chrome/test/chromedriver/window_commands.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/test/chromedriver/window_commands.h"
   6
   7 #include <list>
   8 #include <string>
   9
  10 #include "base/callback.h"
  11 #include "base/strings/string_number_conversions.h"
  12 #include "base/strings/stringprintf.h"
  13 #include "base/threading/platform_thread.h"
  14 #include "base/time/time.h"
  15 #include "base/values.h"
  16 #include "chrome/test/chromedriver/basic_types.h"
  17 #include "chrome/test/chromedriver/chrome/automation_extension.h"
  18 #include "chrome/test/chromedriver/chrome/browser_info.h"
  19 #include "chrome/test/chromedriver/chrome/chrome.h"
  20 #include "chrome/test/chromedriver/chrome/chrome_desktop_impl.h"
  21 #include "chrome/test/chromedriver/chrome/devtools_client.h"
  22 #include "chrome/test/chromedriver/chrome/geoposition.h"
  23 #include "chrome/test/chromedriver/chrome/javascript_dialog_manager.h"
  24 #include "chrome/test/chromedriver/chrome/js.h"
  25 #include "chrome/test/chromedriver/chrome/network_conditions.h"
  26 #include "chrome/test/chromedriver/chrome/status.h"
  27 #include "chrome/test/chromedriver/chrome/ui_events.h"
  28 #include "chrome/test/chromedriver/chrome/web_view.h"
  29 #include "chrome/test/chromedriver/element_util.h"
  30 #include "chrome/test/chromedriver/session.h"
  31 #include "chrome/test/chromedriver/util.h"
  32
  33 namespace {
  34
  35 Status GetMouseButton(const base::DictionaryValue& params,
  36                       MouseButton* button) {
  37   int button_num;
  38   if (!params.GetInteger("button", &button_num)) {
  39     button_num = 0;  // Default to left mouse button.
  40   } else if (button_num < 0 || button_num > 2) {
  41     return Status(kUnknownError,
  42                   base::StringPrintf("invalid button: %d", button_num));
  43   }
  44   *button = static_cast<MouseButton>(button_num);
  45   return Status(kOk);
  46 }
  47
  48 Status GetUrl(WebView* web_view, const std::string& frame, std::string* url) {
  49   scoped_ptr<base::Value> value;
  50   base::ListValue args;
  51   Status status = web_view->CallFunction(
  52       frame, "function() { return document.URL; }", args, &value);
  53   if (status.IsError())
  54     return status;
  55   if (!value->GetAsString(url))
  56     return Status(kUnknownError, "javascript failed to return the url");
  57   return Status(kOk);
  58 }
  59
  60 struct Cookie {
  61   Cookie(const std::string& name,
  62          const std::string& value,
  63          const std::string& domain,
  64          const std::string& path,
  65          double expiry,
  66          bool secure,
  67          bool session)
  68       : name(name), value(value), domain(domain), path(path), expiry(expiry),
  69         secure(secure), session(session) {}
  70
  71   std::string name;
  72   std::string value;
  73   std::string domain;
  74   std::string path;
  75   double expiry;
  76   bool secure;
  77   bool session;
  78 };
  79
  80 base::DictionaryValue* CreateDictionaryFrom(const Cookie& cookie) {
  81   base::DictionaryValue* dict = new base::DictionaryValue();
  82   dict->SetString("name", cookie.name);
  83   dict->SetString("value", cookie.value);
  84   if (!cookie.domain.empty())
  85     dict->SetString("domain", cookie.domain);
  86   if (!cookie.path.empty())
  87     dict->SetString("path", cookie.path);
  88   if (!cookie.session)
  89     dict->SetDouble("expiry", cookie.expiry);
  90   dict->SetBoolean("secure", cookie.secure);
  91   return dict;
  92 }
  93
  94 Status GetVisibleCookies(WebView* web_view,
  95                          std::list<Cookie>* cookies) {
  96   scoped_ptr<base::ListValue> internal_cookies;
  97   Status status = web_view->GetCookies(&internal_cookies);
  98   if (status.IsError())
  99     return status;
 100   std::list<Cookie> cookies_tmp;
 101   for (size_t i = 0; i < internal_cookies->GetSize(); ++i) {
 102     base::DictionaryValue* cookie_dict;
 103     if (!internal_cookies->GetDictionary(i, &cookie_dict))
 104       return Status(kUnknownError, "DevTools returns a non-dictionary cookie");
 105
 106     std::string name;
 107     cookie_dict->GetString("name", &name);
 108     std::string value;
 109     cookie_dict->GetString("value", &value);
 110     std::string domain;
 111     cookie_dict->GetString("domain", &domain);
 112     std::string path;
 113     cookie_dict->GetString("path", &path);
 114     double expiry = 0;
 115     cookie_dict->GetDouble("expires", &expiry);
 116     expiry /= 1000;  // Convert from millisecond to second.
