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// Copyright 2015 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.
#ifndef CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_JOB_EVENT_ROUTER_H_
#define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_JOB_EVENT_ROUTER_H_
#include <map>
#include <string>
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/threading/thread_checker.h"
#include "base/time/time.h"
#include "base/values.h"
#include "chrome/browser/chromeos/drive/job_list.h"
#include "chrome/common/extensions/api/file_manager_private.h"
#include "extensions/browser/extension_event_histogram_value.h"
#include "url/gurl.h"
namespace file_manager {
// Files.app's event router handling job related events.
class JobEventRouter : public drive::JobListObserver {
public:
explicit JobEventRouter(const base::TimeDelta& event_delay);
~JobEventRouter() override;
// drive::JobListObserver overrides.
void OnJobAdded(const drive::JobInfo& job_info) override;
void OnJobUpdated(const drive::JobInfo& job_info) override;
void OnJobDone(const drive::JobInfo& job_info,
drive::FileError error) override;
protected:
// Helper method to convert drive path to file system URL.
virtual GURL ConvertDrivePathToFileSystemUrl(const base::FilePath& path,
const std::string& id) const = 0;
// Helper method to dispatch events.
virtual void BroadcastEvent(
extensions::events::HistogramValue histogram_value,
const std::string& event_name,
scoped_ptr<base::ListValue> event_args) = 0;
private:
// Request sending transfer event with |job_info| and |state|.
// If |immediate| is true, the event will be dispatched synchronously.
// Otherwise, the event is throttled, or may be skipped.
void ScheduleDriveFileTransferEvent(
const drive::JobInfo& job_info,
extensions::api::file_manager_private::TransferState state,
bool immediate);
// Send transfer event requested by ScheduleDriveFileTransferEvent at last.
void SendDriveFileTransferEvent();
// Update |num_completed_bytes_| and |num_total_bytes_| depends on |job|.
void UpdateBytes(const drive::JobInfo& job_info);
// Delay time before sending progress events.
base::TimeDelta event_delay_;
// Set of job that are in the job schedular.
std::map<drive::JobID, linked_ptr<drive::JobInfo>> drive_jobs_;
// Pending transfer event. |ScheduleDriveFileTransferEvent| registers timeout
// callback to dispatch this.
scoped_ptr<extensions::api::file_manager_private::FileTransferStatus>
pending_event_;
// Computed bytes of tasks that have been processed. Once it completes all
// tasks, it clears the variable.
int64 num_completed_bytes_;
// Total bytes of tasks that have been processed. Once it completes all tasks,
// it clears the variable.
int64 num_total_bytes_;
// Thread checker.
base::ThreadChecker thread_checker_;
// Note: This should remain the last member so it'll be destroyed and
// invalidate the weak pointers before any other members are destroyed.
base::WeakPtrFactory<JobEventRouter> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(JobEventRouter);
};
} // namespace file_manager
#endif // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_JOB_EVENT_ROUTER_H_
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