content/browser/frame_host/interstitial_page_impl.cc

   1 // Copyright 2013 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 "content/browser/frame_host/interstitial_page_impl.h"
   6
   7 #include <vector>
   8
   9 #include "base/bind.h"
  10 #include "base/compiler_specific.h"
  11 #include "base/message_loop/message_loop.h"
  12 #include "base/strings/string_util.h"
  13 #include "base/strings/utf_string_conversions.h"
  14 #include "base/threading/thread.h"
  15 #include "content/browser/dom_storage/dom_storage_context_wrapper.h"
  16 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
  17 #include "content/browser/frame_host/interstitial_page_navigator_impl.h"
  18 #include "content/browser/frame_host/navigation_controller_impl.h"
  19 #include "content/browser/frame_host/navigation_entry_impl.h"
  20 #include "content/browser/loader/resource_dispatcher_host_impl.h"
  21 #include "content/browser/renderer_host/render_process_host_impl.h"
  22 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
  23 #include "content/browser/renderer_host/render_view_host_factory.h"
  24 #include "content/browser/renderer_host/render_view_host_impl.h"
  25 #include "content/browser/renderer_host/render_widget_host_view_base.h"
  26 #include "content/browser/site_instance_impl.h"
  27 #include "content/browser/web_contents/web_contents_impl.h"
  28 #include "content/browser/web_contents/web_contents_view.h"
  29 #include "content/common/frame_messages.h"
  30 #include "content/common/view_messages.h"
  31 #include "content/public/browser/browser_context.h"
  32 #include "content/public/browser/browser_thread.h"
  33 #include "content/public/browser/content_browser_client.h"
  34 #include "content/public/browser/dom_operation_notification_details.h"
  35 #include "content/public/browser/interstitial_page_delegate.h"
  36 #include "content/public/browser/invalidate_type.h"
  37 #include "content/public/browser/notification_service.h"
  38 #include "content/public/browser/notification_source.h"
  39 #include "content/public/browser/storage_partition.h"
  40 #include "content/public/browser/user_metrics.h"
  41 #include "content/public/browser/web_contents_delegate.h"
  42 #include "content/public/common/bindings_policy.h"
  43 #include "content/public/common/page_transition_types.h"
  44 #include "net/base/escape.h"
  45 #include "net/url_request/url_request_context_getter.h"
  46
  47 using blink::WebDragOperation;
  48 using blink::WebDragOperationsMask;
  49
  50 namespace content {
  51 namespace {
  52
  53 void ResourceRequestHelper(ResourceDispatcherHostImpl* rdh,
  54                            int process_id,
  55                            int render_view_host_id,
  56                            ResourceRequestAction action) {
  57   switch (action) {
  58     case BLOCK:
  59       rdh->BlockRequestsForRoute(process_id, render_view_host_id);
  60       break;
  61     case RESUME:
  62       rdh->ResumeBlockedRequestsForRoute(process_id, render_view_host_id);
  63       break;
  64     case CANCEL:
  65       rdh->CancelBlockedRequestsForRoute(process_id, render_view_host_id);
  66       break;
  67     default:
  68       NOTREACHED();
  69   }
  70 }
  71
  72 }  // namespace
  73
  74 class InterstitialPageImpl::InterstitialPageRVHDelegateView
  75   : public RenderViewHostDelegateView {
  76  public:
  77   explicit InterstitialPageRVHDelegateView(InterstitialPageImpl* page);
  78
  79   // RenderViewHostDelegateView implementation:
  80 #if defined(OS_MACOSX) || defined(OS_ANDROID)
  81   virtual void ShowPopupMenu(const gfx::Rect& bounds,
  82                              int item_height,
  83                              double item_font_size,
  84                              int selected_item,
  85                              const std::vector<MenuItem>& items,
  86                              bool right_aligned,
  87                              bool allow_multiple_selection) OVERRIDE;
  88   virtual void HidePopupMenu() OVERRIDE;
  89 #endif
  90   virtual void StartDragging(const DropData& drop_data,
  91                              WebDragOperationsMask operations_allowed,
  92                              const gfx::ImageSkia& image,
  93                              const gfx::Vector2d& image_offset,
  94                              const DragEventSourceInfo& event_info) OVERRIDE;
  95   virtual void UpdateDragCursor(WebDragOperation operation) OVERRIDE;
  96   virtual void GotFocus() OVERRIDE;
  97   virtual void TakeFocus(bool reverse) OVERRIDE;
  98   virtual void OnFindReply(int request_id,
  99                            int number_of_matches,
 100                            const gfx::Rect& selection_rect,
 101                            int active_match_ordinal,
 102                            bool final_update);
 103
 104  private:
 105   InterstitialPageImpl* interstitial_page_;
 106
 107   DISALLOW_COPY_AND_ASSIGN(InterstitialPageRVHDelegateView);
 108 };
 109
 110
 111 // We keep a map of the various blocking pages shown as the UI tests need to
 112 // be able to retrieve them.