 117     bool session = false;
 118     cookie_dict->GetBoolean("session", &session);
 119     bool secure = false;
 120     cookie_dict->GetBoolean("secure", &secure);
 121
 122     cookies_tmp.push_back(
 123         Cookie(name, value, domain, path, expiry, secure, session));
 124   }
 125   cookies->swap(cookies_tmp);
 126   return Status(kOk);
 127 }
 128
 129 Status ScrollCoordinateInToView(
 130     Session* session, WebView* web_view, int x, int y, int* offset_x,
 131     int* offset_y) {
 132   scoped_ptr<base::Value> value;
 133   base::ListValue args;
 134   args.AppendInteger(x);
 135   args.AppendInteger(y);
 136   Status status = web_view->CallFunction(
 137       std::string(),
 138       "function(x, y) {"
 139       "  if (x < window.pageXOffset ||"
 140       "      x >= window.pageXOffset + window.innerWidth ||"
 141       "      y < window.pageYOffset ||"
 142       "      y >= window.pageYOffset + window.innerHeight) {"
 143       "    window.scrollTo(x - window.innerWidth/2, y - window.innerHeight/2);"
 144       "  }"
 145       "  return {"
 146       "    view_x: Math.floor(window.pageXOffset),"
 147       "    view_y: Math.floor(window.pageYOffset),"
 148       "    view_width: Math.floor(window.innerWidth),"
 149       "    view_height: Math.floor(window.innerHeight)};"
 150       "}",
 151       args,
 152       &value);
 153   if (!status.IsOk())
 154     return status;
 155   base::DictionaryValue* view_attrib;
 156   value->GetAsDictionary(&view_attrib);
 157   int view_x, view_y, view_width, view_height;
 158   view_attrib->GetInteger("view_x", &view_x);
 159   view_attrib->GetInteger("view_y", &view_y);
 160   view_attrib->GetInteger("view_width", &view_width);
 161   view_attrib->GetInteger("view_height", &view_height);
 162   *offset_x = x - view_x;
 163   *offset_y = y - view_y;
 164   if (*offset_x < 0 || *offset_x >= view_width || *offset_y < 0 ||
 165       *offset_y >= view_height)
 166     return Status(kUnknownError, "Failed to scroll coordinate into view");
 167   return Status(kOk);
 168 }
 169
 170 Status ExecuteTouchEvent(
 171     Session* session, WebView* web_view, TouchEventType type,
 172     const base::DictionaryValue& params) {
 173   int x, y;
 174   if (!params.GetInteger("x", &x))
 175     return Status(kUnknownError, "'x' must be an integer");
 176   if (!params.GetInteger("y", &y))
 177     return Status(kUnknownError, "'y' must be an integer");
 178   int relative_x = x;
 179   int relative_y = y;
 180   Status status = ScrollCoordinateInToView(
 181       session, web_view, x, y, &relative_x, &relative_y);
 182   if (!status.IsOk())
 183     return status;
 184   std::list<TouchEvent> events;
 185   events.push_back(
 186       TouchEvent(type, relative_x, relative_y));
 187   return web_view->DispatchTouchEvents(events);
 188 }
 189
 190 }  // namespace
 191
 192 Status ExecuteWindowCommand(
 193     const WindowCommand& command,
 194     Session* session,
 195     const base::DictionaryValue& params,
 196     scoped_ptr<base::Value>* value) {
 197   WebView* web_view = NULL;
 198   Status status = session->GetTargetWindow(&web_view);
 199   if (status.IsError())
 200     return status;
 201
 202   status = web_view->ConnectIfNecessary();
 203   if (status.IsError())
 204     return status;
 205
 206   status = web_view->HandleReceivedEvents();
 207   if (status.IsError())
 208     return status;
 209
 210   if (web_view->GetJavaScriptDialogManager()->IsDialogOpen())
 211     return Status(kUnexpectedAlertOpen);
 212
 213   Status nav_status(kOk);
 214   for (int attempt = 0; attempt < 3; attempt++) {
 215     if (attempt == 2) {
 216       // Switch to main frame and retry command if subframe no longer exists.
