content/browser/browser_plugin/browser_plugin_guest.cc

   1 // Copyright (c) 2012 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/browser_plugin/browser_plugin_guest.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/message_loop/message_loop.h"
  10 #include "base/pickle.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "content/browser/browser_plugin/browser_plugin_embedder.h"
  13 #include "content/browser/browser_thread_impl.h"
  14 #include "content/browser/child_process_security_policy_impl.h"
  15 #include "content/browser/frame_host/render_frame_host_impl.h"
  16 #include "content/browser/frame_host/render_widget_host_view_guest.h"
  17 #include "content/browser/loader/resource_dispatcher_host_impl.h"
  18 #include "content/browser/renderer_host/render_view_host_impl.h"
  19 #include "content/browser/renderer_host/render_widget_host_impl.h"
  20 #include "content/browser/renderer_host/render_widget_host_view_base.h"
  21 #include "content/browser/web_contents/web_contents_impl.h"
  22 #include "content/browser/web_contents/web_contents_view_guest.h"
  23 #include "content/common/browser_plugin/browser_plugin_constants.h"
  24 #include "content/common/browser_plugin/browser_plugin_messages.h"
  25 #include "content/common/content_constants_internal.h"
  26 #include "content/common/drag_messages.h"
  27 #include "content/common/frame_messages.h"
  28 #include "content/common/host_shared_bitmap_manager.h"
  29 #include "content/common/input_messages.h"
  30 #include "content/common/view_messages.h"
  31 #include "content/public/browser/browser_context.h"
  32 #include "content/public/browser/browser_plugin_guest_manager.h"
  33 #include "content/public/browser/content_browser_client.h"
  34 #include "content/public/browser/guest_host.h"
  35 #include "content/public/browser/render_widget_host_view.h"
  36 #include "content/public/browser/user_metrics.h"
  37 #include "content/public/browser/web_contents_observer.h"
  38 #include "content/public/common/drop_data.h"
  39 #include "ui/gfx/geometry/size_conversions.h"
  40
  41 #if defined(OS_MACOSX)
  42 #include "content/browser/browser_plugin/browser_plugin_popup_menu_helper_mac.h"
  43 #endif
  44
  45 namespace content {
  46
  47 class BrowserPluginGuest::EmbedderVisibilityObserver
  48     : public WebContentsObserver {
  49  public:
  50   explicit EmbedderVisibilityObserver(BrowserPluginGuest* guest)
  51       : WebContentsObserver(guest->embedder_web_contents()),
  52         browser_plugin_guest_(guest) {
  53   }
  54
  55   ~EmbedderVisibilityObserver() override {}
  56
  57   // WebContentsObserver implementation.
  58   void WasShown() override {
  59     browser_plugin_guest_->EmbedderVisibilityChanged(true);
  60   }
  61
  62   void WasHidden() override {
  63     browser_plugin_guest_->EmbedderVisibilityChanged(false);
  64   }
  65
  66  private:
  67   BrowserPluginGuest* browser_plugin_guest_;
  68
  69   DISALLOW_COPY_AND_ASSIGN(EmbedderVisibilityObserver);
  70 };
  71
  72 BrowserPluginGuest::BrowserPluginGuest(bool has_render_view,
  73                                        WebContentsImpl* web_contents,
  74                                        BrowserPluginGuestDelegate* delegate)
  75     : WebContentsObserver(web_contents),
  76       owner_web_contents_(nullptr),
  77       attached_(false),
  78       browser_plugin_instance_id_(browser_plugin::kInstanceIDNone),
  79       focused_(false),
  80       mouse_locked_(false),
  81       pending_lock_request_(false),
  82       guest_visible_(false),
  83       embedder_visible_(true),
  84       is_full_page_plugin_(false),
  85       has_render_view_(has_render_view),
  86       is_in_destruction_(false),
  87       initialized_(false),
  88       last_text_input_type_(ui::TEXT_INPUT_TYPE_NONE),
  89       last_input_mode_(ui::TEXT_INPUT_MODE_DEFAULT),
  90       last_input_flags_(0),
  91       last_can_compose_inline_(true),
  92       guest_proxy_routing_id_(MSG_ROUTING_NONE),
  93       last_drag_status_(blink::WebDragStatusUnknown),
  94       seen_embedder_system_drag_ended_(false),
  95       seen_embedder_drag_source_ended_at_(false),
  96       delegate_(delegate),
  97       weak_ptr_factory_(this) {
  98   DCHECK(web_contents);
  99   DCHECK(delegate);
 100   RecordAction(base::UserMetricsAction("BrowserPlugin.Guest.Create"));
 101   web_contents->SetBrowserPluginGuest(this);
 102   delegate->SetGuestHost(this);
 103 }
 104
 105 int BrowserPluginGuest::GetGuestProxyRoutingID() {
 106   if (guest_proxy_routing_id_ != MSG_ROUTING_NONE)
 107     return guest_proxy_routing_id_;
 108
 109   // Create a swapped out RenderView for the guest in the embedder renderer
 110   // process, so that the embedder can access the guest's window object.
 111   // On reattachment, we can reuse the same swapped out RenderView because
 112   // the embedder process will always be the same even if the embedder
 113   // WebContents changes.
 114   //
 115   // TODO(fsamuel): Make sure this works for transferring guests across
 116   // owners in different processes. We probably need to clear the
 117   // |guest_proxy_routing_id_| and perform any necessary cleanup on Detach
 118   // to enable this.
