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/location.h"
  12 #include "base/single_thread_task_runner.h"
  13 #include "base/strings/string_util.h"
  14 #include "base/strings/utf_string_conversions.h"
  15 #include "base/thread_task_runner_handle.h"
  16 #include "base/threading/thread.h"
  17 #include "content/browser/dom_storage/dom_storage_context_wrapper.h"
  18 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
  19 #include "content/browser/frame_host/interstitial_page_navigator_impl.h"
  20 #include "content/browser/frame_host/navigation_controller_impl.h"
  21 #include "content/browser/frame_host/navigation_entry_impl.h"
  22 #include "content/browser/loader/resource_dispatcher_host_impl.h"
  23 #include "content/browser/renderer_host/render_process_host_impl.h"
  24 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
  25 #include "content/browser/renderer_host/render_view_host_factory.h"
  26 #include "content/browser/renderer_host/render_view_host_impl.h"
  27 #include "content/browser/renderer_host/render_widget_host_view_base.h"
  28 #include "content/browser/site_instance_impl.h"
  29 #include "content/browser/web_contents/web_contents_impl.h"
  30 #include "content/browser/web_contents/web_contents_view.h"
  31 #include "content/common/frame_messages.h"
  32 #include "content/common/input_messages.h"
  33 #include "content/common/view_messages.h"
  34 #include "content/public/browser/browser_context.h"
  35 #include "content/public/browser/browser_thread.h"
  36 #include "content/public/browser/content_browser_client.h"
  37 #include "content/public/browser/dom_operation_notification_details.h"
  38 #include "content/public/browser/interstitial_page_delegate.h"
  39 #include "content/public/browser/invalidate_type.h"
  40 #include "content/public/browser/notification_service.h"
  41 #include "content/public/browser/notification_source.h"
  42 #include "content/public/browser/storage_partition.h"
  43 #include "content/public/browser/user_metrics.h"
  44 #include "content/public/browser/web_contents_delegate.h"
  45 #include "content/public/common/bindings_policy.h"
  46 #include "net/base/escape.h"
  47 #include "net/url_request/url_request_context_getter.h"
  48 #include "ui/base/page_transition_types.h"
  49
  50 using blink::WebDragOperation;
  51 using blink::WebDragOperationsMask;
  52
  53 namespace content {
  54 namespace {
  55
  56 void ResourceRequestHelper(ResourceDispatcherHostImpl* rdh,
  57                            int process_id,
  58                            int render_view_host_id,
  59                            ResourceRequestAction action) {
  60   switch (action) {
  61     case BLOCK:
  62       rdh->BlockRequestsForRoute(process_id, render_view_host_id);
  63       break;
  64     case RESUME:
  65       rdh->ResumeBlockedRequestsForRoute(process_id, render_view_host_id);
  66       break;
  67     case CANCEL:
  68       rdh->CancelBlockedRequestsForRoute(process_id, render_view_host_id);
  69       break;
  70     default:
  71       NOTREACHED();
  72   }
  73 }
  74
  75 }  // namespace
  76
  77 class InterstitialPageImpl::InterstitialPageRVHDelegateView
  78   : public RenderViewHostDelegateView {
  79  public:
  80   explicit InterstitialPageRVHDelegateView(InterstitialPageImpl* page);
  81
  82   // RenderViewHostDelegateView implementation:
  83 #if defined(OS_MACOSX) || defined(OS_ANDROID)
  84   void ShowPopupMenu(RenderFrameHost* render_frame_host,
  85                      const gfx::Rect& bounds,
  86                      int item_height,
  87                      double item_font_size,
  88                      int selected_item,
  89                      const std::vector<MenuItem>& items,
  90                      bool right_aligned,
  91                      bool allow_multiple_selection) override;
  92   void HidePopupMenu() override;
  93 #endif
  94   void StartDragging(const DropData& drop_data,
  95                      WebDragOperationsMask operations_allowed,
  96                      const gfx::ImageSkia& image,
  97                      const gfx::Vector2d& image_offset,
  98                      const DragEventSourceInfo& event_info) override;
  99   void UpdateDragCursor(WebDragOperation operation) override;
 100   void GotFocus() override;
 101   void TakeFocus(bool reverse) override;
 102   virtual void OnFindReply(int request_id,
 103                            int number_of_matches,
 104                            const gfx::Rect& selection_rect,
 105                            int active_match_ordinal,
 106                            bool final_update);
 107
 108  private:
 109   InterstitialPageImpl* interstitial_page_;
 110
 111   DISALLOW_COPY_AND_ASSIGN(InterstitialPageRVHDelegateView);
 112 };
 113
 114
 115 // We keep a map of the various blocking pages shown as the UI tests need to
 116 // be able to retrieve them.
 117 typedef std::map<WebContents*, InterstitialPageImpl*> InterstitialPageMap;
 118 static InterstitialPageMap* g_web_contents_to_interstitial_page;
 119
 120 // Initializes g_web_contents_to_interstitial_page in a thread-safe manner.
 121 // Should be called before accessing g_web_contents_to_interstitial_page.
