atom/browser/api/atom_api_web_contents.cc

   1 // Copyright (c) 2014 GitHub, Inc.
   2 // Use of this source code is governed by the MIT license that can be
   3 // found in the LICENSE file.
   4
   5 #include "atom/browser/api/atom_api_web_contents.h"
   6
   7 #include <set>
   8 #include <string>
   9
  10 #include "atom/browser/api/atom_api_debugger.h"
  11 #include "atom/browser/api/atom_api_session.h"
  12 #include "atom/browser/api/atom_api_window.h"
  13 #include "atom/browser/atom_browser_client.h"
  14 #include "atom/browser/atom_browser_context.h"
  15 #include "atom/browser/atom_browser_main_parts.h"
  16 #include "atom/browser/atom_security_state_model_client.h"
  17 #include "atom/browser/lib/bluetooth_chooser.h"
  18 #include "atom/browser/native_window.h"
  19 #include "atom/browser/net/atom_network_delegate.h"
  20 #include "atom/browser/osr/osr_output_device.h"
  21 #include "atom/browser/osr/osr_render_widget_host_view.h"
  22 #include "atom/browser/osr/osr_web_contents_view.h"
  23 #include "atom/browser/ui/drag_util.h"
  24 #include "atom/browser/web_contents_permission_helper.h"
  25 #include "atom/browser/web_contents_preferences.h"
  26 #include "atom/browser/web_view_guest_delegate.h"
  27 #include "atom/common/api/api_messages.h"
  28 #include "atom/common/api/event_emitter_caller.h"
  29 #include "atom/common/color_util.h"
  30 #include "atom/common/mouse_util.h"
  31 #include "atom/common/native_mate_converters/blink_converter.h"
  32 #include "atom/common/native_mate_converters/callback.h"
  33 #include "atom/common/native_mate_converters/content_converter.h"
  34 #include "atom/common/native_mate_converters/file_path_converter.h"
  35 #include "atom/common/native_mate_converters/gfx_converter.h"
  36 #include "atom/common/native_mate_converters/gurl_converter.h"
  37 #include "atom/common/native_mate_converters/image_converter.h"
  38 #include "atom/common/native_mate_converters/net_converter.h"
  39 #include "atom/common/native_mate_converters/string16_converter.h"
  40 #include "atom/common/native_mate_converters/value_converter.h"
  41 #include "atom/common/options_switches.h"
  42 #include "base/strings/utf_string_conversions.h"
  43 #include "base/threading/thread_task_runner_handle.h"
  44 #include "brightray/browser/inspectable_web_contents.h"
  45 #include "brightray/browser/inspectable_web_contents_view.h"
  46 #include "chrome/browser/printing/print_preview_message_handler.h"
  47 #include "chrome/browser/printing/print_view_manager_basic.h"
  48 #include "content/browser/renderer_host/render_widget_host_impl.h"
  49 #include "content/browser/web_contents/web_contents_impl.h"
  50 #include "content/common/view_messages.h"
  51 #include "content/public/browser/favicon_status.h"
  52 #include "content/public/browser/native_web_keyboard_event.h"
  53 #include "content/public/browser/navigation_details.h"
  54 #include "content/public/browser/navigation_entry.h"
  55 #include "content/public/browser/navigation_handle.h"
  56 #include "content/public/browser/plugin_service.h"
  57 #include "content/public/browser/render_frame_host.h"
  58 #include "content/public/browser/render_process_host.h"
  59 #include "content/public/browser/render_view_host.h"
  60 #include "content/public/browser/render_widget_host.h"
  61 #include "content/public/browser/render_widget_host_view.h"
  62 #include "content/public/browser/resource_request_details.h"
  63 #include "content/public/browser/service_worker_context.h"
  64 #include "content/public/browser/site_instance.h"
  65 #include "content/public/browser/storage_partition.h"
  66 #include "content/public/browser/web_contents.h"
  67 #include "content/public/common/context_menu_params.h"
  68 #include "native_mate/dictionary.h"
  69 #include "native_mate/object_template_builder.h"
  70 #include "net/url_request/url_request_context.h"
  71 #include "third_party/WebKit/public/web/WebFindOptions.h"
  72 #include "third_party/WebKit/public/web/WebInputEvent.h"
  73 #include "ui/display/screen.h"
  74
  75 #if !defined(OS_MACOSX)
  76 #include "ui/aura/window.h"
  77 #endif
  78
  79 #include "atom/common/node_includes.h"
  80
  81 namespace {
  82
  83 struct PrintSettings {
  84   bool silent;
  85   bool print_background;
  86 };
  87
  88 }  // namespace
  89
  90 namespace mate {
  91
  92 template<>
  93 struct Converter<atom::SetSizeParams> {
  94   static bool FromV8(v8::Isolate* isolate,
  95                      v8::Local<v8::Value> val,
  96                      atom::SetSizeParams* out) {
  97     mate::Dictionary params;
  98     if (!ConvertFromV8(isolate, val, &params))
  99       return false;
 100     bool autosize;
 101     if (params.Get("enableAutoSize", &autosize))
 102       out->enable_auto_size.reset(new bool(true));
 103     gfx::Size size;
 104     if (params.Get("min", &size))
 105       out->min_size.reset(new gfx::Size(size));
 106     if (params.Get("max", &size))
 107       out->max_size.reset(new gfx::Size(size));
 108     if (params.Get("normal", &size))
 109       out->normal_size.reset(new gfx::Size(size));
 110     return true;
 111   }
 112 };
 113
 114 template<>
 115 struct Converter<PrintSettings> {
 116   static bool FromV8(v8::Isolate* isolate, v8::Local<v8::Value> val,
 117                      PrintSettings* out) {
 118     mate::Dictionary dict;
 119     if (!ConvertFromV8(isolate, val, &dict))
 120       return false;
 121     dict.Get("silent", &(out->silent));
 122     dict.Get("printBackground", &(out->print_background));
 123     return true;
 124   }
 125 };
 126
 127 template<>
 128 struct Converter<WindowOpenDisposition> {
 129   static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
 130                                    WindowOpenDisposition val) {
 131     std::string disposition = "other";
 132     switch (val) {
 133       case CURRENT_TAB: disposition = "default"; break;
 134       case NEW_FOREGROUND_TAB: disposition = "foreground-tab"; break;
 135       case NEW_BACKGROUND_TAB: disposition = "background-tab"; break;
 136       case NEW_POPUP: case NEW_WINDOW: disposition = "new-window"; break;
 137       case SAVE_TO_DISK: disposition = "save-to-disk"; break;
 138       default: break;
 139     }
 140     return mate::ConvertToV8(isolate, disposition);
 141   }
 142 };
 143
 144 template<>
 145 struct Converter<content::SavePageType> {
 146   static bool FromV8(v8::Isolate* isolate, v8::Local<v8::Value> val,
 147                      content::SavePageType* out) {
 148     std::string save_type;
 149     if (!ConvertFromV8(isolate, val, &save_type))
 150       return false;
 151     save_type = base::ToLowerASCII(save_type);
 152     if (save_type == "htmlonly") {
 153       *out = content::SAVE_PAGE_TYPE_AS_ONLY_HTML;
 154     } else if (save_type == "htmlcomplete") {
 155       *out = content::SAVE_PAGE_TYPE_AS_COMPLETE_HTML;
 156     } else if (save_type == "mhtml") {
 157       *out = content::SAVE_PAGE_TYPE_AS_MHTML;
 158     } else {
 159       return false;
 160     }
 161     return true;
 162   }
 163 };
 164
 165 template<>
 166 struct Converter<atom::api::WebContents::Type> {
 167   static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
 168                                    atom::api::WebContents::Type val) {
 169     using Type = atom::api::WebContents::Type;
 170     std::string type = "";
 171     switch (val) {
 172       case Type::BACKGROUND_PAGE: type = "backgroundPage"; break;
 173       case Type::BROWSER_WINDOW: type = "window"; break;
 174       case Type::REMOTE: type = "remote"; break;
 175       case Type::WEB_VIEW: type = "webview"; break;
 176       case Type::OFF_SCREEN: type = "offscreen"; break;
 177       default: break;
 178     }
 179     return mate::ConvertToV8(isolate, type);
 180   }
 181
 182   static bool FromV8(v8::Isolate* isolate, v8::Local<v8::Value> val,
 183                      atom::api::WebContents::Type* out) {
 184     using Type = atom::api::WebContents::Type;
 185     std::string type;
 186     if (!ConvertFromV8(isolate, val, &type))
 187       return false;
 188     if (type == "webview") {
 189       *out = Type::WEB_VIEW;
 190     } else if (type == "backgroundPage") {
 191       *out = Type::BACKGROUND_PAGE;
 192     } else if (type == "offscreen") {
 193       *out = Type::OFF_SCREEN;
 194     } else {
 195       return false;
 196     }
 197     return true;
 198   }
 199 };
 200
 201 }  // namespace mate
 202
 203
 204 namespace atom {
 205
 206 namespace api {
 207
 208 namespace {
 209
 210 content::ServiceWorkerContext* GetServiceWorkerContext(
 211     const content::WebContents* web_contents) {
 212   auto context = web_contents->GetBrowserContext();
 213   auto site_instance = web_contents->GetSiteInstance();
 214   if (!context || !site_instance)
 215     return nullptr;
 216
 217   auto storage_partition =
 218       content::BrowserContext::GetStoragePartition(context, site_instance);
 219   if (!storage_partition)
 220     return nullptr;
 221
 222   return storage_partition->GetServiceWorkerContext();
 223 }
 224
 225 // Called when CapturePage is done.
