src/chrome/browser/extensions/api/web_navigation/web_navigation_api.cc

   1 // Copyright (c) 2012 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 // Implements the Chrome Extensions WebNavigation API.
   6
   7 #include "chrome/browser/extensions/api/web_navigation/web_navigation_api.h"
   8
   9 #include "base/lazy_instance.h"
  10 #include "chrome/browser/chrome_notification_types.h"
  11 #include "chrome/browser/extensions/api/web_navigation/web_navigation_api_constants.h"
  12 #include "chrome/browser/extensions/api/web_navigation/web_navigation_api_helpers.h"
  13 #include "chrome/browser/extensions/extension_tab_util.h"
  14 #include "chrome/browser/profiles/profile.h"
  15 #include "chrome/browser/tab_contents/retargeting_details.h"
  16 #include "chrome/browser/ui/browser.h"
  17 #include "chrome/browser/ui/browser_iterator.h"
  18 #include "chrome/browser/ui/browser_list.h"
  19 #include "chrome/common/extensions/api/web_navigation.h"
  20 #include "content/public/browser/navigation_details.h"
  21 #include "content/public/browser/notification_service.h"
  22 #include "content/public/browser/notification_types.h"
  23 #include "content/public/browser/render_process_host.h"
  24 #include "content/public/browser/render_view_host.h"
  25 #include "content/public/browser/resource_request_details.h"
  26 #include "content/public/browser/web_contents.h"
  27 #include "content/public/common/url_constants.h"
  28 #include "extensions/browser/event_router.h"
  29 #include "extensions/browser/view_type_utils.h"
  30 #include "net/base/net_errors.h"
  31
  32 namespace GetFrame = extensions::api::web_navigation::GetFrame;
  33 namespace GetAllFrames = extensions::api::web_navigation::GetAllFrames;
  34
  35 DEFINE_WEB_CONTENTS_USER_DATA_KEY(extensions::WebNavigationTabObserver);
  36
  37 namespace extensions {
  38
  39 #if !defined(OS_ANDROID)
  40
  41 namespace helpers = web_navigation_api_helpers;
  42 namespace keys = web_navigation_api_constants;
  43 namespace web_navigation = api::web_navigation;
  44
  45 namespace {
  46
  47 typedef std::map<content::WebContents*, WebNavigationTabObserver*>
  48     TabObserverMap;
  49 static base::LazyInstance<TabObserverMap> g_tab_observer =
  50     LAZY_INSTANCE_INITIALIZER;
  51
  52 }  // namespace
  53
  54 // WebNavigtionEventRouter -------------------------------------------
  55
  56 WebNavigationEventRouter::PendingWebContents::PendingWebContents()
  57     : source_web_contents(NULL),
  58       source_frame_id(0),
  59       source_frame_is_main_frame(false),
  60       target_web_contents(NULL),
  61       target_url() {
  62 }
  63
  64 WebNavigationEventRouter::PendingWebContents::PendingWebContents(
  65     content::WebContents* source_web_contents,
  66     int64 source_frame_id,
  67     bool source_frame_is_main_frame,
  68     content::WebContents* target_web_contents,
  69     const GURL& target_url)
  70     : source_web_contents(source_web_contents),
  71       source_frame_id(source_frame_id),
  72       source_frame_is_main_frame(source_frame_is_main_frame),
  73       target_web_contents(target_web_contents),
  74       target_url(target_url) {
  75 }
  76
  77 WebNavigationEventRouter::PendingWebContents::~PendingWebContents() {}
  78
  79 WebNavigationEventRouter::WebNavigationEventRouter(Profile* profile)
  80     : profile_(profile) {
  81   CHECK(registrar_.IsEmpty());
  82   registrar_.Add(this,
  83                  chrome::NOTIFICATION_RETARGETING,
  84                  content::NotificationService::AllSources());
  85   registrar_.Add(this,
  86                  chrome::NOTIFICATION_TAB_ADDED,
  87                  content::NotificationService::AllSources());
  88   registrar_.Add(this,
  89                  content::NOTIFICATION_WEB_CONTENTS_DESTROYED,
  90                  content::NotificationService::AllSources());
  91
  92   BrowserList::AddObserver(this);
  93   for (chrome::BrowserIterator it; !it.done(); it.Next())
  94     OnBrowserAdded(*it);
  95 }
  96
  97 WebNavigationEventRouter::~WebNavigationEventRouter() {
  98   for (chrome::BrowserIterator it; !it.done(); it.Next())
  99     OnBrowserRemoved(*it);
 100   BrowserList::RemoveObserver(this);
 101 }
 102
 103 void WebNavigationEventRouter::OnBrowserAdded(Browser* browser) {
 104   if (!profile_->IsSameProfile(browser->profile()))
 105     return;
 106   browser->tab_strip_model()->AddObserver(this);
 107 }
 108
 109 void WebNavigationEventRouter::OnBrowserRemoved(Browser* browser) {
 110   if (!profile_->IsSameProfile(browser->profile()))
 111     return;
 112   browser->tab_strip_model()->RemoveObserver(this);
 113 }
 114
 115 void WebNavigationEventRouter::TabReplacedAt(
 116     TabStripModel* tab_strip_model,
 117     content::WebContents* old_contents,
 118     content::WebContents* new_contents,
 119     int index) {
 120   WebNavigationTabObserver* tab_observer =
 121       WebNavigationTabObserver::Get(old_contents);
 122   if (!tab_observer) {
 123     // If you hit this DCHECK(), please add reproduction steps to
 124     // http://crbug.com/109464.