 122 static void InitInterstitialPageMap() {
 123   if (!g_web_contents_to_interstitial_page)
 124     g_web_contents_to_interstitial_page = new InterstitialPageMap;
 125 }
 126
 127 InterstitialPage* InterstitialPage::Create(WebContents* web_contents,
 128                                            bool new_navigation,
 129                                            const GURL& url,
 130                                            InterstitialPageDelegate* delegate) {
 131   return new InterstitialPageImpl(
 132       web_contents,
 133       static_cast<RenderWidgetHostDelegate*>(
 134           static_cast<WebContentsImpl*>(web_contents)),
 135       new_navigation, url, delegate);
 136 }
 137
 138 InterstitialPage* InterstitialPage::GetInterstitialPage(
 139     WebContents* web_contents) {
 140   InitInterstitialPageMap();
 141   InterstitialPageMap::const_iterator iter =
 142       g_web_contents_to_interstitial_page->find(web_contents);
 143   if (iter == g_web_contents_to_interstitial_page->end())
 144     return NULL;
 145
 146   return iter->second;
 147 }
 148
 149 InterstitialPageImpl::InterstitialPageImpl(
 150     WebContents* web_contents,
 151     RenderWidgetHostDelegate* render_widget_host_delegate,
 152     bool new_navigation,
 153     const GURL& url,
 154     InterstitialPageDelegate* delegate)
 155     : underlying_content_observer_(web_contents, this),
 156       web_contents_(web_contents),
 157       controller_(static_cast<NavigationControllerImpl*>(
 158           &web_contents->GetController())),
 159       render_widget_host_delegate_(render_widget_host_delegate),
 160       url_(url),
 161       new_navigation_(new_navigation),
 162       should_discard_pending_nav_entry_(new_navigation),
 163       reload_on_dont_proceed_(false),
 164       enabled_(true),
 165       action_taken_(NO_ACTION),
 166       render_view_host_(NULL),
 167       // TODO(nasko): The InterstitialPageImpl will need to provide its own
 168       // NavigationControllerImpl to the Navigator, which is separate from
 169       // the WebContents one, so we can enforce no navigation policy here.
 170       // While we get the code to a point to do this, pass NULL for it.
 171       // TODO(creis): We will also need to pass delegates for the RVHM as we
 172       // start to use it.
 173       frame_tree_(new InterstitialPageNavigatorImpl(this, controller_),
 174                   this, this, this,
 175                   static_cast<WebContentsImpl*>(web_contents)),
 176       original_child_id_(web_contents->GetRenderProcessHost()->GetID()),
 177       original_rvh_id_(web_contents->GetRenderViewHost()->GetRoutingID()),
 178       should_revert_web_contents_title_(false),
 179       web_contents_was_loading_(false),
 180       resource_dispatcher_host_notified_(false),
 181       rvh_delegate_view_(new InterstitialPageRVHDelegateView(this)),
 182       create_view_(true),
 183       delegate_(delegate),
 184       weak_ptr_factory_(this) {
 185   InitInterstitialPageMap();
 186   // It would be inconsistent to create an interstitial with no new navigation
 187   // (which is the case when the interstitial was triggered by a sub-resource on
 188   // a page) when we have a pending entry (in the process of loading a new top
 189   // frame).
 190   DCHECK(new_navigation || !web_contents->GetController().GetPendingEntry());
 191 }
 192
 193 InterstitialPageImpl::~InterstitialPageImpl() {
 194 }
 195
 196 void InterstitialPageImpl::Show() {
 197   if (!enabled())
 198     return;
 199
 200   // If an interstitial is already showing or about to be shown, close it before
 201   // showing the new one.
 202   // Be careful not to take an action on the old interstitial more than once.
 203   InterstitialPageMap::const_iterator iter =
 204       g_web_contents_to_interstitial_page->find(web_contents_);
 205   if (iter != g_web_contents_to_interstitial_page->end()) {
 206     InterstitialPageImpl* interstitial = iter->second;
 207     if (interstitial->action_taken_ != NO_ACTION) {
 208       interstitial->Hide();
 209     } else {
 210       // If we are currently showing an interstitial page for which we created
 211       // a transient entry and a new interstitial is shown as the result of a
 212       // new browser initiated navigation, then that transient entry has already
 213       // been discarded and a new pending navigation entry created.
 214       // So we should not discard that new pending navigation entry.
 215       // See http://crbug.com/9791
 216       if (new_navigation_ && interstitial->new_navigation_)
 217         interstitial->should_discard_pending_nav_entry_= false;
 218       interstitial->DontProceed();
 219     }
 220   }
 221
 222   // Block the resource requests for the render view host while it is hidden.
 223   TakeActionOnResourceDispatcher(BLOCK);
 224   // We need to be notified when the RenderViewHost is destroyed so we can
 225   // cancel the blocked requests.  We cannot do that on
 226   // NOTIFY_WEB_CONTENTS_DESTROYED as at that point the RenderViewHost has
 227   // already been destroyed.
 228   notification_registrar_.Add(
 229       this, NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED,
 230       Source<RenderWidgetHost>(controller_->delegate()->GetRenderViewHost()));
 231
 232   // Update the g_web_contents_to_interstitial_page map.
