Source/WebKit2/UIProcess/WebPageProxy.h

   1 /*
   2  * Copyright (C) 2010, 2011, 2014-2015 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  23  * THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef WebPageProxy_h
  27 #define WebPageProxy_h
  28
  29 #include "APIObject.h"
  30 #include "APISession.h"
  31 #include "AssistedNodeInformation.h"
  32 #include "AutoCorrectionCallback.h"
  33 #include "Connection.h"
  34 #include "ContextMenuContextData.h"
  35 #include "DragControllerAction.h"
  36 #include "DrawingAreaProxy.h"
  37 #include "EditingRange.h"
  38 #include "EditorState.h"
  39 #include "GeolocationPermissionRequestManagerProxy.h"
  40 #include "InteractionInformationAtPosition.h"
  41 #include "LayerTreeContext.h"
  42 #include "MessageSender.h"
  43 #include "NotificationPermissionRequestManagerProxy.h"
  44 #include "PageLoadState.h"
  45 #include "PlatformProcessIdentifier.h"
  46 #include "ProcessThrottler.h"
  47 #include "SandboxExtension.h"
  48 #include "ShareableBitmap.h"
  49 #include "UserMediaPermissionRequestManagerProxy.h"
  50 #include "VisibleContentRectUpdateInfo.h"
  51 #include "WKBase.h"
  52 #include "WKPagePrivate.h"
  53 #include "WebColorPicker.h"
  54 #include "WebContextMenuItemData.h"
  55 #include "WebCoreArgumentCoders.h"
  56 #include "WebFrameProxy.h"
  57 #include "WebPageCreationParameters.h"
  58 #include "WebPageDiagnosticLoggingClient.h"
  59 #include "WebPageInjectedBundleClient.h"
  60 #include "WebPreferences.h"
  61 #include <WebCore/AlternativeTextClient.h> // FIXME: Needed by WebPageProxyMessages.h for DICTATION_ALTERNATIVES.
  62 #include "WebPageProxyMessages.h"
  63 #include "WebPopupMenuProxy.h"
  64 #include "WebProcessLifetimeTracker.h"
  65 #include <WebCore/Color.h>
  66 #include <WebCore/DragActions.h>
  67 #include <WebCore/FrameLoaderTypes.h>
  68 #include <WebCore/HitTestResult.h>
  69 #include <WebCore/MediaProducer.h>
  70 #include <WebCore/Page.h>
  71 #include <WebCore/PlatformScreen.h>
  72 #include <WebCore/ScrollTypes.h>
  73 #include <WebCore/SearchPopupMenu.h>
  74 #include <WebCore/TextChecking.h>
  75 #include <WebCore/TextGranularity.h>
  76 #include <WebCore/ViewState.h>
  77 #include <WebCore/VisibleSelection.h>
  78 #include <memory>
  79 #include <wtf/HashMap.h>
  80 #include <wtf/HashSet.h>
  81 #include <wtf/PassRefPtr.h>
  82 #include <wtf/Ref.h>
  83 #include <wtf/RefPtr.h>
  84 #include <wtf/Vector.h>
  85 #include <wtf/text/WTFString.h>
  86
  87 OBJC_CLASS NSView;
  88 OBJC_CLASS _WKRemoteObjectRegistry;
  89
  90 #if ENABLE(DRAG_SUPPORT)
  91 #include <WebCore/DragActions.h>
  92 #endif
  93
  94 #if ENABLE(TOUCH_EVENTS)
  95 #include "NativeWebTouchEvent.h"
  96 #endif
  97
  98 #if PLATFORM(EFL)
  99 #include "WKPageEfl.h"
 100 #include "WebUIPopupMenuClient.h"
 101 #include <Evas.h>
 102 #endif
 103
 104 #if PLATFORM(COCOA)
 105 #include "LayerRepresentation.h"
 106 #endif
 107
 108 #if PLATFORM(MAC)
 109 #include "AttributedString.h"
 110 #endif
 111
 112 #if PLATFORM(IOS)
 113 #include "ProcessThrottler.h"
 114 #endif
 115
 116 #if PLATFORM(GTK)
 117 #include "ArgumentCodersGtk.h"
 118 #endif
 119
 120 #if ENABLE(WIRELESS_PLAYBACK_TARGET) && !PLATFORM(IOS)
 121 #include <WebCore/MediaPlaybackTargetPicker.h>
 122 #include <WebCore/WebMediaSessionManagerClient.h>
 123 #endif
 124
 125 #if ENABLE(MEDIA_SESSION)
 126 namespace WebCore {
 127 class MediaSessionMetadata;
 128 }
 129 #endif
 130
 131 namespace API {
 132 class ContextMenuClient;
 133 class FindClient;
 134 class FindMatchesClient;
 135 class FormClient;
 136 class HistoryClient;
 137 class LoaderClient;
 138 class Navigation;
 139 class NavigationClient;
 140 class PolicyClient;
 141 class UIClient;
 142 class URLRequest;
 143 }
 144
 145 namespace IPC {
 146 class ArgumentDecoder;
 147 class Connection;
 148 }
 149
 150 namespace WebCore {
 151 class AuthenticationChallenge;
 152 class Cursor;
 153 class DragData;
 154 class FloatRect;
 155 class GraphicsLayer;
 156 class IntSize;
 157 class MediaConstraintsImpl;
 158 class ProtectionSpace;
 159 class RunLoopObserver;
 160 class SharedBuffer;
 161 class TextIndicator;
 162 struct DictionaryPopupInfo;
 163 struct ExceptionDetails;
 164 struct FileChooserSettings;
 165 struct SecurityOriginData;
 166 struct TextAlternativeWithRange;
 167 struct TextCheckingResult;
 168 struct ViewportAttributes;
 169 struct WindowFeatures;
 170 }
 171
 172 #if PLATFORM(GTK)
 173 typedef GtkWidget* PlatformWidget;
 174 #endif
 175
 176 namespace WebKit {
 177
 178 class CertificateInfo;
 179 class NativeWebGestureEvent;
 180 class NativeWebKeyboardEvent;
 181 class NativeWebMouseEvent;
 182 class NativeWebWheelEvent;
 183 class PageClient;
 184 class RemoteLayerTreeScrollingPerformanceData;
 185 class RemoteLayerTreeTransaction;
 186 class RemoteScrollingCoordinatorProxy;
 187 class StringPairVector;
 188 class UserData;
 189 class ViewSnapshot;
 190 class VisitedLinkStore;
 191 class WebBackForwardList;
 192 class WebBackForwardListItem;
 193 class WebContextMenuProxy;
 194 class WebEditCommandProxy;
 195 class WebFullScreenManagerProxy;
 196 class WebNavigationState;
 197 class WebVideoFullscreenManagerProxy;
 198 class WebKeyboardEvent;
 199 class WebMouseEvent;
 200 class WebOpenPanelResultListenerProxy;
 201 class WebPageGroup;
 202 class WebProcessProxy;
 203 class WebUserContentControllerProxy;
 204 class WebWheelEvent;
 205 class WebsiteDataStore;
 206 struct AttributedString;
 207 struct ColorSpaceData;
 208 struct EditingRange;
 209 struct EditorState;
 210 struct PlatformPopupMenuData;
 211 struct PrintInfo;
 212 struct WebPopupItem;
 213
 214 #if ENABLE(VIBRATION)
 215 class WebVibrationProxy;
 216 #endif
 217
 218 #if USE(QUICK_LOOK)
 219 class QuickLookDocumentData;
 220 #endif
 221
 222 typedef GenericCallback<uint64_t> UnsignedCallback;
 223 typedef GenericCallback<EditingRange> EditingRangeCallback;
 224 typedef GenericCallback<const String&> StringCallback;
 225 typedef GenericCallback<API::SerializedScriptValue*, bool, const WebCore::ExceptionDetails&> ScriptValueCallback;
 226
 227 #if PLATFORM(GTK)
 228 typedef GenericCallback<API::Error*> PrintFinishedCallback;
 229 #endif
 230
 231 #if ENABLE(TOUCH_EVENTS)
 232 struct QueuedTouchEvents {
 233     QueuedTouchEvents(const NativeWebTouchEvent& event)
 234         : forwardedEvent(event)
 235     {
 236     }
 237     NativeWebTouchEvent forwardedEvent;
 238     Vector<NativeWebTouchEvent> deferredTouchEvents;
 239 };
 240 #endif
 241
 242 typedef GenericCallback<const String&, bool, int32_t> ValidateCommandCallback;
 243 typedef GenericCallback<const WebCore::IntRect&, const EditingRange&> RectForCharacterRangeCallback;
 244
 245 #if PLATFORM(MAC)
 246 typedef GenericCallback<const AttributedString&, const EditingRange&> AttributedStringForCharacterRangeCallback;
 247 typedef GenericCallback<const String&, double, bool> FontAtSelectionCallback;
 248 #endif
 249
 250 #if PLATFORM(IOS)
 251 typedef GenericCallback<const WebCore::IntPoint&, uint32_t, uint32_t, uint32_t> GestureCallback;
 252 typedef GenericCallback<const WebCore::IntPoint&, uint32_t> TouchesCallback;
 253 struct NodeAssistanceArguments {
 254     AssistedNodeInformation m_nodeInformation;
 255     bool m_userIsInteracting;
 256     bool m_blurPreviousNode;
 257     RefPtr<API::Object> m_userData;
 258 };
 259 #endif
 260
 261 #if PLATFORM(COCOA)
 262 typedef GenericCallback<const WebCore::MachSendRight&> MachSendRightCallback;
 263 #endif
 264
 265 class WebPageProxy : public API::ObjectImpl<API::Object::Type::Page>
 266 #if ENABLE(INPUT_TYPE_COLOR)
 267     , public WebColorPicker::Client
 268 #endif
 269 #if ENABLE(WIRELESS_PLAYBACK_TARGET) && !PLATFORM(IOS)
 270     , public WebCore::WebMediaSessionManagerClient
 271 #endif
 272     , public WebPopupMenuProxy::Client
 273     , public IPC::MessageReceiver
 274     , public IPC::MessageSender {
 275 public:
 276     static Ref<WebPageProxy> create(PageClient&, WebProcessProxy&, uint64_t pageID, Ref<API::PageConfiguration>&&);
 277     virtual ~WebPageProxy();
 278
 279     const API::PageConfiguration& configuration() const;
 280
 281     uint64_t pageID() const { return m_pageID; }
 282     WebCore::SessionID sessionID() const { return m_sessionID; }
 283     void setSessionID(WebCore::SessionID);
 284
 285     WebFrameProxy* mainFrame() const { return m_mainFrame.get(); }
 286     WebFrameProxy* focusedFrame() const { return m_focusedFrame.get(); }
 287     WebFrameProxy* frameSetLargestFrame() const { return m_frameSetLargestFrame.get(); }
 288
 289     DrawingAreaProxy* drawingArea() const { return m_drawingArea.get(); }
 290
 291     WebNavigationState& navigationState() { return *m_navigationState.get(); }
 292
 293     WebsiteDataStore& websiteDataStore() { return m_websiteDataStore; }
 294
 295 #if ENABLE(ASYNC_SCROLLING)
 296     RemoteScrollingCoordinatorProxy* scrollingCoordinatorProxy() const { return m_scrollingCoordinatorProxy.get(); }
 297 #endif
 298
 299     WebBackForwardList& backForwardList() { return m_backForwardList; }
 300
 301     bool addsVisitedLinks() const { return m_addsVisitedLinks; }
 302     void setAddsVisitedLinks(bool addsVisitedLinks) { m_addsVisitedLinks = addsVisitedLinks; }
 303
 304     void fullscreenMayReturnToInline();
 305     void didEnterFullscreen();
 306     void didExitFullscreen();
 307
 308     WebInspectorProxy* inspector();
 309
 310 #if ENABLE(REMOTE_INSPECTOR)
 311     bool allowsRemoteInspection() const { return m_allowsRemoteInspection; }
 312     void setAllowsRemoteInspection(bool);
 313     String remoteInspectionNameOverride() const { return m_remoteInspectionNameOverride; }
 314     void setRemoteInspectionNameOverride(const String&);
 315 #endif
 316
 317 #if ENABLE(VIBRATION)
 318     WebVibrationProxy* vibration() { return m_vibration.get(); }
 319 #endif
 320
 321 #if ENABLE(FULLSCREEN_API)
 322     WebFullScreenManagerProxy* fullScreenManager();
 323 #endif
 324 #if PLATFORM(IOS)
 325     RefPtr<WebVideoFullscreenManagerProxy> videoFullscreenManager();
 326
 327     bool allowsMediaDocumentInlinePlayback() const;
 328     void setAllowsMediaDocumentInlinePlayback(bool);
 329 #endif
 330
 331 #if ENABLE(CONTEXT_MENUS)
 332     API::ContextMenuClient& contextMenuClient() { return *m_contextMenuClient; }
 333     void setContextMenuClient(std::unique_ptr<API::ContextMenuClient>);
 334 #endif
 335     API::FindClient& findClient() { return *m_findClient; }
 336     void setFindClient(std::unique_ptr<API::FindClient>);
 337     API::FindMatchesClient& findMatchesClient() { return *m_findMatchesClient; }
 338     void setFindMatchesClient(std::unique_ptr<API::FindMatchesClient>);
 339     API::DiagnosticLoggingClient& diagnosticLoggingClient() { return *m_diagnosticLoggingClient; }
 340     void setDiagnosticLoggingClient(std::unique_ptr<API::DiagnosticLoggingClient>);
 341     void setFormClient(std::unique_ptr<API::FormClient>);
 342     void setNavigationClient(std::unique_ptr<API::NavigationClient>);
 343     void setHistoryClient(std::unique_ptr<API::HistoryClient>);
 344     void setLoaderClient(std::unique_ptr<API::LoaderClient>);
 345     void setPolicyClient(std::unique_ptr<API::PolicyClient>);
