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1 // Copyright 2012 The Chromium Authors. All rights reserved. | 1 // Copyright 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chrome/browser/search/search.h" | 5 #include "chrome/browser/search/search.h" |
6 | 6 |
7 #include "base/command_line.h" | 7 #include "base/command_line.h" |
8 #include "base/metrics/field_trial.h" | 8 #include "base/metrics/field_trial.h" |
9 #include "base/prefs/pref_service.h" | 9 #include "base/prefs/pref_service.h" |
10 #include "base/rand_util.h" | 10 #include "base/rand_util.h" |
kmadhusu
2014/01/09 23:31:43
This can be removed.
samarth
2014/01/10 05:13:32
Done.
| |
11 #include "base/strings/string_number_conversions.h" | 11 #include "base/strings/string_number_conversions.h" |
12 #include "base/strings/string_split.h" | 12 #include "base/strings/string_split.h" |
13 #include "base/strings/utf_string_conversions.h" | 13 #include "base/strings/utf_string_conversions.h" |
14 #include "chrome/browser/browser_process.h" | 14 #include "chrome/browser/browser_process.h" |
15 #include "chrome/browser/google/google_util.h" | 15 #include "chrome/browser/google/google_util.h" |
16 #include "chrome/browser/profiles/profile.h" | 16 #include "chrome/browser/profiles/profile.h" |
17 #include "chrome/browser/profiles/profile_manager.h" | 17 #include "chrome/browser/profiles/profile_manager.h" |
18 #include "chrome/browser/search/instant_service.h" | 18 #include "chrome/browser/search/instant_service.h" |
19 #include "chrome/browser/search/instant_service_factory.h" | 19 #include "chrome/browser/search/instant_service_factory.h" |
20 #include "chrome/browser/search_engines/template_url_service.h" | 20 #include "chrome/browser/search_engines/template_url_service.h" |
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52 // Field trial groups should be named things like "Group7 espv:2 instant:1". | 52 // Field trial groups should be named things like "Group7 espv:2 instant:1". |
53 // The first token is always GroupN for some integer N, followed by a | 53 // The first token is always GroupN for some integer N, followed by a |
54 // space-delimited list of key:value pairs which correspond to these flags: | 54 // space-delimited list of key:value pairs which correspond to these flags: |
55 const char kEmbeddedPageVersionFlagName[] = "espv"; | 55 const char kEmbeddedPageVersionFlagName[] = "espv"; |
56 #if defined(OS_IOS) || defined(OS_ANDROID) | 56 #if defined(OS_IOS) || defined(OS_ANDROID) |
57 const uint64 kEmbeddedPageVersionDefault = 1; | 57 const uint64 kEmbeddedPageVersionDefault = 1; |
58 #else | 58 #else |
59 const uint64 kEmbeddedPageVersionDefault = 2; | 59 const uint64 kEmbeddedPageVersionDefault = 2; |
60 #endif | 60 #endif |
61 | 61 |
62 // The staleness timeout can be set (in seconds) via this config. | |
63 const char kStalePageTimeoutFlagName[] = "stale"; | |
64 const int kStalePageTimeoutDefault = 3 * 3600; // 3 hours. | |
65 | |
66 const char kHideVerbatimFlagName[] = "hide_verbatim"; | 62 const char kHideVerbatimFlagName[] = "hide_verbatim"; |
67 const char kShowNtpFlagName[] = "show_ntp"; | |
68 const char kUseCacheableNTP[] = "use_cacheable_ntp"; | |
69 const char kPrefetchSearchResultsFlagName[] = "prefetch_results"; | 63 const char kPrefetchSearchResultsFlagName[] = "prefetch_results"; |
70 const char kPrefetchSearchResultsOnSRP[] = "prefetch_results_srp"; | 64 const char kPrefetchSearchResultsOnSRP[] = "prefetch_results_srp"; |
71 const char kDisplaySearchButtonFlagName[] = "display_search_button"; | 65 const char kDisplaySearchButtonFlagName[] = "display_search_button"; |
72 const char kEnableOriginChipFlagName[] = "origin_chip"; | 66 const char kEnableOriginChipFlagName[] = "origin_chip"; |
73 #if !defined(OS_IOS) && !defined(OS_ANDROID) | 67 #if !defined(OS_IOS) && !defined(OS_ANDROID) |