 226 void OnCapturePageDone(base::Callback<void(const gfx::Image&)> callback,
 227                        const SkBitmap& bitmap,
 228                        content::ReadbackResponse response) {
 229   callback.Run(gfx::Image::CreateFrom1xBitmap(bitmap));
 230 }
 231
 232 }  // namespace
 233
 234 WebContents::WebContents(v8::Isolate* isolate,
 235                          content::WebContents* web_contents,
 236                          Type type)
 237     : content::WebContentsObserver(web_contents),
 238       embedder_(nullptr),
 239       type_(type),
 240       request_id_(0),
 241       background_throttling_(true),
 242       enable_devtools_(true) {
 243
 244   if (type == REMOTE) {
 245     web_contents->SetUserAgentOverride(GetBrowserContext()->GetUserAgent());
 246     Init(isolate);
 247     AttachAsUserData(web_contents);
 248   } else {
 249     const mate::Dictionary options = mate::Dictionary::CreateEmpty(isolate);
 250     auto session = Session::CreateFrom(isolate, GetBrowserContext());
 251     session_.Reset(isolate, session.ToV8());
 252     InitWithSessionAndOptions(isolate, web_contents, session, options);
 253   }
 254 }
 255
 256 WebContents::WebContents(v8::Isolate* isolate,
 257                          const mate::Dictionary& options)
 258     : embedder_(nullptr),
 259       type_(BROWSER_WINDOW),
 260       request_id_(0),
 261       background_throttling_(true),
 262       enable_devtools_(true) {
 263   // Read options.
 264   options.Get("backgroundThrottling", &background_throttling_);
 265
 266   // FIXME(zcbenz): We should read "type" parameter for better design, but
 267   // on Windows we have encountered a compiler bug that if we read "type"
 268   // from |options| and then set |type_|, a memory corruption will happen
 269   // and Electron will soon crash.
 270   // Remvoe this after we upgraded to use VS 2015 Update 3.
 271   bool b = false;
 272   if (options.Get("isGuest", &b) && b)
 273     type_ = WEB_VIEW;
 274   else if (options.Get("isBackgroundPage", &b) && b)
 275     type_ = BACKGROUND_PAGE;
 276   else if (options.Get("offscreen", &b) && b)
 277     type_ = OFF_SCREEN;
 278
 279   // Whether to enable DevTools.
 280   options.Get("devTools", &enable_devtools_);
 281
 282   // Obtain the session.
 283   std::string partition;
 284   mate::Handle<api::Session> session;
 285   if (options.Get("session", &session)) {
 286   } else if (options.Get("partition", &partition)) {
 287     session = Session::FromPartition(isolate, partition);
 288   } else {
 289     // Use the default session if not specified.
 290     session = Session::FromPartition(isolate, "");
 291   }
 292   session_.Reset(isolate, session.ToV8());
 293
 294   content::WebContents* web_contents;
 295   if (IsGuest()) {
 296     scoped_refptr<content::SiteInstance> site_instance =
 297         content::SiteInstance::CreateForURL(
 298             session->browser_context(), GURL("chrome-guest://fake-host"));
 299     content::WebContents::CreateParams params(
 300         session->browser_context(), site_instance);
 301     guest_delegate_.reset(new WebViewGuestDelegate);
 302     params.guest_delegate = guest_delegate_.get();
 303     web_contents = content::WebContents::Create(params);
 304   } else if (IsOffScreen()) {
 305     bool transparent = false;
 306     options.Get("transparent", &transparent);
 307
 308     content::WebContents::CreateParams params(session->browser_context());
 309     auto* view = new OffScreenWebContentsView(
 310         transparent, base::Bind(&WebContents::OnPaint, base::Unretained(this)));
 311     params.view = view;
 312     params.delegate_view = view;
 313
 314     web_contents = content::WebContents::Create(params);
 315     view->SetWebContents(web_contents);
 316   } else {
 317     content::WebContents::CreateParams params(session->browser_context());
 318     web_contents = content::WebContents::Create(params);
 319   }
 320
 321   InitWithSessionAndOptions(isolate, web_contents, session, options);
 322 }
 323
 324 void WebContents::InitWithSessionAndOptions(v8::Isolate* isolate,
 325                                             content::WebContents *web_contents,
 326                                             mate::Handle<api::Session> session,
 327                                             const mate::Dictionary& options) {
 328   Observe(web_contents);
 329   InitWithWebContents(web_contents, session->browser_context());
 330
 331   managed_web_contents()->GetView()->SetDelegate(this);
 332
 333   // Save the preferences in C++.
 334   new WebContentsPreferences(web_contents, options);
 335
 336   // Intialize permission helper.
 337   WebContentsPermissionHelper::CreateForWebContents(web_contents);
 338   // Intialize security state client.
 339   AtomSecurityStateModelClient::CreateForWebContents(web_contents);
 340
 341   web_contents->SetUserAgentOverride(GetBrowserContext()->GetUserAgent());
 342
 343   if (IsGuest()) {
 344     guest_delegate_->Initialize(this);
 345
 346     NativeWindow* owner_window = nullptr;
 347     if (options.Get("embedder", &embedder_) && embedder_) {
 348       // New WebContents's owner_window is the embedder's owner_window.
 349       auto relay =
 350           NativeWindowRelay::FromWebContents(embedder_->web_contents());
 351       if (relay)
 352         owner_window = relay->window.get();
 353     }
 354     if (owner_window)
 355       SetOwnerWindow(owner_window);
 356   }
 357
 358   Init(isolate);
 359   AttachAsUserData(web_contents);
 360 }
 361
 362 WebContents::~WebContents() {
 363   // The destroy() is called.
 364   if (managed_web_contents()) {
 365     // For webview we need to tell content module to do some cleanup work before
 366     // destroying it.
 367     if (type_ == WEB_VIEW)
 368       guest_delegate_->Destroy();
 369
 370     // The WebContentsDestroyed will not be called automatically because we
 371     // unsubscribe from webContents before destroying it. So we have to manually
 372     // call it here to make sure "destroyed" event is emitted.
 373     RenderViewDeleted(web_contents()->GetRenderViewHost());
 374     WebContentsDestroyed();
 375   }
 376 }
 377
 378 bool WebContents::AddMessageToConsole(content::WebContents* source,
 379                                       int32_t level,
 380                                       const base::string16& message,
 381                                       int32_t line_no,
 382                                       const base::string16& source_id) {
 383   if (type_ == BROWSER_WINDOW || type_ == OFF_SCREEN) {
 384     return false;
 385   } else {
 386     Emit("console-message", level, message, line_no, source_id);
 387     return true;
 388   }
 389 }
 390
 391 void WebContents::OnCreateWindow(
 392     const GURL& target_url,
 393     const std::string& frame_name,
 394     WindowOpenDisposition disposition,
 395     const std::vector<base::string16>& features,
 396     const scoped_refptr<content::ResourceRequestBodyImpl>& body) {
 397   if (type_ == BROWSER_WINDOW || type_ == OFF_SCREEN)
 398     Emit("-new-window", target_url, frame_name, disposition, features, body);
 399   else
 400     Emit("new-window", target_url, frame_name, disposition, features);
 401 }
 402
 403 void WebContents::WebContentsCreated(content::WebContents* source_contents,
 404                                      int opener_render_frame_id,
 405                                      const std::string& frame_name,
 406                                      const GURL& target_url,
 407                                      content::WebContents* new_contents) {
 408   v8::Locker locker(isolate());
 409   v8::HandleScope handle_scope(isolate());
 410   auto api_web_contents = CreateFrom(isolate(), new_contents, BROWSER_WINDOW);
 411   Emit("-web-contents-created", api_web_contents, target_url, frame_name);
 412 }
 413
 414 void WebContents::AddNewContents(content::WebContents* source,
 415                                  content::WebContents* new_contents,
 416                                  WindowOpenDisposition disposition,
 417                                  const gfx::Rect& initial_rect,
 418                                  bool user_gesture,
 419                                  bool* was_blocked) {
 420   v8::Locker locker(isolate());
 421   v8::HandleScope handle_scope(isolate());
 422   auto api_web_contents = CreateFrom(isolate(), new_contents);
 423   if (Emit("-add-new-contents", api_web_contents, disposition, user_gesture,
 424       initial_rect.x(), initial_rect.y(), initial_rect.width(),
 425       initial_rect.height())) {
 426     api_web_contents->DestroyWebContents();
 427   }
 428 }
 429
 430 content::WebContents* WebContents::OpenURLFromTab(
 431     content::WebContents* source,
 432     const content::OpenURLParams& params) {
 433   if (params.disposition != CURRENT_TAB) {
 434     if (type_ == BROWSER_WINDOW || type_ == OFF_SCREEN)
 435       Emit("-new-window", params.url, "", params.disposition);
 436     else
 437       Emit("new-window", params.url, "", params.disposition);
 438     return nullptr;
 439   }
 440
 441   // Give user a chance to cancel navigation.
