webkit/src/WebCore/bindings/v8/custom/V8StorageCustom.cpp

/*
* Copyright (C) 2009 Google Inc. All rights reserved.
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#include "config.h"

#if ENABLE(DOM_STORAGE)

#include "Storage.h"
#include "V8Binding.h"
#include "V8CustomBinding.h"
#include "V8Proxy.h"

namespace WebCore {

// Get an array containing the names of indexed properties in a collection.
v8::Handle<v8::Array> V8Custom::v8StorageNamedPropertyEnumerator(const v8::AccessorInfo& info)
{
    Storage* storage = V8DOMWrapper::convertToNativeObject<Storage>(V8ClassIndex::STORAGE, info.Holder());
    unsigned int length = storage->length();
    v8::Handle<v8::Array> properties = v8::Array::New(length);
    for (unsigned int i = 0; i < length; ++i) {
        String key = storage->key(i);
        ASSERT(!key.isNull());
        String val = storage->getItem(key);
        properties->Set(v8::Integer::New(i), v8String(key));
    }

    return properties;
}

static v8::Handle<v8::Value> storageGetter(v8::Local<v8::String> v8Name, const v8::AccessorInfo& info)
{
    Storage* storage = V8DOMWrapper::convertToNativeObject<Storage>(V8ClassIndex::STORAGE, info.Holder());
    String name = toWebCoreString(v8Name);

    if (storage->contains(name) && name != "length")
        return v8String(storage->getItem(name));

    return notHandledByInterceptor();
}

INDEXED_PROPERTY_GETTER(Storage)
{
    INC_STATS("DOM.Storage.IndexedPropertyGetter");
    v8::Local<v8::Integer> indexV8 = v8::Integer::New(index);
    return storageGetter(indexV8->ToString(), info);
}

NAMED_PROPERTY_GETTER(Storage)
{
    INC_STATS("DOM.Storage.NamedPropertyGetter");
    return storageGetter(name, info);
}

static v8::Handle<v8::Value> storageSetter(v8::Local<v8::String> v8Name, v8::Local<v8::Value> v8Value, const v8::AccessorInfo& info)
{
    Storage* storage = V8DOMWrapper::convertToNativeObject<Storage>(V8ClassIndex::STORAGE, info.Holder());
    String name = toWebCoreString(v8Name);
    String value = toWebCoreString(v8Value);

    // Silently ignore length (rather than letting the bindings raise an exception).
    if (name == "length")
        return v8Value;

    v8::Handle<v8::Value> prototypeValue = info.Holder()->GetRealNamedPropertyInPrototypeChain(v8Name);
    if (!prototypeValue.IsEmpty())
        return notHandledByInterceptor();

    ExceptionCode ec = 0;
    storage->setItem(name, value, ec);
    if (ec)
        return throwError(ec);

    return v8Value;
}

INDEXED_PROPERTY_SETTER(Storage)
{
    INC_STATS("DOM.Storage.NamedPropertyGetter");
    v8::Local<v8::Integer> indexV8 = v8::Integer::New(index);
    return storageSetter(indexV8->ToString(), value, info);
}

NAMED_PROPERTY_SETTER(Storage)
{
    INC_STATS("DOM.Storage.NamedPropertySetter");
    return storageSetter(name, value, info);
}

static v8::Handle<v8::Boolean> storageDeleter(v8::Local<v8::String> v8Name, const v8::AccessorInfo& info)
{
    Storage* storage = V8DOMWrapper::convertToNativeObject<Storage>(V8ClassIndex::STORAGE, info.Holder());
    String name = toWebCoreString(v8Name);
    
    if (storage->contains(name)) {
        storage->removeItem(name);
        return v8::True();
    }

    return deletionNotHandledByInterceptor();
}

INDEXED_PROPERTY_DELETER(Storage)
{
    INC_STATS("DOM.Storage.IndexedPropertyDeleter");
    v8::Local<v8::Integer> indexV8 = v8::Integer::New(index);
    return storageDeleter(indexV8->ToString(), info);
}

NAMED_PROPERTY_DELETER(Storage)
{
    INC_STATS("DOM.Storage.NamedPropertyDeleter");
    return storageDeleter(name, info);
}

} // namespace WebCore

#endif