 125     DCHECK(GetViewType(old_contents) != VIEW_TYPE_TAB_CONTENTS);
 126     return;
 127   }
 128   const FrameNavigationState& frame_navigation_state =
 129       tab_observer->frame_navigation_state();
 130
 131   if (!frame_navigation_state.IsValidUrl(old_contents->GetURL()) ||
 132       !frame_navigation_state.IsValidUrl(new_contents->GetURL()))
 133     return;
 134
 135   helpers::DispatchOnTabReplaced(old_contents, profile_, new_contents);
 136 }
 137
 138 void WebNavigationEventRouter::Observe(
 139     int type,
 140     const content::NotificationSource& source,
 141     const content::NotificationDetails& details) {
 142   switch (type) {
 143     case chrome::NOTIFICATION_RETARGETING: {
 144       Profile* profile = content::Source<Profile>(source).ptr();
 145       if (profile->GetOriginalProfile() == profile_) {
 146         Retargeting(
 147             content::Details<const RetargetingDetails>(details).ptr());
 148       }
 149       break;
 150     }
 151
 152     case chrome::NOTIFICATION_TAB_ADDED:
 153       TabAdded(content::Details<content::WebContents>(details).ptr());
 154       break;
 155
 156     case content::NOTIFICATION_WEB_CONTENTS_DESTROYED:
 157       TabDestroyed(content::Source<content::WebContents>(source).ptr());
 158       break;
 159
 160     default:
 161       NOTREACHED();
 162   }
 163 }
 164
 165 void WebNavigationEventRouter::Retargeting(const RetargetingDetails* details) {
 166   if (details->source_render_frame_id == 0)
 167     return;
 168   WebNavigationTabObserver* tab_observer =
 169       WebNavigationTabObserver::Get(details->source_web_contents);
 170   if (!tab_observer) {
 171     // If you hit this DCHECK(), please add reproduction steps to
 172     // http://crbug.com/109464.
 173     DCHECK(GetViewType(details->source_web_contents) != VIEW_TYPE_TAB_CONTENTS);
 174     return;
 175   }
 176   const FrameNavigationState& frame_navigation_state =
 177       tab_observer->frame_navigation_state();
 178
 179   FrameNavigationState::FrameID frame_id(
 180       details->source_render_frame_id,
 181       details->source_web_contents->GetRenderViewHost());
 182   if (!frame_navigation_state.CanSendEvents(frame_id))
 183     return;
 184
 185   // If the WebContents isn't yet inserted into a tab strip, we need to delay
 186   // the extension event until the WebContents is fully initialized.
