1/*
2 * Copyright (C) 2006-2018 Apple, Inc. All rights reserved.
3 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
4 * Copyright (C) 2012 Samsung Electronics. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22#pragma once
23
24#include "AXObjectCache.h"
25#include "AutoplayEvent.h"
26#include "Cursor.h"
27#include "DatabaseDetails.h"
28#include "DeviceOrientationOrMotionPermissionState.h"
29#include "DisabledAdaptations.h"
30#include "DisplayRefreshMonitor.h"
31#include "DocumentStorageAccess.h"
32#include "FocusDirection.h"
33#include "FrameLoader.h"
34#include "GraphicsContext.h"
35#include "GraphicsLayer.h"
36#include "HTMLMediaElementEnums.h"
37#include "HostWindow.h"
38#include "Icon.h"
39#include "InputMode.h"
40#include "LayerFlushThrottleState.h"
41#include "MediaProducer.h"
42#include "PopupMenu.h"
43#include "PopupMenuClient.h"
44#include "RegistrableDomain.h"
45#include "RenderEmbeddedObject.h"
46#include "ScrollTypes.h"
47#include "ScrollingCoordinator.h"
48#include "SearchPopupMenu.h"
49#include "WebCoreKeyboardUIMode.h"
50#include <JavaScriptCore/ConsoleTypes.h>
51#include <wtf/Assertions.h>
52#include <wtf/CompletionHandler.h>
53#include <wtf/Forward.h>
54#include <wtf/Seconds.h>
55
56#if ENABLE(WIRELESS_PLAYBACK_TARGET)
57#include "MediaPlaybackTargetContext.h"
58#endif
59
60#if PLATFORM(IOS_FAMILY)
61#include "PlatformLayer.h"
62#define NSResponder WAKResponder
63#ifndef __OBJC__
64class WAKResponder;
65#else
66@class WAKResponder;
67#endif
68#endif
69
70OBJC_CLASS NSResponder;
71
72namespace WebCore {
73
74class AccessibilityObject;
75class ColorChooser;
76class ColorChooserClient;
77class DataListSuggestionPicker;
78class DataListSuggestionsClient;
79class DateTimeChooser;
80class DateTimeChooserClient;
81class Element;
82class FileChooser;
83class FileIconLoader;
84class FloatRect;
85class Frame;
86class FrameLoadRequest;
87class Geolocation;
88class GraphicsLayer;
89class GraphicsLayerFactory;
90class HTMLInputElement;
91class HTMLMediaElement;
92class HTMLVideoElement;
93class HitTestResult;
94class IntRect;
95class MediaSessionMetadata;
96class NavigationAction;
97class Node;
98class Page;
99class PopupMenuClient;
100class SecurityOrigin;
101class ViewportConstraints;
102class Widget;
103
104#if ENABLE(VIDEO) && USE(GSTREAMER)
105class MediaPlayerRequestInstallMissingPluginsCallback;
106#endif
107
108struct ContentRuleListResults;
109struct DateTimeChooserParameters;
110struct GraphicsDeviceAdapter;
111struct ShareDataWithParsedURL;
112struct ViewportArguments;
113struct WindowFeatures;
114
115enum class RouteSharingPolicy : uint8_t;
116
117class WEBCORE_EXPORT ChromeClient {
118public:
119 virtual void chromeDestroyed() = 0;
120
121 virtual void setWindowRect(const FloatRect&) = 0;
122 virtual FloatRect windowRect() = 0;
123
124 virtual FloatRect pageRect() = 0;
125
126 virtual void focus() = 0;
127 virtual void unfocus() = 0;
128
129 virtual bool canTakeFocus(FocusDirection) = 0;
130 virtual void takeFocus(FocusDirection) = 0;
131
132 virtual void focusedElementChanged(Element*) = 0;
133 virtual void focusedFrameChanged(Frame*) = 0;
134
135 // The Frame pointer provides the ChromeClient with context about which
136 // Frame wants to create the new Page. Also, the newly created window
137 // should not be shown to the user until the ChromeClient of the newly
138 // created Page has its show method called.
139 // The FrameLoadRequest parameter is only for ChromeClient to check if the
140 // request could be fulfilled. The ChromeClient should not load the request.
