interstitial_page_impl.cc revision 0529e5d033099cbfc42635f6f6183833b09dff6e 
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_factory.h"
23#include "content/browser/renderer_host/render_view_host_impl.h"
24#include "content/browser/site_instance_impl.h"
25#include "content/browser/web_contents/web_contents_impl.h"
26#include "content/common/frame_messages.h"
27#include "content/common/view_messages.h"
28#include "content/port/browser/render_view_host_delegate_view.h"
29#include "content/port/browser/render_widget_host_view_port.h"
30#include "content/port/browser/web_contents_view_port.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
47using blink::WebDragOperation;
48using blink::WebDragOperationsMask;
49
50namespace content {
51namespace {
52
53void 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
74class 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.
113typedef std::map<WebContents*, InterstitialPageImpl*> InterstitialPageMap;
114static 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.
118static void InitInterstitialPageMap() {
119  if (!g_web_contents_to_interstitial_page)
120    g_web_contents_to_interstitial_page = new InterstitialPageMap;
121}
122
123InterstitialPage* 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
134InterstitialPage* 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
145InterstitialPageImpl::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
189InterstitialPageImpl::~InterstitialPageImpl() {
190}
191
192void 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
258void 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    RenderWidgetHostViewPort::FromRWHV(
287        controller_->delegate()->GetRenderViewHost()->GetView())->Focus();
288  }
289
290  // Delete this and call Shutdown on the RVH asynchronously, as we may have
291  // been called from a RVH delegate method, and we can't delete the RVH out
292  // from under itself.
293  base::MessageLoop::current()->PostNonNestableTask(
294      FROM_HERE,
295      base::Bind(&InterstitialPageImpl::Shutdown,
296                 weak_ptr_factory_.GetWeakPtr()));
297  render_view_host_ = NULL;
298  frame_tree_.ResetForMainFrameSwap();
299  controller_->delegate()->DetachInterstitialPage();
300  // Let's revert to the original title if necessary.
301  NavigationEntry* entry = controller_->GetVisibleEntry();
302  if (!new_navigation_ && should_revert_web_contents_title_) {
303    entry->SetTitle(original_web_contents_title_);
304    controller_->delegate()->NotifyNavigationStateChanged(
305        INVALIDATE_TYPE_TITLE);
306  }
307
308  InterstitialPageMap::iterator iter =
309      g_web_contents_to_interstitial_page->find(web_contents_);
310  DCHECK(iter != g_web_contents_to_interstitial_page->end());
311  if (iter != g_web_contents_to_interstitial_page->end())
312    g_web_contents_to_interstitial_page->erase(iter);
313
314  // Clear the WebContents pointer, because it may now be deleted.
315  // This signifies that we are in the process of shutting down.
316  web_contents_ = NULL;
317}
318
319void InterstitialPageImpl::Observe(
320    int type,
321    const NotificationSource& source,
322    const NotificationDetails& details) {
323  switch (type) {
324    case NOTIFICATION_NAV_ENTRY_PENDING:
325      // We are navigating away from the interstitial (the user has typed a URL
326      // in the location bar or clicked a bookmark).  Make sure clicking on the
327      // interstitial will have no effect.  Also cancel any blocked requests
328      // on the ResourceDispatcherHost.  Note that when we get this notification
329      // the RenderViewHost has not yet navigated so we'll unblock the
330      // RenderViewHost before the resource request for the new page we are
331      // navigating arrives in the ResourceDispatcherHost.  This ensures that
332      // request won't be blocked if the same RenderViewHost was used for the
333      // new navigation.
334      Disable();
335      TakeActionOnResourceDispatcher(CANCEL);
336      break;
337    case NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED:
338      if (action_taken_ == NO_ACTION) {
339        // The RenderViewHost is being destroyed (as part of the tab being
340        // closed); make sure we clear the blocked requests.