 187   if (details->not_yet_in_tabstrip) {
 188     pending_web_contents_[details->target_web_contents] =
 189         PendingWebContents(
 190             details->source_web_contents,
 191             details->source_render_frame_id,
 192             frame_navigation_state.IsMainFrame(frame_id),
 193             details->target_web_contents,
 194             details->target_url);
 195   } else {
 196     helpers::DispatchOnCreatedNavigationTarget(
 197         details->source_web_contents,
 198         details->target_web_contents->GetBrowserContext(),
 199         details->source_render_frame_id,
 200         frame_navigation_state.IsMainFrame(frame_id),
 201         details->target_web_contents,
 202         details->target_url);
 203   }
 204 }
 205
 206 void WebNavigationEventRouter::TabAdded(content::WebContents* tab) {
 207   std::map<content::WebContents*, PendingWebContents>::iterator iter =
 208       pending_web_contents_.find(tab);
 209   if (iter == pending_web_contents_.end())
 210     return;
 211
 212   WebNavigationTabObserver* tab_observer =
 213       WebNavigationTabObserver::Get(iter->second.source_web_contents);
 214   if (!tab_observer) {
 215     NOTREACHED();
 216     return;
 217   }
 218   const FrameNavigationState& frame_navigation_state =
 219       tab_observer->frame_navigation_state();
 220
 221   FrameNavigationState::FrameID frame_id(
 222       iter->second.source_frame_id,
 223       iter->second.source_web_contents->GetRenderViewHost());
 224   if (frame_navigation_state.CanSendEvents(frame_id)) {
 225     helpers::DispatchOnCreatedNavigationTarget(
 226         iter->second.source_web_contents,
 227         iter->second.target_web_contents->GetBrowserContext(),
 228         iter->second.source_frame_id,
 229         iter->second.source_frame_is_main_frame,
 230         iter->second.target_web_contents,
 231         iter->second.target_url);
 232   }
 233   pending_web_contents_.erase(iter);
 234 }
 235
 236 void WebNavigationEventRouter::TabDestroyed(content::WebContents* tab) {
 237   pending_web_contents_.erase(tab);
 238   for (std::map<content::WebContents*, PendingWebContents>::iterator i =
 239            pending_web_contents_.begin(); i != pending_web_contents_.end(); ) {
 240     if (i->second.source_web_contents == tab)
 241       pending_web_contents_.erase(i++);
 242     else
 243       ++i;
 244   }
 245 }
 246
 247 // WebNavigationTabObserver ------------------------------------------
 248
 249 WebNavigationTabObserver::WebNavigationTabObserver(
 250     content::WebContents* web_contents)
 251     : WebContentsObserver(web_contents),
 252       render_view_host_(NULL),
 253       pending_render_view_host_(NULL) {
 254   g_tab_observer.Get().insert(TabObserverMap::value_type(web_contents, this));
 255   registrar_.Add(this,
 256                  content::NOTIFICATION_RENDER_VIEW_HOST_WILL_CLOSE_RENDER_VIEW,
 257                  content::NotificationService::AllSources());
 258 }
 259
 260 WebNavigationTabObserver::~WebNavigationTabObserver() {}
 261
 262 // static
 263 WebNavigationTabObserver* WebNavigationTabObserver::Get(
 264     content::WebContents* web_contents) {
 265   TabObserverMap::iterator i = g_tab_observer.Get().find(web_contents);
 266   return i == g_tab_observer.Get().end() ? NULL : i->second;
 267 }
 268
 269 content::RenderViewHost* WebNavigationTabObserver::GetRenderViewHostInProcess(
 270     int process_id) const {
 271   if (render_view_host_ &&
 272       render_view_host_->GetProcess()->GetID() == process_id) {
 273     return render_view_host_;
 274   }
 275   if (pending_render_view_host_ &&
 276       pending_render_view_host_->GetProcess()->GetID() == process_id) {
 277     return pending_render_view_host_;
 278   }
 279   return NULL;
 280 }
 281
 282 void WebNavigationTabObserver::Observe(
 283     int type,
 284     const content::NotificationSource& source,
 285     const content::NotificationDetails& details) {
 286   switch (type) {
 287     case content::NOTIFICATION_RENDER_VIEW_HOST_WILL_CLOSE_RENDER_VIEW: {
 288       // The RenderView is technically not yet deleted, but the RenderViewHost
 289       // already starts to filter out some IPCs. In order to not get confused,
 290       // we consider the RenderView dead already now.