 233   iter = g_web_contents_to_interstitial_page->find(web_contents_);
 234   DCHECK(iter == g_web_contents_to_interstitial_page->end());
 235   (*g_web_contents_to_interstitial_page)[web_contents_] = this;
 236
 237   if (new_navigation_) {
 238     scoped_ptr<NavigationEntryImpl> entry =
 239         make_scoped_ptr(new NavigationEntryImpl);
 240     entry->SetURL(url_);
 241     entry->SetVirtualURL(url_);
 242     entry->set_page_type(PAGE_TYPE_INTERSTITIAL);
 243
 244     // Give delegates a chance to set some states on the navigation entry.
 245     delegate_->OverrideEntry(entry.get());
 246
 247     controller_->SetTransientEntry(entry.Pass());
 248
 249     static_cast<WebContentsImpl*>(web_contents_)->DidChangeVisibleSSLState();
 250   }
 251
 252   DCHECK(!render_view_host_);
 253   render_view_host_ = CreateRenderViewHost();
 254   CreateWebContentsView();
 255
 256   std::string data_url = "data:text/html;charset=utf-8," +
 257                          net::EscapePath(delegate_->GetHTMLContents());
 258   frame_tree_.root()->current_frame_host()->NavigateToURL(GURL(data_url));
 259   frame_tree_.root()->current_frame_host()->SetAccessibilityMode(
 260       GetAccessibilityMode());
 261
 262   notification_registrar_.Add(this, NOTIFICATION_NAV_ENTRY_PENDING,
 263       Source<NavigationController>(controller_));
 264 }
 265
 266 void InterstitialPageImpl::Hide() {
 267   // We may have already been hidden, and are just waiting to be deleted.
 268   // We can't check for enabled() here, because some callers have already
 269   // called Disable.
 270   if (!render_view_host_)
 271     return;
 272
 273   Disable();
 274
 275   RenderWidgetHostView* old_view =
 276       controller_->delegate()->GetRenderViewHost()->GetView();
 277   if (controller_->delegate()->GetInterstitialPage() == this &&
 278       old_view &&
 279       !old_view->IsShowing() &&
 280       !controller_->delegate()->IsHidden()) {
 281     // Show the original RVH since we're going away.  Note it might not exist if
 282     // the renderer crashed while the interstitial was showing.
 283     // Note that it is important that we don't call Show() if the view is
 284     // already showing. That would result in bad things (unparented HWND on
 285     // Windows for example) happening.
 286     old_view->Show();
 287   }
 288
 289   // If the focus was on the interstitial, let's keep it to the page.
 290   // (Note that in unit-tests the RVH may not have a view).
 291   if (render_view_host_->GetView() &&
 292       render_view_host_->GetView()->HasFocus() &&
 293       controller_->delegate()->GetRenderViewHost()->GetView()) {
 294     controller_->delegate()->GetRenderViewHost()->GetView()->Focus();
 295   }
 296
 297   // Delete this and call Shutdown on the RVH asynchronously, as we may have
 298   // been called from a RVH delegate method, and we can't delete the RVH out
 299   // from under itself.
 300   base::ThreadTaskRunnerHandle::Get()->PostNonNestableTask(
 301       FROM_HERE, base::Bind(&InterstitialPageImpl::Shutdown,
 302                             weak_ptr_factory_.GetWeakPtr()));
 303   render_view_host_ = NULL;
 304   frame_tree_.root()->ResetForNewProcess();
 305   controller_->delegate()->DetachInterstitialPage();
 306   // Let's revert to the original title if necessary.
 307   NavigationEntry* entry = controller_->GetVisibleEntry();
 308   if (entry && !new_navigation_ && should_revert_web_contents_title_) {
 309     entry->SetTitle(original_web_contents_title_);
 310     controller_->delegate()->NotifyNavigationStateChanged(
 311         INVALIDATE_TYPE_TITLE);
 312   }
 313
 314   InterstitialPageMap::iterator iter =
 315       g_web_contents_to_interstitial_page->find(web_contents_);
 316   DCHECK(iter != g_web_contents_to_interstitial_page->end());
 317   if (iter != g_web_contents_to_interstitial_page->end())
 318     g_web_contents_to_interstitial_page->erase(iter);
 319
 320   // Clear the WebContents pointer, because it may now be deleted.
 321   // This signifies that we are in the process of shutting down.
 322   web_contents_ = NULL;
 323 }
 324
 325 void InterstitialPageImpl::Observe(
 326     int type,
 327     const NotificationSource& source,
 328     const NotificationDetails& details) {
 329   switch (type) {
 330     case NOTIFICATION_NAV_ENTRY_PENDING:
 331       // We are navigating away from the interstitial (the user has typed a URL
 332       // in the location bar or clicked a bookmark).  Make sure clicking on the
 333       // interstitial will have no effect.  Also cancel any blocked requests
 334       // on the ResourceDispatcherHost.  Note that when we get this notification
 335       // the RenderViewHost has not yet navigated so we'll unblock the
 336       // RenderViewHost before the resource request for the new page we are
 337       // navigating arrives in the ResourceDispatcherHost.  This ensures that
 338       // request won't be blocked if the same RenderViewHost was used for the
 339       // new navigation.
