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 RenderViewHostDelegateView* InterstitialPageImpl::GetDelegateView() {
 436   return rvh_delegate_view_.get();
 437 }
 438
 439 const GURL& InterstitialPageImpl::GetMainFrameLastCommittedURL() const {
 440   return url_;
 441 }
 442
 443 void InterstitialPageImpl::RenderViewTerminated(
 444     RenderViewHost* render_view_host,
 445     base::TerminationStatus status,
 446     int error_code) {
 447   // Our renderer died. This should not happen in normal cases.
 448   // If we haven't already started shutdown, just dismiss the interstitial.
 449   // We cannot check for enabled() here, because we may have called Disable
 450   // without calling Hide.
 451   if (render_view_host_)
 452     DontProceed();
 453 }
 454
 455 void InterstitialPageImpl::DidNavigate(
 456     RenderViewHost* render_view_host,
 457     const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
 458   // A fast user could have navigated away from the page that triggered the
 459   // interstitial while the interstitial was loading, that would have disabled
 460   // us. In that case we can dismiss ourselves.
 461   if (!enabled()) {
 462     DontProceed();
 463     return;
 464   }
 465   if (PageTransitionCoreTypeIs(params.transition,
 466                                PAGE_TRANSITION_AUTO_SUBFRAME)) {
 467     // No need to handle navigate message from iframe in the interstitial page.
 468     return;
 469   }
 470
 471   // The RenderViewHost has loaded its contents, we can show it now.
 472   if (!controller_->delegate()->IsHidden())
 473     render_view_host_->GetView()->Show();
 474   controller_->delegate()->AttachInterstitialPage(this);
 475
 476   RenderWidgetHostView* rwh_view =
 477       controller_->delegate()->GetRenderViewHost()->GetView();
 478
 479   // The RenderViewHost may already have crashed before we even get here.
 480   if (rwh_view) {
 481     // If the page has focus, focus the interstitial.
 482     if (rwh_view->HasFocus())
 483       Focus();
 484
 485     // Hide the original RVH since we're showing the interstitial instead.
 486     rwh_view->Hide();
 487   }
 488
 489   // Notify the tab we are not loading so the throbber is stopped. It also
 490   // causes a WebContentsObserver::DidStopLoading callback that the
 491   // AutomationProvider (used by the UI tests) expects to consider a navigation
 492   // as complete. Without this, navigating in a UI test to a URL that triggers
 493   // an interstitial would hang.
 494   web_contents_was_loading_ = controller_->delegate()->IsLoading();
 495   controller_->delegate()->SetIsLoading(
 496       controller_->delegate()->GetRenderViewHost(), false, true, NULL);
 497 }
 498
 499 RendererPreferences InterstitialPageImpl::GetRendererPrefs(
 500     BrowserContext* browser_context) const {
 501   delegate_->OverrideRendererPrefs(&renderer_preferences_);
 502   return renderer_preferences_;
 503 }
 504
 505 WebPreferences InterstitialPageImpl::GetWebkitPrefs() {
 506   if (!enabled())
 507     return WebPreferences();
 508
 509   return render_view_host_->GetWebkitPrefs(url_);
 510 }
 511
 512 void InterstitialPageImpl::RenderWidgetDeleted(
 513     RenderWidgetHostImpl* render_widget_host) {
 514   // TODO(creis): Remove this method once we verify the shutdown path is sane.