 291       RenderViewDeleted(content::Source<content::RenderViewHost>(source).ptr());
 292       break;
 293     }
 294
 295     default:
 296       NOTREACHED();
 297   }
 298 }
 299
 300 void WebNavigationTabObserver::RenderViewDeleted(
 301     content::RenderViewHost* render_view_host) {
 302   if (render_view_host == render_view_host_) {
 303     render_view_host_ = NULL;
 304     if (pending_render_view_host_) {
 305       render_view_host_ = pending_render_view_host_;
 306       pending_render_view_host_ = NULL;
 307     }
 308   } else if (render_view_host == pending_render_view_host_) {
 309     pending_render_view_host_ = NULL;
 310   } else {
 311     return;
 312   }
 313   SendErrorEvents(
 314       web_contents(), render_view_host, FrameNavigationState::FrameID());
 315 }
 316
 317 void WebNavigationTabObserver::AboutToNavigateRenderView(
 318     content::RenderViewHost* render_view_host) {
 319   if (!render_view_host_) {
 320     render_view_host_ = render_view_host;
 321   } else if (render_view_host != render_view_host_) {
 322     if (pending_render_view_host_) {
 323       SendErrorEvents(web_contents(),
 324                       pending_render_view_host_,
 325                       FrameNavigationState::FrameID());
 326     }
 327     pending_render_view_host_ = render_view_host;
 328   }
 329 }
 330
 331 void WebNavigationTabObserver::DidStartProvisionalLoadForFrame(
 332     int64 frame_num,
 333     int64 parent_frame_num,
 334     bool is_main_frame,
 335     const GURL& validated_url,
 336     bool is_error_page,
 337     bool is_iframe_srcdoc,
 338     content::RenderViewHost* render_view_host) {
 339   DVLOG(2) << "DidStartProvisionalLoad("
 340            << "render_view_host=" << render_view_host
 341            << ", frame_num=" << frame_num
 342            << ", url=" << validated_url << ")";
 343   if (!render_view_host_)
 344     render_view_host_ = render_view_host;
 345   if (render_view_host != render_view_host_ &&
 346       render_view_host != pending_render_view_host_)
 347     return;
 348
 349   FrameNavigationState::FrameID frame_id(frame_num, render_view_host);
 350   FrameNavigationState::FrameID parent_frame_id(
 351       parent_frame_num, render_view_host);
 352
 353   navigation_state_.TrackFrame(frame_id,
 354                                parent_frame_id,
 355                                validated_url,
 356                                is_main_frame,
 357                                is_error_page,
 358                                is_iframe_srcdoc);
 359
 360   if (!navigation_state_.CanSendEvents(frame_id))
 361     return;
 362
 363   helpers::DispatchOnBeforeNavigate(
 364       web_contents(),
 365       render_view_host->GetProcess()->GetID(),
 366       frame_num,
 367       is_main_frame,
 368       parent_frame_num,
 369       navigation_state_.IsMainFrame(parent_frame_id),
 370       navigation_state_.GetUrl(frame_id));
 371 }
 372
 373 void WebNavigationTabObserver::DidCommitProvisionalLoadForFrame(
 374     int64 frame_num,
 375     const base::string16& frame_unique_name,
 376     bool is_main_frame,
 377     const GURL& url,
 378     content::PageTransition transition_type,
 379     content::RenderViewHost* render_view_host) {
 380   DVLOG(2) << "DidCommitProvisionalLoad("
 381            << "render_view_host=" << render_view_host
 382            << ", frame_num=" << frame_num
 383            << ", url=" << url << ")";
 384   if (render_view_host != render_view_host_ &&
 385       render_view_host != pending_render_view_host_)
 386     return;
 387   FrameNavigationState::FrameID frame_id(frame_num, render_view_host);
 388
 389   bool is_reference_fragment_navigation =
 390       IsReferenceFragmentNavigation(frame_id, url);
 391   bool is_history_state_modification =
 392       navigation_state_.GetNavigationCommitted(frame_id);
 393
 394   if (is_main_frame && render_view_host_ == render_view_host) {
 395     // Changing the reference fragment or the history state using
 396     // history.pushState or history.replaceState does not cancel on-going
 397     // iframe navigations.
 398     if (!is_reference_fragment_navigation && !is_history_state_modification)
 399       SendErrorEvents(web_contents(), render_view_host_, frame_id);
 400     if (pending_render_view_host_) {
 401       SendErrorEvents(web_contents(),
 402                       pending_render_view_host_,
 403                       FrameNavigationState::FrameID());
 404       pending_render_view_host_ = NULL;
 405     }
 406   } else if (pending_render_view_host_ == render_view_host) {
 407     SendErrorEvents(
 408         web_contents(), render_view_host_, FrameNavigationState::FrameID());
 409     render_view_host_ = pending_render_view_host_;
 410     pending_render_view_host_ = NULL;
 411   }
 412
 413   // Update the URL as it might have changed.