 340       Disable();
 341       TakeActionOnResourceDispatcher(CANCEL);
 342       break;
 343     case NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED:
 344       if (action_taken_ == NO_ACTION) {
 345         // The RenderViewHost is being destroyed (as part of the tab being
 346         // closed); make sure we clear the blocked requests.
 347         RenderViewHost* rvh = static_cast<RenderViewHost*>(
 348             static_cast<RenderViewHostImpl*>(
 349                 RenderWidgetHostImpl::From(
 350                     Source<RenderWidgetHost>(source).ptr())));
 351         DCHECK(rvh->GetProcess()->GetID() == original_child_id_ &&
 352                rvh->GetRoutingID() == original_rvh_id_);
 353         TakeActionOnResourceDispatcher(CANCEL);
 354       }
 355       break;
 356     default:
 357       NOTREACHED();
 358   }
 359 }
 360
 361 bool InterstitialPageImpl::OnMessageReceived(RenderFrameHost* render_frame_host,
 362                                              const IPC::Message& message) {
 363   if (render_frame_host->GetRenderViewHost() != render_view_host_) {
 364     DCHECK(!render_view_host_)
 365         << "We expect an interstitial page to have only a single RVH";
 366     return false;
 367   }
 368
 369   bool handled = true;
 370   IPC_BEGIN_MESSAGE_MAP(InterstitialPageImpl, message)
 371     IPC_MESSAGE_HANDLER(FrameHostMsg_DomOperationResponse,
 372                         OnDomOperationResponse)
 373     IPC_MESSAGE_UNHANDLED(handled = false)
 374   IPC_END_MESSAGE_MAP()
 375
 376   return handled;
 377 }
 378
 379 bool InterstitialPageImpl::OnMessageReceived(RenderViewHost* render_view_host,
 380                                              const IPC::Message& message) {
 381   return false;
 382 }
 383
 384 void InterstitialPageImpl::RenderFrameCreated(
 385     RenderFrameHost* render_frame_host) {
 386   // Note this is only for subframes in the interstitial, the notification for
 387   // the main frame happens in RenderViewCreated.
 388   controller_->delegate()->RenderFrameForInterstitialPageCreated(
 389       render_frame_host);
 390 }
 391
 392 void InterstitialPageImpl::UpdateTitle(
 393     RenderFrameHost* render_frame_host,
 394     int32 page_id,
 395     const base::string16& title,
 396     base::i18n::TextDirection title_direction) {
 397   if (!enabled())
 398     return;
 399
 400   RenderViewHost* render_view_host = render_frame_host->GetRenderViewHost();
 401   DCHECK(render_view_host == render_view_host_);
 402   NavigationEntry* entry = controller_->GetVisibleEntry();
 403   if (!entry) {
 404     // There may be no visible entry if no URL has committed (e.g., after
 405     // window.open("")).  InterstitialPages with the new_navigation flag create
 406     // a transient NavigationEntry and thus have a visible entry.  However,
 407     // interstitials can still be created when there is no visible entry.  For
 408     // example, the opener window may inject content into the initial blank
 409     // page, which might trigger a SafeBrowsingBlockingPage.
 410     return;
 411   }
 412
 413   // If this interstitial is shown on an existing navigation entry, we'll need
 414   // to remember its title so we can revert to it when hidden.
 415   if (!new_navigation_ && !should_revert_web_contents_title_) {
 416     original_web_contents_title_ = entry->GetTitle();
 417     should_revert_web_contents_title_ = true;
 418   }
 419   // TODO(evan): make use of title_direction.
 420   // http://code.google.com/p/chromium/issues/detail?id=27094
 421   entry->SetTitle(title);
 422   controller_->delegate()->NotifyNavigationStateChanged(INVALIDATE_TYPE_TITLE);
 423 }
 424
 425 AccessibilityMode InterstitialPageImpl::GetAccessibilityMode() const {
 426   if (web_contents_)
 427     return static_cast<WebContentsImpl*>(web_contents_)->GetAccessibilityMode();
 428   else
 429     return AccessibilityModeOff;
 430 }
 431
 432 void InterstitialPageImpl::Cut() {
 433   FrameTreeNode* focused_node = frame_tree_.GetFocusedFrame();
 434   if (!focused_node)
 435     return;
 436
 437   focused_node->current_frame_host()->Send(
 438       new InputMsg_Cut(focused_node->current_frame_host()->GetRoutingID()));
 439   RecordAction(base::UserMetricsAction("Cut"));
 440 }
 441
 442 void InterstitialPageImpl::Copy() {
 443   FrameTreeNode* focused_node = frame_tree_.GetFocusedFrame();
 444   if (!focused_node)
 445     return;
 446
 447   focused_node->current_frame_host()->Send(
 448       new InputMsg_Copy(focused_node->current_frame_host()->GetRoutingID()));
 449   RecordAction(base::UserMetricsAction("Copy"));
 450 }
 451
 452 void InterstitialPageImpl::Paste() {
 453   FrameTreeNode* focused_node = frame_tree_.GetFocusedFrame();
 454   if (!focused_node)
 455     return;
 456
 457   focused_node->current_frame_host()->Send(
 458       new InputMsg_Paste(focused_node->current_frame_host()->GetRoutingID()));
 459   RecordAction(base::UserMetricsAction("Paste"));
 460 }
 461
 462 void InterstitialPageImpl::SelectAll() {
 463   FrameTreeNode* focused_node = frame_tree_.GetFocusedFrame();
 464   if (!focused_node)
 465     return;
 466
 467   focused_node->current_frame_host()->Send(new InputMsg_SelectAll(
 468       focused_node->current_frame_host()->GetRoutingID()));
 469   RecordAction(base::UserMetricsAction("SelectAll"));
 470 }
 471
 472 RenderViewHostDelegateView* InterstitialPageImpl::GetDelegateView() {
 473   return rvh_delegate_view_.get();
 474 }
 475
 476 const GURL& InterstitialPageImpl::GetMainFrameLastCommittedURL() const {
 477   return url_;
 478 }
 479
 480 void InterstitialPageImpl::RenderViewTerminated(
 481     RenderViewHost* render_view_host,
 482     base::TerminationStatus status,
 483     int error_code) {
 484   // Our renderer died. This should not happen in normal cases.