341        RenderViewHost* rvh = static_cast<RenderViewHost*>(
342            static_cast<RenderViewHostImpl*>(
343                RenderWidgetHostImpl::From(
344                    Source<RenderWidgetHost>(source).ptr())));
345        DCHECK(rvh->GetProcess()->GetID() == original_child_id_ &&
346               rvh->GetRoutingID() == original_rvh_id_);
347        TakeActionOnResourceDispatcher(CANCEL);
348      }
349      break;
350    default:
351      NOTREACHED();
352  }
353}
354
355void InterstitialPageImpl::NavigationEntryCommitted(
356    const LoadCommittedDetails& load_details) {
357  OnNavigatingAwayOrTabClosing();
358}
359
360void InterstitialPageImpl::WebContentsDestroyed(WebContents* web_contents) {
361  OnNavigatingAwayOrTabClosing();
362}
363
364bool InterstitialPageImpl::OnMessageReceived(RenderFrameHost* render_frame_host,
365                                             const IPC::Message& message) {
366  return OnMessageReceived(message);
367}
368
369bool InterstitialPageImpl::OnMessageReceived(RenderViewHost* render_view_host,
370                                             const IPC::Message& message) {
371  return OnMessageReceived(message);
372}
373
374bool InterstitialPageImpl::OnMessageReceived(const IPC::Message& message) {
375
376  bool handled = true;
377  bool message_is_ok = true;
378  IPC_BEGIN_MESSAGE_MAP_EX(InterstitialPageImpl, message, message_is_ok)
379    IPC_MESSAGE_HANDLER(FrameHostMsg_DomOperationResponse,
380                        OnDomOperationResponse)
381    IPC_MESSAGE_UNHANDLED(handled = false)
382  IPC_END_MESSAGE_MAP_EX()
383
384  if (!message_is_ok) {
385    RecordAction(base::UserMetricsAction("BadMessageTerminate_RVD"));
386    web_contents()->GetRenderProcessHost()->ReceivedBadMessage();
387  }
388
389  return handled;
390}
391
392void InterstitialPageImpl::RenderFrameCreated(
393    RenderFrameHost* render_frame_host) {
394  // Note this is only for subframes in the interstitial, the notification for
395  // the main frame happens in RenderViewCreated.
396  controller_->delegate()->RenderFrameForInterstitialPageCreated(
397      render_frame_host);
398}
399
400RenderViewHostDelegateView* InterstitialPageImpl::GetDelegateView() {
401  return rvh_delegate_view_.get();
402}
403
404const GURL& InterstitialPageImpl::GetMainFrameLastCommittedURL() const {
405  return url_;
406}
407
408void InterstitialPageImpl::RenderViewTerminated(
409    RenderViewHost* render_view_host,
410    base::TerminationStatus status,
411    int error_code) {
412  // Our renderer died. This should not happen in normal cases.
413  // If we haven't already started shutdown, just dismiss the interstitial.
414  // We cannot check for enabled() here, because we may have called Disable
415  // without calling Hide.
416  if (render_view_host_)
417    DontProceed();
418}
419
420void InterstitialPageImpl::DidNavigate(
421    RenderViewHost* render_view_host,
422    const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
423  // A fast user could have navigated away from the page that triggered the
424  // interstitial while the interstitial was loading, that would have disabled
425  // us. In that case we can dismiss ourselves.
426  if (!enabled()) {
427    DontProceed();
428    return;
429  }
430  if (PageTransitionCoreTypeIs(params.transition,
431                               PAGE_TRANSITION_AUTO_SUBFRAME)) {
432    // No need to handle navigate message from iframe in the interstitial page.
433    return;
434  }
435
436  // The RenderViewHost has loaded its contents, we can show it now.
437  if (!controller_->delegate()->IsHidden())
438    render_view_host_->GetView()->Show();
439  controller_->delegate()->AttachInterstitialPage(this);
440
441  RenderWidgetHostView* rwh_view =
442      controller_->delegate()->GetRenderViewHost()->GetView();
443
444  // The RenderViewHost may already have crashed before we even get here.
445  if (rwh_view) {
446    // If the page has focus, focus the interstitial.
447    if (rwh_view->HasFocus())
448      Focus();
449
450    // Hide the original RVH since we're showing the interstitial instead.