 442   if (Emit("will-navigate", params.url))
 443     return nullptr;
 444
 445   // Don't load the URL if the web contents was marked as destroyed from a
 446   // will-navigate event listener
 447   if (IsDestroyed())
 448     return nullptr;
 449
 450   return CommonWebContentsDelegate::OpenURLFromTab(source, params);
 451 }
 452
 453 void WebContents::BeforeUnloadFired(content::WebContents* tab,
 454                                     bool proceed,
 455                                     bool* proceed_to_fire_unload) {
 456   if (type_ == BROWSER_WINDOW || type_ == OFF_SCREEN)
 457     *proceed_to_fire_unload = proceed;
 458   else
 459     *proceed_to_fire_unload = true;
 460 }
 461
 462 void WebContents::MoveContents(content::WebContents* source,
 463                                const gfx::Rect& pos) {
 464   Emit("move", pos);
 465 }
 466
 467 void WebContents::CloseContents(content::WebContents* source) {
 468   Emit("close");
 469
 470   if ((type_ == BROWSER_WINDOW || type_ == OFF_SCREEN) && owner_window())
 471     owner_window()->CloseContents(source);
 472 }
 473
 474 void WebContents::ActivateContents(content::WebContents* source) {
 475   Emit("activate");
 476 }
 477
 478 void WebContents::UpdateTargetURL(content::WebContents* source,
 479                                   const GURL& url) {
 480   Emit("update-target-url", url);
 481 }
 482
 483 bool WebContents::IsPopupOrPanel(const content::WebContents* source) const {
 484   return type_ == BROWSER_WINDOW;
 485 }
 486
 487 void WebContents::HandleKeyboardEvent(
 488     content::WebContents* source,
 489     const content::NativeWebKeyboardEvent& event) {
 490   if (type_ == WEB_VIEW && embedder_) {
 491     // Send the unhandled keyboard events back to the embedder.
 492     embedder_->HandleKeyboardEvent(source, event);
 493   } else {
 494     // Go to the default keyboard handling.
 495     CommonWebContentsDelegate::HandleKeyboardEvent(source, event);
 496   }
 497 }
 498
 499 bool WebContents::PreHandleKeyboardEvent(
 500     content::WebContents* source,
 501     const content::NativeWebKeyboardEvent& event,
 502     bool* is_keyboard_shortcut) {
 503   if (event.type == blink::WebInputEvent::Type::RawKeyDown
 504       || event.type == blink::WebInputEvent::Type::KeyUp)
 505     return Emit("before-input-event", event);
 506   else
 507     return false;
 508 }
 509
 510 void WebContents::EnterFullscreenModeForTab(content::WebContents* source,
 511                                             const GURL& origin) {
 512   auto permission_helper =
 513       WebContentsPermissionHelper::FromWebContents(source);
 514   auto callback = base::Bind(&WebContents::OnEnterFullscreenModeForTab,
 515                              base::Unretained(this), source, origin);
 516   permission_helper->RequestFullscreenPermission(callback);
 517 }
 518
 519 void WebContents::OnEnterFullscreenModeForTab(content::WebContents* source,
 520                                               const GURL& origin,
 521                                               bool allowed) {
 522   if (!allowed)
 523     return;
 524   CommonWebContentsDelegate::EnterFullscreenModeForTab(source, origin);
 525   Emit("enter-html-full-screen");
 526 }
 527
 528 void WebContents::ExitFullscreenModeForTab(content::WebContents* source) {
 529   CommonWebContentsDelegate::ExitFullscreenModeForTab(source);
 530   Emit("leave-html-full-screen");
 531 }
 532
 533 void WebContents::RendererUnresponsive(content::WebContents* source) {
 534   Emit("unresponsive");
 535   if ((type_ == BROWSER_WINDOW || type_ == OFF_SCREEN) && owner_window())
 536     owner_window()->RendererUnresponsive(source);
 537 }
 538
 539 void WebContents::RendererResponsive(content::WebContents* source) {
 540   Emit("responsive");
 541   if ((type_ == BROWSER_WINDOW || type_ == OFF_SCREEN) && owner_window())
 542     owner_window()->RendererResponsive(source);
 543 }
 544
 545 bool WebContents::HandleContextMenu(const content::ContextMenuParams& params) {
 546   if (params.custom_context.is_pepper_menu) {
 547     Emit("pepper-context-menu", std::make_pair(params, web_contents()));
 548     web_contents()->NotifyContextMenuClosed(params.custom_context);
 549   } else {
 550     Emit("context-menu", std::make_pair(params, web_contents()));
 551   }
 552
 553   return true;
 554 }
 555
 556 bool WebContents::OnGoToEntryOffset(int offset) {
 557   GoToOffset(offset);
 558   return false;
 559 }
 560
 561 void WebContents::FindReply(content::WebContents* web_contents,
 562                             int request_id,
 563                             int number_of_matches,
 564                             const gfx::Rect& selection_rect,
 565                             int active_match_ordinal,
 566                             bool final_update) {
 567   if (!final_update)
 568     return;
 569
 570   v8::Locker locker(isolate());
 571   v8::HandleScope handle_scope(isolate());
 572   mate::Dictionary result = mate::Dictionary::CreateEmpty(isolate());
 573   result.Set("requestId", request_id);
 574   result.Set("matches", number_of_matches);
 575   result.Set("selectionArea", selection_rect);
 576   result.Set("activeMatchOrdinal", active_match_ordinal);
 577   result.Set("finalUpdate", final_update);  // Deprecate after 2.0
 578   Emit("found-in-page", result);
 579 }
 580
 581 bool WebContents::CheckMediaAccessPermission(
 582     content::WebContents* web_contents,
 583     const GURL& security_origin,
 584     content::MediaStreamType type) {
 585   return true;
 586 }
 587
 588 void WebContents::RequestMediaAccessPermission(
 589     content::WebContents* web_contents,
 590     const content::MediaStreamRequest& request,
 591     const content::MediaResponseCallback& callback) {
 592   auto permission_helper =
 593       WebContentsPermissionHelper::FromWebContents(web_contents);
 594   permission_helper->RequestMediaAccessPermission(request, callback);
 595 }
 596
 597 void WebContents::RequestToLockMouse(
 598     content::WebContents* web_contents,
 599     bool user_gesture,
 600     bool last_unlocked_by_target) {
 601   auto permission_helper =
 602       WebContentsPermissionHelper::FromWebContents(web_contents);
 603   permission_helper->RequestPointerLockPermission(user_gesture);
 604 }
 605
 606 std::unique_ptr<content::BluetoothChooser> WebContents::RunBluetoothChooser(
 607     content::RenderFrameHost* frame,
 608     const content::BluetoothChooser::EventHandler& event_handler) {
 609   std::unique_ptr<BluetoothChooser> bluetooth_chooser(
 610       new BluetoothChooser(this, event_handler));
 611   return std::move(bluetooth_chooser);
 612 }
 613
 614 void WebContents::BeforeUnloadFired(const base::TimeTicks& proceed_time) {
 615   // Do nothing, we override this method just to avoid compilation error since
 616   // there are two virtual functions named BeforeUnloadFired.