 113 typedef std::map<WebContents*, InterstitialPageImpl*> InterstitialPageMap;
 114 static InterstitialPageMap* g_web_contents_to_interstitial_page;
 115
 116 // Initializes g_web_contents_to_interstitial_page in a thread-safe manner.
 117 // Should be called before accessing g_web_contents_to_interstitial_page.
 118 static void InitInterstitialPageMap() {
 119   if (!g_web_contents_to_interstitial_page)
 120     g_web_contents_to_interstitial_page = new InterstitialPageMap;
 121 }
 122
 123 InterstitialPage* InterstitialPage::Create(WebContents* web_contents,
 124                                            bool new_navigation,
 125                                            const GURL& url,
 126                                            InterstitialPageDelegate* delegate) {
 127   return new InterstitialPageImpl(
 128       web_contents,
 129       static_cast<RenderWidgetHostDelegate*>(
 130           static_cast<WebContentsImpl*>(web_contents)),
 131       new_navigation, url, delegate);
 132 }
 133
 134 InterstitialPage* InterstitialPage::GetInterstitialPage(
 135     WebContents* web_contents) {
 136   InitInterstitialPageMap();
 137   InterstitialPageMap::const_iterator iter =
 138       g_web_contents_to_interstitial_page->find(web_contents);
 139   if (iter == g_web_contents_to_interstitial_page->end())
 140     return NULL;
 141
 142   return iter->second;
 143 }
 144
 145 InterstitialPageImpl::InterstitialPageImpl(
 146     WebContents* web_contents,
 147     RenderWidgetHostDelegate* render_widget_host_delegate,
 148     bool new_navigation,
 149     const GURL& url,
 150     InterstitialPageDelegate* delegate)
 151     : WebContentsObserver(web_contents),
 152       web_contents_(web_contents),
 153       controller_(static_cast<NavigationControllerImpl*>(
 154           &web_contents->GetController())),
 155       render_widget_host_delegate_(render_widget_host_delegate),
 156       url_(url),
 157       new_navigation_(new_navigation),
 158       should_discard_pending_nav_entry_(new_navigation),
 159       reload_on_dont_proceed_(false),
 160       enabled_(true),
 161       action_taken_(NO_ACTION),
 162       render_view_host_(NULL),
 163       // TODO(nasko): The InterstitialPageImpl will need to provide its own
 164       // NavigationControllerImpl to the Navigator, which is separate from
 165       // the WebContents one, so we can enforce no navigation policy here.
 166       // While we get the code to a point to do this, pass NULL for it.
 167       // TODO(creis): We will also need to pass delegates for the RVHM as we
 168       // start to use it.
 169       frame_tree_(new InterstitialPageNavigatorImpl(this, controller_),
 170                   this, this, this,
 171                   static_cast<WebContentsImpl*>(web_contents)),
 172       original_child_id_(web_contents->GetRenderProcessHost()->GetID()),
 173       original_rvh_id_(web_contents->GetRenderViewHost()->GetRoutingID()),
 174       should_revert_web_contents_title_(false),
 175       web_contents_was_loading_(false),
 176       resource_dispatcher_host_notified_(false),
 177       rvh_delegate_view_(new InterstitialPageRVHDelegateView(this)),
 178       create_view_(true),
 179       delegate_(delegate),
 180       weak_ptr_factory_(this) {
 181   InitInterstitialPageMap();
 182   // It would be inconsistent to create an interstitial with no new navigation
 183   // (which is the case when the interstitial was triggered by a sub-resource on
 184   // a page) when we have a pending entry (in the process of loading a new top
 185   // frame).
 186   DCHECK(new_navigation || !web_contents->GetController().GetPendingEntry());
 187 }
 188
 189 InterstitialPageImpl::~InterstitialPageImpl() {
 190 }
 191
 192 void InterstitialPageImpl::Show() {
 193   if (!enabled())
 194     return;
 195
 196   // If an interstitial is already showing or about to be shown, close it before
 197   // showing the new one.
 198   // Be careful not to take an action on the old interstitial more than once.
 199   InterstitialPageMap::const_iterator iter =
 200       g_web_contents_to_interstitial_page->find(web_contents_);
 201   if (iter != g_web_contents_to_interstitial_page->end()) {
 202     InterstitialPageImpl* interstitial = iter->second;
 203     if (interstitial->action_taken_ != NO_ACTION) {
 204       interstitial->Hide();
 205     } else {
 206       // If we are currently showing an interstitial page for which we created
 207       // a transient entry and a new interstitial is shown as the result of a
 208       // new browser initiated navigation, then that transient entry has already
 209       // been discarded and a new pending navigation entry created.
 210       // So we should not discard that new pending navigation entry.
 211       // See http://crbug.com/9791
 212       if (new_navigation_ && interstitial->new_navigation_)
 213         interstitial->should_discard_pending_nav_entry_= false;
 214       interstitial->DontProceed();
 215     }
 216   }
 217
 218   // Block the resource requests for the render view host while it is hidden.