 217       session->SwitchToTopFrame();
 218     }
 219
 220     nav_status = web_view->WaitForPendingNavigations(
 221         session->GetCurrentFrameId(), session->page_load_timeout, true);
 222     if (nav_status.IsError())
 223       return nav_status;
 224
 225     status = command.Run(session, web_view, params, value);
 226     if (status.code() != kNoSuchExecutionContext)
 227       break;
 228   }
 229
 230   nav_status = web_view->WaitForPendingNavigations(
 231       session->GetCurrentFrameId(), session->page_load_timeout, true);
 232
 233   if (status.IsOk() && nav_status.IsError() &&
 234       nav_status.code() != kUnexpectedAlertOpen)
 235     return nav_status;
 236   if (status.code() == kUnexpectedAlertOpen)
 237     return Status(kOk);
 238   return status;
 239 }
 240
 241 Status ExecuteGet(
 242     Session* session,
 243     WebView* web_view,
 244     const base::DictionaryValue& params,
 245     scoped_ptr<base::Value>* value) {
 246   std::string url;
 247   if (!params.GetString("url", &url))
 248     return Status(kUnknownError, "'url' must be a string");
 249   Status status = web_view->Load(url);
 250   if (status.IsError())
 251     return status;
 252   session->SwitchToTopFrame();
 253   return Status(kOk);
 254 }
 255
 256 Status ExecuteExecuteScript(
 257     Session* session,
 258     WebView* web_view,
 259     const base::DictionaryValue& params,
 260     scoped_ptr<base::Value>* value) {
 261   std::string script;
 262   if (!params.GetString("script", &script))
 263     return Status(kUnknownError, "'script' must be a string");
 264   if (script == ":takeHeapSnapshot") {
 265     return web_view->TakeHeapSnapshot(value);
 266   } else if (script == ":startProfile") {
 267     return web_view->StartProfile();
 268   } else if (script == ":endProfile") {
 269     return web_view->EndProfile(value);
 270   } else {
 271     const base::ListValue* args;
 272     if (!params.GetList("args", &args))
 273       return Status(kUnknownError, "'args' must be a list");
 274
 275     return web_view->CallFunction(session->GetCurrentFrameId(),
 276                                   "function(){" + script + "}", *args, value);
 277   }
 278 }
 279
 280 Status ExecuteExecuteAsyncScript(
 281     Session* session,
 282     WebView* web_view,
 283     const base::DictionaryValue& params,
 284     scoped_ptr<base::Value>* value) {
 285   std::string script;
 286   if (!params.GetString("script", &script))
 287     return Status(kUnknownError, "'script' must be a string");
 288   const base::ListValue* args;
 289   if (!params.GetList("args", &args))
 290     return Status(kUnknownError, "'args' must be a list");
 291
 292   return web_view->CallUserAsyncFunction(
 293       session->GetCurrentFrameId(), "function(){" + script + "}", *args,
 294       session->script_timeout, value);
 295 }
 296
 297 Status ExecuteSwitchToFrame(
 298     Session* session,
 299     WebView* web_view,
 300     const base::DictionaryValue& params,
 301     scoped_ptr<base::Value>* value) {
 302   const base::Value* id;
 303   if (!params.Get("id", &id))
 304     return Status(kUnknownError, "missing 'id'");
 305
 306   if (id->IsType(base::Value::TYPE_NULL)) {
 307     session->SwitchToTopFrame();
 308     return Status(kOk);
 309   }
 310
 311   std::string script;
 312   base::ListValue args;
 313   const base::DictionaryValue* id_dict;
 314   if (id->GetAsDictionary(&id_dict)) {
 315     script = "function(elem) { return elem; }";
 316     args.Append(id_dict->DeepCopy());
 317   } else {
 318     script =
 319         "function(xpath) {"
 320         "  return document.evaluate(xpath, document, null, "
 321         "      XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;"
 322         "}";
 323     std::string xpath = "(/html/body//iframe|/html/frameset/frame)";
 324     std::string id_string;
 325     int id_int;
 326     if (id->GetAsString(&id_string)) {
 327       xpath += base::StringPrintf(
 328           "[@name=\"%s\" or @id=\"%s\"]", id_string.c_str(), id_string.c_str());
 329     } else if (id->GetAsInteger(&id_int)) {
 330       xpath += base::StringPrintf("[%d]", id_int + 1);
 331     } else {
 332       return Status(kUnknownError, "invalid 'id'");
 333     }
 334     args.Append(new base::StringValue(xpath));
 335   }
 336   std::string frame;
 337   Status status = web_view->GetFrameByFunction(
 338       session->GetCurrentFrameId(), script, args, &frame);
 339   if (status.IsError())
 340     return status;
 341
 342   scoped_ptr<base::Value> result;
 343   status = web_view->CallFunction(
 344       session->GetCurrentFrameId(), script, args, &result);
 345   if (status.IsError())
 346     return status;
 347   const base::DictionaryValue* element;
 348   if (!result->GetAsDictionary(&element))
 349     return Status(kUnknownError, "fail to locate the sub frame element");
 350
 351   std::string chrome_driver_id = GenerateId();
 352   const char kSetFrameIdentifier[] =
 353       "function(frame, id) {"
 354       "  frame.setAttribute('cd_frame_id_', id);"
 355       "}";
 356   base::ListValue new_args;
 357   new_args.Append(element->DeepCopy());
