Source/WebKit2/UIProcess/WebPageProxy.cpp

   1 /*
   2  * Copyright (C) 2010, 2011, 2015 Apple Inc. All rights reserved.
   3  * Copyright (C) 2012 Intel Corporation. All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  15  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  16  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  18  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  19  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  20  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  21  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  22  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  23  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  24  * THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #include "config.h"
  28 #include "WebPageProxy.h"
  29
  30 #include "APIArray.h"
  31 #include "APIContextMenuClient.h"
  32 #include "APIFindClient.h"
  33 #include "APIFindMatchesClient.h"
  34 #include "APIFormClient.h"
  35 #include "APIFrameInfo.h"
  36 #include "APIGeometry.h"
  37 #include "APIHistoryClient.h"
  38 #include "APIHitTestResult.h"
  39 #include "APILegacyContextHistoryClient.h"
  40 #include "APILoaderClient.h"
  41 #include "APINavigation.h"
  42 #include "APINavigationAction.h"
  43 #include "APINavigationClient.h"
  44 #include "APINavigationResponse.h"
  45 #include "APIPageConfiguration.h"
  46 #include "APIPolicyClient.h"
  47 #include "APISecurityOrigin.h"
  48 #include "APIUIClient.h"
  49 #include "APIURLRequest.h"
  50 #include "AuthenticationChallengeProxy.h"
  51 #include "AuthenticationDecisionListener.h"
  52 #include "DataReference.h"
  53 #include "DownloadProxy.h"
  54 #include "DrawingAreaProxy.h"
  55 #include "DrawingAreaProxyMessages.h"
  56 #include "EventDispatcherMessages.h"
  57 #include "Logging.h"
  58 #include "NativeWebGestureEvent.h"
  59 #include "NativeWebKeyboardEvent.h"
  60 #include "NativeWebMouseEvent.h"
  61 #include "NativeWebWheelEvent.h"
  62 #include "NavigationActionData.h"
  63 #include "NetworkProcessMessages.h"
  64 #include "NotificationPermissionRequest.h"
  65 #include "NotificationPermissionRequestManager.h"
  66 #include "PageClient.h"
  67 #include "PluginInformation.h"
  68 #include "PluginProcessManager.h"
  69 #include "PrintInfo.h"
  70 #include "TextChecker.h"
  71 #include "TextCheckerState.h"
  72 #include "UserMediaPermissionRequestProxy.h"
  73 #include "WKContextPrivate.h"
  74 #include "WebBackForwardList.h"
  75 #include "WebBackForwardListItem.h"
  76 #include "WebCertificateInfo.h"
  77 #include "WebContextMenuItem.h"
  78 #include "WebContextMenuProxy.h"
  79 #include "WebCoreArgumentCoders.h"
  80 #include "WebEditCommandProxy.h"
  81 #include "WebEvent.h"
  82 #include "WebEventConversion.h"
  83 #include "WebFormSubmissionListenerProxy.h"
  84 #include "WebFramePolicyListenerProxy.h"
  85 #include "WebFullScreenManagerProxy.h"
  86 #include "WebFullScreenManagerProxyMessages.h"
  87 #include "WebImage.h"
  88 #include "WebInspectorProxy.h"
  89 #include "WebInspectorProxyMessages.h"
  90 #include "WebNavigationState.h"
  91 #include "WebNotificationManagerProxy.h"
  92 #include "WebOpenPanelParameters.h"
  93 #include "WebOpenPanelResultListenerProxy.h"
  94 #include "WebPageCreationParameters.h"
  95 #include "WebPageGroup.h"
  96 #include "WebPageGroupData.h"
  97 #include "WebPageMessages.h"
  98 #include "WebPageProxyMessages.h"
  99 #include "WebPopupItem.h"
 100 #include "WebPopupMenuProxy.h"
 101 #include "WebPreferences.h"
 102 #include "WebProcessMessages.h"
 103 #include "WebProcessPool.h"
 104 #include "WebProcessProxy.h"
 105 #include "WebProtectionSpace.h"
 106 #include "WebUserContentControllerProxy.h"
 107 #include "WebsiteDataStore.h"
 108 #include <WebCore/BitmapImage.h>
 109 #include <WebCore/DiagnosticLoggingClient.h>
 110 #include <WebCore/DragController.h>
 111 #include <WebCore/DragData.h>
 112 #include <WebCore/FloatRect.h>
 113 #include <WebCore/FocusDirection.h>
 114 #include <WebCore/JSDOMBinding.h>
 115 #include <WebCore/MIMETypeRegistry.h>
 116 #include <WebCore/RenderEmbeddedObject.h>
 117 #include <WebCore/SerializedCryptoKeyWrap.h>
 118 #include <WebCore/TextCheckerClient.h>
 119 #include <WebCore/TextIndicator.h>
 120 #include <WebCore/URL.h>
 121 #include <WebCore/WindowFeatures.h>
 122 #include <stdio.h>
 123 #include <wtf/NeverDestroyed.h>
 124 #include <wtf/text/StringView.h>
 125
 126 #if ENABLE(ASYNC_SCROLLING)
 127 #include "RemoteScrollingCoordinatorProxy.h"
 128 #endif
 129
 130 #if USE(COORDINATED_GRAPHICS_MULTIPROCESS)
 131 #include "CoordinatedLayerTreeHostProxyMessages.h"
 132 #endif
 133
 134 #if ENABLE(VIBRATION)
 135 #include "WebVibrationProxy.h"
 136 #endif
 137
 138 #ifndef NDEBUG
 139 #include <wtf/RefCountedLeakCounter.h>
 140 #endif
 141
 142 #if PLATFORM(COCOA)
 143 #include "RemoteLayerTreeDrawingAreaProxy.h"
 144 #include "RemoteLayerTreeScrollingPerformanceData.h"
 145 #include "ViewSnapshotStore.h"
 146 #include <WebCore/MachSendRight.h>
 147 #include <WebCore/RunLoopObserver.h>
 148 #include <WebCore/TextIndicatorWindow.h>
 149 #endif
 150
 151 #if PLATFORM(IOS)
 152 #include "WebVideoFullscreenManagerProxy.h"
 153 #include "WebVideoFullscreenManagerProxyMessages.h"
 154 #endif
 155
 156 #if USE(CAIRO)
 157 #include <WebCore/CairoUtilities.h>
 158 #endif
 159
 160 #if ENABLE(WIRELESS_PLAYBACK_TARGET) && !PLATFORM(IOS)
 161 #include <WebCore/MediaPlaybackTarget.h>
 162 #include <WebCore/WebMediaSessionManager.h>
 163 #endif
 164
 165 #if ENABLE(MEDIA_SESSION)
 166 #include "WebMediaSessionFocusManager.h"
 167 #include "WebMediaSessionMetadata.h"
 168 #include <WebCore/MediaSessionMetadata.h>
 169 #endif
 170
 171 // This controls what strategy we use for mouse wheel coalescing.
 172 #define MERGE_WHEEL_EVENTS 1
 173
 174 #define MESSAGE_CHECK(assertion) MESSAGE_CHECK_BASE(assertion, m_process->connection())
 175 #define MESSAGE_CHECK_URL(url) MESSAGE_CHECK_BASE(m_process->checkURLReceivedFromWebProcess(url), m_process->connection())
 176
 177 using namespace WebCore;
 178
 179 // Represents the number of wheel events we can hold in the queue before we start pushing them preemptively.
 180 static const unsigned wheelEventQueueSizeThreshold = 10;
 181
 182 namespace WebKit {
 183
 184 DEFINE_DEBUG_ONLY_GLOBAL(WTF::RefCountedLeakCounter, webPageProxyCounter, ("WebPageProxy"));
 185
 186 class ExceededDatabaseQuotaRecords {
 187     WTF_MAKE_NONCOPYABLE(ExceededDatabaseQuotaRecords); WTF_MAKE_FAST_ALLOCATED;
 188     friend class NeverDestroyed<ExceededDatabaseQuotaRecords>;
 189 public:
 190     struct Record {
 191         uint64_t frameID;
 192         String originIdentifier;
 193         String databaseName;
 194         String displayName;
 195         uint64_t currentQuota;
 196         uint64_t currentOriginUsage;
 197         uint64_t currentDatabaseUsage;
 198         uint64_t expectedUsage;
 199         RefPtr<Messages::WebPageProxy::ExceededDatabaseQuota::DelayedReply> reply;
 200     };
 201
 202     static ExceededDatabaseQuotaRecords& singleton();
 203
 204     std::unique_ptr<Record> createRecord(uint64_t frameID, String originIdentifier,
 205         String databaseName, String displayName, uint64_t currentQuota,
 206         uint64_t currentOriginUsage, uint64_t currentDatabaseUsage, uint64_t expectedUsage,
 207         PassRefPtr<Messages::WebPageProxy::ExceededDatabaseQuota::DelayedReply>);
 208
 209     void add(std::unique_ptr<Record>);
 210     bool areBeingProcessed() const { return !!m_currentRecord; }
 211     Record* next();
 212
 213 private:
 214     ExceededDatabaseQuotaRecords() { }
 215     ~ExceededDatabaseQuotaRecords() { }
 216
 217     Deque<std::unique_ptr<Record>> m_records;
 218     std::unique_ptr<Record> m_currentRecord;
 219 };
 220
 221 ExceededDatabaseQuotaRecords& ExceededDatabaseQuotaRecords::singleton()
 222 {
 223     static NeverDestroyed<ExceededDatabaseQuotaRecords> records;
 224     return records;
 225 }
 226
 227 std::unique_ptr<ExceededDatabaseQuotaRecords::Record> ExceededDatabaseQuotaRecords::createRecord(
 228     uint64_t frameID, String originIdentifier, String databaseName, String displayName,
 229     uint64_t currentQuota, uint64_t currentOriginUsage, uint64_t currentDatabaseUsage,
 230     uint64_t expectedUsage, PassRefPtr<Messages::WebPageProxy::ExceededDatabaseQuota::DelayedReply> reply)
 231 {
 232     auto record = std::make_unique<Record>();
 233     record->frameID = frameID;
 234     record->originIdentifier = originIdentifier;
 235     record->databaseName = databaseName;
 236     record->displayName = displayName;
 237     record->currentQuota = currentQuota;
 238     record->currentOriginUsage = currentOriginUsage;
 239     record->currentDatabaseUsage = currentDatabaseUsage;
 240     record->expectedUsage = expectedUsage;
 241     record->reply = reply;
 242     return WTF::move(record);
 243 }
 244
 245 void ExceededDatabaseQuotaRecords::add(std::unique_ptr<ExceededDatabaseQuotaRecords::Record> record)
 246 {
 247     m_records.append(WTF::move(record));
 248 }
 249
 250 ExceededDatabaseQuotaRecords::Record* ExceededDatabaseQuotaRecords::next()
 251 {
 252     m_currentRecord = nullptr;
 253     if (!m_records.isEmpty())
 254         m_currentRecord = m_records.takeFirst();
 255     return m_currentRecord.get();
 256 }
 257
 258 #if !LOG_DISABLED
 259 static const char* webKeyboardEventTypeString(WebEvent::Type type)
 260 {
 261     switch (type) {
 262     case WebEvent::KeyDown:
 263         return "KeyDown";
 264
 265     case WebEvent::KeyUp:
 266         return "KeyUp";
 267
 268     case WebEvent::RawKeyDown:
 269         return "RawKeyDown";
 270
 271     case WebEvent::Char:
 272         return "Char";
 273
 274     default:
 275         ASSERT_NOT_REACHED();
 276         return "<unknown>";
 277     }
 278 }
 279 #endif // !LOG_DISABLED
 280
 281 class PageClientProtector {
 282     WTF_MAKE_NONCOPYABLE(PageClientProtector);
 283 public:
 284     PageClientProtector(PageClient& pageClient)
 285         : m_pageClient(pageClient)
 286     {
 287         m_pageClient.refView();
 288     }
 289
 290     ~PageClientProtector()
 291     {
 292         m_pageClient.derefView();
 293     }
 294
 295 private:
 296     PageClient& m_pageClient;
 297 };
 298
 299 Ref<WebPageProxy> WebPageProxy::create(PageClient& pageClient, WebProcessProxy& process, uint64_t pageID, Ref<API::PageConfiguration>&& configuration)
 300 {
 301     return adoptRef(*new WebPageProxy(pageClient, process, pageID, WTF::move(configuration)));
 302 }
 303
 304 WebPageProxy::WebPageProxy(PageClient& pageClient, WebProcessProxy& process, uint64_t pageID, Ref<API::PageConfiguration>&& configuration)
 305     : m_pageClient(pageClient)
 306     , m_configuration(WTF::move(configuration))
 307     , m_loaderClient(std::make_unique<API::LoaderClient>())
 308     , m_policyClient(std::make_unique<API::PolicyClient>())
 309     , m_formClient(std::make_unique<API::FormClient>())
 310     , m_uiClient(std::make_unique<API::UIClient>())
 311     , m_findClient(std::make_unique<API::FindClient>())
 312     , m_findMatchesClient(std::make_unique<API::FindMatchesClient>())
 313     , m_diagnosticLoggingClient(std::make_unique<API::DiagnosticLoggingClient>())
 314 #if ENABLE(CONTEXT_MENUS)
 315     , m_contextMenuClient(std::make_unique<API::ContextMenuClient>())
 316 #endif
 317     , m_navigationState(std::make_unique<WebNavigationState>())
 318     , m_process(process)
 319     , m_pageGroup(*m_configuration->pageGroup())
 320     , m_preferences(*m_configuration->preferences())
 321     , m_userContentController(m_configuration->userContentController())
 322     , m_visitedLinkStore(*m_configuration->visitedLinkStore())
 323     , m_websiteDataStore(m_configuration->websiteDataStore()->websiteDataStore())
 324     , m_mainFrame(nullptr)
 325     , m_userAgent(standardUserAgent())
 326     , m_treatsSHA1CertificatesAsInsecure(m_configuration->treatsSHA1SignedCertificatesAsInsecure())
 327 #if PLATFORM(IOS)
 328     , m_hasReceivedLayerTreeTransactionAfterDidCommitLoad(true)
 329     , m_firstLayerTreeTransactionIdAfterDidCommitLoad(0)
 330     , m_deviceOrientation(0)
 331     , m_dynamicViewportSizeUpdateWaitingForTarget(false)
 332     , m_dynamicViewportSizeUpdateWaitingForLayerTreeCommit(false)
 333     , m_dynamicViewportSizeUpdateLayerTreeTransactionID(0)
 334     , m_layerTreeTransactionIdAtLastTouchStart(0)
 335     , m_hasNetworkRequestsOnSuspended(false)
 336 #endif
 337     , m_geolocationPermissionRequestManager(*this)
 338     , m_notificationPermissionRequestManager(*this)
 339     , m_userMediaPermissionRequestManager(*this)
 340     , m_viewState(ViewState::NoFlags)
 341     , m_viewWasEverInWindow(false)
 342 #if PLATFORM(IOS)
 343     , m_alwaysRunsAtForegroundPriority(m_configuration->alwaysRunsAtForegroundPriority())
 344 #endif
 345     , m_backForwardList(WebBackForwardList::create(*this))
 346     , m_maintainsInactiveSelection(false)
 347     , m_isEditable(false)
 348     , m_textZoomFactor(1)
 349     , m_pageZoomFactor(1)
 350     , m_pageScaleFactor(1)
 351     , m_pluginZoomFactor(1)
 352     , m_pluginScaleFactor(1)
 353     , m_intrinsicDeviceScaleFactor(1)
 354     , m_customDeviceScaleFactor(0)
 355     , m_topContentInset(0)
 356     , m_layerHostingMode(LayerHostingMode::InProcess)
 357     , m_drawsBackground(true)
 358     , m_useFixedLayout(false)
 359     , m_suppressScrollbarAnimations(false)
 360     , m_paginationMode(Pagination::Unpaginated)
 361     , m_paginationBehavesLikeColumns(false)
 362     , m_pageLength(0)
 363     , m_gapBetweenPages(0)
 364     , m_isValid(true)
 365     , m_isClosed(false)
 366     , m_canRunModal(false)
 367     , m_isInPrintingMode(false)
 368     , m_isPerformingDOMPrintOperation(false)
 369     , m_inDecidePolicyForResponseSync(false)
 370     , m_decidePolicyForResponseRequest(0)
 371     , m_syncMimeTypePolicyActionIsValid(false)
 372     , m_syncMimeTypePolicyAction(PolicyUse)
 373     , m_syncMimeTypePolicyDownloadID(0)
 374     , m_inDecidePolicyForNavigationAction(false)
 375     , m_syncNavigationActionPolicyActionIsValid(false)
 376     , m_syncNavigationActionPolicyAction(PolicyUse)
 377     , m_syncNavigationActionPolicyDownloadID(0)
 378     , m_processingMouseMoveEvent(false)
 379 #if ENABLE(TOUCH_EVENTS)
 380     , m_isTrackingTouchEvents(false)
 381 #endif
 382     , m_pageID(pageID)
 383     , m_sessionID(m_configuration->sessionID())
 384     , m_isPageSuspended(false)
 385     , m_addsVisitedLinks(true)
 386 #if ENABLE(REMOTE_INSPECTOR)
 387     , m_allowsRemoteInspection(true)
 388 #endif
 389 #if PLATFORM(COCOA)
 390     , m_isSmartInsertDeleteEnabled(TextChecker::isSmartInsertDeleteEnabled())
 391 #endif
 392 #if PLATFORM(GTK)
 393     , m_backgroundColor(Color::white)
 394 #endif
 395     , m_spellDocumentTag(0)
 396     , m_hasSpellDocumentTag(false)
 397     , m_pendingLearnOrIgnoreWordMessageCount(0)
 398     , m_mainFrameHasCustomContentProvider(false)
 399 #if ENABLE(DRAG_SUPPORT)
 400     , m_currentDragOperation(DragOperationNone)
 401     , m_currentDragIsOverFileInput(false)
 402     , m_currentDragNumberOfFilesToBeAccepted(0)
 403 #endif
 404     , m_pageLoadState(*this)
 405     , m_delegatesScrolling(false)
 406     , m_mainFrameHasHorizontalScrollbar(false)
 407     , m_mainFrameHasVerticalScrollbar(false)
 408     , m_canShortCircuitHorizontalWheelEvents(true)
 409     , m_mainFrameIsPinnedToLeftSide(true)
 410     , m_mainFrameIsPinnedToRightSide(true)
 411     , m_mainFrameIsPinnedToTopSide(true)
 412     , m_mainFrameIsPinnedToBottomSide(true)
 413     , m_shouldUseImplicitRubberBandControl(false)
 414     , m_rubberBandsAtLeft(true)
 415     , m_rubberBandsAtRight(true)
 416     , m_rubberBandsAtTop(true)
 417     , m_rubberBandsAtBottom(true)
 418     , m_enableVerticalRubberBanding(true)
 419     , m_enableHorizontalRubberBanding(true)
 420     , m_backgroundExtendsBeyondPage(false)
 421     , m_shouldRecordNavigationSnapshots(false)
 422     , m_isShowingNavigationGestureSnapshot(false)
 423     , m_pageCount(0)
 424     , m_renderTreeSize(0)
 425     , m_sessionRestorationRenderTreeSize(0)
 426     , m_wantsSessionRestorationRenderTreeSizeThresholdEvent(false)
 427     , m_hitRenderTreeSizeThreshold(false)
 428     , m_suppressVisibilityUpdates(false)
 429     , m_autoSizingShouldExpandToViewHeight(false)
 430     , m_mediaVolume(1)
 431     , m_muted(false)
 432     , m_mayStartMediaWhenInWindow(true)
 433     , m_waitingForDidUpdateViewState(false)
 434 #if PLATFORM(COCOA)
 435     , m_scrollPerformanceDataCollectionEnabled(false)
 436 #endif
 437     , m_scrollPinningBehavior(DoNotPin)
 438     , m_navigationID(0)
 439     , m_configurationPreferenceValues(m_configuration->preferenceValues())
 440     , m_potentiallyChangedViewStateFlags(ViewState::NoFlags)
 441     , m_viewStateChangeWantsSynchronousReply(false)
 442 {
 443     m_webProcessLifetimeTracker.addObserver(m_visitedLinkStore);
 444     m_webProcessLifetimeTracker.addObserver(m_websiteDataStore);
 445
 446     if (m_process->state() == WebProcessProxy::State::Running) {
 447         if (m_userContentController)
 448             m_process->addWebUserContentControllerProxy(*m_userContentController);
 449         m_process->addVisitedLinkStore(m_visitedLinkStore);
 450     }
 451
 452     updateViewState();
 453     updateActivityToken();
 454     updateProccessSuppressionState();
 455
 456 #if HAVE(OUT_OF_PROCESS_LAYER_HOSTING)
 457     m_layerHostingMode = m_viewState & ViewState::IsInWindow ? m_pageClient.viewLayerHostingMode() : LayerHostingMode::OutOfProcess;
 458 #endif
 459
 460     platformInitialize();
 461
 462 #ifndef NDEBUG
 463     webPageProxyCounter.increment();
 464 #endif
 465
 466     WebProcessPool::statistics().wkPageCount++;
 467
 468     m_preferences->addPage(*this);
 469     m_pageGroup->addPage(this);
 470
 471     m_inspector = WebInspectorProxy::create(this);
 472 #if ENABLE(FULLSCREEN_API)
 473     m_fullScreenManager = WebFullScreenManagerProxy::create(*this, m_pageClient.fullScreenManagerProxyClient());
 474 #endif
 475 #if PLATFORM(IOS)
 476     m_videoFullscreenManager = WebVideoFullscreenManagerProxy::create(*this);
 477 #endif
 478 #if ENABLE(VIBRATION)
 479     m_vibration = WebVibrationProxy::create(this);
 480 #endif
 481
 482     m_process->addMessageReceiver(Messages::WebPageProxy::messageReceiverName(), m_pageID, *this);
 483
 484     if (m_sessionID.isEphemeral())
 485         m_process->processPool().sendToNetworkingProcess(Messages::NetworkProcess::EnsurePrivateBrowsingSession(m_sessionID));
 486
 487 #if PLATFORM(COCOA)
 488     const CFIndex viewStateChangeRunLoopOrder = (CFIndex)RunLoopObserver::WellKnownRunLoopOrders::CoreAnimationCommit - 1;
 489     m_viewStateChangeDispatcher = RunLoopObserver::create(viewStateChangeRunLoopOrder, [this] {
 490         this->dispatchViewStateChange();
 491     });
 492 #endif
 493 }
 494
 495 WebPageProxy::~WebPageProxy()
 496 {
 497     ASSERT(m_process->webPage(m_pageID) != this);
 498 #if !ASSERT_DISABLED
 499     for (WebPageProxy* page : m_process->pages())
 500         ASSERT(page != this);
 501 #endif
 502
 503     if (!m_isClosed)
 504         close();
 505
 506     WebProcessPool::statistics().wkPageCount--;
 507
 508     if (m_hasSpellDocumentTag)
 509         TextChecker::closeSpellDocumentWithTag(m_spellDocumentTag);
 510
 511     m_preferences->removePage(*this);
 512     m_pageGroup->removePage(this);
 513
 514 #ifndef NDEBUG
 515     webPageProxyCounter.decrement();
 516 #endif
 517 }
 518
 519 const API::PageConfiguration& WebPageProxy::configuration() const
 520 {
 521     return m_configuration.get();
 522 }
 523
 524 PlatformProcessIdentifier WebPageProxy::processIdentifier() const
 525 {
 526     if (m_isClosed)
 527         return 0;
 528
 529     return m_process->processIdentifier();
 530 }
 531
 532 bool WebPageProxy::isValid() const
 533 {
 534     // A page that has been explicitly closed is never valid.
