interstitial_page_impl.cc revision 010d83a9304c5a91596085d917d248abff47903a 
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
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    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
318void 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
354void InterstitialPageImpl::NavigationEntryCommitted(
355    const LoadCommittedDetails& load_details) {
356  OnNavigatingAwayOrTabClosing();
357}
358
359void InterstitialPageImpl::WebContentsDestroyed() {
360  OnNavigatingAwayOrTabClosing();
361}
362
363bool InterstitialPageImpl::OnMessageReceived(RenderFrameHost* render_frame_host,
364                                             const IPC::Message& message) {
365  return OnMessageReceived(message);
366}
367
368bool InterstitialPageImpl::OnMessageReceived(RenderViewHost* render_view_host,
369                                             const IPC::Message& message) {
370  return OnMessageReceived(message);
371}
372
373bool 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
391void 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
399RenderViewHostDelegateView* InterstitialPageImpl::GetDelegateView() {
400  return rvh_delegate_view_.get();
401}
402
403const GURL& InterstitialPageImpl::GetMainFrameLastCommittedURL() const {
404  return url_;
405}
406
407void 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
419void 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
463void 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
498RendererPreferences InterstitialPageImpl::GetRendererPrefs(
499    BrowserContext* browser_context) const {
500  delegate_->OverrideRendererPrefs(&renderer_preferences_);
501  return renderer_preferences_;
502}
503
504WebPreferences InterstitialPageImpl::GetWebkitPrefs() {
505  if (!enabled())
506    return WebPreferences();
507
508  return render_view_host_->GetWebkitPrefs(url_);
509}
510
511void 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
517bool 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
526void InterstitialPageImpl::HandleKeyboardEvent(
527      const NativeWebKeyboardEvent& event) {
528  if (enabled())
529    render_widget_host_delegate_->HandleKeyboardEvent(event);
530}
531
532#if defined(OS_WIN)
533gfx::NativeViewAccessible
534InterstitialPageImpl::GetParentNativeViewAccessible() {
535  return render_widget_host_delegate_->GetParentNativeViewAccessible();
536}
537#endif
538
539WebContents* InterstitialPageImpl::web_contents() const {
540  return web_contents_;
541}
542
543RenderViewHost* 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
565WebContentsView* 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
589void 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
627void 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
662void 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
676void 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
690void InterstitialPageImpl::Focus() {
691  // Focus the native window.
692  if (!enabled())
693    return;
694  render_view_host_->GetView()->Focus();
695}
696
697void InterstitialPageImpl::FocusThroughTabTraversal(bool reverse) {
698  if (!enabled())
699    return;
700  render_view_host_->SetInitialFocus(reverse);
701}
702
703RenderWidgetHostView* InterstitialPageImpl::GetView() {
704  return render_view_host_->GetView();
705}
706
707RenderViewHost* InterstitialPageImpl::GetRenderViewHostForTesting() const {
708  return render_view_host_;
709}
710
711#if defined(OS_ANDROID)
712RenderViewHost* InterstitialPageImpl::GetRenderViewHost() const {
713  return render_view_host_;
714}
715#endif
716
717InterstitialPageDelegate* InterstitialPageImpl::GetDelegateForTesting() {
718  return delegate_.get();
719}
720
721void InterstitialPageImpl::DontCreateViewForTesting() {
722  create_view_ = false;
723}
724
725gfx::Rect InterstitialPageImpl::GetRootWindowResizerRect() const {
726  return gfx::Rect();
727}
728
729void 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
738void 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
744void InterstitialPageImpl::CreateNewFullscreenWidget(int render_process_id,
745                                                     int route_id) {
746  NOTREACHED()
747      << "InterstitialPage does not support showing full screen popups.";
748}
749
750void 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
757void InterstitialPageImpl::ShowCreatedWidget(int route_id,
758                                             const gfx::Rect& initial_pos) {
759  NOTREACHED() << "InterstitialPage does not support showing drop-downs yet.";
760}
761
762void InterstitialPageImpl::ShowCreatedFullscreenWidget(int route_id) {
763  NOTREACHED()
764      << "InterstitialPage does not support showing full screen popups.";
765}
766
767SessionStorageNamespace* InterstitialPageImpl::GetSessionStorageNamespace(
768    SiteInstance* instance) {
769  return session_storage_namespace_.get();
770}
771
772FrameTree* InterstitialPageImpl::GetFrameTree() {
773  return &frame_tree_;
774}
775
776void InterstitialPageImpl::Disable() {
777  enabled_ = false;
778}
779
780void InterstitialPageImpl::Shutdown() {
781  delete this;
782}
783
784void 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
798void 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
830void 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
846InterstitialPageImpl::InterstitialPageRVHDelegateView::
847    InterstitialPageRVHDelegateView(InterstitialPageImpl* page)
848    : interstitial_page_(page) {
849}
850
851#if defined(OS_MACOSX) || defined(OS_ANDROID)
852void 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
863void InterstitialPageImpl::InterstitialPageRVHDelegateView::HidePopupMenu() {
864  NOTREACHED() << "InterstitialPage does not support showing popup menus.";
865}
866#endif
867
868void 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
878void InterstitialPageImpl::InterstitialPageRVHDelegateView::UpdateDragCursor(
879    WebDragOperation) {
880  NOTREACHED() << "InterstitialPage does not support dragging yet.";
881}
882
883void 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
889void 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
901void 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
907