 617 }
 618
 619 void WebContents::RenderViewCreated(content::RenderViewHost* render_view_host) {
 620   const auto impl = content::RenderWidgetHostImpl::FromID(
 621       render_view_host->GetProcess()->GetID(),
 622       render_view_host->GetRoutingID());
 623   if (impl)
 624     impl->disable_hidden_ = !background_throttling_;
 625 }
 626
 627 void WebContents::RenderViewDeleted(content::RenderViewHost* render_view_host) {
 628   Emit("render-view-deleted", render_view_host->GetProcess()->GetID());
 629 }
 630
 631 void WebContents::RenderProcessGone(base::TerminationStatus status) {
 632   Emit("crashed", status == base::TERMINATION_STATUS_PROCESS_WAS_KILLED);
 633 }
 634
 635 void WebContents::PluginCrashed(const base::FilePath& plugin_path,
 636                                 base::ProcessId plugin_pid) {
 637   content::WebPluginInfo info;
 638   auto plugin_service = content::PluginService::GetInstance();
 639   plugin_service->GetPluginInfoByPath(plugin_path, &info);
 640   Emit("plugin-crashed", info.name, info.version);
 641 }
 642
 643 void WebContents::MediaStartedPlaying(const MediaPlayerId& id) {
 644   Emit("media-started-playing");
 645 }
 646
 647 void WebContents::MediaStoppedPlaying(const MediaPlayerId& id) {
 648   Emit("media-paused");
 649 }
 650
 651 void WebContents::DidChangeThemeColor(SkColor theme_color) {
 652   Emit("did-change-theme-color", atom::ToRGBHex(theme_color));
 653 }
 654
 655 void WebContents::DocumentLoadedInFrame(
 656     content::RenderFrameHost* render_frame_host) {
 657   if (!render_frame_host->GetParent())
 658     Emit("dom-ready");
 659 }
 660
 661 void WebContents::DidFinishLoad(content::RenderFrameHost* render_frame_host,
 662                                 const GURL& validated_url) {
 663   bool is_main_frame = !render_frame_host->GetParent();
 664   Emit("did-frame-finish-load", is_main_frame);
 665
 666   if (is_main_frame)
 667     Emit("did-finish-load");
 668 }
 669
 670 void WebContents::DidFailLoad(content::RenderFrameHost* render_frame_host,
 671                               const GURL& url,
 672                               int error_code,
 673                               const base::string16& error_description,
 674                               bool was_ignored_by_handler) {
 675   bool is_main_frame = !render_frame_host->GetParent();
 676   Emit("did-fail-load", error_code, error_description, url, is_main_frame);
 677 }
 678
 679 void WebContents::DidStartLoading() {
 680   Emit("did-start-loading");
 681 }
 682
 683 void WebContents::DidStopLoading() {
 684   Emit("did-stop-loading");
 685 }
 686
 687 void WebContents::DidGetResourceResponseStart(
 688     const content::ResourceRequestDetails& details) {
 689   Emit("did-get-response-details",
 690        details.socket_address.IsEmpty(),
 691        details.url,
 692        details.original_url,
 693        details.http_response_code,
 694        details.method,
 695        details.referrer,
 696        details.headers.get(),
 697        ResourceTypeToString(details.resource_type));
 698 }
 699
 700 void WebContents::DidGetRedirectForResourceRequest(
 701     content::RenderFrameHost* render_frame_host,
 702     const content::ResourceRedirectDetails& details) {
 703   Emit("did-get-redirect-request",
 704        details.url,
 705        details.new_url,
 706        (details.resource_type == content::RESOURCE_TYPE_MAIN_FRAME),
 707        details.http_response_code,
 708        details.method,
 709        details.referrer,
 710        details.headers.get());
 711 }
 712
 713 void WebContents::DidFinishNavigation(
 714     content::NavigationHandle* navigation_handle) {
 715   bool is_main_frame = navigation_handle->IsInMainFrame();
 716   if (navigation_handle->HasCommitted() && !navigation_handle->IsErrorPage()) {
 717     auto url = navigation_handle->GetURL();
 718     bool is_in_page = navigation_handle->IsSamePage();
 719     if (is_main_frame && !is_in_page) {
 720       Emit("did-navigate", url);
 721     } else if (is_in_page) {
 722       Emit("did-navigate-in-page", url, is_main_frame);
 723     }
 724   } else {
 725     auto url = navigation_handle->GetURL();
 726     int code = navigation_handle->GetNetErrorCode();
 727     auto description = net::ErrorToShortString(code);
 728     Emit("did-fail-provisional-load", code, description, url, is_main_frame);
 729
 730     // Do not emit "did-fail-load" for canceled requests.
 731     if (code != net::ERR_ABORTED)
 732       Emit("did-fail-load", code, description, url, is_main_frame);
 733   }
 734 }
 735
 736 void WebContents::TitleWasSet(content::NavigationEntry* entry,
 737                               bool explicit_set) {
 738   if (entry)
 739     Emit("-page-title-updated", entry->GetTitle(), explicit_set);
 740   else
 741     Emit("-page-title-updated", "", explicit_set);
 742 }
 743
 744 void WebContents::DidUpdateFaviconURL(
 745     const std::vector<content::FaviconURL>& urls) {
 746   std::set<GURL> unique_urls;
 747   for (const auto& iter : urls) {
 748     if (iter.icon_type != content::FaviconURL::FAVICON)
 749       continue;
 750     const GURL& url = iter.icon_url;
 751     if (url.is_valid())
 752       unique_urls.insert(url);
 753   }
 754   Emit("page-favicon-updated", unique_urls);
 755 }
 756
 757 void WebContents::DevToolsReloadPage() {
 758   Emit("devtools-reload-page");
 759 }
 760
 761 void WebContents::DevToolsFocused() {
 762   Emit("devtools-focused");
 763 }
 764
 765 void WebContents::DevToolsOpened() {
 766   v8::Locker locker(isolate());
 767   v8::HandleScope handle_scope(isolate());
 768   auto handle = WebContents::CreateFrom(
 769       isolate(), managed_web_contents()->GetDevToolsWebContents());
 770   devtools_web_contents_.Reset(isolate(), handle.ToV8());
 771
 772   // Set inspected tabID.
 773   base::FundamentalValue tab_id(ID());
 774   managed_web_contents()->CallClientFunction(
 775       "DevToolsAPI.setInspectedTabId", &tab_id, nullptr, nullptr);
 776
 777   // Inherit owner window in devtools.
 778   if (owner_window())
 779     handle->SetOwnerWindow(managed_web_contents()->GetDevToolsWebContents(),
 780                            owner_window());
 781
 782   Emit("devtools-opened");
 783 }
 784
 785 void WebContents::DevToolsClosed() {
 786   v8::Locker locker(isolate());
 787   v8::HandleScope handle_scope(isolate());
 788   devtools_web_contents_.Reset();
 789
 790   Emit("devtools-closed");
 791 }
 792
 793 bool WebContents::OnMessageReceived(const IPC::Message& message) {
 794   bool handled = true;
 795   IPC_BEGIN_MESSAGE_MAP(WebContents, message)
 796     IPC_MESSAGE_HANDLER(AtomViewHostMsg_Message, OnRendererMessage)
 797     IPC_MESSAGE_HANDLER_DELAY_REPLY(AtomViewHostMsg_Message_Sync,
 798                                     OnRendererMessageSync)
 799     IPC_MESSAGE_HANDLER_CODE(ViewHostMsg_SetCursor, OnCursorChange,
 800       handled = false)
 801     IPC_MESSAGE_UNHANDLED(handled = false)
 802   IPC_END_MESSAGE_MAP()
 803
 804   return handled;
 805 }
 806
 807 // There are three ways of destroying a webContents:
 808 // 1. call webContents.destroy();
 809 // 2. garbage collection;
 810 // 3. user closes the window of webContents;
 811 // For webview only #1 will happen, for BrowserWindow both #1 and #3 may
 812 // happen. The #2 should never happen for webContents, because webview is
 813 // managed by GuestViewManager, and BrowserWindow's webContents is managed
 814 // by api::Window.
 815 // For #1, the destructor will do the cleanup work and we only need to make
 816 // sure "destroyed" event is emitted. For #3, the content::WebContents will
 817 // be destroyed on close, and WebContentsDestroyed would be called for it, so
 818 // we need to make sure the api::WebContents is also deleted.
 819 void WebContents::WebContentsDestroyed() {
 820   // This event is only for internal use, which is emitted when WebContents is
 821   // being destroyed.
 822   Emit("will-destroy");
 823
 824   // Cleanup relationships with other parts.
 825   RemoveFromWeakMap();
 826
 827   // We can not call Destroy here because we need to call Emit first, but we
 828   // also do not want any method to be used, so just mark as destroyed here.
 829   MarkDestroyed();
 830
 831   Emit("destroyed");
 832
 833   // Destroy the native class in next tick.