 535     if (m_isClosed)
 536         return false;
 537
 538     return m_isValid;
 539 }
 540
 541 void WebPageProxy::setPreferences(WebPreferences& preferences)
 542 {
 543     if (&preferences == m_preferences.ptr())
 544         return;
 545
 546     m_preferences->removePage(*this);
 547     m_preferences = preferences;
 548     m_preferences->addPage(*this);
 549
 550     preferencesDidChange();
 551 }
 552
 553 void WebPageProxy::setHistoryClient(std::unique_ptr<API::HistoryClient> historyClient)
 554 {
 555     m_historyClient = WTF::move(historyClient);
 556 }
 557
 558 void WebPageProxy::setNavigationClient(std::unique_ptr<API::NavigationClient> navigationClient)
 559 {
 560     m_navigationClient = WTF::move(navigationClient);
 561 }
 562
 563 void WebPageProxy::setLoaderClient(std::unique_ptr<API::LoaderClient> loaderClient)
 564 {
 565     if (!loaderClient) {
 566         m_loaderClient = std::make_unique<API::LoaderClient>();
 567         return;
 568     }
 569
 570     m_loaderClient = WTF::move(loaderClient);
 571 }
 572
 573 void WebPageProxy::setPolicyClient(std::unique_ptr<API::PolicyClient> policyClient)
 574 {
 575     if (!policyClient) {
 576         m_policyClient = std::make_unique<API::PolicyClient>();
 577         return;
 578     }
 579
 580     m_policyClient = WTF::move(policyClient);
 581 }
 582
 583 void WebPageProxy::setFormClient(std::unique_ptr<API::FormClient> formClient)
 584 {
 585     if (!formClient) {
 586         m_formClient = std::make_unique<API::FormClient>();
 587         return;
 588     }
 589
 590     m_formClient = WTF::move(formClient);
 591 }
 592
 593 void WebPageProxy::setUIClient(std::unique_ptr<API::UIClient> uiClient)
 594 {
 595     if (!uiClient) {
 596         m_uiClient = std::make_unique<API::UIClient>();
 597         return;
 598     }
 599
 600     m_uiClient = WTF::move(uiClient);
 601
 602     if (!isValid())
 603         return;
 604
 605     m_process->send(Messages::WebPage::SetCanRunBeforeUnloadConfirmPanel(m_uiClient->canRunBeforeUnloadConfirmPanel()), m_pageID);
 606     setCanRunModal(m_uiClient->canRunModal());
 607 }
 608
 609 void WebPageProxy::setFindClient(std::unique_ptr<API::FindClient> findClient)
 610 {
 611     if (!findClient) {
 612         m_findClient = std::make_unique<API::FindClient>();
 613         return;
 614     }
 615
 616     m_findClient = WTF::move(findClient);
 617 }
 618
 619 void WebPageProxy::setFindMatchesClient(std::unique_ptr<API::FindMatchesClient> findMatchesClient)
 620 {
 621     if (!findMatchesClient) {
 622         m_findMatchesClient = std::make_unique<API::FindMatchesClient>();
 623         return;
 624     }
 625
 626     m_findMatchesClient = WTF::move(findMatchesClient);
 627 }
 628
 629 void WebPageProxy::setDiagnosticLoggingClient(std::unique_ptr<API::DiagnosticLoggingClient> diagnosticLoggingClient)
 630 {
 631     if (!diagnosticLoggingClient) {
 632         m_diagnosticLoggingClient = std::make_unique<API::DiagnosticLoggingClient>();
 633         return;
 634     }
 635
 636     m_diagnosticLoggingClient = WTF::move(diagnosticLoggingClient);
 637 }
 638
 639 #if ENABLE(CONTEXT_MENUS)
 640 void WebPageProxy::setContextMenuClient(std::unique_ptr<API::ContextMenuClient> contextMenuClient)
 641 {
 642     if (!contextMenuClient) {
 643         m_contextMenuClient = std::make_unique<API::ContextMenuClient>();
 644         return;
 645     }
 646
 647     m_contextMenuClient = WTF::move(contextMenuClient);
 648 }
 649 #endif
 650
 651 void WebPageProxy::setInjectedBundleClient(const WKPageInjectedBundleClientBase* client)
 652 {
 653     if (!client) {
 654         m_injectedBundleClient = nullptr;
 655         return;
 656     }
 657
 658     m_injectedBundleClient = std::make_unique<WebPageInjectedBundleClient>();
 659     m_injectedBundleClient->initialize(client);
 660 }
 661
 662 void WebPageProxy::handleMessage(IPC::Connection& connection, const String& messageName, const WebKit::UserData& messageBody)
 663 {
 664     auto* webProcessProxy = WebProcessProxy::fromConnection(&connection);
 665     if (!webProcessProxy || !m_injectedBundleClient)
 666         return;
 667     m_injectedBundleClient->didReceiveMessageFromInjectedBundle(this, messageName, webProcessProxy->transformHandlesToObjects(messageBody.object()).get());
 668 }
 669
 670 void WebPageProxy::handleSynchronousMessage(IPC::Connection& connection, const String& messageName, const UserData& messageBody, UserData& returnUserData)
 671 {
 672     if (!WebProcessProxy::fromConnection(&connection) || !m_injectedBundleClient)
 673         return;
 674
 675     RefPtr<API::Object> returnData;
 676     m_injectedBundleClient->didReceiveSynchronousMessageFromInjectedBundle(this, messageName, WebProcessProxy::fromConnection(&connection)->transformHandlesToObjects(messageBody.object()).get(), returnData);
 677     returnUserData = UserData(WebProcessProxy::fromConnection(&connection)->transformObjectsToHandles(returnData.get()));
 678 }
 679
 680
 681 void WebPageProxy::reattachToWebProcess()
 682 {
 683     ASSERT(!m_isClosed);
 684     ASSERT(!isValid());
 685     ASSERT(m_process->state() == WebProcessProxy::State::Terminated);
 686
 687     m_isValid = true;
 688     m_process->removeWebPage(m_pageID);
 689     m_process->removeMessageReceiver(Messages::WebPageProxy::messageReceiverName(), m_pageID);
 690
 691     m_process = m_process->processPool().createNewWebProcessRespectingProcessCountLimit();
 692
 693     ASSERT(m_process->state() != ChildProcessProxy::State::Terminated);
 694     if (m_process->state() == ChildProcessProxy::State::Running)
 695         processDidFinishLaunching();
 696     m_process->addExistingWebPage(this, m_pageID);
 697     m_process->addMessageReceiver(Messages::WebPageProxy::messageReceiverName(), m_pageID, *this);
 698
 699     updateViewState();
 700     updateActivityToken();
 701
 702     m_inspector = WebInspectorProxy::create(this);
 703 #if ENABLE(FULLSCREEN_API)
 704     m_fullScreenManager = WebFullScreenManagerProxy::create(*this, m_pageClient.fullScreenManagerProxyClient());
 705 #endif
 706 #if PLATFORM(IOS)
 707     m_videoFullscreenManager = WebVideoFullscreenManagerProxy::create(*this);
 708 #endif
 709
 710     initializeWebPage();
 711
 712     m_pageClient.didRelaunchProcess();
 713     m_drawingArea->waitForBackingStoreUpdateOnNextPaint();
 714 }
 715
 716 RefPtr<API::Navigation> WebPageProxy::reattachToWebProcessForReload()
 717 {
 718     if (m_isClosed)
 719         return nullptr;
 720
 721     ASSERT(!isValid());
 722     reattachToWebProcess();
 723
 724     if (!m_backForwardList->currentItem())
 725         return nullptr;
 726
 727     auto navigation = m_navigationState->createReloadNavigation();
 728
 729     // We allow stale content when reloading a WebProcess that's been killed or crashed.
 730     m_process->send(Messages::WebPage::GoToBackForwardItem(navigation->navigationID(), m_backForwardList->currentItem()->itemID()), m_pageID);
 731     m_process->responsivenessTimer().start();
 732
 733     return WTF::move(navigation);
 734 }
 735
 736 RefPtr<API::Navigation> WebPageProxy::reattachToWebProcessWithItem(WebBackForwardListItem* item)
 737 {
 738     if (m_isClosed)
 739         return nullptr;
 740
 741     if (item && item != m_backForwardList->currentItem())
 742         m_backForwardList->goToItem(item);
 743
 744     ASSERT(!isValid());
 745     reattachToWebProcess();
 746
 747     if (!item)
 748         return nullptr;
 749
 750     auto navigation = m_navigationState->createBackForwardNavigation();
 751
 752     m_process->send(Messages::WebPage::GoToBackForwardItem(navigation->navigationID(), item->itemID()), m_pageID);
 753     m_process->responsivenessTimer().start();
 754
 755     return WTF::move(navigation);
 756 }
 757
 758 void WebPageProxy::setSessionID(SessionID sessionID)
 759 {
 760     if (!isValid())
 761         return;
 762
 763     m_sessionID = sessionID;
 764     m_process->send(Messages::WebPage::SetSessionID(sessionID), m_pageID);
 765
 766     if (sessionID.isEphemeral())
 767         m_process->processPool().sendToNetworkingProcess(Messages::NetworkProcess::EnsurePrivateBrowsingSession(sessionID));
 768 }
 769
 770 void WebPageProxy::initializeWebPage()
 771 {
 772     ASSERT(isValid());
 773
 774     BackForwardListItemVector items = m_backForwardList->entries();
 775     for (size_t i = 0; i < items.size(); ++i)
 776         m_process->registerNewWebBackForwardListItem(items[i].get());
 777
 778     m_drawingArea = m_pageClient.createDrawingAreaProxy();
 779     ASSERT(m_drawingArea);
 780
 781 #if ENABLE(ASYNC_SCROLLING)
 782     if (m_drawingArea->type() == DrawingAreaTypeRemoteLayerTree) {
 783         m_scrollingCoordinatorProxy = std::make_unique<RemoteScrollingCoordinatorProxy>(*this);
 784 #if PLATFORM(IOS)
 785         // On iOS, main frame scrolls are sent in terms of visible rect updates.
 786         m_scrollingCoordinatorProxy->setPropagatesMainFrameScrolls(false);
 787 #endif
 788     }
 789 #endif
 790
 791 #if ENABLE(INSPECTOR_SERVER)
 792     if (m_preferences->developerExtrasEnabled())
 793         inspector()->enableRemoteInspection();
 794 #endif
 795
 796     process().send(Messages::WebProcess::CreateWebPage(m_pageID, creationParameters()), 0);
 797
 798 #if PLATFORM(COCOA)
 799     send(Messages::WebPage::SetSmartInsertDeleteEnabled(m_isSmartInsertDeleteEnabled));
 800 #endif
 801 }
 802
 803 void WebPageProxy::close()
 804 {
 805     if (m_isClosed)
 806         return;
 807
 808     m_isClosed = true;
 809
 810     if (m_activePopupMenu)
 811         m_activePopupMenu->cancelTracking();
 812
 813 #if ENABLE(CONTEXT_MENUS)
 814     m_activeContextMenu = nullptr;
 815 #endif
 816
 817     m_backForwardList->pageClosed();
 818     m_pageClient.pageClosed();
 819
 820     m_process->disconnectFramesFromPage(this);
 821
 822     resetState(ResetStateReason::PageInvalidated);
 823
 824     m_loaderClient = std::make_unique<API::LoaderClient>();
 825     m_policyClient = std::make_unique<API::PolicyClient>();
 826     m_formClient = std::make_unique<API::FormClient>();
 827     m_uiClient = std::make_unique<API::UIClient>();
 828 #if PLATFORM(EFL)
 829     m_uiPopupMenuClient.initialize(nullptr);
 830 #endif
 831     m_findClient = std::make_unique<API::FindClient>();
 832     m_findMatchesClient = std::make_unique<API::FindMatchesClient>();
 833     m_diagnosticLoggingClient = std::make_unique<API::DiagnosticLoggingClient>();
 834 #if ENABLE(CONTEXT_MENUS)
 835     m_contextMenuClient = std::make_unique<API::ContextMenuClient>();
 836 #endif
 837
 838     m_webProcessLifetimeTracker.pageWasInvalidated();
 839
 840     m_process->send(Messages::WebPage::Close(), m_pageID);
 841     m_process->removeWebPage(m_pageID);
 842     m_process->removeMessageReceiver(Messages::WebPageProxy::messageReceiverName(), m_pageID);
 843     m_process->processPool().supplement<WebNotificationManagerProxy>()->clearNotifications(this);
 844 }
 845
 846 bool WebPageProxy::tryClose()
 847 {
 848     if (!isValid())
 849         return true;
 850
 851     // Close without delay if the process allows it. Our goal is to terminate
 852     // the process, so we check a per-process status bit.
 853     if (m_process->isSuddenTerminationEnabled())
 854         return true;
 855
 856     m_process->send(Messages::WebPage::TryClose(), m_pageID);
 857     m_process->responsivenessTimer().start();
 858     return false;
 859 }
 860
 861 bool WebPageProxy::maybeInitializeSandboxExtensionHandle(const URL& url, SandboxExtension::Handle& sandboxExtensionHandle)
 862 {
 863     if (!url.isLocalFile())
 864         return false;
 865
 866     if (m_process->hasAssumedReadAccessToURL(url))
 867         return false;
 868
 869     // Inspector resources are in a directory with assumed access.
 870     ASSERT_WITH_SECURITY_IMPLICATION(!WebInspectorProxy::isInspectorPage(*this));
 871
 872     SandboxExtension::createHandle("/", SandboxExtension::ReadOnly, sandboxExtensionHandle);
 873     return true;
 874 }
 875
 876 RefPtr<API::Navigation> WebPageProxy::loadRequest(const ResourceRequest& request, ShouldOpenExternalURLsPolicy shouldOpenExternalURLsPolicy, API::Object* userData)
 877 {
 878     if (m_isClosed)
 879         return nullptr;
 880
 881     auto navigation = m_navigationState->createLoadRequestNavigation(request);
 882
 883     auto transaction = m_pageLoadState.transaction();
 884
 885     m_pageLoadState.setPendingAPIRequestURL(transaction, request.url());
 886
 887     if (!isValid())
 888         reattachToWebProcess();
 889
 890     SandboxExtension::Handle sandboxExtensionHandle;
 891     bool createdExtension = maybeInitializeSandboxExtensionHandle(request.url(), sandboxExtensionHandle);
 892     if (createdExtension)
 893         m_process->willAcquireUniversalFileReadSandboxExtension();
 894     m_process->send(Messages::WebPage::LoadRequest(navigation->navigationID(), request, sandboxExtensionHandle, (uint64_t)shouldOpenExternalURLsPolicy, UserData(process().transformObjectsToHandles(userData).get())), m_pageID);
 895     m_process->responsivenessTimer().start();
 896
 897     return WTF::move(navigation);
 898 }
 899
 900 RefPtr<API::Navigation> WebPageProxy::loadFile(const String& fileURLString, const String& resourceDirectoryURLString, API::Object* userData)
 901 {
 902     if (m_isClosed)
 903         return nullptr;
 904
 905     if (!isValid())
 906         reattachToWebProcess();
 907
 908     URL fileURL = URL(URL(), fileURLString);
 909     if (!fileURL.isLocalFile())
 910         return nullptr;
 911
 912     URL resourceDirectoryURL;
 913     if (resourceDirectoryURLString.isNull())
 914         resourceDirectoryURL = URL(ParsedURLString, ASCIILiteral("file:///"));
 915     else {
 916         resourceDirectoryURL = URL(URL(), resourceDirectoryURLString);
 917         if (!resourceDirectoryURL.isLocalFile())
 918             return nullptr;
 919     }
 920
 921     auto navigation = m_navigationState->createLoadRequestNavigation(ResourceRequest(fileURL));
 922
 923     auto transaction = m_pageLoadState.transaction();
 924
 925     m_pageLoadState.setPendingAPIRequestURL(transaction, fileURLString);
 926
 927     String resourceDirectoryPath = resourceDirectoryURL.fileSystemPath();
 928
 929     SandboxExtension::Handle sandboxExtensionHandle;
 930     SandboxExtension::createHandle(resourceDirectoryPath, SandboxExtension::ReadOnly, sandboxExtensionHandle);
 931     m_process->assumeReadAccessToBaseURL(resourceDirectoryURL);
 932     m_process->send(Messages::WebPage::LoadRequest(navigation->navigationID(), fileURL, sandboxExtensionHandle, (uint64_t)ShouldOpenExternalURLsPolicy::ShouldNotAllow, UserData(process().transformObjectsToHandles(userData).get())), m_pageID);
 933     m_process->responsivenessTimer().start();
 934
 935     return WTF::move(navigation);
 936 }
 937
 938 RefPtr<API::Navigation> WebPageProxy::loadData(API::Data* data, const String& MIMEType, const String& encoding, const String& baseURL, API::Object* userData)
 939 {
 940     if (m_isClosed)
 941         return nullptr;
 942
 943     auto navigation = m_navigationState->createLoadDataNavigation();
 944
 945     auto transaction = m_pageLoadState.transaction();
 946
 947     m_pageLoadState.setPendingAPIRequestURL(transaction, !baseURL.isEmpty() ? baseURL : ASCIILiteral("about:blank"));
 948
 949     if (!isValid())
 950         reattachToWebProcess();
 951
 952     m_process->assumeReadAccessToBaseURL(baseURL);
 953     m_process->send(Messages::WebPage::LoadData(navigation->navigationID(), data->dataReference(), MIMEType, encoding, baseURL, UserData(process().transformObjectsToHandles(userData).get())), m_pageID);
 954     m_process->responsivenessTimer().start();
 955
 956     return WTF::move(navigation);
 957 }
 958
 959 // FIXME: Get rid of loadHTMLString and just use loadData instead.
 960 RefPtr<API::Navigation> WebPageProxy::loadHTMLString(const String& htmlString, const String& baseURL, API::Object* userData)
 961 {
 962     if (m_isClosed)
 963         return nullptr;
 964
 965     auto navigation = m_navigationState->createLoadDataNavigation();
 966
 967     auto transaction = m_pageLoadState.transaction();
 968
 969     m_pageLoadState.setPendingAPIRequestURL(transaction, !baseURL.isEmpty() ? baseURL : ASCIILiteral("about:blank"));
 970
 971     if (!isValid())
 972         reattachToWebProcess();
 973
 974     m_process->assumeReadAccessToBaseURL(baseURL);
 975     m_process->send(Messages::WebPage::LoadHTMLString(navigation->navigationID(), htmlString, baseURL, UserData(process().transformObjectsToHandles(userData).get())), m_pageID);
 976     m_process->responsivenessTimer().start();
 977
 978     return WTF::move(navigation);
 979 }
 980
 981 void WebPageProxy::loadAlternateHTMLString(const String& htmlString, const String& baseURL, const String& unreachableURL, API::Object* userData)
 982 {
 983     if (m_isClosed)
 984         return;
 985
 986     if (!isValid())
 987         reattachToWebProcess();
 988
 989     auto transaction = m_pageLoadState.transaction();
 990
 991     m_pageLoadState.setUnreachableURL(transaction, unreachableURL);
 992
 993     if (m_mainFrame)
 994         m_mainFrame->setUnreachableURL(unreachableURL);
 995
 996     m_process->assumeReadAccessToBaseURL(baseURL);
 997     m_process->assumeReadAccessToBaseURL(unreachableURL);
 998     m_process->send(Messages::WebPage::LoadAlternateHTMLString(htmlString, baseURL, unreachableURL, m_failingProvisionalLoadURL, UserData(process().transformObjectsToHandles(userData).get())), m_pageID);
 999     m_process->responsivenessTimer().start();
1000 }
1001
1002 void WebPageProxy::loadPlainTextString(const String& string, API::Object* userData)
1003 {
1004     if (m_isClosed)
1005         return;
1006
1007     if (!isValid())
1008         reattachToWebProcess();
1009
1010     m_process->send(Messages::WebPage::LoadPlainTextString(string, UserData(process().transformObjectsToHandles(userData).get())), m_pageID);
1011     m_process->responsivenessTimer().start();
1012 }
1013
1014 void WebPageProxy::loadWebArchiveData(API::Data* webArchiveData, API::Object* userData)
1015 {
1016     if (m_isClosed)
1017         return;
1018
1019     if (!isValid())
1020         reattachToWebProcess();
1021
1022     m_process->send(Messages::WebPage::LoadWebArchiveData(webArchiveData->dataReference(), UserData(process().transformObjectsToHandles(userData).get())), m_pageID);
1023     m_process->responsivenessTimer().start();
1024 }
1025
1026 void WebPageProxy::navigateToPDFLinkWithSimulatedClick(const String& url, IntPoint documentPoint, IntPoint screenPoint)
1027 {
1028     if (m_isClosed)
1029         return;
1030
1031     if (WebCore::protocolIsJavaScript(url))
1032         return;
1033
1034     if (!isValid())
1035         reattachToWebProcess();
1036
1037     m_process->send(Messages::WebPage::NavigateToPDFLinkWithSimulatedClick(url, documentPoint, screenPoint), m_pageID);
1038     m_process->responsivenessTimer().start();
1039 }
1040
1041 void WebPageProxy::stopLoading()
1042 {
1043     if (!isValid())
1044         return;
1045
1046     m_process->send(Messages::WebPage::StopLoading(), m_pageID);
1047     m_process->responsivenessTimer().start();
1048 }
1049
1050 RefPtr<API::Navigation> WebPageProxy::reload(bool reloadFromOrigin, bool contentBlockersEnabled)
1051 {
1052     SandboxExtension::Handle sandboxExtensionHandle;
1053
1054     if (m_backForwardList->currentItem()) {
1055         String url = m_backForwardList->currentItem()->url();
1056         auto transaction = m_pageLoadState.transaction();
1057         m_pageLoadState.setPendingAPIRequestURL(transaction, url);
1058
1059         // We may not have an extension yet if back/forward list was reinstated after a WebProcess crash or a browser relaunch
1060         bool createdExtension = maybeInitializeSandboxExtensionHandle(URL(URL(), url), sandboxExtensionHandle);
1061         if (createdExtension)
1062             m_process->willAcquireUniversalFileReadSandboxExtension();
1063     }
1064
1065     if (!isValid())
1066         return reattachToWebProcessForReload();
1067
1068     auto navigation = m_navigationState->createReloadNavigation();
1069
1070     m_process->send(Messages::WebPage::Reload(navigation->navigationID(), reloadFromOrigin, contentBlockersEnabled, sandboxExtensionHandle), m_pageID);
1071     m_process->responsivenessTimer().start();
1072
1073     return WTF::move(navigation);
1074 }
1075
1076 void WebPageProxy::recordNavigationSnapshot()
1077 {
1078     if (WebBackForwardListItem* item = m_backForwardList->currentItem())
1079         recordNavigationSnapshot(*item);
1080 }
1081
1082 void WebPageProxy::recordNavigationSnapshot(WebBackForwardListItem& item)
1083 {
1084     if (!m_shouldRecordNavigationSnapshots || m_suppressNavigationSnapshotting)
1085         return;
1086
1087 #if PLATFORM(COCOA)
1088     ViewSnapshotStore::singleton().recordSnapshot(*this, item);
1089 #else
1090     UNUSED_PARAM(item);
1091 #endif
1092 }
1093
1094 RefPtr<API::Navigation> WebPageProxy::goForward()
1095 {
1096     WebBackForwardListItem* forwardItem = m_backForwardList->forwardItem();
1097     if (!forwardItem)
1098         return nullptr;
1099
1100     auto transaction = m_pageLoadState.transaction();
1101
1102     m_pageLoadState.setPendingAPIRequestURL(transaction, forwardItem->url());
1103
1104     if (!isValid())
1105         return reattachToWebProcessWithItem(forwardItem);
1106
1107     RefPtr<API::Navigation> navigation;
1108     if (!m_backForwardList->currentItem()->itemIsInSameDocument(*forwardItem))
1109         navigation = m_navigationState->createBackForwardNavigation();
1110
1111     m_process->send(Messages::WebPage::GoForward(navigation ? navigation->navigationID() : 0, forwardItem->itemID()), m_pageID);
1112     m_process->responsivenessTimer().start();
1113
1114     return navigation;
1115 }
1116
1117 RefPtr<API::Navigation> WebPageProxy::goBack()
1118 {
1119     WebBackForwardListItem* backItem = m_backForwardList->backItem();
1120     if (!backItem)
1121         return nullptr;
1122
1123     auto transaction = m_pageLoadState.transaction();
1124
1125     m_pageLoadState.setPendingAPIRequestURL(transaction, backItem->url());
1126
1127     if (!isValid())
1128         return reattachToWebProcessWithItem(backItem);
1129
1130     RefPtr<API::Navigation> navigation;
1131     if (!m_backForwardList->currentItem()->itemIsInSameDocument(*backItem))
1132         navigation = m_navigationState->createBackForwardNavigation();
1133
1134     m_process->send(Messages::WebPage::GoBack(navigation ? navigation->navigationID() : 0, backItem->itemID()), m_pageID);
1135     m_process->responsivenessTimer().start();
1136
1137     return navigation;
1138 }
1139
1140 RefPtr<API::Navigation> WebPageProxy::goToBackForwardItem(WebBackForwardListItem* item)
1141 {
1142     if (!isValid())
1143         return reattachToWebProcessWithItem(item);
1144
1145     auto transaction = m_pageLoadState.transaction();
1146
1147     m_pageLoadState.setPendingAPIRequestURL(transaction, item->url());
1148
1149     RefPtr<API::Navigation> navigation;
1150     if (!m_backForwardList->currentItem()->itemIsInSameDocument(*item))
1151         navigation = m_navigationState->createBackForwardNavigation();
1152
1153     m_process->send(Messages::WebPage::GoToBackForwardItem(navigation ? navigation->navigationID() : 0, item->itemID()), m_pageID);
1154     m_process->responsivenessTimer().start();
1155
1156     return navigation;
1157 }
1158
1159 void WebPageProxy::tryRestoreScrollPosition()
1160 {
1161     if (!isValid())
1162         return;
1163
1164     m_process->send(Messages::WebPage::TryRestoreScrollPosition(), m_pageID);
1165 }
1166
1167 void WebPageProxy::didChangeBackForwardList(WebBackForwardListItem* added, Vector<RefPtr<WebBackForwardListItem>> removed)
1168 {
1169     PageClientProtector protector(m_pageClient);
1170
1171     m_loaderClient->didChangeBackForwardList(*this, added, WTF::move(removed));
1172
1173     auto transaction = m_pageLoadState.transaction();
1174
1175     m_pageLoadState.setCanGoBack(transaction, m_backForwardList->backItem());
1176     m_pageLoadState.setCanGoForward(transaction, m_backForwardList->forwardItem());
1177 }
1178
1179 void WebPageProxy::willGoToBackForwardListItem(uint64_t itemID, const UserData& userData)
1180 {
1181     PageClientProtector protector(m_pageClient);
1182
1183     if (WebBackForwardListItem* item = m_process->webBackForwardItem(itemID))
1184         m_loaderClient->willGoToBackForwardListItem(*this, item, m_process->transformHandlesToObjects(userData.object()).get());
1185 }
1186
1187 bool WebPageProxy::shouldKeepCurrentBackForwardListItemInList(WebBackForwardListItem* item)
1188 {
1189     PageClientProtector protector(m_pageClient);
1190
1191     return m_loaderClient->shouldKeepCurrentBackForwardListItemInList(*this, item);
1192 }
1193
1194 bool WebPageProxy::canShowMIMEType(const String& mimeType)
1195 {
1196     if (MIMETypeRegistry::canShowMIMEType(mimeType))
1197         return true;
1198
1199 #if ENABLE(NETSCAPE_PLUGIN_API)
1200     String newMimeType = mimeType;
1201     PluginModuleInfo plugin = m_process->processPool().pluginInfoStore().findPlugin(newMimeType, URL());
1202     if (!plugin.path.isNull() && m_preferences->pluginsEnabled())
1203         return true;
1204 #endif // ENABLE(NETSCAPE_PLUGIN_API)
1205
1206 #if PLATFORM(COCOA)
1207     // On Mac, we can show PDFs.