 346     void setInjectedBundleClient(const WKPageInjectedBundleClientBase*);
 347     WebPageInjectedBundleClient* injectedBundleClient() { return m_injectedBundleClient.get(); }
 348
 349     API::UIClient& uiClient() { return *m_uiClient; }
 350     void setUIClient(std::unique_ptr<API::UIClient>);
 351 #if PLATFORM(EFL)
 352     void initializeUIPopupMenuClient(const WKPageUIPopupMenuClientBase*);
 353 #endif
 354
 355     void initializeWebPage();
 356
 357     void close();
 358     bool tryClose();
 359     bool isClosed() const { return m_isClosed; }
 360
 361     RefPtr<API::Navigation> loadRequest(const WebCore::ResourceRequest&, WebCore::ShouldOpenExternalURLsPolicy = WebCore::ShouldOpenExternalURLsPolicy::ShouldAllowExternalSchemes, API::Object* userData = nullptr);
 362     RefPtr<API::Navigation> loadFile(const String& fileURL, const String& resourceDirectoryURL, API::Object* userData = nullptr);
 363     RefPtr<API::Navigation> loadData(API::Data*, const String& MIMEType, const String& encoding, const String& baseURL, API::Object* userData = nullptr);
 364     RefPtr<API::Navigation> loadHTMLString(const String& htmlString, const String& baseURL, API::Object* userData = nullptr);
 365     void loadAlternateHTMLString(const String& htmlString, const String& baseURL, const String& unreachableURL, API::Object* userData = nullptr);
 366     void loadPlainTextString(const String&, API::Object* userData = nullptr);
 367     void loadWebArchiveData(API::Data*, API::Object* userData = nullptr);
 368     void navigateToPDFLinkWithSimulatedClick(const String& url, WebCore::IntPoint documentPoint, WebCore::IntPoint screenPoint);
 369
 370     void stopLoading();
 371     RefPtr<API::Navigation> reload(bool reloadFromOrigin, bool contentBlockersEnabled);
 372
 373     RefPtr<API::Navigation> goForward();
 374     RefPtr<API::Navigation> goBack();
 375
 376     RefPtr<API::Navigation> goToBackForwardItem(WebBackForwardListItem*);
 377     void tryRestoreScrollPosition();
 378     void didChangeBackForwardList(WebBackForwardListItem* addedItem, Vector<RefPtr<WebBackForwardListItem>> removed);
 379     void willGoToBackForwardListItem(uint64_t itemID, const UserData&);
 380
 381     bool shouldKeepCurrentBackForwardListItemInList(WebBackForwardListItem*);
 382
 383     bool willHandleHorizontalScrollEvents() const;
 384
 385     bool canShowMIMEType(const String& mimeType);
 386
 387     bool drawsBackground() const { return m_drawsBackground; }
 388     void setDrawsBackground(bool);
 389
 390     float topContentInset() const { return m_topContentInset; }
 391     void setTopContentInset(float);
 392
 393     WebCore::Color underlayColor() const { return m_underlayColor; }
 394     void setUnderlayColor(const WebCore::Color&);
 395
 396     // At this time, m_pageExtendedBackgroundColor can be set via pageExtendedBackgroundColorDidChange() which is a message
 397     // from the UIProcess, or by didCommitLayerTree(). When PLATFORM(MAC) adopts UI side compositing, we should get rid of
 398     // the message entirely.
 399     WebCore::Color pageExtendedBackgroundColor() const { return m_pageExtendedBackgroundColor; }
 400
 401     void viewWillStartLiveResize();
 402     void viewWillEndLiveResize();
 403
 404     void setInitialFocus(bool forward, bool isKeyboardEventValid, const WebKeyboardEvent&, std::function<void (CallbackBase::Error)>);
 405
 406     void clearSelection();
 407     void restoreSelectionInFocusedEditableElement();
 408
 409     void setViewNeedsDisplay(const WebCore::IntRect&);
 410     void displayView();
 411     bool canScrollView();
 412     void scrollView(const WebCore::IntRect& scrollRect, const WebCore::IntSize& scrollOffset); // FIXME: CoordinatedGraphics should use requestScroll().
 413     void requestScroll(const WebCore::FloatPoint& scrollPosition, const WebCore::IntPoint& scrollOrigin, bool isProgrammaticScroll);
 414
 415     void setDelegatesScrolling(bool delegatesScrolling) { m_delegatesScrolling = delegatesScrolling; }
 416     bool delegatesScrolling() const { return m_delegatesScrolling; }
 417
 418     enum class ViewStateChangeDispatchMode { Deferrable, Immediate };
 419     void viewStateDidChange(WebCore::ViewState::Flags mayHaveChanged, bool wantsSynchronousReply = false, ViewStateChangeDispatchMode = ViewStateChangeDispatchMode::Deferrable);
 420     bool isInWindow() const { return m_viewState & WebCore::ViewState::IsInWindow; }
 421     void waitForDidUpdateViewState();
 422     void didUpdateViewState() { m_waitingForDidUpdateViewState = false; }
 423
 424     void layerHostingModeDidChange();
 425
 426     WebCore::IntSize viewSize() const;
 427     bool isViewVisible() const { return m_viewState & WebCore::ViewState::IsVisible; }
 428     bool isViewWindowActive() const;
 429
 430     void addMIMETypeWithCustomContentProvider(const String& mimeType);
 431
 432     void executeEditCommand(const String& commandName, const String& argument = String());
 433     void validateCommand(const String& commandName, std::function<void (const String&, bool, int32_t, CallbackBase::Error)>);
 434
 435     const EditorState& editorState() const { return m_editorState; }
 436     bool canDelete() const { return hasSelectedRange() && isContentEditable(); }
 437     bool hasSelectedRange() const { return m_editorState.selectionIsRange; }
 438     bool isContentEditable() const { return m_editorState.isContentEditable; }
 439
 440     bool maintainsInactiveSelection() const { return m_maintainsInactiveSelection; }
 441     void setMaintainsInactiveSelection(bool);
 442     void setEditable(bool);
 443     bool isEditable() const { return m_isEditable; }
 444
 445 #if PLATFORM(IOS)
 446     void executeEditCommand(const String& commandName, std::function<void (CallbackBase::Error)>);
 447     double displayedContentScale() const { return m_lastVisibleContentRectUpdate.scale(); }
 448     const WebCore::FloatRect& exposedContentRect() const { return m_lastVisibleContentRectUpdate.exposedRect(); }
 449     const WebCore::FloatRect& unobscuredContentRect() const { return m_lastVisibleContentRectUpdate.unobscuredRect(); }
 450
 451     void updateVisibleContentRects(const WebCore::FloatRect& exposedRect, const WebCore::FloatRect& unobscuredRect, const WebCore::FloatRect& unobscuredRectInScrollViewCoordinates, const WebCore::FloatRect& customFixedPositionRect, double scale, bool inStableState, bool isChangingObscuredInsetsInteractively, bool allowShrinkToFit, double timestamp, double horizontalVelocity, double verticalVelocity, double scaleChangeRate);
 452     void resendLastVisibleContentRects();
 453
 454     enum class UnobscuredRectConstraint { ConstrainedToDocumentRect, Unconstrained };
 455     WebCore::FloatRect computeCustomFixedPositionRect(const WebCore::FloatRect& unobscuredContentRect, double displayedContentScale, UnobscuredRectConstraint = UnobscuredRectConstraint::Unconstrained) const;
 456     void overflowScrollViewWillStartPanGesture();
 457     void overflowScrollViewDidScroll();
 458     void overflowScrollWillStartScroll();
 459     void overflowScrollDidEndScroll();
 460
 461     void dynamicViewportSizeUpdate(const WebCore::FloatSize& minimumLayoutSize, const WebCore::FloatSize& maximumUnobscuredSize, const WebCore::FloatRect& targetExposedContentRect, const WebCore::FloatRect& targetUnobscuredRect, const WebCore::FloatRect& targetUnobscuredRectInScrollViewCoordinates, double targetScale, int32_t deviceOrientation);
 462     void synchronizeDynamicViewportUpdate();
 463
 464     void setViewportConfigurationMinimumLayoutSize(const WebCore::FloatSize&);
 465     void setMaximumUnobscuredSize(const WebCore::FloatSize&);
 466     void setDeviceOrientation(int32_t);
 467     int32_t deviceOrientation() const { return m_deviceOrientation; }
 468     void willCommitLayerTree(uint64_t transactionID);
 469
 470     void selectWithGesture(const WebCore::IntPoint, WebCore::TextGranularity, uint32_t gestureType, uint32_t gestureState, bool isInteractingWithAssistedNode, std::function<void (const WebCore::IntPoint&, uint32_t, uint32_t, uint32_t, CallbackBase::Error)>);
 471     void updateSelectionWithTouches(const WebCore::IntPoint, uint32_t touches, bool baseIsStart, std::function<void (const WebCore::IntPoint&, uint32_t, CallbackBase::Error)>);
 472     void selectWithTwoTouches(const WebCore::IntPoint from, const WebCore::IntPoint to, uint32_t gestureType, uint32_t gestureState, std::function<void (const WebCore::IntPoint&, uint32_t, uint32_t, uint32_t, CallbackBase::Error)>);
 473     void updateBlockSelectionWithTouch(const WebCore::IntPoint, uint32_t touch, uint32_t handlePosition);
 474     void extendSelection(WebCore::TextGranularity);
 475     void selectWordBackward();
 476     void moveSelectionByOffset(int32_t offset, std::function<void (CallbackBase::Error)>);
 477     void selectTextWithGranularityAtPoint(const WebCore::IntPoint, WebCore::TextGranularity, bool isInteractingWithAssistedNode, std::function<void (CallbackBase::Error)>);
 478     void selectPositionAtPoint(const WebCore::IntPoint, bool isInteractingWithAssistedNode, std::function<void (CallbackBase::Error)>);
 479     void selectPositionAtBoundaryWithDirection(const WebCore::IntPoint, WebCore::TextGranularity, WebCore::SelectionDirection, bool isInteractingWithAssistedNode, std::function<void (CallbackBase::Error)>);
 480     void moveSelectionAtBoundaryWithDirection(WebCore::TextGranularity, WebCore::SelectionDirection, std::function<void(CallbackBase::Error)>);
 481     void beginSelectionInDirection(WebCore::SelectionDirection, std::function<void (uint64_t, CallbackBase::Error)>);
 482     void updateSelectionWithExtentPoint(const WebCore::IntPoint, bool isInteractingWithAssistedNode, std::function<void (uint64_t, CallbackBase::Error)>);
 483     void updateSelectionWithExtentPointAndBoundary(const WebCore::IntPoint, WebCore::TextGranularity, bool isInteractingWithAssistedNode, std::function<void(uint64_t, CallbackBase::Error)>);
 484     void requestAutocorrectionData(const String& textForAutocorrection, std::function<void (const Vector<WebCore::FloatRect>&, const String&, double, uint64_t, CallbackBase::Error)>);
 485     void applyAutocorrection(const String& correction, const String& originalText, std::function<void (const String&, CallbackBase::Error)>);
 486     bool applyAutocorrection(const String& correction, const String& originalText);
 487     void requestAutocorrectionContext(std::function<void (const String&, const String&, const String&, const String&, uint64_t, uint64_t, CallbackBase::Error)>);
 488     void getAutocorrectionContext(String& contextBefore, String& markedText, String& selectedText, String& contextAfter, uint64_t& location, uint64_t& length);
 489     void requestDictationContext(std::function<void (const String&, const String&, const String&, CallbackBase::Error)>);
 490     void replaceDictatedText(const String& oldText, const String& newText);
 491     void replaceSelectedText(const String& oldText, const String& newText);
 492     void didReceivePositionInformation(const InteractionInformationAtPosition&);
 493     void getPositionInformation(const WebCore::IntPoint&, InteractionInformationAtPosition&);