 119   SiteInstance* owner_site_instance = owner_web_contents_->GetSiteInstance();
 120   guest_proxy_routing_id_ =
 121       GetWebContents()->CreateSwappedOutRenderView(owner_site_instance);
 122
 123   return guest_proxy_routing_id_;
 124 }
 125
 126 int BrowserPluginGuest::LoadURLWithParams(
 127     const NavigationController::LoadURLParams& load_params) {
 128   GetWebContents()->GetController().LoadURLWithParams(load_params);
 129   return GetGuestProxyRoutingID();
 130 }
 131
 132 void BrowserPluginGuest::SizeContents(const gfx::Size& new_size) {
 133   GetWebContents()->GetView()->SizeContents(new_size);
 134 }
 135
 136 void BrowserPluginGuest::WillDestroy() {
 137   is_in_destruction_ = true;
 138   owner_web_contents_ = nullptr;
 139   attached_ = false;
 140 }
 141
 142 void BrowserPluginGuest::Init() {
 143   if (initialized_)
 144     return;
 145   initialized_ = true;
 146
 147   // TODO(fsamuel): Initiailization prior to attachment should be behind a
 148   // command line flag once we introduce experimental guest types that rely on
 149   // this functionality.
 150   if (!delegate_->CanRunInDetachedState())
 151     return;
 152
 153   WebContentsImpl* owner_web_contents = static_cast<WebContentsImpl*>(
 154       delegate_->GetOwnerWebContents());
 155   owner_web_contents->CreateBrowserPluginEmbedderIfNecessary();
 156   InitInternal(BrowserPluginHostMsg_Attach_Params(), owner_web_contents);
 157 }
 158
 159 base::WeakPtr<BrowserPluginGuest> BrowserPluginGuest::AsWeakPtr() {
 160   return weak_ptr_factory_.GetWeakPtr();
 161 }
 162
 163 void BrowserPluginGuest::SetFocus(RenderWidgetHost* rwh,
 164                                   bool focused,
 165                                   blink::WebFocusType focus_type) {
 166   focused_ = focused;
 167   if (!rwh)
 168     return;
 169
 170   if ((focus_type == blink::WebFocusTypeForward) ||
 171       (focus_type == blink::WebFocusTypeBackward)) {
 172     static_cast<RenderViewHostImpl*>(RenderViewHost::From(rwh))->
 173         SetInitialFocus(focus_type == blink::WebFocusTypeBackward);
 174   }
 175   rwh->Send(new InputMsg_SetFocus(rwh->GetRoutingID(), focused));
 176   if (!focused && mouse_locked_)
 177     OnUnlockMouse();
 178
 179   // Restore the last seen state of text input to the view.
 180   RenderWidgetHostViewBase* rwhv = static_cast<RenderWidgetHostViewBase*>(
 181       rwh->GetView());
 182   SendTextInputTypeChangedToView(rwhv);
 183 }
 184
 185 void BrowserPluginGuest::SetTooltipText(const base::string16& tooltip_text) {
 186   if (tooltip_text == current_tooltip_text_)
 187     return;
 188   current_tooltip_text_ = tooltip_text;
 189
 190   SendMessageToEmbedder(new BrowserPluginMsg_SetTooltipText(
 191       browser_plugin_instance_id_, tooltip_text));
 192 }
 193
 194 bool BrowserPluginGuest::LockMouse(bool allowed) {
 195   if (!attached() || (mouse_locked_ == allowed))
 196     return false;
 197
 198   return embedder_web_contents()->GotResponseToLockMouseRequest(allowed);
 199 }
 200
 201 WebContentsImpl* BrowserPluginGuest::CreateNewGuestWindow(
 202     const WebContents::CreateParams& params) {
 203   WebContentsImpl* new_contents =
 204       static_cast<WebContentsImpl*>(delegate_->CreateNewGuestWindow(params));
 205   DCHECK(new_contents);
 206   return new_contents;
 207 }
 208
 209 bool BrowserPluginGuest::OnMessageReceivedFromEmbedder(
 210     const IPC::Message& message) {
 211   RenderWidgetHostViewGuest* rwhv = static_cast<RenderWidgetHostViewGuest*>(
 212       web_contents()->GetRenderWidgetHostView());
 213   if (rwhv &&
 214       rwhv->OnMessageReceivedFromEmbedder(
 215           message,
 216           static_cast<RenderViewHostImpl*>(
 217               embedder_web_contents()->GetRenderViewHost()))) {
 218     return true;
 219   }
 220
 221   bool handled = true;
 222   IPC_BEGIN_MESSAGE_MAP(BrowserPluginGuest, message)
 223     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_CompositorFrameSwappedACK,
 224                         OnCompositorFrameSwappedACK)
 225     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_Detach, OnDetach)
 226     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_DragStatusUpdate,
 227                         OnDragStatusUpdate)
 228     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_ExecuteEditCommand,
 229                         OnExecuteEditCommand)
 230     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_ExtendSelectionAndDelete,
 231                         OnExtendSelectionAndDelete)
 232     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_ImeConfirmComposition,
 233                         OnImeConfirmComposition)
 234     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_ImeSetComposition,
 235                         OnImeSetComposition)
 236     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_LockMouse_ACK, OnLockMouseAck)
 237     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_ReclaimCompositorResources,
 238                         OnReclaimCompositorResources)
 239     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_SetEditCommandsForNextKeyEvent,
 240                         OnSetEditCommandsForNextKeyEvent)
 241     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_SetFocus, OnSetFocus)
 242     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_SetVisibility, OnSetVisibility)
 243     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_UnlockMouse_ACK, OnUnlockMouseAck)
 244     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_UpdateGeometry, OnUpdateGeometry)
 245     IPC_MESSAGE_UNHANDLED(handled = false)
 246   IPC_END_MESSAGE_MAP()
 247   return handled;
 248 }
 249
 250 void BrowserPluginGuest::InitInternal(
 251     const BrowserPluginHostMsg_Attach_Params& params,
 252     WebContentsImpl* owner_web_contents) {
 253   focused_ = params.focused;
 254   OnSetFocus(browser_plugin::kInstanceIDNone,
 255              focused_,
 256              blink::WebFocusTypeNone);
 257
 258   guest_visible_ = params.visible;
 259   UpdateVisibility();
 260
 261   is_full_page_plugin_ = params.is_full_page_plugin;
 262   guest_window_rect_ = params.view_rect;
 263
 264   if (owner_web_contents_ != owner_web_contents) {
 265     WebContentsViewGuest* new_view =
 266         static_cast<WebContentsViewGuest*>(GetWebContents()->GetView());
 267     if (owner_web_contents_)
 268       new_view->OnGuestDetached(owner_web_contents_->GetView());
 269
 270     // Once a BrowserPluginGuest has an embedder WebContents, it's considered to
 271     // be attached.
