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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
// Copyright 2019 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_OPTIMIZATION_GUIDE_OPTIMIZATION_GUIDE_WEB_CONTENTS_OBSERVER_H_
#define CHROME_BROWSER_OPTIMIZATION_GUIDE_OPTIMIZATION_GUIDE_WEB_CONTENTS_OBSERVER_H_
#include <string>
#include <vector>
#include "base/containers/flat_map.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/optimization_guide/optimization_guide_navigation_data.h"
#include "components/page_load_metrics/common/page_load_metrics.mojom-forward.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
namespace content {
class NavigationHandle;
} // namespace content
class OptimizationGuideKeyedService;
// Observes navigation events.
class OptimizationGuideWebContentsObserver
: public content::WebContentsObserver,
public content::WebContentsUserData<
OptimizationGuideWebContentsObserver> {
public:
~OptimizationGuideWebContentsObserver() override;
// Gets the OptimizationGuideNavigationData associated with
// |navigation_handle|. If one does not exist already, one will be created for
// it.
OptimizationGuideNavigationData* GetOrCreateOptimizationGuideNavigationData(
content::NavigationHandle* navigation_handle);
// Captures the timing information at the time of FCP for the current
// navigation to be used by the Optimization Guide to make decisions. Other
// timing metric information may be missing (e.g., LCP, FMP).
void UpdateSessionTimingStatistics(
const page_load_metrics::mojom::PageLoadTiming& timing);
// Notifies |this| to flush |last_navigation_data| so metrics are recorded.
void FlushLastNavigationData();
private:
friend class content::WebContentsUserData<
OptimizationGuideWebContentsObserver>;
explicit OptimizationGuideWebContentsObserver(
content::WebContents* web_contents);
// content::WebContentsObserver implementation:
void DidStartNavigation(
content::NavigationHandle* navigation_handle) override;
void DidRedirectNavigation(
content::NavigationHandle* navigation_handle) override;
void DidFinishNavigation(
content::NavigationHandle* navigation_handle) override;
// Notifies |optimization_guide_keyed_service_| that the navigation has
// finished.
void NotifyNavigationFinish(
int64_t navigation_id,
const std::vector<GURL>& navigation_redirect_chain);
// The data related to a given navigation ID.
base::flat_map<int64_t, std::unique_ptr<OptimizationGuideNavigationData>>
inflight_optimization_guide_navigation_datas_;
// The navigation data for the last completed navigation.
std::unique_ptr<OptimizationGuideNavigationData> last_navigation_data_;
// Initialized in constructor. It may be null if the
// OptimizationGuideKeyedService feature is not enabled.
OptimizationGuideKeyedService* optimization_guide_keyed_service_ = nullptr;
base::WeakPtrFactory<OptimizationGuideWebContentsObserver> weak_factory_{
this};
WEB_CONTENTS_USER_DATA_KEY_DECL();
DISALLOW_COPY_AND_ASSIGN(OptimizationGuideWebContentsObserver);
};
#endif // CHROME_BROWSER_OPTIMIZATION_GUIDE_OPTIMIZATION_GUIDE_WEB_CONTENTS_OBSERVER_H_
|
