WebCore/bindings/v8/custom/V8StorageCustom.cpp

   1 /*
   2 * Copyright (C) 2009 Google 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 are
   6 * met:
   7 *
   8 *     * Redistributions of source code must retain the above copyright
   9 * notice, this list of conditions and the following disclaimer.
  10 *     * Redistributions in binary form must reproduce the above
  11 * copyright notice, this list of conditions and the following disclaimer
  12 * in the documentation and/or other materials provided with the
  13 * distribution.
  14 *     * Neither the name of Google Inc. nor the names of its
  15 * contributors may be used to endorse or promote products derived from
  16 * this software without specific prior written permission.
  17 *
  18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29 */
  30
  31 #include "config.h"
  32
  33 #if ENABLE(DOM_STORAGE)
  34 #include "V8Storage.h"
  35
  36 #include "Storage.h"
  37 #include "V8Binding.h"
  38 #include "V8CustomBinding.h"
  39 #include "V8Proxy.h"
  40
  41 namespace WebCore {
  42
  43 // Get an array containing the names of indexed properties in a collection.
  44 v8::Handle<v8::Array> V8Storage::namedPropertyEnumerator(const v8::AccessorInfo& info)
  45 {
  46     Storage* storage = V8DOMWrapper::convertToNativeObject<Storage>(V8ClassIndex::STORAGE, info.Holder());
  47     unsigned int length = storage->length();
  48     v8::Handle<v8::Array> properties = v8::Array::New(length);
  49     for (unsigned int i = 0; i < length; ++i) {
  50         String key = storage->key(i);
  51         ASSERT(!key.isNull());
  52         String val = storage->getItem(key);
  53         properties->Set(v8::Integer::New(i), v8String(key));
  54     }
  55
  56     return properties;
  57 }
  58
  59 static v8::Handle<v8::Value> storageGetter(v8::Local<v8::String> v8Name, const v8::AccessorInfo& info)
  60 {
  61     Storage* storage = V8DOMWrapper::convertToNativeObject<Storage>(V8ClassIndex::STORAGE, info.Holder());
  62     String name = toWebCoreString(v8Name);
  63
  64     if (storage->contains(name) && name != "length")
  65         return v8String(storage->getItem(name));
  66
  67     return notHandledByInterceptor();
  68 }
  69
  70 v8::Handle<v8::Value> V8Storage::indexedPropertyGetter(uint32_t index, const v8::AccessorInfo& info)
  71 {
  72     INC_STATS("DOM.Storage.IndexedPropertyGetter");
  73     v8::Local<v8::Integer> indexV8 = v8::Integer::New(index);
  74     return storageGetter(indexV8->ToString(), info);
  75 }
  76
  77 v8::Handle<v8::Value> V8Storage::namedPropertyGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
  78 {
  79     INC_STATS("DOM.Storage.NamedPropertyGetter");
  80     return storageGetter(name, info);
  81 }
  82
  83 static v8::Handle<v8::Value> storageSetter(v8::Local<v8::String> v8Name, v8::Local<v8::Value> v8Value, const v8::AccessorInfo& info)
  84 {
  85     Storage* storage = V8DOMWrapper::convertToNativeObject<Storage>(V8ClassIndex::STORAGE, info.Holder());
  86     String name = toWebCoreString(v8Name);
  87     String value = toWebCoreString(v8Value);
  88
  89     // Silently ignore length (rather than letting the bindings raise an exception).
  90     if (name == "length")
  91         return v8Value;
  92
  93     v8::Handle<v8::Value> prototypeValue = info.Holder()->GetRealNamedPropertyInPrototypeChain(v8Name);
  94     if (!prototypeValue.IsEmpty())
  95         return notHandledByInterceptor();
  96
  97     ExceptionCode ec = 0;
  98     storage->setItem(name, value, ec);
  99     if (ec)
 100         return throwError(ec);
 101
 102     return v8Value;
 103 }
 104
 105 v8::Handle<v8::Value> V8Storage::indexedPropertySetter(uint32_t index, v8::Local<v8::Value> value, const v8::AccessorInfo& info)
 106 {
 107     INC_STATS("DOM.Storage.NamedPropertyGetter");
 108     v8::Local<v8::Integer> indexV8 = v8::Integer::New(index);
 109     return storageSetter(indexV8->ToString(), value, info);
 110 }
 111
 112 v8::Handle<v8::Value> V8Storage::namedPropertySetter(v8::Local<v8::String> name, v8::Local<v8::Value> value, const v8::AccessorInfo& info)
 113 {
 114     INC_STATS("DOM.Storage.NamedPropertySetter");
 115     return storageSetter(name, value, info);
 116 }
 117
 118 static v8::Handle<v8::Boolean> storageDeleter(v8::Local<v8::String> v8Name, const v8::AccessorInfo& info)
 119 {
 120     Storage* storage = V8DOMWrapper::convertToNativeObject<Storage>(V8ClassIndex::STORAGE, info.Holder());
 121     String name = toWebCoreString(v8Name);
 122
 123     if (storage->contains(name)) {
 124         storage->removeItem(name);
 125         return v8::True();
 126     }
 127
 128     return deletionNotHandledByInterceptor();
 129 }
 130
 131 v8::Handle<v8::Boolean> V8Storage::indexedPropertyDeleter(uint32_t index, const v8::AccessorInfo& info)
 132 {
 133     INC_STATS("DOM.Storage.IndexedPropertyDeleter");
 134     v8::Local<v8::Integer> indexV8 = v8::Integer::New(index);
 135     return storageDeleter(indexV8->ToString(), info);
 136 }
 137
 138 v8::Handle<v8::Boolean> V8Storage::namedPropertyDeleter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
 139 {
 140     INC_STATS("DOM.Storage.NamedPropertyDeleter");
 141     return storageDeleter(name, info);
 142 }
 143
 144 } // namespace WebCore
 145
 146 #endif