src/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(RenderFrameHost* render_frame_host,
 364                                              const IPC::Message& message) {
 365   return OnMessageReceived(message);
 366 }
 367
 368 bool InterstitialPageImpl::OnMessageReceived(RenderViewHost* render_view_host,
 369                                              const IPC::Message& message) {
 370   return OnMessageReceived(message);
 371 }
 372
 373 bool InterstitialPageImpl::OnMessageReceived(const IPC::Message& message) {
 374
 375   bool handled = true;
 376   bool message_is_ok = true;
 377   IPC_BEGIN_MESSAGE_MAP_EX(InterstitialPageImpl, message, message_is_ok)
 378     IPC_MESSAGE_HANDLER(FrameHostMsg_DomOperationResponse,
 379                         OnDomOperationResponse)
 380     IPC_MESSAGE_UNHANDLED(handled = false)
 381   IPC_END_MESSAGE_MAP_EX()
 382
 383   if (!message_is_ok) {
 384     RecordAction(base::UserMetricsAction("BadMessageTerminate_RVD"));
 385     web_contents()->GetRenderProcessHost()->ReceivedBadMessage();
 386   }
 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 RenderViewHostDelegateView* InterstitialPageImpl::GetDelegateView() {
 400   return rvh_delegate_view_.get();
 401 }
 402
 403 const GURL& InterstitialPageImpl::GetMainFrameLastCommittedURL() const {
 404   return url_;
 405 }
 406
 407 void InterstitialPageImpl::RenderViewTerminated(
 408     RenderViewHost* render_view_host,
 409     base::TerminationStatus status,
 410     int error_code) {
 411   // Our renderer died. This should not happen in normal cases.
 412   // If we haven't already started shutdown, just dismiss the interstitial.
 413   // We cannot check for enabled() here, because we may have called Disable
 414   // without calling Hide.
 415   if (render_view_host_)
 416     DontProceed();
 417 }
 418
 419 void InterstitialPageImpl::DidNavigate(
 420     RenderViewHost* render_view_host,
 421     const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
 422   // A fast user could have navigated away from the page that triggered the
 423   // interstitial while the interstitial was loading, that would have disabled
 424   // us. In that case we can dismiss ourselves.
 425   if (!enabled()) {
 426     DontProceed();
 427     return;
 428   }
 429   if (PageTransitionCoreTypeIs(params.transition,
 430                                PAGE_TRANSITION_AUTO_SUBFRAME)) {
 431     // No need to handle navigate message from iframe in the interstitial page.
 432     return;
 433   }
 434
 435   // The RenderViewHost has loaded its contents, we can show it now.
 436   if (!controller_->delegate()->IsHidden())
 437     render_view_host_->GetView()->Show();
 438   controller_->delegate()->AttachInterstitialPage(this);
 439
 440   RenderWidgetHostView* rwh_view =
 441       controller_->delegate()->GetRenderViewHost()->GetView();
 442
 443   // The RenderViewHost may already have crashed before we even get here.
 444   if (rwh_view) {
 445     // If the page has focus, focus the interstitial.
 446     if (rwh_view->HasFocus())
 447       Focus();
 448
 449     // Hide the original RVH since we're showing the interstitial instead.
 450     rwh_view->Hide();
 451   }
 452
 453   // Notify the tab we are not loading so the throbber is stopped. It also
 454   // causes a WebContentsObserver::DidStopLoading callback that the
 455   // AutomationProvider (used by the UI tests) expects to consider a navigation
 456   // as complete. Without this, navigating in a UI test to a URL that triggers
 457   // an interstitial would hang.
 458   web_contents_was_loading_ = controller_->delegate()->IsLoading();
 459   controller_->delegate()->SetIsLoading(
 460       controller_->delegate()->GetRenderViewHost(), false, true, NULL);
 461 }
 462
 463 void InterstitialPageImpl::UpdateTitle(
 464     RenderViewHost* render_view_host,
 465     int32 page_id,
 466     const base::string16& title,
 467     base::i18n::TextDirection title_direction) {
 468   if (!enabled())
 469     return;
 470
 471   DCHECK(render_view_host == render_view_host_);
 472   NavigationEntry* entry = controller_->GetVisibleEntry();
 473   if (!entry) {
 474     // Crash reports from the field indicate this can be NULL.