1208     if (MIMETypeRegistry::isPDFOrPostScriptMIMEType(mimeType) && !WebProcessPool::omitPDFSupport())
1209         return true;
1210 #endif // PLATFORM(COCOA)
1211
1212     return false;
1213 }
1214
1215 #if ENABLE(REMOTE_INSPECTOR)
1216 void WebPageProxy::setAllowsRemoteInspection(bool allow)
1217 {
1218     if (m_allowsRemoteInspection == allow)
1219         return;
1220
1221     m_allowsRemoteInspection = allow;
1222
1223     if (isValid())
1224         m_process->send(Messages::WebPage::SetAllowsRemoteInspection(allow), m_pageID);
1225 }
1226
1227 void WebPageProxy::setRemoteInspectionNameOverride(const String& name)
1228 {
1229     if (m_remoteInspectionNameOverride == name)
1230         return;
1231
1232     m_remoteInspectionNameOverride = name;
1233
1234     if (isValid())
1235         m_process->send(Messages::WebPage::SetRemoteInspectionNameOverride(m_remoteInspectionNameOverride), m_pageID);
1236 }
1237
1238 #endif
1239
1240 void WebPageProxy::setDrawsBackground(bool drawsBackground)
1241 {
1242     if (m_drawsBackground == drawsBackground)
1243         return;
1244
1245     m_drawsBackground = drawsBackground;
1246
1247     if (isValid())
1248         m_process->send(Messages::WebPage::SetDrawsBackground(drawsBackground), m_pageID);
1249 }
1250
1251 void WebPageProxy::setTopContentInset(float contentInset)
1252 {
1253     if (m_topContentInset == contentInset)
1254         return;
1255
1256     m_topContentInset = contentInset;
1257
1258     if (isValid())
1259         m_process->send(Messages::WebPage::SetTopContentInset(contentInset), m_pageID);
1260 }
1261
1262 void WebPageProxy::setUnderlayColor(const Color& color)
1263 {
1264     if (m_underlayColor == color)
1265         return;
1266
1267     m_underlayColor = color;
1268
1269     if (isValid())
1270         m_process->send(Messages::WebPage::SetUnderlayColor(color), m_pageID);
1271 }
1272
1273 void WebPageProxy::viewWillStartLiveResize()
1274 {
1275     if (!isValid())
1276         return;
1277 #if ENABLE(INPUT_TYPE_COLOR_POPOVER) && ENABLE(INPUT_TYPE_COLOR)
1278     if (m_colorPicker)
1279         endColorPicker();
1280 #endif
1281     m_process->send(Messages::WebPage::ViewWillStartLiveResize(), m_pageID);
1282 }
1283
1284 void WebPageProxy::viewWillEndLiveResize()
1285 {
1286     if (!isValid())
1287         return;
1288     m_process->send(Messages::WebPage::ViewWillEndLiveResize(), m_pageID);
1289 }
1290
1291 void WebPageProxy::setViewNeedsDisplay(const IntRect& rect)
1292 {
1293     m_pageClient.setViewNeedsDisplay(rect);
1294 }
1295
1296 void WebPageProxy::displayView()
1297 {
1298     m_pageClient.displayView();
1299 }
1300
1301 bool WebPageProxy::canScrollView()
1302 {
1303     return m_pageClient.canScrollView();
1304 }
1305
1306 void WebPageProxy::scrollView(const IntRect& scrollRect, const IntSize& scrollOffset)
1307 {
1308     m_pageClient.scrollView(scrollRect, scrollOffset);
1309 }
1310
1311 void WebPageProxy::requestScroll(const FloatPoint& scrollPosition, const IntPoint& scrollOrigin, bool isProgrammaticScroll)
1312 {
1313     m_pageClient.requestScroll(scrollPosition, scrollOrigin, isProgrammaticScroll);
1314 }
1315
1316 void WebPageProxy::setSuppressVisibilityUpdates(bool flag)
1317 {
1318     if (m_suppressVisibilityUpdates == flag)
1319         return;
1320     m_suppressVisibilityUpdates = flag;
1321
1322     if (!m_suppressVisibilityUpdates) {
1323 #if PLATFORM(COCOA)
1324         m_viewStateChangeDispatcher->schedule();
1325 #else
1326         dispatchViewStateChange();
1327 #endif
1328     }
1329 }
1330
1331 void WebPageProxy::updateViewState(ViewState::Flags flagsToUpdate)
1332 {
1333     m_viewState &= ~flagsToUpdate;
1334     if (flagsToUpdate & ViewState::IsFocused && m_pageClient.isViewFocused())
1335         m_viewState |= ViewState::IsFocused;
1336     if (flagsToUpdate & ViewState::WindowIsActive && m_pageClient.isViewWindowActive())
1337         m_viewState |= ViewState::WindowIsActive;
1338     if (flagsToUpdate & ViewState::IsVisible && m_pageClient.isViewVisible())
1339         m_viewState |= ViewState::IsVisible;
1340     if (flagsToUpdate & ViewState::IsVisibleOrOccluded && m_pageClient.isViewVisibleOrOccluded())
1341         m_viewState |= ViewState::IsVisibleOrOccluded;
1342     if (flagsToUpdate & ViewState::IsInWindow && m_pageClient.isViewInWindow())
1343         m_viewState |= ViewState::IsInWindow;
1344     if (flagsToUpdate & ViewState::IsVisuallyIdle && m_pageClient.isVisuallyIdle())
1345         m_viewState |= ViewState::IsVisuallyIdle;
1346 }
1347
1348 void WebPageProxy::viewStateDidChange(ViewState::Flags mayHaveChanged, bool wantsSynchronousReply, ViewStateChangeDispatchMode dispatchMode)
1349 {
1350     m_potentiallyChangedViewStateFlags |= mayHaveChanged;
1351     m_viewStateChangeWantsSynchronousReply = m_viewStateChangeWantsSynchronousReply || wantsSynchronousReply;
1352
1353     if (m_suppressVisibilityUpdates && dispatchMode != ViewStateChangeDispatchMode::Immediate)
1354         return;
1355
1356 #if PLATFORM(COCOA)
1357     bool isNewlyInWindow = !isInWindow() && (mayHaveChanged & ViewState::IsInWindow) && m_pageClient.isViewInWindow();
1358     if (dispatchMode == ViewStateChangeDispatchMode::Immediate || isNewlyInWindow) {
1359         dispatchViewStateChange();
1360         return;
1361     }
1362     m_viewStateChangeDispatcher->schedule();
1363 #else
1364     UNUSED_PARAM(dispatchMode);
1365     dispatchViewStateChange();
1366 #endif
1367 }
1368
1369 void WebPageProxy::viewDidLeaveWindow()
1370 {
1371 #if ENABLE(INPUT_TYPE_COLOR_POPOVER) && ENABLE(INPUT_TYPE_COLOR)
1372     // When leaving the current page, close the popover color well.
1373     if (m_colorPicker)
1374         endColorPicker();
1375 #endif
1376 #if PLATFORM(IOS)
1377     // When leaving the current page, close the video fullscreen.
1378     if (m_videoFullscreenManager)
1379         m_videoFullscreenManager->requestHideAndExitFullscreen();
1380 #endif
1381 }
1382
1383 void WebPageProxy::viewDidEnterWindow()
1384 {
1385     LayerHostingMode layerHostingMode = m_pageClient.viewLayerHostingMode();
1386     if (m_layerHostingMode != layerHostingMode) {
1387         m_layerHostingMode = layerHostingMode;
1388         m_process->send(Messages::WebPage::SetLayerHostingMode(static_cast<unsigned>(layerHostingMode)), m_pageID);
1389     }
1390 }
1391
1392 void WebPageProxy::dispatchViewStateChange()
1393 {
1394 #if PLATFORM(COCOA)
1395     m_viewStateChangeDispatcher->invalidate();
1396 #endif
1397
1398     if (!isValid())
1399         return;
1400
1401     // If the visibility state may have changed, then so may the visually idle & occluded agnostic state.
1402     if (m_potentiallyChangedViewStateFlags & ViewState::IsVisible)
1403         m_potentiallyChangedViewStateFlags |= ViewState::IsVisibleOrOccluded | ViewState::IsVisuallyIdle;
1404
1405     // Record the prior view state, update the flags that may have changed,
1406     // and check which flags have actually changed.
1407     ViewState::Flags previousViewState = m_viewState;
1408     updateViewState(m_potentiallyChangedViewStateFlags);
1409     ViewState::Flags changed = m_viewState ^ previousViewState;
1410
1411     bool isNowInWindow = (changed & ViewState::IsInWindow) && isInWindow();
1412     // We always want to wait for the Web process to reply if we've been in-window before and are coming back in-window.
1413     if (m_viewWasEverInWindow && isNowInWindow && m_drawingArea->hasVisibleContent())
1414         m_viewStateChangeWantsSynchronousReply = true;
1415
1416     // Don't wait synchronously if the view state is not visible. (This matters in particular on iOS, where a hidden page may be suspended.)
1417     if (!(m_viewState & ViewState::IsVisible))
1418         m_viewStateChangeWantsSynchronousReply = false;
1419
1420     if (changed || m_viewStateChangeWantsSynchronousReply || !m_nextViewStateChangeCallbacks.isEmpty())
1421         m_process->send(Messages::WebPage::SetViewState(m_viewState, m_viewStateChangeWantsSynchronousReply, m_nextViewStateChangeCallbacks), m_pageID);
1422
1423     m_nextViewStateChangeCallbacks.clear();
1424
1425     // This must happen after the SetViewState message is sent, to ensure the page visibility event can fire.
1426     updateActivityToken();
1427
1428     // If we've started the responsiveness timer as part of telling the web process to update the backing store
1429     // state, it might not send back a reply (since it won't paint anything if the web page is hidden) so we
1430     // stop the unresponsiveness timer here.
1431     if ((changed & ViewState::IsVisible) && !isViewVisible())
1432         m_process->responsivenessTimer().stop();
1433
1434     if (changed & ViewState::IsInWindow) {
1435         if (isInWindow())
1436             viewDidEnterWindow();
1437         else
1438             viewDidLeaveWindow();
1439     }
1440
1441     updateBackingStoreDiscardableState();
1442
1443     if (m_viewStateChangeWantsSynchronousReply)
1444         waitForDidUpdateViewState();
1445
1446     m_potentiallyChangedViewStateFlags = ViewState::NoFlags;
1447     m_viewStateChangeWantsSynchronousReply = false;
1448     m_viewWasEverInWindow |= isNowInWindow;
1449 }
1450
1451 void WebPageProxy::updateActivityToken()
1452 {
1453     if (m_viewState & ViewState::IsVisuallyIdle)
1454         m_pageIsUserObservableCount = nullptr;
1455     else if (!m_pageIsUserObservableCount)
1456         m_pageIsUserObservableCount = m_process->processPool().userObservablePageCount();
1457
1458 #if PLATFORM(IOS)
1459     if (!isViewVisible() && !m_alwaysRunsAtForegroundPriority)
1460         m_activityToken = nullptr;
1461     else if (!m_activityToken)
1462         m_activityToken = m_process->throttler().foregroundActivityToken();
1463 #endif
1464 }
1465
1466 void WebPageProxy::updateProccessSuppressionState()
1467 {
1468     if (m_preferences->pageVisibilityBasedProcessSuppressionEnabled())
1469         m_preventProcessSuppressionCount = nullptr;
1470     else if (!m_preventProcessSuppressionCount)
1471         m_preventProcessSuppressionCount = m_process->processPool().processSuppressionDisabledForPageCount();
1472 }
1473
1474 void WebPageProxy::layerHostingModeDidChange()
1475 {
1476     if (!isValid())
1477         return;
1478
1479     LayerHostingMode layerHostingMode = m_pageClient.viewLayerHostingMode();
1480     if (m_layerHostingMode == layerHostingMode)
1481         return;
1482
1483     m_layerHostingMode = layerHostingMode;
1484     m_process->send(Messages::WebPage::SetLayerHostingMode(static_cast<unsigned>(layerHostingMode)), m_pageID);
1485 }
1486
1487 void WebPageProxy::waitForDidUpdateViewState()
1488 {
1489     if (!isValid())
1490         return;
1491
1492     if (m_process->state() != WebProcessProxy::State::Running)
1493         return;
1494
1495     // If we have previously timed out with no response from the WebProcess, don't block the UIProcess again until it starts responding.
1496     if (m_waitingForDidUpdateViewState)
1497         return;
1498
1499 #if PLATFORM(IOS)
1500     // Hail Mary check. Should not be possible (dispatchViewStateChange should force async if not visible,
1501     // and if visible we should be holding an assertion) - but we should never block on a suspended process.
1502     if (!m_activityToken) {
1503         ASSERT_NOT_REACHED();
1504         return;
1505     }
1506 #endif
1507
1508     m_waitingForDidUpdateViewState = true;
1509
1510     m_drawingArea->waitForDidUpdateViewState();
1511 }
1512
1513 IntSize WebPageProxy::viewSize() const
1514 {
1515     return m_pageClient.viewSize();
1516 }
1517
1518 void WebPageProxy::setInitialFocus(bool forward, bool isKeyboardEventValid, const WebKeyboardEvent& keyboardEvent, std::function<void (CallbackBase::Error)> callbackFunction)
1519 {
1520     if (!isValid()) {
1521         callbackFunction(CallbackBase::Error::OwnerWasInvalidated);
1522         return;
1523     }
1524
1525     uint64_t callbackID = m_callbacks.put(WTF::move(callbackFunction), m_process->throttler().backgroundActivityToken());
1526     m_process->send(Messages::WebPage::SetInitialFocus(forward, isKeyboardEventValid, keyboardEvent, callbackID), m_pageID);
1527 }
1528
1529 void WebPageProxy::clearSelection()
1530 {
1531     if (!isValid())
1532         return;
1533     m_process->send(Messages::WebPage::ClearSelection(), m_pageID);
1534 }
1535
1536 void WebPageProxy::restoreSelectionInFocusedEditableElement()
1537 {
1538     if (!isValid())
1539         return;
1540     m_process->send(Messages::WebPage::RestoreSelectionInFocusedEditableElement(), m_pageID);
1541 }
1542
1543 void WebPageProxy::validateCommand(const String& commandName, std::function<void (const String&, bool, int32_t, CallbackBase::Error)> callbackFunction)
1544 {
1545     if (!isValid()) {
1546         callbackFunction(String(), false, 0, CallbackBase::Error::Unknown);
1547         return;
1548     }
1549
1550     uint64_t callbackID = m_callbacks.put(WTF::move(callbackFunction), m_process->throttler().backgroundActivityToken());
1551     m_process->send(Messages::WebPage::ValidateCommand(commandName, callbackID), m_pageID);
1552 }
1553
1554 void WebPageProxy::setMaintainsInactiveSelection(bool newValue)
1555 {
1556     m_maintainsInactiveSelection = newValue;
1557 }
1558
1559 void WebPageProxy::executeEditCommand(const String& commandName, const String& argument)
1560 {
1561     static NeverDestroyed<String> ignoreSpellingCommandName(ASCIILiteral("ignoreSpelling"));
1562
1563     if (!isValid())
1564         return;
1565
1566     if (commandName == ignoreSpellingCommandName)
1567         ++m_pendingLearnOrIgnoreWordMessageCount;
1568
1569     m_process->send(Messages::WebPage::ExecuteEditCommand(commandName, argument), m_pageID);
1570 }
1571
1572 void WebPageProxy::setEditable(bool editable)
1573 {
1574     if (editable == m_isEditable)
1575         return;
1576     if (!isValid())
1577         return;
1578
1579     m_isEditable = editable;
1580     m_process->send(Messages::WebPage::SetEditable(editable), m_pageID);
1581 }
1582
1583 #if !PLATFORM(IOS)
1584 void WebPageProxy::didCommitLayerTree(const RemoteLayerTreeTransaction&)
1585 {
1586 }
1587 #endif
1588
1589 #if ENABLE(DRAG_SUPPORT)
1590 void WebPageProxy::dragEntered(DragData& dragData, const String& dragStorageName)
1591 {
1592     SandboxExtension::Handle sandboxExtensionHandle;
1593     SandboxExtension::HandleArray sandboxExtensionHandleEmptyArray;
1594     performDragControllerAction(DragControllerActionEntered, dragData, dragStorageName, sandboxExtensionHandle, sandboxExtensionHandleEmptyArray);
1595 }
1596
1597 void WebPageProxy::dragUpdated(DragData& dragData, const String& dragStorageName)
1598 {
1599     SandboxExtension::Handle sandboxExtensionHandle;
1600     SandboxExtension::HandleArray sandboxExtensionHandleEmptyArray;
1601     performDragControllerAction(DragControllerActionUpdated, dragData, dragStorageName, sandboxExtensionHandle, sandboxExtensionHandleEmptyArray);
1602 }
1603
1604 void WebPageProxy::dragExited(DragData& dragData, const String& dragStorageName)
1605 {
1606     SandboxExtension::Handle sandboxExtensionHandle;
1607     SandboxExtension::HandleArray sandboxExtensionHandleEmptyArray;
1608     performDragControllerAction(DragControllerActionExited, dragData, dragStorageName, sandboxExtensionHandle, sandboxExtensionHandleEmptyArray);
1609 }
1610
1611 void WebPageProxy::performDragOperation(DragData& dragData, const String& dragStorageName, const SandboxExtension::Handle& sandboxExtensionHandle, const SandboxExtension::HandleArray& sandboxExtensionsForUpload)
1612 {
1613     performDragControllerAction(DragControllerActionPerformDragOperation, dragData, dragStorageName, sandboxExtensionHandle, sandboxExtensionsForUpload);
1614 }
1615
1616 void WebPageProxy::performDragControllerAction(DragControllerAction action, DragData& dragData, const String& dragStorageName, const SandboxExtension::Handle& sandboxExtensionHandle, const SandboxExtension::HandleArray& sandboxExtensionsForUpload)
1617 {
1618     if (!isValid())
1619         return;
1620 #if PLATFORM(GTK)
1621     UNUSED_PARAM(dragStorageName);
1622     UNUSED_PARAM(sandboxExtensionHandle);
1623     UNUSED_PARAM(sandboxExtensionsForUpload);
1624
1625     String url = dragData.asURL();
1626     if (!url.isEmpty())
1627         m_process->assumeReadAccessToBaseURL(url);
1628     m_process->send(Messages::WebPage::PerformDragControllerAction(action, dragData), m_pageID);
1629 #else
1630     m_process->send(Messages::WebPage::PerformDragControllerAction(action, dragData.clientPosition(), dragData.globalPosition(), dragData.draggingSourceOperationMask(), dragStorageName, dragData.flags(), sandboxExtensionHandle, sandboxExtensionsForUpload), m_pageID);
1631 #endif
1632 }
1633
1634 void WebPageProxy::didPerformDragControllerAction(uint64_t dragOperation, bool mouseIsOverFileInput, unsigned numberOfItemsToBeAccepted)
1635 {
1636     MESSAGE_CHECK(dragOperation <= DragOperationDelete);
1637
1638     m_currentDragOperation = static_cast<DragOperation>(dragOperation);
1639     m_currentDragIsOverFileInput = mouseIsOverFileInput;
1640     m_currentDragNumberOfFilesToBeAccepted = numberOfItemsToBeAccepted;
1641 }
1642
1643 #if PLATFORM(GTK)
1644 void WebPageProxy::startDrag(const DragData& dragData, const ShareableBitmap::Handle& dragImageHandle)
1645 {
1646     RefPtr<ShareableBitmap> dragImage = 0;
1647     if (!dragImageHandle.isNull()) {
1648         dragImage = ShareableBitmap::create(dragImageHandle);
1649         if (!dragImage)
1650             return;
1651     }
1652
1653     m_pageClient.startDrag(dragData, dragImage.release());
1654 }
1655 #endif
1656
1657 void WebPageProxy::dragEnded(const IntPoint& clientPosition, const IntPoint& globalPosition, uint64_t operation)
1658 {
1659     if (!isValid())
1660         return;
1661     m_process->send(Messages::WebPage::DragEnded(clientPosition, globalPosition, operation), m_pageID);
1662 }
1663 #endif // ENABLE(DRAG_SUPPORT)
1664
1665 void WebPageProxy::handleMouseEvent(const NativeWebMouseEvent& event)
1666 {
1667     if (!isValid())
1668         return;
1669
1670     // NOTE: This does not start the responsiveness timer because mouse move should not indicate interaction.