 485   // If we haven't already started shutdown, just dismiss the interstitial.
 486   // We cannot check for enabled() here, because we may have called Disable
 487   // without calling Hide.
 488   if (render_view_host_)
 489     DontProceed();
 490 }
 491
 492 void InterstitialPageImpl::DidNavigate(
 493     RenderViewHost* render_view_host,
 494     const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
 495   // A fast user could have navigated away from the page that triggered the
 496   // interstitial while the interstitial was loading, that would have disabled
 497   // us. In that case we can dismiss ourselves.
 498   if (!enabled()) {
 499     DontProceed();
 500     return;
 501   }
 502   if (ui::PageTransitionCoreTypeIs(params.transition,
 503                                    ui::PAGE_TRANSITION_AUTO_SUBFRAME)) {
 504     // No need to handle navigate message from iframe in the interstitial page.
 505     return;
 506   }
 507
 508   // The RenderViewHost has loaded its contents, we can show it now.
 509   if (!controller_->delegate()->IsHidden())
 510     render_view_host_->GetView()->Show();
 511   controller_->delegate()->AttachInterstitialPage(this);
 512
 513   RenderWidgetHostView* rwh_view =
 514       controller_->delegate()->GetRenderViewHost()->GetView();
 515
 516   // The RenderViewHost may already have crashed before we even get here.
 517   if (rwh_view) {
 518     // If the page has focus, focus the interstitial.
 519     if (rwh_view->HasFocus())
 520       Focus();
 521
 522     // Hide the original RVH since we're showing the interstitial instead.
 523     rwh_view->Hide();
 524   }
 525
 526   // Notify the tab we are not loading so the throbber is stopped. It also
 527   // causes a WebContentsObserver::DidStopLoading callback that the
 528   // AutomationProvider (used by the UI tests) expects to consider a navigation
 529   // as complete. Without this, navigating in a UI test to a URL that triggers
 530   // an interstitial would hang.
 531   web_contents_was_loading_ = controller_->delegate()->IsLoading();
 532   controller_->delegate()->SetIsLoading(false, true, NULL);
 533 }
 534
 535 RendererPreferences InterstitialPageImpl::GetRendererPrefs(
 536     BrowserContext* browser_context) const {
 537   delegate_->OverrideRendererPrefs(&renderer_preferences_);
 538   return renderer_preferences_;
 539 }
 540
 541 void InterstitialPageImpl::RenderWidgetDeleted(
 542     RenderWidgetHostImpl* render_widget_host) {
 543   // TODO(creis): Remove this method once we verify the shutdown path is sane.
 544   CHECK(!web_contents_);
 545 }
 546
 547 bool InterstitialPageImpl::PreHandleKeyboardEvent(
 548     const NativeWebKeyboardEvent& event,
 549     bool* is_keyboard_shortcut) {
 550   if (!enabled())
 551     return false;
 552   return render_widget_host_delegate_->PreHandleKeyboardEvent(
 553       event, is_keyboard_shortcut);
 554 }
 555
 556 void InterstitialPageImpl::HandleKeyboardEvent(
 557       const NativeWebKeyboardEvent& event) {
 558   if (enabled())
 559     render_widget_host_delegate_->HandleKeyboardEvent(event);
 560 }
 561
 562 #if defined(OS_WIN)
 563 gfx::NativeViewAccessible
 564 InterstitialPageImpl::GetParentNativeViewAccessible() {
 565   if (web_contents_) {
 566     WebContentsImpl* wci = static_cast<WebContentsImpl*>(web_contents_);
 567     return wci->GetParentNativeViewAccessible();
 568   }
 569   return NULL;
 570 }
 571 #endif
 572
 573 WebContents* InterstitialPageImpl::web_contents() const {
 574   return web_contents_;
 575 }
 576
 577 RenderViewHostImpl* InterstitialPageImpl::CreateRenderViewHost() {
 578   if (!enabled())
 579     return NULL;
 580
 581   // Interstitial pages don't want to share the session storage so we mint a
 582   // new one.
