1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_OFFLINE_PAGES_CORE_BACKGROUND_OFFLINER_CLIENT_H_
#define COMPONENTS_OFFLINE_PAGES_CORE_BACKGROUND_OFFLINER_CLIENT_H_
#include <memory>
#include "base/functional/callback.h"
#include "base/timer/timer.h"
#include "components/offline_pages/core/background/offliner.h"
namespace offline_pages {
class SavePageRequest;
// Provides an interface to the Offliner and implements a timeout.
class OfflinerClient {
public:
typedef base::OnceCallback<void(const SavePageRequest&,
Offliner::RequestStatus)>
CompleteCallback;
OfflinerClient(std::unique_ptr<Offliner> offliner,
const Offliner::ProgressCallback& progress_callback);
~OfflinerClient();
bool Ready() const { return !active_request_; }
bool Active() const { return active_request_ != nullptr; }
// Returns the active request, or null if not active.
const SavePageRequest* ActiveRequest() const { return active_request_.get(); }
// Begins offlining the request. Calls complete_callback when successfully
// complete, or when the request is cancelled due to Stop(), or running out of
// time. If |LoadAndSave| returns false, the operation failed to start, and
// |complete_callback| will not be called.
bool LoadAndSave(const SavePageRequest& request,
base::TimeDelta timeout,
CompleteCallback complete_callback);
void Stop(Offliner::RequestStatus status);
public:
void HandleWatchdogTimeout();
void CancelComplete(Offliner::RequestStatus cancel_reason,
const SavePageRequest& request);
void OfflinerComplete(const SavePageRequest& request,
Offliner::RequestStatus status);
void Finish(Offliner::RequestStatus status);
std::unique_ptr<SavePageRequest> active_request_;
// Whether awaiting the result of |Offliner::Cancel|.
bool stopping_ = false;
CompleteCallback complete_callback_;
std::unique_ptr<Offliner> offliner_;
const Offliner::ProgressCallback progress_callback_;
// Timer to watch for pre-render attempts running too long.
base::OneShotTimer watchdog_timer_;
};
} // namespace offline_pages
#endif // COMPONENTS_OFFLINE_PAGES_CORE_BACKGROUND_OFFLINER_CLIENT_H_
|