 219   TakeActionOnResourceDispatcher(BLOCK);
 220   // We need to be notified when the RenderViewHost is destroyed so we can
 221   // cancel the blocked requests.  We cannot do that on
 222   // NOTIFY_WEB_CONTENTS_DESTROYED as at that point the RenderViewHost has
 223   // already been destroyed.
 224   notification_registrar_.Add(
 225       this, NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED,
 226       Source<RenderWidgetHost>(controller_->delegate()->GetRenderViewHost()));
 227
 228   // Update the g_web_contents_to_interstitial_page map.
 229   iter = g_web_contents_to_interstitial_page->find(web_contents_);
 230   DCHECK(iter == g_web_contents_to_interstitial_page->end());
 231   (*g_web_contents_to_interstitial_page)[web_contents_] = this;
 232
 233   if (new_navigation_) {
 234     NavigationEntryImpl* entry = new NavigationEntryImpl;
 235     entry->SetURL(url_);
 236     entry->SetVirtualURL(url_);
 237     entry->set_page_type(PAGE_TYPE_INTERSTITIAL);
 238
 239     // Give delegates a chance to set some states on the navigation entry.
 240     delegate_->OverrideEntry(entry);
 241
 242     controller_->SetTransientEntry(entry);
 243   }
 244
 245   DCHECK(!render_view_host_);
 246   render_view_host_ = static_cast<RenderViewHostImpl*>(CreateRenderViewHost());
 247   render_view_host_->AttachToFrameTree();
 248   CreateWebContentsView();
 249
 250   std::string data_url = "data:text/html;charset=utf-8," +
 251                          net::EscapePath(delegate_->GetHTMLContents());
 252   render_view_host_->NavigateToURL(GURL(data_url));
 253
 254   notification_registrar_.Add(this, NOTIFICATION_NAV_ENTRY_PENDING,
 255       Source<NavigationController>(controller_));
 256 }
 257
 258 void InterstitialPageImpl::Hide() {
 259   // We may have already been hidden, and are just waiting to be deleted.
 260   // We can't check for enabled() here, because some callers have already
 261   // called Disable.
 262   if (!render_view_host_)
 263     return;
 264
 265   Disable();
 266
 267   RenderWidgetHostView* old_view =
 268       controller_->delegate()->GetRenderViewHost()->GetView();
 269   if (controller_->delegate()->GetInterstitialPage() == this &&
 270       old_view &&
 271       !old_view->IsShowing() &&
 272       !controller_->delegate()->IsHidden()) {
 273     // Show the original RVH since we're going away.  Note it might not exist if
 274     // the renderer crashed while the interstitial was showing.
 275     // Note that it is important that we don't call Show() if the view is
 276     // already showing. That would result in bad things (unparented HWND on
 277     // Windows for example) happening.
 278     old_view->Show();
 279   }
 280
 281   // If the focus was on the interstitial, let's keep it to the page.
 282   // (Note that in unit-tests the RVH may not have a view).
 283   if (render_view_host_->GetView() &&
 284       render_view_host_->GetView()->HasFocus() &&
 285       controller_->delegate()->GetRenderViewHost()->GetView()) {
 286     controller_->delegate()->GetRenderViewHost()->GetView()->Focus();
 287   }
 288
 289   // Delete this and call Shutdown on the RVH asynchronously, as we may have
 290   // been called from a RVH delegate method, and we can't delete the RVH out
 291   // from under itself.
 292   base::MessageLoop::current()->PostNonNestableTask(
 293       FROM_HERE,
 294       base::Bind(&InterstitialPageImpl::Shutdown,
 295                  weak_ptr_factory_.GetWeakPtr()));
 296   render_view_host_ = NULL;
 297   frame_tree_.ResetForMainFrameSwap();
 298   controller_->delegate()->DetachInterstitialPage();
 299   // Let's revert to the original title if necessary.
 300   NavigationEntry* entry = controller_->GetVisibleEntry();
 301   if (!new_navigation_ && should_revert_web_contents_title_) {
 302     entry->SetTitle(original_web_contents_title_);
 303     controller_->delegate()->NotifyNavigationStateChanged(
 304         INVALIDATE_TYPE_TITLE);
 305   }
 306
 307   InterstitialPageMap::iterator iter =
 308       g_web_contents_to_interstitial_page->find(web_contents_);
 309   DCHECK(iter != g_web_contents_to_interstitial_page->end());
 310   if (iter != g_web_contents_to_interstitial_page->end())
 311     g_web_contents_to_interstitial_page->erase(iter);
 312
 313   // Clear the WebContents pointer, because it may now be deleted.
 314   // This signifies that we are in the process of shutting down.