 272     owner_web_contents_ = owner_web_contents;
 273     new_view->OnGuestAttached(owner_web_contents_->GetView());
 274   }
 275
 276   RendererPreferences* renderer_prefs =
 277       GetWebContents()->GetMutableRendererPrefs();
 278   std::string guest_user_agent_override = renderer_prefs->user_agent_override;
 279   // Copy renderer preferences (and nothing else) from the embedder's
 280   // WebContents to the guest.
 281   //
 282   // For GTK and Aura this is necessary to get proper renderer configuration
 283   // values for caret blinking interval, colors related to selection and
 284   // focus.
 285   *renderer_prefs = *owner_web_contents_->GetMutableRendererPrefs();
 286   renderer_prefs->user_agent_override = guest_user_agent_override;
 287
 288   // We would like the guest to report changes to frame names so that we can
 289   // update the BrowserPlugin's corresponding 'name' attribute.
 290   // TODO(fsamuel): Remove this once http://crbug.com/169110 is addressed.
 291   renderer_prefs->report_frame_name_changes = true;
 292   // Navigation is disabled in Chrome Apps. We want to make sure guest-initiated
 293   // navigations still continue to function inside the app.
 294   renderer_prefs->browser_handles_all_top_level_requests = false;
 295   // Disable "client blocked" error page for browser plugin.
 296   renderer_prefs->disable_client_blocked_error_page = true;
 297
 298   embedder_visibility_observer_.reset(new EmbedderVisibilityObserver(this));
 299
 300   DCHECK(GetWebContents()->GetRenderViewHost());
 301
 302   // Initialize the device scale factor by calling |NotifyScreenInfoChanged|.
 303   auto render_widget_host =
 304       RenderWidgetHostImpl::From(GetWebContents()->GetRenderViewHost());
 305   render_widget_host->NotifyScreenInfoChanged();
 306
 307   // TODO(chrishtr): this code is wrong. The navigate_on_drag_drop field will
 308   // be reset again the next time preferences are updated.
 309   WebPreferences prefs =
 310       GetWebContents()->GetRenderViewHost()->GetWebkitPreferences();
 311   prefs.navigate_on_drag_drop = false;
 312   GetWebContents()->GetRenderViewHost()->UpdateWebkitPreferences(prefs);
 313 }
 314
 315 BrowserPluginGuest::~BrowserPluginGuest() {
 316 }
 317
 318 // static
 319 BrowserPluginGuest* BrowserPluginGuest::Create(
 320     WebContentsImpl* web_contents,
 321     BrowserPluginGuestDelegate* delegate) {
 322   return new BrowserPluginGuest(
 323       web_contents->opener() != nullptr, web_contents, delegate);
 324 }
 325
 326 // static
 327 bool BrowserPluginGuest::IsGuest(WebContentsImpl* web_contents) {
 328   return web_contents && web_contents->GetBrowserPluginGuest();
 329 }
 330
 331 // static
 332 bool BrowserPluginGuest::IsGuest(RenderViewHostImpl* render_view_host) {
 333   return render_view_host && IsGuest(
 334       static_cast<WebContentsImpl*>(WebContents::FromRenderViewHost(
 335           render_view_host)));
 336 }
 337
 338 RenderWidgetHostView* BrowserPluginGuest::GetOwnerRenderWidgetHostView() {
 339   if (!owner_web_contents_)
 340     return nullptr;
 341   return owner_web_contents_->GetRenderWidgetHostView();
 342 }
 343
 344 void BrowserPluginGuest::UpdateVisibility() {
 345   OnSetVisibility(browser_plugin_instance_id(), visible());
 346 }
 347
 348 BrowserPluginGuestManager*
 349 BrowserPluginGuest::GetBrowserPluginGuestManager() const {
 350   return GetWebContents()->GetBrowserContext()->GetGuestManager();
 351 }
 352
 353 void BrowserPluginGuest::EmbedderVisibilityChanged(bool visible) {
 354   embedder_visible_ = visible;
 355   UpdateVisibility();
 356 }
 357
 358 void BrowserPluginGuest::PointerLockPermissionResponse(bool allow) {
 359   SendMessageToEmbedder(
 360       new BrowserPluginMsg_SetMouseLock(browser_plugin_instance_id(), allow));
 361 }
 362
 363 void BrowserPluginGuest::SwapCompositorFrame(
 364     uint32 output_surface_id,
 365     int host_process_id,
 366     int host_routing_id,
 367     scoped_ptr<cc::CompositorFrame> frame) {
 368   cc::RenderPass* root_pass =
 369       frame->delegated_frame_data->render_pass_list.back();
 370   gfx::Size view_size(gfx::ToFlooredSize(gfx::ScaleSize(
 371       root_pass->output_rect.size(),
 372       1.0f / frame->metadata.device_scale_factor)));