1671     if (event.type() != WebEvent::MouseMove)
1672         m_process->responsivenessTimer().start();
1673     else {
1674         if (m_processingMouseMoveEvent) {
1675             m_nextMouseMoveEvent = std::make_unique<NativeWebMouseEvent>(event);
1676             return;
1677         }
1678
1679         m_processingMouseMoveEvent = true;
1680     }
1681
1682     // <https://bugs.webkit.org/show_bug.cgi?id=57904> We need to keep track of the mouse down event in the case where we
1683     // display a popup menu for select elements. When the user changes the selected item,
1684     // we fake a mouse up event by using this stored down event. This event gets cleared
1685     // when the mouse up message is received from WebProcess.
1686     if (event.type() == WebEvent::MouseDown)
1687         m_currentlyProcessedMouseDownEvent = std::make_unique<NativeWebMouseEvent>(event);
1688
1689     m_process->send(Messages::WebPage::MouseEvent(event), m_pageID);
1690 }
1691
1692 #if MERGE_WHEEL_EVENTS
1693 static bool canCoalesce(const WebWheelEvent& a, const WebWheelEvent& b)
1694 {
1695     if (a.position() != b.position())
1696         return false;
1697     if (a.globalPosition() != b.globalPosition())
1698         return false;
1699     if (a.modifiers() != b.modifiers())
1700         return false;
1701     if (a.granularity() != b.granularity())
1702         return false;
1703 #if PLATFORM(COCOA)
1704     if (a.phase() != b.phase())
1705         return false;
1706     if (a.momentumPhase() != b.momentumPhase())
1707         return false;
1708     if (a.hasPreciseScrollingDeltas() != b.hasPreciseScrollingDeltas())
1709         return false;
1710 #endif
1711
1712     return true;
1713 }
1714
1715 static WebWheelEvent coalesce(const WebWheelEvent& a, const WebWheelEvent& b)
1716 {
1717     ASSERT(canCoalesce(a, b));
1718
1719     FloatSize mergedDelta = a.delta() + b.delta();
1720     FloatSize mergedWheelTicks = a.wheelTicks() + b.wheelTicks();
1721
1722 #if PLATFORM(COCOA)
1723     FloatSize mergedUnacceleratedScrollingDelta = a.unacceleratedScrollingDelta() + b.unacceleratedScrollingDelta();
1724
1725     return WebWheelEvent(WebEvent::Wheel, b.position(), b.globalPosition(), mergedDelta, mergedWheelTicks, b.granularity(), b.directionInvertedFromDevice(), b.phase(), b.momentumPhase(), b.hasPreciseScrollingDeltas(), b.scrollCount(), mergedUnacceleratedScrollingDelta, b.modifiers(), b.timestamp());
1726 #else
1727     return WebWheelEvent(WebEvent::Wheel, b.position(), b.globalPosition(), mergedDelta, mergedWheelTicks, b.granularity(), b.modifiers(), b.timestamp());
1728 #endif
1729 }
1730 #endif // MERGE_WHEEL_EVENTS
1731
1732 static WebWheelEvent coalescedWheelEvent(Deque<NativeWebWheelEvent>& queue, Vector<NativeWebWheelEvent>& coalescedEvents)
1733 {
1734     ASSERT(!queue.isEmpty());
1735     ASSERT(coalescedEvents.isEmpty());
1736
1737 #if MERGE_WHEEL_EVENTS
1738     NativeWebWheelEvent firstEvent = queue.takeFirst();
1739     coalescedEvents.append(firstEvent);
1740
1741     WebWheelEvent event = firstEvent;
1742     while (!queue.isEmpty() && canCoalesce(event, queue.first())) {
1743         NativeWebWheelEvent firstEvent = queue.takeFirst();
1744         coalescedEvents.append(firstEvent);
1745         event = coalesce(event, firstEvent);
1746     }
1747
1748     return event;
1749 #else
1750     while (!queue.isEmpty())
1751         coalescedEvents.append(queue.takeFirst());
1752     return coalescedEvents.last();
1753 #endif
1754 }
1755
1756 void WebPageProxy::handleWheelEvent(const NativeWebWheelEvent& event)
1757 {
1758 #if ENABLE(ASYNC_SCROLLING)
1759     if (m_scrollingCoordinatorProxy && m_scrollingCoordinatorProxy->handleWheelEvent(platform(event)))
1760         return;
1761 #endif
1762
1763     if (!isValid())
1764         return;
1765
1766     if (!m_currentlyProcessedWheelEvents.isEmpty()) {
1767         m_wheelEventQueue.append(event);
1768         if (m_wheelEventQueue.size() < wheelEventQueueSizeThreshold)
1769             return;
1770         // The queue has too many wheel events, so push a new event.
1771     }
1772
1773     if (!m_wheelEventQueue.isEmpty()) {
1774         processNextQueuedWheelEvent();
1775         return;
1776     }
1777
1778     auto coalescedWheelEvent = std::make_unique<Vector<NativeWebWheelEvent>>();
1779     coalescedWheelEvent->append(event);
1780     m_currentlyProcessedWheelEvents.append(WTF::move(coalescedWheelEvent));
1781     sendWheelEvent(event);
1782 }
1783
1784 void WebPageProxy::processNextQueuedWheelEvent()
1785 {
1786     auto nextCoalescedEvent = std::make_unique<Vector<NativeWebWheelEvent>>();
1787     WebWheelEvent nextWheelEvent = coalescedWheelEvent(m_wheelEventQueue, *nextCoalescedEvent.get());
1788     m_currentlyProcessedWheelEvents.append(WTF::move(nextCoalescedEvent));
1789     sendWheelEvent(nextWheelEvent);
1790 }
1791
1792 void WebPageProxy::sendWheelEvent(const WebWheelEvent& event)
1793 {
1794     m_process->send(
1795         Messages::EventDispatcher::WheelEvent(
1796             m_pageID,
1797             event,
1798             shouldUseImplicitRubberBandControl() ? !m_backForwardList->backItem() : rubberBandsAtLeft(),
1799             shouldUseImplicitRubberBandControl() ? !m_backForwardList->forwardItem() : rubberBandsAtRight(),
1800             rubberBandsAtTop(),
1801             rubberBandsAtBottom()
1802         ), 0);
1803
1804     m_process->sendMainThreadPing();
1805 }
1806
1807 void WebPageProxy::handleKeyboardEvent(const NativeWebKeyboardEvent& event)
1808 {
1809     if (!isValid())
1810         return;
1811
1812     LOG(KeyHandling, "WebPageProxy::handleKeyboardEvent: %s", webKeyboardEventTypeString(event.type()));
1813
1814     m_keyEventQueue.append(event);
1815
1816     m_process->responsivenessTimer().start();
1817     if (m_keyEventQueue.size() == 1) // Otherwise, sent from DidReceiveEvent message handler.
1818         m_process->send(Messages::WebPage::KeyEvent(event), m_pageID);
1819 }
1820
1821 WebPreferencesStore WebPageProxy::preferencesStore() const
1822 {
1823     if (m_configurationPreferenceValues.isEmpty())
1824         return m_preferences->store();
1825
1826     WebPreferencesStore store = m_preferences->store();
1827     for (const auto& preference : m_configurationPreferenceValues)
1828         store.m_values.set(preference.key, preference.value);
1829
1830     return store;
1831 }
1832
1833 #if ENABLE(NETSCAPE_PLUGIN_API)
1834 void WebPageProxy::findPlugin(const String& mimeType, uint32_t processType, const String& urlString, const String& frameURLString, const String& pageURLString, bool allowOnlyApplicationPlugins, uint64_t& pluginProcessToken, String& newMimeType, uint32_t& pluginLoadPolicy, String& unavailabilityDescription)
1835 {
1836     PageClientProtector protector(m_pageClient);
1837
1838     MESSAGE_CHECK_URL(urlString);
1839
1840     newMimeType = mimeType.lower();
1841     pluginLoadPolicy = PluginModuleLoadNormally;
1842
1843     PluginData::AllowedPluginTypes allowedPluginTypes = allowOnlyApplicationPlugins ? PluginData::OnlyApplicationPlugins : PluginData::AllPlugins;
1844     PluginModuleInfo plugin = m_process->processPool().pluginInfoStore().findPlugin(newMimeType, URL(URL(), urlString), allowedPluginTypes);
1845     if (!plugin.path) {
1846         pluginProcessToken = 0;
1847         return;
1848     }
1849
1850     pluginLoadPolicy = PluginInfoStore::defaultLoadPolicyForPlugin(plugin);
1851
1852 #if PLATFORM(COCOA)
1853     RefPtr<API::Dictionary> pluginInformation = createPluginInformationDictionary(plugin, frameURLString, String(), pageURLString, String(), String());
1854     if (m_navigationClient)
1855         pluginLoadPolicy = m_navigationClient->decidePolicyForPluginLoad(*this, static_cast<PluginModuleLoadPolicy>(pluginLoadPolicy), pluginInformation.get(), unavailabilityDescription);
1856     else
1857         pluginLoadPolicy = m_loaderClient->pluginLoadPolicy(*this, static_cast<PluginModuleLoadPolicy>(pluginLoadPolicy), pluginInformation.get(), unavailabilityDescription);
1858 #else
1859     UNUSED_PARAM(frameURLString);
1860     UNUSED_PARAM(pageURLString);
1861     UNUSED_PARAM(unavailabilityDescription);
1862 #endif
1863
1864     PluginProcessSandboxPolicy pluginProcessSandboxPolicy = PluginProcessSandboxPolicyNormal;
1865     switch (pluginLoadPolicy) {
1866     case PluginModuleLoadNormally:
1867         pluginProcessSandboxPolicy = PluginProcessSandboxPolicyNormal;
1868         break;
1869     case PluginModuleLoadUnsandboxed:
1870         pluginProcessSandboxPolicy = PluginProcessSandboxPolicyUnsandboxed;
1871         break;
1872
1873     case PluginModuleBlockedForSecurity:
1874     case PluginModuleBlockedForCompatibility:
1875         pluginProcessToken = 0;
1876         return;
1877     }
1878
1879     pluginProcessToken = PluginProcessManager::singleton().pluginProcessToken(plugin, static_cast<PluginProcessType>(processType), pluginProcessSandboxPolicy);
1880 }
1881
1882 #endif // ENABLE(NETSCAPE_PLUGIN_API)
1883
1884 #if ENABLE(TOUCH_EVENTS)
1885
1886 bool WebPageProxy::shouldStartTrackingTouchEvents(const WebTouchEvent& touchStartEvent) const
1887 {
1888 #if ENABLE(ASYNC_SCROLLING)
1889     for (auto& touchPoint : touchStartEvent.touchPoints()) {
1890         if (m_scrollingCoordinatorProxy->isPointInNonFastScrollableRegion(touchPoint.location()))
1891             return true;
1892     }
1893
1894     return false;
1895 #else
1896     UNUSED_PARAM(touchStartEvent);
1897 #endif // ENABLE(ASYNC_SCROLLING)
1898     return true;
1899 }
1900
1901 #endif
1902
1903 #if ENABLE(MAC_GESTURE_EVENTS)
1904 void WebPageProxy::handleGestureEvent(const NativeWebGestureEvent& event)
1905 {
1906     if (!isValid())
1907         return;
1908
1909     m_gestureEventQueue.append(event);
1910     // FIXME: Consider doing some coalescing here.
1911     m_process->responsivenessTimer().start();
1912
1913     m_process->send(Messages::EventDispatcher::GestureEvent(m_pageID, event), 0);
1914 }
1915 #endif
1916
1917 #if ENABLE(IOS_TOUCH_EVENTS)
1918 void WebPageProxy::handleTouchEventSynchronously(const NativeWebTouchEvent& event)
1919 {
1920     if (!isValid())
1921         return;
1922
1923     if (event.type() == WebEvent::TouchStart) {
1924         m_isTrackingTouchEvents = shouldStartTrackingTouchEvents(event);
1925         m_layerTreeTransactionIdAtLastTouchStart = downcast<RemoteLayerTreeDrawingAreaProxy>(*drawingArea()).lastCommittedLayerTreeTransactionID();
1926     }
1927
1928     if (!m_isTrackingTouchEvents)
1929         return;
1930
1931     m_process->responsivenessTimer().start();
1932     bool handled = false;
1933     m_process->sendSync(Messages::WebPage::TouchEventSync(event), Messages::WebPage::TouchEventSync::Reply(handled), m_pageID);
1934     didReceiveEvent(event.type(), handled);
1935     m_pageClient.doneWithTouchEvent(event, handled);
1936     m_process->responsivenessTimer().stop();
1937
1938     if (event.allTouchPointsAreReleased())
1939         m_isTrackingTouchEvents = false;
1940 }
1941
1942 void WebPageProxy::handleTouchEventAsynchronously(const NativeWebTouchEvent& event)
1943 {
1944     if (!isValid())
1945         return;
1946
1947     if (!m_isTrackingTouchEvents)
1948         return;
1949
1950     m_process->send(Messages::EventDispatcher::TouchEvent(m_pageID, event), 0);
1951
1952     if (event.allTouchPointsAreReleased())
1953         m_isTrackingTouchEvents = false;
1954 }
1955
1956 #elif ENABLE(TOUCH_EVENTS)
1957 void WebPageProxy::handleTouchEvent(const NativeWebTouchEvent& event)
1958 {
1959     if (!isValid())
1960         return;
1961
1962     if (event.type() == WebEvent::TouchStart)
1963         m_isTrackingTouchEvents = shouldStartTrackingTouchEvents(event);
1964
1965     if (!m_isTrackingTouchEvents)
1966         return;
1967
1968     // If the page is suspended, which should be the case during panning, pinching
1969     // and animation on the page itself (kinetic scrolling, tap to zoom) etc, then
1970     // we do not send any of the events to the page even if is has listeners.
1971     if (!m_isPageSuspended) {
1972         m_touchEventQueue.append(event);
1973         m_process->responsivenessTimer().start();
1974         m_process->send(Messages::WebPage::TouchEvent(event), m_pageID);
1975     } else {
1976         if (m_touchEventQueue.isEmpty()) {
1977             bool isEventHandled = false;
1978             m_pageClient.doneWithTouchEvent(event, isEventHandled);
1979         } else {
1980             // We attach the incoming events to the newest queued event so that all
1981             // the events are delivered in the correct order when the event is dequed.
1982             QueuedTouchEvents& lastEvent = m_touchEventQueue.last();
1983             lastEvent.deferredTouchEvents.append(event);
1984         }
1985     }
1986
1987     if (event.allTouchPointsAreReleased())
1988         m_isTrackingTouchEvents = false;
1989 }
1990 #endif // ENABLE(TOUCH_EVENTS)
1991
1992 void WebPageProxy::scrollBy(ScrollDirection direction, ScrollGranularity granularity)
1993 {
1994     if (!isValid())
1995         return;
1996
1997     m_process->send(Messages::WebPage::ScrollBy(direction, granularity), m_pageID);
1998 }
1999
2000 void WebPageProxy::centerSelectionInVisibleArea()
2001 {
2002     if (!isValid())
2003         return;
2004
2005     m_process->send(Messages::WebPage::CenterSelectionInVisibleArea(), m_pageID);
2006 }
2007
2008 void WebPageProxy::receivedPolicyDecision(PolicyAction action, WebFrameProxy* frame, uint64_t listenerID, API::Navigation* navigation)
2009 {
2010     if (!isValid())
2011         return;
2012
2013     auto transaction = m_pageLoadState.transaction();
2014
2015     if (action == PolicyIgnore)
2016         m_pageLoadState.clearPendingAPIRequestURL(transaction);
2017
2018     uint64_t downloadID = 0;
2019     if (action == PolicyDownload) {
2020         // Create a download proxy.
2021         // FIXME: We should ensure that the downloadRequest is never empty.
2022         const ResourceRequest& downloadRequest = m_decidePolicyForResponseRequest ? *m_decidePolicyForResponseRequest : ResourceRequest();
2023         DownloadProxy* download = m_process->processPool().createDownloadProxy(downloadRequest);
2024         downloadID = download->downloadID();
2025         handleDownloadRequest(download);
2026     }
2027
2028     // If we received a policy decision while in decidePolicyForResponse the decision will
2029     // be sent back to the web process by decidePolicyForResponse.
2030     if (m_inDecidePolicyForResponseSync) {
2031         m_syncMimeTypePolicyActionIsValid = true;
2032         m_syncMimeTypePolicyAction = action;
2033         m_syncMimeTypePolicyDownloadID = downloadID;
2034         return;
2035     }
2036
2037     // If we received a policy decision while in decidePolicyForNavigationAction the decision will
2038     // be sent back to the web process by decidePolicyForNavigationAction.
2039     if (m_inDecidePolicyForNavigationAction) {
2040         m_syncNavigationActionPolicyActionIsValid = true;
2041         m_syncNavigationActionPolicyAction = action;
2042         m_syncNavigationActionPolicyDownloadID = downloadID;
2043         return;
2044     }
2045
2046     m_process->send(Messages::WebPage::DidReceivePolicyDecision(frame->frameID(), listenerID, action, navigation ? navigation->navigationID() : 0, downloadID), m_pageID);
2047 }
2048
2049 void WebPageProxy::setUserAgent(const String& userAgent)
2050 {
2051     if (m_userAgent == userAgent)
2052         return;
2053     m_userAgent = userAgent;
2054
2055     if (!isValid())
2056         return;
2057     m_process->send(Messages::WebPage::SetUserAgent(m_userAgent), m_pageID);
2058 }
2059
2060 void WebPageProxy::setApplicationNameForUserAgent(const String& applicationName)
2061 {
2062     if (m_applicationNameForUserAgent == applicationName)
2063         return;
2064
2065     m_applicationNameForUserAgent = applicationName;
2066     if (!m_customUserAgent.isEmpty())
2067         return;
2068
2069     setUserAgent(standardUserAgent(m_applicationNameForUserAgent));
2070 }
2071
2072 void WebPageProxy::setCustomUserAgent(const String& customUserAgent)
2073 {
2074     if (m_customUserAgent == customUserAgent)
2075         return;
2076
2077     m_customUserAgent = customUserAgent;
2078
2079     if (m_customUserAgent.isEmpty()) {
2080         setUserAgent(standardUserAgent(m_applicationNameForUserAgent));
2081         return;
2082     }
2083
2084     setUserAgent(m_customUserAgent);
2085 }
2086
2087 void WebPageProxy::resumeActiveDOMObjectsAndAnimations()
2088 {
2089     if (!isValid() || !m_isPageSuspended)
2090         return;
2091
2092     m_isPageSuspended = false;
2093
2094     m_process->send(Messages::WebPage::ResumeActiveDOMObjectsAndAnimations(), m_pageID);
2095 }
2096
2097 void WebPageProxy::suspendActiveDOMObjectsAndAnimations()
2098 {
2099     if (!isValid() || m_isPageSuspended)
2100         return;
2101
2102     m_isPageSuspended = true;
2103
2104     m_process->send(Messages::WebPage::SuspendActiveDOMObjectsAndAnimations(), m_pageID);
2105 }
2106
2107 bool WebPageProxy::supportsTextEncoding() const
2108 {
2109     // FIXME (118840): We should probably only support this for text documents, not all non-image documents.
2110     return m_mainFrame && !m_mainFrame->isDisplayingStandaloneImageDocument();
2111 }
2112
2113 void WebPageProxy::setCustomTextEncodingName(const String& encodingName)
2114 {
2115     if (m_customTextEncodingName == encodingName)
2116         return;
2117     m_customTextEncodingName = encodingName;
2118
2119     if (!isValid())
2120         return;
2121     m_process->send(Messages::WebPage::SetCustomTextEncodingName(encodingName), m_pageID);
2122 }
2123
2124 void WebPageProxy::terminateProcess()
2125 {
2126     // requestTermination() is a no-op for launching processes, so we get into an inconsistent state by calling resetStateAfterProcessExited().
2127     // FIXME: A client can terminate the page at any time, so we should do something more meaningful than assert and fall apart in release builds.
2128     // See also <https://bugs.webkit.org/show_bug.cgi?id=136012>.
2129     ASSERT(m_process->state() != WebProcessProxy::State::Launching);
2130
2131     // NOTE: This uses a check of m_isValid rather than calling isValid() since
2132     // we want this to run even for pages being closed or that already closed.
2133     if (!m_isValid)
2134         return;
2135
2136     m_process->requestTermination();
2137     resetStateAfterProcessExited();
2138 }
2139
2140 SessionState WebPageProxy::sessionState(const std::function<bool (WebBackForwardListItem&)>& filter) const
2141 {
2142     SessionState sessionState;
2143
2144     sessionState.backForwardListState = m_backForwardList->backForwardListState(filter);
2145
2146     String provisionalURLString = m_pageLoadState.pendingAPIRequestURL();
2147     if (provisionalURLString.isEmpty())
2148         provisionalURLString = m_pageLoadState.provisionalURL();
2149
2150     if (!provisionalURLString.isEmpty())
2151         sessionState.provisionalURL = URL(URL(), provisionalURLString);
2152
2153     sessionState.renderTreeSize = renderTreeSize();
2154     return sessionState;
2155 }
2156
2157 RefPtr<API::Navigation> WebPageProxy::restoreFromSessionState(SessionState sessionState, bool navigate)
2158 {
2159     m_sessionRestorationRenderTreeSize = 0;
2160     m_hitRenderTreeSizeThreshold = false;
2161
2162     bool hasBackForwardList = !!sessionState.backForwardListState.currentIndex;
2163
2164     if (hasBackForwardList) {
2165         m_backForwardList->restoreFromState(WTF::move(sessionState.backForwardListState));
2166
2167         for (const auto& entry : m_backForwardList->entries())
2168             process().registerNewWebBackForwardListItem(entry.get());
2169
2170         process().send(Messages::WebPage::RestoreSession(m_backForwardList->itemStates()), m_pageID);
2171
2172         // The back / forward list was restored from a sessionState so we don't want to snapshot the current
2173         // page when navigating away. Suppress navigation snapshotting until the next load has committed.