 494     void requestPositionInformation(const WebCore::IntPoint&);
 495     void startInteractionWithElementAtPosition(const WebCore::IntPoint&);
 496     void stopInteraction();
 497     void performActionOnElement(uint32_t action);
 498     void saveImageToLibrary(const SharedMemory::Handle& imageHandle, uint64_t imageSize);
 499     void didUpdateBlockSelectionWithTouch(uint32_t touch, uint32_t flags, float growThreshold, float shrinkThreshold);
 500     void focusNextAssistedNode(bool isForward, std::function<void (CallbackBase::Error)>);
 501     void setAssistedNodeValue(const String&);
 502     void setAssistedNodeValueAsNumber(double);
 503     void setAssistedNodeSelectedIndex(uint32_t index, bool allowMultipleSelection = false);
 504     void applicationDidEnterBackground();
 505     void applicationWillEnterForeground();
 506     void applicationWillResignActive();
 507     void applicationDidBecomeActive();
 508     void zoomToRect(WebCore::FloatRect, double minimumScale, double maximumScale);
 509     void commitPotentialTapFailed();
 510     void didNotHandleTapAsClick(const WebCore::IntPoint&);
 511     void disableDoubleTapGesturesDuringTapIfNecessary(uint64_t requestID);
 512     void didFinishDrawingPagesToPDF(const IPC::DataReference&);
 513     void contentSizeCategoryDidChange(const String& contentSizeCategory);
 514     void getLookupContextAtPoint(const WebCore::IntPoint&, std::function<void(const String&, CallbackBase::Error)>);
 515 #endif
 516
 517     void didCommitLayerTree(const WebKit::RemoteLayerTreeTransaction&);
 518
 519 #if USE(COORDINATED_GRAPHICS_MULTIPROCESS)
 520     void didRenderFrame(const WebCore::IntSize& contentsSize, const WebCore::IntRect& coveredRect);
 521     void commitPageTransitionViewport();
 522 #endif
 523 #if PLATFORM(EFL)
 524     void setThemePath(const String&);
 525 #endif
 526
 527 #if PLATFORM(GTK)
 528     void setComposition(const String& text, Vector<WebCore::CompositionUnderline> underlines, uint64_t selectionStart, uint64_t selectionEnd, uint64_t replacementRangeStart, uint64_t replacementRangeEnd);
 529     void confirmComposition(const String& compositionString, int64_t selectionStart, int64_t selectionLength);
 530     void cancelComposition();
 531 #endif
 532
 533 #if PLATFORM(GTK)
 534     void setInputMethodState(bool enabled);
 535 #endif
 536
 537 #if PLATFORM (GTK) && HAVE(GTK_GESTURES)
 538     void getCenterForZoomGesture(const WebCore::IntPoint& centerInViewCoordinates, WebCore::IntPoint& center);
 539 #endif
 540
 541 #if PLATFORM(COCOA)
 542     void windowAndViewFramesChanged(const WebCore::FloatRect& viewFrameInWindowCoordinates, const WebCore::FloatPoint& accessibilityViewCoordinates);
 543     void setMainFrameIsScrollable(bool);
 544
 545     void sendComplexTextInputToPlugin(uint64_t pluginComplexTextInputIdentifier, const String& textInput);
 546     bool shouldDelayWindowOrderingForEvent(const WebMouseEvent&);
 547     bool acceptsFirstMouse(int eventNumber, const WebMouseEvent&);
 548
 549     void setAcceleratedCompositingRootLayer(LayerOrView*);
 550     LayerOrView* acceleratedCompositingRootLayer() const;
 551
 552     void insertTextAsync(const String& text, const EditingRange& replacementRange, bool registerUndoGroup = false);
 553     void getMarkedRangeAsync(std::function<void (EditingRange, CallbackBase::Error)>);
 554     void getSelectedRangeAsync(std::function<void (EditingRange, CallbackBase::Error)>);
 555     void characterIndexForPointAsync(const WebCore::IntPoint&, std::function<void (uint64_t, CallbackBase::Error)>);
 556     void firstRectForCharacterRangeAsync(const EditingRange&, std::function<void (const WebCore::IntRect&, const EditingRange&, CallbackBase::Error)>);
 557     void setCompositionAsync(const String& text, Vector<WebCore::CompositionUnderline> underlines, const EditingRange& selectionRange, const EditingRange& replacementRange);
 558     void confirmCompositionAsync();
 559
 560     void setScrollPerformanceDataCollectionEnabled(bool);
 561     bool scrollPerformanceDataCollectionEnabled() const { return m_scrollPerformanceDataCollectionEnabled; }
 562     RemoteLayerTreeScrollingPerformanceData* scrollingPerformanceData() { return m_scrollingPerformanceData.get(); }
 563 #endif // PLATFORM(COCOA)
 564
 565 #if PLATFORM(MAC)
 566     void insertDictatedTextAsync(const String& text, const EditingRange& replacementRange, const Vector<WebCore::TextAlternativeWithRange>& dictationAlternatives, bool registerUndoGroup);
 567     void attributedSubstringForCharacterRangeAsync(const EditingRange&, std::function<void (const AttributedString&, const EditingRange&, CallbackBase::Error)>);
 568     void setFont(const String& fontFamily, double fontSize, uint64_t fontTraits);
 569     void fontAtSelection(std::function<void (const String&, double, bool, CallbackBase::Error)>);
 570
 571     void startWindowDrag();
 572     NSWindow *platformWindow();
 573
 574 #if WK_API_ENABLED
 575     NSView *inspectorAttachmentView();
 576     _WKRemoteObjectRegistry *remoteObjectRegistry();
 577 #endif
 578
 579     void intrinsicContentSizeDidChange(const WebCore::IntSize& intrinsicContentSize);
 580     CGRect boundsOfLayerInLayerBackedWindowCoordinates(CALayer *) const;
 581 #endif // PLATFORM(MAC)
 582
 583 #if PLATFORM(EFL)
 584     void handleInputMethodKeydown(bool& handled);
 585     void confirmComposition(const String&);
 586     void setComposition(const String&, Vector<WebCore::CompositionUnderline>&, int);
 587     void cancelComposition();
 588 #endif
 589
 590 #if PLATFORM(GTK)
 591     PlatformWidget viewWidget();
 592     const WebCore::Color& backgroundColor() const { return m_backgroundColor; }
 593     void setBackgroundColor(const WebCore::Color& color) { m_backgroundColor = color; }
 594 #endif
 595
 596     void handleMouseEvent(const NativeWebMouseEvent&);
 597     void handleWheelEvent(const NativeWebWheelEvent&);
 598     void handleKeyboardEvent(const NativeWebKeyboardEvent&);
 599
 600 #if ENABLE(MAC_GESTURE_EVENTS)
 601     void handleGestureEvent(const NativeWebGestureEvent&);
 602 #endif
 603
 604 #if ENABLE(IOS_TOUCH_EVENTS)
 605     void handleTouchEventSynchronously(const NativeWebTouchEvent&);
 606     void handleTouchEventAsynchronously(const NativeWebTouchEvent&);
 607
 608 #elif ENABLE(TOUCH_EVENTS)
 609     void handleTouchEvent(const NativeWebTouchEvent&);
 610 #endif
 611
 612     void scrollBy(WebCore::ScrollDirection, WebCore::ScrollGranularity);
 613     void centerSelectionInVisibleArea();
 614
 615     const String& toolTip() const { return m_toolTip; }
 616
 617     const String& userAgent() const { return m_userAgent; }
 618     void setApplicationNameForUserAgent(const String&);
 619     const String& applicationNameForUserAgent() const { return m_applicationNameForUserAgent; }
 620     void setCustomUserAgent(const String&);
 621     const String& customUserAgent() const { return m_customUserAgent; }
 622     static String standardUserAgent(const String& applicationName = String());
 623
 624     bool supportsTextEncoding() const;
 625     void setCustomTextEncodingName(const String&);
 626     String customTextEncodingName() const { return m_customTextEncodingName; }
 627
 628     bool areActiveDOMObjectsAndAnimationsSuspended() const { return m_isPageSuspended; }
 629     void resumeActiveDOMObjectsAndAnimations();
 630     void suspendActiveDOMObjectsAndAnimations();
 631
 632     double estimatedProgress() const;
 633
 634     void terminateProcess();
 635
 636     SessionState sessionState(const std::function<bool (WebBackForwardListItem&)>& = nullptr) const;
 637     RefPtr<API::Navigation> restoreFromSessionState(SessionState, bool navigate);
 638
 639     bool supportsTextZoom() const;
 640     double textZoomFactor() const { return m_textZoomFactor; }
 641     void setTextZoomFactor(double);
 642     double pageZoomFactor() const;
 643     void setPageZoomFactor(double);
 644     void setPageAndTextZoomFactors(double pageZoomFactor, double textZoomFactor);
 645
 646     void scalePage(double scale, const WebCore::IntPoint& origin);
 647     void scalePageInViewCoordinates(double scale, const WebCore::IntPoint& centerInViewCoordinates);
 648     double pageScaleFactor() const;
 649     double viewScaleFactor() const { return m_viewScaleFactor; }
 650     void scaleView(double scale);
 651     void setShouldScaleViewToFitDocument(bool);
 652
 653     float deviceScaleFactor() const;
 654     void setIntrinsicDeviceScaleFactor(float);
 655     void setCustomDeviceScaleFactor(float);
 656     void windowScreenDidChange(PlatformDisplayID);
 657
 658     void setUseFixedLayout(bool);
 659     void setFixedLayoutSize(const WebCore::IntSize&);
 660     bool useFixedLayout() const { return m_useFixedLayout; };
 661     const WebCore::IntSize& fixedLayoutSize() const { return m_fixedLayoutSize; };
 662
 663     void listenForLayoutMilestones(WebCore::LayoutMilestones);
 664
 665     bool hasHorizontalScrollbar() const { return m_mainFrameHasHorizontalScrollbar; }
 666     bool hasVerticalScrollbar() const { return m_mainFrameHasVerticalScrollbar; }
 667
 668     void setSuppressScrollbarAnimations(bool);
 669     bool areScrollbarAnimationsSuppressed() const { return m_suppressScrollbarAnimations; }
 670
 671     bool isPinnedToLeftSide() const { return m_mainFrameIsPinnedToLeftSide; }
 672     bool isPinnedToRightSide() const { return m_mainFrameIsPinnedToRightSide; }
 673     bool isPinnedToTopSide() const { return m_mainFrameIsPinnedToTopSide; }
 674     bool isPinnedToBottomSide() const { return m_mainFrameIsPinnedToBottomSide; }
 675
 676     bool rubberBandsAtLeft() const;
 677     void setRubberBandsAtLeft(bool);
 678     bool rubberBandsAtRight() const;
 679     void setRubberBandsAtRight(bool);
 680     bool rubberBandsAtTop() const;
 681     void setRubberBandsAtTop(bool);
 682     bool rubberBandsAtBottom() const;
 683     void setRubberBandsAtBottom(bool);
 684
 685     void setShouldUseImplicitRubberBandControl(bool shouldUseImplicitRubberBandControl) { m_shouldUseImplicitRubberBandControl = shouldUseImplicitRubberBandControl; }
 686     bool shouldUseImplicitRubberBandControl() const { return m_shouldUseImplicitRubberBandControl; }
 687
 688     void setEnableVerticalRubberBanding(bool);
 689     bool verticalRubberBandingIsEnabled() const;
 690     void setEnableHorizontalRubberBanding(bool);
 691     bool horizontalRubberBandingIsEnabled() const;
 692
 693     void setBackgroundExtendsBeyondPage(bool);
 694     bool backgroundExtendsBeyondPage() const;
 695
 696     void setPaginationMode(WebCore::Pagination::Mode);
 697     WebCore::Pagination::Mode paginationMode() const { return m_paginationMode; }
 698     void setPaginationBehavesLikeColumns(bool);
 699     bool paginationBehavesLikeColumns() const { return m_paginationBehavesLikeColumns; }
 700     void setPageLength(double);
 701     double pageLength() const { return m_pageLength; }
 702     void setGapBetweenPages(double);
 703     double gapBetweenPages() const { return m_gapBetweenPages; }
 704     unsigned pageCount() const { return m_pageCount; }
 705
 706 #if PLATFORM(COCOA)
 707     // Called by the web process through a message.