 373
 374   if (last_seen_view_size_ != view_size) {
 375     delegate_->GuestSizeChanged(view_size);
 376     last_seen_view_size_ = view_size;
 377   }
 378
 379   last_pending_frame_.reset(new FrameMsg_CompositorFrameSwapped_Params());
 380   frame->AssignTo(&last_pending_frame_->frame);
 381   last_pending_frame_->output_surface_id = output_surface_id;
 382   last_pending_frame_->producing_route_id = host_routing_id;
 383   last_pending_frame_->producing_host_id = host_process_id;
 384
 385   SendMessageToEmbedder(
 386       new BrowserPluginMsg_CompositorFrameSwapped(
 387           browser_plugin_instance_id(), *last_pending_frame_));
 388 }
 389
 390 void BrowserPluginGuest::SetContentsOpaque(bool opaque) {
 391   SendMessageToEmbedder(
 392       new BrowserPluginMsg_SetContentsOpaque(
 393           browser_plugin_instance_id(), opaque));
 394 }
 395
 396 bool BrowserPluginGuest::Find(int request_id,
 397                               const base::string16& search_text,
 398                               const blink::WebFindOptions& options) {
 399   return delegate_->Find(request_id, search_text, options);
 400 }
 401
 402 bool BrowserPluginGuest::StopFinding(StopFindAction action) {
 403   return delegate_->StopFinding(action);
 404 }
 405
 406 WebContentsImpl* BrowserPluginGuest::GetWebContents() const {
 407   return static_cast<WebContentsImpl*>(web_contents());
 408 }
 409
 410 gfx::Point BrowserPluginGuest::GetScreenCoordinates(
 411     const gfx::Point& relative_position) const {
 412   if (!attached())
 413     return relative_position;
 414
 415   gfx::Point screen_pos(relative_position);
 416   screen_pos += guest_window_rect_.OffsetFromOrigin();
 417   if (embedder_web_contents()->GetBrowserPluginGuest()) {
 418      BrowserPluginGuest* embedder_guest =
 419         embedder_web_contents()->GetBrowserPluginGuest();
 420      screen_pos += embedder_guest->guest_window_rect_.OffsetFromOrigin();
 421   }
 422   return screen_pos;
 423 }
 424
 425 void BrowserPluginGuest::SendMessageToEmbedder(IPC::Message* msg) {
 426   if (!attached()) {
 427     // Some pages such as data URLs, javascript URLs, and about:blank
 428     // do not load external resources and so they load prior to attachment.
 429     // As a result, we must save all these IPCs until attachment and then
 430     // forward them so that the embedder gets a chance to see and process
 431     // the load events.
 432     pending_messages_.push_back(linked_ptr<IPC::Message>(msg));
 433     return;
 434   }
 435   owner_web_contents_->Send(msg);
 436 }
 437
 438 void BrowserPluginGuest::DragSourceEndedAt(int client_x, int client_y,
 439     int screen_x, int screen_y, blink::WebDragOperation operation) {
 440   web_contents()->GetRenderViewHost()->DragSourceEndedAt(client_x, client_y,
 441       screen_x, screen_y, operation);
 442   seen_embedder_drag_source_ended_at_ = true;
 443   EndSystemDragIfApplicable();
 444 }
 445
 446 void BrowserPluginGuest::EndSystemDragIfApplicable() {
 447   // Ideally we'd want either WebDragStatusDrop or WebDragStatusLeave...
 448   // Call guest RVH->DragSourceSystemDragEnded() correctly on the guest where
 449   // the drag was initiated. Calling DragSourceSystemDragEnded() correctly
 450   // means we call it in all cases and also make sure we only call it once.
 451   // This ensures that the input state of the guest stays correct, otherwise
 452   // it will go stale and won't accept any further input events.
 453   //
 454   // The strategy used here to call DragSourceSystemDragEnded() on the RVH
 455   // is when the following conditions are met:
 456   //   a. Embedder has seen SystemDragEnded()
 457   //   b. Embedder has seen DragSourceEndedAt()
 458   //   c. The guest has seen some drag status update other than
 459   //      WebDragStatusUnknown. Note that this step should ideally be done
 460   //      differently: The guest has seen at least one of
 461   //      {WebDragStatusOver, WebDragStatusDrop}. However, if a user drags
 462   //      a source quickly outside of <webview> bounds, then the
 463   //      BrowserPluginGuest never sees any of these drag status updates,
 464   //      there we just check whether we've seen any drag status update or
 465   //      not.
