src/third_party/WebKit/Source/core/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 "core/storage/Storage.h"
  28
  29 #include "bindings/core/v8/ExceptionState.h"
  30 #include "wtf/PassOwnPtr.h"
  31 #include "wtf/PassRefPtr.h"
  32 #include "wtf/text/WTFString.h"
  33
  34 namespace blink {
  35
  36 PassRefPtrWillBeRawPtr<Storage> Storage::create(LocalFrame* frame, PassOwnPtrWillBeRawPtr<StorageArea> storageArea)
  37 {
  38     return adoptRefWillBeNoop(new Storage(frame, storageArea));
  39 }
  40
  41 Storage::Storage(LocalFrame* frame, PassOwnPtrWillBeRawPtr<StorageArea> storageArea)
  42     : DOMWindowProperty(frame)
  43     , m_storageArea(storageArea)
  44 {
  45     ASSERT(m_frame);
  46     ASSERT(m_storageArea);
  47 }
  48
  49 DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(Storage);
  50
  51 String Storage::anonymousIndexedGetter(unsigned index, ExceptionState& exceptionState)
  52 {
  53     return anonymousNamedGetter(AtomicString::number(index), exceptionState);
  54 }
  55
  56 String Storage::anonymousNamedGetter(const AtomicString& name, ExceptionState& exceptionState)
  57 {
  58     bool found = contains(name, exceptionState);
  59     if (exceptionState.hadException() || !found)
  60         return String();
  61     String result = getItem(name, exceptionState);
  62     if (exceptionState.hadException())
  63         return String();
  64     return result;
  65 }
  66
  67 bool Storage::anonymousNamedSetter(const AtomicString& name, const AtomicString& value, ExceptionState& exceptionState)
  68 {
  69     setItem(name, value, exceptionState);
  70     return true;
  71 }
  72
  73 bool Storage::anonymousIndexedSetter(unsigned index, const AtomicString& value, ExceptionState& exceptionState)
  74 {
  75     return anonymousNamedSetter(AtomicString::number(index), value, exceptionState);
  76 }
  77
  78 DeleteResult Storage::anonymousNamedDeleter(const AtomicString& name, ExceptionState& exceptionState)
  79 {
  80     bool found = contains(name, exceptionState);
  81     if (!found)
  82         return DeleteUnknownProperty;
  83     if (exceptionState.hadException())
  84         return DeleteReject;
  85     removeItem(name, exceptionState);
  86     if (exceptionState.hadException())
  87         return DeleteReject;
  88     return DeleteSuccess;
  89 }
  90
  91 DeleteResult Storage::anonymousIndexedDeleter(unsigned index, ExceptionState& exceptionState)
  92 {
  93     DeleteResult result = anonymousNamedDeleter(AtomicString::number(index), exceptionState);
  94     return result == DeleteUnknownProperty ? DeleteSuccess : result;
  95 }
  96
  97 void Storage::namedPropertyEnumerator(Vector<String>& names, ExceptionState& exceptionState)
  98 {
  99     unsigned length = this->length(exceptionState);
 100     if (exceptionState.hadException())
 101         return;
 102     names.resize(length);
 103     for (unsigned i = 0; i < length; ++i) {
 104         String key = this->key(i, exceptionState);
 105         if (exceptionState.hadException())
 106             return;
 107         ASSERT(!key.isNull());
 108         String val = getItem(key, exceptionState);
 109         if (exceptionState.hadException())
 110             return;
 111         names[i] = key;
 112     }
 113 }
 114
 115 bool Storage::namedPropertyQuery(const AtomicString& name, ExceptionState& exceptionState)
 116 {
 117     if (name == "length")
 118         return false;
 119     bool found = contains(name, exceptionState);
 120     if (exceptionState.hadException() || !found)
 121         return false;
 122     return true;
 123 }
 124
 125 void Storage::trace(Visitor* visitor)
 126 {
 127     visitor->trace(m_storageArea);
 128     DOMWindowProperty::trace(visitor);
 129 }
 130
 131 }