 315   web_contents_ = NULL;
 316 }
 317
 318 void InterstitialPageImpl::Observe(
 319     int type,
 320     const NotificationSource& source,
 321     const NotificationDetails& details) {
 322   switch (type) {
 323     case NOTIFICATION_NAV_ENTRY_PENDING:
 324       // We are navigating away from the interstitial (the user has typed a URL
 325       // in the location bar or clicked a bookmark).  Make sure clicking on the
 326       // interstitial will have no effect.  Also cancel any blocked requests
 327       // on the ResourceDispatcherHost.  Note that when we get this notification
 328       // the RenderViewHost has not yet navigated so we'll unblock the
 329       // RenderViewHost before the resource request for the new page we are
 330       // navigating arrives in the ResourceDispatcherHost.  This ensures that
 331       // request won't be blocked if the same RenderViewHost was used for the
 332       // new navigation.
 333       Disable();
 334       TakeActionOnResourceDispatcher(CANCEL);
 335       break;
 336     case NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED:
 337       if (action_taken_ == NO_ACTION) {
 338         // The RenderViewHost is being destroyed (as part of the tab being
 339         // closed); make sure we clear the blocked requests.
 340         RenderViewHost* rvh = static_cast<RenderViewHost*>(
 341             static_cast<RenderViewHostImpl*>(
 342                 RenderWidgetHostImpl::From(
 343                     Source<RenderWidgetHost>(source).ptr())));
 344         DCHECK(rvh->GetProcess()->GetID() == original_child_id_ &&
 345                rvh->GetRoutingID() == original_rvh_id_);
 346         TakeActionOnResourceDispatcher(CANCEL);
 347       }
 348       break;
 349     default:
 350       NOTREACHED();
 351   }
 352 }
 353
 354 void InterstitialPageImpl::NavigationEntryCommitted(
 355     const LoadCommittedDetails& load_details) {
 356   OnNavigatingAwayOrTabClosing();
 357 }
 358
 359 void InterstitialPageImpl::WebContentsDestroyed() {
 360   OnNavigatingAwayOrTabClosing();
 361 }
 362
 363 bool InterstitialPageImpl::OnMessageReceived(
 364     const IPC::Message& message,
 365     RenderFrameHost* render_frame_host) {
 366   return OnMessageReceived(message);
 367 }
 368
 369 bool InterstitialPageImpl::OnMessageReceived(RenderFrameHost* render_frame_host,
 370                                              const IPC::Message& message) {
 371   return OnMessageReceived(message);
 372 }
 373
 374 bool InterstitialPageImpl::OnMessageReceived(RenderViewHost* render_view_host,
 375                                              const IPC::Message& message) {
 376   return OnMessageReceived(message);
 377 }
 378
 379 bool InterstitialPageImpl::OnMessageReceived(const IPC::Message& message) {
 380
 381   bool handled = true;
 382   IPC_BEGIN_MESSAGE_MAP(InterstitialPageImpl, message)
 383     IPC_MESSAGE_HANDLER(FrameHostMsg_DomOperationResponse,
 384                         OnDomOperationResponse)
 385     IPC_MESSAGE_UNHANDLED(handled = false)
 386   IPC_END_MESSAGE_MAP()
 387
 388   return handled;
 389 }
 390
 391 void InterstitialPageImpl::RenderFrameCreated(
 392     RenderFrameHost* render_frame_host) {
 393   // Note this is only for subframes in the interstitial, the notification for
 394   // the main frame happens in RenderViewCreated.
 395   controller_->delegate()->RenderFrameForInterstitialPageCreated(
 396       render_frame_host);
 397 }
 398
 399 void InterstitialPageImpl::UpdateTitle(
 400     RenderFrameHost* render_frame_host,
 401     int32 page_id,
 402     const base::string16& title,
 403     base::i18n::TextDirection title_direction) {
 404   if (!enabled())
 405     return;
 406
 407   RenderViewHost* render_view_host = render_frame_host->GetRenderViewHost();
 408   DCHECK(render_view_host == render_view_host_);
 409   NavigationEntry* entry = controller_->GetVisibleEntry();
 410   if (!entry) {
 411     // Crash reports from the field indicate this can be NULL.
 412     // This is unexpected as InterstitialPages constructed with the
 413     // new_navigation flag set to true create a transient navigation entry
 414     // (that is returned as the active entry). And the only case so far of
 415     // interstitial created with that flag set to false is with the
 416     // SafeBrowsingBlockingPage, when the resource triggering the interstitial
 417     // is a sub-resource, meaning the main page has already been loaded and a
 418     // navigation entry should have been created.
 419     NOTREACHED();
 420     return;
 421   }
 422
 423   // If this interstitial is shown on an existing navigation entry, we'll need
 424   // to remember its title so we can revert to it when hidden.
 425   if (!new_navigation_ && !should_revert_web_contents_title_) {
 426     original_web_contents_title_ = entry->GetTitle();
 427     should_revert_web_contents_title_ = true;
 428   }
 429   // TODO(evan): make use of title_direction.