451    rwh_view->Hide();
452  }
453
454  // Notify the tab we are not loading so the throbber is stopped. It also
455  // causes a WebContentsObserver::DidStopLoading callback that the
456  // AutomationProvider (used by the UI tests) expects to consider a navigation
457  // as complete. Without this, navigating in a UI test to a URL that triggers
458  // an interstitial would hang.
459  web_contents_was_loading_ = controller_->delegate()->IsLoading();
460  controller_->delegate()->SetIsLoading(
461      controller_->delegate()->GetRenderViewHost(), false, true, NULL);
462}
463
464void InterstitialPageImpl::UpdateTitle(
465    RenderViewHost* render_view_host,
466    int32 page_id,
467    const base::string16& title,
468    base::i18n::TextDirection title_direction) {
469  if (!enabled())
470    return;
471
472  DCHECK(render_view_host == render_view_host_);
473  NavigationEntry* entry = controller_->GetVisibleEntry();
474  if (!entry) {
475    // Crash reports from the field indicate this can be NULL.
476    // This is unexpected as InterstitialPages constructed with the
477    // new_navigation flag set to true create a transient navigation entry
478    // (that is returned as the active entry). And the only case so far of
479    // interstitial created with that flag set to false is with the
480    // SafeBrowsingBlockingPage, when the resource triggering the interstitial
481    // is a sub-resource, meaning the main page has already been loaded and a
482    // navigation entry should have been created.
483    NOTREACHED();
484    return;
485  }
486
487  // If this interstitial is shown on an existing navigation entry, we'll need
488  // to remember its title so we can revert to it when hidden.
489  if (!new_navigation_ && !should_revert_web_contents_title_) {
490    original_web_contents_title_ = entry->GetTitle();
491    should_revert_web_contents_title_ = true;
492  }
493  // TODO(evan): make use of title_direction.
494  // http://code.google.com/p/chromium/issues/detail?id=27094
495  entry->SetTitle(title);
496  controller_->delegate()->NotifyNavigationStateChanged(INVALIDATE_TYPE_TITLE);
497}
498
499RendererPreferences InterstitialPageImpl::GetRendererPrefs(
500    BrowserContext* browser_context) const {
501  delegate_->OverrideRendererPrefs(&renderer_preferences_);
502  return renderer_preferences_;
503}
504
505WebPreferences InterstitialPageImpl::GetWebkitPrefs() {
506  if (!enabled())
507    return WebPreferences();
508
509  return render_view_host_->GetWebkitPrefs(url_);
510}
511
512void 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
518bool 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
527void InterstitialPageImpl::HandleKeyboardEvent(
528      const NativeWebKeyboardEvent& event) {
529  if (enabled())
530    render_widget_host_delegate_->HandleKeyboardEvent(event);
531}
532
533#if defined(OS_WIN)
534gfx::NativeViewAccessible
535InterstitialPageImpl::GetParentNativeViewAccessible() {
536  return render_widget_host_delegate_->GetParentNativeViewAccessible();
537}
538#endif
539
540WebContents* InterstitialPageImpl::web_contents() const {
541  return web_contents_;
542}
543
544RenderViewHost* 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
566WebContentsView* InterstitialPageImpl::CreateWebContentsView() {
567  if (!enabled() || !create_view_)
568    return NULL;
569  WebContentsView* web_contents_view = web_contents()->GetView();
570  WebContentsViewPort* web_contents_view_port =
571      static_cast<WebContentsViewPort*>(web_contents_view);
572  RenderWidgetHostView* view =
573      web_contents_view_port->CreateViewForWidget(render_view_host_);
574  render_view_host_->SetView(view);
575  render_view_host_->AllowBindings(BINDINGS_POLICY_DOM_AUTOMATION);
576
577  int32 max_page_id = web_contents()->
578      GetMaxPageIDForSiteInstance(render_view_host_->GetSiteInstance());
579  render_view_host_->CreateRenderView(base::string16(),
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_view->GetContainerSize());
586  // Don't show the interstitial until we have navigated to it.
587  view->Hide();
588  return web_contents_view;
589}
590
591void 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
629void 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
664void 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
678void 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
692void InterstitialPageImpl::Focus() {
693  // Focus the native window.