74 const char kEnableQueryExtractionFlagName[] = "query_extraction"; | 68 const char kEnableQueryExtractionFlagName[] = "query_extraction"; |
75 #endif | 69 #endif |
76 | 70 |
77 // Constants for the field trial name and group prefix. | 71 // Constants for the field trial name and group prefix. |
78 // Note in M30 and below this field trial was named "InstantExtended" and in | 72 // Note in M30 and below this field trial was named "InstantExtended" and in |
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388 if (!contents || !entry || !IsInstantExtendedAPIEnabled()) | 382 if (!contents || !entry || !IsInstantExtendedAPIEnabled()) |
389 return false; | 383 return false; |
390 | 384 |
391 Profile* profile = Profile::FromBrowserContext(contents->GetBrowserContext()); | 385 Profile* profile = Profile::FromBrowserContext(contents->GetBrowserContext()); |
392 if (!IsRenderedInInstantProcess(contents, profile)) | 386 if (!IsRenderedInInstantProcess(contents, profile)) |
393 return false; | 387 return false; |
394 | 388 |
395 if (entry->GetURL() == GetLocalInstantURL(profile)) | 389 if (entry->GetURL() == GetLocalInstantURL(profile)) |
396 return true; | 390 return true; |
397 | 391 |
398 if (ShouldUseCacheableNTP()) { | 392 GURL new_tab_url(GetNewTabPageURL(profile)); |
399 GURL new_tab_url(GetNewTabPageURL(profile)); | 393 return new_tab_url.is_valid() && |
400 return new_tab_url.is_valid() && | 394 search::MatchesOriginAndPath(entry->GetURL(), new_tab_url); |
401 search::MatchesOriginAndPath(entry->GetURL(), new_tab_url); | |
402 } | |
403 | |
404 return IsInstantURL(entry->GetVirtualURL(), profile) && | |
405 GetSearchTermsImpl(contents, entry).empty(); | |
406 } | 395 } |
407 | 396 |
408 bool IsSuggestPrefEnabled(Profile* profile) { | 397 bool IsSuggestPrefEnabled(Profile* profile) { |
409 return profile && !profile->IsOffTheRecord() && profile->GetPrefs() && | 398 return profile && !profile->IsOffTheRecord() && profile->GetPrefs() && |
410 profile->GetPrefs()->GetBoolean(prefs::kSearchSuggestEnabled); | 399 profile->GetPrefs()->GetBoolean(prefs::kSearchSuggestEnabled); |
411 } | 400 } |
412 | 401 |
413 GURL GetInstantURL(Profile* profile, int start_margin, | 402 GURL GetInstantURL(Profile* profile, int start_margin, |
414 bool force_instant_results) { | 403 bool force_instant_results) { |
415 if (!IsInstantExtendedAPIEnabled() || !IsSuggestPrefEnabled(profile)) | 404 if (!IsInstantExtendedAPIEnabled() || !IsSuggestPrefEnabled(profile)) |
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451 return result; | 440 return result; |
452 for (size_t i = 0; i < template_url->URLCount(); ++i) { | 441 for (size_t i = 0; i < template_url->URLCount(); ++i) { |
453 TemplateURLRef ref(template_url, i); | 442 TemplateURLRef ref(template_url, i); |
454 result.push_back(TemplateURLRefToGURL(ref, kDisableStartMargin, false, | 443 result.push_back(TemplateURLRefToGURL(ref, kDisableStartMargin, false, |
455 false)); | 444 false)); |
456 } | 445 } |
457 return result; | 446 return result; |
458 } | 447 } |
459 | 448 |
460 GURL GetNewTabPageURL(Profile* profile) { | 449 GURL GetNewTabPageURL(Profile* profile) { |
461 if (!ShouldUseCacheableNTP()) | |
462 return GURL(); | |
463 | |
464 if (!profile || profile->IsOffTheRecord()) | 450 if (!profile || profile->IsOffTheRecord()) |
465 return GURL(); | 451 return GURL(); |
466 | 452 |
467 if (!IsSuggestPrefEnabled(profile)) | 453 if (!IsSuggestPrefEnabled(profile)) |
468 return GURL(chrome::kChromeSearchLocalNtpUrl); | 454 return GURL(chrome::kChromeSearchLocalNtpUrl); |
469 | 455 |
470 TemplateURL* template_url = GetDefaultSearchProviderTemplateURL(profile); | 456 TemplateURL* template_url = GetDefaultSearchProviderTemplateURL(profile); |
471 if (!template_url) | 457 if (!template_url) |
472 return GURL(chrome::kChromeSearchLocalNtpUrl); | 458 return GURL(chrome::kChromeSearchLocalNtpUrl); |