 466   if (last_drag_status_ != blink::WebDragStatusOver &&
 467       seen_embedder_drag_source_ended_at_ && seen_embedder_system_drag_ended_) {
 468     RenderViewHostImpl* guest_rvh = static_cast<RenderViewHostImpl*>(
 469         GetWebContents()->GetRenderViewHost());
 470     guest_rvh->DragSourceSystemDragEnded();
 471     last_drag_status_ = blink::WebDragStatusUnknown;
 472     seen_embedder_system_drag_ended_ = false;
 473     seen_embedder_drag_source_ended_at_ = false;
 474     dragged_url_ = GURL();
 475   }
 476 }
 477
 478 void BrowserPluginGuest::EmbedderSystemDragEnded() {
 479   seen_embedder_system_drag_ended_ = true;
 480   EndSystemDragIfApplicable();
 481 }
 482
 483 void BrowserPluginGuest::SendQueuedMessages() {
 484   if (!attached())
 485     return;
 486
 487   while (!pending_messages_.empty()) {
 488     linked_ptr<IPC::Message> message_ptr = pending_messages_.front();
 489     pending_messages_.pop_front();
 490     SendMessageToEmbedder(message_ptr.release());
 491   }
 492 }
 493
 494 void BrowserPluginGuest::SendTextInputTypeChangedToView(
 495     RenderWidgetHostViewBase* guest_rwhv) {
 496   if (!guest_rwhv)
 497     return;
 498
 499   if (!owner_web_contents_) {
 500     // If we were showing an interstitial, then we can end up here during
 501     // embedder shutdown or when the embedder navigates to a different page.
 502     // The call stack is roughly:
 503     // BrowserPluginGuest::SetFocus()
 504     // content::InterstitialPageImpl::Hide()
 505     // content::InterstitialPageImpl::DontProceed().
 506     //
 507     // TODO(lazyboy): Write a WebUI test once http://crbug.com/463674 is fixed.
 508     return;
 509   }
 510
 511   guest_rwhv->TextInputTypeChanged(last_text_input_type_, last_input_mode_,
 512                                    last_can_compose_inline_, last_input_flags_);
 513   // Enable input method for guest if it's enabled for the embedder.
 514   if (!static_cast<RenderViewHostImpl*>(
 515            owner_web_contents_->GetRenderViewHost())->input_method_active()) {
 516     return;
 517   }
 518   RenderViewHostImpl* guest_rvh =
 519       static_cast<RenderViewHostImpl*>(GetWebContents()->GetRenderViewHost());
 520   guest_rvh->SetInputMethodActive(true);
 521 }
 522
 523 void BrowserPluginGuest::DidCommitProvisionalLoadForFrame(
 524     RenderFrameHost* render_frame_host,
 525     const GURL& url,
 526     ui::PageTransition transition_type) {
 527   RecordAction(base::UserMetricsAction("BrowserPlugin.Guest.DidNavigate"));
 528 }
 529
 530 void BrowserPluginGuest::RenderViewReady() {
 531   RenderViewHost* rvh = GetWebContents()->GetRenderViewHost();
 532   // TODO(fsamuel): Investigate whether it's possible to update state earlier
 533   // here (see http://crbug.com/158151).
 534   Send(new InputMsg_SetFocus(routing_id(), focused_));
 535   UpdateVisibility();
 536
 537   RenderWidgetHostImpl::From(rvh)->set_hung_renderer_delay(
 538       base::TimeDelta::FromMilliseconds(kHungRendererDelayMs));
 539 }
 540
 541 void BrowserPluginGuest::RenderProcessGone(base::TerminationStatus status) {
 542   SendMessageToEmbedder(
 543       new BrowserPluginMsg_GuestGone(browser_plugin_instance_id()));
 544   switch (status) {
 545     case base::TERMINATION_STATUS_PROCESS_WAS_KILLED:
 546       RecordAction(base::UserMetricsAction("BrowserPlugin.Guest.Killed"));
 547       break;
 548     case base::TERMINATION_STATUS_PROCESS_CRASHED:
 549       RecordAction(base::UserMetricsAction("BrowserPlugin.Guest.Crashed"));
 550       break;
 551     case base::TERMINATION_STATUS_ABNORMAL_TERMINATION:
 552       RecordAction(
 553           base::UserMetricsAction("BrowserPlugin.Guest.AbnormalDeath"));
 554       break;
 555     default:
 556       break;
 557   }
 558 }
 559
 560 // static
 561 bool BrowserPluginGuest::ShouldForwardToBrowserPluginGuest(
 562     const IPC::Message& message) {
 563   return (message.type() != BrowserPluginHostMsg_Attach::ID) &&
 564       (IPC_MESSAGE_CLASS(message) == BrowserPluginMsgStart);
 565 }
 566
 567 bool BrowserPluginGuest::OnMessageReceived(const IPC::Message& message) {
 568   bool handled = true;
 569   IPC_BEGIN_MESSAGE_MAP(BrowserPluginGuest, message)
 570     IPC_MESSAGE_HANDLER(InputHostMsg_ImeCancelComposition,
 571                         OnImeCancelComposition)
 572 #if defined(OS_MACOSX) || defined(USE_AURA)
 573     IPC_MESSAGE_HANDLER(InputHostMsg_ImeCompositionRangeChanged,
 574                         OnImeCompositionRangeChanged)
 575 #endif
 576     IPC_MESSAGE_HANDLER(ViewHostMsg_HasTouchEventHandlers,
 577                         OnHasTouchEventHandlers)
 578     IPC_MESSAGE_HANDLER(ViewHostMsg_LockMouse, OnLockMouse)
 579     IPC_MESSAGE_HANDLER(ViewHostMsg_ShowWidget, OnShowWidget)
 580     IPC_MESSAGE_HANDLER(ViewHostMsg_TakeFocus, OnTakeFocus)
 581     IPC_MESSAGE_HANDLER(ViewHostMsg_TextInputTypeChanged,
 582                         OnTextInputTypeChanged)
 583     IPC_MESSAGE_HANDLER(ViewHostMsg_UnlockMouse, OnUnlockMouse)
 584     IPC_MESSAGE_UNHANDLED(handled = false)
 585   IPC_END_MESSAGE_MAP()
 586   return handled;
 587 }
 588
 589 bool BrowserPluginGuest::OnMessageReceived(const IPC::Message& message,
 590                                            RenderFrameHost* render_frame_host) {
 591   // This will eventually be the home for more IPC handlers that depend on
 592   // RenderFrameHost. Until more are moved here, though, the IPC_* macros won't
 593   // compile if there are no handlers for a platform. So we have both #if guards
 594   // around the whole thing (unfortunate but temporary), and #if guards where
 595   // they belong, only around the one IPC handler. TODO(avi): Move more of the
 596   // frame-based handlers to this function and remove the outer #if layer.