 358   new_args.AppendString(chrome_driver_id);
 359   result.reset(NULL);
 360   status = web_view->CallFunction(
 361       session->GetCurrentFrameId(), kSetFrameIdentifier, new_args, &result);
 362   if (status.IsError())
 363     return status;
 364   session->SwitchToSubFrame(frame, chrome_driver_id);
 365   return Status(kOk);
 366 }
 367
 368 Status ExecuteSwitchToParentFrame(
 369     Session* session,
 370     WebView* web_view,
 371     const base::DictionaryValue& params,
 372     scoped_ptr<base::Value>* value) {
 373   session->SwitchToParentFrame();
 374   return Status(kOk);
 375 }
 376
 377 Status ExecuteGetTitle(
 378     Session* session,
 379     WebView* web_view,
 380     const base::DictionaryValue& params,
 381     scoped_ptr<base::Value>* value) {
 382   const char kGetTitleScript[] =
 383       "function() {"
 384       "  if (document.title)"
 385       "    return document.title;"
 386       "  else"
 387       "    return document.URL;"
 388       "}";
 389   base::ListValue args;
 390   return web_view->CallFunction(std::string(), kGetTitleScript, args, value);
 391 }
 392
 393 Status ExecuteGetPageSource(
 394     Session* session,
 395     WebView* web_view,
 396     const base::DictionaryValue& params,
 397     scoped_ptr<base::Value>* value) {
 398   const char kGetPageSource[] =
 399       "function() {"
 400       "  return new XMLSerializer().serializeToString(document);"
 401       "}";
 402   base::ListValue args;
 403   return web_view->CallFunction(
 404       session->GetCurrentFrameId(), kGetPageSource, args, value);
 405 }
 406
 407 Status ExecuteFindElement(
 408     int interval_ms,
 409     Session* session,
 410     WebView* web_view,
 411     const base::DictionaryValue& params,
 412     scoped_ptr<base::Value>* value) {
 413   return FindElement(interval_ms, true, NULL, session, web_view, params, value);
 414 }
 415
 416 Status ExecuteFindElements(
 417     int interval_ms,
 418     Session* session,
 419     WebView* web_view,
 420     const base::DictionaryValue& params,
 421     scoped_ptr<base::Value>* value) {
 422   return FindElement(
 423       interval_ms, false, NULL, session, web_view, params, value);
 424 }
 425
 426 Status ExecuteGetCurrentUrl(
 427     Session* session,
 428     WebView* web_view,
 429     const base::DictionaryValue& params,
 430     scoped_ptr<base::Value>* value) {
 431   std::string url;
 432   Status status = GetUrl(web_view, session->GetCurrentFrameId(), &url);
 433   if (status.IsError())
 434     return status;
 435   value->reset(new base::StringValue(url));
 436   return Status(kOk);
 437 }
 438
 439 Status ExecuteGoBack(
 440     Session* session,
 441     WebView* web_view,
 442     const base::DictionaryValue& params,
 443     scoped_ptr<base::Value>* value) {
 444   Status status = web_view->TraverseHistory(-1);
 445   if (status.IsError())
 446     return status;
 447   session->SwitchToTopFrame();
 448   return Status(kOk);
 449 }
 450
 451 Status ExecuteGoForward(
 452     Session* session,
 453     WebView* web_view,
 454     const base::DictionaryValue& params,
 455     scoped_ptr<base::Value>* value) {
 456   Status status = web_view->TraverseHistory(1);
 457   if (status.IsError())
 458     return status;
 459   session->SwitchToTopFrame();
 460   return Status(kOk);
 461 }
 462
 463 Status ExecuteRefresh(
 464     Session* session,
 465     WebView* web_view,
 466     const base::DictionaryValue& params,
 467     scoped_ptr<base::Value>* value) {
 468   Status status = web_view->Reload();
 469   if (status.IsError())
 470     return status;
 471   session->SwitchToTopFrame();
 472   return Status(kOk);
 473 }
 474
 475 Status ExecuteMouseMoveTo(
 476     Session* session,
 477     WebView* web_view,
 478     const base::DictionaryValue& params,
 479     scoped_ptr<base::Value>* value) {
 480   std::string element_id;
 481   bool has_element = params.GetString("element", &element_id);
 482   int x_offset = 0;
 483   int y_offset = 0;
 484   bool has_offset = params.GetInteger("xoffset", &x_offset) &&
 485       params.GetInteger("yoffset", &y_offset);
 486   if (!has_element && !has_offset)
 487     return Status(kUnknownError, "at least an element or offset should be set");
 488
 489   WebPoint location;
 490   if (has_element) {
 491     WebPoint offset(x_offset, y_offset);
 492     Status status = ScrollElementIntoView(session, web_view, element_id,
 493         has_offset ? &offset : nullptr, &location);
 494     if (status.IsError())
 495       return status;
 496   } else {
 497     location = session->mouse_position;
 498     if (has_offset)
 499       location.Offset(x_offset, y_offset);
 500   }
 501
 502   std::list<MouseEvent> events;
 503   events.push_back(
 504       MouseEvent(kMovedMouseEventType, kNoneMouseButton,
 505                  location.x, location.y, session->sticky_modifiers, 0));
 506   Status status =
 507       web_view->DispatchMouseEvents(events, session->GetCurrentFrameId());
 508   if (status.IsOk())
 509     session->mouse_position = location;
 510   return status;
 511 }
 512
 513 Status ExecuteMouseClick(
 514     Session* session,