2174         m_suppressNavigationSnapshotting = true;
2175     }
2176
2177     // FIXME: Navigating should be separate from state restoration.
2178     if (navigate) {
2179         m_sessionRestorationRenderTreeSize = sessionState.renderTreeSize;
2180         if (!m_sessionRestorationRenderTreeSize)
2181             m_hitRenderTreeSizeThreshold = true; // If we didn't get data on renderTreeSize, just don't fire the milestone.
2182
2183         if (!sessionState.provisionalURL.isNull())
2184             return loadRequest(sessionState.provisionalURL);
2185
2186         if (hasBackForwardList) {
2187             // FIXME: Do we have to null check the back forward list item here?
2188             if (WebBackForwardListItem* item = m_backForwardList->currentItem())
2189                 return goToBackForwardItem(item);
2190         }
2191     }
2192
2193     return nullptr;
2194 }
2195
2196 bool WebPageProxy::supportsTextZoom() const
2197 {
2198     // FIXME (118840): This should also return false for standalone media and plug-in documents.
2199     if (!m_mainFrame || m_mainFrame->isDisplayingStandaloneImageDocument())
2200         return false;
2201
2202     return true;
2203 }
2204
2205 void WebPageProxy::setTextZoomFactor(double zoomFactor)
2206 {
2207     if (!isValid())
2208         return;
2209
2210     if (m_textZoomFactor == zoomFactor)
2211         return;
2212
2213     m_textZoomFactor = zoomFactor;
2214     m_process->send(Messages::WebPage::SetTextZoomFactor(m_textZoomFactor), m_pageID);
2215 }
2216
2217 void WebPageProxy::setPageZoomFactor(double zoomFactor)
2218 {
2219     if (!isValid())
2220         return;
2221
2222     if (m_pageZoomFactor == zoomFactor)
2223         return;
2224
2225     m_pageZoomFactor = zoomFactor;
2226     m_process->send(Messages::WebPage::SetPageZoomFactor(m_pageZoomFactor), m_pageID);
2227 }
2228
2229 void WebPageProxy::setPageAndTextZoomFactors(double pageZoomFactor, double textZoomFactor)
2230 {
2231     if (!isValid())
2232         return;
2233
2234     if (m_pageZoomFactor == pageZoomFactor && m_textZoomFactor == textZoomFactor)
2235         return;
2236
2237     m_pageZoomFactor = pageZoomFactor;
2238     m_textZoomFactor = textZoomFactor;
2239     m_process->send(Messages::WebPage::SetPageAndTextZoomFactors(m_pageZoomFactor, m_textZoomFactor), m_pageID);
2240 }
2241
2242 double WebPageProxy::pageZoomFactor() const
2243 {
2244     // Zoom factor for non-PDF pages persists across page loads. We maintain a separate member variable for PDF
2245     // zoom which ensures that we don't use the PDF zoom for a normal page.
2246     if (m_mainFramePluginHandlesPageScaleGesture)
2247         return m_pluginZoomFactor;
2248     return m_pageZoomFactor;
2249 }
2250
2251 double WebPageProxy::pageScaleFactor() const
2252 {
2253     // PDF documents use zoom and scale factors to size themselves appropriately in the window. We store them
2254     // separately but decide which to return based on the main frame.
2255     if (m_mainFramePluginHandlesPageScaleGesture)
2256         return m_pluginScaleFactor;
2257     return m_pageScaleFactor;
2258 }
2259
2260 void WebPageProxy::scalePage(double scale, const IntPoint& origin)
2261 {
2262     ASSERT(scale > 0);
2263
2264     if (!isValid())
2265         return;
2266
2267     m_pageScaleFactor = scale;
2268     m_process->send(Messages::WebPage::ScalePage(scale, origin), m_pageID);
2269 }
2270
2271 void WebPageProxy::scalePageInViewCoordinates(double scale, const IntPoint& centerInViewCoordinates)
2272 {
2273     ASSERT(scale > 0);
2274
2275     if (!isValid())
2276         return;
2277
2278     m_pageScaleFactor = scale;
2279     m_process->send(Messages::WebPage::ScalePageInViewCoordinates(scale, centerInViewCoordinates), m_pageID);
2280 }
2281
2282 void WebPageProxy::scaleView(double scale)
2283 {
2284     ASSERT(scale > 0);
2285
2286     if (!isValid())
2287         return;
2288
2289     m_viewScaleFactor = scale;
2290     m_process->send(Messages::WebPage::ScaleView(scale), m_pageID);
2291 }
2292
2293 void WebPageProxy::setIntrinsicDeviceScaleFactor(float scaleFactor)
2294 {
2295     if (m_intrinsicDeviceScaleFactor == scaleFactor)
2296         return;
2297
2298     m_intrinsicDeviceScaleFactor = scaleFactor;
2299
2300     if (m_drawingArea)
2301         m_drawingArea->deviceScaleFactorDidChange();
2302 }
2303
2304 void WebPageProxy::windowScreenDidChange(PlatformDisplayID displayID)
2305 {
2306     if (!isValid())
2307         return;
2308
2309     m_process->send(Messages::WebPage::WindowScreenDidChange(displayID), m_pageID);
2310 }
2311
2312 float WebPageProxy::deviceScaleFactor() const
2313 {
2314     if (m_customDeviceScaleFactor)
2315         return m_customDeviceScaleFactor;
2316     return m_intrinsicDeviceScaleFactor;
2317 }
2318
2319 void WebPageProxy::setCustomDeviceScaleFactor(float customScaleFactor)
2320 {
2321     if (!isValid())
2322         return;
2323
2324     // FIXME: Remove this once we bump cairo requirements to support HiDPI.
2325     // https://bugs.webkit.org/show_bug.cgi?id=133378
2326 #if USE(CAIRO) && !HAVE(CAIRO_SURFACE_SET_DEVICE_SCALE)
2327     return;
2328 #endif
2329
2330     if (m_customDeviceScaleFactor == customScaleFactor)
2331         return;
2332
2333     float oldScaleFactor = deviceScaleFactor();
2334
2335     m_customDeviceScaleFactor = customScaleFactor;
2336
2337     if (deviceScaleFactor() != oldScaleFactor)
2338         m_drawingArea->deviceScaleFactorDidChange();
2339 }
2340
2341 void WebPageProxy::setUseFixedLayout(bool fixed)
2342 {
2343     if (!isValid())
2344         return;
2345
2346     // This check is fine as the value is initialized in the web
2347     // process as part of the creation parameters.
2348     if (fixed == m_useFixedLayout)
2349         return;
2350
2351     m_useFixedLayout = fixed;
2352     if (!fixed)
2353         m_fixedLayoutSize = IntSize();
2354     m_process->send(Messages::WebPage::SetUseFixedLayout(fixed), m_pageID);
2355 }
2356
2357 void WebPageProxy::setFixedLayoutSize(const IntSize& size)
2358 {
2359     if (!isValid())
2360         return;
2361
2362     if (size == m_fixedLayoutSize)
2363         return;
2364
2365     m_fixedLayoutSize = size;
2366     m_process->send(Messages::WebPage::SetFixedLayoutSize(size), m_pageID);
2367 }
2368
2369 void WebPageProxy::listenForLayoutMilestones(WebCore::LayoutMilestones milestones)
2370 {
2371     if (!isValid())
2372         return;
2373
2374     m_wantsSessionRestorationRenderTreeSizeThresholdEvent = milestones & WebCore::ReachedSessionRestorationRenderTreeSizeThreshold;
2375
2376     m_process->send(Messages::WebPage::ListenForLayoutMilestones(milestones), m_pageID);
2377 }
2378
2379 void WebPageProxy::setSuppressScrollbarAnimations(bool suppressAnimations)
2380 {
2381     if (!isValid())
2382         return;
2383
2384     if (suppressAnimations == m_suppressScrollbarAnimations)
2385         return;
2386
2387     m_suppressScrollbarAnimations = suppressAnimations;
2388     m_process->send(Messages::WebPage::SetSuppressScrollbarAnimations(suppressAnimations), m_pageID);
2389 }
2390
2391 bool WebPageProxy::rubberBandsAtLeft() const
2392 {
2393     return m_rubberBandsAtLeft;
2394 }
2395
2396 void WebPageProxy::setRubberBandsAtLeft(bool rubberBandsAtLeft)
2397 {
2398     m_rubberBandsAtLeft = rubberBandsAtLeft;
2399 }
2400
2401 bool WebPageProxy::rubberBandsAtRight() const
2402 {
2403     return m_rubberBandsAtRight;
2404 }
2405
2406 void WebPageProxy::setRubberBandsAtRight(bool rubberBandsAtRight)
2407 {
2408     m_rubberBandsAtRight = rubberBandsAtRight;
2409 }
2410
2411 bool WebPageProxy::rubberBandsAtTop() const
2412 {
2413     return m_rubberBandsAtTop;
2414 }
2415
2416 void WebPageProxy::setRubberBandsAtTop(bool rubberBandsAtTop)
2417 {
2418     m_rubberBandsAtTop = rubberBandsAtTop;
2419 }
2420
2421 bool WebPageProxy::rubberBandsAtBottom() const
2422 {
2423     return m_rubberBandsAtBottom;
2424 }
2425
2426 void WebPageProxy::setRubberBandsAtBottom(bool rubberBandsAtBottom)
2427 {
2428     m_rubberBandsAtBottom = rubberBandsAtBottom;
2429 }
2430
2431 void WebPageProxy::setEnableVerticalRubberBanding(bool enableVerticalRubberBanding)
2432 {
2433     if (enableVerticalRubberBanding == m_enableVerticalRubberBanding)
2434         return;
2435
2436     m_enableVerticalRubberBanding = enableVerticalRubberBanding;
2437
2438     if (!isValid())
2439         return;
2440     m_process->send(Messages::WebPage::SetEnableVerticalRubberBanding(enableVerticalRubberBanding), m_pageID);
2441 }
2442
2443 bool WebPageProxy::verticalRubberBandingIsEnabled() const
2444 {
2445     return m_enableVerticalRubberBanding;
2446 }
2447
2448 void WebPageProxy::setEnableHorizontalRubberBanding(bool enableHorizontalRubberBanding)
2449 {
2450     if (enableHorizontalRubberBanding == m_enableHorizontalRubberBanding)
2451         return;
2452
2453     m_enableHorizontalRubberBanding = enableHorizontalRubberBanding;
2454
2455     if (!isValid())
2456         return;
2457     m_process->send(Messages::WebPage::SetEnableHorizontalRubberBanding(enableHorizontalRubberBanding), m_pageID);
2458 }
2459
2460 bool WebPageProxy::horizontalRubberBandingIsEnabled() const
2461 {
2462     return m_enableHorizontalRubberBanding;
2463 }
2464
2465 void WebPageProxy::setBackgroundExtendsBeyondPage(bool backgroundExtendsBeyondPage)
2466 {
2467     if (backgroundExtendsBeyondPage == m_backgroundExtendsBeyondPage)
2468         return;
2469
2470     m_backgroundExtendsBeyondPage = backgroundExtendsBeyondPage;
2471
2472     if (!isValid())
2473         return;
2474     m_process->send(Messages::WebPage::SetBackgroundExtendsBeyondPage(backgroundExtendsBeyondPage), m_pageID);
2475 }
2476
2477 bool WebPageProxy::backgroundExtendsBeyondPage() const
2478 {
2479     return m_backgroundExtendsBeyondPage;
2480 }
2481
2482 void WebPageProxy::setPaginationMode(WebCore::Pagination::Mode mode)
2483 {
2484     if (mode == m_paginationMode)
2485         return;
2486
2487     m_paginationMode = mode;
2488
2489     if (!isValid())
2490         return;
2491     m_process->send(Messages::WebPage::SetPaginationMode(mode), m_pageID);
2492 }
2493
2494 void WebPageProxy::setPaginationBehavesLikeColumns(bool behavesLikeColumns)
2495 {
2496     if (behavesLikeColumns == m_paginationBehavesLikeColumns)
2497         return;
2498
2499     m_paginationBehavesLikeColumns = behavesLikeColumns;
2500
2501     if (!isValid())
2502         return;
2503     m_process->send(Messages::WebPage::SetPaginationBehavesLikeColumns(behavesLikeColumns), m_pageID);
2504 }
2505
2506 void WebPageProxy::setPageLength(double pageLength)
2507 {
2508     if (pageLength == m_pageLength)
2509         return;
2510
2511     m_pageLength = pageLength;
2512
2513     if (!isValid())
2514         return;
2515     m_process->send(Messages::WebPage::SetPageLength(pageLength), m_pageID);
2516 }
2517
2518 void WebPageProxy::setGapBetweenPages(double gap)
2519 {
2520     if (gap == m_gapBetweenPages)
2521         return;
2522
2523     m_gapBetweenPages = gap;
2524
2525     if (!isValid())
2526         return;
2527     m_process->send(Messages::WebPage::SetGapBetweenPages(gap), m_pageID);
2528 }
2529
2530 void WebPageProxy::pageScaleFactorDidChange(double scaleFactor)
2531 {
2532     m_pageScaleFactor = scaleFactor;
2533 }
2534
2535 void WebPageProxy::pluginScaleFactorDidChange(double pluginScaleFactor)
2536 {
2537     m_pluginScaleFactor = pluginScaleFactor;
2538 }
2539
2540 void WebPageProxy::pluginZoomFactorDidChange(double pluginZoomFactor)
2541 {
2542     m_pluginZoomFactor = pluginZoomFactor;
2543 }
2544
2545 void WebPageProxy::findStringMatches(const String& string, FindOptions options, unsigned maxMatchCount)
2546 {
2547     if (string.isEmpty()) {
2548         didFindStringMatches(string, Vector<Vector<WebCore::IntRect>> (), 0);
2549         return;
2550     }
2551
2552     m_process->send(Messages::WebPage::FindStringMatches(string, options, maxMatchCount), m_pageID);
2553 }
2554
2555 void WebPageProxy::findString(const String& string, FindOptions options, unsigned maxMatchCount)
2556 {
2557     m_process->send(Messages::WebPage::FindString(string, options, maxMatchCount), m_pageID);
2558 }
2559
2560 void WebPageProxy::getImageForFindMatch(int32_t matchIndex)
2561 {
2562     m_process->send(Messages::WebPage::GetImageForFindMatch(matchIndex), m_pageID);
2563 }
2564
2565 void WebPageProxy::selectFindMatch(int32_t matchIndex)
2566 {
2567     m_process->send(Messages::WebPage::SelectFindMatch(matchIndex), m_pageID);
2568 }
2569
2570 void WebPageProxy::hideFindUI()
2571 {
2572     m_process->send(Messages::WebPage::HideFindUI(), m_pageID);
2573 }
2574
2575 void WebPageProxy::countStringMatches(const String& string, FindOptions options, unsigned maxMatchCount)
2576 {
2577     if (!isValid())
2578         return;
2579
2580     m_process->send(Messages::WebPage::CountStringMatches(string, options, maxMatchCount), m_pageID);
2581 }
2582
2583 void WebPageProxy::runJavaScriptInMainFrame(const String& script, std::function<void (API::SerializedScriptValue*, bool hadException, const ExceptionDetails&, CallbackBase::Error)> callbackFunction)
2584 {
2585     if (!isValid()) {
2586         callbackFunction(nullptr, false, { }, CallbackBase::Error::Unknown);
2587         return;
2588     }
2589
2590     uint64_t callbackID = m_callbacks.put(WTF::move(callbackFunction), m_process->throttler().backgroundActivityToken());
2591     m_process->send(Messages::WebPage::RunJavaScriptInMainFrame(script, callbackID), m_pageID);
2592 }
2593
2594 void WebPageProxy::getRenderTreeExternalRepresentation(std::function<void (const String&, CallbackBase::Error)> callbackFunction)
2595 {
2596     if (!isValid()) {
2597         callbackFunction(String(), CallbackBase::Error::Unknown);
2598         return;
2599     }
2600
2601     uint64_t callbackID = m_callbacks.put(WTF::move(callbackFunction), m_process->throttler().backgroundActivityToken());
2602     m_process->send(Messages::WebPage::GetRenderTreeExternalRepresentation(callbackID), m_pageID);
2603 }
2604
2605 void WebPageProxy::getSourceForFrame(WebFrameProxy* frame, std::function<void (const String&, CallbackBase::Error)> callbackFunction)
2606 {
2607     if (!isValid()) {
2608         callbackFunction(String(), CallbackBase::Error::Unknown);
2609         return;
2610     }
2611
2612     uint64_t callbackID = m_callbacks.put(WTF::move(callbackFunction), m_process->throttler().backgroundActivityToken());
2613     m_loadDependentStringCallbackIDs.add(callbackID);
2614     m_process->send(Messages::WebPage::GetSourceForFrame(frame->frameID(), callbackID), m_pageID);
2615 }
2616
2617 void WebPageProxy::getContentsAsString(std::function<void (const String&, CallbackBase::Error)> callbackFunction)
2618 {
2619     if (!isValid()) {
2620         callbackFunction(String(), CallbackBase::Error::Unknown);
2621         return;
2622     }
2623
2624     uint64_t callbackID = m_callbacks.put(WTF::move(callbackFunction), m_process->throttler().backgroundActivityToken());
2625     m_loadDependentStringCallbackIDs.add(callbackID);
2626     m_process->send(Messages::WebPage::GetContentsAsString(callbackID), m_pageID);
2627 }
2628
2629 void WebPageProxy::getBytecodeProfile(std::function<void (const String&, CallbackBase::Error)> callbackFunction)
2630 {
2631     if (!isValid()) {
2632         callbackFunction(String(), CallbackBase::Error::Unknown);
2633         return;
2634     }
2635
2636     uint64_t callbackID = m_callbacks.put(WTF::move(callbackFunction), m_process->throttler().backgroundActivityToken());
2637     m_loadDependentStringCallbackIDs.add(callbackID);
2638     m_process->send(Messages::WebPage::GetBytecodeProfile(callbackID), m_pageID);
2639 }
2640
2641 #if ENABLE(MHTML)
2642 void WebPageProxy::getContentsAsMHTMLData(std::function<void (API::Data*, CallbackBase::Error)> callbackFunction)
2643 {
2644     if (!isValid()) {
2645         callbackFunction(nullptr, CallbackBase::Error::Unknown);
2646         return;
2647     }
2648
2649     uint64_t callbackID = m_callbacks.put(WTF::move(callbackFunction), m_process->throttler().backgroundActivityToken());
2650     m_process->send(Messages::WebPage::GetContentsAsMHTMLData(callbackID), m_pageID);
2651 }
2652 #endif
2653
2654 void WebPageProxy::getSelectionOrContentsAsString(std::function<void (const String&, CallbackBase::Error)> callbackFunction)
2655 {
2656     if (!isValid()) {
2657         callbackFunction(String(), CallbackBase::Error::Unknown);
2658         return;
2659     }
2660
2661     uint64_t callbackID = m_callbacks.put(WTF::move(callbackFunction), m_process->throttler().backgroundActivityToken());
2662     m_process->send(Messages::WebPage::GetSelectionOrContentsAsString(callbackID), m_pageID);
2663 }
2664
2665 void WebPageProxy::getSelectionAsWebArchiveData(std::function<void (API::Data*, CallbackBase::Error)> callbackFunction)
2666 {
2667     if (!isValid()) {
2668         callbackFunction(nullptr, CallbackBase::Error::Unknown);
2669         return;
2670     }
2671
2672     uint64_t callbackID = m_callbacks.put(WTF::move(callbackFunction), m_process->throttler().backgroundActivityToken());
2673     m_process->send(Messages::WebPage::GetSelectionAsWebArchiveData(callbackID), m_pageID);
2674 }
2675
2676 void WebPageProxy::getMainResourceDataOfFrame(WebFrameProxy* frame, std::function<void (API::Data*, CallbackBase::Error)> callbackFunction)
2677 {
2678     if (!isValid() || !frame) {
2679         callbackFunction(nullptr, CallbackBase::Error::Unknown);
2680         return;
2681     }
2682
2683     uint64_t callbackID = m_callbacks.put(WTF::move(callbackFunction), m_process->throttler().backgroundActivityToken());
2684     m_process->send(Messages::WebPage::GetMainResourceDataOfFrame(frame->frameID(), callbackID), m_pageID);
2685 }
2686
2687 void WebPageProxy::getResourceDataFromFrame(WebFrameProxy* frame, API::URL* resourceURL, std::function<void (API::Data*, CallbackBase::Error)> callbackFunction)
2688 {
2689     if (!isValid()) {
2690         callbackFunction(nullptr, CallbackBase::Error::Unknown);
2691         return;
2692     }
2693
2694     uint64_t callbackID = m_callbacks.put(WTF::move(callbackFunction), m_process->throttler().backgroundActivityToken());
2695     m_process->send(Messages::WebPage::GetResourceDataFromFrame(frame->frameID(), resourceURL->string(), callbackID), m_pageID);
2696 }
2697
2698 void WebPageProxy::getWebArchiveOfFrame(WebFrameProxy* frame, std::function<void (API::Data*, CallbackBase::Error)> callbackFunction)
2699 {
2700     if (!isValid()) {
2701         callbackFunction(nullptr, CallbackBase::Error::Unknown);
2702         return;
2703     }
2704
2705     uint64_t callbackID = m_callbacks.put(WTF::move(callbackFunction), m_process->throttler().backgroundActivityToken());
2706     m_process->send(Messages::WebPage::GetWebArchiveOfFrame(frame->frameID(), callbackID), m_pageID);
2707 }
2708
2709 void WebPageProxy::forceRepaint(PassRefPtr<VoidCallback> prpCallback)
2710 {
2711     RefPtr<VoidCallback> callback = prpCallback;
2712     if (!isValid()) {
2713         // FIXME: If the page is invalid we should not call the callback. It'd be better to just return false from forceRepaint.
2714         callback->invalidate(CallbackBase::Error::OwnerWasInvalidated);
2715         return;
2716     }
2717
2718     uint64_t callbackID = callback->callbackID();
2719     m_callbacks.put(callback);
2720     m_drawingArea->waitForBackingStoreUpdateOnNextPaint();
2721     m_process->send(Messages::WebPage::ForceRepaint(callbackID), m_pageID);
2722 }
2723
2724 void WebPageProxy::preferencesDidChange()
2725 {
2726     if (!isValid())
2727         return;
2728
2729 #if ENABLE(INSPECTOR_SERVER)
2730     if (m_preferences->developerExtrasEnabled())
2731         inspector()->enableRemoteInspection();
2732 #endif
2733
2734     updateProccessSuppressionState();
2735
2736     m_pageClient.preferencesDidChange();
2737
2738     // FIXME: It probably makes more sense to send individual preference changes.
2739     // However, WebKitTestRunner depends on getting a preference change notification
2740     // even if nothing changed in UI process, so that overrides get removed.
2741
2742     // Preferences need to be updated during synchronous printing to make "print backgrounds" preference work when toggled from a print dialog checkbox.
2743     m_process->send(Messages::WebPage::PreferencesDidChange(preferencesStore()), m_pageID, m_isPerformingDOMPrintOperation ? IPC::DispatchMessageEvenWhenWaitingForSyncReply : 0);
2744 }
2745
2746 void WebPageProxy::didCreateMainFrame(uint64_t frameID)
2747 {
2748     PageClientProtector protector(m_pageClient);
2749
2750     MESSAGE_CHECK(!m_mainFrame);
2751     MESSAGE_CHECK(m_process->canCreateFrame(frameID));
2752
2753     m_mainFrame = WebFrameProxy::create(this, frameID);
2754
2755     // Add the frame to the process wide map.