 430   // http://code.google.com/p/chromium/issues/detail?id=27094
 431   entry->SetTitle(title);
 432   controller_->delegate()->NotifyNavigationStateChanged(INVALIDATE_TYPE_TITLE);
 433 }
 434
 435 AccessibilityMode InterstitialPageImpl::GetAccessibilityMode() const {
 436   if (web_contents_)
 437     return static_cast<WebContentsImpl*>(web_contents_)->GetAccessibilityMode();
 438   else
 439     return AccessibilityModeOff;
 440 }
 441
 442 RenderViewHostDelegateView* InterstitialPageImpl::GetDelegateView() {
 443   return rvh_delegate_view_.get();
 444 }
 445
 446 const GURL& InterstitialPageImpl::GetMainFrameLastCommittedURL() const {
 447   return url_;
 448 }
 449
 450 void InterstitialPageImpl::RenderViewTerminated(
 451     RenderViewHost* render_view_host,
 452     base::TerminationStatus status,
 453     int error_code) {
 454   // Our renderer died. This should not happen in normal cases.
 455   // If we haven't already started shutdown, just dismiss the interstitial.
 456   // We cannot check for enabled() here, because we may have called Disable
 457   // without calling Hide.
 458   if (render_view_host_)
 459     DontProceed();
 460 }
 461
 462 void InterstitialPageImpl::DidNavigate(
 463     RenderViewHost* render_view_host,
 464     const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
 465   // A fast user could have navigated away from the page that triggered the
 466   // interstitial while the interstitial was loading, that would have disabled
 467   // us. In that case we can dismiss ourselves.
 468   if (!enabled()) {
 469     DontProceed();
 470     return;
 471   }
 472   if (PageTransitionCoreTypeIs(params.transition,
 473                                PAGE_TRANSITION_AUTO_SUBFRAME)) {
 474     // No need to handle navigate message from iframe in the interstitial page.
 475     return;
 476   }
 477
 478   // The RenderViewHost has loaded its contents, we can show it now.
 479   if (!controller_->delegate()->IsHidden())
 480     render_view_host_->GetView()->Show();
 481   controller_->delegate()->AttachInterstitialPage(this);
 482
 483   RenderWidgetHostView* rwh_view =
 484       controller_->delegate()->GetRenderViewHost()->GetView();
 485
 486   // The RenderViewHost may already have crashed before we even get here.
 487   if (rwh_view) {
 488     // If the page has focus, focus the interstitial.
 489     if (rwh_view->HasFocus())
 490       Focus();
 491
 492     // Hide the original RVH since we're showing the interstitial instead.
 493     rwh_view->Hide();
 494   }
 495
 496   // Notify the tab we are not loading so the throbber is stopped. It also
 497   // causes a WebContentsObserver::DidStopLoading callback that the
 498   // AutomationProvider (used by the UI tests) expects to consider a navigation
 499   // as complete. Without this, navigating in a UI test to a URL that triggers
 500   // an interstitial would hang.
 501   web_contents_was_loading_ = controller_->delegate()->IsLoading();
 502   controller_->delegate()->SetIsLoading(
 503       controller_->delegate()->GetRenderViewHost(), false, true, NULL);
 504 }
 505
 506 RendererPreferences InterstitialPageImpl::GetRendererPrefs(
 507     BrowserContext* browser_context) const {
 508   delegate_->OverrideRendererPrefs(&renderer_preferences_);
 509   return renderer_preferences_;
 510 }
 511
 512 WebPreferences InterstitialPageImpl::ComputeWebkitPrefs() {
 513   if (!enabled())
 514     return WebPreferences();
 515
 516   return render_view_host_->ComputeWebkitPrefs(url_);
 517 }
 518
 519 void InterstitialPageImpl::RenderWidgetDeleted(
 520     RenderWidgetHostImpl* render_widget_host) {
 521   // TODO(creis): Remove this method once we verify the shutdown path is sane.
 522   CHECK(!web_contents_);
 523 }
 524
 525 bool InterstitialPageImpl::PreHandleKeyboardEvent(
 526     const NativeWebKeyboardEvent& event,
 527     bool* is_keyboard_shortcut) {
 528   if (!enabled())
 529     return false;
 530   return render_widget_host_delegate_->PreHandleKeyboardEvent(
 531       event, is_keyboard_shortcut);
 532 }
 533
 534 void InterstitialPageImpl::HandleKeyboardEvent(
 535       const NativeWebKeyboardEvent& event) {
 536   if (enabled())
 537     render_widget_host_delegate_->HandleKeyboardEvent(event);
 538 }
 539
 540 #if defined(OS_WIN)
 541 gfx::NativeViewAccessible
 542 InterstitialPageImpl::GetParentNativeViewAccessible() {
 543   if (web_contents_) {
 544     WebContentsImpl* wci = static_cast<WebContentsImpl*>(web_contents_);
 545     return wci->GetParentNativeViewAccessible();
 546   }
 547   return NULL;
 548 }
 549 #endif
 550
 551 WebContents* InterstitialPageImpl::web_contents() const {
 552   return web_contents_;
 553 }
 554
 555 RenderViewHost* InterstitialPageImpl::CreateRenderViewHost() {
 556   if (!enabled())
 557     return NULL;
 558
 559   // Interstitial pages don't want to share the session storage so we mint a
 560   // new one.