 708     void registerWebProcessAccessibilityToken(const IPC::DataReference&);
 709     // Called by the UI process when it is ready to send its tokens to the web process.
 710     void registerUIProcessAccessibilityTokens(const IPC::DataReference& elemenToken, const IPC::DataReference& windowToken);
 711     bool readSelectionFromPasteboard(const String& pasteboardName);
 712     String stringSelectionForPasteboard();
 713     RefPtr<WebCore::SharedBuffer> dataSelectionForPasteboard(const String& pasteboardType);
 714     void makeFirstResponder();
 715
 716     ColorSpaceData colorSpace();
 717 #endif
 718
 719 #if ENABLE(SERVICE_CONTROLS)
 720     void replaceSelectionWithPasteboardData(const Vector<String>& types, const IPC::DataReference&);
 721 #endif
 722
 723     void pageScaleFactorDidChange(double);
 724     void pluginScaleFactorDidChange(double);
 725     void pluginZoomFactorDidChange(double);
 726
 727     // Find.
 728     void findString(const String&, FindOptions, unsigned maxMatchCount);
 729     void findStringMatches(const String&, FindOptions, unsigned maxMatchCount);
 730     void getImageForFindMatch(int32_t matchIndex);
 731     void selectFindMatch(int32_t matchIndex);
 732     void didGetImageForFindMatch(const ShareableBitmap::Handle& contentImageHandle, uint32_t matchIndex);
 733     void hideFindUI();
 734     void countStringMatches(const String&, FindOptions, unsigned maxMatchCount);
 735     void didCountStringMatches(const String&, uint32_t matchCount);
 736     void setTextIndicator(const WebCore::TextIndicatorData&, uint64_t /* WebCore::TextIndicatorWindowLifetime */ lifetime = 0 /* Permanent */);
 737     void setTextIndicatorAnimationProgress(float);
 738     void clearTextIndicator();
 739     void didFindString(const String&, const Vector<WebCore::IntRect>&, uint32_t matchCount, int32_t matchIndex);
 740     void didFailToFindString(const String&);
 741     void didFindStringMatches(const String&, const Vector<Vector<WebCore::IntRect>>& matchRects, int32_t firstIndexAfterSelection);
 742
 743     void getContentsAsString(std::function<void (const String&, CallbackBase::Error)>);
 744     void getBytecodeProfile(std::function<void (const String&, CallbackBase::Error)>);
 745
 746 #if ENABLE(MHTML)
 747     void getContentsAsMHTMLData(std::function<void (API::Data*, CallbackBase::Error)>);
 748 #endif
 749     void getMainResourceDataOfFrame(WebFrameProxy*, std::function<void (API::Data*, CallbackBase::Error)>);
 750     void getResourceDataFromFrame(WebFrameProxy*, API::URL*, std::function<void (API::Data*, CallbackBase::Error)>);
 751     void getRenderTreeExternalRepresentation(std::function<void (const String&, CallbackBase::Error)>);
 752     void getSelectionOrContentsAsString(std::function<void (const String&, CallbackBase::Error)>);
 753     void getSelectionAsWebArchiveData(std::function<void (API::Data*, CallbackBase::Error)>);
 754     void getSourceForFrame(WebFrameProxy*, std::function<void (const String&, CallbackBase::Error)>);
 755     void getWebArchiveOfFrame(WebFrameProxy*, std::function<void (API::Data*, CallbackBase::Error)>);
 756     void runJavaScriptInMainFrame(const String&, std::function<void (API::SerializedScriptValue*, bool hadException, const WebCore::ExceptionDetails&, CallbackBase::Error)> callbackFunction);
 757     void forceRepaint(PassRefPtr<VoidCallback>);
 758
 759     float headerHeight(WebFrameProxy*);
 760     float footerHeight(WebFrameProxy*);
 761     void drawHeader(WebFrameProxy*, const WebCore::FloatRect&);
 762     void drawFooter(WebFrameProxy*, const WebCore::FloatRect&);
 763
 764 #if PLATFORM(COCOA)
 765     // Dictionary.
 766     void performDictionaryLookupAtLocation(const WebCore::FloatPoint&);
 767     void performDictionaryLookupOfCurrentSelection();
 768 #endif
 769
 770     void receivedPolicyDecision(WebCore::PolicyAction, WebFrameProxy*, uint64_t listenerID, API::Navigation* navigationID);
 771
 772     void backForwardRemovedItem(uint64_t itemID);
 773
 774 #if ENABLE(DRAG_SUPPORT)
 775     // Drag and drop support.
 776     void dragEntered(WebCore::DragData&, const String& dragStorageName = String());
 777     void dragUpdated(WebCore::DragData&, const String& dragStorageName = String());
 778     void dragExited(WebCore::DragData&, const String& dragStorageName = String());
 779     void performDragOperation(WebCore::DragData&, const String& dragStorageName, const SandboxExtension::Handle&, const SandboxExtension::HandleArray&);
 780
 781     void didPerformDragControllerAction(uint64_t dragOperation, bool mouseIsOverFileInput, unsigned numberOfItemsToBeAccepted);
 782     void dragEnded(const WebCore::IntPoint& clientPosition, const WebCore::IntPoint& globalPosition, uint64_t operation);
 783 #if PLATFORM(COCOA)
 784     void setDragImage(const WebCore::IntPoint& clientPosition, const ShareableBitmap::Handle& dragImageHandle, bool isLinkDrag);
 785     void setPromisedDataForImage(const String& pasteboardName, const SharedMemory::Handle& imageHandle, uint64_t imageSize, const String& filename, const String& extension,
 786                          const String& title, const String& url, const String& visibleURL, const SharedMemory::Handle& archiveHandle, uint64_t archiveSize);
 787 #if ENABLE(ATTACHMENT_ELEMENT)
 788     void setPromisedDataForAttachment(const String& pasteboardName, const String& filename, const String& extension, const String& title, const String& url, const String& visibleURL);
 789 #endif
 790 #endif
 791 #if PLATFORM(GTK)
 792     void startDrag(const WebCore::DragData&, const ShareableBitmap::Handle& dragImage);
 793 #endif
 794 #endif
 795
 796     void processDidBecomeUnresponsive();
 797     void processDidBecomeResponsive();
 798     void processDidCrash();
 799     void willChangeProcessIsResponsive();
 800     void didChangeProcessIsResponsive();
 801
 802 #if PLATFORM(IOS)
 803     void processWillBecomeSuspended();
 804     void processWillBecomeForeground();
 805 #endif
 806
 807     virtual void enterAcceleratedCompositingMode(const LayerTreeContext&);
 808     virtual void exitAcceleratedCompositingMode();
 809     virtual void updateAcceleratedCompositingMode(const LayerTreeContext&);
 810     void willEnterAcceleratedCompositingMode();
 811
 812     enum UndoOrRedo { Undo, Redo };
 813     void addEditCommand(WebEditCommandProxy*);
 814     void removeEditCommand(WebEditCommandProxy*);
 815     bool isValidEditCommand(WebEditCommandProxy*);
 816     void registerEditCommand(PassRefPtr<WebEditCommandProxy>, UndoOrRedo);
 817
 818 #if PLATFORM(COCOA)
 819     void registerKeypressCommandName(const String& name) { m_knownKeypressCommandNames.add(name); }
 820     bool isValidKeypressCommandName(const String& name) const { return m_knownKeypressCommandNames.contains(name); }
 821 #endif
 822
 823     WebProcessProxy& process() { return m_process; }
 824     PlatformProcessIdentifier processIdentifier() const;
 825
 826     WebPreferences& preferences() { return m_preferences; }
 827     void setPreferences(WebPreferences&);
 828
 829     WebPageGroup& pageGroup() { return m_pageGroup; }
 830
 831     bool isValid() const;
 832
 833 #if ENABLE(DRAG_SUPPORT)
 834     WebCore::DragOperation currentDragOperation() const { return m_currentDragOperation; }
 835     bool currentDragIsOverFileInput() const { return m_currentDragIsOverFileInput; }
 836     unsigned currentDragNumberOfFilesToBeAccepted() const { return m_currentDragNumberOfFilesToBeAccepted; }
 837     void resetCurrentDragInformation()
 838     {
 839         m_currentDragOperation = WebCore::DragOperationNone;
 840         m_currentDragIsOverFileInput = false;
 841         m_currentDragNumberOfFilesToBeAccepted = 0;
 842     }
 843 #endif
 844
 845     void preferencesDidChange();
 846
 847 #if ENABLE(CONTEXT_MENUS)
 848     // Called by the WebContextMenuProxy.
 849     void contextMenuItemSelected(const WebContextMenuItemData&);
 850 #endif
 851
 852     // Called by the WebOpenPanelResultListenerProxy.