141 virtual Page* createWindow(Frame&, const FrameLoadRequest&, const WindowFeatures&, const NavigationAction&) = 0;
142 virtual void show() = 0;
143
144 virtual bool canRunModal() = 0;
145 virtual void runModal() = 0;
146
147 virtual void setToolbarsVisible(bool) = 0;
148 virtual bool toolbarsVisible() = 0;
149
150 virtual void setStatusbarVisible(bool) = 0;
151 virtual bool statusbarVisible() = 0;
152
153 virtual void setScrollbarsVisible(bool) = 0;
154 virtual bool scrollbarsVisible() = 0;
155
156 virtual void setMenubarVisible(bool) = 0;
157 virtual bool menubarVisible() = 0;
158
159 virtual void setResizable(bool) = 0;
160
161 virtual void addMessageToConsole(MessageSource, MessageLevel, const String& message, unsigned lineNumber, unsigned columnNumber, const String& sourceID) = 0;
162
163 virtual bool canRunBeforeUnloadConfirmPanel() = 0;
164 virtual bool runBeforeUnloadConfirmPanel(const String& message, Frame&) = 0;
165
166 virtual void closeWindowSoon() = 0;
167
168 virtual void runJavaScriptAlert(Frame&, const String&) = 0;
169 virtual bool runJavaScriptConfirm(Frame&, const String&) = 0;
170 virtual bool runJavaScriptPrompt(Frame&, const String& message, const String& defaultValue, String& result) = 0;
171 virtual void setStatusbarText(const String&) = 0;
172 virtual KeyboardUIMode keyboardUIMode() = 0;
173
174 virtual bool supportsImmediateInvalidation() { return false; }
175 virtual void invalidateRootView(const IntRect&) = 0;
176 virtual void invalidateContentsAndRootView(const IntRect&) = 0;
177 virtual void invalidateContentsForSlowScroll(const IntRect&) = 0;
178 virtual void scroll(const IntSize&, const IntRect&, const IntRect&) = 0;
179
180 virtual IntPoint screenToRootView(const IntPoint&) const = 0;
181 virtual IntRect rootViewToScreen(const IntRect&) const = 0;
182 virtual IntPoint accessibilityScreenToRootView(const IntPoint&) const = 0;
183 virtual IntRect rootViewToAccessibilityScreen(const IntRect&) const = 0;
184
185 virtual PlatformPageClient platformPageClient() const = 0;
186
187#if ENABLE(CURSOR_SUPPORT)
188 virtual void setCursor(const Cursor&) = 0;
189 virtual void setCursorHiddenUntilMouseMoves(bool) = 0;
190#endif
191
192 virtual FloatSize screenSize() const { return const_cast<ChromeClient&>(*this).windowRect().size(); }
193 virtual FloatSize availableScreenSize() const { return const_cast<ChromeClient&>(*this).windowRect().size(); }
194 virtual FloatSize overrideScreenSize() const { return const_cast<ChromeClient&>(*this).windowRect().size(); }
195
196 virtual void dispatchDisabledAdaptationsDidChange(const OptionSet<DisabledAdaptations>&) const { }
197 virtual void dispatchViewportPropertiesDidChange(const ViewportArguments&) const { }
198
199 virtual void contentsSizeChanged(Frame&, const IntSize&) const = 0;
200 virtual void intrinsicContentsSizeChanged(const IntSize&) const = 0;
201 virtual void scrollRectIntoView(const IntRect&) const { }; // Currently only Mac has a non empty implementation.
202
203 virtual bool shouldUnavailablePluginMessageBeButton(RenderEmbeddedObject::PluginUnavailabilityReason) const { return false; }
204 virtual void unavailablePluginButtonClicked(Element&, RenderEmbeddedObject::PluginUnavailabilityReason) const { }
205 virtual void mouseDidMoveOverElement(const HitTestResult&, unsigned modifierFlags) = 0;
206
207 virtual void setToolTip(const String&, TextDirection) = 0;
208
209 virtual void print(Frame&) = 0;
210
211 virtual Color underlayColor() const { return Color(); }
212
213 virtual void pageExtendedBackgroundColorDidChange(Color) const { }
214
215 virtual void exceededDatabaseQuota(Frame&, const String& databaseName, DatabaseDetails) = 0;
216
217 // Callback invoked when the application cache fails to save a cache object
218 // because storing it would grow the database file past its defined maximum
219 // size or past the amount of free space on the device.