 561   BrowserContext* browser_context = web_contents()->GetBrowserContext();
 562   scoped_refptr<SiteInstance> site_instance =
 563       SiteInstance::Create(browser_context);
 564   DOMStorageContextWrapper* dom_storage_context =
 565       static_cast<DOMStorageContextWrapper*>(
 566           BrowserContext::GetStoragePartition(
 567               browser_context, site_instance.get())->GetDOMStorageContext());
 568   session_storage_namespace_ =
 569       new SessionStorageNamespaceImpl(dom_storage_context);
 570
 571   // Use the RenderViewHost from our FrameTree.
 572   frame_tree_.root()->render_manager()->Init(
 573       browser_context, site_instance.get(), MSG_ROUTING_NONE, MSG_ROUTING_NONE);
 574   return frame_tree_.root()->current_frame_host()->render_view_host();
 575 }
 576
 577 WebContentsView* InterstitialPageImpl::CreateWebContentsView() {
 578   if (!enabled() || !create_view_)
 579     return NULL;
 580   WebContentsView* wcv =
 581       static_cast<WebContentsImpl*>(web_contents())->GetView();
 582   RenderWidgetHostViewBase* view =
 583       wcv->CreateViewForWidget(render_view_host_);
 584   render_view_host_->SetView(view);
 585   render_view_host_->AllowBindings(BINDINGS_POLICY_DOM_AUTOMATION);
 586
 587   int32 max_page_id = web_contents()->
 588       GetMaxPageIDForSiteInstance(render_view_host_->GetSiteInstance());
 589   render_view_host_->CreateRenderView(base::string16(),
 590                                       MSG_ROUTING_NONE,
 591                                       MSG_ROUTING_NONE,
 592                                       max_page_id,
 593                                       false);
 594   controller_->delegate()->RenderFrameForInterstitialPageCreated(
 595       frame_tree_.root()->current_frame_host());
 596   view->SetSize(web_contents()->GetContainerBounds().size());
 597   // Don't show the interstitial until we have navigated to it.
 598   view->Hide();
 599   return wcv;
 600 }
 601
 602 void InterstitialPageImpl::Proceed() {
 603   // Don't repeat this if we are already shutting down.  We cannot check for
 604   // enabled() here, because we may have called Disable without calling Hide.
 605   if (!render_view_host_)
 606     return;
 607
 608   if (action_taken_ != NO_ACTION) {
 609     NOTREACHED();
 610     return;
 611   }
 612   Disable();
 613   action_taken_ = PROCEED_ACTION;
 614
 615   // Resumes the throbber, if applicable.
 616   if (web_contents_was_loading_)
 617     controller_->delegate()->SetIsLoading(
 618         controller_->delegate()->GetRenderViewHost(), true, true, NULL);
 619
 620   // If this is a new navigation, the old page is going away, so we cancel any
 621   // blocked requests for it.  If it is not a new navigation, then it means the
 622   // interstitial was shown as a result of a resource loading in the page.
 623   // Since the user wants to proceed, we'll let any blocked request go through.
 624   if (new_navigation_)
 625     TakeActionOnResourceDispatcher(CANCEL);
 626   else
 627     TakeActionOnResourceDispatcher(RESUME);
 628
 629   // No need to hide if we are a new navigation, we'll get hidden when the
 630   // navigation is committed.
 631   if (!new_navigation_) {
 632     Hide();
 633     delegate_->OnProceed();
 634     return;
 635   }
 636
 637   delegate_->OnProceed();
 638 }
 639
 640 void InterstitialPageImpl::DontProceed() {
 641   // Don't repeat this if we are already shutting down.  We cannot check for
 642   // enabled() here, because we may have called Disable without calling Hide.
 643   if (!render_view_host_)
 644     return;
 645   DCHECK(action_taken_ != DONT_PROCEED_ACTION);
 646
 647   Disable();
 648   action_taken_ = DONT_PROCEED_ACTION;
 649
 650   // If this is a new navigation, we are returning to the original page, so we
 651   // resume blocked requests for it.  If it is not a new navigation, then it
 652   // means the interstitial was shown as a result of a resource loading in the
 653   // page and we won't return to the original page, so we cancel blocked
 654   // requests in that case.
 655   if (new_navigation_)
 656     TakeActionOnResourceDispatcher(RESUME);
 657   else
 658     TakeActionOnResourceDispatcher(CANCEL);
 659
 660   if (should_discard_pending_nav_entry_) {
 661     // Since no navigation happens we have to discard the transient entry
 662     // explicitely.  Note that by calling DiscardNonCommittedEntries() we also
 663     // discard the pending entry, which is what we want, since the navigation is
 664     // cancelled.