 414   navigation_state_.UpdateFrame(frame_id, url);
 415   navigation_state_.SetNavigationCommitted(frame_id);
 416
 417   if (!navigation_state_.CanSendEvents(frame_id))
 418     return;
 419
 420   if (is_reference_fragment_navigation) {
 421     helpers::DispatchOnCommitted(
 422         web_navigation::OnReferenceFragmentUpdated::kEventName,
 423         web_contents(),
 424         frame_num,
 425         is_main_frame,
 426         navigation_state_.GetUrl(frame_id),
 427         transition_type);
 428   } else if (is_history_state_modification) {
 429     helpers::DispatchOnCommitted(
 430         web_navigation::OnHistoryStateUpdated::kEventName,
 431         web_contents(),
 432         frame_num,
 433         is_main_frame,
 434         navigation_state_.GetUrl(frame_id),
 435         transition_type);
 436   } else {
 437     if (navigation_state_.GetIsServerRedirected(frame_id)) {
 438       transition_type = static_cast<content::PageTransition>(
 439           transition_type | content::PAGE_TRANSITION_SERVER_REDIRECT);
 440     }
 441     helpers::DispatchOnCommitted(
 442         web_navigation::OnCommitted::kEventName,
 443         web_contents(),
 444         frame_num,
 445         is_main_frame,
 446         navigation_state_.GetUrl(frame_id),
 447         transition_type);
 448   }
 449 }
 450
 451 void WebNavigationTabObserver::DidFailProvisionalLoad(
 452     int64 frame_num,
 453     const base::string16& frame_unique_id,
 454     bool is_main_frame,
 455     const GURL& validated_url,
 456     int error_code,
 457     const base::string16& error_description,
 458     content::RenderViewHost* render_view_host) {
 459   DVLOG(2) << "DidFailProvisionalLoad("
 460            << "render_view_host=" << render_view_host
 461            << ", frame_num=" << frame_num
 462            << ", url=" << validated_url << ")";
 463   if (render_view_host != render_view_host_ &&
 464       render_view_host != pending_render_view_host_)
 465     return;
 466   bool stop_tracking_frames = false;
 467   if (render_view_host == pending_render_view_host_) {
 468     pending_render_view_host_ = NULL;
 469     stop_tracking_frames = true;
 470   }
 471
 472   FrameNavigationState::FrameID frame_id(frame_num, render_view_host);
 473   if (navigation_state_.CanSendEvents(frame_id)) {
 474     helpers::DispatchOnErrorOccurred(
 475         web_contents(),
 476         render_view_host->GetProcess()->GetID(),
 477         navigation_state_.GetUrl(frame_id),
 478         frame_num,
 479         is_main_frame,
 480         error_code);
 481   }
 482   navigation_state_.SetErrorOccurredInFrame(frame_id);
 483   if (stop_tracking_frames) {
 484     navigation_state_.StopTrackingFramesInRVH(render_view_host,
 485                                               FrameNavigationState::FrameID());
 486   }
 487 }
 488
 489 void WebNavigationTabObserver::DocumentLoadedInFrame(
 490     int64 frame_num,
 491     content::RenderViewHost* render_view_host) {
 492   DVLOG(2) << "DocumentLoadedInFrame("
 493            << "render_view_host=" << render_view_host
 494            << ", frame_num=" << frame_num << ")";
 495   if (render_view_host != render_view_host_)
 496     return;
 497   FrameNavigationState::FrameID frame_id(frame_num, render_view_host);
 498   if (!navigation_state_.CanSendEvents(frame_id))
 499     return;
 500   navigation_state_.SetParsingFinished(frame_id);
 501   helpers::DispatchOnDOMContentLoaded(web_contents(),
 502                                       navigation_state_.GetUrl(frame_id),
 503                                       navigation_state_.IsMainFrame(frame_id),
 504                                       frame_num);
 505
 506   if (!navigation_state_.GetNavigationCompleted(frame_id))
 507     return;
 508
 509   // The load might already have finished by the time we finished parsing. For
 510   // compatibility reasons, we artifically delay the load completed signal until
 511   // after parsing was completed.
 512   helpers::DispatchOnCompleted(web_contents(),
 513                                navigation_state_.GetUrl(frame_id),
 514                                navigation_state_.IsMainFrame(frame_id),
 515                                frame_num);
 516 }
 517
 518 void WebNavigationTabObserver::DidFinishLoad(
 519     int64 frame_num,
 520     const GURL& validated_url,
 521     bool is_main_frame,
 522     content::RenderViewHost* render_view_host) {
 523   DVLOG(2) << "DidFinishLoad("
 524            << "render_view_host=" << render_view_host
 525            << ", frame_num=" << frame_num
 526            << ", url=" << validated_url << ")";
 527   if (render_view_host != render_view_host_)
 528     return;
 529   FrameNavigationState::FrameID frame_id(frame_num, render_view_host);
 530   // When showing replacement content, we might get load signals for frames
 531   // that weren't reguarly loaded.