 475     // This is unexpected as InterstitialPages constructed with the
 476     // new_navigation flag set to true create a transient navigation entry
 477     // (that is returned as the active entry). And the only case so far of
 478     // interstitial created with that flag set to false is with the
 479     // SafeBrowsingBlockingPage, when the resource triggering the interstitial
 480     // is a sub-resource, meaning the main page has already been loaded and a
 481     // navigation entry should have been created.
 482     NOTREACHED();
 483     return;
 484   }
 485
 486   // If this interstitial is shown on an existing navigation entry, we'll need
 487   // to remember its title so we can revert to it when hidden.
 488   if (!new_navigation_ && !should_revert_web_contents_title_) {
 489     original_web_contents_title_ = entry->GetTitle();
 490     should_revert_web_contents_title_ = true;
 491   }
 492   // TODO(evan): make use of title_direction.
 493   // http://code.google.com/p/chromium/issues/detail?id=27094
 494   entry->SetTitle(title);
 495   controller_->delegate()->NotifyNavigationStateChanged(INVALIDATE_TYPE_TITLE);
 496 }
 497
 498 RendererPreferences InterstitialPageImpl::GetRendererPrefs(
 499     BrowserContext* browser_context) const {
 500   delegate_->OverrideRendererPrefs(&renderer_preferences_);
 501   return renderer_preferences_;
 502 }
 503
 504 WebPreferences InterstitialPageImpl::GetWebkitPrefs() {
 505   if (!enabled())
 506     return WebPreferences();
 507
 508   return render_view_host_->GetWebkitPrefs(url_);
 509 }
 510
 511 void InterstitialPageImpl::RenderWidgetDeleted(
 512     RenderWidgetHostImpl* render_widget_host) {
 513   // TODO(creis): Remove this method once we verify the shutdown path is sane.
 514   CHECK(!web_contents_);
 515 }
 516
 517 bool InterstitialPageImpl::PreHandleKeyboardEvent(
 518     const NativeWebKeyboardEvent& event,
 519     bool* is_keyboard_shortcut) {
 520   if (!enabled())
 521     return false;
 522   return render_widget_host_delegate_->PreHandleKeyboardEvent(
 523       event, is_keyboard_shortcut);
 524 }
 525
 526 void InterstitialPageImpl::HandleKeyboardEvent(
 527       const NativeWebKeyboardEvent& event) {
 528   if (enabled())
 529     render_widget_host_delegate_->HandleKeyboardEvent(event);
 530 }
 531
 532 #if defined(OS_WIN)
 533 gfx::NativeViewAccessible
 534 InterstitialPageImpl::GetParentNativeViewAccessible() {
 535   return render_widget_host_delegate_->GetParentNativeViewAccessible();
 536 }
 537 #endif
 538
 539 WebContents* InterstitialPageImpl::web_contents() const {
 540   return web_contents_;
 541 }
 542
 543 RenderViewHost* InterstitialPageImpl::CreateRenderViewHost() {
 544   if (!enabled())
 545     return NULL;
 546
 547   // Interstitial pages don't want to share the session storage so we mint a
 548   // new one.
 549   BrowserContext* browser_context = web_contents()->GetBrowserContext();
 550   scoped_refptr<SiteInstance> site_instance =
 551       SiteInstance::Create(browser_context);
 552   DOMStorageContextWrapper* dom_storage_context =
 553       static_cast<DOMStorageContextWrapper*>(
 554           BrowserContext::GetStoragePartition(
 555               browser_context, site_instance.get())->GetDOMStorageContext());
 556   session_storage_namespace_ =
 557       new SessionStorageNamespaceImpl(dom_storage_context);
 558
 559   // Use the RenderViewHost from our FrameTree.
 560   frame_tree_.root()->render_manager()->Init(
 561       browser_context, site_instance.get(), MSG_ROUTING_NONE, MSG_ROUTING_NONE);
 562   return frame_tree_.root()->current_frame_host()->render_view_host();
 563 }
 564
 565 WebContentsView* InterstitialPageImpl::CreateWebContentsView() {
 566   if (!enabled() || !create_view_)
 567     return NULL;
 568   WebContentsView* wcv =
 569       static_cast<WebContentsImpl*>(web_contents())->GetView();
 570   RenderWidgetHostViewBase* view =
 571       wcv->CreateViewForWidget(render_view_host_);
 572   render_view_host_->SetView(view);
 573   render_view_host_->AllowBindings(BINDINGS_POLICY_DOM_AUTOMATION);
 574
 575   int32 max_page_id = web_contents()->
 576       GetMaxPageIDForSiteInstance(render_view_host_->GetSiteInstance());
 577   render_view_host_->CreateRenderView(base::string16(),
 578                                       MSG_ROUTING_NONE,
 579                                       max_page_id,
 580                                       false);
 581   controller_->delegate()->RenderFrameForInterstitialPageCreated(
 582       frame_tree_.root()->current_frame_host());
 583   view->SetSize(web_contents()->GetContainerBounds().size());
 584   // Don't show the interstitial until we have navigated to it.