 665     controller_->DiscardNonCommittedEntries();
 666   }
 667
 668   if (reload_on_dont_proceed_)
 669     controller_->Reload(true);
 670
 671   Hide();
 672   delegate_->OnDontProceed();
 673 }
 674
 675 void InterstitialPageImpl::CancelForNavigation() {
 676   // The user is trying to navigate away.  We should unblock the renderer and
 677   // disable the interstitial, but keep it visible until the navigation
 678   // completes.
 679   Disable();
 680   // If this interstitial was shown for a new navigation, allow any navigations
 681   // on the original page to resume (e.g., subresource requests, XHRs, etc).
 682   // Otherwise, cancel the pending, possibly dangerous navigations.
 683   if (new_navigation_)
 684     TakeActionOnResourceDispatcher(RESUME);
 685   else
 686     TakeActionOnResourceDispatcher(CANCEL);
 687 }
 688
 689 void InterstitialPageImpl::SetSize(const gfx::Size& size) {
 690   if (!enabled())
 691     return;
 692 #if !defined(OS_MACOSX)
 693   // When a tab is closed, we might be resized after our view was NULLed
 694   // (typically if there was an info-bar).
 695   if (render_view_host_->GetView())
 696     render_view_host_->GetView()->SetSize(size);
 697 #else
 698   // TODO(port): Does Mac need to SetSize?
 699   NOTIMPLEMENTED();
 700 #endif
 701 }
 702
 703 void InterstitialPageImpl::Focus() {
 704   // Focus the native window.
 705   if (!enabled())
 706     return;
 707   render_view_host_->GetView()->Focus();
 708 }
 709
 710 void InterstitialPageImpl::FocusThroughTabTraversal(bool reverse) {
 711   if (!enabled())
 712     return;
 713   render_view_host_->SetInitialFocus(reverse);
 714 }
 715
 716 RenderWidgetHostView* InterstitialPageImpl::GetView() {
 717   return render_view_host_->GetView();
 718 }
 719
 720 RenderViewHost* InterstitialPageImpl::GetRenderViewHostForTesting() const {
 721   return render_view_host_;
 722 }
 723
 724 #if defined(OS_ANDROID)
 725 RenderViewHost* InterstitialPageImpl::GetRenderViewHost() const {
 726   return render_view_host_;
 727 }
 728 #endif
 729
 730 InterstitialPageDelegate* InterstitialPageImpl::GetDelegateForTesting() {
 731   return delegate_.get();
 732 }
 733
 734 void InterstitialPageImpl::DontCreateViewForTesting() {
 735   create_view_ = false;
 736 }
 737
 738 gfx::Rect InterstitialPageImpl::GetRootWindowResizerRect() const {
 739   return gfx::Rect();
 740 }
 741
 742 void InterstitialPageImpl::CreateNewWindow(
 743     int render_process_id,
 744     int route_id,
 745     int main_frame_route_id,
 746     const ViewHostMsg_CreateWindow_Params& params,
 747     SessionStorageNamespace* session_storage_namespace) {
 748   NOTREACHED() << "InterstitialPage does not support showing popups yet.";
 749 }
 750
 751 void InterstitialPageImpl::CreateNewWidget(int render_process_id,
 752                                            int route_id,
 753                                            blink::WebPopupType popup_type) {
 754   NOTREACHED() << "InterstitialPage does not support showing drop-downs yet.";
 755 }
 756
 757 void InterstitialPageImpl::CreateNewFullscreenWidget(int render_process_id,
 758                                                      int route_id) {
 759   NOTREACHED()
 760       << "InterstitialPage does not support showing full screen popups.";
 761 }
 762
 763 void InterstitialPageImpl::ShowCreatedWindow(int route_id,
 764                                              WindowOpenDisposition disposition,
 765                                              const gfx::Rect& initial_pos,
 766                                              bool user_gesture) {
 767   NOTREACHED() << "InterstitialPage does not support showing popups yet.";
 768 }
 769
 770 void InterstitialPageImpl::ShowCreatedWidget(int route_id,
 771                                              const gfx::Rect& initial_pos) {
 772   NOTREACHED() << "InterstitialPage does not support showing drop-downs yet.";
 773 }
 774
 775 void InterstitialPageImpl::ShowCreatedFullscreenWidget(int route_id) {
 776   NOTREACHED()
 777       << "InterstitialPage does not support showing full screen popups.";
 778 }
 779
 780 SessionStorageNamespace* InterstitialPageImpl::GetSessionStorageNamespace(
 781     SiteInstance* instance) {
 782   return session_storage_namespace_.get();
 783 }
 784
 785 FrameTree* InterstitialPageImpl::GetFrameTree() {
 786   return &frame_tree_;
 787 }
 788
 789 void InterstitialPageImpl::Disable() {
 790   enabled_ = false;
 791 }
 792
 793 void InterstitialPageImpl::Shutdown() {
 794   delete this;
 795 }
 796
 797 void InterstitialPageImpl::OnNavigatingAwayOrTabClosing() {
 798   if (action_taken_ == NO_ACTION) {
 799     // We are navigating away from the interstitial or closing a tab with an
 800     // interstitial.  Default to DontProceed(). We don't just call Hide as
 801     // subclasses will almost certainly override DontProceed to do some work
 802     // (ex: close pending connections).