220 // The chrome client would need to take some action such as evicting some
221 // old caches.
222 virtual void reachedMaxAppCacheSize(int64_t spaceNeeded) = 0;
223
224 // Callback invoked when the application cache origin quota is reached. This
225 // means that the resources attempting to be cached via the manifest are
226 // more than allowed on this origin. This callback allows the chrome client
227 // to take action, such as prompting the user to ask to increase the quota
228 // for this origin. The totalSpaceNeeded parameter is the total amount of
229 // storage, in bytes, needed to store the new cache along with all of the
230 // other existing caches for the origin that would not be replaced by
231 // the new cache.
232 virtual void reachedApplicationCacheOriginQuota(SecurityOrigin&, int64_t totalSpaceNeeded) = 0;
233
234#if ENABLE(DASHBOARD_SUPPORT)
235 virtual void annotatedRegionsChanged();
236#endif
237
238 virtual bool shouldReplaceWithGeneratedFileForUpload(const String& path, String& generatedFilename);
239 virtual String generateReplacementFile(const String& path);
240
241#if ENABLE(IOS_TOUCH_EVENTS)
242 virtual void didPreventDefaultForEvent() = 0;
243#endif
244
245 virtual Seconds eventThrottlingDelay() { return 0_s; };
246
247#if PLATFORM(IOS_FAMILY)
248 virtual void didReceiveMobileDocType(bool) = 0;
249 virtual void setNeedsScrollNotifications(Frame&, bool) = 0;
250 virtual void observedContentChange(Frame&) = 0;
251 virtual void notifyRevealedSelectionByScrollingFrame(Frame&) = 0;
252
253 enum LayoutType { NormalLayout, Scroll };
254 virtual void didLayout(LayoutType = NormalLayout) = 0;
255 virtual void didStartOverflowScroll() = 0;
256 virtual void didEndOverflowScroll() = 0;
257
258 // FIXME: Remove this functionality. This functionality was added to workaround an issue (<rdar://problem/5973875>)
259 // where the unconfirmed text in a text area would be removed when a person clicks in the text area before a
260 // suggestion is shown. We should fix this issue in <rdar://problem/5975559>.
261 virtual void suppressFormNotifications() = 0;
262 virtual void restoreFormNotifications() = 0;
263
264 virtual void didFlushCompositingLayers() { }
265
266 virtual bool fetchCustomFixedPositionLayoutRect(IntRect&) { return false; }
267
268 virtual void updateViewportConstrainedLayers(HashMap<PlatformLayer*, std::unique_ptr<ViewportConstraints>>&, const HashMap<PlatformLayer*, PlatformLayer*>&) { }
269
270 virtual void addOrUpdateScrollingLayer(Node*, PlatformLayer* scrollingLayer, PlatformLayer* contentsLayer, const IntSize& scrollSize, bool allowHorizontalScrollbar, bool allowVerticalScrollbar) = 0;
271 virtual void removeScrollingLayer(Node*, PlatformLayer* scrollingLayer, PlatformLayer* contentsLayer) = 0;
272
273 virtual void webAppOrientationsUpdated() = 0;
274 virtual void showPlaybackTargetPicker(bool hasVideo, RouteSharingPolicy, const String&) = 0;
275#endif
276
277#if ENABLE(ORIENTATION_EVENTS)
278 virtual int deviceOrientation() const = 0;
279#endif
280
281#if ENABLE(INPUT_TYPE_COLOR)
282 virtual std::unique_ptr<ColorChooser> createColorChooser(ColorChooserClient&, const Color&) = 0;
283#endif
284
285#if ENABLE(DATALIST_ELEMENT)
286 virtual std::unique_ptr<DataListSuggestionPicker> createDataListSuggestionPicker(DataListSuggestionsClient&) = 0;
287#endif
288
289 virtual void runOpenPanel(Frame&, FileChooser&) = 0;
290 virtual void showShareSheet(ShareDataWithParsedURL&, WTF::CompletionHandler<void(bool)>&& callback) { callback(false); }
291
292 // Asynchronous request to load an icon for specified filenames.