 585   view->Hide();
 586   return wcv;
 587 }
 588
 589 void InterstitialPageImpl::Proceed() {
 590   // Don't repeat this if we are already shutting down.  We cannot check for
 591   // enabled() here, because we may have called Disable without calling Hide.
 592   if (!render_view_host_)
 593     return;
 594
 595   if (action_taken_ != NO_ACTION) {
 596     NOTREACHED();
 597     return;
 598   }
 599   Disable();
 600   action_taken_ = PROCEED_ACTION;
 601
 602   // Resumes the throbber, if applicable.
 603   if (web_contents_was_loading_)
 604     controller_->delegate()->SetIsLoading(
 605         controller_->delegate()->GetRenderViewHost(), true, true, NULL);
 606
 607   // If this is a new navigation, the old page is going away, so we cancel any
 608   // blocked requests for it.  If it is not a new navigation, then it means the
 609   // interstitial was shown as a result of a resource loading in the page.
 610   // Since the user wants to proceed, we'll let any blocked request go through.
 611   if (new_navigation_)
 612     TakeActionOnResourceDispatcher(CANCEL);
 613   else
 614     TakeActionOnResourceDispatcher(RESUME);
 615
 616   // No need to hide if we are a new navigation, we'll get hidden when the
 617   // navigation is committed.
 618   if (!new_navigation_) {
 619     Hide();
 620     delegate_->OnProceed();
 621     return;
 622   }
 623
 624   delegate_->OnProceed();
 625 }
 626
 627 void InterstitialPageImpl::DontProceed() {
 628   // Don't repeat this if we are already shutting down.  We cannot check for
 629   // enabled() here, because we may have called Disable without calling Hide.
 630   if (!render_view_host_)
 631     return;
 632   DCHECK(action_taken_ != DONT_PROCEED_ACTION);
 633
 634   Disable();
 635   action_taken_ = DONT_PROCEED_ACTION;
 636
 637   // If this is a new navigation, we are returning to the original page, so we
 638   // resume blocked requests for it.  If it is not a new navigation, then it
 639   // means the interstitial was shown as a result of a resource loading in the
 640   // page and we won't return to the original page, so we cancel blocked
 641   // requests in that case.
 642   if (new_navigation_)
 643     TakeActionOnResourceDispatcher(RESUME);
 644   else
 645     TakeActionOnResourceDispatcher(CANCEL);
 646
 647   if (should_discard_pending_nav_entry_) {
 648     // Since no navigation happens we have to discard the transient entry
 649     // explicitely.  Note that by calling DiscardNonCommittedEntries() we also
 650     // discard the pending entry, which is what we want, since the navigation is
 651     // cancelled.
 652     controller_->DiscardNonCommittedEntries();
 653   }
 654
 655   if (reload_on_dont_proceed_)
 656     controller_->Reload(true);
 657
 658   Hide();
 659   delegate_->OnDontProceed();
 660 }
 661
 662 void InterstitialPageImpl::CancelForNavigation() {
 663   // The user is trying to navigate away.  We should unblock the renderer and
 664   // disable the interstitial, but keep it visible until the navigation
 665   // completes.
 666   Disable();
 667   // If this interstitial was shown for a new navigation, allow any navigations
 668   // on the original page to resume (e.g., subresource requests, XHRs, etc).
 669   // Otherwise, cancel the pending, possibly dangerous navigations.
 670   if (new_navigation_)
 671     TakeActionOnResourceDispatcher(RESUME);
 672   else
 673     TakeActionOnResourceDispatcher(CANCEL);
 674 }
 675
 676 void InterstitialPageImpl::SetSize(const gfx::Size& size) {
 677   if (!enabled())
 678     return;
 679 #if !defined(OS_MACOSX)
 680   // When a tab is closed, we might be resized after our view was NULLed
 681   // (typically if there was an info-bar).
 682   if (render_view_host_->GetView())
 683     render_view_host_->GetView()->SetSize(size);
 684 #else
 685   // TODO(port): Does Mac need to SetSize?