 597 #if defined(OS_MACOSX)
 598   bool handled = true;
 599   IPC_BEGIN_MESSAGE_MAP_WITH_PARAM(BrowserPluginGuest, message,
 600                                    render_frame_host)
 601 #if defined(OS_MACOSX)
 602     // MacOS X creates and populates platform-specific select drop-down menus
 603     // whereas other platforms merely create a popup window that the guest
 604     // renderer process paints inside.
 605     IPC_MESSAGE_HANDLER(FrameHostMsg_ShowPopup, OnShowPopup)
 606 #endif
 607     IPC_MESSAGE_UNHANDLED(handled = false)
 608   IPC_END_MESSAGE_MAP()
 609   return handled;
 610 #else
 611   return false;
 612 #endif
 613 }
 614
 615 void BrowserPluginGuest::Attach(
 616     int browser_plugin_instance_id,
 617     WebContentsImpl* embedder_web_contents,
 618     const BrowserPluginHostMsg_Attach_Params& params) {
 619   browser_plugin_instance_id_ = browser_plugin_instance_id;
 620   // If a guest is detaching from one container and attaching to another
 621   // container, then late arriving ACKs may be lost if the mapping from
 622   // |browser_plugin_instance_id| to |guest_instance_id| changes. Thus we
 623   // ensure that we always get new frames on attachment by ACKing the pending
 624   // frame if it's still waiting on the ACK.
 625   if (last_pending_frame_) {
 626     cc::CompositorFrameAck ack;
 627     RenderWidgetHostImpl::SendSwapCompositorFrameAck(
 628         last_pending_frame_->producing_route_id,
 629         last_pending_frame_->output_surface_id,
 630         last_pending_frame_->producing_host_id,
 631         ack);
 632     last_pending_frame_.reset();
 633   }
 634
 635   // The guest is owned by the embedder. Attach is queued up so we cannot
 636   // change embedders before attach completes. If the embedder goes away,
 637   // so does the guest and so we will never call WillAttachComplete because
 638   // we have a weak ptr.
 639   delegate_->WillAttach(embedder_web_contents, browser_plugin_instance_id,
 640                         params.is_full_page_plugin,
 641                         base::Bind(&BrowserPluginGuest::OnWillAttachComplete,
 642                                    weak_ptr_factory_.GetWeakPtr(),
 643                                    embedder_web_contents, params));
 644 }
 645
 646 void BrowserPluginGuest::OnWillAttachComplete(
 647     WebContentsImpl* embedder_web_contents,
 648     const BrowserPluginHostMsg_Attach_Params& params) {
 649   // If a RenderView has already been created for this new window, then we need
 650   // to initialize the browser-side state now so that the RenderFrameHostManager
 651   // does not create a new RenderView on navigation.
 652   if (has_render_view_) {
 653     // This will trigger a callback to RenderViewReady after a round-trip IPC.
 654     static_cast<RenderViewHostImpl*>(
 655         GetWebContents()->GetRenderViewHost())->Init();
 656     WebContentsViewGuest* web_contents_view =
 657         static_cast<WebContentsViewGuest*>(GetWebContents()->GetView());
 658     if (!web_contents()->GetRenderViewHost()->GetView()) {
 659       web_contents_view->CreateViewForWidget(
 660           web_contents()->GetRenderViewHost(), true);
 661     }
 662   }
 663
 664   InitInternal(params, embedder_web_contents);
 665
 666   attached_ = true;
 667   SendQueuedMessages();
 668
 669   delegate_->DidAttach(GetGuestProxyRoutingID());
 670
 671   has_render_view_ = true;
 672
 673   // Enable input method for guest if it's enabled for the embedder.