293 virtual void loadIconForFiles(const Vector<String>&, FileIconLoader&) = 0;
294
295 virtual void elementDidFocus(Element&) { }
296 virtual void elementDidBlur(Element&) { }
297 virtual void elementDidRefocus(Element&) { }
298
299 virtual void focusedElementDidChangeInputMode(Element&, InputMode) { }
300
301 virtual bool shouldPaintEntireContents() const { return false; }
302 virtual bool hasStablePageScaleFactor() const { return true; }
303
304 // Allows ports to customize the type of graphics layers created by this page.
305 virtual GraphicsLayerFactory* graphicsLayerFactory() const { return nullptr; }
306
307#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)
308 virtual RefPtr<DisplayRefreshMonitor> createDisplayRefreshMonitor(PlatformDisplayID) const { return nullptr; }
309#endif
310
311 // Pass nullptr as the GraphicsLayer to detatch the root layer.
312 virtual void attachRootGraphicsLayer(Frame&, GraphicsLayer*) = 0;
313 virtual void attachViewOverlayGraphicsLayer(GraphicsLayer*) = 0;
314 // Sets a flag to specify that the next time content is drawn to the window,
315 // the changes appear on the screen in synchrony with updates to GraphicsLayers.
316 virtual void setNeedsOneShotDrawingSynchronization() = 0;
317 // Sets a flag to specify that the view needs to be updated, so we need
318 // to do an eager layout before the drawing.
319 virtual void scheduleCompositingLayerFlush() = 0;
320 // Returns whether or not the client can render the composited layer,
321 // regardless of the settings.
322 virtual bool allowsAcceleratedCompositing() const { return true; }
323
324 enum CompositingTrigger {
325 ThreeDTransformTrigger = 1 << 0,
326 VideoTrigger = 1 << 1,
327 PluginTrigger = 1 << 2,
328 CanvasTrigger = 1 << 3,
329 AnimationTrigger = 1 << 4,
330 FilterTrigger = 1 << 5,
331 ScrollableNonMainFrameTrigger = 1 << 6,
332 AnimatedOpacityTrigger = 1 << 7,
333 AllTriggers = 0xFFFFFFFF
334 };
335 typedef unsigned CompositingTriggerFlags;
336
337 // Returns a bitfield indicating conditions that can trigger the compositor.
338 virtual CompositingTriggerFlags allowedCompositingTriggers() const { return static_cast<CompositingTriggerFlags>(AllTriggers); }
339
340 // Returns true if layer tree updates are disabled.
341 virtual bool layerTreeStateIsFrozen() const { return false; }
342 virtual bool layerFlushThrottlingIsActive() const { return false; }
343
344 virtual bool adjustLayerFlushThrottling(LayerFlushThrottleState::Flags) { return false; }
345
346 virtual RefPtr<ScrollingCoordinator> createScrollingCoordinator(Page&) const { return nullptr; }
347
348#if PLATFORM(WIN) && USE(AVFOUNDATION)
349 virtual GraphicsDeviceAdapter* graphicsDeviceAdapter() const { return nullptr; }
350#endif
351
352 virtual bool supportsVideoFullscreen(HTMLMediaElementEnums::VideoFullscreenMode) { return false; }
353 virtual bool supportsVideoFullscreenStandby() { return false; }
354
355#if ENABLE(VIDEO)
356 virtual void enterVideoFullscreenForVideoElement(HTMLVideoElement&, HTMLMediaElementEnums::VideoFullscreenMode, bool standby) { UNUSED_PARAM(standby); }
357 virtual void setUpPlaybackControlsManager(HTMLMediaElement&) { }
358 virtual void clearPlaybackControlsManager() { }
359#endif
360
361 virtual void exitVideoFullscreenForVideoElement(HTMLVideoElement&) { }
362 virtual void exitVideoFullscreenToModeWithoutAnimation(HTMLVideoElement&, HTMLMediaElementEnums::VideoFullscreenMode) { }
363 virtual bool requiresFullscreenForVideoPlayback() { return false; }
364
365#if ENABLE(FULLSCREEN_API)
366 virtual bool supportsFullScreenForElement(const Element&, bool) { return false; }
367 virtual void enterFullScreenForElement(Element&) { }
368 virtual void exitFullScreenForElement(Element*) { }
369 virtual void setRootFullScreenLayer(GraphicsLayer*) { }
370#endif
371
372#if USE(COORDINATED_GRAPHICS)
373 virtual IntRect visibleRectForTiledBackingStore() const { return IntRect(); }
374#endif
375
376#if PLATFORM(COCOA)
377 virtual NSResponder *firstResponder() { return nullptr; }
378 virtual void makeFirstResponder(NSResponder *) { }
379 // Focuses on the containing view associated with this page.