 834   base::ThreadTaskRunnerHandle::Get()->PostTask(
 835       FROM_HERE, GetDestroyClosure());
 836 }
 837
 838 void WebContents::NavigationEntryCommitted(
 839     const content::LoadCommittedDetails& details) {
 840   Emit("navigation-entry-commited", details.entry->GetURL(),
 841        details.is_in_page, details.did_replace_entry);
 842 }
 843
 844 int64_t WebContents::GetID() const {
 845   int64_t process_id = web_contents()->GetRenderProcessHost()->GetID();
 846   int64_t routing_id = web_contents()->GetRoutingID();
 847   int64_t rv = (process_id << 32) + routing_id;
 848   return rv;
 849 }
 850
 851 int WebContents::GetProcessID() const {
 852   return web_contents()->GetRenderProcessHost()->GetID();
 853 }
 854
 855 WebContents::Type WebContents::GetType() const {
 856   return type_;
 857 }
 858
 859 bool WebContents::Equal(const WebContents* web_contents) const {
 860   return GetID() == web_contents->GetID();
 861 }
 862
 863 void WebContents::LoadURL(const GURL& url, const mate::Dictionary& options) {
 864   if (!url.is_valid()) {
 865     Emit("did-fail-load",
 866          static_cast<int>(net::ERR_INVALID_URL),
 867          net::ErrorToShortString(net::ERR_INVALID_URL),
 868          url.possibly_invalid_spec(),
 869          true);
 870     return;
 871   }
 872
 873   content::NavigationController::LoadURLParams params(url);
 874
 875   GURL http_referrer;
 876   if (options.Get("httpReferrer", &http_referrer))
 877     params.referrer = content::Referrer(http_referrer.GetAsReferrer(),
 878                                         blink::WebReferrerPolicyDefault);
 879
 880   std::string user_agent;
 881   if (options.Get("userAgent", &user_agent))
 882     web_contents()->SetUserAgentOverride(user_agent);
 883
 884   std::string extra_headers;
 885   if (options.Get("extraHeaders", &extra_headers))
 886     params.extra_headers = extra_headers;
 887
 888   scoped_refptr<content::ResourceRequestBodyImpl> body;
 889   if (options.Get("postData", &body)) {
 890     params.post_data = body;
 891     params.load_type = content::NavigationController::LOAD_TYPE_HTTP_POST;
 892   }
 893
 894   params.transition_type = ui::PAGE_TRANSITION_TYPED;
 895   params.should_clear_history_list = true;
 896   params.override_user_agent = content::NavigationController::UA_OVERRIDE_TRUE;
 897   web_contents()->GetController().LoadURLWithParams(params);
 898
 899   // Set the background color of RenderWidgetHostView.
 900   // We have to call it right after LoadURL because the RenderViewHost is only
 901   // created after loading a page.
 902   const auto view = web_contents()->GetRenderWidgetHostView();
 903   WebContentsPreferences* web_preferences =
 904       WebContentsPreferences::FromWebContents(web_contents());
 905   std::string color_name;
 906   if (web_preferences->web_preferences()->GetString(options::kBackgroundColor,
 907                                                     &color_name)) {
 908     view->SetBackgroundColor(ParseHexColor(color_name));
 909   } else {
 910     view->SetBackgroundColor(SK_ColorTRANSPARENT);
 911   }
 912 }
 913
 914 void WebContents::DownloadURL(const GURL& url) {
 915   auto browser_context = web_contents()->GetBrowserContext();
 916   auto download_manager =
 917     content::BrowserContext::GetDownloadManager(browser_context);
 918
 919   download_manager->DownloadUrl(
 920       content::DownloadUrlParameters::CreateForWebContentsMainFrame(
 921           web_contents(), url));
 922 }
 923
 924 GURL WebContents::GetURL() const {
 925   return web_contents()->GetURL();
 926 }
 927
 928 base::string16 WebContents::GetTitle() const {
 929   return web_contents()->GetTitle();
 930 }
 931
 932 bool WebContents::IsLoading() const {
 933   return web_contents()->IsLoading();
 934 }
 935
 936 bool WebContents::IsLoadingMainFrame() const {
 937   // Comparing site instances works because Electron always creates a new site
 938   // instance when navigating, regardless of origin. See AtomBrowserClient.
 939   return (web_contents()->GetLastCommittedURL().is_empty() ||
 940           web_contents()->GetSiteInstance() !=
 941           web_contents()->GetPendingSiteInstance()) && IsLoading();
 942 }
 943
 944 bool WebContents::IsWaitingForResponse() const {
 945   return web_contents()->IsWaitingForResponse();
 946 }
 947
 948 void WebContents::Stop() {
 949   web_contents()->Stop();
 950 }
 951
 952 void WebContents::GoBack() {
 953   atom::AtomBrowserClient::SuppressRendererProcessRestartForOnce();
 954   web_contents()->GetController().GoBack();
 955 }
 956
 957 void WebContents::GoForward() {
 958   atom::AtomBrowserClient::SuppressRendererProcessRestartForOnce();
 959   web_contents()->GetController().GoForward();
 960 }
 961
 962 void WebContents::GoToOffset(int offset) {
 963   atom::AtomBrowserClient::SuppressRendererProcessRestartForOnce();
 964   web_contents()->GetController().GoToOffset(offset);
 965 }
 966
 967 bool WebContents::IsCrashed() const {
 968   return web_contents()->IsCrashed();
 969 }
 970
 971 void WebContents::SetUserAgent(const std::string& user_agent,
 972                                mate::Arguments* args) {
 973   web_contents()->SetUserAgentOverride(user_agent);
 974 }
 975
 976 std::string WebContents::GetUserAgent() {
 977   return web_contents()->GetUserAgentOverride();
 978 }
 979
 980 bool WebContents::SavePage(const base::FilePath& full_file_path,
 981                            const content::SavePageType& save_type,
 982                            const SavePageHandler::SavePageCallback& callback) {
 983   auto handler = new SavePageHandler(web_contents(), callback);
 984   return handler->Handle(full_file_path, save_type);
 985 }
 986
 987 void WebContents::OpenDevTools(mate::Arguments* args) {
 988   if (type_ == REMOTE)
 989     return;
 990
 991   if (!enable_devtools_)
 992     return;
 993
 994   std::string state;
 995   if (type_ == WEB_VIEW || !owner_window()) {
 996     state = "detach";
 997   } else if (args && args->Length() == 1) {
 998     bool detach = false;
 999     mate::Dictionary options;
1000     if (args->GetNext(&options)) {
1001       options.Get("mode", &state);
1002
1003       // TODO(kevinsawicki) Remove in 2.0
1004       options.Get("detach", &detach);
1005       if (state.empty() && detach)
1006         state = "detach";
1007     }
1008   }
1009   managed_web_contents()->SetDockState(state);
1010   managed_web_contents()->ShowDevTools();
1011 }
1012
1013 void WebContents::CloseDevTools() {
1014   if (type_ == REMOTE)
1015     return;
1016
1017   managed_web_contents()->CloseDevTools();
1018 }
1019
1020 bool WebContents::IsDevToolsOpened() {
1021   if (type_ == REMOTE)
1022     return false;
1023
1024   return managed_web_contents()->IsDevToolsViewShowing();
1025 }
1026
1027 bool WebContents::IsDevToolsFocused() {
1028   if (type_ == REMOTE)
1029     return false;
1030
1031   return managed_web_contents()->GetView()->IsDevToolsViewFocused();
1032 }
1033
1034 void WebContents::EnableDeviceEmulation(
1035     const blink::WebDeviceEmulationParams& params) {
1036   if (type_ == REMOTE)
1037     return;
1038
1039   Send(new ViewMsg_EnableDeviceEmulation(routing_id(), params));
1040 }
1041
1042 void WebContents::DisableDeviceEmulation() {
1043   if (type_ == REMOTE)
1044     return;
1045
1046   Send(new ViewMsg_DisableDeviceEmulation(routing_id()));
1047 }
1048
1049 void WebContents::ToggleDevTools() {
1050   if (IsDevToolsOpened())
1051     CloseDevTools();
1052   else
1053     OpenDevTools(nullptr);
1054 }
1055
1056 void WebContents::InspectElement(int x, int y) {
1057   if (type_ == REMOTE)
1058     return;
1059
1060   if (!enable_devtools_)
1061     return;
1062
1063   if (!managed_web_contents()->GetDevToolsWebContents())
1064     OpenDevTools(nullptr);
1065   managed_web_contents()->InspectElement(x, y);
1066 }
1067
1068 void WebContents::InspectServiceWorker() {
1069   if (type_ == REMOTE)
1070     return;
1071
1072   if (!enable_devtools_)
1073     return;