 532   if (!navigation_state_.IsValidFrame(frame_id))
 533     return;
 534   navigation_state_.SetNavigationCompleted(frame_id);
 535   if (!navigation_state_.CanSendEvents(frame_id))
 536     return;
 537   DCHECK(
 538       navigation_state_.GetUrl(frame_id) == validated_url ||
 539       (navigation_state_.GetUrl(frame_id) == GURL(content::kAboutSrcDocURL) &&
 540        validated_url == GURL(url::kAboutBlankURL)))
 541       << "validated URL is " << validated_url << " but we expected "
 542       << navigation_state_.GetUrl(frame_id);
 543   DCHECK_EQ(navigation_state_.IsMainFrame(frame_id), is_main_frame);
 544
 545   // The load might already have finished by the time we finished parsing. For
 546   // compatibility reasons, we artifically delay the load completed signal until
 547   // after parsing was completed.
 548   if (!navigation_state_.GetParsingFinished(frame_id))
 549     return;
 550   helpers::DispatchOnCompleted(web_contents(),
 551                                navigation_state_.GetUrl(frame_id),
 552                                is_main_frame,
 553                                frame_num);
 554 }
 555
 556 void WebNavigationTabObserver::DidFailLoad(
 557     int64 frame_num,
 558     const GURL& validated_url,
 559     bool is_main_frame,
 560     int error_code,
 561     const base::string16& error_description,
 562     content::RenderViewHost* render_view_host) {
 563   DVLOG(2) << "DidFailLoad("
 564            << "render_view_host=" << render_view_host
 565            << ", frame_num=" << frame_num
 566            << ", url=" << validated_url << ")";
 567   if (render_view_host != render_view_host_)
 568     return;
 569   FrameNavigationState::FrameID frame_id(frame_num, render_view_host);
 570   // When showing replacement content, we might get load signals for frames
 571   // that weren't reguarly loaded.
 572   if (!navigation_state_.IsValidFrame(frame_id))
 573     return;
 574   if (navigation_state_.CanSendEvents(frame_id)) {
 575     helpers::DispatchOnErrorOccurred(
 576         web_contents(),
 577         render_view_host->GetProcess()->GetID(),
 578         navigation_state_.GetUrl(frame_id),
 579         frame_num,
 580         is_main_frame,
 581         error_code);
 582   }
 583   navigation_state_.SetErrorOccurredInFrame(frame_id);
 584 }
 585
 586 void WebNavigationTabObserver::DidGetRedirectForResourceRequest(
 587     content::RenderViewHost* render_view_host,
 588     const content::ResourceRedirectDetails& details) {
 589   if (details.resource_type != ResourceType::MAIN_FRAME &&
 590       details.resource_type != ResourceType::SUB_FRAME) {
 591     return;
 592   }
 593   FrameNavigationState::FrameID frame_id(details.render_frame_id,
 594                                          render_view_host);
 595   navigation_state_.SetIsServerRedirected(frame_id);
 596 }
 597
 598 void WebNavigationTabObserver::DidOpenRequestedURL(
 599     content::WebContents* new_contents,
 600     const GURL& url,
 601     const content::Referrer& referrer,
 602     WindowOpenDisposition disposition,
 603     content::PageTransition transition,
 604     int64 source_frame_num) {
 605   FrameNavigationState::FrameID frame_id(source_frame_num, render_view_host_);
 606   if (!navigation_state_.CanSendEvents(frame_id))
 607     return;
 608
 609   // We only send the onCreatedNavigationTarget if we end up creating a new
 610   // window.
 611   if (disposition != SINGLETON_TAB &&
 612       disposition != NEW_FOREGROUND_TAB &&
 613       disposition != NEW_BACKGROUND_TAB &&
 614       disposition != NEW_POPUP &&
 615       disposition != NEW_WINDOW &&
 616       disposition != OFF_THE_RECORD)
 617     return;
 618
 619   helpers::DispatchOnCreatedNavigationTarget(
 620       web_contents(),
 621       new_contents->GetBrowserContext(),
 622       source_frame_num,
 623       navigation_state_.IsMainFrame(frame_id),
 624       new_contents,
 625       url);
 626 }
 627
 628 void WebNavigationTabObserver::FrameDetached(
 629     content::RenderViewHost* render_view_host,
 630     int64 frame_num) {
 631   if (render_view_host != render_view_host_ &&
 632       render_view_host != pending_render_view_host_) {
 633     return;
 634   }
 635   FrameNavigationState::FrameID frame_id(frame_num, render_view_host);
 636   if (navigation_state_.CanSendEvents(frame_id) &&
 637       !navigation_state_.GetNavigationCompleted(frame_id)) {