2756     m_process->frameCreated(frameID, m_mainFrame.get());
2757 }
2758
2759 void WebPageProxy::didCreateSubframe(uint64_t frameID)
2760 {
2761     PageClientProtector protector(m_pageClient);
2762
2763     MESSAGE_CHECK(m_mainFrame);
2764     MESSAGE_CHECK(m_process->canCreateFrame(frameID));
2765
2766     RefPtr<WebFrameProxy> subFrame = WebFrameProxy::create(this, frameID);
2767
2768     // Add the frame to the process wide map.
2769     m_process->frameCreated(frameID, subFrame.get());
2770 }
2771
2772 double WebPageProxy::estimatedProgress() const
2773 {
2774     return m_pageLoadState.estimatedProgress();
2775 }
2776
2777 void WebPageProxy::didStartProgress()
2778 {
2779     PageClientProtector protector(m_pageClient);
2780
2781     auto transaction = m_pageLoadState.transaction();
2782     m_pageLoadState.didStartProgress(transaction);
2783
2784     m_pageLoadState.commitChanges();
2785     m_loaderClient->didStartProgress(*this);
2786 }
2787
2788 void WebPageProxy::didChangeProgress(double value)
2789 {
2790     PageClientProtector protector(m_pageClient);
2791
2792     auto transaction = m_pageLoadState.transaction();
2793     m_pageLoadState.didChangeProgress(transaction, value);
2794
2795     m_pageLoadState.commitChanges();
2796     m_loaderClient->didChangeProgress(*this);
2797 }
2798
2799 void WebPageProxy::didFinishProgress()
2800 {
2801     PageClientProtector protector(m_pageClient);
2802
2803     auto transaction = m_pageLoadState.transaction();
2804     m_pageLoadState.didFinishProgress(transaction);
2805
2806     m_pageLoadState.commitChanges();
2807     m_loaderClient->didFinishProgress(*this);
2808 }
2809
2810 void WebPageProxy::setNetworkRequestsInProgress(bool networkRequestsInProgress)
2811 {
2812     auto transaction = m_pageLoadState.transaction();
2813     m_pageLoadState.setNetworkRequestsInProgress(transaction, networkRequestsInProgress);
2814 }
2815
2816 void WebPageProxy::didDestroyNavigation(uint64_t navigationID)
2817 {
2818     PageClientProtector protector(m_pageClient);
2819
2820     // FIXME: Message check the navigationID.
2821     m_navigationState->didDestroyNavigation(navigationID);
2822 }
2823
2824 void WebPageProxy::didStartProvisionalLoadForFrame(uint64_t frameID, uint64_t navigationID, const String& url, const String& unreachableURL, const UserData& userData)
2825 {
2826     PageClientProtector protector(m_pageClient);
2827
2828     auto transaction = m_pageLoadState.transaction();
2829
2830     m_pageLoadState.clearPendingAPIRequestURL(transaction);
2831
2832     WebFrameProxy* frame = m_process->webFrame(frameID);
2833     MESSAGE_CHECK(frame);
2834     MESSAGE_CHECK_URL(url);
2835
2836     // FIXME: We should message check that navigationID is not zero here, but it's currently zero for some navigations through the page cache.
2837     RefPtr<API::Navigation> navigation;
2838     if (frame->isMainFrame() && navigationID)
2839         navigation = &navigationState().navigation(navigationID);
2840
2841     if (frame->isMainFrame())
2842         m_pageLoadState.didStartProvisionalLoad(transaction, url, unreachableURL);
2843
2844     frame->setUnreachableURL(unreachableURL);
2845     frame->didStartProvisionalLoad(url);
2846
2847     m_pageLoadState.commitChanges();
2848     if (m_navigationClient) {
2849         if (frame->isMainFrame())
2850             m_navigationClient->didStartProvisionalNavigation(*this, navigation.get(), m_process->transformHandlesToObjects(userData.object()).get());
2851     } else
2852         m_loaderClient->didStartProvisionalLoadForFrame(*this, *frame, navigation.get(), m_process->transformHandlesToObjects(userData.object()).get());
2853 }
2854
2855 void WebPageProxy::didReceiveServerRedirectForProvisionalLoadForFrame(uint64_t frameID, uint64_t navigationID, const String& url, const UserData& userData)
2856 {
2857     PageClientProtector protector(m_pageClient);
2858
2859     WebFrameProxy* frame = m_process->webFrame(frameID);
2860     MESSAGE_CHECK(frame);
2861     MESSAGE_CHECK_URL(url);
2862
2863     // FIXME: We should message check that navigationID is not zero here, but it's currently zero for some navigations through the page cache.
2864     RefPtr<API::Navigation> navigation;
2865     if (frame->isMainFrame() && navigationID)
2866         navigation = &navigationState().navigation(navigationID);
2867
2868     auto transaction = m_pageLoadState.transaction();
2869
2870     if (frame->isMainFrame())
2871         m_pageLoadState.didReceiveServerRedirectForProvisionalLoad(transaction, url);
2872
2873     frame->didReceiveServerRedirectForProvisionalLoad(url);
2874
2875     m_pageLoadState.commitChanges();
2876     if (m_navigationClient) {
2877         if (frame->isMainFrame())
2878             m_navigationClient->didReceiveServerRedirectForProvisionalNavigation(*this, navigation.get(), m_process->transformHandlesToObjects(userData.object()).get());
2879     } else
2880         m_loaderClient->didReceiveServerRedirectForProvisionalLoadForFrame(*this, *frame, navigation.get(), m_process->transformHandlesToObjects(userData.object()).get());
2881 }
2882
2883 void WebPageProxy::didChangeProvisionalURLForFrame(uint64_t frameID, uint64_t, const String& url)
2884 {
2885     PageClientProtector protector(m_pageClient);
2886
2887     WebFrameProxy* frame = m_process->webFrame(frameID);
2888     MESSAGE_CHECK(frame);
2889     MESSAGE_CHECK(frame->frameLoadState().state() == FrameLoadState::State::Provisional);
2890     MESSAGE_CHECK_URL(url);
2891
2892     auto transaction = m_pageLoadState.transaction();
2893
2894     // Internally, we handle this the same way we handle a server redirect. There are no client callbacks
2895     // for this, but if this is the main frame, clients may observe a change to the page's URL.
2896     if (frame->isMainFrame())
2897         m_pageLoadState.didReceiveServerRedirectForProvisionalLoad(transaction, url);
2898
2899     frame->didReceiveServerRedirectForProvisionalLoad(url);
2900 }
2901
2902 void WebPageProxy::didFailProvisionalLoadForFrame(uint64_t frameID, const SecurityOriginData& frameSecurityOrigin, uint64_t navigationID, const String& provisionalURL, const ResourceError& error, const UserData& userData)
2903 {
2904     PageClientProtector protector(m_pageClient);
2905
2906     WebFrameProxy* frame = m_process->webFrame(frameID);
2907     MESSAGE_CHECK(frame);
2908
2909     // FIXME: We should message check that navigationID is not zero here, but it's currently zero for some navigations through the page cache.
2910     RefPtr<API::Navigation> navigation;
2911     if (frame->isMainFrame() && navigationID)
2912         navigation = navigationState().takeNavigation(navigationID);
2913
2914     auto transaction = m_pageLoadState.transaction();
2915
2916     if (frame->isMainFrame())
2917         m_pageLoadState.didFailProvisionalLoad(transaction);
2918
2919     frame->didFailProvisionalLoad();
2920
2921     m_pageLoadState.commitChanges();
2922
2923     ASSERT(!m_failingProvisionalLoadURL);
2924     m_failingProvisionalLoadURL = provisionalURL;
2925
2926     if (m_navigationClient) {
2927         if (frame->isMainFrame())
2928             m_navigationClient->didFailProvisionalNavigationWithError(*this, *frame, navigation.get(), error, m_process->transformHandlesToObjects(userData.object()).get());
2929         else {
2930             // FIXME: Get the main frame's current navigation.
2931             m_navigationClient->didFailProvisionalLoadInSubframeWithError(*this, *frame, frameSecurityOrigin, nullptr, error, m_process->transformHandlesToObjects(userData.object()).get());
2932         }
2933     } else
2934         m_loaderClient->didFailProvisionalLoadWithErrorForFrame(*this, *frame, navigation.get(), error, m_process->transformHandlesToObjects(userData.object()).get());
2935
2936     m_failingProvisionalLoadURL = { };
2937 }
2938
2939 void WebPageProxy::clearLoadDependentCallbacks()
2940 {
2941     Vector<uint64_t> callbackIDsCopy;
2942     copyToVector(m_loadDependentStringCallbackIDs, callbackIDsCopy);
2943     m_loadDependentStringCallbackIDs.clear();
2944
2945     for (size_t i = 0; i < callbackIDsCopy.size(); ++i) {
2946         auto callback = m_callbacks.take<StringCallback>(callbackIDsCopy[i]);
2947         if (callback)
2948             callback->invalidate();
2949     }
2950 }
2951
2952 void WebPageProxy::didCommitLoadForFrame(uint64_t frameID, uint64_t navigationID, const String& mimeType, bool frameHasCustomContentProvider, bool pluginHandlesPageScaleGesture, uint32_t opaqueFrameLoadType, const WebCore::CertificateInfo& certificateInfo, bool containsPluginDocument, const UserData& userData)
2953 {
2954     PageClientProtector protector(m_pageClient);
2955
2956     WebFrameProxy* frame = m_process->webFrame(frameID);
2957     MESSAGE_CHECK(frame);
2958
2959     // FIXME: We should message check that navigationID is not zero here, but it's currently zero for some navigations through the page cache.
2960     RefPtr<API::Navigation> navigation;
2961     if (frame->isMainFrame() && navigationID)
2962         navigation = &navigationState().navigation(navigationID);
2963
2964 #if PLATFORM(IOS)
2965     if (frame->isMainFrame()) {
2966         m_hasReceivedLayerTreeTransactionAfterDidCommitLoad = false;
2967         m_firstLayerTreeTransactionIdAfterDidCommitLoad = downcast<RemoteLayerTreeDrawingAreaProxy>(*drawingArea()).nextLayerTreeTransactionID();
2968     }
2969 #endif
2970
2971     auto transaction = m_pageLoadState.transaction();
2972     bool markPageInsecure = m_treatsSHA1CertificatesAsInsecure && certificateInfo.containsNonRootSHA1SignedCertificate();
2973     Ref<WebCertificateInfo> webCertificateInfo = WebCertificateInfo::create(certificateInfo);
2974     if (frame->isMainFrame()) {
2975         m_pageLoadState.didCommitLoad(transaction, webCertificateInfo, markPageInsecure);
2976         m_suppressNavigationSnapshotting = false;
2977     } else if (markPageInsecure)
2978         m_pageLoadState.didDisplayOrRunInsecureContent(transaction);
2979
2980 #if USE(APPKIT)
2981     // FIXME (bug 59111): didCommitLoadForFrame comes too late when restoring a page from b/f cache, making us disable secure event mode in password fields.
2982     // FIXME: A load going on in one frame shouldn't affect text editing in other frames on the page.
2983     m_pageClient.resetSecureInputState();
2984     m_pageClient.dismissContentRelativeChildWindows();
2985 #endif
2986
2987     clearLoadDependentCallbacks();
2988
2989     frame->didCommitLoad(mimeType, webCertificateInfo, containsPluginDocument);
2990
2991     if (frame->isMainFrame()) {
2992         m_mainFrameHasCustomContentProvider = frameHasCustomContentProvider;
2993
2994         if (m_mainFrameHasCustomContentProvider) {
2995             // Always assume that the main frame is pinned here, since the custom representation view will handle
2996             // any wheel events and dispatch them to the WKView when necessary.
2997             m_mainFrameIsPinnedToLeftSide = true;
2998             m_mainFrameIsPinnedToRightSide = true;
2999             m_mainFrameIsPinnedToTopSide = true;
3000             m_mainFrameIsPinnedToBottomSide = true;
3001
3002             m_uiClient->pinnedStateDidChange(*this);
3003         }
3004         m_pageClient.didCommitLoadForMainFrame(mimeType, frameHasCustomContentProvider);
3005     }
3006
3007     // Even if WebPage has the default pageScaleFactor (and therefore doesn't reset it),
3008     // WebPageProxy's cache of the value can get out of sync (e.g. in the case where a
3009     // plugin is handling page scaling itself) so we should reset it to the default
3010     // for standard main frame loads.
3011     if (frame->isMainFrame()) {
3012         m_mainFramePluginHandlesPageScaleGesture = pluginHandlesPageScaleGesture;
3013
3014         if (static_cast<FrameLoadType>(opaqueFrameLoadType) == FrameLoadType::Standard) {
3015             m_pageScaleFactor = 1;
3016             m_pluginScaleFactor = 1;
3017         }
3018     }
3019
3020     m_pageLoadState.commitChanges();
3021     if (m_navigationClient) {
3022         if (frame->isMainFrame())
3023             m_navigationClient->didCommitNavigation(*this, navigation.get(), m_process->transformHandlesToObjects(userData.object()).get());
3024     } else
3025         m_loaderClient->didCommitLoadForFrame(*this, *frame, navigation.get(), m_process->transformHandlesToObjects(userData.object()).get());
3026 }
3027
3028 void WebPageProxy::didFinishDocumentLoadForFrame(uint64_t frameID, uint64_t navigationID, const UserData& userData)
3029 {
3030     PageClientProtector protector(m_pageClient);
3031
3032     WebFrameProxy* frame = m_process->webFrame(frameID);
3033     MESSAGE_CHECK(frame);
3034
3035     // FIXME: We should message check that navigationID is not zero here, but it's currently zero for some navigations through the page cache.
3036     RefPtr<API::Navigation> navigation;
3037     if (frame->isMainFrame() && navigationID)
3038         navigation = &navigationState().navigation(navigationID);
3039
3040     if (m_navigationClient) {
3041         if (frame->isMainFrame())
3042             m_navigationClient->didFinishDocumentLoad(*this, navigation.get(), m_process->transformHandlesToObjects(userData.object()).get());
3043     } else
3044         m_loaderClient->didFinishDocumentLoadForFrame(*this, *frame, navigation.get(), m_process->transformHandlesToObjects(userData.object()).get());
3045 }
3046
3047 void WebPageProxy::didFinishLoadForFrame(uint64_t frameID, uint64_t navigationID, const UserData& userData)
3048 {
3049     PageClientProtector protector(m_pageClient);
3050
3051     WebFrameProxy* frame = m_process->webFrame(frameID);
3052     MESSAGE_CHECK(frame);
3053
3054     // FIXME: We should message check that navigationID is not zero here, but it's currently zero for some navigations through the page cache.
3055     RefPtr<API::Navigation> navigation;
3056     if (frame->isMainFrame() && navigationID)
3057         navigation = &navigationState().navigation(navigationID);
3058
3059     auto transaction = m_pageLoadState.transaction();
3060
3061     bool isMainFrame = frame->isMainFrame();
3062     if (isMainFrame)
3063         m_pageLoadState.didFinishLoad(transaction);
3064
3065     frame->didFinishLoad();
3066
3067     m_pageLoadState.commitChanges();
3068     if (m_navigationClient) {
3069         if (isMainFrame)
3070             m_navigationClient->didFinishNavigation(*this, navigation.get(), m_process->transformHandlesToObjects(userData.object()).get());
3071     } else
3072         m_loaderClient->didFinishLoadForFrame(*this, *frame, navigation.get(), m_process->transformHandlesToObjects(userData.object()).get());
3073
3074     if (isMainFrame)
3075         m_pageClient.didFinishLoadForMainFrame();
3076 }
3077
3078 void WebPageProxy::didFailLoadForFrame(uint64_t frameID, uint64_t navigationID, const ResourceError& error, const UserData& userData)
3079 {
3080     PageClientProtector protector(m_pageClient);
3081
3082     WebFrameProxy* frame = m_process->webFrame(frameID);
3083     MESSAGE_CHECK(frame);
3084
3085     // FIXME: We should message check that navigationID is not zero here, but it's currently zero for some navigations through the page cache.
3086     RefPtr<API::Navigation> navigation;
3087     if (frame->isMainFrame() && navigationID)
3088         navigation = &navigationState().navigation(navigationID);
3089
3090     clearLoadDependentCallbacks();
3091
3092     auto transaction = m_pageLoadState.transaction();
3093
3094     bool isMainFrame = frame->isMainFrame();
3095
3096     if (isMainFrame)
3097         m_pageLoadState.didFailLoad(transaction);
3098
3099     frame->didFailLoad();
3100
3101     m_pageLoadState.commitChanges();
3102     if (m_navigationClient) {
3103         if (frame->isMainFrame())
3104             m_navigationClient->didFailNavigationWithError(*this, *frame, navigation.get(), error, m_process->transformHandlesToObjects(userData.object()).get());
3105     } else
3106         m_loaderClient->didFailLoadWithErrorForFrame(*this, *frame, navigation.get(), error, m_process->transformHandlesToObjects(userData.object()).get());
3107
3108     if (isMainFrame)
3109         m_pageClient.didFailLoadForMainFrame();
3110 }
3111
3112 void WebPageProxy::didSameDocumentNavigationForFrame(uint64_t frameID, uint64_t navigationID, uint32_t opaqueSameDocumentNavigationType, const String& url, const UserData& userData)
3113 {
3114     PageClientProtector protector(m_pageClient);
3115
3116     WebFrameProxy* frame = m_process->webFrame(frameID);
3117     MESSAGE_CHECK(frame);
3118     MESSAGE_CHECK_URL(url);
3119
3120     // FIXME: We should message check that navigationID is not zero here, but it's currently zero for some navigations through the page cache.
3121     RefPtr<API::Navigation> navigation;
3122     if (frame->isMainFrame() && navigationID)
3123         navigation = &navigationState().navigation(navigationID);
3124
3125     auto transaction = m_pageLoadState.transaction();
3126
3127     bool isMainFrame = frame->isMainFrame();
3128     if (isMainFrame)
3129         m_pageLoadState.didSameDocumentNavigation(transaction, url);
3130
3131     m_pageLoadState.clearPendingAPIRequestURL(transaction);
3132     frame->didSameDocumentNavigation(url);
3133
3134     m_pageLoadState.commitChanges();
3135
3136     SameDocumentNavigationType navigationType = static_cast<SameDocumentNavigationType>(opaqueSameDocumentNavigationType);
3137     if (m_navigationClient) {
3138         if (isMainFrame)
3139             m_navigationClient->didSameDocumentNavigation(*this, navigation.get(), navigationType, m_process->transformHandlesToObjects(userData.object()).get());
3140     } else
3141         m_loaderClient->didSameDocumentNavigationForFrame(*this, *frame, navigation.get(), navigationType, m_process->transformHandlesToObjects(userData.object()).get());
3142
3143     if (isMainFrame)
3144         m_pageClient.didSameDocumentNavigationForMainFrame(navigationType);
3145 }
3146
3147 void WebPageProxy::didReceiveTitleForFrame(uint64_t frameID, const String& title, const UserData& userData)
3148 {
3149     PageClientProtector protector(m_pageClient);
3150
3151     WebFrameProxy* frame = m_process->webFrame(frameID);
3152     MESSAGE_CHECK(frame);
3153
3154     auto transaction = m_pageLoadState.transaction();
3155
3156     if (frame->isMainFrame())
3157         m_pageLoadState.setTitle(transaction, title);
3158
3159     frame->didChangeTitle(title);
3160
3161     m_pageLoadState.commitChanges();
3162     m_loaderClient->didReceiveTitleForFrame(*this, title, *frame, m_process->transformHandlesToObjects(userData.object()).get());
3163 }
3164
3165 void WebPageProxy::didFirstLayoutForFrame(uint64_t frameID, const UserData& userData)
3166 {
3167     PageClientProtector protector(m_pageClient);
3168
3169     WebFrameProxy* frame = m_process->webFrame(frameID);
3170     MESSAGE_CHECK(frame);
3171
3172     m_loaderClient->didFirstLayoutForFrame(*this, *frame, m_process->transformHandlesToObjects(userData.object()).get());
3173 }
3174
3175 void WebPageProxy::didFirstVisuallyNonEmptyLayoutForFrame(uint64_t frameID, const UserData& userData)
3176 {
3177     PageClientProtector protector(m_pageClient);
3178
3179     WebFrameProxy* frame = m_process->webFrame(frameID);
3180     MESSAGE_CHECK(frame);
3181
3182     m_loaderClient->didFirstVisuallyNonEmptyLayoutForFrame(*this, *frame, m_process->transformHandlesToObjects(userData.object()).get());
3183
3184     if (frame->isMainFrame())
3185         m_pageClient.didFirstVisuallyNonEmptyLayoutForMainFrame();
3186 }
3187
3188 void WebPageProxy::didLayoutForCustomContentProvider()
3189 {
3190     didLayout(DidFirstLayout | DidFirstVisuallyNonEmptyLayout | DidHitRelevantRepaintedObjectsAreaThreshold);
3191 }
3192
3193 void WebPageProxy::didLayout(uint32_t layoutMilestones)
3194 {
3195     PageClientProtector protector(m_pageClient);
3196
3197     if (m_navigationClient)
3198         m_navigationClient->renderingProgressDidChange(*this, static_cast<LayoutMilestones>(layoutMilestones));
3199     else
3200         m_loaderClient->didLayout(*this, static_cast<LayoutMilestones>(layoutMilestones));
3201 }
3202
3203 void WebPageProxy::didDisplayInsecureContentForFrame(uint64_t frameID, const UserData& userData)
3204 {
3205     PageClientProtector protector(m_pageClient);
3206
3207     WebFrameProxy* frame = m_process->webFrame(frameID);
3208     MESSAGE_CHECK(frame);
3209
3210     auto transaction = m_pageLoadState.transaction();
3211     m_pageLoadState.didDisplayOrRunInsecureContent(transaction);
3212
3213     m_pageLoadState.commitChanges();
3214     m_loaderClient->didDisplayInsecureContentForFrame(*this, *frame, m_process->transformHandlesToObjects(userData.object()).get());
3215 }
3216
3217 void WebPageProxy::didRunInsecureContentForFrame(uint64_t frameID, const UserData& userData)
3218 {
3219     PageClientProtector protector(m_pageClient);
3220
3221     WebFrameProxy* frame = m_process->webFrame(frameID);
3222     MESSAGE_CHECK(frame);
3223
3224     auto transaction = m_pageLoadState.transaction();
3225     m_pageLoadState.didDisplayOrRunInsecureContent(transaction);
3226
3227     m_pageLoadState.commitChanges();
3228     m_loaderClient->didRunInsecureContentForFrame(*this, *frame, m_process->transformHandlesToObjects(userData.object()).get());
3229 }
3230
3231 void WebPageProxy::didDetectXSSForFrame(uint64_t frameID, const UserData& userData)
3232 {
3233     PageClientProtector protector(m_pageClient);
3234
3235     WebFrameProxy* frame = m_process->webFrame(frameID);
3236     MESSAGE_CHECK(frame);
3237
3238     m_loaderClient->didDetectXSSForFrame(*this, *frame, m_process->transformHandlesToObjects(userData.object()).get());
3239 }
3240
3241 void WebPageProxy::frameDidBecomeFrameSet(uint64_t frameID, bool value)
3242 {
3243     PageClientProtector protector(m_pageClient);
3244
3245     WebFrameProxy* frame = m_process->webFrame(frameID);
3246     MESSAGE_CHECK(frame);
3247
3248     frame->setIsFrameSet(value);
3249     if (frame->isMainFrame())
3250         m_frameSetLargestFrame = value ? m_mainFrame : 0;
3251 }
3252
3253 void WebPageProxy::decidePolicyForNavigationAction(uint64_t frameID, const SecurityOriginData& frameSecurityOrigin, uint64_t navigationID, const NavigationActionData& navigationActionData, uint64_t originatingFrameID, const SecurityOriginData& originatingFrameSecurityOrigin, const WebCore::ResourceRequest& originalRequest, const ResourceRequest& request, uint64_t listenerID, const UserData& userData, bool& receivedPolicyAction, uint64_t& newNavigationID, uint64_t& policyAction, uint64_t& downloadID)
3254 {
3255     PageClientProtector protector(m_pageClient);
3256
3257     auto transaction = m_pageLoadState.transaction();
3258
3259     if (request.url() != m_pageLoadState.pendingAPIRequestURL())
3260         m_pageLoadState.clearPendingAPIRequestURL(transaction);
3261
3262     WebFrameProxy* frame = m_process->webFrame(frameID);
3263     MESSAGE_CHECK(frame);
3264     MESSAGE_CHECK_URL(request.url());
3265     MESSAGE_CHECK_URL(originalRequest.url());
3266
3267     WebFrameProxy* originatingFrame = m_process->webFrame(originatingFrameID);
3268
3269     Ref<WebFramePolicyListenerProxy> listener = frame->setUpPolicyListenerProxy(listenerID);
3270     if (!navigationID && frame->isMainFrame()) {
3271         auto navigation = m_navigationState->createLoadRequestNavigation(request);
3272         newNavigationID = navigation->navigationID();
3273         listener->setNavigation(WTF::move(navigation));
3274     }
3275
3276 #if ENABLE(CONTENT_FILTERING)
3277     if (frame->didHandleContentFilterUnblockNavigation(request)) {
3278         receivedPolicyAction = true;
3279         policyAction = PolicyIgnore;
3280         return;
3281     }
3282 #endif
3283
3284     ASSERT(!m_inDecidePolicyForNavigationAction);
3285
3286     m_inDecidePolicyForNavigationAction = true;
3287     m_syncNavigationActionPolicyActionIsValid = false;
3288
3289     if (m_navigationClient) {
3290         RefPtr<API::FrameInfo> destinationFrameInfo;
3291         RefPtr<API::FrameInfo> sourceFrameInfo;
3292
3293         if (frame)
3294             destinationFrameInfo = API::FrameInfo::create(*frame, frameSecurityOrigin.securityOrigin());
3295
3296         if (originatingFrame == frame)
3297             sourceFrameInfo = destinationFrameInfo;
3298         else if (originatingFrame)
3299             sourceFrameInfo = API::FrameInfo::create(*originatingFrame, originatingFrameSecurityOrigin.securityOrigin());
3300
3301         bool shouldOpenAppLinks = !m_shouldSuppressAppLinksInNextNavigationPolicyDecision && (!destinationFrameInfo || destinationFrameInfo->isMainFrame()) && !hostsAreEqual(URL(ParsedURLString, m_mainFrame->url()), request.url());
3302
3303         auto navigationAction = API::NavigationAction::create(navigationActionData, sourceFrameInfo.get(), destinationFrameInfo.get(), request, originalRequest.url(), shouldOpenAppLinks);
3304
3305         m_navigationClient->decidePolicyForNavigationAction(*this, navigationAction.get(), WTF::move(listener), m_process->transformHandlesToObjects(userData.object()).get());
3306     } else
3307         m_policyClient->decidePolicyForNavigationAction(*this, frame, navigationActionData, originatingFrame, originalRequest, request, WTF::move(listener), m_process->transformHandlesToObjects(userData.object()).get());
3308
3309     m_shouldSuppressAppLinksInNextNavigationPolicyDecision = false;
3310     m_inDecidePolicyForNavigationAction = false;
3311
3312     // Check if we received a policy decision already. If we did, we can just pass it back.