 686   NOTIMPLEMENTED();
 687 #endif
 688 }
 689
 690 void InterstitialPageImpl::Focus() {
 691   // Focus the native window.
 692   if (!enabled())
 693     return;
 694   render_view_host_->GetView()->Focus();
 695 }
 696
 697 void InterstitialPageImpl::FocusThroughTabTraversal(bool reverse) {
 698   if (!enabled())
 699     return;
 700   render_view_host_->SetInitialFocus(reverse);
 701 }
 702
 703 RenderWidgetHostView* InterstitialPageImpl::GetView() {
 704   return render_view_host_->GetView();
 705 }
 706
 707 RenderViewHost* InterstitialPageImpl::GetRenderViewHostForTesting() const {
 708   return render_view_host_;
 709 }
 710
 711 #if defined(OS_ANDROID)
 712 RenderViewHost* InterstitialPageImpl::GetRenderViewHost() const {
 713   return render_view_host_;
 714 }
 715 #endif
 716
 717 InterstitialPageDelegate* InterstitialPageImpl::GetDelegateForTesting() {
 718   return delegate_.get();
 719 }
 720
 721 void InterstitialPageImpl::DontCreateViewForTesting() {
 722   create_view_ = false;
 723 }
 724
 725 gfx::Rect InterstitialPageImpl::GetRootWindowResizerRect() const {
 726   return gfx::Rect();
 727 }
 728
 729 void InterstitialPageImpl::CreateNewWindow(
 730     int render_process_id,
 731     int route_id,
 732     int main_frame_route_id,
 733     const ViewHostMsg_CreateWindow_Params& params,
 734     SessionStorageNamespace* session_storage_namespace) {
 735   NOTREACHED() << "InterstitialPage does not support showing popups yet.";
 736 }
 737
 738 void InterstitialPageImpl::CreateNewWidget(int render_process_id,
 739                                            int route_id,
 740                                            blink::WebPopupType popup_type) {
 741   NOTREACHED() << "InterstitialPage does not support showing drop-downs yet.";
 742 }
 743
 744 void InterstitialPageImpl::CreateNewFullscreenWidget(int render_process_id,
 745                                                      int route_id) {
 746   NOTREACHED()
 747       << "InterstitialPage does not support showing full screen popups.";
 748 }
 749
 750 void InterstitialPageImpl::ShowCreatedWindow(int route_id,
 751                                              WindowOpenDisposition disposition,
 752                                              const gfx::Rect& initial_pos,
 753                                              bool user_gesture) {
 754   NOTREACHED() << "InterstitialPage does not support showing popups yet.";
 755 }
 756
 757 void InterstitialPageImpl::ShowCreatedWidget(int route_id,
 758                                              const gfx::Rect& initial_pos) {
 759   NOTREACHED() << "InterstitialPage does not support showing drop-downs yet.";
 760 }
 761
 762 void InterstitialPageImpl::ShowCreatedFullscreenWidget(int route_id) {
 763   NOTREACHED()
 764       << "InterstitialPage does not support showing full screen popups.";
 765 }
 766
 767 SessionStorageNamespace* InterstitialPageImpl::GetSessionStorageNamespace(
 768     SiteInstance* instance) {
 769   return session_storage_namespace_.get();
 770 }
 771
 772 FrameTree* InterstitialPageImpl::GetFrameTree() {
 773   return &frame_tree_;
 774 }
 775
 776 void InterstitialPageImpl::Disable() {
 777   enabled_ = false;
 778 }
 779
 780 void InterstitialPageImpl::Shutdown() {
 781   delete this;
 782 }
 783
 784 void InterstitialPageImpl::OnNavigatingAwayOrTabClosing() {
 785   if (action_taken_ == NO_ACTION) {
 786     // We are navigating away from the interstitial or closing a tab with an
 787     // interstitial.  Default to DontProceed(). We don't just call Hide as
 788     // subclasses will almost certainly override DontProceed to do some work
 789     // (ex: close pending connections).
 790     DontProceed();
 791   } else {
 792     // User decided to proceed and either the navigation was committed or
 793     // the tab was closed before that.
