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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_group.h"
#include <algorithm>
#include "base/logging.h"
#include "webkit/appcache/appcache.h"
#include "webkit/appcache/appcache_host.h"
#include "webkit/appcache/appcache_service.h"
#include "webkit/appcache/appcache_storage.h"
#include "webkit/appcache/appcache_update_job.h"
namespace appcache {
AppCacheGroup::AppCacheGroup(AppCacheService* service,
const GURL& manifest_url)
: manifest_url_(manifest_url),
update_status_(IDLE),
is_obsolete_(false),
newest_complete_cache_(NULL),
update_job_(NULL),
service_(service) {
service_->storage()->working_set()->AddGroup(this);
}
AppCacheGroup::~AppCacheGroup() {
DCHECK(old_caches_.empty());
DCHECK(!newest_complete_cache_);
if (update_job_)
delete update_job_;
DCHECK_EQ(IDLE, update_status_);
service_->storage()->working_set()->RemoveGroup(this);
}
void AppCacheGroup::AddUpdateObserver(UpdateObserver* observer) {
observers_.AddObserver(observer);
}
void AppCacheGroup::RemoveUpdateObserver(UpdateObserver* observer) {
observers_.RemoveObserver(observer);
}
void AppCacheGroup::AddCache(AppCache* complete_cache) {
DCHECK(complete_cache->is_complete());
complete_cache->set_owning_group(this);
if (!newest_complete_cache_) {
newest_complete_cache_ = complete_cache;
return;
}
if (complete_cache->IsNewerThan(newest_complete_cache_)) {
old_caches_.push_back(newest_complete_cache_);
newest_complete_cache_ = complete_cache;
// Update hosts of older caches to add a reference to the newest cache.
for (Caches::iterator it = old_caches_.begin();
it != old_caches_.end(); ++it) {
AppCache::AppCacheHosts& hosts = (*it)->associated_hosts();
for (AppCache::AppCacheHosts::iterator host_it = hosts.begin();
host_it != hosts.end(); ++host_it) {
(*host_it)->SetSwappableCache(this);
}
}
} else {
old_caches_.push_back(complete_cache);
}
}
void AppCacheGroup::RemoveCache(AppCache* cache) {
DCHECK(cache->associated_hosts().empty());
if (cache == newest_complete_cache_) {
AppCache* tmp_cache = newest_complete_cache_;
newest_complete_cache_ = NULL;
tmp_cache->set_owning_group(NULL); // may cause this group to be deleted
} else {
Caches::iterator it =
std::find(old_caches_.begin(), old_caches_.end(), cache);
if (it != old_caches_.end()) {
AppCache* tmp_cache = *it;
old_caches_.erase(it);
tmp_cache->set_owning_group(NULL); // may cause group to be deleted
}
}
}
void AppCacheGroup::StartUpdateWithNewMasterEntry(
AppCacheHost* host, const GURL& new_master_resource) {
if (!update_job_)
update_job_ = new AppCacheUpdateJob(service_, this);
update_job_->StartUpdate(host, new_master_resource);
}
void AppCacheGroup::SetUpdateStatus(UpdateStatus status) {
if (status == update_status_)
return;
update_status_ = status;
if (status != IDLE) {
DCHECK(update_job_);
} else {
update_job_ = NULL;
FOR_EACH_OBSERVER(UpdateObserver, observers_, OnUpdateComplete(this));
}
}
} // namespace appcache
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