Framing for a DOMStorage backend that does not depend on in-process-webkit.

webkit/dom_storage/dom_storage_namespace.cc

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.  Use of this
+// Copyright (c) 2012 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 "content/browser/in_process_webkit/dom_storage_namespace.h"
+#include "webkit/dom_storage/dom_storage_namespace.h"
 
-#include "base/file_path.h"
-#include "content/browser/in_process_webkit/dom_storage_area.h"
-#include "content/browser/in_process_webkit/dom_storage_context.h"
-#include "content/browser/in_process_webkit/dom_storage_message_filter.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebStorageArea.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebStorageNamespace.h"
-#include "webkit/glue/webkit_glue.h"
+#include "base/basictypes.h"
 
-using WebKit::WebStorageArea;
-using WebKit::WebStorageNamespace;
-using WebKit::WebString;
+namespace dom_storage {
 
-/* static */
-DOMStorageNamespace* DOMStorageNamespace::CreateLocalStorageNamespace(
-    DOMStorageContext* dom_storage_context, const FilePath& data_dir_path) {
-  int64 id = kLocalStorageNamespaceId;
-  DCHECK(!dom_storage_context->GetStorageNamespace(id, false));
-  return new DOMStorageNamespace(dom_storage_context, id,
-      webkit_glue::FilePathToWebString(data_dir_path), DOM_STORAGE_LOCAL);
+DOMStorageArea* DOMStorageNamespace::GetStorageArea(const GURL& origin) {
+  return NULL;
 }
 
-/* static */
-DOMStorageNamespace* DOMStorageNamespace::CreateSessionStorageNamespace(
-    DOMStorageContext* dom_storage_context, int64 id) {
-  DCHECK(!dom_storage_context->GetStorageNamespace(id, false));
-  return new DOMStorageNamespace(dom_storage_context, id, WebString(),
-                                 DOM_STORAGE_SESSION);
-}
-
-DOMStorageNamespace::DOMStorageNamespace(DOMStorageContext* dom_storage_context,
-                                         int64 id,
-                                         const WebString& data_dir_path,
-                                         DOMStorageType dom_storage_type)
-    : dom_storage_context_(dom_storage_context),
-      id_(id),
-      data_dir_path_(data_dir_path),
-      dom_storage_type_(dom_storage_type) {
-  DCHECK(dom_storage_context_);
-}
-
-DOMStorageNamespace::~DOMStorageNamespace() {
-  // TODO(jorlow): If the DOMStorageContext is being destructed, there's no need
-  //               to do these calls.  Maybe we should add a fast path?
-  for (OriginToStorageAreaMap::iterator iter(origin_to_storage_area_.begin());
-       iter != origin_to_storage_area_.end(); ++iter) {
-    dom_storage_context_->UnregisterStorageArea(iter->second);
-    delete iter->second;
-  }
-}
-
-DOMStorageArea* DOMStorageNamespace::GetStorageArea(const string16& origin) {
-  // We may have already created it for another dispatcher host.
-  OriginToStorageAreaMap::iterator iter = origin_to_storage_area_.find(origin);
-  if (iter != origin_to_storage_area_.end())
-    return iter->second;
-
-  // We need to create a new one.
-  int64 id = dom_storage_context_->AllocateStorageAreaId();
-  DCHECK(!dom_storage_context_->GetStorageArea(id));
-  DOMStorageArea* storage_area = new DOMStorageArea(origin, id, this);
-  origin_to_storage_area_[origin] = storage_area;
-  dom_storage_context_->RegisterStorageArea(storage_area);
-  return storage_area;
-}
-
-DOMStorageNamespace* DOMStorageNamespace::Copy(int64 id) {
-  DCHECK(dom_storage_type_ == DOM_STORAGE_SESSION);
-  DCHECK(!dom_storage_context_->GetStorageNamespace(id, false));
-  DOMStorageNamespace* new_storage_namespace = new DOMStorageNamespace(
-      dom_storage_context_, id, data_dir_path_, dom_storage_type_);
-  // If we haven't used the namespace yet, there's nothing to copy.
-  if (storage_namespace_.get())
-    new_storage_namespace->storage_namespace_.reset(storage_namespace_->copy());
-  return new_storage_namespace;
-}
-
-void DOMStorageNamespace::PurgeMemory() {
-  DCHECK(dom_storage_type_ == DOM_STORAGE_LOCAL);
-  for (OriginToStorageAreaMap::iterator iter(origin_to_storage_area_.begin());
-       iter != origin_to_storage_area_.end(); ++iter)
-    iter->second->PurgeMemory();
-  storage_namespace_.reset();
-}
-
-WebStorageArea* DOMStorageNamespace::CreateWebStorageArea(
-    const string16& origin) {
-  CreateWebStorageNamespaceIfNecessary();
-  return storage_namespace_->createStorageArea(origin);
-}
-
-void DOMStorageNamespace::CreateWebStorageNamespaceIfNecessary() {
-  if (storage_namespace_.get())
-    return;
-
-  if (dom_storage_type_ == DOM_STORAGE_LOCAL) {
-    storage_namespace_.reset(
-        WebStorageNamespace::createLocalStorageNamespace(data_dir_path_,
-            WebStorageNamespace::m_localStorageQuota));
-  } else {
-    storage_namespace_.reset(WebStorageNamespace::createSessionStorageNamespace(
-        WebStorageNamespace::m_sessionStorageQuota));
-  }
-}
+}  // namespace dom_storage