Move webkit/{browser,common}/dom_storage into content/

webkit/browser/dom_storage/dom_storage_host.cc

-// 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 "webkit/browser/dom_storage/dom_storage_host.h"
-
-#include "url/gurl.h"
-#include "webkit/browser/dom_storage/dom_storage_area.h"
-#include "webkit/browser/dom_storage/dom_storage_context.h"
-#include "webkit/browser/dom_storage/dom_storage_namespace.h"
-#include "webkit/common/dom_storage/dom_storage_types.h"
-
-namespace dom_storage {
-
-DomStorageHost::DomStorageHost(DomStorageContext* context)
-    : context_(context) {
-}
-
-DomStorageHost::~DomStorageHost() {
-  AreaMap::const_iterator it = connections_.begin();
-  for (; it != connections_.end(); ++it)
-    it->second.namespace_->CloseStorageArea(it->second.area_.get());
-  connections_.clear();  // Clear prior to releasing the context_
-}
-
-bool DomStorageHost::OpenStorageArea(int connection_id, int namespace_id,
-                                     const GURL& origin) {
-  DCHECK(!GetOpenArea(connection_id));
-  if (GetOpenArea(connection_id))
-    return false;  // Indicates the renderer gave us very bad data.
-  NamespaceAndArea references;
-  references.namespace_ = context_->GetStorageNamespace(namespace_id);
-  if (!references.namespace_.get()) {
-    // TODO(michaeln): Fix crbug/134003 and return false here.
-    // Until then return true to avoid crashing the renderer for
-    // sending a bad message.
-    return true;
-  }
-  references.area_ = references.namespace_->OpenStorageArea(origin);
-  DCHECK(references.area_.get());
-  connections_[connection_id] = references;
-  return true;
-}
-
-void DomStorageHost::CloseStorageArea(int connection_id) {
-  AreaMap::iterator found = connections_.find(connection_id);
-  if (found == connections_.end())
-    return;
-  found->second.namespace_->CloseStorageArea(found->second.area_.get());
-  connections_.erase(found);
-}
-
-bool DomStorageHost::ExtractAreaValues(
-    int connection_id, ValuesMap* map) {
-  map->clear();
-  DomStorageArea* area = GetOpenArea(connection_id);
-  if (!area) {
-    // TODO(michaeln): Fix crbug/134003 and return false here.
-    // Until then return true to avoid crashing the renderer
-    // for sending a bad message.
-    return true;
-  }
-  if (!area->IsLoadedInMemory()) {
-    DomStorageNamespace* ns = GetNamespace(connection_id);
-    DCHECK(ns);
-    if (ns->CountInMemoryAreas() > kMaxInMemoryAreas) {
-      ns->PurgeMemory(DomStorageNamespace::PURGE_UNOPENED);
-      if (ns->CountInMemoryAreas() > kMaxInMemoryAreas)
-        ns->PurgeMemory(DomStorageNamespace::PURGE_AGGRESSIVE);
-    }
-  }
-  area->ExtractValues(map);
-  return true;
-}
-
-unsigned DomStorageHost::GetAreaLength(int connection_id) {
-  DomStorageArea* area = GetOpenArea(connection_id);
-  if (!area)
-    return 0;
-  return area->Length();
-}
-
-base::NullableString16 DomStorageHost::GetAreaKey(int connection_id,
-                                                  unsigned index) {
-  DomStorageArea* area = GetOpenArea(connection_id);
-  if (!area)
-    return base::NullableString16();
-  return area->Key(index);
-}
-
-base::NullableString16 DomStorageHost::GetAreaItem(int connection_id,
-                                                   const base::string16& key) {
-  DomStorageArea* area = GetOpenArea(connection_id);
-  if (!area)
-    return base::NullableString16();
-  return area->GetItem(key);
-}
-
-bool DomStorageHost::SetAreaItem(
-    int connection_id, const base::string16& key,
-    const base::string16& value, const GURL& page_url,
-    base::NullableString16* old_value) {
-  DomStorageArea* area = GetOpenArea(connection_id);
-  if (!area) {
-    // TODO(michaeln): Fix crbug/134003 and return false here.
-    // Until then return true to allow the renderer to operate
-    // to a limited degree out of its cache.
-    return true;
-  }
-  if (!area->SetItem(key, value, old_value))
-    return false;
-  if (old_value->is_null() || old_value->string() != value)
-    context_->NotifyItemSet(area, key, value, *old_value, page_url);
-  return true;
-}
-
-bool DomStorageHost::RemoveAreaItem(
-    int connection_id, const base::string16& key, const GURL& page_url,
-    base::string16* old_value) {
-  DomStorageArea* area = GetOpenArea(connection_id);
-  if (!area)
-    return false;
-  if (!area->RemoveItem(key, old_value))
-    return false;
-  context_->NotifyItemRemoved(area, key, *old_value, page_url);
-  return true;
-}
-
-bool DomStorageHost::ClearArea(int connection_id, const GURL& page_url) {
-  DomStorageArea* area = GetOpenArea(connection_id);
-  if (!area)
-    return false;
-  if (!area->Clear())
-    return false;
-  context_->NotifyAreaCleared(area, page_url);
-  return true;
-}
-
-bool DomStorageHost::HasAreaOpen(
-    int namespace_id, const GURL& origin) const {
-  AreaMap::const_iterator it = connections_.begin();
-  for (; it != connections_.end(); ++it) {
-    if (namespace_id == it->second.namespace_->namespace_id() &&
-        origin == it->second.area_->origin()) {
-      return true;
-    }
-  }
-  return false;
-}
-
-DomStorageArea* DomStorageHost::GetOpenArea(int connection_id) {
-  AreaMap::iterator found = connections_.find(connection_id);
-  if (found == connections_.end())
-    return NULL;
-  return found->second.area_.get();
-}
-
-DomStorageNamespace* DomStorageHost::GetNamespace(int connection_id) {
-  AreaMap::iterator found = connections_.find(connection_id);
-  if (found == connections_.end())
-    return NULL;
-  return found->second.namespace_.get();
-}
-
-// NamespaceAndArea
-
-DomStorageHost::NamespaceAndArea::NamespaceAndArea() {}
-DomStorageHost::NamespaceAndArea::~NamespaceAndArea() {}
-
-}  // namespace dom_storage