3313     receivedPolicyAction = m_syncNavigationActionPolicyActionIsValid;
3314     if (m_syncNavigationActionPolicyActionIsValid) {
3315         policyAction = m_syncNavigationActionPolicyAction;
3316         downloadID = m_syncNavigationActionPolicyDownloadID;
3317     }
3318 }
3319
3320 void WebPageProxy::decidePolicyForNewWindowAction(uint64_t frameID, const SecurityOriginData& frameSecurityOrigin, const NavigationActionData& navigationActionData, const ResourceRequest& request, const String& frameName, uint64_t listenerID, const UserData& userData)
3321 {
3322     PageClientProtector protector(m_pageClient);
3323
3324     WebFrameProxy* frame = m_process->webFrame(frameID);
3325     MESSAGE_CHECK(frame);
3326     MESSAGE_CHECK_URL(request.url());
3327
3328     Ref<WebFramePolicyListenerProxy> listener = frame->setUpPolicyListenerProxy(listenerID);
3329
3330     if (m_navigationClient) {
3331         RefPtr<API::FrameInfo> sourceFrameInfo;
3332         if (frame)
3333             sourceFrameInfo = API::FrameInfo::create(*frame, frameSecurityOrigin.securityOrigin());
3334
3335         bool shouldOpenAppLinks = !hostsAreEqual(URL(ParsedURLString, m_mainFrame->url()), request.url());
3336         auto navigationAction = API::NavigationAction::create(navigationActionData, sourceFrameInfo.get(), nullptr, request, request.url(), shouldOpenAppLinks);
3337
3338         m_navigationClient->decidePolicyForNavigationAction(*this, navigationAction.get(), WTF::move(listener), m_process->transformHandlesToObjects(userData.object()).get());
3339
3340     } else
3341         m_policyClient->decidePolicyForNewWindowAction(*this, *frame, navigationActionData, request, frameName, WTF::move(listener), m_process->transformHandlesToObjects(userData.object()).get());
3342 }
3343
3344 void WebPageProxy::decidePolicyForResponse(uint64_t frameID, const SecurityOriginData& frameSecurityOrigin, const ResourceResponse& response, const ResourceRequest& request, bool canShowMIMEType, uint64_t listenerID, const UserData& userData)
3345 {
3346     PageClientProtector protector(m_pageClient);
3347
3348     WebFrameProxy* frame = m_process->webFrame(frameID);
3349     MESSAGE_CHECK(frame);
3350     MESSAGE_CHECK_URL(request.url());
3351     MESSAGE_CHECK_URL(response.url());
3352
3353     Ref<WebFramePolicyListenerProxy> listener = frame->setUpPolicyListenerProxy(listenerID);
3354
3355     if (m_navigationClient) {
3356         auto navigationResponse = API::NavigationResponse::create(API::FrameInfo::create(*frame, frameSecurityOrigin.securityOrigin()).get(), request, response, canShowMIMEType);
3357         m_navigationClient->decidePolicyForNavigationResponse(*this, navigationResponse.get(), WTF::move(listener), m_process->transformHandlesToObjects(userData.object()).get());
3358     } else
3359         m_policyClient->decidePolicyForResponse(*this, *frame, response, request, canShowMIMEType, WTF::move(listener), m_process->transformHandlesToObjects(userData.object()).get());
3360 }
3361
3362 void WebPageProxy::decidePolicyForResponseSync(uint64_t frameID, const SecurityOriginData& frameSecurityOrigin, const ResourceResponse& response, const ResourceRequest& request, bool canShowMIMEType, uint64_t listenerID, const UserData& userData, bool& receivedPolicyAction, uint64_t& policyAction, uint64_t& downloadID)
3363 {
3364     PageClientProtector protector(m_pageClient);
3365
3366     ASSERT(!m_inDecidePolicyForResponseSync);
3367
3368     m_inDecidePolicyForResponseSync = true;
3369     m_decidePolicyForResponseRequest = &request;
3370     m_syncMimeTypePolicyActionIsValid = false;
3371
3372     decidePolicyForResponse(frameID, frameSecurityOrigin, response, request, canShowMIMEType, listenerID, userData);
3373
3374     m_inDecidePolicyForResponseSync = false;
3375     m_decidePolicyForResponseRequest = 0;
3376
3377     // Check if we received a policy decision already. If we did, we can just pass it back.
3378     receivedPolicyAction = m_syncMimeTypePolicyActionIsValid;
3379     if (m_syncMimeTypePolicyActionIsValid) {
3380         policyAction = m_syncMimeTypePolicyAction;
3381         downloadID = m_syncMimeTypePolicyDownloadID;
3382     }
3383 }
3384
3385 void WebPageProxy::unableToImplementPolicy(uint64_t frameID, const ResourceError& error, const UserData& userData)
3386 {
3387     PageClientProtector protector(m_pageClient);
3388
3389     WebFrameProxy* frame = m_process->webFrame(frameID);
3390     MESSAGE_CHECK(frame);
3391
3392     m_policyClient->unableToImplementPolicy(*this, *frame, error, m_process->transformHandlesToObjects(userData.object()).get());
3393 }
3394
3395 // FormClient
3396
3397 void WebPageProxy::willSubmitForm(uint64_t frameID, uint64_t sourceFrameID, const Vector<std::pair<String, String>>& textFieldValues, uint64_t listenerID, const UserData& userData)
3398 {
3399     WebFrameProxy* frame = m_process->webFrame(frameID);
3400     MESSAGE_CHECK(frame);
3401
3402     WebFrameProxy* sourceFrame = m_process->webFrame(sourceFrameID);
3403     MESSAGE_CHECK(sourceFrame);
3404
3405     Ref<WebFormSubmissionListenerProxy> listener = frame->setUpFormSubmissionListenerProxy(listenerID);
3406     m_formClient->willSubmitForm(*this, *frame, *sourceFrame, textFieldValues, m_process->transformHandlesToObjects(userData.object()).get(), listener.get());
3407 }
3408
3409 void WebPageProxy::didNavigateWithNavigationData(const WebNavigationDataStore& store, uint64_t frameID)
3410 {
3411     PageClientProtector protector(m_pageClient);
3412
3413     WebFrameProxy* frame = m_process->webFrame(frameID);
3414     MESSAGE_CHECK(frame);
3415     MESSAGE_CHECK(frame->page() == this);
3416
3417     if (m_historyClient) {
3418         if (frame->isMainFrame())
3419             m_historyClient->didNavigateWithNavigationData(*this, store);
3420     } else
3421         m_loaderClient->didNavigateWithNavigationData(*this, store, *frame);
3422     process().processPool().historyClient().didNavigateWithNavigationData(process().processPool(), *this, store, *frame);
3423 }
3424
3425 void WebPageProxy::didPerformClientRedirect(const String& sourceURLString, const String& destinationURLString, uint64_t frameID)
3426 {
3427     PageClientProtector protector(m_pageClient);
3428
3429     if (sourceURLString.isEmpty() || destinationURLString.isEmpty())
3430         return;
3431
3432     WebFrameProxy* frame = m_process->webFrame(frameID);
3433     MESSAGE_CHECK(frame);
3434     MESSAGE_CHECK(frame->page() == this);
3435
3436     MESSAGE_CHECK_URL(sourceURLString);
3437     MESSAGE_CHECK_URL(destinationURLString);
3438
3439     if (m_historyClient) {
3440         if (frame->isMainFrame())
3441             m_historyClient->didPerformClientRedirect(*this, sourceURLString, destinationURLString);
3442     } else
3443         m_loaderClient->didPerformClientRedirect(*this, sourceURLString, destinationURLString, *frame);
3444     process().processPool().historyClient().didPerformClientRedirect(process().processPool(), *this, sourceURLString, destinationURLString, *frame);
3445 }
3446
3447 void WebPageProxy::didPerformServerRedirect(const String& sourceURLString, const String& destinationURLString, uint64_t frameID)
3448 {
3449     PageClientProtector protector(m_pageClient);
3450
3451     if (sourceURLString.isEmpty() || destinationURLString.isEmpty())
3452         return;
3453
3454     WebFrameProxy* frame = m_process->webFrame(frameID);
3455     MESSAGE_CHECK(frame);
3456     MESSAGE_CHECK(frame->page() == this);
3457
3458     MESSAGE_CHECK_URL(sourceURLString);
3459     MESSAGE_CHECK_URL(destinationURLString);
3460
3461     if (m_historyClient) {
3462         if (frame->isMainFrame())
3463             m_historyClient->didPerformServerRedirect(*this, sourceURLString, destinationURLString);
3464     } else
3465         m_loaderClient->didPerformServerRedirect(*this, sourceURLString, destinationURLString, *frame);
3466     process().processPool().historyClient().didPerformServerRedirect(process().processPool(), *this, sourceURLString, destinationURLString, *frame);
3467 }
3468
3469 void WebPageProxy::didUpdateHistoryTitle(const String& title, const String& url, uint64_t frameID)
3470 {
3471     PageClientProtector protector(m_pageClient);
3472
3473     WebFrameProxy* frame = m_process->webFrame(frameID);
3474     MESSAGE_CHECK(frame);
3475     MESSAGE_CHECK(frame->page() == this);
3476
3477     MESSAGE_CHECK_URL(url);
3478
3479     if (m_historyClient) {
3480         if (frame->isMainFrame())
3481             m_historyClient->didUpdateHistoryTitle(*this, title, url);
3482     } else
3483         m_loaderClient->didUpdateHistoryTitle(*this, title, url, *frame);
3484     process().processPool().historyClient().didUpdateHistoryTitle(process().processPool(), *this, title, url, *frame);
3485 }
3486
3487 // UIClient
3488
3489 void WebPageProxy::createNewPage(uint64_t frameID, const SecurityOriginData& securityOriginData, const ResourceRequest& request, const WindowFeatures& windowFeatures, const NavigationActionData& navigationActionData, uint64_t& newPageID, WebPageCreationParameters& newPageParameters)
3490 {
3491     WebFrameProxy* frame = m_process->webFrame(frameID);
3492     MESSAGE_CHECK(frame);
3493
3494     auto mainFrameURL = m_mainFrame->url();
3495
3496     RefPtr<WebPageProxy> newPage = m_uiClient->createNewPage(this, frame, securityOriginData, request, windowFeatures, navigationActionData);
3497     if (!newPage) {
3498         newPageID = 0;
3499         return;
3500     }
3501
3502     newPageID = newPage->pageID();
3503     newPageParameters = newPage->creationParameters();
3504
3505     WebsiteDataStore::cloneSessionData(*this, *newPage);
3506     newPage->m_shouldSuppressAppLinksInNextNavigationPolicyDecision = hostsAreEqual(URL(ParsedURLString, mainFrameURL), request.url());
3507 }
3508
3509 void WebPageProxy::showPage()
3510 {
3511     m_uiClient->showPage(this);
3512 }
3513
3514 void WebPageProxy::fullscreenMayReturnToInline()
3515 {
3516     m_uiClient->fullscreenMayReturnToInline(this);
3517 }
3518
3519 void WebPageProxy::didEnterFullscreen()
3520 {
3521     m_uiClient->didEnterFullscreen(this);
3522 }
3523
3524 void WebPageProxy::didExitFullscreen()
3525 {
3526     m_uiClient->didExitFullscreen(this);
3527 }
3528
3529 void WebPageProxy::closePage(bool stopResponsivenessTimer)
3530 {
3531     if (stopResponsivenessTimer)
3532         m_process->responsivenessTimer().stop();
3533
3534     m_pageClient.clearAllEditCommands();
3535     m_uiClient->close(this);
3536 }
3537
3538 void WebPageProxy::runJavaScriptAlert(uint64_t frameID, const SecurityOriginData& securityOrigin, const String& message, RefPtr<Messages::WebPageProxy::RunJavaScriptAlert::DelayedReply> reply)
3539 {
3540     WebFrameProxy* frame = m_process->webFrame(frameID);
3541     MESSAGE_CHECK(frame);
3542
3543     // Since runJavaScriptAlert() can spin a nested run loop we need to turn off the responsiveness timer.
3544     m_process->responsivenessTimer().stop();
3545
3546     m_uiClient->runJavaScriptAlert(this, message, frame, securityOrigin, [reply]{ reply->send(); });
3547 }
3548
3549 void WebPageProxy::runJavaScriptConfirm(uint64_t frameID, const SecurityOriginData& securityOrigin, const String& message, RefPtr<Messages::WebPageProxy::RunJavaScriptConfirm::DelayedReply> reply)
3550 {
3551     WebFrameProxy* frame = m_process->webFrame(frameID);
3552     MESSAGE_CHECK(frame);
3553
3554     // Since runJavaScriptConfirm() can spin a nested run loop we need to turn off the responsiveness timer.
3555     m_process->responsivenessTimer().stop();
3556
3557     m_uiClient->runJavaScriptConfirm(this, message, frame, securityOrigin, [reply](bool result) { reply->send(result); });
3558 }
3559
3560 void WebPageProxy::runJavaScriptPrompt(uint64_t frameID, const SecurityOriginData& securityOrigin, const String& message, const String& defaultValue, RefPtr<Messages::WebPageProxy::RunJavaScriptPrompt::DelayedReply> reply)
3561 {
3562     WebFrameProxy* frame = m_process->webFrame(frameID);
3563     MESSAGE_CHECK(frame);
3564
3565     // Since runJavaScriptPrompt() can spin a nested run loop we need to turn off the responsiveness timer.
3566     m_process->responsivenessTimer().stop();
3567
3568     m_uiClient->runJavaScriptPrompt(this, message, defaultValue, frame, securityOrigin, [reply](const String& result) { reply->send(result); });
3569 }
3570
3571 void WebPageProxy::setStatusText(const String& text)
3572 {
3573     m_uiClient->setStatusText(this, text);
3574 }
3575
3576 void WebPageProxy::mouseDidMoveOverElement(const WebHitTestResultData& hitTestResultData, uint32_t opaqueModifiers, const UserData& userData)
3577 {
3578     m_lastMouseMoveHitTestResult = API::HitTestResult::create(hitTestResultData);
3579
3580     WebEvent::Modifiers modifiers = static_cast<WebEvent::Modifiers>(opaqueModifiers);
3581
3582     m_uiClient->mouseDidMoveOverElement(this, hitTestResultData, modifiers, m_process->transformHandlesToObjects(userData.object()).get());
3583 }
3584
3585 void WebPageProxy::connectionWillOpen(IPC::Connection& connection)
3586 {
3587     ASSERT(&connection == m_process->connection());
3588
3589     m_webProcessLifetimeTracker.connectionWillOpen(connection);
3590 }
3591
3592 void WebPageProxy::webProcessWillShutDown()
3593 {
3594     m_webProcessLifetimeTracker.webProcessWillShutDown();
3595 }
3596
3597 void WebPageProxy::processDidFinishLaunching()
3598 {
3599     ASSERT(m_process->state() == WebProcessProxy::State::Running);
3600
3601     if (m_userContentController)
3602         m_process->addWebUserContentControllerProxy(*m_userContentController);
3603     m_process->addVisitedLinkStore(m_visitedLinkStore);
3604 }
3605
3606 #if ENABLE(NETSCAPE_PLUGIN_API)
3607 void WebPageProxy::unavailablePluginButtonClicked(uint32_t opaquePluginUnavailabilityReason, const String& mimeType, const String& pluginURLString, const String& pluginspageAttributeURLString, const String& frameURLString, const String& pageURLString)
3608 {
3609     MESSAGE_CHECK_URL(pluginURLString);
3610     MESSAGE_CHECK_URL(pluginspageAttributeURLString);
3611     MESSAGE_CHECK_URL(frameURLString);
3612     MESSAGE_CHECK_URL(pageURLString);
3613
3614     RefPtr<API::Dictionary> pluginInformation;
3615     String newMimeType = mimeType;
3616     PluginModuleInfo plugin = m_process->processPool().pluginInfoStore().findPlugin(newMimeType, URL(URL(), pluginURLString));
3617     pluginInformation = createPluginInformationDictionary(plugin, frameURLString, mimeType, pageURLString, pluginspageAttributeURLString, pluginURLString);
3618
3619     WKPluginUnavailabilityReason pluginUnavailabilityReason = kWKPluginUnavailabilityReasonPluginMissing;
3620     switch (static_cast<RenderEmbeddedObject::PluginUnavailabilityReason>(opaquePluginUnavailabilityReason)) {
3621     case RenderEmbeddedObject::PluginMissing:
3622         pluginUnavailabilityReason = kWKPluginUnavailabilityReasonPluginMissing;
3623         break;
3624     case RenderEmbeddedObject::InsecurePluginVersion:
3625         pluginUnavailabilityReason = kWKPluginUnavailabilityReasonInsecurePluginVersion;
3626         break;
3627     case RenderEmbeddedObject::PluginCrashed:
3628         pluginUnavailabilityReason = kWKPluginUnavailabilityReasonPluginCrashed;
3629         break;
3630     case RenderEmbeddedObject::PluginBlockedByContentSecurityPolicy:
3631         ASSERT_NOT_REACHED();
3632     }
3633
3634     m_uiClient->unavailablePluginButtonClicked(this, pluginUnavailabilityReason, pluginInformation.get());
3635 }
3636 #endif // ENABLE(NETSCAPE_PLUGIN_API)
3637
3638 #if ENABLE(WEBGL)
3639 void WebPageProxy::webGLPolicyForURL(const String& url, uint32_t& loadPolicy)
3640 {
3641     loadPolicy = static_cast<uint32_t>(m_loaderClient->webGLLoadPolicy(*this, url));
3642 }
3643
3644 void WebPageProxy::resolveWebGLPolicyForURL(const String& url, uint32_t& loadPolicy)
3645 {
3646     loadPolicy = static_cast<uint32_t>(m_loaderClient->resolveWebGLLoadPolicy(*this, url));
3647 }
3648 #endif // ENABLE(WEBGL)
3649
3650 void WebPageProxy::setToolbarsAreVisible(bool toolbarsAreVisible)
3651 {
3652     m_uiClient->setToolbarsAreVisible(this, toolbarsAreVisible);
3653 }
3654
3655 void WebPageProxy::getToolbarsAreVisible(bool& toolbarsAreVisible)
3656 {
3657     toolbarsAreVisible = m_uiClient->toolbarsAreVisible(this);
3658 }
3659
3660 void WebPageProxy::setMenuBarIsVisible(bool menuBarIsVisible)
3661 {
3662     m_uiClient->setMenuBarIsVisible(this, menuBarIsVisible);
3663 }
3664
3665 void WebPageProxy::getMenuBarIsVisible(bool& menuBarIsVisible)
3666 {
3667     menuBarIsVisible = m_uiClient->menuBarIsVisible(this);
3668 }
3669
3670 void WebPageProxy::setStatusBarIsVisible(bool statusBarIsVisible)
3671 {
3672     m_uiClient->setStatusBarIsVisible(this, statusBarIsVisible);
3673 }
3674
3675 void WebPageProxy::getStatusBarIsVisible(bool& statusBarIsVisible)
3676 {
3677     statusBarIsVisible = m_uiClient->statusBarIsVisible(this);
3678 }
3679
3680 void WebPageProxy::setIsResizable(bool isResizable)
3681 {
3682     m_uiClient->setIsResizable(this, isResizable);
3683 }
3684
3685 void WebPageProxy::getIsResizable(bool& isResizable)
3686 {
3687     isResizable = m_uiClient->isResizable(this);
3688 }
3689
3690 void WebPageProxy::setWindowFrame(const FloatRect& newWindowFrame)
3691 {
3692     m_uiClient->setWindowFrame(this, m_pageClient.convertToDeviceSpace(newWindowFrame));
3693 }
3694
3695 void WebPageProxy::getWindowFrame(FloatRect& newWindowFrame)
3696 {
3697     newWindowFrame = m_pageClient.convertToUserSpace(m_uiClient->windowFrame(this));
3698 }
3699
3700 void WebPageProxy::screenToRootView(const IntPoint& screenPoint, IntPoint& windowPoint)
3701 {
3702     windowPoint = m_pageClient.screenToRootView(screenPoint);
3703 }
3704
3705 void WebPageProxy::rootViewToScreen(const IntRect& viewRect, IntRect& result)
3706 {
3707     result = m_pageClient.rootViewToScreen(viewRect);
3708 }
3709
3710 #if PLATFORM(IOS)
3711 void WebPageProxy::accessibilityScreenToRootView(const IntPoint& screenPoint, IntPoint& windowPoint)
3712 {
3713     windowPoint = m_pageClient.accessibilityScreenToRootView(screenPoint);
3714 }
3715
3716 void WebPageProxy::rootViewToAccessibilityScreen(const IntRect& viewRect, IntRect& result)
3717 {
3718     result = m_pageClient.rootViewToAccessibilityScreen(viewRect);
3719 }
3720 #endif
3721
3722 void WebPageProxy::runBeforeUnloadConfirmPanel(const String& message, uint64_t frameID, bool& shouldClose)
3723 {
3724     WebFrameProxy* frame = m_process->webFrame(frameID);
3725     MESSAGE_CHECK(frame);
3726
3727     // Since runBeforeUnloadConfirmPanel() can spin a nested run loop we need to turn off the responsiveness timer.