 853 #if PLATFORM(IOS)
 854     void didChooseFilesForOpenPanelWithDisplayStringAndIcon(const Vector<String>&, const String& displayString, const API::Data* iconData);
 855 #endif
 856     void didChooseFilesForOpenPanel(const Vector<String>&);
 857     void didCancelForOpenPanel();
 858
 859     WebPageCreationParameters creationParameters();
 860
 861 #if USE(COORDINATED_GRAPHICS_MULTIPROCESS)
 862     void findZoomableAreaForPoint(const WebCore::IntPoint&, const WebCore::IntSize&);
 863 #endif
 864
 865     void handleDownloadRequest(DownloadProxy*);
 866
 867     void advanceToNextMisspelling(bool startBeforeSelection);
 868     void changeSpellingToWord(const String& word);
 869 #if USE(APPKIT)
 870     void uppercaseWord();
 871     void lowercaseWord();
 872     void capitalizeWord();
 873 #endif
 874
 875 #if PLATFORM(COCOA)
 876     bool isSmartInsertDeleteEnabled() const { return m_isSmartInsertDeleteEnabled; }
 877     void setSmartInsertDeleteEnabled(bool);
 878 #endif
 879
 880 #if PLATFORM(GTK)
 881     String accessibilityPlugID() const { return m_accessibilityPlugID; }
 882 #endif
 883
 884     void setCanRunModal(bool);
 885     bool canRunModal();
 886
 887     void beginPrinting(WebFrameProxy*, const PrintInfo&);
 888     void endPrinting();
 889     void computePagesForPrinting(WebFrameProxy*, const PrintInfo&, PassRefPtr<ComputedPagesCallback>);
 890 #if PLATFORM(COCOA)
 891     void drawRectToImage(WebFrameProxy*, const PrintInfo&, const WebCore::IntRect&, const WebCore::IntSize&, PassRefPtr<ImageCallback>);
 892     void drawPagesToPDF(WebFrameProxy*, const PrintInfo&, uint32_t first, uint32_t count, PassRefPtr<DataCallback>);
 893 #elif PLATFORM(GTK)
 894     void drawPagesForPrinting(WebFrameProxy*, const PrintInfo&, PassRefPtr<PrintFinishedCallback>);
 895 #endif
 896
 897     PageLoadState& pageLoadState() { return m_pageLoadState; }
 898
 899 #if PLATFORM(COCOA)
 900     void handleAlternativeTextUIResult(const String& result);
 901 #endif
 902
 903     void saveDataToFileInDownloadsFolder(const String& suggestedFilename, const String& mimeType, const String& originatingURLString, API::Data*);
 904     void savePDFToFileInDownloadsFolder(const String& suggestedFilename, const String& originatingURLString, const IPC::DataReference&);
 905 #if PLATFORM(COCOA)
 906     void savePDFToTemporaryFolderAndOpenWithNativeApplicationRaw(const String& suggestedFilename, const String& originatingURLString, const uint8_t* data, unsigned long size, const String& pdfUUID);
 907     void savePDFToTemporaryFolderAndOpenWithNativeApplication(const String& suggestedFilename, const String& originatingURLString, const IPC::DataReference&, const String& pdfUUID);
 908     void openPDFFromTemporaryFolderWithNativeApplication(const String& pdfUUID);
 909 #endif
 910
 911     WebCore::IntRect visibleScrollerThumbRect() const { return m_visibleScrollerThumbRect; }
 912
 913     uint64_t renderTreeSize() const { return m_renderTreeSize; }
 914
 915     void printMainFrame();
 916
 917     void setMediaVolume(float);
 918     void setMuted(bool);
 919     void setMayStartMediaWhenInWindow(bool);
 920     bool mayStartMediaWhenInWindow() const { return m_mayStartMediaWhenInWindow; }
 921
 922 #if ENABLE(MEDIA_SESSION)
 923     bool hasMediaSessionWithActiveMediaElements() const { return m_hasMediaSessionWithActiveMediaElements; }
 924     void handleMediaEvent(WebCore::MediaEventType);
 925     void setVolumeOfMediaElement(double, uint64_t);
 926 #endif
 927
 928     // WebPopupMenuProxy::Client
 929     virtual NativeWebMouseEvent* currentlyProcessedMouseDownEvent() override;
 930
 931     void setSuppressVisibilityUpdates(bool flag);
 932     bool suppressVisibilityUpdates() { return m_suppressVisibilityUpdates; }
 933
 934 #if PLATFORM(IOS)
 935     void willStartUserTriggeredZooming();
 936
 937     void potentialTapAtPosition(const WebCore::FloatPoint&, uint64_t& requestID);
 938     void commitPotentialTap();
 939     void cancelPotentialTap();
 940     void tapHighlightAtPosition(const WebCore::FloatPoint&, uint64_t& requestID);
 941     void handleTap(const WebCore::FloatPoint&);
 942
 943     void inspectorNodeSearchMovedToPosition(const WebCore::FloatPoint&);
 944     void inspectorNodeSearchEndedAtPosition(const WebCore::FloatPoint&);
 945
 946     void blurAssistedNode();
 947 #endif
 948
 949     void postMessageToInjectedBundle(const String& messageName, API::Object* messageBody);
 950
 951 #if ENABLE(INPUT_TYPE_COLOR)
 952     void setColorPickerColor(const WebCore::Color&);
 953     void endColorPicker();
 954 #endif
 955
 956     WebCore::IntSize minimumLayoutSize() const { return m_minimumLayoutSize; }
 957     void setMinimumLayoutSize(const WebCore::IntSize&);
 958
 959     bool autoSizingShouldExpandToViewHeight() const { return m_autoSizingShouldExpandToViewHeight; }
 960     void setAutoSizingShouldExpandToViewHeight(bool);
 961
 962     void didReceiveAuthenticationChallengeProxy(uint64_t frameID, PassRefPtr<AuthenticationChallengeProxy>);
 963
 964     int64_t spellDocumentTag();
 965     void didFinishCheckingText(uint64_t requestID, const Vector<WebCore::TextCheckingResult>&);
 966     void didCancelCheckingText(uint64_t requestID);
 967
 968     void connectionWillOpen(IPC::Connection&);
 969     void webProcessWillShutDown();
 970
 971     void processDidFinishLaunching();
 972
 973     void didSaveToPageCache();
 974
 975     void setScrollPinningBehavior(WebCore::ScrollPinningBehavior);
 976     WebCore::ScrollPinningBehavior scrollPinningBehavior() const { return m_scrollPinningBehavior; }
 977
 978     void setOverlayScrollbarStyle(WTF::Optional<WebCore::ScrollbarOverlayStyle>);
 979     WTF::Optional<WebCore::ScrollbarOverlayStyle> overlayScrollbarStyle() const { return m_scrollbarOverlayStyle; }
 980
 981     bool shouldRecordNavigationSnapshots() const { return m_shouldRecordNavigationSnapshots; }
 982     void setShouldRecordNavigationSnapshots(bool shouldRecordSnapshots) { m_shouldRecordNavigationSnapshots = shouldRecordSnapshots; }
 983     void recordNavigationSnapshot();
 984     void recordNavigationSnapshot(WebBackForwardListItem&);
 985
 986 #if PLATFORM(COCOA)
 987     PassRefPtr<ViewSnapshot> takeViewSnapshot();
 988 #endif
 989
 990 #if ENABLE(SUBTLE_CRYPTO)
 991     void wrapCryptoKey(const Vector<uint8_t>&, bool& succeeded, Vector<uint8_t>&);
 992     void unwrapCryptoKey(const Vector<uint8_t>&, bool& succeeded, Vector<uint8_t>&);
 993 #endif
 994
 995     void takeSnapshot(WebCore::IntRect, WebCore::IntSize bitmapSize, SnapshotOptions, std::function<void (const ShareableBitmap::Handle&, CallbackBase::Error)>);
 996
 997     void navigationGestureDidBegin();
 998     void navigationGestureWillEnd(bool willNavigate, WebBackForwardListItem&);
 999     void navigationGestureDidEnd(bool willNavigate, WebBackForwardListItem&);
1000     void navigationGestureDidEnd();
1001     void navigationGestureSnapshotWasRemoved();
1002     void willRecordNavigationSnapshot(WebBackForwardListItem&);
1003
1004     bool isShowingNavigationGestureSnapshot() const { return m_isShowingNavigationGestureSnapshot; }
1005
1006     bool isPlayingAudio() const { return !!(m_mediaState & WebCore::MediaProducer::IsPlayingAudio); }
1007     void isPlayingMediaDidChange(WebCore::MediaProducer::MediaStateFlags, uint64_t);
1008
1009 #if ENABLE(MEDIA_SESSION)
1010     void hasMediaSessionWithActiveMediaElementsDidChange(bool);
1011     void mediaSessionMetadataDidChange(const WebCore::MediaSessionMetadata&);
1012     void focusedContentMediaElementDidChange(uint64_t);
1013 #endif
1014
1015 #if PLATFORM(MAC)
1016     void removeNavigationGestureSnapshot();
1017
1018     API::HitTestResult* lastMouseMoveHitTestResult() const { return m_lastMouseMoveHitTestResult.get(); }
1019     void performImmediateActionHitTestAtLocation(WebCore::FloatPoint);
1020
1021     void immediateActionDidUpdate();
1022     void immediateActionDidCancel();
1023     void immediateActionDidComplete();
1024
1025     void* immediateActionAnimationControllerForHitTestResult(RefPtr<API::HitTestResult>, uint64_t, RefPtr<API::Object>);
1026
1027     void installViewStateChangeCompletionHandler(void(^completionHandler)());
1028 #endif
1029
1030 #if PLATFORM(EFL) && HAVE(ACCESSIBILITY) && defined(HAVE_ECORE_X)
1031     bool accessibilityObjectReadByPoint(const WebCore::IntPoint&);
1032     bool accessibilityObjectReadPrevious();
1033     bool accessibilityObjectReadNext();
1034 #endif
1035
1036 #if USE(UNIFIED_TEXT_CHECKING)
1037     void checkTextOfParagraph(const String& text, uint64_t checkingTypes, Vector<WebCore::TextCheckingResult>& results);
1038 #endif
1039     void getGuessesForWord(const String& word, const String& context, Vector<String>& guesses);
1040
1041     void setShouldDispatchFakeMouseMoveEvents(bool);
1042
1043     // Diagnostic messages logging.
1044     void logDiagnosticMessage(const String& message, const String& description, bool shouldSample);
1045     void logDiagnosticMessageWithResult(const String& message, const String& description, uint32_t result, bool shouldSample);
1046     void logDiagnosticMessageWithValue(const String& message, const String& description, const String& value, bool shouldSample);
1047     void logSampledDiagnosticMessage(const String& message, const String& description);
1048     void logSampledDiagnosticMessageWithResult(const String& message, const String& description, uint32_t result);
1049     void logSampledDiagnosticMessageWithValue(const String& message, const String& description, const String& value);
1050
1051 #if ENABLE(WIRELESS_PLAYBACK_TARGET) && !PLATFORM(IOS)
1052     void addPlaybackTargetPickerClient(uint64_t);
1053     void removePlaybackTargetPickerClient(uint64_t);
1054     void showPlaybackTargetPicker(uint64_t, const WebCore::FloatRect&, bool hasVideo);
1055     void playbackTargetPickerClientStateDidChange(uint64_t, WebCore::MediaProducer::MediaStateFlags);
1056     void setMockMediaPlaybackTargetPickerEnabled(bool);
1057     void setMockMediaPlaybackTargetPickerState(const String&, WebCore::MediaPlaybackTargetContext::State);
1058
1059     // WebMediaSessionManagerClient
1060     virtual void setPlaybackTarget(uint64_t, Ref<WebCore::MediaPlaybackTarget>&&) override;
1061     virtual void externalOutputDeviceAvailableDidChange(uint64_t, bool) override;
1062     virtual void setShouldPlayToPlaybackTarget(uint64_t, bool) override;
1063 #endif
1064
1065     void didChangeBackgroundColor();
1066     void didLayoutForCustomContentProvider();
1067
1068     // For testing
1069     void clearWheelEventTestTrigger();
1070     void callAfterNextPresentationUpdate(std::function<void (CallbackBase::Error)>);
1071
1072     void didLayout(uint32_t layoutMilestones);
1073
1074     void didRestoreScrollPosition();
1075
1076 private:
1077     WebPageProxy(PageClient&, WebProcessProxy&, uint64_t pageID, Ref<API::PageConfiguration>&&);
1078     void platformInitialize();
1079
1080     void updateViewState(WebCore::ViewState::Flags flagsToUpdate = WebCore::ViewState::AllFlags);
1081     void updateActivityToken();
1082     void updateProccessSuppressionState();
1083
1084     enum class ResetStateReason {
1085         PageInvalidated,
1086         WebProcessExited,
1087     };
1088     void resetState(ResetStateReason);
1089     void resetStateAfterProcessExited();
1090
1091     void setUserAgent(const String&);
1092
1093     // IPC::MessageReceiver
1094     // Implemented in generated WebPageProxyMessageReceiver.cpp
1095     virtual void didReceiveMessage(IPC::Connection&, IPC::MessageDecoder&) override;
1096     virtual void didReceiveSyncMessage(IPC::Connection&, IPC::MessageDecoder&, std::unique_ptr<IPC::MessageEncoder>&) override;
1097
1098     // IPC::MessageSender
1099     virtual bool sendMessage(std::unique_ptr<IPC::MessageEncoder>, unsigned messageSendFlags) override;
1100     virtual IPC::Connection* messageSenderConnection() override;
1101     virtual uint64_t messageSenderDestinationID() override;
1102
1103     // WebPopupMenuProxy::Client
1104     virtual void valueChangedForPopupMenu(WebPopupMenuProxy*, int32_t newSelectedIndex) override;
1105     virtual void setTextFromItemForPopupMenu(WebPopupMenuProxy*, int32_t index) override;
1106 #if PLATFORM(GTK)
1107     virtual void failedToShowPopupMenu() override;
1108 #endif
1109
1110     void didCreateMainFrame(uint64_t frameID);
1111     void didCreateSubframe(uint64_t frameID);
1112