 674   if (static_cast<RenderViewHostImpl*>(
 675       owner_web_contents_->GetRenderViewHost())->input_method_active()) {
 676     RenderViewHostImpl* guest_rvh = static_cast<RenderViewHostImpl*>(
 677         GetWebContents()->GetRenderViewHost());
 678     guest_rvh->SetInputMethodActive(true);
 679   }
 680
 681   RecordAction(base::UserMetricsAction("BrowserPlugin.Guest.Attached"));
 682 }
 683
 684 void BrowserPluginGuest::OnCompositorFrameSwappedACK(
 685     int browser_plugin_instance_id,
 686     const FrameHostMsg_CompositorFrameSwappedACK_Params& params) {
 687   RenderWidgetHostImpl::SendSwapCompositorFrameAck(params.producing_route_id,
 688                                                    params.output_surface_id,
 689                                                    params.producing_host_id,
 690                                                    params.ack);
 691   last_pending_frame_.reset();
 692 }
 693
 694 void BrowserPluginGuest::OnDetach(int browser_plugin_instance_id) {
 695   if (!attached())
 696     return;
 697
 698   // This tells BrowserPluginGuest to queue up all IPCs to BrowserPlugin until
 699   // it's attached again.
 700   attached_ = false;
 701
 702   delegate_->DidDetach();
 703 }
 704
 705 void BrowserPluginGuest::OnDragStatusUpdate(int browser_plugin_instance_id,
 706                                             blink::WebDragStatus drag_status,
 707                                             const DropData& drop_data,
 708                                             blink::WebDragOperationsMask mask,
 709                                             const gfx::Point& location) {
 710   RenderViewHost* host = GetWebContents()->GetRenderViewHost();
 711   auto embedder = owner_web_contents_->GetBrowserPluginEmbedder();
 712   switch (drag_status) {
 713     case blink::WebDragStatusEnter:
 714       // Only track the URL being dragged over the guest if the link isn't
 715       // coming from the guest.
 716       if (!embedder->DragEnteredGuest(this))
 717         dragged_url_ = drop_data.url;
 718       host->DragTargetDragEnter(drop_data, location, location, mask, 0);
 719       break;
 720     case blink::WebDragStatusOver:
 721       host->DragTargetDragOver(location, location, mask, 0);
 722       break;
 723     case blink::WebDragStatusLeave:
 724       embedder->DragLeftGuest(this);
 725       host->DragTargetDragLeave();
 726       break;
 727     case blink::WebDragStatusDrop:
 728       host->DragTargetDrop(location, location, 0);
 729       if (dragged_url_.is_valid()) {
 730         delegate_->DidDropLink(dragged_url_);
 731         dragged_url_ = GURL();
 732       }
 733       break;
 734     case blink::WebDragStatusUnknown:
 735       NOTREACHED();
 736   }
 737   last_drag_status_ = drag_status;
 738   EndSystemDragIfApplicable();
 739 }
 740
 741 void BrowserPluginGuest::OnExecuteEditCommand(int browser_plugin_instance_id,
 742                                               const std::string& name) {
 743   RenderFrameHost* focused_frame = web_contents()->GetFocusedFrame();
 744   if (!focused_frame)
 745     return;
 746
 747   focused_frame->Send(new InputMsg_ExecuteNoValueEditCommand(
 748       focused_frame->GetRoutingID(), name));
 749 }
 750
 751 void BrowserPluginGuest::OnImeSetComposition(
 752     int browser_plugin_instance_id,
 753     const std::string& text,
 754     const std::vector<blink::WebCompositionUnderline>& underlines,
 755     int selection_start,
 756     int selection_end) {
 757   Send(new InputMsg_ImeSetComposition(routing_id(),
 758                                       base::UTF8ToUTF16(text), underlines,
 759                                       selection_start, selection_end));
 760 }
 761
 762 void BrowserPluginGuest::OnImeConfirmComposition(
 763     int browser_plugin_instance_id,
 764     const std::string& text,
 765     bool keep_selection) {
 766   Send(new InputMsg_ImeConfirmComposition(routing_id(),
 767                                           base::UTF8ToUTF16(text),
 768                                           gfx::Range::InvalidRange(),
 769                                           keep_selection));
 770 }
 771
 772 void BrowserPluginGuest::OnExtendSelectionAndDelete(
 773     int browser_plugin_instance_id,
 774     int before,
 775     int after) {
 776   RenderFrameHostImpl* rfh = static_cast<RenderFrameHostImpl*>(
 777       web_contents()->GetFocusedFrame());
 778   if (rfh)
 779     rfh->ExtendSelectionAndDelete(before, after);
 780 }
 781
 782 void BrowserPluginGuest::OnReclaimCompositorResources(
 783     int browser_plugin_instance_id,
 784     const FrameHostMsg_ReclaimCompositorResources_Params& params) {
 785   RenderWidgetHostImpl::SendReclaimCompositorResources(params.route_id,
 786                                                        params.output_surface_id,
 787                                                        params.renderer_host_id,
 788                                                        params.ack);
 789 }
 790
 791 void BrowserPluginGuest::OnLockMouse(bool user_gesture,
 792                                      bool last_unlocked_by_target,
 793                                      bool privileged) {
 794   if (pending_lock_request_) {
 795     // Immediately reject the lock because only one pointerLock may be active
 796     // at a time.