 794     Hide();
 795   }
 796 }
 797
 798 void InterstitialPageImpl::TakeActionOnResourceDispatcher(
 799     ResourceRequestAction action) {
 800   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)) <<
 801       "TakeActionOnResourceDispatcher should be called on the main thread.";
 802
 803   if (action == CANCEL || action == RESUME) {
 804     if (resource_dispatcher_host_notified_)
 805       return;
 806     resource_dispatcher_host_notified_ = true;
 807   }
 808
 809   // The tab might not have a render_view_host if it was closed (in which case,
 810   // we have taken care of the blocked requests when processing
 811   // NOTIFY_RENDER_WIDGET_HOST_DESTROYED.
 812   // Also we need to test there is a ResourceDispatcherHostImpl, as when unit-
 813   // tests we don't have one.
 814   RenderViewHostImpl* rvh = RenderViewHostImpl::FromID(original_child_id_,
 815                                                        original_rvh_id_);
 816   if (!rvh || !ResourceDispatcherHostImpl::Get())
 817     return;
 818
 819   BrowserThread::PostTask(
 820       BrowserThread::IO,
 821       FROM_HERE,
 822       base::Bind(
 823           &ResourceRequestHelper,
 824           ResourceDispatcherHostImpl::Get(),
 825           original_child_id_,
 826           original_rvh_id_,
 827           action));
 828 }
 829
 830 void InterstitialPageImpl::OnDomOperationResponse(
 831     const std::string& json_string,
 832     int automation_id) {
 833   // Needed by test code.
 834   DomOperationNotificationDetails details(json_string, automation_id);
 835   NotificationService::current()->Notify(
 836       NOTIFICATION_DOM_OPERATION_RESPONSE,
 837       Source<WebContents>(web_contents()),
 838       Details<DomOperationNotificationDetails>(&details));
 839
 840   if (!enabled())
 841     return;
 842   delegate_->CommandReceived(details.json);
 843 }
 844
 845
 846 InterstitialPageImpl::InterstitialPageRVHDelegateView::
 847     InterstitialPageRVHDelegateView(InterstitialPageImpl* page)
 848     : interstitial_page_(page) {
 849 }
 850
 851 #if defined(OS_MACOSX) || defined(OS_ANDROID)
 852 void InterstitialPageImpl::InterstitialPageRVHDelegateView::ShowPopupMenu(
 853     const gfx::Rect& bounds,
 854     int item_height,
 855     double item_font_size,
 856     int selected_item,
 857     const std::vector<MenuItem>& items,
 858     bool right_aligned,
 859     bool allow_multiple_selection) {
 860   NOTREACHED() << "InterstitialPage does not support showing popup menus.";
 861 }
 862
 863 void InterstitialPageImpl::InterstitialPageRVHDelegateView::HidePopupMenu() {
 864   NOTREACHED() << "InterstitialPage does not support showing popup menus.";
 865 }
 866 #endif
 867
 868 void InterstitialPageImpl::InterstitialPageRVHDelegateView::StartDragging(
 869     const DropData& drop_data,
 870     WebDragOperationsMask allowed_operations,
 871     const gfx::ImageSkia& image,
 872     const gfx::Vector2d& image_offset,
 873     const DragEventSourceInfo& event_info) {
 874   interstitial_page_->render_view_host_->DragSourceSystemDragEnded();
 875   DVLOG(1) << "InterstitialPage does not support dragging yet.";
 876 }
 877
 878 void InterstitialPageImpl::InterstitialPageRVHDelegateView::UpdateDragCursor(
 879     WebDragOperation) {
 880   NOTREACHED() << "InterstitialPage does not support dragging yet.";
 881 }
 882
 883 void InterstitialPageImpl::InterstitialPageRVHDelegateView::GotFocus() {
 884   WebContents* web_contents = interstitial_page_->web_contents();
 885   if (web_contents && web_contents->GetDelegate())
 886     web_contents->GetDelegate()->WebContentsFocused(web_contents);
 887 }
 888
 889 void InterstitialPageImpl::InterstitialPageRVHDelegateView::TakeFocus(
 890     bool reverse) {
 891   if (!interstitial_page_->web_contents())
 892     return;
 893   WebContentsImpl* web_contents =
 894       static_cast<WebContentsImpl*>(interstitial_page_->web_contents());
 895   if (!web_contents->GetDelegateView())
 896     return;
 897
 898   web_contents->GetDelegateView()->TakeFocus(reverse);
 899 }
 900
 901 void InterstitialPageImpl::InterstitialPageRVHDelegateView::OnFindReply(
 902     int request_id, int number_of_matches, const gfx::Rect& selection_rect,
 903     int active_match_ordinal, bool final_update) {
 904 }
 905
 906 }  // namespace content