 515   CHECK(!web_contents_);
 516 }
 517
 518 bool InterstitialPageImpl::PreHandleKeyboardEvent(
 519     const NativeWebKeyboardEvent& event,
 520     bool* is_keyboard_shortcut) {
 521   if (!enabled())
 522     return false;
 523   return render_widget_host_delegate_->PreHandleKeyboardEvent(
 524       event, is_keyboard_shortcut);
 525 }
 526
 527 void InterstitialPageImpl::HandleKeyboardEvent(
 528       const NativeWebKeyboardEvent& event) {
 529   if (enabled())
 530     render_widget_host_delegate_->HandleKeyboardEvent(event);
 531 }
 532
 533 #if defined(OS_WIN)
 534 gfx::NativeViewAccessible
 535 InterstitialPageImpl::GetParentNativeViewAccessible() {
 536   return render_widget_host_delegate_->GetParentNativeViewAccessible();
 537 }
 538 #endif
 539
 540 WebContents* InterstitialPageImpl::web_contents() const {
 541   return web_contents_;
 542 }
 543
 544 RenderViewHost* InterstitialPageImpl::CreateRenderViewHost() {
 545   if (!enabled())
 546     return NULL;
 547
 548   // Interstitial pages don't want to share the session storage so we mint a
 549   // new one.
 550   BrowserContext* browser_context = web_contents()->GetBrowserContext();
 551   scoped_refptr<SiteInstance> site_instance =
 552       SiteInstance::Create(browser_context);
 553   DOMStorageContextWrapper* dom_storage_context =
 554       static_cast<DOMStorageContextWrapper*>(
 555           BrowserContext::GetStoragePartition(
 556               browser_context, site_instance.get())->GetDOMStorageContext());
 557   session_storage_namespace_ =
 558       new SessionStorageNamespaceImpl(dom_storage_context);
 559
 560   // Use the RenderViewHost from our FrameTree.
 561   frame_tree_.root()->render_manager()->Init(
 562       browser_context, site_instance.get(), MSG_ROUTING_NONE, MSG_ROUTING_NONE);
 563   return frame_tree_.root()->current_frame_host()->render_view_host();
 564 }
 565
 566 WebContentsView* InterstitialPageImpl::CreateWebContentsView() {
 567   if (!enabled() || !create_view_)
 568     return NULL;
 569   WebContentsView* wcv =
 570       static_cast<WebContentsImpl*>(web_contents())->GetView();
 571   RenderWidgetHostViewBase* view =
 572       wcv->CreateViewForWidget(render_view_host_);
 573   render_view_host_->SetView(view);
 574   render_view_host_->AllowBindings(BINDINGS_POLICY_DOM_AUTOMATION);
 575
 576   int32 max_page_id = web_contents()->
 577       GetMaxPageIDForSiteInstance(render_view_host_->GetSiteInstance());
 578   render_view_host_->CreateRenderView(base::string16(),
 579                                       MSG_ROUTING_NONE,
 580                                       MSG_ROUTING_NONE,
 581                                       max_page_id,
 582                                       false);
 583   controller_->delegate()->RenderFrameForInterstitialPageCreated(
 584       frame_tree_.root()->current_frame_host());
 585   view->SetSize(web_contents()->GetContainerBounds().size());
 586   // Don't show the interstitial until we have navigated to it.
 587   view->Hide();
 588   return wcv;
 589 }
 590
 591 void InterstitialPageImpl::Proceed() {
 592   // Don't repeat this if we are already shutting down.  We cannot check for
 593   // enabled() here, because we may have called Disable without calling Hide.
 594   if (!render_view_host_)
 595     return;
 596
 597   if (action_taken_ != NO_ACTION) {
 598     NOTREACHED();
 599     return;
 600   }
 601   Disable();
 602   action_taken_ = PROCEED_ACTION;
 603
 604   // Resumes the throbber, if applicable.
 605   if (web_contents_was_loading_)
 606     controller_->delegate()->SetIsLoading(
 607         controller_->delegate()->GetRenderViewHost(), true, true, NULL);
 608
 609   // If this is a new navigation, the old page is going away, so we cancel any
 610   // blocked requests for it.  If it is not a new navigation, then it means the
 611   // interstitial was shown as a result of a resource loading in the page.
 612   // Since the user wants to proceed, we'll let any blocked request go through.