 797     Send(new ViewMsg_LockMouse_ACK(routing_id(), false));
 798     return;
 799   }
 800
 801   pending_lock_request_ = true;
 802
 803   delegate_->RequestPointerLockPermission(
 804       user_gesture,
 805       last_unlocked_by_target,
 806       base::Bind(&BrowserPluginGuest::PointerLockPermissionResponse,
 807                  weak_ptr_factory_.GetWeakPtr()));
 808 }
 809
 810 void BrowserPluginGuest::OnLockMouseAck(int browser_plugin_instance_id,
 811                                         bool succeeded) {
 812   Send(new ViewMsg_LockMouse_ACK(routing_id(), succeeded));
 813   pending_lock_request_ = false;
 814   if (succeeded)
 815     mouse_locked_ = true;
 816 }
 817
 818 void BrowserPluginGuest::OnSetFocus(int browser_plugin_instance_id,
 819                                     bool focused,
 820                                     blink::WebFocusType focus_type) {
 821   RenderWidgetHostView* rwhv = web_contents()->GetRenderWidgetHostView();
 822   RenderWidgetHost* rwh = rwhv ? rwhv->GetRenderWidgetHost() : nullptr;
 823   SetFocus(rwh, focused, focus_type);
 824 }
 825
 826 void BrowserPluginGuest::OnSetEditCommandsForNextKeyEvent(
 827     int browser_plugin_instance_id,
 828     const std::vector<EditCommand>& edit_commands) {
 829   Send(new InputMsg_SetEditCommandsForNextKeyEvent(routing_id(),
 830                                                    edit_commands));
 831 }
 832
 833 void BrowserPluginGuest::OnSetVisibility(int browser_plugin_instance_id,
 834                                          bool visible) {
 835   guest_visible_ = visible;
 836   if (embedder_visible_ && guest_visible_)
 837     GetWebContents()->WasShown();
 838   else
 839     GetWebContents()->WasHidden();
 840 }
 841
 842 void BrowserPluginGuest::OnUnlockMouse() {
 843   SendMessageToEmbedder(
 844       new BrowserPluginMsg_SetMouseLock(browser_plugin_instance_id(), false));
 845 }
 846
 847 void BrowserPluginGuest::OnUnlockMouseAck(int browser_plugin_instance_id) {
 848   // mouse_locked_ could be false here if the lock attempt was cancelled due
 849   // to window focus, or for various other reasons before the guest was informed
 850   // of the lock's success.
 851   if (mouse_locked_)
 852     Send(new ViewMsg_MouseLockLost(routing_id()));
 853   mouse_locked_ = false;
 854 }
 855
 856 void BrowserPluginGuest::OnUpdateGeometry(int browser_plugin_instance_id,
 857                                           const gfx::Rect& view_rect) {
 858   // The plugin has moved within the embedder without resizing or the
 859   // embedder/container's view rect changing.
 860   guest_window_rect_ = view_rect;
 861   RenderViewHostImpl* rvh = static_cast<RenderViewHostImpl*>(
 862       GetWebContents()->GetRenderViewHost());
 863   if (rvh)
 864     rvh->SendScreenRects();
 865 }
 866
 867 void BrowserPluginGuest::OnHasTouchEventHandlers(bool accept) {
 868   SendMessageToEmbedder(
 869       new BrowserPluginMsg_ShouldAcceptTouchEvents(
 870           browser_plugin_instance_id(), accept));
 871 }
 872
 873 #if defined(OS_MACOSX)
 874 void BrowserPluginGuest::OnShowPopup(
 875     RenderFrameHost* render_frame_host,
 876     const FrameHostMsg_ShowPopup_Params& params) {
 877   gfx::Rect translated_bounds(params.bounds);
 878   translated_bounds.Offset(guest_window_rect_.OffsetFromOrigin());
 879   BrowserPluginPopupMenuHelper popup_menu_helper(
 880       owner_web_contents_->GetRenderViewHost(), render_frame_host);
 881   popup_menu_helper.ShowPopupMenu(translated_bounds,
 882                                   params.item_height,
 883                                   params.item_font_size,
 884                                   params.selected_item,
 885                                   params.popup_items,
 886                                   params.right_aligned,
 887                                   params.allow_multiple_selection);
 888 }
 889 #endif
 890
 891 void BrowserPluginGuest::OnShowWidget(int route_id,
 892                                       const gfx::Rect& initial_rect) {
 893   GetWebContents()->ShowCreatedWidget(route_id, initial_rect);
 894 }
 895
 896 void BrowserPluginGuest::OnTakeFocus(bool reverse) {
 897   SendMessageToEmbedder(
 898       new BrowserPluginMsg_AdvanceFocus(browser_plugin_instance_id(), reverse));
 899 }
 900
 901 void BrowserPluginGuest::OnTextInputTypeChanged(ui::TextInputType type,
 902                                                 ui::TextInputMode input_mode,
 903                                                 bool can_compose_inline,
 904                                                 int flags) {
 905   // Save the state of text input so we can restore it on focus.
 906   last_text_input_type_ = type;
 907   last_input_mode_ = input_mode;
 908   last_input_flags_ = flags;
 909   last_can_compose_inline_ = can_compose_inline;
 910
 911   SendTextInputTypeChangedToView(
 912       static_cast<RenderWidgetHostViewBase*>(
 913           web_contents()->GetRenderWidgetHostView()));
 914 }
 915
 916 void BrowserPluginGuest::OnImeCancelComposition() {
 917   static_cast<RenderWidgetHostViewBase*>(
 918       web_contents()->GetRenderWidgetHostView())->ImeCancelComposition();
 919 }
 920
 921 #if defined(OS_MACOSX) || defined(USE_AURA)
 922 void BrowserPluginGuest::OnImeCompositionRangeChanged(
 923       const gfx::Range& range,
 924       const std::vector<gfx::Rect>& character_bounds) {
 925   static_cast<RenderWidgetHostViewBase*>(
 926       web_contents()->GetRenderWidgetHostView())->ImeCompositionRangeChanged(
 927           range, character_bounds);
 928 }
 929 #endif
 930
 931 }  // namespace content