 515     WebView* web_view,
 516     const base::DictionaryValue& params,
 517     scoped_ptr<base::Value>* value) {
 518   MouseButton button;
 519   Status status = GetMouseButton(params, &button);
 520   if (status.IsError())
 521     return status;
 522   std::list<MouseEvent> events;
 523   events.push_back(
 524       MouseEvent(kPressedMouseEventType, button,
 525                  session->mouse_position.x, session->mouse_position.y,
 526                  session->sticky_modifiers, 1));
 527   events.push_back(
 528       MouseEvent(kReleasedMouseEventType, button,
 529                  session->mouse_position.x, session->mouse_position.y,
 530                  session->sticky_modifiers, 1));
 531   return web_view->DispatchMouseEvents(events, session->GetCurrentFrameId());
 532 }
 533
 534 Status ExecuteMouseButtonDown(
 535     Session* session,
 536     WebView* web_view,
 537     const base::DictionaryValue& params,
 538     scoped_ptr<base::Value>* value) {
 539   MouseButton button;
 540   Status status = GetMouseButton(params, &button);
 541   if (status.IsError())
 542     return status;
 543   std::list<MouseEvent> events;
 544   events.push_back(
 545       MouseEvent(kPressedMouseEventType, button,
 546                  session->mouse_position.x, session->mouse_position.y,
 547                  session->sticky_modifiers, 1));
 548   return web_view->DispatchMouseEvents(events, session->GetCurrentFrameId());
 549 }
 550
 551 Status ExecuteMouseButtonUp(
 552     Session* session,
 553     WebView* web_view,
 554     const base::DictionaryValue& params,
 555     scoped_ptr<base::Value>* value) {
 556   MouseButton button;
 557   Status status = GetMouseButton(params, &button);
 558   if (status.IsError())
 559     return status;
 560   std::list<MouseEvent> events;
 561   events.push_back(
 562       MouseEvent(kReleasedMouseEventType, button,
 563                  session->mouse_position.x, session->mouse_position.y,
 564                  session->sticky_modifiers, 1));
 565   return web_view->DispatchMouseEvents(events, session->GetCurrentFrameId());
 566 }
 567
 568 Status ExecuteMouseDoubleClick(
 569     Session* session,
 570     WebView* web_view,
 571     const base::DictionaryValue& params,
 572     scoped_ptr<base::Value>* value) {
 573   MouseButton button;
 574   Status status = GetMouseButton(params, &button);
 575   if (status.IsError())
 576     return status;
 577   std::list<MouseEvent> events;
 578   events.push_back(
 579       MouseEvent(kPressedMouseEventType, button,
 580                  session->mouse_position.x, session->mouse_position.y,
 581                  session->sticky_modifiers, 2));
 582   events.push_back(
 583       MouseEvent(kReleasedMouseEventType, button,
 584                  session->mouse_position.x, session->mouse_position.y,
 585                  session->sticky_modifiers, 2));
 586   return web_view->DispatchMouseEvents(events, session->GetCurrentFrameId());
 587 }
 588
 589 Status ExecuteTouchDown(
 590     Session* session,
 591     WebView* web_view,
 592     const base::DictionaryValue& params,
 593     scoped_ptr<base::Value>* value) {
 594   return ExecuteTouchEvent(session, web_view, kTouchStart, params);
 595 }
 596
 597 Status ExecuteTouchUp(
 598     Session* session,
 599     WebView* web_view,
 600     const base::DictionaryValue& params,
 601     scoped_ptr<base::Value>* value) {
 602   return ExecuteTouchEvent(session, web_view, kTouchEnd, params);
 603 }
 604
 605 Status ExecuteTouchMove(
 606     Session* session,
 607     WebView* web_view,
 608     const base::DictionaryValue& params,
 609     scoped_ptr<base::Value>* value) {
 610   return ExecuteTouchEvent(session, web_view, kTouchMove, params);
 611 }
 612
 613 Status ExecuteTouchScroll(
 614     Session *session,
 615     WebView* web_view,
 616     const base::DictionaryValue& params,
 617     scoped_ptr<base::Value>* value) {
 618   if (session->chrome->GetBrowserInfo()->build_no < 2286) {
 619     // TODO(samuong): remove this once we stop supporting M41.
 620     return Status(kUnknownCommand, "Touch scroll action requires Chrome 42+");
 621   }
 622   WebPoint location = session->mouse_position;
 623   std::string element;
 624   if (params.GetString("element", &element)) {
 625     Status status = GetElementClickableLocation(
 626         session, web_view, element, &location);
 627     if (status.IsError())
 628       return status;
 629   }
 630   int xoffset;
 631   if (!params.GetInteger("xoffset", &xoffset))
 632     return Status(kUnknownError, "'xoffset' must be an integer");
 633   int yoffset;
 634   if (!params.GetInteger("yoffset", &yoffset))
 635     return Status(kUnknownError, "'yoffset' must be an integer");
 636   return web_view->SynthesizeScrollGesture(
 637       location.x, location.y, xoffset, yoffset);
 638 }
 639
 640 Status ExecuteTouchPinch(
 641     Session* session,
 642     WebView* web_view,
 643     const base::DictionaryValue& params,
 644     scoped_ptr<base::Value>* value) {
 645   if (session->chrome->GetBrowserInfo()->build_no < 2286) {
 646     // TODO(samuong): remove this once we stop supporting M41.
