1 /*

     2     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)

     3     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)

     4     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)

     5     Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)

     6     Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.

     7 

     8     This library is free software; you can redistribute it and/or

     9     modify it under the terms of the GNU Library General Public

    10     License as published by the Free Software Foundation; either

    11     version 2 of the License, or (at your option) any later version.

    12 

    13     This library is distributed in the hope that it will be useful,

    14     but WITHOUT ANY WARRANTY; without even the implied warranty of

    15     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    16     Library General Public License for more details.

    17 

    18     You should have received a copy of the GNU Library General Public License

    19     along with this library; see the file COPYING.LIB.  If not, write to

    20     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

    21     Boston, MA 02110-1301, USA.

    22 

    23     This class provides all functionality needed for loading images, style sheets and html

    24     pages from the web. It has a memory cache for these objects.

    25 */

    26 

    27 #include "config.h"

    28 #include "CachedScript.h"

    29 

    30 #include "CachedResourceClient.h"

    31 #include "CachedResourceClientWalker.h"

    32 #include "SharedBuffer.h"

    33 #include "TextResourceDecoder.h"

    34 #include <wtf/Vector.h>

    35 

    36 namespace WebCore {

    37 

    38 CachedScript::CachedScript(const String& url, const String& charset)

    39     : CachedResource(url, Script)

    40     , m_decoder(TextResourceDecoder::create("application/javascript", charset))

    41     , m_decodedDataDeletionTimer(this, &CachedScript::decodedDataDeletionTimerFired)

    42 {

    43     // It's javascript we want.

    44     // But some websites think their scripts are <some wrong mimetype here>

    45     // and refuse to serve them if we only accept application/x-javascript.

    46     setAccept("*/*");

    47 }

    48 

    49 CachedScript::~CachedScript()

    50 {

    51 }

    52 

    53 void CachedScript::allClientsRemoved()

    54 {

    55     m_decodedDataDeletionTimer.startOneShot(0);

    56 }

    57 

    58 void CachedScript::setEncoding(const String& chs)

    59 {

    60     m_decoder->setEncoding(chs, TextResourceDecoder::EncodingFromHTTPHeader);

    61 }

    62 

    63 String CachedScript::encoding() const

    64 {

    65     return m_decoder->encoding().name();

    66 }

    67 

    68 const String& CachedScript::script()

    69 {

    70     ASSERT(!isPurgeable());

    71 

    72     if (!m_script && m_data) {

    73         m_script = m_decoder->decode(m_data->data(), encodedSize());

    74         m_script += m_decoder->flush();

    75         setDecodedSize(m_script.length() * sizeof(UChar));

    76     }

    77     m_decodedDataDeletionTimer.startOneShot(0);

    78     return m_script;

    79 }

    80 

    81 void CachedScript::data(PassRefPtr<SharedBuffer> data, bool allDataReceived)

    82 {

    83     if (!allDataReceived)

    84         return;

    85 

    86     m_data = data;

    87     setEncodedSize(m_data.get() ? m_data->size() : 0);

    88     setLoading(false);

    89     checkNotify();

    90 }

    91 

    92 void CachedScript::checkNotify()

    93 {

    94     if (isLoading())

    95         return;

    96 

    97     CachedResourceClientWalker w(m_clients);

    98     while (CachedResourceClient* c = w.next())

    99         c->notifyFinished(this);

   100 }

   101 

   102 void CachedScript::error()

   103 {

   104     setLoading(false);

   105     setErrorOccurred(true);

   106     checkNotify();

   107 }

   108 

   109 void CachedScript::destroyDecodedData()

   110 {

   111     m_script = String();

   112     setDecodedSize(0);

   113     if (isSafeToMakePurgeable())

   114         makePurgeable(true);

   115 }

   116 

   117 void CachedScript::decodedDataDeletionTimerFired(Timer<CachedScript>*)

   118 {

   119     destroyDecodedData();

   120 }

   121 

   122 } // namespace WebCore