 583   BrowserContext* browser_context = web_contents()->GetBrowserContext();
 584   scoped_refptr<SiteInstance> site_instance =
 585       SiteInstance::Create(browser_context);
 586   DOMStorageContextWrapper* dom_storage_context =
 587       static_cast<DOMStorageContextWrapper*>(
 588           BrowserContext::GetStoragePartition(
 589               browser_context, site_instance.get())->GetDOMStorageContext());
 590   session_storage_namespace_ =
 591       new SessionStorageNamespaceImpl(dom_storage_context);
 592
 593   // Use the RenderViewHost from our FrameTree.
 594   frame_tree_.root()->render_manager()->Init(
 595       browser_context, site_instance.get(), MSG_ROUTING_NONE, MSG_ROUTING_NONE);
 596   return frame_tree_.root()->current_frame_host()->render_view_host();
 597 }
 598
 599 WebContentsView* InterstitialPageImpl::CreateWebContentsView() {
 600   if (!enabled() || !create_view_)
 601     return NULL;
 602   WebContentsView* wcv =
 603       static_cast<WebContentsImpl*>(web_contents())->GetView();
 604   RenderWidgetHostViewBase* view =
 605       wcv->CreateViewForWidget(render_view_host_, false);
 606   render_view_host_->SetView(view);
 607   render_view_host_->AllowBindings(BINDINGS_POLICY_DOM_AUTOMATION);
 608
 609   int32 max_page_id = web_contents()->
 610       GetMaxPageIDForSiteInstance(render_view_host_->GetSiteInstance());
 611   render_view_host_->CreateRenderView(MSG_ROUTING_NONE,
 612                                       MSG_ROUTING_NONE,
 613                                       max_page_id,
 614                                       FrameReplicationState(),
 615                                       false);
 616   controller_->delegate()->RenderFrameForInterstitialPageCreated(
 617       frame_tree_.root()->current_frame_host());
 618   view->SetSize(web_contents()->GetContainerBounds().size());
 619   // Don't show the interstitial until we have navigated to it.
 620   view->Hide();
 621   return wcv;
 622 }
 623
 624 void InterstitialPageImpl::Proceed() {
 625   // Don't repeat this if we are already shutting down.  We cannot check for
 626   // enabled() here, because we may have called Disable without calling Hide.
 627   if (!render_view_host_)
 628     return;
 629
 630   if (action_taken_ != NO_ACTION) {
 631     NOTREACHED();
 632     return;
 633   }
 634   Disable();
 635   action_taken_ = PROCEED_ACTION;
 636
 637   // Resumes the throbber, if applicable.
 638   if (web_contents_was_loading_)
 639     controller_->delegate()->SetIsLoading(true, true, NULL);
 640
 641   // If this is a new navigation, the old page is going away, so we cancel any
 642   // blocked requests for it.  If it is not a new navigation, then it means the
 643   // interstitial was shown as a result of a resource loading in the page.
 644   // Since the user wants to proceed, we'll let any blocked request go through.
 645   if (new_navigation_)
 646     TakeActionOnResourceDispatcher(CANCEL);
 647   else
 648     TakeActionOnResourceDispatcher(RESUME);
 649
 650   // No need to hide if we are a new navigation, we'll get hidden when the
 651   // navigation is committed.
 652   if (!new_navigation_) {
 653     Hide();
 654     delegate_->OnProceed();
 655     return;
 656   }
 657
 658   delegate_->OnProceed();
 659 }
 660
 661 void InterstitialPageImpl::DontProceed() {
 662   // Don't repeat this if we are already shutting down.  We cannot check for
 663   // enabled() here, because we may have called Disable without calling Hide.
 664   if (!render_view_host_)
 665     return;
 666   DCHECK(action_taken_ != DONT_PROCEED_ACTION);
 667
 668   Disable();
 669   action_taken_ = DONT_PROCEED_ACTION;
 670
 671   // If this is a new navigation, we are returning to the original page, so we
 672   // resume blocked requests for it.  If it is not a new navigation, then it
 673   // means the interstitial was shown as a result of a resource loading in the
 674   // page and we won't return to the original page, so we cancel blocked
 675   // requests in that case.
 676   if (new_navigation_)
 677     TakeActionOnResourceDispatcher(RESUME);
 678   else
 679     TakeActionOnResourceDispatcher(CANCEL);
 680
 681   if (should_discard_pending_nav_entry_) {
 682     // Since no navigation happens we have to discard the transient entry
 683     // explicitely.  Note that by calling DiscardNonCommittedEntries() we also
 684     // discard the pending entry, which is what we want, since the navigation is
 685     // cancelled.
 686     controller_->DiscardNonCommittedEntries();
 687   }
 688
 689   if (reload_on_dont_proceed_)
 690     controller_->Reload(true);
 691
 692   Hide();
 693   delegate_->OnDontProceed();
 694 }
 695
 696 void InterstitialPageImpl::CancelForNavigation() {
 697   // The user is trying to navigate away.  We should unblock the renderer and
 698   // disable the interstitial, but keep it visible until the navigation
 699   // completes.
