENT:
    119         return EventTypeNames::cached;
    120     case ApplicationCacheHost::OBSOLETE_EVENT:
    121         return EventTypeNames::obsolete;
    122     }
    123     ASSERT_NOT_REACHED();
    124     return EventTypeNames::error;
    125 }
    126 
    127 } // namespace WebCore
    128