1113     void didStartProvisionalLoadForFrame(uint64_t frameID, uint64_t navigationID, const String& url, const String& unreachableURL, const UserData&);
1114     void didReceiveServerRedirectForProvisionalLoadForFrame(uint64_t frameID, uint64_t navigationID, const String&, const UserData&);
1115     void didChangeProvisionalURLForFrame(uint64_t frameID, uint64_t navigationID, const String& url);
1116     void didFailProvisionalLoadForFrame(uint64_t frameID, const WebCore::SecurityOriginData& frameSecurityOrigin, uint64_t navigationID, const String& provisionalURL, const WebCore::ResourceError&, const UserData&);
1117     void didCommitLoadForFrame(uint64_t frameID, uint64_t navigationID, const String& mimeType, bool frameHasCustomContentProvider, bool mainFramePluginHandlesPageScaleGesture, uint32_t frameLoadType, const WebCore::CertificateInfo&, bool containsPluginDocument, const UserData&);
1118     void didFinishDocumentLoadForFrame(uint64_t frameID, uint64_t navigationID, const UserData&);
1119     void didFinishLoadForFrame(uint64_t frameID, uint64_t navigationID, const UserData&);
1120     void didFailLoadForFrame(uint64_t frameID, uint64_t navigationID, const WebCore::ResourceError&, const UserData&);
1121     void didSameDocumentNavigationForFrame(uint64_t frameID, uint64_t navigationID, uint32_t sameDocumentNavigationType, const String&, const UserData&);
1122     void didReceiveTitleForFrame(uint64_t frameID, const String&, const UserData&);
1123     void didFirstLayoutForFrame(uint64_t frameID, const UserData&);
1124     void didFirstVisuallyNonEmptyLayoutForFrame(uint64_t frameID, const UserData&);
1125     void didDisplayInsecureContentForFrame(uint64_t frameID, const UserData&);
1126     void didRunInsecureContentForFrame(uint64_t frameID, const UserData&);
1127     void didDetectXSSForFrame(uint64_t frameID, const UserData&);
1128     void frameDidBecomeFrameSet(uint64_t frameID, bool);
1129     void didStartProgress();
1130     void didChangeProgress(double);
1131     void didFinishProgress();
1132     void setNetworkRequestsInProgress(bool);
1133
1134     void didDestroyNavigation(uint64_t navigationID);
1135
1136     void decidePolicyForNavigationAction(uint64_t frameID, const WebCore::SecurityOriginData& frameSecurityOrigin, uint64_t navigationID, const NavigationActionData&, uint64_t originatingFrameID, const WebCore::SecurityOriginData& originatingFrameSecurityOrigin, const WebCore::ResourceRequest& originalRequest, const WebCore::ResourceRequest&, uint64_t listenerID, const UserData&, bool& receivedPolicyAction, uint64_t& newNavigationID, uint64_t& policyAction, uint64_t& downloadID);
1137     void decidePolicyForNewWindowAction(uint64_t frameID, const WebCore::SecurityOriginData& frameSecurityOrigin, const NavigationActionData&, const WebCore::ResourceRequest&, const String& frameName, uint64_t listenerID, const UserData&);
1138     void decidePolicyForResponse(uint64_t frameID, const WebCore::SecurityOriginData& frameSecurityOrigin, const WebCore::ResourceResponse&, const WebCore::ResourceRequest&, bool canShowMIMEType, uint64_t listenerID, const UserData&);
1139     void decidePolicyForResponseSync(uint64_t frameID, const WebCore::SecurityOriginData& frameSecurityOrigin, const WebCore::ResourceResponse&, const WebCore::ResourceRequest&, bool canShowMIMEType, uint64_t listenerID, const UserData&, bool& receivedPolicyAction, uint64_t& policyAction, uint64_t& downloadID);
1140     void unableToImplementPolicy(uint64_t frameID, const WebCore::ResourceError&, const UserData&);
1141
1142     void willSubmitForm(uint64_t frameID, uint64_t sourceFrameID, const Vector<std::pair<String, String>>& textFieldValues, uint64_t listenerID, const UserData&);
1143
1144     // History client
1145     void didNavigateWithNavigationData(const WebNavigationDataStore&, uint64_t frameID);
1146     void didPerformClientRedirect(const String& sourceURLString, const String& destinationURLString, uint64_t frameID);
1147     void didPerformServerRedirect(const String& sourceURLString, const String& destinationURLString, uint64_t frameID);
1148     void didUpdateHistoryTitle(const String& title, const String& url, uint64_t frameID);
1149
1150     // UI client
1151     void createNewPage(uint64_t frameID, const WebCore::SecurityOriginData&, const WebCore::ResourceRequest&, const WebCore::WindowFeatures&, const NavigationActionData&, uint64_t& newPageID, WebPageCreationParameters&);
1152     void showPage();
1153     void closePage(bool stopResponsivenessTimer);
1154     void runJavaScriptAlert(uint64_t frameID, const WebCore::SecurityOriginData&, const String&, RefPtr<Messages::WebPageProxy::RunJavaScriptAlert::DelayedReply>);
1155     void runJavaScriptConfirm(uint64_t frameID, const WebCore::SecurityOriginData&, const String&, RefPtr<Messages::WebPageProxy::RunJavaScriptConfirm::DelayedReply>);
1156     void runJavaScriptPrompt(uint64_t frameID, const WebCore::SecurityOriginData&, const String&, const String&, RefPtr<Messages::WebPageProxy::RunJavaScriptPrompt::DelayedReply>);
1157     void setStatusText(const String&);
1158     void mouseDidMoveOverElement(const WebHitTestResultData&, uint32_t modifiers, const UserData&);
1159
1160 #if ENABLE(NETSCAPE_PLUGIN_API)
1161     void unavailablePluginButtonClicked(uint32_t opaquePluginUnavailabilityReason, const String& mimeType, const String& pluginURLString, const String& pluginsPageURLString, const String& frameURLString, const String& pageURLString);
1162 #endif // ENABLE(NETSCAPE_PLUGIN_API)
1163 #if ENABLE(WEBGL)
1164     void webGLPolicyForURL(const String& url, uint32_t& loadPolicy);
1165     void resolveWebGLPolicyForURL(const String& url, uint32_t& loadPolicy);
1166 #endif // ENABLE(WEBGL)
1167     void setToolbarsAreVisible(bool toolbarsAreVisible);
1168     void getToolbarsAreVisible(bool& toolbarsAreVisible);
1169     void setMenuBarIsVisible(bool menuBarIsVisible);
1170     void getMenuBarIsVisible(bool& menuBarIsVisible);
1171     void setStatusBarIsVisible(bool statusBarIsVisible);
1172     void getStatusBarIsVisible(bool& statusBarIsVisible);
1173     void setIsResizable(bool isResizable);
1174     void getIsResizable(bool& isResizable);
1175     void setWindowFrame(const WebCore::FloatRect&);
1176     void getWindowFrame(WebCore::FloatRect&);
1177     void screenToRootView(const WebCore::IntPoint& screenPoint, WebCore::IntPoint& windowPoint);
1178     void rootViewToScreen(const WebCore::IntRect& viewRect, WebCore::IntRect& result);
1179 #if PLATFORM(IOS)
1180     void accessibilityScreenToRootView(const WebCore::IntPoint& screenPoint, WebCore::IntPoint& windowPoint);
1181     void rootViewToAccessibilityScreen(const WebCore::IntRect& viewRect, WebCore::IntRect& result);
1182 #endif
1183     void runBeforeUnloadConfirmPanel(const String& message, uint64_t frameID, bool& shouldClose);
1184     void didChangeViewportProperties(const WebCore::ViewportAttributes&);
1185     void pageDidScroll();
1186     void runOpenPanel(uint64_t frameID, const WebCore::FileChooserSettings&);
1187     void printFrame(uint64_t frameID);
1188     void exceededDatabaseQuota(uint64_t frameID, const String& originIdentifier, const String& databaseName, const String& displayName, uint64_t currentQuota, uint64_t currentOriginUsage, uint64_t currentDatabaseUsage, uint64_t expectedUsage, PassRefPtr<Messages::WebPageProxy::ExceededDatabaseQuota::DelayedReply>);
1189     void reachedApplicationCacheOriginQuota(const String& originIdentifier, uint64_t currentQuota, uint64_t totalBytesNeeded, PassRefPtr<Messages::WebPageProxy::ReachedApplicationCacheOriginQuota::DelayedReply>);
1190     void requestGeolocationPermissionForFrame(uint64_t geolocationID, uint64_t frameID, String originIdentifier);
1191
1192     void requestUserMediaPermissionForFrame(uint64_t userMediaID, uint64_t frameID, String originIdentifier, const Vector<String>& audioDeviceUIDs, const Vector<String>& videoDeviceUIDs);
1193     void checkUserMediaPermissionForFrame(uint64_t userMediaID, uint64_t frameID, String originIdentifier);
1194
1195     void runModal();
1196     void notifyScrollerThumbIsVisibleInRect(const WebCore::IntRect&);
1197     void recommendedScrollbarStyleDidChange(int32_t newStyle);
1198     void didChangeScrollbarsForMainFrame(bool hasHorizontalScrollbar, bool hasVerticalScrollbar);
1199     void didChangeScrollOffsetPinningForMainFrame(bool pinnedToLeftSide, bool pinnedToRightSide, bool pinnedToTopSide, bool pinnedToBottomSide);
1200     void didChangePageCount(unsigned);
1201     void pageExtendedBackgroundColorDidChange(const WebCore::Color&);
1202 #if ENABLE(NETSCAPE_PLUGIN_API)
1203     void didFailToInitializePlugin(const String& mimeType, const String& frameURLString, const String& pageURLString);
1204     void didBlockInsecurePluginVersion(const String& mimeType, const String& pluginURLString, const String& frameURLString, const String& pageURLString, bool replacementObscured);
1205 #endif // ENABLE(NETSCAPE_PLUGIN_API)
1206     void setCanShortCircuitHorizontalWheelEvents(bool canShortCircuitHorizontalWheelEvents) { m_canShortCircuitHorizontalWheelEvents = canShortCircuitHorizontalWheelEvents; }
1207
1208     void reattachToWebProcess();
1209     RefPtr<API::Navigation> reattachToWebProcessForReload();
1210     RefPtr<API::Navigation> reattachToWebProcessWithItem(WebBackForwardListItem*);
1211
1212     void requestNotificationPermission(uint64_t notificationID, const String& originString);
1213     void showNotification(const String& title, const String& body, const String& iconURL, const String& tag, const String& lang, const String& dir, const String& originString, uint64_t notificationID);
1214     void cancelNotification(uint64_t notificationID);
1215     void clearNotifications(const Vector<uint64_t>& notificationIDs);
1216     void didDestroyNotification(uint64_t notificationID);
1217
1218 #if USE(COORDINATED_GRAPHICS_MULTIPROCESS)
1219     void pageDidRequestScroll(const WebCore::IntPoint&);
1220     void pageTransitionViewportReady();
1221     void didFindZoomableArea(const WebCore::IntPoint&, const WebCore::IntRect&);
1222 #endif
1223
1224     void didChangeContentSize(const WebCore::IntSize&);
1225
1226 #if ENABLE(INPUT_TYPE_COLOR)
1227     void showColorPicker(const WebCore::Color& initialColor, const WebCore::IntRect&);
1228     virtual void didChooseColor(const WebCore::Color&) override;
1229     virtual void didEndColorPicker() override;
1230 #endif
1231
1232     void editorStateChanged(const EditorState&);
1233     void compositionWasCanceled(const EditorState&);
1234
1235     // Back/Forward list management
1236     void backForwardAddItem(uint64_t itemID);
1237     void backForwardGoToItem(uint64_t itemID, SandboxExtension::Handle&);
1238     void backForwardItemAtIndex(int32_t index, uint64_t& itemID);
1239     void backForwardBackListCount(int32_t& count);
1240     void backForwardForwardListCount(int32_t& count);
1241     void backForwardClear();
1242
1243     // Undo management
1244     void registerEditCommandForUndo(uint64_t commandID, uint32_t editAction);
1245     void registerInsertionUndoGrouping();
1246     void clearAllEditCommands();
1247     void canUndoRedo(uint32_t action, bool& result);
1248     void executeUndoRedo(uint32_t action, bool& result);
1249
1250     // Keyboard handling
1251 #if PLATFORM(COCOA)
1252     void executeSavedCommandBySelector(const String& selector, bool& handled);
1253 #endif
1254
1255 #if PLATFORM(GTK)
1256     void getEditorCommandsForKeyEvent(const AtomicString&, Vector<String>&);
1257     void bindAccessibilityTree(const String&);
1258 #endif
1259 #if PLATFORM(EFL)
1260     void getEditorCommandsForKeyEvent(Vector<String>&);
1261 #endif
1262
1263     // Popup Menu.
1264     void showPopupMenu(const WebCore::IntRect& rect, uint64_t textDirection, const Vector<WebPopupItem>& items, int32_t selectedIndex, const PlatformPopupMenuData&);
1265     void hidePopupMenu();
1266
1267 #if ENABLE(CONTEXT_MENUS)
1268     void showContextMenu(const ContextMenuContextData&, const UserData&);
1269     void internalShowContextMenu(const ContextMenuContextData&, const UserData&);
1270 #endif
1271
1272 #if ENABLE(TELEPHONE_NUMBER_DETECTION)
1273 #if PLATFORM(MAC)
1274     void showTelephoneNumberMenu(const String& telephoneNumber, const WebCore::IntPoint&);
1275 #endif
1276 #endif
1277
1278     // Search popup results
1279     void saveRecentSearches(const String&, const Vector<WebCore::RecentSearch>&);
1280     void loadRecentSearches(const String&, Vector<WebCore::RecentSearch>&);
1281
1282 #if PLATFORM(COCOA)
1283     // Speech.
