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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 "webkit/fileapi/media/mtp_device_map_service.h"
#include <string>
#include <utility>
#include "base/stl_util.h"
#include "webkit/fileapi/isolated_context.h"
#include "webkit/fileapi/media/mtp_device_delegate.h"
namespace fileapi {
namespace {
base::LazyInstance<MTPDeviceMapService> g_mtp_device_map_service =
LAZY_INSTANCE_INITIALIZER;
} // namespace
// static
MTPDeviceMapService* MTPDeviceMapService::GetInstance() {
return g_mtp_device_map_service.Pointer();
}
void MTPDeviceMapService::AddDelegate(
const FilePath::StringType& device_location,
MTPDeviceDelegate* delegate) {
DCHECK(delegate);
DCHECK(!device_location.empty());
base::AutoLock lock(lock_);
if (ContainsKey(delegate_map_, device_location))
return;
delegate_map_[device_location] = delegate;
}
void MTPDeviceMapService::RemoveDelegate(
const FilePath::StringType& device_location) {
base::AutoLock lock(lock_);
DelegateMap::iterator it = delegate_map_.find(device_location);
DCHECK(it != delegate_map_.end());
it->second->CancelPendingTasksAndDeleteDelegate();
delegate_map_.erase(it);
}
MTPDeviceDelegate* MTPDeviceMapService::GetMTPDeviceDelegate(
const std::string& filesystem_id) {
FilePath device_path;
if (!IsolatedContext::GetInstance()->GetRegisteredPath(filesystem_id,
&device_path)) {
return NULL;
}
const FilePath::StringType& device_location = device_path.value();
DCHECK(!device_location.empty());
base::AutoLock lock(lock_);
DelegateMap::const_iterator it = delegate_map_.find(device_location);
DCHECK(it != delegate_map_.end());
return it->second;
}
MTPDeviceMapService::MTPDeviceMapService() {
}
MTPDeviceMapService::~MTPDeviceMapService() {}
} // namespace fileapi
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