 613   if (new_navigation_)
 614     TakeActionOnResourceDispatcher(CANCEL);
 615   else
 616     TakeActionOnResourceDispatcher(RESUME);
 617
 618   // No need to hide if we are a new navigation, we'll get hidden when the
 619   // navigation is committed.
 620   if (!new_navigation_) {
 621     Hide();
 622     delegate_->OnProceed();
 623     return;
 624   }
 625
 626   delegate_->OnProceed();
 627 }
 628
 629 void InterstitialPageImpl::DontProceed() {
 630   // Don't repeat this if we are already shutting down.  We cannot check for
 631   // enabled() here, because we may have called Disable without calling Hide.
 632   if (!render_view_host_)
 633     return;
 634   DCHECK(action_taken_ != DONT_PROCEED_ACTION);
 635
 636   Disable();
 637   action_taken_ = DONT_PROCEED_ACTION;
 638
 639   // If this is a new navigation, we are returning to the original page, so we
 640   // resume blocked requests for it.  If it is not a new navigation, then it
 641   // means the interstitial was shown as a result of a resource loading in the
 642   // page and we won't return to the original page, so we cancel blocked
 643   // requests in that case.
 644   if (new_navigation_)
 645     TakeActionOnResourceDispatcher(RESUME);
 646   else
 647     TakeActionOnResourceDispatcher(CANCEL);
 648
 649   if (should_discard_pending_nav_entry_) {
 650     // Since no navigation happens we have to discard the transient entry
 651     // explicitely.  Note that by calling DiscardNonCommittedEntries() we also
 652     // discard the pending entry, which is what we want, since the navigation is
 653     // cancelled.
 654     controller_->DiscardNonCommittedEntries();
 655   }
 656
 657   if (reload_on_dont_proceed_)
 658     controller_->Reload(true);
 659
 660   Hide();
 661   delegate_->OnDontProceed();
 662 }
 663
 664 void InterstitialPageImpl::CancelForNavigation() {
 665   // The user is trying to navigate away.  We should unblock the renderer and
 666   // disable the interstitial, but keep it visible until the navigation
 667   // completes.
 668   Disable();
 669   // If this interstitial was shown for a new navigation, allow any navigations
 670   // on the original page to resume (e.g., subresource requests, XHRs, etc).
 671   // Otherwise, cancel the pending, possibly dangerous navigations.
 672   if (new_navigation_)
 673     TakeActionOnResourceDispatcher(RESUME);
 674   else
 675     TakeActionOnResourceDispatcher(CANCEL);
 676 }
 677
 678 void InterstitialPageImpl::SetSize(const gfx::Size& size) {
 679   if (!enabled())
 680     return;
 681 #if !defined(OS_MACOSX)
 682   // When a tab is closed, we might be resized after our view was NULLed
 683   // (typically if there was an info-bar).
 684   if (render_view_host_->GetView())
 685     render_view_host_->GetView()->SetSize(size);
 686 #else
 687   // TODO(port): Does Mac need to SetSize?
 688   NOTIMPLEMENTED();
 689 #endif
 690 }
 691
 692 void InterstitialPageImpl::Focus() {
 693   // Focus the native window.