1074
1075   for (const auto& agent_host : content::DevToolsAgentHost::GetOrCreateAll()) {
1076     if (agent_host->GetType() ==
1077         content::DevToolsAgentHost::TYPE_SERVICE_WORKER) {
1078       OpenDevTools(nullptr);
1079       managed_web_contents()->AttachTo(agent_host);
1080       break;
1081     }
1082   }
1083 }
1084
1085 void WebContents::HasServiceWorker(
1086     const base::Callback<void(bool)>& callback) {
1087   auto context = GetServiceWorkerContext(web_contents());
1088   if (!context)
1089     return;
1090
1091   context->CheckHasServiceWorker(web_contents()->GetLastCommittedURL(),
1092                                  GURL::EmptyGURL(),
1093                                  callback);
1094 }
1095
1096 void WebContents::UnregisterServiceWorker(
1097     const base::Callback<void(bool)>& callback) {
1098   auto context = GetServiceWorkerContext(web_contents());
1099   if (!context)
1100     return;
1101
1102   context->UnregisterServiceWorker(web_contents()->GetLastCommittedURL(),
1103                                    callback);
1104 }
1105
1106 void WebContents::SetAudioMuted(bool muted) {
1107   web_contents()->SetAudioMuted(muted);
1108 }
1109
1110 bool WebContents::IsAudioMuted() {
1111   return web_contents()->IsAudioMuted();
1112 }
1113
1114 void WebContents::Print(mate::Arguments* args) {
1115   PrintSettings settings = { false, false };
1116   if (args->Length() == 1 && !args->GetNext(&settings)) {
1117     args->ThrowError();
1118     return;
1119   }
1120
1121   printing::PrintViewManagerBasic::FromWebContents(web_contents())->
1122       PrintNow(settings.silent, settings.print_background);
1123 }
1124
1125 void WebContents::PrintToPDF(const base::DictionaryValue& setting,
1126                              const PrintToPDFCallback& callback) {
1127   printing::PrintPreviewMessageHandler::FromWebContents(web_contents())->
1128       PrintToPDF(setting, callback);
1129 }
1130
1131 void WebContents::AddWorkSpace(mate::Arguments* args,
1132                                const base::FilePath& path) {
1133   if (path.empty()) {
1134     args->ThrowError("path cannot be empty");
1135     return;
1136   }
1137   DevToolsAddFileSystem(path);
1138 }
1139
1140 void WebContents::RemoveWorkSpace(mate::Arguments* args,
1141                                   const base::FilePath& path) {
1142   if (path.empty()) {
1143     args->ThrowError("path cannot be empty");
1144     return;
1145   }
1146   DevToolsRemoveFileSystem(path);
1147 }
1148
1149 void WebContents::Undo() {
1150   web_contents()->Undo();
1151 }
1152
1153 void WebContents::Redo() {
1154   web_contents()->Redo();
1155 }
1156
1157 void WebContents::Cut() {
1158   web_contents()->Cut();
1159 }
1160
1161 void WebContents::Copy() {
1162   web_contents()->Copy();
1163 }
1164
1165 void WebContents::Paste() {
1166   web_contents()->Paste();
1167 }
1168
1169 void WebContents::PasteAndMatchStyle() {
1170   web_contents()->PasteAndMatchStyle();
1171 }
1172
1173 void WebContents::Delete() {
1174   web_contents()->Delete();
1175 }
1176
1177 void WebContents::SelectAll() {
1178   web_contents()->SelectAll();
1179 }
1180
1181 void WebContents::Unselect() {
1182   web_contents()->Unselect();
1183 }
1184
1185 void WebContents::Replace(const base::string16& word) {
1186   web_contents()->Replace(word);
1187 }
1188
1189 void WebContents::ReplaceMisspelling(const base::string16& word) {
1190   web_contents()->ReplaceMisspelling(word);
1191 }
1192
1193 uint32_t WebContents::FindInPage(mate::Arguments* args) {
1194   uint32_t request_id = GetNextRequestId();
1195   base::string16 search_text;
1196   blink::WebFindOptions options;
1197   if (!args->GetNext(&search_text) || search_text.empty()) {
1198     args->ThrowError("Must provide a non-empty search content");
1199     return 0;
1200   }
1201
1202   args->GetNext(&options);
1203
1204   web_contents()->Find(request_id, search_text, options);
1205   return request_id;
1206 }
1207
1208 void WebContents::StopFindInPage(content::StopFindAction action) {
1209   web_contents()->StopFinding(action);
1210 }
1211
1212 void WebContents::ShowDefinitionForSelection() {
1213 #if defined(OS_MACOSX)
1214   const auto view = web_contents()->GetRenderWidgetHostView();
1215   if (view)
1216     view->ShowDefinitionForSelection();
1217 #endif
1218 }
1219
1220 void WebContents::CopyImageAt(int x, int y) {
1221   const auto host = web_contents()->GetMainFrame();
1222   if (host)
1223     host->CopyImageAt(x, y);
1224 }
1225
1226 void WebContents::Focus() {
1227   web_contents()->Focus();
1228 }
1229
1230 #if !defined(OS_MACOSX)
1231 bool WebContents::IsFocused() const {
1232   auto view = web_contents()->GetRenderWidgetHostView();
1233   if (!view) return false;
1234
1235   if (GetType() != BACKGROUND_PAGE) {
1236     auto window = web_contents()->GetNativeView()->GetToplevelWindow();
1237     if (window && !window->IsVisible())
1238       return false;
1239   }
1240
1241   return view->HasFocus();
1242 }
1243 #endif
1244
1245 void WebContents::TabTraverse(bool reverse) {
1246   web_contents()->FocusThroughTabTraversal(reverse);
1247 }
1248
1249 bool WebContents::SendIPCMessage(bool all_frames,
1250                                  const base::string16& channel,
1251                                  const base::ListValue& args) {
1252   return Send(new AtomViewMsg_Message(routing_id(), all_frames, channel, args));
1253 }
1254
1255 void WebContents::SendInputEvent(v8::Isolate* isolate,
1256                                  v8::Local<v8::Value> input_event) {
1257   const auto view = web_contents()->GetRenderWidgetHostView();
1258   if (!view)
1259     return;
1260   const auto host = view->GetRenderWidgetHost();
1261   if (!host)
1262     return;
1263
1264   int type = mate::GetWebInputEventType(isolate, input_event);
1265   if (blink::WebInputEvent::isMouseEventType(type)) {
1266     blink::WebMouseEvent mouse_event;
1267     if (mate::ConvertFromV8(isolate, input_event, &mouse_event)) {
1268       host->ForwardMouseEvent(mouse_event);
1269       return;
1270     }
1271   } else if (blink::WebInputEvent::isKeyboardEventType(type)) {
1272     content::NativeWebKeyboardEvent keyboard_event;
1273     if (mate::ConvertFromV8(isolate, input_event, &keyboard_event)) {
1274       host->ForwardKeyboardEvent(keyboard_event);
1275       return;
1276     }
1277   } else if (type == blink::WebInputEvent::MouseWheel) {
1278     blink::WebMouseWheelEvent mouse_wheel_event;
1279     if (mate::ConvertFromV8(isolate, input_event, &mouse_wheel_event)) {
1280       host->ForwardWheelEvent(mouse_wheel_event);
1281       return;
1282     }
1283   }
1284
1285   isolate->ThrowException(v8::Exception::Error(mate::StringToV8(
1286       isolate, "Invalid event object")));
1287 }
1288
1289 void WebContents::BeginFrameSubscription(mate::Arguments* args) {
1290   bool only_dirty = false;
1291   FrameSubscriber::FrameCaptureCallback callback;
1292
1293   args->GetNext(&only_dirty);
1294   if (!args->GetNext(&callback)) {
1295     args->ThrowError();
1296     return;
1297   }
1298
1299   const auto view = web_contents()->GetRenderWidgetHostView();
1300   if (view) {
1301     std::unique_ptr<FrameSubscriber> frame_subscriber(new FrameSubscriber(
1302         isolate(), view, callback, only_dirty));
1303     view->BeginFrameSubscription(std::move(frame_subscriber));
1304   }
1305 }
1306
1307 void WebContents::EndFrameSubscription() {
1308   const auto view = web_contents()->GetRenderWidgetHostView();
1309   if (view)
1310     view->EndFrameSubscription();
1311 }
1312
1313 void WebContents::StartDrag(const mate::Dictionary& item,
1314                             mate::Arguments* args) {
1315   base::FilePath file;
1316   std::vector<base::FilePath> files;
1317   if (!item.Get("files", &files) && item.Get("file", &file)) {
1318     files.push_back(file);
1319   }
1320
1321   mate::Handle<NativeImage> icon;
1322   if (!item.Get("icon", &icon) && !file.empty()) {
1323     // TODO(zcbenz): Set default icon from file.
