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// Copyright (c) 2009 The Chromium Authors. All rights reserved. Use of this
// source code is governed by a BSD-style license that can be found in the
// LICENSE file.
#include "chrome/renderer/renderer_webstoragenamespace_impl.h"
#include "chrome/common/render_messages.h"
#include "chrome/renderer/render_thread.h"
#include "chrome/renderer/renderer_webstoragearea_impl.h"
using WebKit::WebStorageArea;
using WebKit::WebStorageNamespace;
using WebKit::WebString;
RendererWebStorageNamespaceImpl::RendererWebStorageNamespaceImpl(
DOMStorageType storage_type)
: storage_type_(storage_type),
namespace_id_(kUninitializedNamespaceId) {
}
RendererWebStorageNamespaceImpl::RendererWebStorageNamespaceImpl(
DOMStorageType storage_type, int64 namespace_id)
: storage_type_(storage_type),
namespace_id_(namespace_id) {
DCHECK(namespace_id_ != kUninitializedNamespaceId);
}
RendererWebStorageNamespaceImpl::~RendererWebStorageNamespaceImpl() {
}
WebStorageArea* RendererWebStorageNamespaceImpl::createStorageArea(
const WebString& origin) {
// This could be done async in the background (started when this class is
// first instantiated) rather than lazily on first use, but it's unclear
// whether it's worth the complexity.
if (namespace_id_ == kUninitializedNamespaceId) {
RenderThread::current()->Send(
new ViewHostMsg_DOMStorageNamespaceId(storage_type_,
&namespace_id_));
DCHECK(namespace_id_ != kUninitializedNamespaceId);
}
// Ideally, we'd keep a hash map of origin to these objects. Unfortunately
// this doesn't seem practical because there's no good way to ref-count these
// objects, and it'd be unclear who owned them. So, instead, we'll pay a
// price for an allocaiton and IPC for each.
return new RendererWebStorageAreaImpl(namespace_id_, origin);
}
WebStorageNamespace* RendererWebStorageNamespaceImpl::copy() {
// If we haven't been used yet, we might as well start out fresh (and lazy).
if (namespace_id_ == kUninitializedNamespaceId)
return new RendererWebStorageNamespaceImpl(storage_type_);
// This cannot easily be deferred because we need a snapshot in time.
int64 new_namespace_id;
RenderThread::current()->Send(
new ViewHostMsg_DOMStorageCloneNamespaceId(namespace_id_,
&new_namespace_id));
return new RendererWebStorageNamespaceImpl(storage_type_,
new_namespace_id);
}
void RendererWebStorageNamespaceImpl::close() {
// This is called only on LocalStorage namespaces when WebKit thinks its
// shutting down. This has no impact on Chromium.
}
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