 647     return Status(kUnknownCommand, "Pinch action requires Chrome 42+");
 648   }
 649   WebPoint location;
 650   if (!params.GetInteger("x", &location.x))
 651     return Status(kUnknownError, "'x' must be an integer");
 652   if (!params.GetInteger("y", &location.y))
 653     return Status(kUnknownError, "'y' must be an integer");
 654   double scale_factor;
 655   if (!params.GetDouble("scale", &scale_factor))
 656     return Status(kUnknownError, "'scale' must be an integer");
 657   return web_view->SynthesizePinchGesture(location.x, location.y, scale_factor);
 658 }
 659
 660 Status ExecuteGetActiveElement(
 661     Session* session,
 662     WebView* web_view,
 663     const base::DictionaryValue& params,
 664     scoped_ptr<base::Value>* value) {
 665   return GetActiveElement(session, web_view, value);
 666 }
 667
 668 Status ExecuteSendKeysToActiveElement(
 669     Session* session,
 670     WebView* web_view,
 671     const base::DictionaryValue& params,
 672     scoped_ptr<base::Value>* value) {
 673   const base::ListValue* key_list;
 674   if (!params.GetList("value", &key_list))
 675     return Status(kUnknownError, "'value' must be a list");
 676   return SendKeysOnWindow(
 677       web_view, key_list, false, &session->sticky_modifiers);
 678 }
 679
 680 Status ExecuteGetAppCacheStatus(
 681     Session* session,
 682     WebView* web_view,
 683     const base::DictionaryValue& params,
 684     scoped_ptr<base::Value>* value) {
 685   return web_view->EvaluateScript(
 686       session->GetCurrentFrameId(),
 687       "applicationCache.status",
 688       value);
 689 }
 690
 691 Status ExecuteIsBrowserOnline(
 692     Session* session,
 693     WebView* web_view,
 694     const base::DictionaryValue& params,
 695     scoped_ptr<base::Value>* value) {
 696   return web_view->EvaluateScript(
 697       session->GetCurrentFrameId(),
 698       "navigator.onLine",
 699       value);
 700 }
 701
 702 Status ExecuteGetStorageItem(
 703     const char* storage,
 704     Session* session,
 705     WebView* web_view,
 706     const base::DictionaryValue& params,
 707     scoped_ptr<base::Value>* value) {
 708   std::string key;
 709   if (!params.GetString("key", &key))
 710     return Status(kUnknownError, "'key' must be a string");
 711   base::ListValue args;
 712   args.Append(new base::StringValue(key));
 713   return web_view->CallFunction(
 714       session->GetCurrentFrameId(),
 715       base::StringPrintf("function(key) { return %s[key]; }", storage),
 716       args,
 717       value);
 718 }
 719
 720 Status ExecuteGetStorageKeys(
 721     const char* storage,
 722     Session* session,
 723     WebView* web_view,
 724     const base::DictionaryValue& params,
 725     scoped_ptr<base::Value>* value) {
 726   const char script[] =
 727       "var keys = [];"
 728       "for (var key in %s) {"
 729       "  keys.push(key);"
 730       "}"
 731       "keys";
 732   return web_view->EvaluateScript(
 733       session->GetCurrentFrameId(),
 734       base::StringPrintf(script, storage),
 735       value);
 736 }
 737
 738 Status ExecuteSetStorageItem(
 739     const char* storage,
 740     Session* session,
 741     WebView* web_view,
 742     const base::DictionaryValue& params,
 743     scoped_ptr<base::Value>* value) {
 744   std::string key;
 745   if (!params.GetString("key", &key))
 746     return Status(kUnknownError, "'key' must be a string");
 747   std::string storage_value;
 748   if (!params.GetString("value", &storage_value))
 749     return Status(kUnknownError, "'value' must be a string");
 750   base::ListValue args;
 751   args.Append(new base::StringValue(key));
 752   args.Append(new base::StringValue(storage_value));
 753   return web_view->CallFunction(
 754       session->GetCurrentFrameId(),
 755       base::StringPrintf("function(key, value) { %s[key] = value; }", storage),
 756       args,
 757       value);
 758 }
 759
 760 Status ExecuteRemoveStorageItem(
 761     const char* storage,
 762     Session* session,
 763     WebView* web_view,
 764     const base::DictionaryValue& params,
 765     scoped_ptr<base::Value>* value) {
 766   std::string key;
 767   if (!params.GetString("key", &key))
 768     return Status(kUnknownError, "'key' must be a string");
 769   base::ListValue args;
 770   args.Append(new base::StringValue(key));
 771   return web_view->CallFunction(
 772       session->GetCurrentFrameId(),
 773       base::StringPrintf("function(key) { %s.removeItem(key) }", storage),
 774       args,
 775       value);
 776 }
 777
 778 Status ExecuteClearStorage(
 779     const char* storage,
 780     Session* session,
 781     WebView* web_view,
 782     const base::DictionaryValue& params,
 783     scoped_ptr<base::Value>* value) {
 784   return web_view->EvaluateScript(
 785       session->GetCurrentFrameId(),
 786       base::StringPrintf("%s.clear()", storage),
 787       value);
 788 }
 789
 790 Status ExecuteGetStorageSize(
 791     const char* storage,
 792     Session* session,