473 | 459 |
474 GURL url(TemplateURLRefToGURL(template_url->new_tab_url_ref(), | 460 GURL url(TemplateURLRefToGURL(template_url->new_tab_url_ref(), |
475 kDisableStartMargin, false, false)); | 461 kDisableStartMargin, false, false)); |
476 if (!url.is_valid() || !url.SchemeIsSecure()) | 462 if (!url.is_valid() || !url.SchemeIsSecure()) |
477 return GURL(chrome::kChromeSearchLocalNtpUrl); | 463 return GURL(chrome::kChromeSearchLocalNtpUrl); |
478 | 464 |
479 if (!IsURLAllowedForSupervisedUser(url, profile)) | 465 if (!IsURLAllowedForSupervisedUser(url, profile)) |
480 return GURL(chrome::kChromeSearchLocalNtpUrl); | 466 return GURL(chrome::kChromeSearchLocalNtpUrl); |
481 | 467 |
482 return url; | 468 return url; |
483 } | 469 } |
484 | 470 |
485 GURL GetSearchResultPrefetchBaseURL(Profile* profile) { | 471 GURL GetSearchResultPrefetchBaseURL(Profile* profile) { |
486 return ShouldPrefetchSearchResults() ? | 472 return ShouldPrefetchSearchResults() ? |
487 GetInstantURL(profile, kDisableStartMargin, true) : GURL(); | 473 GetInstantURL(profile, kDisableStartMargin, true) : GURL(); |
488 } | 474 } |
489 | 475 |
490 bool ShouldPrefetchSearchResults() { | 476 bool ShouldPrefetchSearchResults() { |
491 if (!ShouldUseCacheableNTP()) | |
492 return false; | |
493 | |
494 FieldTrialFlags flags; | 477 FieldTrialFlags flags; |
495 return GetFieldTrialInfo(&flags) && GetBoolValueForFlagWithDefault( | 478 return GetFieldTrialInfo(&flags) && GetBoolValueForFlagWithDefault( |
496 kPrefetchSearchResultsFlagName, false, flags); | 479 kPrefetchSearchResultsFlagName, false, flags); |
497 } | 480 } |
498 | 481 |
499 GURL GetLocalInstantURL(Profile* profile) { | 482 GURL GetLocalInstantURL(Profile* profile) { |
500 return GURL(chrome::kChromeSearchLocalNtpUrl); | 483 return GURL(chrome::kChromeSearchLocalNtpUrl); |
501 } | 484 } |
502 | 485 |
503 bool ShouldHideTopVerbatimMatch() { | 486 bool ShouldHideTopVerbatimMatch() { |
504 FieldTrialFlags flags; | 487 FieldTrialFlags flags; |
505 return GetFieldTrialInfo(&flags) && GetBoolValueForFlagWithDefault( | 488 return GetFieldTrialInfo(&flags) && GetBoolValueForFlagWithDefault( |
506 kHideVerbatimFlagName, false, flags); | 489 kHideVerbatimFlagName, false, flags); |
507 } | 490 } |
508 | 491 |
509 bool ShouldUseCacheableNTP() { | |
510 FieldTrialFlags flags; | |
511 return !GetFieldTrialInfo(&flags) || GetBoolValueForFlagWithDefault( | |
512 kUseCacheableNTP, true, flags); | |
513 } | |
514 | |
515 bool ShouldShowInstantNTP() { | |
516 // If using the cacheable NTP, load the NTP directly instead of preloading its | |
517 // contents using InstantNTP. | |
518 if (ShouldUseCacheableNTP()) | |
519 return false; | |
520 | |
521 FieldTrialFlags flags; | |
522 return !GetFieldTrialInfo(&flags) || | |
523 GetBoolValueForFlagWithDefault(kShowNtpFlagName, true, flags); | |
524 } | |
525 | |
526 DisplaySearchButtonConditions GetDisplaySearchButtonConditions() { | 492 DisplaySearchButtonConditions GetDisplaySearchButtonConditions() { |
527 const CommandLine* cl = CommandLine::ForCurrentProcess(); | 493 const CommandLine* cl = CommandLine::ForCurrentProcess(); |
528 if (cl->HasSwitch(switches::kDisableSearchButtonInOmnibox)) { | 494 if (cl->HasSwitch(switches::kDisableSearchButtonInOmnibox)) { |
529 return DISPLAY_SEARCH_BUTTON_NEVER; | 495 return DISPLAY_SEARCH_BUTTON_NEVER; |
530 } else if (cl->HasSwitch(switches::kEnableSearchButtonInOmniboxForStr)) { | 496 } else if (cl->HasSwitch(switches::kEnableSearchButtonInOmniboxForStr)) { |
531 return DISPLAY_SEARCH_BUTTON_FOR_STR; | 497 return DISPLAY_SEARCH_BUTTON_FOR_STR; |
532 } else if (cl->HasSwitch(switches::kEnableSearchButtonInOmniboxForStrOrIip)) { | 498 } else if (cl->HasSwitch(switches::kEnableSearchButtonInOmniboxForStrOrIip)) { |
533 return DISPLAY_SEARCH_BUTTON_FOR_STR_OR_IIP; | 499 return DISPLAY_SEARCH_BUTTON_FOR_STR_OR_IIP; |