 700   Disable();
 701   // If this interstitial was shown for a new navigation, allow any navigations
 702   // on the original page to resume (e.g., subresource requests, XHRs, etc).
 703   // Otherwise, cancel the pending, possibly dangerous navigations.
 704   if (new_navigation_)
 705     TakeActionOnResourceDispatcher(RESUME);
 706   else
 707     TakeActionOnResourceDispatcher(CANCEL);
 708 }
 709
 710 void InterstitialPageImpl::SetSize(const gfx::Size& size) {
 711   if (!enabled())
 712     return;
 713 #if !defined(OS_MACOSX)
 714   // When a tab is closed, we might be resized after our view was NULLed
 715   // (typically if there was an info-bar).
 716   if (render_view_host_->GetView())
 717     render_view_host_->GetView()->SetSize(size);
 718 #else
 719   // TODO(port): Does Mac need to SetSize?
 720   NOTIMPLEMENTED();
 721 #endif
 722 }
 723
 724 void InterstitialPageImpl::Focus() {
 725   // Focus the native window.
 726   if (!enabled())
 727     return;
 728   render_view_host_->GetView()->Focus();
 729 }
 730
 731 void InterstitialPageImpl::FocusThroughTabTraversal(bool reverse) {
 732   if (!enabled())
 733     return;
 734   render_view_host_->SetInitialFocus(reverse);
 735 }
 736
 737 RenderWidgetHostView* InterstitialPageImpl::GetView() {
 738   return render_view_host_->GetView();
 739 }
 740
 741 RenderFrameHost* InterstitialPageImpl::GetMainFrame() const {
 742   return render_view_host_->GetMainFrame();
 743 }
 744
 745 InterstitialPageDelegate* InterstitialPageImpl::GetDelegateForTesting() {
 746   return delegate_.get();
 747 }
 748
 749 void InterstitialPageImpl::DontCreateViewForTesting() {
 750   create_view_ = false;
 751 }
 752
 753 gfx::Rect InterstitialPageImpl::GetRootWindowResizerRect() const {
 754   return gfx::Rect();
 755 }
 756
 757 void InterstitialPageImpl::CreateNewWindow(
 758     SiteInstance* source_site_instance,
 759     int route_id,
 760     int main_frame_route_id,
 761     const ViewHostMsg_CreateWindow_Params& params,
 762     SessionStorageNamespace* session_storage_namespace) {
 763   NOTREACHED() << "InterstitialPage does not support showing popups yet.";
 764 }
 765
 766 void InterstitialPageImpl::CreateNewWidget(int render_process_id,
 767                                            int route_id,
 768                                            blink::WebPopupType popup_type) {
 769   NOTREACHED() << "InterstitialPage does not support showing drop-downs yet.";
 770 }
 771
 772 void InterstitialPageImpl::CreateNewFullscreenWidget(int render_process_id,
 773                                                      int route_id) {
 774   NOTREACHED()
 775       << "InterstitialPage does not support showing full screen popups.";
 776 }
 777
 778 void InterstitialPageImpl::ShowCreatedWindow(int route_id,
 779                                              WindowOpenDisposition disposition,
 780                                              const gfx::Rect& initial_rect,
 781                                              bool user_gesture) {
 782   NOTREACHED() << "InterstitialPage does not support showing popups yet.";
 783 }
 784
 785 void InterstitialPageImpl::ShowCreatedWidget(int route_id,
 786                                              const gfx::Rect& initial_rect) {
 787   NOTREACHED() << "InterstitialPage does not support showing drop-downs yet.";
 788 }
 789
 790 void InterstitialPageImpl::ShowCreatedFullscreenWidget(int route_id) {
 791   NOTREACHED()
 792       << "InterstitialPage does not support showing full screen popups.";
 793 }
 794
 795 SessionStorageNamespace* InterstitialPageImpl::GetSessionStorageNamespace(
 796     SiteInstance* instance) {
 797   return session_storage_namespace_.get();
 798 }
 799
 800 FrameTree* InterstitialPageImpl::GetFrameTree() {
 801   return &frame_tree_;
 802 }
 803
 804 void InterstitialPageImpl::Disable() {
 805   enabled_ = false;
 806 }
 807
 808 void InterstitialPageImpl::Shutdown() {
 809   delete this;
 810 }
 811
 812 void InterstitialPageImpl::OnNavigatingAwayOrTabClosing() {
 813   if (action_taken_ == NO_ACTION) {
 814     // We are navigating away from the interstitial or closing a tab with an
 815     // interstitial.  Default to DontProceed(). We don't just call Hide as
 816     // subclasses will almost certainly override DontProceed to do some work
 817     // (ex: close pending connections).
 818     DontProceed();
 819   } else {
 820     // User decided to proceed and either the navigation was committed or
 821     // the tab was closed before that.