1284     void getIsSpeaking(bool&);
1285     void speak(const String&);
1286     void stopSpeaking();
1287
1288     // Spotlight.
1289     void searchWithSpotlight(const String&);
1290
1291     void searchTheWeb(const String&);
1292
1293     // Dictionary.
1294     void didPerformDictionaryLookup(const WebCore::DictionaryPopupInfo&);
1295 #endif
1296
1297 #if PLATFORM(MAC)
1298     bool appleMailPaginationQuirkEnabled();
1299 #endif
1300
1301     // Spelling and grammar.
1302     void checkSpellingOfString(const String& text, int32_t& misspellingLocation, int32_t& misspellingLength);
1303     void checkGrammarOfString(const String& text, Vector<WebCore::GrammarDetail>&, int32_t& badGrammarLocation, int32_t& badGrammarLength);
1304     void spellingUIIsShowing(bool&);
1305     void updateSpellingUIWithMisspelledWord(const String& misspelledWord);
1306     void updateSpellingUIWithGrammarString(const String& badGrammarPhrase, const WebCore::GrammarDetail&);
1307     void learnWord(const String& word);
1308     void ignoreWord(const String& word);
1309     void requestCheckingOfString(uint64_t requestID, const WebCore::TextCheckingRequestData&);
1310
1311     void setFocus(bool focused);
1312     void takeFocus(uint32_t direction);
1313     void setToolTip(const String&);
1314     void setCursor(const WebCore::Cursor&);
1315     void setCursorHiddenUntilMouseMoves(bool);
1316
1317     void didReceiveEvent(uint32_t opaqueType, bool handled);
1318     void stopResponsivenessTimer();
1319
1320     void voidCallback(uint64_t);
1321     void dataCallback(const IPC::DataReference&, uint64_t);
1322     void imageCallback(const ShareableBitmap::Handle&, uint64_t);
1323     void stringCallback(const String&, uint64_t);
1324     void scriptValueCallback(const IPC::DataReference&, bool hadException, const WebCore::ExceptionDetails&, uint64_t);
1325     void computedPagesCallback(const Vector<WebCore::IntRect>&, double totalScaleFactorForPrinting, uint64_t);
1326     void validateCommandCallback(const String&, bool, int, uint64_t);
1327     void unsignedCallback(uint64_t, uint64_t);
1328     void editingRangeCallback(const EditingRange&, uint64_t);
1329 #if PLATFORM(COCOA)
1330     void machSendRightCallback(const WebCore::MachSendRight&, uint64_t);
1331 #endif
1332     void rectForCharacterRangeCallback(const WebCore::IntRect&, const EditingRange&, uint64_t);
1333 #if PLATFORM(MAC)
1334     void attributedStringForCharacterRangeCallback(const AttributedString&, const EditingRange&, uint64_t);
1335     void fontAtSelectionCallback(const String&, double, bool, uint64_t);
1336 #endif
1337 #if PLATFORM(IOS)
1338     void gestureCallback(const WebCore::IntPoint&, uint32_t, uint32_t, uint32_t, uint64_t);
1339     void touchesCallback(const WebCore::IntPoint&, uint32_t, uint64_t);
1340     void autocorrectionDataCallback(const Vector<WebCore::FloatRect>&, const String&, float, uint64_t, uint64_t);
1341     void autocorrectionContextCallback(const String&, const String&, const String&, const String&, uint64_t, uint64_t, uint64_t);
1342     void dictationContextCallback(const String&, const String&, const String&, uint64_t);
1343     void interpretKeyEvent(const EditorState&, bool isCharEvent, bool& handled);
1344     void showPlaybackTargetPicker(bool hasVideo, const WebCore::IntRect& elementRect);
1345 #endif
1346 #if PLATFORM(GTK)
1347     void printFinishedCallback(const WebCore::ResourceError&, uint64_t);
1348 #endif
1349
1350     void focusedFrameChanged(uint64_t frameID);
1351     void frameSetLargestFrameChanged(uint64_t frameID);
1352
1353     void canAuthenticateAgainstProtectionSpaceInFrame(uint64_t frameID, const WebCore::ProtectionSpace&, bool& canAuthenticate);
1354     void didReceiveAuthenticationChallenge(uint64_t frameID, const WebCore::AuthenticationChallenge&, uint64_t challengeID);
1355
1356     void didFinishLoadingDataForCustomContentProvider(const String& suggestedFilename, const IPC::DataReference&);
1357
1358 #if PLATFORM(COCOA)
1359     void pluginFocusOrWindowFocusChanged(uint64_t pluginComplexTextInputIdentifier, bool pluginHasFocusAndWindowHasFocus);
1360     void setPluginComplexTextInputState(uint64_t pluginComplexTextInputIdentifier, uint64_t complexTextInputState);
1361 #endif
1362
1363     bool maybeInitializeSandboxExtensionHandle(const WebCore::URL&, SandboxExtension::Handle&);
1364
1365 #if PLATFORM(MAC)
1366     void substitutionsPanelIsShowing(bool&);
1367     void showCorrectionPanel(int32_t panelType, const WebCore::FloatRect& boundingBoxOfReplacedString, const String& replacedString, const String& replacementString, const Vector<String>& alternativeReplacementStrings);
1368     void dismissCorrectionPanel(int32_t reason);
1369     void dismissCorrectionPanelSoon(int32_t reason, String& result);
1370     void recordAutocorrectionResponse(int32_t responseType, const String& replacedString, const String& replacementString);
1371
1372 #if USE(DICTATION_ALTERNATIVES)
1373     void showDictationAlternativeUI(const WebCore::FloatRect& boundingBoxOfDictatedText, uint64_t dictationContext);
1374     void removeDictationAlternatives(uint64_t dictationContext);
1375     void dictationAlternatives(uint64_t dictationContext, Vector<String>& result);
1376 #endif
1377 #endif // PLATFORM(MAC)
1378
1379 #if PLATFORM(IOS)
1380     WebCore::FloatSize screenSize();
1381     WebCore::FloatSize availableScreenSize();
1382     float textAutosizingWidth();
1383
1384     void dynamicViewportUpdateChangedTarget(double newTargetScale, const WebCore::FloatPoint& newScrollPosition, uint64_t dynamicViewportSizeUpdateID);
1385     void couldNotRestorePageState();
1386     void restorePageState(const WebCore::FloatRect&, double scale);
1387     void restorePageCenterAndScale(const WebCore::FloatPoint&, double scale);
1388
1389     void didGetTapHighlightGeometries(uint64_t requestID, const WebCore::Color& color, const Vector<WebCore::FloatQuad>& geometries, const WebCore::IntSize& topLeftRadius, const WebCore::IntSize& topRightRadius, const WebCore::IntSize& bottomLeftRadius, const WebCore::IntSize& bottomRightRadius);
1390
1391     void startAssistingNode(const AssistedNodeInformation&, bool userIsInteracting, bool blurPreviousNode, const UserData&);
1392     void stopAssistingNode();
1393
1394     void showInspectorHighlight(const WebCore::Highlight&);
1395     void hideInspectorHighlight();
1396
1397     void showInspectorIndication();
1398     void hideInspectorIndication();
1399
1400     void enableInspectorNodeSearch();
1401     void disableInspectorNodeSearch();
1402 #endif // PLATFORM(IOS)
1403
1404     void clearLoadDependentCallbacks();
1405
1406     void performDragControllerAction(DragControllerAction, WebCore::DragData&, const String& dragStorageName, const SandboxExtension::Handle&, const SandboxExtension::HandleArray&);
1407
1408     void updateBackingStoreDiscardableState();
1409
1410     void setRenderTreeSize(uint64_t treeSize) { m_renderTreeSize = treeSize; }
1411
1412 #if PLUGIN_ARCHITECTURE(X11)
1413     void createPluginContainer(uint64_t& windowID);
1414     void windowedPluginGeometryDidChange(const WebCore::IntRect& frameRect, const WebCore::IntRect& clipRect, uint64_t windowID);
1415     void windowedPluginVisibilityDidChange(bool isVisible, uint64_t windowID);
1416 #endif
1417
1418     void processNextQueuedWheelEvent();
1419     void sendWheelEvent(const WebWheelEvent&);
1420
1421 #if ENABLE(TOUCH_EVENTS)
1422     bool shouldStartTrackingTouchEvents(const WebTouchEvent&) const;
1423 #endif
1424
1425 #if ENABLE(NETSCAPE_PLUGIN_API)
1426     void 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);
1427 #endif
1428
1429 #if USE(QUICK_LOOK)
1430     void didStartLoadForQuickLookDocumentInMainFrame(const String& fileName, const String& uti);
1431     void didFinishLoadForQuickLookDocumentInMainFrame(const QuickLookDocumentData&);
1432 #endif
1433
1434 #if ENABLE(CONTENT_FILTERING)
1435     void contentFilterDidBlockLoadForFrame(const WebCore::ContentFilterUnblockHandler&, uint64_t frameID);
1436 #endif
1437
1438     uint64_t generateNavigationID();
1439
1440     WebPreferencesStore preferencesStore() const;
1441
1442     void dispatchViewStateChange();
1443     void viewDidLeaveWindow();
1444     void viewDidEnterWindow();
1445
1446 #if PLATFORM(MAC)
1447     void didPerformImmediateActionHitTest(const WebHitTestResultData&, bool contentPreventsDefault, const UserData&);
1448 #endif
1449
1450     void useFixedLayoutDidChange(bool useFixedLayout) { m_useFixedLayout = useFixedLayout; }
1451     void fixedLayoutSizeDidChange(WebCore::IntSize fixedLayoutSize) { m_fixedLayoutSize = fixedLayoutSize; }
1452
1453     void imageOrMediaDocumentSizeChanged(const WebCore::IntSize&);
1454 #if ENABLE(VIDEO)
1455 #if USE(GSTREAMER)
1456     void requestInstallMissingMediaPlugins(const String& details, const String& description);
1457 #endif
1458 #endif
1459
1460     void handleAutoFillButtonClick(const UserData&);
1461
1462     void handleMessage(IPC::Connection&, const String& messageName, const UserData& messageBody);
1463     void handleSynchronousMessage(IPC::Connection&, const String& messageName, const UserData& messageBody, UserData& returnUserData);
1464
1465     PageClient& m_pageClient;
1466     Ref<API::PageConfiguration> m_configuration;
1467
1468     std::unique_ptr<API::LoaderClient> m_loaderClient;
1469     std::unique_ptr<API::PolicyClient> m_policyClient;
1470     std::unique_ptr<API::NavigationClient> m_navigationClient;
1471     std::unique_ptr<API::HistoryClient> m_historyClient;
1472     std::unique_ptr<API::FormClient> m_formClient;
1473     std::unique_ptr<API::UIClient> m_uiClient;
1474 #if PLATFORM(EFL)
1475     WebUIPopupMenuClient m_uiPopupMenuClient;
1476 #endif
1477     std::unique_ptr<API::FindClient> m_findClient;
1478     std::unique_ptr<API::FindMatchesClient> m_findMatchesClient;
1479     std::unique_ptr<API::DiagnosticLoggingClient> m_diagnosticLoggingClient;
1480 #if ENABLE(CONTEXT_MENUS)
1481     std::unique_ptr<API::ContextMenuClient> m_contextMenuClient;
1482 #endif
1483     std::unique_ptr<WebPageInjectedBundleClient> m_injectedBundleClient;
1484
1485     std::unique_ptr<WebNavigationState> m_navigationState;
1486     String m_failingProvisionalLoadURL;
1487