694  if (!enabled())
695    return;
696  RenderWidgetHostViewPort::FromRWHV(render_view_host_->GetView())->Focus();
697}
698
699void InterstitialPageImpl::FocusThroughTabTraversal(bool reverse) {
700  if (!enabled())
701    return;
702  render_view_host_->SetInitialFocus(reverse);
703}
704
705RenderWidgetHostView* InterstitialPageImpl::GetView() {
706  return render_view_host_->GetView();
707}
708
709RenderViewHost* InterstitialPageImpl::GetRenderViewHostForTesting() const {
710  return render_view_host_;
711}
712
713#if defined(OS_ANDROID)
714RenderViewHost* InterstitialPageImpl::GetRenderViewHost() const {
715  return render_view_host_;
716}
717#endif
718
719InterstitialPageDelegate* InterstitialPageImpl::GetDelegateForTesting() {
720  return delegate_.get();
721}
722
723void InterstitialPageImpl::DontCreateViewForTesting() {
724  create_view_ = false;
725}
726
727gfx::Rect InterstitialPageImpl::GetRootWindowResizerRect() const {
728  return gfx::Rect();
729}
730
731void 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
740void 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
746void InterstitialPageImpl::CreateNewFullscreenWidget(int render_process_id,
747                                                     int route_id) {
748  NOTREACHED()
749      << "InterstitialPage does not support showing full screen popups.";
750}
751
752void 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
759void InterstitialPageImpl::ShowCreatedWidget(int route_id,
760                                             const gfx::Rect& initial_pos) {
761  NOTREACHED() << "InterstitialPage does not support showing drop-downs yet.";
762}
763
764void InterstitialPageImpl::ShowCreatedFullscreenWidget(int route_id) {
765  NOTREACHED()
766      << "InterstitialPage does not support showing full screen popups.";
767}
768
769SessionStorageNamespace* InterstitialPageImpl::GetSessionStorageNamespace(
770    SiteInstance* instance) {
771  return session_storage_namespace_.get();
772}
773
774FrameTree* InterstitialPageImpl::GetFrameTree() {
775  return &frame_tree_;
776}
777
778void InterstitialPageImpl::Disable() {
779  enabled_ = false;
780}
781
782void InterstitialPageImpl::Shutdown() {
783  delete this;
784}
785
786void 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
800void 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
832void 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
848InterstitialPageImpl::InterstitialPageRVHDelegateView::
849    InterstitialPageRVHDelegateView(InterstitialPageImpl* page)
850    : interstitial_page_(page) {
851}
852
853#if defined(OS_MACOSX) || defined(OS_ANDROID)
854void 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
865void InterstitialPageImpl::InterstitialPageRVHDelegateView::HidePopupMenu() {
866  NOTREACHED() << "InterstitialPage does not support showing popup menus.";
867}
868#endif
869
870void 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  NOTREACHED() << "InterstitialPage does not support dragging yet.";
877}
878
879void InterstitialPageImpl::InterstitialPageRVHDelegateView::UpdateDragCursor(
880    WebDragOperation) {
881  NOTREACHED() << "InterstitialPage does not support dragging yet.";
882}
883
884void InterstitialPageImpl::InterstitialPageRVHDelegateView::GotFocus() {
885  WebContents* web_contents = interstitial_page_->web_contents();
886  if (web_contents && web_contents->GetDelegate())
887    web_contents->GetDelegate()->WebContentsFocused(web_contents);
888}
889
890void InterstitialPageImpl::InterstitialPageRVHDelegateView::TakeFocus(
891    bool reverse) {
892  if (!interstitial_page_->web_contents())
893    return;
894  WebContentsImpl* web_contents =
895      static_cast<WebContentsImpl*>(interstitial_page_->web_contents());
896  if (!web_contents->GetDelegateView())
897    return;
898
899  web_contents->GetDelegateView()->TakeFocus(reverse);
900}
901
902void InterstitialPageImpl::InterstitialPageRVHDelegateView::OnFindReply(
903    int request_id, int number_of_matches, const gfx::Rect& selection_rect,
904    int active_match_ordinal, bool final_update) {
905}
906
907}  // namespace content
908