 822     Hide();
 823   }
 824 }
 825
 826 void InterstitialPageImpl::TakeActionOnResourceDispatcher(
 827     ResourceRequestAction action) {
 828   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 829
 830   if (action == CANCEL || action == RESUME) {
 831     if (resource_dispatcher_host_notified_)
 832       return;
 833     resource_dispatcher_host_notified_ = true;
 834   }
 835
 836   // The tab might not have a render_view_host if it was closed (in which case,
 837   // we have taken care of the blocked requests when processing
 838   // NOTIFY_RENDER_WIDGET_HOST_DESTROYED.
 839   // Also we need to test there is a ResourceDispatcherHostImpl, as when unit-
 840   // tests we don't have one.
 841   RenderViewHostImpl* rvh = RenderViewHostImpl::FromID(original_child_id_,
 842                                                        original_rvh_id_);
 843   if (!rvh || !ResourceDispatcherHostImpl::Get())
 844     return;
 845
 846   BrowserThread::PostTask(
 847       BrowserThread::IO,
 848       FROM_HERE,
 849       base::Bind(
 850           &ResourceRequestHelper,
 851           ResourceDispatcherHostImpl::Get(),
 852           original_child_id_,
 853           original_rvh_id_,
 854           action));
 855 }
 856
 857 void InterstitialPageImpl::OnDomOperationResponse(
 858     const std::string& json_string,
 859     int automation_id) {
 860   // Needed by test code.
 861   DomOperationNotificationDetails details(json_string, automation_id);
 862   NotificationService::current()->Notify(
 863       NOTIFICATION_DOM_OPERATION_RESPONSE,
 864       Source<WebContents>(web_contents()),
 865       Details<DomOperationNotificationDetails>(&details));
 866
 867   if (!enabled())
 868     return;
 869   delegate_->CommandReceived(details.json);
 870 }
 871
 872
 873 InterstitialPageImpl::InterstitialPageRVHDelegateView::
 874     InterstitialPageRVHDelegateView(InterstitialPageImpl* page)
 875     : interstitial_page_(page) {
 876 }
 877
 878 #if defined(OS_MACOSX) || defined(OS_ANDROID)
 879 void InterstitialPageImpl::InterstitialPageRVHDelegateView::ShowPopupMenu(
 880     RenderFrameHost* render_frame_host,
 881     const gfx::Rect& bounds,
 882     int item_height,
 883     double item_font_size,
 884     int selected_item,
 885     const std::vector<MenuItem>& items,
 886     bool right_aligned,
 887     bool allow_multiple_selection) {
 888   NOTREACHED() << "InterstitialPage does not support showing popup menus.";
 889 }
 890
 891 void InterstitialPageImpl::InterstitialPageRVHDelegateView::HidePopupMenu() {
 892   NOTREACHED() << "InterstitialPage does not support showing popup menus.";
 893 }
 894 #endif
 895
 896 void InterstitialPageImpl::InterstitialPageRVHDelegateView::StartDragging(
 897     const DropData& drop_data,
 898     WebDragOperationsMask allowed_operations,
 899     const gfx::ImageSkia& image,
 900     const gfx::Vector2d& image_offset,
 901     const DragEventSourceInfo& event_info) {
 902   interstitial_page_->render_view_host_->DragSourceSystemDragEnded();
 903   DVLOG(1) << "InterstitialPage does not support dragging yet.";
 904 }
 905
 906 void InterstitialPageImpl::InterstitialPageRVHDelegateView::UpdateDragCursor(
 907     WebDragOperation) {
 908   NOTREACHED() << "InterstitialPage does not support dragging yet.";
 909 }
 910
 911 void InterstitialPageImpl::InterstitialPageRVHDelegateView::GotFocus() {
 912   WebContents* web_contents = interstitial_page_->web_contents();
 913   if (web_contents)
 914     static_cast<WebContentsImpl*>(web_contents)->NotifyWebContentsFocused();
 915 }
 916
 917 void InterstitialPageImpl::InterstitialPageRVHDelegateView::TakeFocus(
 918     bool reverse) {
 919   if (!interstitial_page_->web_contents())
 920     return;
 921   WebContentsImpl* web_contents =
 922       static_cast<WebContentsImpl*>(interstitial_page_->web_contents());
 923   if (!web_contents->GetDelegateView())
 924     return;
 925
 926   web_contents->GetDelegateView()->TakeFocus(reverse);
 927 }
 928
 929 void InterstitialPageImpl::InterstitialPageRVHDelegateView::OnFindReply(
 930     int request_id, int number_of_matches, const gfx::Rect& selection_rect,
 931     int active_match_ordinal, bool final_update) {
 932 }
 933
 934 InterstitialPageImpl::UnderlyingContentObserver::UnderlyingContentObserver(
 935     WebContents* web_contents,
 936     InterstitialPageImpl* interstitial)
 937     : WebContentsObserver(web_contents), interstitial_(interstitial) {
 938 }
 939
 940 void InterstitialPageImpl::UnderlyingContentObserver::NavigationEntryCommitted(
 941     const LoadCommittedDetails& load_details) {
 942   interstitial_->OnNavigatingAwayOrTabClosing();
 943 }
 944
 945 void InterstitialPageImpl::UnderlyingContentObserver::WebContentsDestroyed() {
 946   interstitial_->OnNavigatingAwayOrTabClosing();
 947 }
 948
 949 }  // namespace content