380 virtual void makeFirstResponder() { }
381 virtual void assistiveTechnologyMakeFirstResponder() { }
382#endif
383
384#if PLATFORM(IOS_FAMILY)
385 // FIXME: Come up with a more descriptive name for this function and make it platform independent (if possible).
386 virtual bool isStopping() = 0;
387#endif
388
389 virtual void enableSuddenTermination() { }
390 virtual void disableSuddenTermination() { }
391
392 virtual void contentRuleListNotification(const URL&, const ContentRuleListResults&) { };
393
394#if PLATFORM(WIN)
395 virtual void setLastSetCursorToCurrentCursor() = 0;
396 virtual void AXStartFrameLoad() = 0;
397 virtual void AXFinishFrameLoad() = 0;
398#endif
399
400 virtual bool selectItemWritingDirectionIsNatural() = 0;
401 virtual bool selectItemAlignmentFollowsMenuWritingDirection() = 0;
402 // Checks if there is an opened popup, called by RenderMenuList::showPopup().
403 virtual RefPtr<PopupMenu> createPopupMenu(PopupMenuClient&) const = 0;
404 virtual RefPtr<SearchPopupMenu> createSearchPopupMenu(PopupMenuClient&) const = 0;
405
406 virtual void postAccessibilityNotification(AccessibilityObject&, AXObjectCache::AXNotification) { }
407
408 virtual void notifyScrollerThumbIsVisibleInRect(const IntRect&) { }
409 virtual void recommendedScrollbarStyleDidChange(ScrollbarStyle) { }
410
411 virtual Optional<ScrollbarOverlayStyle> preferredScrollbarOverlayStyle() { return WTF::nullopt; }
412
413 virtual void wheelEventHandlersChanged(bool hasHandlers) = 0;
414
415 virtual bool isSVGImageChromeClient() const { return false; }
416
417#if ENABLE(POINTER_LOCK)
418 virtual bool requestPointerLock() { return false; }
419 virtual void requestPointerUnlock() { }
420#endif
421
422 virtual FloatSize minimumWindowSize() const { return FloatSize(100, 100); };
423
424 virtual bool isEmptyChromeClient() const { return false; }
425
426 virtual String plugInStartLabelTitle(const String& mimeType) const { UNUSED_PARAM(mimeType); return String(); }
427 virtual String plugInStartLabelSubtitle(const String& mimeType) const { UNUSED_PARAM(mimeType); return String(); }
428 virtual String plugInExtraStyleSheet() const { return String(); }
429 virtual String plugInExtraScript() const { return String(); }
430
431 virtual void didAssociateFormControls(const Vector<RefPtr<Element>>&, Frame&) { };
432 virtual bool shouldNotifyOnFormChanges() { return false; };
433
434 virtual void didAddHeaderLayer(GraphicsLayer&) { }
435 virtual void didAddFooterLayer(GraphicsLayer&) { }
436
437 virtual bool shouldUseTiledBackingForFrameView(const FrameView&) const { return false; }
438
439 virtual void isPlayingMediaDidChange(MediaProducer::MediaStateFlags, uint64_t) { }
440 virtual void handleAutoplayEvent(AutoplayEvent, OptionSet<AutoplayEventFlags>) { }
441
442#if ENABLE(MEDIA_SESSION)
443 virtual void hasMediaSessionWithActiveMediaElementsDidChange(bool) { }
444 virtual void mediaSessionMetadataDidChange(const MediaSessionMetadata&) { }
445 virtual void focusedContentMediaElementDidChange(uint64_t) { }
446#endif
447
448#if ENABLE(WEB_CRYPTO)
449 virtual bool wrapCryptoKey(const Vector<uint8_t>&, Vector<uint8_t>&) const { return false; }
450 virtual bool unwrapCryptoKey(const Vector<uint8_t>&, Vector<uint8_t>&) const { return false; }
451#endif
452
453#if ENABLE(TELEPHONE_NUMBER_DETECTION) && PLATFORM(MAC)
454 virtual void handleTelephoneNumberClick(const String&, const IntPoint&) { }
455#endif
456
457#if ENABLE(SERVICE_CONTROLS)
