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// Copyright (c) 2010 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/browser/in_process_webkit/dom_storage_namespace.h"
#include "base/file_path.h"
#include "chrome/browser/in_process_webkit/dom_storage_area.h"
#include "chrome/browser/in_process_webkit/dom_storage_context.h"
#include "chrome/browser/in_process_webkit/dom_storage_dispatcher_host.h"
#include "third_party/WebKit/WebKit/chromium/public/WebStorageArea.h"
#include "third_party/WebKit/WebKit/chromium/public/WebStorageNamespace.h"
#include "webkit/glue/webkit_glue.h"
using WebKit::WebStorageArea;
using WebKit::WebStorageNamespace;
using WebKit::WebString;
/* 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);
}
/* 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,
HostContentSettingsMap* host_content_settings_map) {
// 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,
host_content_settings_map);
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_,
kLocalStorageQuota));
} else {
storage_namespace_.reset(
WebStorageNamespace::createSessionStorageNamespace());
}
}
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