 694   if (!enabled())
 695     return;
 696   render_view_host_->GetView()->Focus();
 697 }
 698
 699 void InterstitialPageImpl::FocusThroughTabTraversal(bool reverse) {
 700   if (!enabled())
 701     return;
 702   render_view_host_->SetInitialFocus(reverse);
 703 }
 704
 705 RenderWidgetHostView* InterstitialPageImpl::GetView() {
 706   return render_view_host_->GetView();
 707 }
 708
 709 RenderViewHost* InterstitialPageImpl::GetRenderViewHostForTesting() const {
 710   return render_view_host_;
 711 }
 712
 713 #if defined(OS_ANDROID)
 714 RenderViewHost* InterstitialPageImpl::GetRenderViewHost() const {
 715   return render_view_host_;
 716 }
 717 #endif
 718
 719 InterstitialPageDelegate* InterstitialPageImpl::GetDelegateForTesting() {
 720   return delegate_.get();
 721 }
 722
 723 void InterstitialPageImpl::DontCreateViewForTesting() {
 724   create_view_ = false;
 725 }
 726
 727 gfx::Rect InterstitialPageImpl::GetRootWindowResizerRect() const {
 728   return gfx::Rect();
 729 }
 730
 731 void InterstitialPageImpl::CreateNewWindow(
 732     int render_process_id,
 733     int route_id,
 734     int main_frame_route_id,
 735     const ViewHostMsg_CreateWindow_Params& params,
 736     SessionStorageNamespace* session_storage_namespace) {
 737   NOTREACHED() << "InterstitialPage does not support showing popups yet.";
 738 }
 739
 740 void InterstitialPageImpl::CreateNewWidget(int render_process_id,
 741                                            int route_id,
 742                                            blink::WebPopupType popup_type) {
 743   NOTREACHED() << "InterstitialPage does not support showing drop-downs yet.";
 744 }
 745
 746 void InterstitialPageImpl::CreateNewFullscreenWidget(int render_process_id,
 747                                                      int route_id) {
 748   NOTREACHED()
 749       << "InterstitialPage does not support showing full screen popups.";
 750 }
 751
 752 void InterstitialPageImpl::ShowCreatedWindow(int route_id,
 753                                              WindowOpenDisposition disposition,
 754                                              const gfx::Rect& initial_pos,
 755                                              bool user_gesture) {
 756   NOTREACHED() << "InterstitialPage does not support showing popups yet.";
 757 }
 758
 759 void InterstitialPageImpl::ShowCreatedWidget(int route_id,
 760                                              const gfx::Rect& initial_pos) {
 761   NOTREACHED() << "InterstitialPage does not support showing drop-downs yet.";
 762 }
 763
 764 void InterstitialPageImpl::ShowCreatedFullscreenWidget(int route_id) {
 765   NOTREACHED()
 766       << "InterstitialPage does not support showing full screen popups.";
 767 }
 768
 769 SessionStorageNamespace* InterstitialPageImpl::GetSessionStorageNamespace(
 770     SiteInstance* instance) {
 771   return session_storage_namespace_.get();
 772 }
 773
 774 FrameTree* InterstitialPageImpl::GetFrameTree() {
 775   return &frame_tree_;
 776 }
 777
 778 void InterstitialPageImpl::Disable() {
 779   enabled_ = false;
 780 }
 781
 782 void InterstitialPageImpl::Shutdown() {
 783   delete this;
 784 }
 785
 786 void InterstitialPageImpl::OnNavigatingAwayOrTabClosing() {
 787   if (action_taken_ == NO_ACTION) {
 788     // We are navigating away from the interstitial or closing a tab with an
 789     // interstitial.  Default to DontProceed(). We don't just call Hide as
 790     // subclasses will almost certainly override DontProceed to do some work
 791     // (ex: close pending connections).
 792     DontProceed();
 793   } else {
 794     // User decided to proceed and either the navigation was committed or
 795     // the tab was closed before that.
 796     Hide();
 797   }
 798 }
 799
 800 void InterstitialPageImpl::TakeActionOnResourceDispatcher(
 801     ResourceRequestAction action) {
 802   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)) <<
 803       "TakeActionOnResourceDispatcher should be called on the main thread.";
 804
 805   if (action == CANCEL || action == RESUME) {
 806     if (resource_dispatcher_host_notified_)
 807       return;
 808     resource_dispatcher_host_notified_ = true;
 809   }
 810
 811   // The tab might not have a render_view_host if it was closed (in which case,
 812   // we have taken care of the blocked requests when processing
 813   // NOTIFY_RENDER_WIDGET_HOST_DESTROYED.
 814   // Also we need to test there is a ResourceDispatcherHostImpl, as when unit-
 815   // tests we don't have one.