 793     WebView* web_view,
 794     const base::DictionaryValue& params,
 795     scoped_ptr<base::Value>* value) {
 796   return web_view->EvaluateScript(
 797       session->GetCurrentFrameId(),
 798       base::StringPrintf("%s.length", storage),
 799       value);
 800 }
 801
 802 Status ExecuteScreenshot(
 803     Session* session,
 804     WebView* web_view,
 805     const base::DictionaryValue& params,
 806     scoped_ptr<base::Value>* value) {
 807   Status status = session->chrome->ActivateWebView(web_view->GetId());
 808   if (status.IsError())
 809     return status;
 810
 811   std::string screenshot;
 812   ChromeDesktopImpl* desktop = NULL;
 813   status = session->chrome->GetAsDesktop(&desktop);
 814   if (status.IsOk() && !session->force_devtools_screenshot) {
 815     AutomationExtension* extension = NULL;
 816     status = desktop->GetAutomationExtension(&extension);
 817     if (status.IsError())
 818       return status;
 819     status = extension->CaptureScreenshot(&screenshot);
 820     if (status.IsError()) {
 821       LOG(WARNING) << "screenshot failed with extension, fallback to DevTools";
 822       status = web_view->CaptureScreenshot(&screenshot);
 823     }
 824   } else {
 825     status = web_view->CaptureScreenshot(&screenshot);
 826   }
 827   if (status.IsError())
 828     return status;
 829
 830   value->reset(new base::StringValue(screenshot));
 831   return Status(kOk);
 832 }
 833
 834 Status ExecuteGetCookies(
 835     Session* session,
 836     WebView* web_view,
 837     const base::DictionaryValue& params,
 838     scoped_ptr<base::Value>* value) {
 839   std::list<Cookie> cookies;
 840   Status status = GetVisibleCookies(web_view, &cookies);
 841   if (status.IsError())
 842     return status;
 843   scoped_ptr<base::ListValue> cookie_list(new base::ListValue());
 844   for (std::list<Cookie>::const_iterator it = cookies.begin();
 845        it != cookies.end(); ++it) {
 846     cookie_list->Append(CreateDictionaryFrom(*it));
 847   }
 848   value->reset(cookie_list.release());
 849   return Status(kOk);
 850 }
 851
 852 Status ExecuteAddCookie(
 853     Session* session,
 854     WebView* web_view,
 855     const base::DictionaryValue& params,
 856     scoped_ptr<base::Value>* value) {
 857   const base::DictionaryValue* cookie;
 858   if (!params.GetDictionary("cookie", &cookie))
 859     return Status(kUnknownError, "missing 'cookie'");
 860   base::ListValue args;
 861   args.Append(cookie->DeepCopy());
 862   scoped_ptr<base::Value> result;
 863   return web_view->CallFunction(
 864       session->GetCurrentFrameId(), kAddCookieScript, args, &result);
 865 }
 866
 867 Status ExecuteDeleteCookie(
 868     Session* session,
 869     WebView* web_view,
 870     const base::DictionaryValue& params,
 871     scoped_ptr<base::Value>* value) {
 872   std::string name;
 873   if (!params.GetString("name", &name))
 874     return Status(kUnknownError, "missing 'name'");
 875   base::DictionaryValue params_url;
 876   scoped_ptr<base::Value> value_url;
 877   std::string url;
 878   Status status = GetUrl(web_view, session->GetCurrentFrameId(), &url);
 879   if (status.IsError())
 880     return status;
 881   return web_view->DeleteCookie(name, url);
 882 }
 883
 884 Status ExecuteDeleteAllCookies(
 885     Session* session,
 886     WebView* web_view,
 887     const base::DictionaryValue& params,
 888     scoped_ptr<base::Value>* value) {
 889   std::list<Cookie> cookies;
 890   Status status = GetVisibleCookies(web_view, &cookies);
 891   if (status.IsError())
 892     return status;
 893
 894   if (!cookies.empty()) {
 895     base::DictionaryValue params_url;
 896     scoped_ptr<base::Value> value_url;
 897     std::string url;
 898     status = GetUrl(web_view, session->GetCurrentFrameId(), &url);
 899     if (status.IsError())
 900       return status;
 901     for (std::list<Cookie>::const_iterator it = cookies.begin();
 902          it != cookies.end(); ++it) {
 903       status = web_view->DeleteCookie(it->name, url);
 904       if (status.IsError())
 905         return status;
 906     }
 907   }
 908
 909   return Status(kOk);
 910 }
 911
 912 Status ExecuteSetLocation(
 913     Session* session,
 914     WebView* web_view,
 915     const base::DictionaryValue& params,
 916     scoped_ptr<base::Value>* value) {
 917   const base::DictionaryValue* location = NULL;
 918   Geoposition geoposition;
 919   if (!params.GetDictionary("location", &location) ||
 920       !location->GetDouble("latitude", &geoposition.latitude) ||
 921       !location->GetDouble("longitude", &geoposition.longitude))
 922     return Status(kUnknownError, "missing or invalid 'location'");
 923   if (location->HasKey("accuracy") &&
 924       !location->GetDouble("accuracy", &geoposition.accuracy)) {
 925     return Status(kUnknownError, "invalid 'accuracy'");
 926   } else {
 927     // |accuracy| is not part of the WebDriver spec yet, so if it is not given
 928     // default to 100 meters accuracy.