 638     helpers::DispatchOnErrorOccurred(
 639         web_contents(),
 640         render_view_host->GetProcess()->GetID(),
 641         navigation_state_.GetUrl(frame_id),
 642         frame_num,
 643         navigation_state_.IsMainFrame(frame_id),
 644         net::ERR_ABORTED);
 645   }
 646   navigation_state_.FrameDetached(frame_id);
 647 }
 648
 649 void WebNavigationTabObserver::WebContentsDestroyed() {
 650   g_tab_observer.Get().erase(web_contents());
 651   registrar_.RemoveAll();
 652   SendErrorEvents(web_contents(), NULL, FrameNavigationState::FrameID());
 653 }
 654
 655 void WebNavigationTabObserver::SendErrorEvents(
 656     content::WebContents* web_contents,
 657     content::RenderViewHost* render_view_host,
 658     FrameNavigationState::FrameID id_to_skip) {
 659   for (FrameNavigationState::const_iterator frame = navigation_state_.begin();
 660        frame != navigation_state_.end(); ++frame) {
 661     if (!navigation_state_.GetNavigationCompleted(*frame) &&
 662         navigation_state_.CanSendEvents(*frame) &&
 663         *frame != id_to_skip &&
 664         (!render_view_host || frame->render_view_host == render_view_host)) {
 665       navigation_state_.SetErrorOccurredInFrame(*frame);
 666       helpers::DispatchOnErrorOccurred(
 667           web_contents,
 668           frame->render_view_host->GetProcess()->GetID(),
 669           navigation_state_.GetUrl(*frame),
 670           frame->frame_num,
 671           navigation_state_.IsMainFrame(*frame),
 672           net::ERR_ABORTED);
 673     }
 674   }
 675   if (render_view_host)
 676     navigation_state_.StopTrackingFramesInRVH(render_view_host, id_to_skip);
 677 }
 678
 679 // See also NavigationController::IsURLInPageNavigation.
 680 bool WebNavigationTabObserver::IsReferenceFragmentNavigation(
 681     FrameNavigationState::FrameID frame_id,
 682     const GURL& url) {
 683   GURL existing_url = navigation_state_.GetUrl(frame_id);
 684   if (existing_url == url)
 685     return false;
 686
 687   url::Replacements<char> replacements;
 688   replacements.ClearRef();
 689   return existing_url.ReplaceComponents(replacements) ==
 690       url.ReplaceComponents(replacements);
 691 }
 692
 693 bool WebNavigationGetFrameFunction::RunSync() {
 694   scoped_ptr<GetFrame::Params> params(GetFrame::Params::Create(*args_));
 695   EXTENSION_FUNCTION_VALIDATE(params.get());
 696   int tab_id = params->details.tab_id;
 697   int frame_id = params->details.frame_id;
 698   int process_id = params->details.process_id;
 699
 700   SetResult(base::Value::CreateNullValue());
 701
 702   content::WebContents* web_contents;
 703   if (!ExtensionTabUtil::GetTabById(tab_id,
 704                                     GetProfile(),
 705                                     include_incognito(),
 706                                     NULL,
 707                                     NULL,
 708                                     &web_contents,
 709                                     NULL) ||
 710       !web_contents) {
 711     return true;
 712   }
 713
 714   WebNavigationTabObserver* observer =
 715       WebNavigationTabObserver::Get(web_contents);
 716   DCHECK(observer);
 717
 718   const FrameNavigationState& frame_navigation_state =
 719       observer->frame_navigation_state();
 720
 721   if (frame_id == 0)
 722     frame_id = frame_navigation_state.GetMainFrameID().frame_num;
 723
 724   content::RenderViewHost* render_view_host =
 725       observer->GetRenderViewHostInProcess(process_id);
 726   if (!render_view_host)
 727     return true;
 728
 729   FrameNavigationState::FrameID internal_frame_id(frame_id, render_view_host);
 730   if (!frame_navigation_state.IsValidFrame(internal_frame_id))
 731     return true;
 732
 733   GURL frame_url = frame_navigation_state.GetUrl(internal_frame_id);
 734   if (!frame_navigation_state.IsValidUrl(frame_url))
 735     return true;
 736
 737   GetFrame::Results::Details frame_details;
 738   frame_details.url = frame_url.spec();
 739   frame_details.error_occurred =
 740       frame_navigation_state.GetErrorOccurredInFrame(internal_frame_id);
 741   FrameNavigationState::FrameID parent_frame_id =
 742       frame_navigation_state.GetParentFrameID(internal_frame_id);
 743   frame_details.parent_frame_id = helpers::GetFrameId(
 744       frame_navigation_state.IsMainFrame(parent_frame_id),
