WebCore/storage/Storage.cpp

   1 /*
   2  * Copyright (C) 2008 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 "Storage.h"
  28
  29 #include "StorageArea.h"
  30 #include "PlatformString.h"
  31 #include <wtf/PassRefPtr.h>
  32
  33 namespace WebCore {
  34
  35 PassRefPtr<Storage> Storage::create(Frame* frame, PassRefPtr<StorageArea> storageArea)
  36 {
  37     return adoptRef(new Storage(frame, storageArea));
  38 }
  39
  40 Storage::Storage(Frame* frame, PassRefPtr<StorageArea> storageArea)
  41     : m_frame(frame)
  42     , m_storageArea(storageArea)
  43 {
  44     ASSERT(m_frame);
  45     ASSERT(m_storageArea);
  46 }
  47
  48 unsigned Storage::length() const
  49 {
  50     if (!m_frame)
  51         return 0;
  52
  53     return m_storageArea->length();
  54 }
  55
  56 String Storage::key(unsigned index, ExceptionCode& ec) const
  57 {
  58     ec = 0;
  59     if (!m_frame)
  60         return String();
  61
  62     return m_storageArea->key(index, ec);
  63 }
  64
  65 String Storage::getItem(const String& key) const
  66 {
  67     if (!m_frame)
  68         return String();
  69
  70     return m_storageArea->getItem(key);
  71 }
  72
  73 void Storage::setItem(const String& key, const String& value, ExceptionCode& ec)
  74 {
  75     ec = 0;
  76     if (!m_frame)
  77         return;
  78
  79     m_storageArea->setItem(key, value, ec, m_frame);
  80 }
  81
  82 void Storage::removeItem(const String& key)
  83 {
  84     if (!m_frame)
  85         return;
  86
  87     m_storageArea->removeItem(key, m_frame);
  88 }
  89
  90 void Storage::clear()
  91 {
  92     if (!m_frame)
  93         return;
  94
  95     m_storageArea->clear(m_frame);
  96 }
  97
  98 bool Storage::contains(const String& key) const
  99 {
 100     if (!m_frame)
 101         return false;
 102
 103     return m_storageArea->contains(key);
 104 }
 105
 106 }