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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 "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 }
    132