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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 "webkit/appcache/appcache_storage.h"
#include "base/stl_util.h"
#include "webkit/appcache/appcache_response.h"
#include "webkit/appcache/appcache_service.h"
#include "webkit/quota/quota_client.h"
#include "webkit/quota/quota_manager.h"
namespace appcache {
// static
const int64 AppCacheStorage::kUnitializedId = -1;
AppCacheStorage::AppCacheStorage(AppCacheService* service)
: last_cache_id_(kUnitializedId), last_group_id_(kUnitializedId),
last_response_id_(kUnitializedId), service_(service) {
}
AppCacheStorage::~AppCacheStorage() {
STLDeleteValues(&pending_info_loads_);
DCHECK(delegate_references_.empty());
}
AppCacheStorage::DelegateReference::DelegateReference(
Delegate* delegate, AppCacheStorage* storage)
: delegate(delegate), storage(storage) {
storage->delegate_references_.insert(
DelegateReferenceMap::value_type(delegate, this));
}
AppCacheStorage::DelegateReference::~DelegateReference() {
if (delegate)
storage->delegate_references_.erase(delegate);
}
AppCacheStorage::ResponseInfoLoadTask::ResponseInfoLoadTask(
const GURL& manifest_url,
int64 response_id,
AppCacheStorage* storage)
: storage_(storage),
manifest_url_(manifest_url),
response_id_(response_id),
info_buffer_(new HttpResponseInfoIOBuffer),
ALLOW_THIS_IN_INITIALIZER_LIST(read_callback_(
this, &ResponseInfoLoadTask::OnReadComplete)) {
storage_->pending_info_loads_.insert(
PendingResponseInfoLoads::value_type(response_id, this));
}
AppCacheStorage::ResponseInfoLoadTask::~ResponseInfoLoadTask() {
}
void AppCacheStorage::ResponseInfoLoadTask::StartIfNeeded() {
if (reader_.get())
return;
reader_.reset(
storage_->CreateResponseReader(manifest_url_, response_id_));
reader_->ReadInfo(info_buffer_, &read_callback_);
}
void AppCacheStorage::ResponseInfoLoadTask::OnReadComplete(int result) {
storage_->pending_info_loads_.erase(response_id_);
scoped_refptr<AppCacheResponseInfo> info;
if (result >= 0) {
info = new AppCacheResponseInfo(storage_->service(), manifest_url_,
response_id_,
info_buffer_->http_info.release(),
info_buffer_->response_data_size);
}
FOR_EACH_DELEGATE(delegates_, OnResponseInfoLoaded(info.get(), response_id_));
delete this;
}
void AppCacheStorage::LoadResponseInfo(
const GURL& manifest_url, int64 id, Delegate* delegate) {
AppCacheResponseInfo* info = working_set_.GetResponseInfo(id);
if (info) {
delegate->OnResponseInfoLoaded(info, id);
return;
}
ResponseInfoLoadTask* info_load =
GetOrCreateResponseInfoLoadTask(manifest_url, id);
DCHECK(manifest_url == info_load->manifest_url());
DCHECK(id == info_load->response_id());
info_load->AddDelegate(GetOrCreateDelegateReference(delegate));
info_load->StartIfNeeded();
}
void AppCacheStorage::UpdateUsageMapAndNotify(
const GURL& origin, int64 new_usage) {
DCHECK_GE(new_usage, 0);
int64 old_usage = usage_map_[origin];
if (new_usage > 0)
usage_map_[origin] = new_usage;
else
usage_map_.erase(origin);
if (new_usage != old_usage && service()->quota_manager_proxy()) {
service()->quota_manager_proxy()->NotifyStorageModified(
quota::QuotaClient::kAppcache,
origin, quota::kStorageTypeTemporary,
new_usage - old_usage);
}
}
void AppCacheStorage::ClearUsageMapAndNotify() {
if (service()->quota_manager_proxy()) {
for (UsageMap::const_iterator iter = usage_map_.begin();
iter != usage_map_.end(); ++iter) {
service()->quota_manager_proxy()->NotifyStorageModified(
quota::QuotaClient::kAppcache,
iter->first, quota::kStorageTypeTemporary,
-(iter->second));
}
}
usage_map_.clear();
}
void AppCacheStorage::NotifyStorageAccessed(const GURL& origin) {
if (service()->quota_manager_proxy() &&
usage_map_.find(origin) != usage_map_.end())
service()->quota_manager_proxy()->NotifyStorageAccessed(
quota::QuotaClient::kAppcache,
origin, quota::kStorageTypeTemporary);
}
} // namespace appcache
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