3728     m_process->responsivenessTimer().stop();
3729
3730     shouldClose = m_uiClient->runBeforeUnloadConfirmPanel(this, message, frame);
3731 }
3732
3733 #if USE(COORDINATED_GRAPHICS_MULTIPROCESS)
3734 void WebPageProxy::pageDidRequestScroll(const IntPoint& point)
3735 {
3736     m_pageClient.pageDidRequestScroll(point);
3737 }
3738
3739 void WebPageProxy::pageTransitionViewportReady()
3740 {
3741     m_pageClient.pageTransitionViewportReady();
3742 }
3743
3744 void WebPageProxy::didRenderFrame(const WebCore::IntSize& contentsSize, const WebCore::IntRect& coveredRect)
3745 {
3746     m_pageClient.didRenderFrame(contentsSize, coveredRect);
3747 }
3748
3749 void WebPageProxy::commitPageTransitionViewport()
3750 {
3751     if (!isValid())
3752         return;
3753
3754     process().send(Messages::WebPage::CommitPageTransitionViewport(), m_pageID);
3755 }
3756 #endif
3757
3758 void WebPageProxy::didChangeViewportProperties(const ViewportAttributes& attr)
3759 {
3760     m_pageClient.didChangeViewportProperties(attr);
3761 }
3762
3763 void WebPageProxy::pageDidScroll()
3764 {
3765     m_uiClient->pageDidScroll(this);
3766 }
3767
3768 void WebPageProxy::runOpenPanel(uint64_t frameID, const FileChooserSettings& settings)
3769 {
3770     if (m_openPanelResultListener) {
3771         m_openPanelResultListener->invalidate();
3772         m_openPanelResultListener = nullptr;
3773     }
3774
3775     WebFrameProxy* frame = m_process->webFrame(frameID);
3776     MESSAGE_CHECK(frame);
3777
3778     RefPtr<WebOpenPanelParameters> parameters = WebOpenPanelParameters::create(settings);
3779     m_openPanelResultListener = WebOpenPanelResultListenerProxy::create(this);
3780
3781     // Since runOpenPanel() can spin a nested run loop we need to turn off the responsiveness timer.
3782     m_process->responsivenessTimer().stop();
3783
3784     if (!m_uiClient->runOpenPanel(this, frame, parameters.get(), m_openPanelResultListener.get())) {
3785         if (!m_pageClient.handleRunOpenPanel(this, frame, parameters.get(), m_openPanelResultListener.get()))
3786             didCancelForOpenPanel();
3787     }
3788 }
3789
3790 void WebPageProxy::printFrame(uint64_t frameID)
3791 {
3792     ASSERT(!m_isPerformingDOMPrintOperation);
3793     m_isPerformingDOMPrintOperation = true;
3794
3795     WebFrameProxy* frame = m_process->webFrame(frameID);
3796     MESSAGE_CHECK(frame);
3797
3798     m_uiClient->printFrame(this, frame);
3799
3800     endPrinting(); // Send a message synchronously while m_isPerformingDOMPrintOperation is still true.
3801     m_isPerformingDOMPrintOperation = false;
3802 }
3803
3804 void WebPageProxy::printMainFrame()
3805 {
3806     printFrame(m_mainFrame->frameID());
3807 }
3808
3809 void WebPageProxy::setMediaVolume(float volume)
3810 {
3811     if (volume == m_mediaVolume)
3812         return;
3813
3814     m_mediaVolume = volume;
3815
3816     if (!isValid())
3817         return;
3818
3819     m_process->send(Messages::WebPage::SetMediaVolume(volume), m_pageID);
3820 }
3821
3822 void WebPageProxy::setMuted(bool muted)
3823 {
3824     if (m_muted == muted)
3825         return;
3826
3827     m_muted = muted;
3828
3829     if (!isValid())
3830         return;
3831
3832     m_process->send(Messages::WebPage::SetMuted(muted), m_pageID);
3833 }
3834
3835 #if ENABLE(MEDIA_SESSION)
3836 void WebPageProxy::handleMediaEvent(MediaEventType eventType)
3837 {
3838     if (!isValid())
3839         return;
3840
3841     m_process->send(Messages::WebPage::HandleMediaEvent(eventType), m_pageID);
3842 }
3843
3844 void WebPageProxy::setVolumeOfMediaElement(double volume, uint64_t elementID)
3845 {
3846     if (!isValid())
3847         return;
3848
3849     m_process->send(Messages::WebPage::SetVolumeOfMediaElement(volume, elementID), m_pageID);
3850 }
3851 #endif
3852
3853 void WebPageProxy::setMayStartMediaWhenInWindow(bool mayStartMedia)
3854 {
3855     if (mayStartMedia == m_mayStartMediaWhenInWindow)
3856         return;
3857
3858     m_mayStartMediaWhenInWindow = mayStartMedia;
3859
3860     if (!isValid())
3861         return;
3862
3863     process().send(Messages::WebPage::SetMayStartMediaWhenInWindow(mayStartMedia), m_pageID);
3864 }
3865
3866 void WebPageProxy::handleDownloadRequest(DownloadProxy* download)
3867 {
3868     m_pageClient.handleDownloadRequest(download);
3869 }
3870
3871 void WebPageProxy::didChangeContentSize(const IntSize& size)
3872 {
3873     m_pageClient.didChangeContentSize(size);
3874 }
3875
3876 #if ENABLE(INPUT_TYPE_COLOR)
3877 void WebPageProxy::showColorPicker(const WebCore::Color& initialColor, const IntRect& elementRect)
3878 {
3879 #if ENABLE(INPUT_TYPE_COLOR_POPOVER)
3880     // A new popover color well needs to be created (and the previous one destroyed) for
3881     // each activation of a color element.
3882     m_colorPicker = nullptr;
3883 #endif
3884     if (!m_colorPicker)
3885         m_colorPicker = m_pageClient.createColorPicker(this, initialColor, elementRect);
3886     m_colorPicker->showColorPicker(initialColor);
3887 }
3888
3889 void WebPageProxy::setColorPickerColor(const WebCore::Color& color)
3890 {
3891     ASSERT(m_colorPicker);
3892
3893     m_colorPicker->setSelectedColor(color);
3894 }
3895
3896 void WebPageProxy::endColorPicker()
3897 {
3898     ASSERT(m_colorPicker);
3899
3900     m_colorPicker->endPicker();
3901 }
3902
3903 void WebPageProxy::didChooseColor(const WebCore::Color& color)
3904 {
3905     if (!isValid())
3906         return;
3907
3908     m_process->send(Messages::WebPage::DidChooseColor(color), m_pageID);
3909 }
3910
3911 void WebPageProxy::didEndColorPicker()
3912 {
3913     if (!isValid())
3914         return;
3915
3916 #if ENABLE(INPUT_TYPE_COLOR)
3917     if (m_colorPicker) {
3918         m_colorPicker->invalidate();
3919         m_colorPicker = nullptr;
3920     }
3921 #endif
3922
3923     m_process->send(Messages::WebPage::DidEndColorPicker(), m_pageID);
3924 }
3925 #endif
3926
3927 // Inspector
3928 WebInspectorProxy* WebPageProxy::inspector()
3929 {
3930     if (isClosed() || !isValid())
3931         return 0;
3932     return m_inspector.get();
3933 }
3934
3935 #if ENABLE(FULLSCREEN_API)
3936 WebFullScreenManagerProxy* WebPageProxy::fullScreenManager()
3937 {
3938     return m_fullScreenManager.get();
3939 }
3940 #endif
3941
3942 #if PLATFORM(IOS)
3943 RefPtr<WebVideoFullscreenManagerProxy> WebPageProxy::videoFullscreenManager()
3944 {
3945     return m_videoFullscreenManager;
3946 }
3947
3948 bool WebPageProxy::allowsMediaDocumentInlinePlayback() const
3949 {
3950     return m_allowsMediaDocumentInlinePlayback;
3951 }
3952
3953 void WebPageProxy::setAllowsMediaDocumentInlinePlayback(bool allows)
3954 {
3955     if (m_allowsMediaDocumentInlinePlayback == allows)
3956         return;
3957     m_allowsMediaDocumentInlinePlayback = allows;
3958
3959     m_process->send(Messages::WebPage::SetAllowsMediaDocumentInlinePlayback(allows), m_pageID);
3960 }
3961 #endif
3962
3963 // BackForwardList
3964
3965 void WebPageProxy::backForwardAddItem(uint64_t itemID)
3966 {
3967     m_backForwardList->addItem(m_process->webBackForwardItem(itemID));
3968 }
3969
3970 void WebPageProxy::backForwardGoToItem(uint64_t itemID, SandboxExtension::Handle& sandboxExtensionHandle)
3971 {
3972     WebBackForwardListItem* item = m_process->webBackForwardItem(itemID);
3973     if (!item)
3974         return;
3975
3976     bool createdExtension = maybeInitializeSandboxExtensionHandle(URL(URL(), item->url()), sandboxExtensionHandle);
3977     if (createdExtension)
3978         m_process->willAcquireUniversalFileReadSandboxExtension();
3979     m_backForwardList->goToItem(item);
3980 }
3981
3982 void WebPageProxy::backForwardItemAtIndex(int32_t index, uint64_t& itemID)
3983 {
3984     WebBackForwardListItem* item = m_backForwardList->itemAtIndex(index);
3985     itemID = item ? item->itemID() : 0;
3986 }
3987
3988 void WebPageProxy::backForwardBackListCount(int32_t& count)
3989 {
3990     count = m_backForwardList->backListCount();
3991 }
3992
3993 void WebPageProxy::backForwardForwardListCount(int32_t& count)
3994 {
3995     count = m_backForwardList->forwardListCount();
3996 }
3997
3998 void WebPageProxy::compositionWasCanceled(const EditorState& editorState)
3999 {
4000 #if PLATFORM(COCOA)
4001     m_pageClient.notifyInputContextAboutDiscardedComposition();
4002 #endif
4003     editorStateChanged(editorState);
4004 }
4005
4006 // Undo management
4007
4008 void WebPageProxy::registerEditCommandForUndo(uint64_t commandID, uint32_t editAction)
4009 {
4010     registerEditCommand(WebEditCommandProxy::create(commandID, static_cast<EditAction>(editAction), this), Undo);
4011 }
4012
4013 void WebPageProxy::registerInsertionUndoGrouping()
4014 {
4015 #if USE(INSERTION_UNDO_GROUPING)
4016     m_pageClient.registerInsertionUndoGrouping();
4017 #endif
4018 }
4019
4020 void WebPageProxy::canUndoRedo(uint32_t action, bool& result)
4021 {
4022     result = m_pageClient.canUndoRedo(static_cast<UndoOrRedo>(action));
4023 }
4024
4025 void WebPageProxy::executeUndoRedo(uint32_t action, bool& result)
4026 {
4027     m_pageClient.executeUndoRedo(static_cast<UndoOrRedo>(action));
4028     result = true;
4029 }
4030
4031 void WebPageProxy::clearAllEditCommands()
4032 {
4033     m_pageClient.clearAllEditCommands();
4034 }
4035
4036 void WebPageProxy::didCountStringMatches(const String& string, uint32_t matchCount)
4037 {
4038     m_findClient->didCountStringMatches(this, string, matchCount);
4039 }
4040
4041 void WebPageProxy::didGetImageForFindMatch(const ShareableBitmap::Handle& contentImageHandle, uint32_t matchIndex)
4042 {
4043     m_findMatchesClient->didGetImageForMatchResult(this, WebImage::create(ShareableBitmap::create(contentImageHandle)).get(), matchIndex);
4044 }
4045
4046 void WebPageProxy::setTextIndicator(const TextIndicatorData& indicatorData, uint64_t lifetime)
4047 {
4048     // FIXME: Make TextIndicatorWindow a platform-independent presentational thing ("TextIndicatorPresentation"?).
4049 #if PLATFORM(COCOA)
4050     m_pageClient.setTextIndicator(TextIndicator::create(indicatorData), static_cast<TextIndicatorWindowLifetime>(lifetime));
4051 #else
4052     ASSERT_NOT_REACHED();
4053 #endif
4054 }
4055
4056 void WebPageProxy::clearTextIndicator()
4057 {
4058 #if PLATFORM(COCOA)
4059     m_pageClient.clearTextIndicator(TextIndicatorWindowDismissalAnimation::FadeOut);
4060 #else
4061     ASSERT_NOT_REACHED();
4062 #endif
4063 }
4064
4065 void WebPageProxy::setTextIndicatorAnimationProgress(float progress)
4066 {
4067 #if PLATFORM(COCOA)
4068     m_pageClient.setTextIndicatorAnimationProgress(progress);
4069 #else
4070     ASSERT_NOT_REACHED();
4071 #endif
4072 }
4073
4074 void WebPageProxy::didFindString(const String& string, const Vector<WebCore::IntRect>& matchRects, uint32_t matchCount, int32_t matchIndex)
4075 {
4076     m_findClient->didFindString(this, string, matchRects, matchCount, matchIndex);
4077 }
4078
4079 void WebPageProxy::didFindStringMatches(const String& string, const Vector<Vector<WebCore::IntRect>>& matchRects, int32_t firstIndexAfterSelection)
4080 {
4081     m_findMatchesClient->didFindStringMatches(this, string, matchRects, firstIndexAfterSelection);
4082 }
4083
4084 void WebPageProxy::didFailToFindString(const String& string)
4085 {
4086     m_findClient->didFailToFindString(this, string);
4087 }
4088
4089 bool WebPageProxy::sendMessage(std::unique_ptr<IPC::MessageEncoder> encoder, unsigned messageSendFlags)
4090 {
4091     return m_process->sendMessage(WTF::move(encoder), messageSendFlags);
4092 }
4093
4094 IPC::Connection* WebPageProxy::messageSenderConnection()
4095 {
4096     return m_process->connection();
4097 }
4098
4099 uint64_t WebPageProxy::messageSenderDestinationID()
4100 {
4101     return m_pageID;
4102 }
4103
4104 void WebPageProxy::valueChangedForPopupMenu(WebPopupMenuProxy*, int32_t newSelectedIndex)
4105 {
4106     m_process->send(Messages::WebPage::DidChangeSelectedIndexForActivePopupMenu(newSelectedIndex), m_pageID);
4107 }
4108
4109 void WebPageProxy::setTextFromItemForPopupMenu(WebPopupMenuProxy*, int32_t index)
4110 {
4111     m_process->send(Messages::WebPage::SetTextForActivePopupMenu(index), m_pageID);
4112 }
4113
4114 NativeWebMouseEvent* WebPageProxy::currentlyProcessedMouseDownEvent()
4115 {
4116     return m_currentlyProcessedMouseDownEvent.get();
4117 }
4118
4119 void WebPageProxy::postMessageToInjectedBundle(const String& messageName, API::Object* messageBody)
4120 {
4121     process().send(Messages::WebPage::PostInjectedBundleMessage(messageName, UserData(process().transformObjectsToHandles(messageBody).get())), m_pageID);
4122 }
4123
4124 #if PLATFORM(GTK)
4125 void WebPageProxy::failedToShowPopupMenu()
4126 {
4127     m_process->send(Messages::WebPage::FailedToShowPopupMenu(), m_pageID);
4128 }
4129 #endif
4130
4131 void WebPageProxy::showPopupMenu(const IntRect& rect, uint64_t textDirection, const Vector<WebPopupItem>& items, int32_t selectedIndex, const PlatformPopupMenuData& data)
4132 {
4133     if (m_activePopupMenu) {
4134 #if PLATFORM(EFL)
4135         m_uiPopupMenuClient.hidePopupMenu(this);
4136 #else
4137         m_activePopupMenu->hidePopupMenu();
4138 #endif
4139         m_activePopupMenu->invalidate();
4140         m_activePopupMenu = nullptr;
4141     }
4142
4143     m_activePopupMenu = m_pageClient.createPopupMenuProxy(*this);
4144
4145     if (!m_activePopupMenu)
4146         return;
4147
4148     // Since showPopupMenu() can spin a nested run loop we need to turn off the responsiveness timer.
4149     m_process->responsivenessTimer().stop();
4150
4151 #if PLATFORM(EFL)
4152     UNUSED_PARAM(data);
4153     m_uiPopupMenuClient.showPopupMenu(this, m_activePopupMenu.get(), rect, static_cast<TextDirection>(textDirection), m_pageScaleFactor, items, selectedIndex);
4154 #else
4155
4156     // Showing a popup menu runs a nested runloop, which can handle messages that cause |this| to get closed.
4157     Ref<WebPageProxy> protect(*this);
4158     m_activePopupMenu->showPopupMenu(rect, static_cast<TextDirection>(textDirection), m_pageScaleFactor, items, data, selectedIndex);
4159 #endif
4160 }
4161
4162 void WebPageProxy::hidePopupMenu()
4163 {
4164     if (!m_activePopupMenu)
4165         return;
4166
4167 #if PLATFORM(EFL)
4168     m_uiPopupMenuClient.hidePopupMenu(this);
4169 #else
4170     m_activePopupMenu->hidePopupMenu();
4171 #endif
4172     m_activePopupMenu->invalidate();
4173     m_activePopupMenu = nullptr;
4174 }
4175
4176 #if ENABLE(CONTEXT_MENUS)
4177 void WebPageProxy::showContextMenu(const ContextMenuContextData& contextMenuContextData, const UserData& userData)
4178 {
4179     // Showing a context menu runs a nested runloop, which can handle messages that cause |this| to get closed.
4180     Ref<WebPageProxy> protect(*this);
4181
4182     internalShowContextMenu(contextMenuContextData, userData);
4183
4184     // No matter the result of internalShowContextMenu, always notify the WebProcess that the menu is hidden so it starts handling mouse events again.
4185     m_process->send(Messages::WebPage::ContextMenuHidden(), m_pageID);
4186 }
4187
4188 void WebPageProxy::internalShowContextMenu(const ContextMenuContextData& contextMenuContextData, const UserData& userData)
4189 {
4190     m_activeContextMenuContextData = contextMenuContextData;
4191
4192     m_activeContextMenu = m_pageClient.createContextMenuProxy(*this, contextMenuContextData, userData);
4193     if (!m_activeContextMenu)
4194         return;
4195
4196     // Since showContextMenu() can spin a nested run loop we need to turn off the responsiveness timer.
4197     m_process->responsivenessTimer().stop();
4198
4199     m_activeContextMenu->show();
4200 }
4201
4202 void WebPageProxy::contextMenuItemSelected(const WebContextMenuItemData& item)
4203 {
4204     // Application custom items don't need to round-trip through to WebCore in the WebProcess.
4205     if (item.action() >= ContextMenuItemBaseApplicationTag) {
4206         m_contextMenuClient->customContextMenuItemSelected(*this, item);
4207         return;
4208     }
4209
4210 #if PLATFORM(COCOA)
4211     if (item.action() == ContextMenuItemTagSmartCopyPaste) {
4212         setSmartInsertDeleteEnabled(!isSmartInsertDeleteEnabled());
4213         return;
4214     }
4215     if (item.action() == ContextMenuItemTagSmartQuotes) {
4216         TextChecker::setAutomaticQuoteSubstitutionEnabled(!TextChecker::state().isAutomaticQuoteSubstitutionEnabled);
4217         m_process->updateTextCheckerState();
4218         return;
4219     }
4220     if (item.action() == ContextMenuItemTagSmartDashes) {
4221         TextChecker::setAutomaticDashSubstitutionEnabled(!TextChecker::state().isAutomaticDashSubstitutionEnabled);
4222         m_process->updateTextCheckerState();
4223         return;
4224     }
4225     if (item.action() == ContextMenuItemTagSmartLinks) {
4226         TextChecker::setAutomaticLinkDetectionEnabled(!TextChecker::state().isAutomaticLinkDetectionEnabled);
4227         m_process->updateTextCheckerState();
4228         return;
4229     }
4230     if (item.action() == ContextMenuItemTagTextReplacement) {
4231         TextChecker::setAutomaticTextReplacementEnabled(!TextChecker::state().isAutomaticTextReplacementEnabled);
4232         m_process->updateTextCheckerState();
4233         return;
4234     }
4235     if (item.action() == ContextMenuItemTagCorrectSpellingAutomatically) {
4236         TextChecker::setAutomaticSpellingCorrectionEnabled(!TextChecker::state().isAutomaticSpellingCorrectionEnabled);
4237         m_process->updateTextCheckerState();
4238         return;
4239     }
4240     if (item.action() == ContextMenuItemTagShowSubstitutions) {
4241         TextChecker::toggleSubstitutionsPanelIsShowing();
4242         return;
4243     }
4244 #endif
4245     if (item.action() == ContextMenuItemTagDownloadImageToDisk) {
4246         m_process->processPool().download(this, URL(URL(), m_activeContextMenuContextData.webHitTestResultData().absoluteImageURL));
4247         return;
4248     }
4249     if (item.action() == ContextMenuItemTagDownloadLinkToDisk) {
4250         m_process->processPool().download(this, URL(URL(), m_activeContextMenuContextData.webHitTestResultData().absoluteLinkURL));
4251         return;
4252     }
4253     if (item.action() == ContextMenuItemTagDownloadMediaToDisk) {
4254         m_process->processPool().download(this, URL(URL(), m_activeContextMenuContextData.webHitTestResultData().absoluteMediaURL));
4255         return;
4256     }
4257     if (item.action() == ContextMenuItemTagCheckSpellingWhileTyping) {
4258         TextChecker::setContinuousSpellCheckingEnabled(!TextChecker::state().isContinuousSpellCheckingEnabled);
4259         m_process->updateTextCheckerState();
4260         return;
4261     }
4262     if (item.action() == ContextMenuItemTagCheckGrammarWithSpelling) {
4263         TextChecker::setGrammarCheckingEnabled(!TextChecker::state().isGrammarCheckingEnabled);
4264         m_process->updateTextCheckerState();