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// 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 "chrome/browser/media_galleries/fileapi/mtp_device_map_service.h"
#include <string>
#include <utility>
#include "base/stl_util.h"
#include "chrome/browser/media_galleries/fileapi/mtp_device_async_delegate.h"
#include "webkit/browser/fileapi/isolated_context.h"
namespace {
base::LazyInstance<MTPDeviceMapService> g_mtp_device_map_service =
LAZY_INSTANCE_INITIALIZER;
} // namespace
// static
MTPDeviceMapService* MTPDeviceMapService::GetInstance() {
return g_mtp_device_map_service.Pointer();
}
/////////////////////////////////////////////////////////////////////////////
// Following methods are used to manage MTPDeviceAsyncDelegate objects. //
/////////////////////////////////////////////////////////////////////////////
void MTPDeviceMapService::AddAsyncDelegate(
const base::FilePath::StringType& device_location,
MTPDeviceAsyncDelegate* delegate) {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(delegate);
DCHECK(!device_location.empty());
if (ContainsKey(async_delegate_map_, device_location))
return;
async_delegate_map_[device_location] = delegate;
}
void MTPDeviceMapService::RemoveAsyncDelegate(
const base::FilePath::StringType& device_location) {
DCHECK(thread_checker_.CalledOnValidThread());
AsyncDelegateMap::iterator it = async_delegate_map_.find(device_location);
DCHECK(it != async_delegate_map_.end());
it->second->CancelPendingTasksAndDeleteDelegate();
async_delegate_map_.erase(it);
}
MTPDeviceAsyncDelegate* MTPDeviceMapService::GetMTPDeviceAsyncDelegate(
const std::string& filesystem_id) {
DCHECK(thread_checker_.CalledOnValidThread());
base::FilePath device_path;
if (!fileapi::IsolatedContext::GetInstance()->GetRegisteredPath(
filesystem_id, &device_path)) {
return NULL;
}
const base::FilePath::StringType& device_location = device_path.value();
DCHECK(!device_location.empty());
AsyncDelegateMap::const_iterator it =
async_delegate_map_.find(device_location);
return (it != async_delegate_map_.end()) ? it->second : NULL;
}
MTPDeviceMapService::MTPDeviceMapService() {
}
MTPDeviceMapService::~MTPDeviceMapService() {
}
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