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      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 #if ENABLE(DOM_STORAGE)
     30 
     31 #include "StorageArea.h"
     32 #include "PlatformString.h"
     33 #include <wtf/PassRefPtr.h>
     34 
     35 namespace WebCore {
     36 
     37 PassRefPtr<Storage> Storage::create(Frame* frame, PassRefPtr<StorageArea> storageArea)
     38 {
     39     return adoptRef(new Storage(frame, storageArea));
     40 }
     41 
     42 Storage::Storage(Frame* frame, PassRefPtr<StorageArea> storageArea)
     43     : m_frame(frame)
     44     , m_storageArea(storageArea)
     45 {
     46     ASSERT(m_frame);
     47     ASSERT(m_storageArea);
     48 }
     49 
     50 Storage::~Storage()
     51 {
     52 }
     53 
     54 unsigned Storage::length() const
     55 {
     56     if (!m_frame)
     57         return 0;
     58 
     59     return m_storageArea->length();
     60 }
     61 
     62 String Storage::key(unsigned index) const
     63 {
     64     if (!m_frame)
     65         return String();
     66 
     67     return m_storageArea->key(index);
     68 }
     69 
     70 String Storage::getItem(const String& key) const
     71 {
     72     if (!m_frame)
     73         return String();
     74 
     75     return m_storageArea->getItem(key);
     76 }
     77 
     78 void Storage::setItem(const String& key, const String& value, ExceptionCode& ec)
     79 {
     80     ec = 0;
     81     if (!m_frame)
     82         return;
     83 
     84     m_storageArea->setItem(key, value, ec, m_frame);
     85 }
     86 
     87 void Storage::removeItem(const String& key)
     88 {
     89     if (!m_frame)
     90         return;
     91 
     92     m_storageArea->removeItem(key, m_frame);
     93 }
     94 
     95 void Storage::clear()
     96 {
     97     if (!m_frame)
     98         return;
     99 
    100     m_storageArea->clear(m_frame);
    101 }
    102 
    103 bool Storage::contains(const String& key) const
    104 {
    105     if (!m_frame)
    106         return false;
    107 
    108     return m_storageArea->contains(key);
    109 }
    110 
    111 }
    112 
    113 #endif // ENABLE(DOM_STORAGE)
    114