1324   }
1325
1326   // Error checking.
1327   if (icon.IsEmpty()) {
1328     args->ThrowError("icon must be set");
1329     return;
1330   }
1331
1332   // Start dragging.
1333   if (!files.empty()) {
1334     base::MessageLoop::ScopedNestableTaskAllower allow(
1335         base::MessageLoop::current());
1336     DragFileItems(files, icon->image(), web_contents()->GetNativeView());
1337   } else {
1338     args->ThrowError("There is nothing to drag");
1339   }
1340 }
1341
1342 void WebContents::CapturePage(mate::Arguments* args) {
1343   gfx::Rect rect;
1344   base::Callback<void(const gfx::Image&)> callback;
1345
1346   if (!(args->Length() == 1 && args->GetNext(&callback)) &&
1347       !(args->Length() == 2 && args->GetNext(&rect)
1348                             && args->GetNext(&callback))) {
1349     args->ThrowError();
1350     return;
1351   }
1352
1353   const auto view = web_contents()->GetRenderWidgetHostView();
1354   const auto host = view ? view->GetRenderWidgetHost() : nullptr;
1355   if (!view || !host) {
1356     callback.Run(gfx::Image());
1357     return;
1358   }
1359
1360   // Capture full page if user doesn't specify a |rect|.
1361   const gfx::Size view_size = rect.IsEmpty() ? view->GetViewBounds().size() :
1362                                                rect.size();
1363
1364   // By default, the requested bitmap size is the view size in screen
1365   // coordinates.  However, if there's more pixel detail available on the
1366   // current system, increase the requested bitmap size to capture it all.
1367   gfx::Size bitmap_size = view_size;
1368   const gfx::NativeView native_view = view->GetNativeView();
1369   const float scale =
1370       display::Screen::GetScreen()->GetDisplayNearestWindow(native_view)
1371       .device_scale_factor();
1372   if (scale > 1.0f)
1373     bitmap_size = gfx::ScaleToCeiledSize(view_size, scale);
1374
1375   host->CopyFromBackingStore(gfx::Rect(rect.origin(), view_size),
1376                              bitmap_size,
1377                              base::Bind(&OnCapturePageDone, callback),
1378                              kBGRA_8888_SkColorType);
1379 }
1380
1381 void WebContents::OnCursorChange(const content::WebCursor& cursor) {
1382   content::WebCursor::CursorInfo info;
1383   cursor.GetCursorInfo(&info);
1384
1385   if (cursor.IsCustom()) {
1386     Emit("cursor-changed", CursorTypeToString(info),
1387       gfx::Image::CreateFrom1xBitmap(info.custom_image),
1388       info.image_scale_factor,
1389       gfx::Size(info.custom_image.width(), info.custom_image.height()),
1390       info.hotspot);
1391   } else {
1392     Emit("cursor-changed", CursorTypeToString(info));
1393   }
1394 }
1395
1396 void WebContents::SetSize(const SetSizeParams& params) {
1397   if (guest_delegate_)
1398     guest_delegate_->SetSize(params);
1399 }
1400
1401 bool WebContents::IsGuest() const {
1402   return type_ == WEB_VIEW;
1403 }
1404
1405 bool WebContents::IsOffScreen() const {
1406   return type_ == OFF_SCREEN;
1407 }
1408
1409 void WebContents::OnPaint(const gfx::Rect& dirty_rect, const SkBitmap& bitmap) {
1410   mate::Handle<NativeImage> image =
1411       NativeImage::Create(isolate(), gfx::Image::CreateFrom1xBitmap(bitmap));
1412   Emit("paint", dirty_rect, image);
1413 }
1414
1415 void WebContents::StartPainting() {
1416   if (!IsOffScreen())
1417     return;
1418
1419   auto* osr_rwhv = static_cast<OffScreenRenderWidgetHostView*>(
1420       web_contents()->GetRenderWidgetHostView());
1421   if (osr_rwhv)
1422     osr_rwhv->SetPainting(true);
1423 }
1424
1425 void WebContents::StopPainting() {
1426   if (!IsOffScreen())
1427     return;
1428
1429   auto* osr_rwhv = static_cast<OffScreenRenderWidgetHostView*>(
1430       web_contents()->GetRenderWidgetHostView());
1431   if (osr_rwhv)
1432     osr_rwhv->SetPainting(false);
1433 }
1434
1435 bool WebContents::IsPainting() const {
1436   if (!IsOffScreen())
1437     return false;
1438
1439   const auto* osr_rwhv = static_cast<OffScreenRenderWidgetHostView*>(
1440       web_contents()->GetRenderWidgetHostView());
1441   return osr_rwhv && osr_rwhv->IsPainting();
1442 }
1443
1444 void WebContents::SetFrameRate(int frame_rate) {
1445   if (!IsOffScreen())
1446     return;
1447
1448   auto* osr_rwhv = static_cast<OffScreenRenderWidgetHostView*>(
1449       web_contents()->GetRenderWidgetHostView());
1450   if (osr_rwhv)
1451     osr_rwhv->SetFrameRate(frame_rate);
1452 }
1453
1454 int WebContents::GetFrameRate() const {
1455   if (!IsOffScreen())
1456     return 0;
1457
1458   const auto* osr_rwhv = static_cast<OffScreenRenderWidgetHostView*>(
1459       web_contents()->GetRenderWidgetHostView());
1460   return osr_rwhv ? osr_rwhv->GetFrameRate() : 0;
1461 }
1462
1463 void WebContents::Invalidate() {
1464   if (!IsOffScreen())
1465     return;
1466
1467   auto* osr_rwhv = static_cast<OffScreenRenderWidgetHostView*>(
1468       web_contents()->GetRenderWidgetHostView());
1469   if (osr_rwhv)
1470     osr_rwhv->Invalidate();
1471 }
1472
1473 v8::Local<v8::Value> WebContents::GetWebPreferences(v8::Isolate* isolate) {
1474   WebContentsPreferences* web_preferences =
1475       WebContentsPreferences::FromWebContents(web_contents());
1476   return mate::ConvertToV8(isolate, *web_preferences->web_preferences());
1477 }
1478
1479 v8::Local<v8::Value> WebContents::GetOwnerBrowserWindow() {
1480   if (owner_window())
1481     return Window::From(isolate(), owner_window());
1482   else
1483     return v8::Null(isolate());
1484 }
1485
1486 int32_t WebContents::ID() const {
1487   return weak_map_id();
1488 }
1489
1490 v8::Local<v8::Value> WebContents::Session(v8::Isolate* isolate) {
1491   return v8::Local<v8::Value>::New(isolate, session_);
1492 }
1493
1494 content::WebContents* WebContents::HostWebContents() {
1495   if (!embedder_)
1496     return nullptr;
1497   return embedder_->web_contents();
1498 }
1499
1500 void WebContents::SetEmbedder(const WebContents* embedder) {
1501   if (embedder) {
1502     NativeWindow* owner_window = nullptr;
1503     auto relay = NativeWindowRelay::FromWebContents(embedder->web_contents());
1504     if (relay) {
1505       owner_window = relay->window.get();
1506     }
1507     if (owner_window)
1508       SetOwnerWindow(owner_window);
1509
1510     content::RenderWidgetHostView* rwhv =
1511         web_contents()->GetRenderWidgetHostView();
1512     if (rwhv) {
1513       rwhv->Hide();
1514       rwhv->Show();
1515     }
1516   }
1517 }
1518
1519 v8::Local<v8::Value> WebContents::DevToolsWebContents(v8::Isolate* isolate) {
1520   if (devtools_web_contents_.IsEmpty())
1521     return v8::Null(isolate);
1522   else
1523     return v8::Local<v8::Value>::New(isolate, devtools_web_contents_);
1524 }
1525
1526 v8::Local<v8::Value> WebContents::Debugger(v8::Isolate* isolate) {
1527   if (debugger_.IsEmpty()) {
1528     auto handle = atom::api::Debugger::Create(isolate, web_contents());
1529     debugger_.Reset(isolate, handle.ToV8());
1530   }
1531   return v8::Local<v8::Value>::New(isolate, debugger_);
1532 }
1533
1534 // static
1535 void WebContents::BuildPrototype(v8::Isolate* isolate,
1536                                  v8::Local<v8::FunctionTemplate> prototype) {
1537   prototype->SetClassName(mate::StringToV8(isolate, "WebContents"));
1538   mate::ObjectTemplateBuilder(isolate, prototype->PrototypeTemplate())
1539       .MakeDestroyable()
1540       .SetMethod("getId", &WebContents::GetID)
1541       .SetMethod("getProcessId", &WebContents::GetProcessID)
1542       .SetMethod("equal", &WebContents::Equal)
1543       .SetMethod("_loadURL", &WebContents::LoadURL)
