chrome/browser/android/offline_pages/prerender_adapter.cc - Issue 2011913002: Revert of PrerenderingLoader initial integration with PrerenderManager/PrerenderHandle

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Issue 2011913002: Revert of PrerenderingLoader initial integration with PrerenderManager/PrerenderHandle (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Created 4 years, 7 months ago

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1 // Copyright 2016 The Chromium Authors. All rights reserved.

2 // Use of this source code is governed by a BSD-style license that can be

3 // found in the LICENSE file.

4

5 #include "chrome/browser/android/offline_pages/prerender_adapter.h"

6

7 #include "chrome/browser/prerender/prerender_manager.h"

8 #include "chrome/browser/prerender/prerender_manager_factory.h"

9 #include "chrome/browser/profiles/profile.h"

10 #include "content/public/browser/browser_context.h"

11 #include "content/public/browser/web_contents.h"

12 #include "ui/gfx/geometry/size.h"

13

14 namespace offline_pages {

15

16 PrerenderAdapter::Observer::Observer() {}

17 PrerenderAdapter::Observer::~Observer() {}

18

19 PrerenderAdapter::PrerenderAdapter(PrerenderAdapter::Observer* observer)

20 : observer_(observer) {

21 DCHECK(observer);

22 }

23

24 PrerenderAdapter::~PrerenderAdapter() {

25 if (IsActive())

26 DestroyActive();

27 }

28

29 bool PrerenderAdapter::CanPrerender() const {

30 return prerender::PrerenderManager::ActuallyPrerendering();

31 }

32

33 bool PrerenderAdapter::StartPrerender(

34 content::BrowserContext* browser_context,

35 const GURL& url,

36 content::SessionStorageNamespace* session_storage_namespace,

37 const gfx::Size& size) {

38 DCHECK(!IsActive());

39 DCHECK(CanPrerender());

40

41 Profile* profile = Profile::FromBrowserContext(browser_context);

42 prerender::PrerenderManager* manager =

43 prerender::PrerenderManagerFactory::GetForProfile(profile);

44 DCHECK(manager);

45

46 // Start prerendering the url and capture the handle for the prerendering.

47 active_handle_.reset(

48 manager->AddPrerenderForOffline(url, session_storage_namespace, size));

49 if (!active_handle_)

50 return false;

51

52 active_handle_->SetObserver(this);

53 return true;

54 }

55

56 content::WebContents* PrerenderAdapter::GetWebContents() const {

57 DCHECK(IsActive());

58 DCHECK(active_handle_->contents());

59 // Note: the prerender stack maintains ownership of these contents

60 // and PrerenderingLoader::StopLoading() must be called to report

61 // the Loader is done with the contents.

62 return active_handle_->contents()->prerender_contents();

63 }

64

65 prerender::FinalStatus PrerenderAdapter::GetFinalStatus() const {

66 DCHECK(IsActive());

67 DCHECK(active_handle_->contents());

68 return active_handle_->contents()->final_status();

69 }

70

71 bool PrerenderAdapter::IsActive() const {

72 return active_handle_.get();

73 }

74

75 void PrerenderAdapter::DestroyActive() {

76 DCHECK(IsActive());

77 active_handle_->OnCancel();

78 active_handle_.reset(nullptr);

79 }

80

81 void PrerenderAdapter::OnPrerenderStart(prerender::PrerenderHandle* handle) {

82 DCHECK(active_handle_.get() == handle);

83 observer_->OnPrerenderStart();

84 }

85

86 void PrerenderAdapter::OnPrerenderStopLoading(

87 prerender::PrerenderHandle* handle) {

88 DCHECK(active_handle_.get() == handle);

89 observer_->OnPrerenderDomContentLoaded();

90 }

91

92 void PrerenderAdapter::OnPrerenderDomContentLoaded(

93 prerender::PrerenderHandle* handle) {

94 DCHECK(active_handle_.get() == handle);

95 observer_->OnPrerenderDomContentLoaded();

96 }

97

98 void PrerenderAdapter::OnPrerenderStop(prerender::PrerenderHandle* handle) {

99 DCHECK(active_handle_.get() == handle);

100 observer_->OnPrerenderStop();

101 }

102

103 } // namespace offline_pages

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