 745       parent_frame_id.frame_num);
 746   results_ = GetFrame::Results::Create(frame_details);
 747   return true;
 748 }
 749
 750 bool WebNavigationGetAllFramesFunction::RunSync() {
 751   scoped_ptr<GetAllFrames::Params> params(GetAllFrames::Params::Create(*args_));
 752   EXTENSION_FUNCTION_VALIDATE(params.get());
 753   int tab_id = params->details.tab_id;
 754
 755   SetResult(base::Value::CreateNullValue());
 756
 757   content::WebContents* web_contents;
 758   if (!ExtensionTabUtil::GetTabById(tab_id,
 759                                     GetProfile(),
 760                                     include_incognito(),
 761                                     NULL,
 762                                     NULL,
 763                                     &web_contents,
 764                                     NULL) ||
 765       !web_contents) {
 766     return true;
 767   }
 768
 769   WebNavigationTabObserver* observer =
 770       WebNavigationTabObserver::Get(web_contents);
 771   DCHECK(observer);
 772
 773   const FrameNavigationState& navigation_state =
 774       observer->frame_navigation_state();
 775
 776   std::vector<linked_ptr<GetAllFrames::Results::DetailsType> > result_list;
 777   for (FrameNavigationState::const_iterator it = navigation_state.begin();
 778        it != navigation_state.end(); ++it) {
 779     FrameNavigationState::FrameID frame_id = *it;
 780     FrameNavigationState::FrameID parent_frame_id =
 781         navigation_state.GetParentFrameID(frame_id);
 782     GURL frame_url = navigation_state.GetUrl(frame_id);
 783     if (!navigation_state.IsValidUrl(frame_url))
 784       continue;
 785     linked_ptr<GetAllFrames::Results::DetailsType> frame(
 786         new GetAllFrames::Results::DetailsType());
 787     frame->url = frame_url.spec();
 788     frame->frame_id = helpers::GetFrameId(
 789         navigation_state.IsMainFrame(frame_id), frame_id.frame_num);
 790     frame->parent_frame_id = helpers::GetFrameId(
 791         navigation_state.IsMainFrame(parent_frame_id),
 792         parent_frame_id.frame_num);
 793     frame->process_id = frame_id.render_view_host->GetProcess()->GetID();
 794     frame->error_occurred = navigation_state.GetErrorOccurredInFrame(frame_id);
 795     result_list.push_back(frame);
 796   }
 797   results_ = GetAllFrames::Results::Create(result_list);
 798   return true;
 799 }
 800
 801 WebNavigationAPI::WebNavigationAPI(content::BrowserContext* context)
 802     : browser_context_(context) {
 803   EventRouter* event_router = EventRouter::Get(browser_context_);
 804   event_router->RegisterObserver(this,
 805                                  web_navigation::OnBeforeNavigate::kEventName);
 806   event_router->RegisterObserver(this, web_navigation::OnCommitted::kEventName);
 807   event_router->RegisterObserver(this, web_navigation::OnCompleted::kEventName);
 808   event_router->RegisterObserver(
 809       this, web_navigation::OnCreatedNavigationTarget::kEventName);
 810   event_router->RegisterObserver(
 811       this, web_navigation::OnDOMContentLoaded::kEventName);
 812   event_router->RegisterObserver(
 813       this, web_navigation::OnHistoryStateUpdated::kEventName);
 814   event_router->RegisterObserver(this,
 815                                  web_navigation::OnErrorOccurred::kEventName);
 816   event_router->RegisterObserver(
 817       this, web_navigation::OnReferenceFragmentUpdated::kEventName);
 818   event_router->RegisterObserver(this,
 819                                  web_navigation::OnTabReplaced::kEventName);
 820 }
 821
 822 WebNavigationAPI::~WebNavigationAPI() {
 823 }
 824
 825 void WebNavigationAPI::Shutdown() {
 826   EventRouter::Get(browser_context_)->UnregisterObserver(this);
 827 }
 828
 829 static base::LazyInstance<BrowserContextKeyedAPIFactory<WebNavigationAPI> >
 830     g_factory = LAZY_INSTANCE_INITIALIZER;
 831
 832 // static
 833 BrowserContextKeyedAPIFactory<WebNavigationAPI>*
 834 WebNavigationAPI::GetFactoryInstance() {
 835   return g_factory.Pointer();
 836 }
 837
 838 void WebNavigationAPI::OnListenerAdded(const EventListenerInfo& details) {
 839   web_navigation_event_router_.reset(new WebNavigationEventRouter(
 840       Profile::FromBrowserContext(browser_context_)));
 841   EventRouter::Get(browser_context_)->UnregisterObserver(this);
 842 }
 843
 844 #endif  // OS_ANDROID
 845
 846 }  // namespace extensions