458 virtual void handleSelectionServiceClick(FrameSelection&, const Vector<String>&, const IntPoint&) { }
459 virtual bool hasRelevantSelectionServices(bool /*isTextOnly*/) const { return false; }
460#endif
461
462 virtual bool shouldDispatchFakeMouseMoveEvents() const { return true; }
463
464 virtual void handleAutoFillButtonClick(HTMLInputElement&) { }
465
466 virtual void inputElementDidResignStrongPasswordAppearance(HTMLInputElement&) { };
467
468#if ENABLE(WIRELESS_PLAYBACK_TARGET)
469 virtual void addPlaybackTargetPickerClient(uint64_t /*contextId*/) { }
470 virtual void removePlaybackTargetPickerClient(uint64_t /*contextId*/) { }
471 virtual void showPlaybackTargetPicker(uint64_t /*contextId*/, const IntPoint&, bool /*isVideo*/) { }
472 virtual void playbackTargetPickerClientStateDidChange(uint64_t /*contextId*/, MediaProducer::MediaStateFlags) { }
473 virtual void setMockMediaPlaybackTargetPickerEnabled(bool) { }
474 virtual void setMockMediaPlaybackTargetPickerState(const String&, MediaPlaybackTargetContext::State) { }
475#endif
476
477 virtual void imageOrMediaDocumentSizeChanged(const IntSize&) { }
478
479#if ENABLE(VIDEO) && USE(GSTREAMER)
480 virtual void requestInstallMissingMediaPlugins(const String& /*details*/, const String& /*description*/, MediaPlayerRequestInstallMissingPluginsCallback&) { }
481#endif
482
483 virtual void didInvalidateDocumentMarkerRects() { }
484
485 virtual void reportProcessCPUTime(Seconds, ActivityStateForCPUSampling) { }
486 virtual RefPtr<Icon> createIconForFiles(const Vector<String>& /* filenames */) = 0;
487
488#if ENABLE(RESOURCE_LOAD_STATISTICS)
489 virtual void hasStorageAccess(RegistrableDomain&& /*subFrameDomain*/, RegistrableDomain&& /*topFrameDomain*/, uint64_t /*frameID*/, uint64_t /*pageID*/, WTF::CompletionHandler<void(bool)>&& completionHandler) { completionHandler(false); }
490 virtual void requestStorageAccess(RegistrableDomain&& /*subFrameDomain*/, RegistrableDomain&& /*topFrameDomain*/, uint64_t /*frameID*/, uint64_t /*pageID*/, WTF::CompletionHandler<void(StorageAccessWasGranted, StorageAccessPromptWasShown)>&& completionHandler) { completionHandler(StorageAccessWasGranted::No, StorageAccessPromptWasShown::No); }
491#endif
492
493#if ENABLE(DEVICE_ORIENTATION)
494 virtual void shouldAllowDeviceOrientationAndMotionAccess(Frame&, bool /* mayPrompt */, WTF::CompletionHandler<void(DeviceOrientationOrMotionPermissionState)>&& callback) { callback(DeviceOrientationOrMotionPermissionState::Denied); }
495#endif
496
497 virtual void didInsertMenuElement(HTMLMenuElement&) { }
498 virtual void didRemoveMenuElement(HTMLMenuElement&) { }
499 virtual void didInsertMenuItemElement(HTMLMenuItemElement&) { }
500 virtual void didRemoveMenuItemElement(HTMLMenuItemElement&) { }
501
502 virtual String signedPublicKeyAndChallengeString(unsigned, const String&, const URL&) const { return emptyString(); }
503
504 virtual void associateEditableImageWithAttachment(GraphicsLayer::EmbeddedViewID, const String&) { }
505 virtual void didCreateEditableImage(GraphicsLayer::EmbeddedViewID) { }
506 virtual void didDestroyEditableImage(GraphicsLayer::EmbeddedViewID) { }
507
508 virtual void configureLoggingChannel(const String&, WTFLogChannelState, WTFLogLevel) { }
509
510 virtual bool userIsInteracting() const { return false; }
511 virtual void setUserIsInteracting(bool) { }
512
513protected:
514 virtual ~ChromeClient() = default;
515};
516
517} // namespace WebCore
518