 803     DontProceed();
 804   } else {
 805     // User decided to proceed and either the navigation was committed or
 806     // the tab was closed before that.
 807     Hide();
 808   }
 809 }
 810
 811 void InterstitialPageImpl::TakeActionOnResourceDispatcher(
 812     ResourceRequestAction action) {
 813   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)) <<
 814       "TakeActionOnResourceDispatcher should be called on the main thread.";
 815
 816   if (action == CANCEL || action == RESUME) {
 817     if (resource_dispatcher_host_notified_)
 818       return;
 819     resource_dispatcher_host_notified_ = true;
 820   }
 821
 822   // The tab might not have a render_view_host if it was closed (in which case,
 823   // we have taken care of the blocked requests when processing
 824   // NOTIFY_RENDER_WIDGET_HOST_DESTROYED.
 825   // Also we need to test there is a ResourceDispatcherHostImpl, as when unit-
 826   // tests we don't have one.
 827   RenderViewHostImpl* rvh = RenderViewHostImpl::FromID(original_child_id_,
 828                                                        original_rvh_id_);
 829   if (!rvh || !ResourceDispatcherHostImpl::Get())
 830     return;
 831
 832   BrowserThread::PostTask(
 833       BrowserThread::IO,
 834       FROM_HERE,
 835       base::Bind(
 836           &ResourceRequestHelper,
 837           ResourceDispatcherHostImpl::Get(),
 838           original_child_id_,
 839           original_rvh_id_,
 840           action));
 841 }
 842
 843 void InterstitialPageImpl::OnDomOperationResponse(
 844     const std::string& json_string,
 845     int automation_id) {
 846   // Needed by test code.
 847   DomOperationNotificationDetails details(json_string, automation_id);
 848   NotificationService::current()->Notify(
 849       NOTIFICATION_DOM_OPERATION_RESPONSE,
 850       Source<WebContents>(web_contents()),
 851       Details<DomOperationNotificationDetails>(&details));
 852
 853   if (!enabled())
 854     return;
 855   delegate_->CommandReceived(details.json);
 856 }
 857
 858
 859 InterstitialPageImpl::InterstitialPageRVHDelegateView::
 860     InterstitialPageRVHDelegateView(InterstitialPageImpl* page)
 861     : interstitial_page_(page) {
 862 }
 863
 864 #if defined(OS_MACOSX) || defined(OS_ANDROID)
 865 void InterstitialPageImpl::InterstitialPageRVHDelegateView::ShowPopupMenu(
 866     const gfx::Rect& bounds,
 867     int item_height,
 868     double item_font_size,
 869     int selected_item,
 870     const std::vector<MenuItem>& items,
 871     bool right_aligned,
 872     bool allow_multiple_selection) {
 873   NOTREACHED() << "InterstitialPage does not support showing popup menus.";
 874 }
 875
 876 void InterstitialPageImpl::InterstitialPageRVHDelegateView::HidePopupMenu() {
 877   NOTREACHED() << "InterstitialPage does not support showing popup menus.";
 878 }
 879 #endif
 880
 881 void InterstitialPageImpl::InterstitialPageRVHDelegateView::StartDragging(
 882     const DropData& drop_data,
 883     WebDragOperationsMask allowed_operations,
 884     const gfx::ImageSkia& image,
 885     const gfx::Vector2d& image_offset,
 886     const DragEventSourceInfo& event_info) {
 887   interstitial_page_->render_view_host_->DragSourceSystemDragEnded();
 888   DVLOG(1) << "InterstitialPage does not support dragging yet.";
 889 }
 890
 891 void InterstitialPageImpl::InterstitialPageRVHDelegateView::UpdateDragCursor(
 892     WebDragOperation) {
 893   NOTREACHED() << "InterstitialPage does not support dragging yet.";
 894 }
 895
 896 void InterstitialPageImpl::InterstitialPageRVHDelegateView::GotFocus() {
 897   WebContents* web_contents = interstitial_page_->web_contents();
 898   if (web_contents && web_contents->GetDelegate())
 899     web_contents->GetDelegate()->WebContentsFocused(web_contents);
 900 }
 901
 902 void InterstitialPageImpl::InterstitialPageRVHDelegateView::TakeFocus(
 903     bool reverse) {
 904   if (!interstitial_page_->web_contents())
 905     return;
 906   WebContentsImpl* web_contents =
 907       static_cast<WebContentsImpl*>(interstitial_page_->web_contents());
 908   if (!web_contents->GetDelegateView())
 909     return;
 910
 911   web_contents->GetDelegateView()->TakeFocus(reverse);
 912 }
 913
 914 void InterstitialPageImpl::InterstitialPageRVHDelegateView::OnFindReply(
 915     int request_id, int number_of_matches, const gfx::Rect& selection_rect,
 916     int active_match_ordinal, bool final_update) {
 917 }
 918
 919 }  // namespace content