1488     std::unique_ptr<DrawingAreaProxy> m_drawingArea;
1489 #if ENABLE(ASYNC_SCROLLING)
1490     std::unique_ptr<RemoteScrollingCoordinatorProxy> m_scrollingCoordinatorProxy;
1491 #endif
1492
1493     Ref<WebProcessProxy> m_process;
1494     Ref<WebPageGroup> m_pageGroup;
1495     Ref<WebPreferences> m_preferences;
1496
1497     WebProcessLifetimeTracker m_webProcessLifetimeTracker { *this };
1498
1499     const RefPtr<WebUserContentControllerProxy> m_userContentController;
1500     Ref<VisitedLinkStore> m_visitedLinkStore;
1501     Ref<WebsiteDataStore> m_websiteDataStore;
1502
1503     RefPtr<WebFrameProxy> m_mainFrame;
1504     RefPtr<WebFrameProxy> m_focusedFrame;
1505     RefPtr<WebFrameProxy> m_frameSetLargestFrame;
1506
1507     String m_userAgent;
1508     String m_applicationNameForUserAgent;
1509     String m_customUserAgent;
1510     String m_customTextEncodingName;
1511
1512     bool m_treatsSHA1CertificatesAsInsecure;
1513
1514     RefPtr<WebInspectorProxy> m_inspector;
1515
1516 #if ENABLE(FULLSCREEN_API)
1517     RefPtr<WebFullScreenManagerProxy> m_fullScreenManager;
1518 #endif
1519 #if PLATFORM(IOS)
1520     RefPtr<WebVideoFullscreenManagerProxy> m_videoFullscreenManager;
1521     VisibleContentRectUpdateInfo m_lastVisibleContentRectUpdate;
1522     bool m_hasReceivedLayerTreeTransactionAfterDidCommitLoad;
1523     uint64_t m_firstLayerTreeTransactionIdAfterDidCommitLoad;
1524     int32_t m_deviceOrientation;
1525     bool m_dynamicViewportSizeUpdateWaitingForTarget;
1526     bool m_dynamicViewportSizeUpdateWaitingForLayerTreeCommit;
1527     uint64_t m_dynamicViewportSizeUpdateLayerTreeTransactionID;
1528     uint64_t m_layerTreeTransactionIdAtLastTouchStart;
1529     uint64_t m_currentDynamicViewportSizeUpdateID { 0 };
1530     bool m_hasNetworkRequestsOnSuspended;
1531 #endif
1532
1533 #if ENABLE(VIBRATION)
1534     RefPtr<WebVibrationProxy> m_vibration;
1535 #endif
1536
1537     CallbackMap m_callbacks;
1538     HashSet<uint64_t> m_loadDependentStringCallbackIDs;
1539
1540     HashSet<WebEditCommandProxy*> m_editCommandSet;
1541
1542 #if PLATFORM(COCOA)
1543     HashSet<String> m_knownKeypressCommandNames;
1544 #endif
1545
1546     RefPtr<WebPopupMenuProxy> m_activePopupMenu;
1547 #if ENABLE(CONTEXT_MENUS)
1548     std::unique_ptr<WebContextMenuProxy> m_activeContextMenu;
1549     ContextMenuContextData m_activeContextMenuContextData;
1550 #endif
1551     RefPtr<API::HitTestResult> m_lastMouseMoveHitTestResult;
1552
1553     RefPtr<WebOpenPanelResultListenerProxy> m_openPanelResultListener;
1554     GeolocationPermissionRequestManagerProxy m_geolocationPermissionRequestManager;
1555     NotificationPermissionRequestManagerProxy m_notificationPermissionRequestManager;
1556
1557     UserMediaPermissionRequestManagerProxy m_userMediaPermissionRequestManager;
1558
1559     WebCore::ViewState::Flags m_viewState;
1560     bool m_viewWasEverInWindow;
1561 #if PLATFORM(IOS)
1562     bool m_allowsMediaDocumentInlinePlayback { false };
1563     bool m_alwaysRunsAtForegroundPriority;
1564     ProcessThrottler::ForegroundActivityToken m_activityToken;
1565 #endif
1566
1567     Ref<WebBackForwardList> m_backForwardList;
1568
1569     bool m_maintainsInactiveSelection;
1570
1571     String m_toolTip;
1572
1573     EditorState m_editorState;
1574     bool m_isEditable;
1575
1576     double m_textZoomFactor;
1577     double m_pageZoomFactor;
1578     double m_pageScaleFactor;
1579     double m_pluginZoomFactor;
1580     double m_pluginScaleFactor;
1581     double m_viewScaleFactor { 1 };
1582     float m_intrinsicDeviceScaleFactor;
1583     float m_customDeviceScaleFactor;
1584     float m_topContentInset;
1585
1586     LayerHostingMode m_layerHostingMode;
1587
1588     bool m_drawsBackground;
1589
1590     WebCore::Color m_underlayColor;
1591     WebCore::Color m_pageExtendedBackgroundColor;
1592
1593     bool m_useFixedLayout;
1594     WebCore::IntSize m_fixedLayoutSize;
1595
1596     bool m_suppressScrollbarAnimations;
1597
1598     WebCore::Pagination::Mode m_paginationMode;
1599     bool m_paginationBehavesLikeColumns;
1600     double m_pageLength;
1601     double m_gapBetweenPages;
1602
1603     // If the process backing the web page is alive and kicking.
1604     bool m_isValid;
1605
1606     // Whether WebPageProxy::close() has been called on this page.
1607     bool m_isClosed;
1608
1609     // Whether it can run modal child web pages.
1610     bool m_canRunModal;
1611
1612     bool m_isInPrintingMode;
1613     bool m_isPerformingDOMPrintOperation;
1614
1615     bool m_inDecidePolicyForResponseSync;
1616     const WebCore::ResourceRequest* m_decidePolicyForResponseRequest;
1617     bool m_syncMimeTypePolicyActionIsValid;
1618     WebCore::PolicyAction m_syncMimeTypePolicyAction;
1619     uint64_t m_syncMimeTypePolicyDownloadID;
1620
1621     bool m_inDecidePolicyForNavigationAction;
1622     bool m_syncNavigationActionPolicyActionIsValid;
1623     WebCore::PolicyAction m_syncNavigationActionPolicyAction;
1624     uint64_t m_syncNavigationActionPolicyDownloadID;
1625     bool m_shouldSuppressAppLinksInNextNavigationPolicyDecision { false };
1626
1627     Deque<NativeWebKeyboardEvent> m_keyEventQueue;
1628     Deque<NativeWebWheelEvent> m_wheelEventQueue;
1629     Deque<std::unique_ptr<Vector<NativeWebWheelEvent>>> m_currentlyProcessedWheelEvents;
1630 #if ENABLE(MAC_GESTURE_EVENTS)
1631     Deque<NativeWebGestureEvent> m_gestureEventQueue;
1632 #endif
1633
1634     bool m_processingMouseMoveEvent;
1635     std::unique_ptr<NativeWebMouseEvent> m_nextMouseMoveEvent;
1636     std::unique_ptr<NativeWebMouseEvent> m_currentlyProcessedMouseDownEvent;
1637
1638 #if ENABLE(TOUCH_EVENTS)
1639     bool m_isTrackingTouchEvents;
1640 #endif
1641 #if ENABLE(TOUCH_EVENTS) && !ENABLE(IOS_TOUCH_EVENTS)
1642     Deque<QueuedTouchEvents> m_touchEventQueue;
1643 #endif
1644
1645 #if ENABLE(INPUT_TYPE_COLOR)
1646     RefPtr<WebColorPicker> m_colorPicker;
1647 #endif
1648
1649     const uint64_t m_pageID;
1650     WebCore::SessionID m_sessionID;
1651
1652     bool m_isPageSuspended;
1653     bool m_addsVisitedLinks;
1654
1655 #if ENABLE(REMOTE_INSPECTOR)
1656     bool m_allowsRemoteInspection;
1657     String m_remoteInspectionNameOverride;
1658 #endif
1659
1660 #if PLATFORM(COCOA)
1661     bool m_isSmartInsertDeleteEnabled;
1662 #endif
1663
1664 #if PLATFORM(GTK)
1665     String m_accessibilityPlugID;
1666     WebCore::Color m_backgroundColor;
1667 #endif
1668
1669     int64_t m_spellDocumentTag;
1670     bool m_hasSpellDocumentTag;
1671     unsigned m_pendingLearnOrIgnoreWordMessageCount;
1672
1673     bool m_mainFrameHasCustomContentProvider;
1674
1675 #if ENABLE(DRAG_SUPPORT)
1676     // Current drag destination details are delivered as an asynchronous response,
1677     // so we preserve them to be used when the next dragging delegate call is made.
1678     WebCore::DragOperation m_currentDragOperation;
1679     bool m_currentDragIsOverFileInput;
1680     unsigned m_currentDragNumberOfFilesToBeAccepted;
1681 #endif
1682
1683     PageLoadState m_pageLoadState;
1684
1685     bool m_delegatesScrolling;
1686
1687     bool m_mainFrameHasHorizontalScrollbar;
1688     bool m_mainFrameHasVerticalScrollbar;
1689
1690     // Whether horizontal wheel events can be handled directly for swiping purposes.
1691     bool m_canShortCircuitHorizontalWheelEvents;
1692
1693     bool m_mainFrameIsPinnedToLeftSide;
1694     bool m_mainFrameIsPinnedToRightSide;
1695     bool m_mainFrameIsPinnedToTopSide;
1696     bool m_mainFrameIsPinnedToBottomSide;
1697
1698     bool m_shouldUseImplicitRubberBandControl;
1699     bool m_rubberBandsAtLeft;
1700     bool m_rubberBandsAtRight;
1701     bool m_rubberBandsAtTop;
1702     bool m_rubberBandsAtBottom;
1703
1704     bool m_enableVerticalRubberBanding;
1705     bool m_enableHorizontalRubberBanding;
1706
1707     bool m_backgroundExtendsBeyondPage;
1708
1709     bool m_shouldRecordNavigationSnapshots;
1710     bool m_isShowingNavigationGestureSnapshot;
1711
1712     bool m_mainFramePluginHandlesPageScaleGesture { false };
1713
1714     unsigned m_pageCount;
1715
1716     WebCore::IntRect m_visibleScrollerThumbRect;
1717
1718     uint64_t m_renderTreeSize;
1719     uint64_t m_sessionRestorationRenderTreeSize;
1720     bool m_wantsSessionRestorationRenderTreeSizeThresholdEvent;
1721     bool m_hitRenderTreeSizeThreshold;
1722
1723     bool m_suppressVisibilityUpdates;
1724     bool m_autoSizingShouldExpandToViewHeight;
1725     WebCore::IntSize m_minimumLayoutSize;
1726
1727     float m_mediaVolume;
1728     bool m_muted;
1729     bool m_mayStartMediaWhenInWindow;
1730
1731     bool m_waitingForDidUpdateViewState;
1732
1733     bool m_shouldScaleViewToFitDocument { false };
1734     bool m_suppressNavigationSnapshotting { false };
1735
1736 #if PLATFORM(COCOA)
1737     HashMap<String, String> m_temporaryPDFFiles;
1738     std::unique_ptr<WebCore::RunLoopObserver> m_viewStateChangeDispatcher;
1739
1740     std::unique_ptr<RemoteLayerTreeScrollingPerformanceData> m_scrollingPerformanceData;
1741     bool m_scrollPerformanceDataCollectionEnabled;
1742 #endif
1743     UserObservablePageToken m_pageIsUserObservableCount;
1744     ProcessSuppressionDisabledToken m_preventProcessSuppressionCount;
1745
1746     WebCore::ScrollPinningBehavior m_scrollPinningBehavior;
1747     WTF::Optional<WebCore::ScrollbarOverlayStyle> m_scrollbarOverlayStyle;
1748
1749     uint64_t m_navigationID;
1750
1751     WebPreferencesStore::ValueMap m_configurationPreferenceValues;
1752     WebCore::ViewState::Flags m_potentiallyChangedViewStateFlags;
1753     bool m_viewStateChangeWantsSynchronousReply;
1754     Vector<uint64_t> m_nextViewStateChangeCallbacks;
1755
1756     WebCore::MediaProducer::MediaStateFlags m_mediaState { WebCore::MediaProducer::IsNotPlaying };
1757
1758 #if ENABLE(MEDIA_SESSION)
1759     bool m_hasMediaSessionWithActiveMediaElements { false };
1760 #endif
1761
1762 #if ENABLE(WIRELESS_PLAYBACK_TARGET) && !PLATFORM(IOS)
1763     bool m_requiresTargetMonitoring { false };
1764 #endif
1765
1766 #if PLATFORM(IOS)
1767     bool m_hasDeferredStartAssistingNode { false };
1768     std::unique_ptr<NodeAssistanceArguments> m_deferredNodeAssistanceArguments;
1769 #endif
1770 };
1771
1772 } // namespace WebKit
1773
1774 #endif // WebPageProxy_h