 929     geoposition.accuracy = 100;
 930   }
 931
 932   Status status = web_view->OverrideGeolocation(geoposition);
 933   if (status.IsOk())
 934     session->overridden_geoposition.reset(new Geoposition(geoposition));
 935   return status;
 936 }
 937
 938 Status ExecuteSetNetworkConditions(
 939     Session* session,
 940     WebView* web_view,
 941     const base::DictionaryValue& params,
 942     scoped_ptr<base::Value>* value) {
 943   std::string network_name;
 944   const base::DictionaryValue* conditions = NULL;
 945   scoped_ptr<NetworkConditions> network_conditions(new NetworkConditions());
 946   if (params.GetString("network_name", &network_name)) {
 947     // Get conditions from preset list.
 948     Status status = FindPresetNetwork(network_name, network_conditions.get());
 949     if (status.IsError())
 950       return status;
 951   } else if (params.GetDictionary("network_conditions", &conditions)) {
 952     // |latency| is required.
 953     if (!conditions->GetDouble("latency", &network_conditions->latency))
 954       return Status(kUnknownError,
 955                     "invalid 'network_conditions' is missing 'latency'");
 956
 957     // Either |throughput| or the pair |download_throughput| and
 958     // |upload_throughput| is required.
 959     if (conditions->HasKey("throughput")) {
 960       if (!conditions->GetDouble("throughput",
 961                                  &network_conditions->download_throughput))
 962         return Status(kUnknownError, "invalid 'throughput'");
 963       conditions->GetDouble("throughput",
 964                             &network_conditions->upload_throughput);
 965     } else if (conditions->HasKey("download_throughput") &&
 966                conditions->HasKey("upload_throughput")) {
 967       if (!conditions->GetDouble("download_throughput",
 968                                  &network_conditions->download_throughput) ||
 969           !conditions->GetDouble("upload_throughput",
 970                                  &network_conditions->upload_throughput))
 971         return Status(kUnknownError,
 972                       "invalid 'download_throughput' or 'upload_throughput'");
 973     } else {
 974       return Status(kUnknownError,
 975                     "invalid 'network_conditions' is missing 'throughput' or "
 976                     "'download_throughput'/'upload_throughput' pair");
 977     }
 978
 979     // |offline| is optional.
 980     if (conditions->HasKey("offline")) {
 981       if (!conditions->GetBoolean("offline", &network_conditions->offline))
 982         return Status(kUnknownError, "invalid 'offline'");
 983     } else {
 984       network_conditions->offline = false;
 985     }
 986   } else {
 987     return Status(kUnknownError,
 988                   "either 'network_conditions' or 'network_name' must be "
 989                   "supplied");
 990   }
 991
 992   session->overridden_network_conditions.reset(
 993       network_conditions.release());
 994   return web_view->OverrideNetworkConditions(
 995       *session->overridden_network_conditions);
 996 }
 997
 998 Status ExecuteDeleteNetworkConditions(
 999     Session* session,
1000     WebView* web_view,
1001     const base::DictionaryValue& params,
1002     scoped_ptr<base::Value>* value) {
1003   // Chrome does not have any command to stop overriding network conditions, so
1004   // we just override the network conditions with the "No throttling" preset.
1005   NetworkConditions network_conditions;
1006   // Get conditions from preset list.
1007   Status status = FindPresetNetwork("No throttling", &network_conditions);
1008   if (status.IsError())
1009     return status;
1010
1011   status = web_view->OverrideNetworkConditions(network_conditions);
1012   if (status.IsError())
1013     return status;
1014
1015   // After we've successfully overridden the network conditions with
1016   // "No throttling", we can delete them from |session|.
1017   session->overridden_network_conditions.reset();
1018   return status;
1019 }
1020
1021 Status ExecuteTakeHeapSnapshot(
1022     Session* session,
1023     WebView* web_view,
1024     const base::DictionaryValue& params,
1025     scoped_ptr<base::Value>* value) {
1026   return web_view->TakeHeapSnapshot(value);
1027 }