 816   RenderViewHostImpl* rvh = RenderViewHostImpl::FromID(original_child_id_,
 817                                                        original_rvh_id_);
 818   if (!rvh || !ResourceDispatcherHostImpl::Get())
 819     return;
 820
 821   BrowserThread::PostTask(
 822       BrowserThread::IO,
 823       FROM_HERE,
 824       base::Bind(
 825           &ResourceRequestHelper,
 826           ResourceDispatcherHostImpl::Get(),
 827           original_child_id_,
 828           original_rvh_id_,
 829           action));
 830 }
 831
 832 void InterstitialPageImpl::OnDomOperationResponse(
 833     const std::string& json_string,
 834     int automation_id) {
 835   // Needed by test code.
 836   DomOperationNotificationDetails details(json_string, automation_id);
 837   NotificationService::current()->Notify(
 838       NOTIFICATION_DOM_OPERATION_RESPONSE,
 839       Source<WebContents>(web_contents()),
 840       Details<DomOperationNotificationDetails>(&details));
 841
 842   if (!enabled())
 843     return;
 844   delegate_->CommandReceived(details.json);
 845 }
 846
 847
 848 InterstitialPageImpl::InterstitialPageRVHDelegateView::
 849     InterstitialPageRVHDelegateView(InterstitialPageImpl* page)
 850     : interstitial_page_(page) {
 851 }
 852
 853 #if defined(OS_MACOSX) || defined(OS_ANDROID)
 854 void InterstitialPageImpl::InterstitialPageRVHDelegateView::ShowPopupMenu(
 855     const gfx::Rect& bounds,
 856     int item_height,
 857     double item_font_size,
 858     int selected_item,
 859     const std::vector<MenuItem>& items,
 860     bool right_aligned,
 861     bool allow_multiple_selection) {
 862   NOTREACHED() << "InterstitialPage does not support showing popup menus.";
 863 }
 864
 865 void InterstitialPageImpl::InterstitialPageRVHDelegateView::HidePopupMenu() {
 866   NOTREACHED() << "InterstitialPage does not support showing popup menus.";
 867 }
 868 #endif
 869
 870 void InterstitialPageImpl::InterstitialPageRVHDelegateView::StartDragging(
 871     const DropData& drop_data,
 872     WebDragOperationsMask allowed_operations,
 873     const gfx::ImageSkia& image,
 874     const gfx::Vector2d& image_offset,
 875     const DragEventSourceInfo& event_info) {
 876   interstitial_page_->render_view_host_->DragSourceSystemDragEnded();
 877   DVLOG(1) << "InterstitialPage does not support dragging yet.";
 878 }
 879
 880 void InterstitialPageImpl::InterstitialPageRVHDelegateView::UpdateDragCursor(
 881     WebDragOperation) {
 882   NOTREACHED() << "InterstitialPage does not support dragging yet.";
 883 }
 884
 885 void InterstitialPageImpl::InterstitialPageRVHDelegateView::GotFocus() {
 886   WebContents* web_contents = interstitial_page_->web_contents();
 887   if (web_contents && web_contents->GetDelegate())
 888     web_contents->GetDelegate()->WebContentsFocused(web_contents);
 889 }
 890
 891 void InterstitialPageImpl::InterstitialPageRVHDelegateView::TakeFocus(
 892     bool reverse) {
 893   if (!interstitial_page_->web_contents())
 894     return;
 895   WebContentsImpl* web_contents =
 896       static_cast<WebContentsImpl*>(interstitial_page_->web_contents());
 897   if (!web_contents->GetDelegateView())
 898     return;
 899
 900   web_contents->GetDelegateView()->TakeFocus(reverse);
 901 }
 902
 903 void InterstitialPageImpl::InterstitialPageRVHDelegateView::OnFindReply(
 904     int request_id, int number_of_matches, const gfx::Rect& selection_rect,
 905     int active_match_ordinal, bool final_update) {
 906 }
 907
 908 }  // namespace content