1544       .SetMethod("downloadURL", &WebContents::DownloadURL)
1545       .SetMethod("_getURL", &WebContents::GetURL)
1546       .SetMethod("getTitle", &WebContents::GetTitle)
1547       .SetMethod("isLoading", &WebContents::IsLoading)
1548       .SetMethod("isLoadingMainFrame", &WebContents::IsLoadingMainFrame)
1549       .SetMethod("isWaitingForResponse", &WebContents::IsWaitingForResponse)
1550       .SetMethod("_stop", &WebContents::Stop)
1551       .SetMethod("_goBack", &WebContents::GoBack)
1552       .SetMethod("_goForward", &WebContents::GoForward)
1553       .SetMethod("_goToOffset", &WebContents::GoToOffset)
1554       .SetMethod("isCrashed", &WebContents::IsCrashed)
1555       .SetMethod("setUserAgent", &WebContents::SetUserAgent)
1556       .SetMethod("getUserAgent", &WebContents::GetUserAgent)
1557       .SetMethod("savePage", &WebContents::SavePage)
1558       .SetMethod("openDevTools", &WebContents::OpenDevTools)
1559       .SetMethod("closeDevTools", &WebContents::CloseDevTools)
1560       .SetMethod("isDevToolsOpened", &WebContents::IsDevToolsOpened)
1561       .SetMethod("isDevToolsFocused", &WebContents::IsDevToolsFocused)
1562       .SetMethod("enableDeviceEmulation",
1563                  &WebContents::EnableDeviceEmulation)
1564       .SetMethod("disableDeviceEmulation",
1565                  &WebContents::DisableDeviceEmulation)
1566       .SetMethod("toggleDevTools", &WebContents::ToggleDevTools)
1567       .SetMethod("inspectElement", &WebContents::InspectElement)
1568       .SetMethod("setAudioMuted", &WebContents::SetAudioMuted)
1569       .SetMethod("isAudioMuted", &WebContents::IsAudioMuted)
1570       .SetMethod("undo", &WebContents::Undo)
1571       .SetMethod("redo", &WebContents::Redo)
1572       .SetMethod("cut", &WebContents::Cut)
1573       .SetMethod("copy", &WebContents::Copy)
1574       .SetMethod("paste", &WebContents::Paste)
1575       .SetMethod("pasteAndMatchStyle", &WebContents::PasteAndMatchStyle)
1576       .SetMethod("delete", &WebContents::Delete)
1577       .SetMethod("selectAll", &WebContents::SelectAll)
1578       .SetMethod("unselect", &WebContents::Unselect)
1579       .SetMethod("replace", &WebContents::Replace)
1580       .SetMethod("replaceMisspelling", &WebContents::ReplaceMisspelling)
1581       .SetMethod("findInPage", &WebContents::FindInPage)
1582       .SetMethod("stopFindInPage", &WebContents::StopFindInPage)
1583       .SetMethod("focus", &WebContents::Focus)
1584       .SetMethod("isFocused", &WebContents::IsFocused)
1585       .SetMethod("tabTraverse", &WebContents::TabTraverse)
1586       .SetMethod("_send", &WebContents::SendIPCMessage)
1587       .SetMethod("sendInputEvent", &WebContents::SendInputEvent)
1588       .SetMethod("beginFrameSubscription",
1589                  &WebContents::BeginFrameSubscription)
1590       .SetMethod("endFrameSubscription", &WebContents::EndFrameSubscription)
1591       .SetMethod("startDrag", &WebContents::StartDrag)
1592       .SetMethod("setSize", &WebContents::SetSize)
1593       .SetMethod("isGuest", &WebContents::IsGuest)
1594       .SetMethod("isOffscreen", &WebContents::IsOffScreen)
1595       .SetMethod("startPainting", &WebContents::StartPainting)
1596       .SetMethod("stopPainting", &WebContents::StopPainting)
1597       .SetMethod("isPainting", &WebContents::IsPainting)
1598       .SetMethod("setFrameRate", &WebContents::SetFrameRate)
1599       .SetMethod("getFrameRate", &WebContents::GetFrameRate)
1600       .SetMethod("invalidate", &WebContents::Invalidate)
1601       .SetMethod("getType", &WebContents::GetType)
1602       .SetMethod("getWebPreferences", &WebContents::GetWebPreferences)
1603       .SetMethod("getOwnerBrowserWindow", &WebContents::GetOwnerBrowserWindow)
1604       .SetMethod("hasServiceWorker", &WebContents::HasServiceWorker)
1605       .SetMethod("unregisterServiceWorker",
1606                  &WebContents::UnregisterServiceWorker)
1607       .SetMethod("inspectServiceWorker", &WebContents::InspectServiceWorker)
1608       .SetMethod("print", &WebContents::Print)
1609       .SetMethod("_printToPDF", &WebContents::PrintToPDF)
1610       .SetMethod("addWorkSpace", &WebContents::AddWorkSpace)
1611       .SetMethod("removeWorkSpace", &WebContents::RemoveWorkSpace)
1612       .SetMethod("showDefinitionForSelection",
1613                  &WebContents::ShowDefinitionForSelection)
1614       .SetMethod("copyImageAt", &WebContents::CopyImageAt)
1615       .SetMethod("capturePage", &WebContents::CapturePage)
1616       .SetMethod("setEmbedder", &WebContents::SetEmbedder)
1617       .SetProperty("id", &WebContents::ID)
1618       .SetProperty("session", &WebContents::Session)
1619       .SetProperty("hostWebContents", &WebContents::HostWebContents)
1620       .SetProperty("devToolsWebContents", &WebContents::DevToolsWebContents)
1621       .SetProperty("debugger", &WebContents::Debugger);
1622 }
1623
1624 AtomBrowserContext* WebContents::GetBrowserContext() const {
1625   return static_cast<AtomBrowserContext*>(web_contents()->GetBrowserContext());
1626 }
1627
1628 void WebContents::OnRendererMessage(const base::string16& channel,
1629                                     const base::ListValue& args) {
1630   // webContents.emit(channel, new Event(), args...);
1631   Emit(base::UTF16ToUTF8(channel), args);
1632 }
1633
1634 void WebContents::OnRendererMessageSync(const base::string16& channel,
1635                                         const base::ListValue& args,
1636                                         IPC::Message* message) {
1637   // webContents.emit(channel, new Event(sender, message), args...);
1638   EmitWithSender(base::UTF16ToUTF8(channel), web_contents(), message, args);
1639 }
1640
1641 // static
1642 mate::Handle<WebContents> WebContents::CreateFrom(
1643     v8::Isolate* isolate, content::WebContents* web_contents) {
1644   // We have an existing WebContents object in JS.
1645   auto existing = TrackableObject::FromWrappedClass(isolate, web_contents);
1646   if (existing)
1647     return mate::CreateHandle(isolate, static_cast<WebContents*>(existing));
1648
1649   // Otherwise create a new WebContents wrapper object.
1650   return mate::CreateHandle(isolate, new WebContents(isolate, web_contents,
1651         REMOTE));
1652 }
1653
1654 mate::Handle<WebContents> WebContents::CreateFrom(
1655     v8::Isolate* isolate, content::WebContents* web_contents, Type type) {
1656   // Otherwise create a new WebContents wrapper object.
1657   return mate::CreateHandle(isolate, new WebContents(isolate, web_contents,
1658         type));
1659 }
1660
1661 // static
1662 mate::Handle<WebContents> WebContents::Create(
1663     v8::Isolate* isolate, const mate::Dictionary& options) {
1664   return mate::CreateHandle(isolate, new WebContents(isolate, options));
1665 }
1666
1667 }  // namespace api
1668
1669 }  // namespace atom
1670
1671 namespace {
1672
1673 using atom::api::WebContents;
1674
1675 void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
1676                 v8::Local<v8::Context> context, void* priv) {
1677   v8::Isolate* isolate = context->GetIsolate();
1678   mate::Dictionary dict(isolate, exports);
1679   dict.Set("WebContents", WebContents::GetConstructor(isolate)->GetFunction());
1680   dict.SetMethod("create", &WebContents::Create);
1681   dict.SetMethod("fromId", &mate::TrackableObject<WebContents>::FromWeakMapID);
1682   dict.SetMethod("getAllWebContents",
1683                  &mate::TrackableObject<WebContents>::GetAll);
1684 }
1685
1686 }  // namespace
1687
1688 NODE_MODULE_CONTEXT_AWARE_BUILTIN(atom_browser_web_contents, Initialize)