534 } else if (cl->HasSwitch(switches::kEnableSearchButtonInOmniboxAlways)) { | 500 } else if (cl->HasSwitch(switches::kEnableSearchButtonInOmniboxAlways)) { |
535 return DISPLAY_SEARCH_BUTTON_ALWAYS; | 501 return DISPLAY_SEARCH_BUTTON_ALWAYS; |
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584 search::MatchesOriginAndPath(url, instant_url)) { | 550 search::MatchesOriginAndPath(url, instant_url)) { |
585 replacements.SetHost(online_ntp_host.c_str(), | 551 replacements.SetHost(online_ntp_host.c_str(), |
586 url_parse::Component(0, online_ntp_host.length())); | 552 url_parse::Component(0, online_ntp_host.length())); |
587 } | 553 } |
588 } | 554 } |
589 | 555 |
590 effective_url = effective_url.ReplaceComponents(replacements); | 556 effective_url = effective_url.ReplaceComponents(replacements); |
591 return effective_url; | 557 return effective_url; |
592 } | 558 } |
593 | 559 |
594 int GetInstantLoaderStalenessTimeoutSec() { | |
595 int timeout_sec = kStalePageTimeoutDefault; | |
596 FieldTrialFlags flags; | |
597 if (GetFieldTrialInfo(&flags)) { | |
598 timeout_sec = GetUInt64ValueForFlagWithDefault(kStalePageTimeoutFlagName, | |
599 kStalePageTimeoutDefault, | |
600 flags); | |
601 } | |
602 | |
603 // Require a minimum 5 minute timeout. | |
604 if (timeout_sec < 0 || (timeout_sec > 0 && timeout_sec < 300)) | |
605 timeout_sec = kStalePageTimeoutDefault; | |
606 | |
607 // Randomize by upto 15% either side. | |
608 timeout_sec = base::RandInt(timeout_sec * 0.85, timeout_sec * 1.15); | |
609 | |
610 return timeout_sec; | |
611 } | |
612 | |
613 bool IsPreloadedInstantExtendedNTP(const content::WebContents* contents) { | |
614 if (!IsInstantExtendedAPIEnabled()) | |
615 return false; | |
616 | |
617 ProfileManager* profile_manager = g_browser_process->profile_manager(); | |
618 if (!profile_manager) | |
619 return false; // The profile manager can be NULL while testing. | |
620 | |
621 const std::vector<Profile*>& profiles = profile_manager->GetLoadedProfiles(); | |
622 for (size_t i = 0; i < profiles.size(); ++i) { | |
623 const InstantService* instant_service = | |
624 InstantServiceFactory::GetForProfile(profiles[i]); | |
625 if (instant_service && instant_service->GetNTPContents() == contents) | |
626 return true; | |
627 } | |
628 return false; | |
629 } | |
630 | |
631 bool HandleNewTabURLRewrite(GURL* url, | 560 bool HandleNewTabURLRewrite(GURL* url, |
632 content::BrowserContext* browser_context) { | 561 content::BrowserContext* browser_context) { |
633 if (!IsInstantExtendedAPIEnabled()) | 562 if (!IsInstantExtendedAPIEnabled()) |
634 return false; | 563 return false; |
635 | 564 |
636 if (!url->SchemeIs(chrome::kChromeUIScheme) || | 565 if (!url->SchemeIs(chrome::kChromeUIScheme) || |
637 url->host() != chrome::kChromeUINewTabHost) | 566 url->host() != chrome::kChromeUINewTabHost) |
638 return false; | 567 return false; |
639 | 568 |
640 Profile* profile = Profile::FromBrowserContext(browser_context); | 569 Profile* profile = Profile::FromBrowserContext(browser_context); |
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747 | 676 |
748 // Given a FieldTrialFlags object, returns the boolean value of the provided | 677 // Given a FieldTrialFlags object, returns the boolean value of the provided |
749 // flag. | 678 // flag. |
750 bool GetBoolValueForFlagWithDefault(const std::string& flag, | 679 bool GetBoolValueForFlagWithDefault(const std::string& flag, |
751 bool default_value, | 680 bool default_value, |
752 const FieldTrialFlags& flags) { | 681 const FieldTrialFlags& flags) { |
753 return !!GetUInt64ValueForFlagWithDefault(flag, default_value ? 1 : 0, flags); | 682 return !!GetUInt64ValueForFlagWithDefault(flag, default_value ? 1 : 0, flags); |
754 } | 683 } |
755 | 684 |
756 } // namespace chrome | 685 } // namespace chrome |
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