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/*
* Copyright (C) 2006-2018 Apple, Inc. All rights reserved.
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
* Copyright (C) 2012 Samsung Electronics. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#include "AXObjectCache.h"
#include "AutoplayEvent.h"
#include "Cursor.h"
#include "DatabaseDetails.h"
#include "DisplayRefreshMonitor.h"
#include "FocusDirection.h"
#include "FrameLoader.h"
#include "GraphicsContext.h"
#include "HTMLMediaElementEnums.h"
#include "HostWindow.h"
#include "Icon.h"
#include "LayerFlushThrottleState.h"
#include "MediaProducer.h"
#include "PopupMenu.h"
#include "PopupMenuClient.h"
#include "RenderEmbeddedObject.h"
#include "ScrollTypes.h"
#include "ScrollingCoordinator.h"
#include "SearchPopupMenu.h"
#include "WebCoreKeyboardUIMode.h"
#include <JavaScriptCore/ConsoleTypes.h>
#include <wtf/CompletionHandler.h>
#include <wtf/Forward.h>
#include <wtf/Seconds.h>
#if ENABLE(WIRELESS_PLAYBACK_TARGET)
#include "MediaPlaybackTargetContext.h"
#endif
#if PLATFORM(IOS)
#include "PlatformLayer.h"
#define NSResponder WAKResponder
#ifndef __OBJC__
class WAKResponder;
#else
@class WAKResponder;
#endif
#endif
OBJC_CLASS NSResponder;
namespace WebCore {
class AccessibilityObject;
class ColorChooser;
class ColorChooserClient;
class DateTimeChooser;
class DateTimeChooserClient;
class Element;
class FileChooser;
class FileIconLoader;
class FloatRect;
class Frame;
class FrameLoadRequest;
class Geolocation;
class GraphicsLayer;
class GraphicsLayerFactory;
class HTMLInputElement;
class HTMLMediaElement;
class HTMLVideoElement;
class HitTestResult;
class IntRect;
class MediaSessionMetadata;
class NavigationAction;
class Node;
class Page;
class PopupMenuClient;
class SecurityOrigin;
class ViewportConstraints;
class Widget;
#if ENABLE(VIDEO) && USE(GSTREAMER)
class MediaPlayerRequestInstallMissingPluginsCallback;
#endif
struct DateTimeChooserParameters;
struct GraphicsDeviceAdapter;
struct ViewportArguments;
struct WindowFeatures;
class WEBCORE_EXPORT ChromeClient {
public:
virtual void chromeDestroyed() = 0;
virtual void setWindowRect(const FloatRect&) = 0;
virtual FloatRect windowRect() = 0;
virtual FloatRect pageRect() = 0;
virtual void focus() = 0;
virtual void unfocus() = 0;
virtual bool canTakeFocus(FocusDirection) = 0;
virtual void takeFocus(FocusDirection) = 0;
virtual void focusedElementChanged(Element*) = 0;
virtual void focusedFrameChanged(Frame*) = 0;
// The Frame pointer provides the ChromeClient with context about which
// Frame wants to create the new Page. Also, the newly created window
// should not be shown to the user until the ChromeClient of the newly
// created Page has its show method called.
// The FrameLoadRequest parameter is only for ChromeClient to check if the
// request could be fulfilled. The ChromeClient should not load the request.
virtual Page* createWindow(Frame&, const FrameLoadRequest&, const WindowFeatures&, const NavigationAction&) = 0;
virtual void show() = 0;
virtual bool canRunModal() = 0;
virtual void runModal() = 0;
virtual void setToolbarsVisible(bool) = 0;
virtual bool toolbarsVisible() = 0;
virtual void setStatusbarVisible(bool) = 0;
virtual bool statusbarVisible() = 0;
virtual void setScrollbarsVisible(bool) = 0;
virtual bool scrollbarsVisible() = 0;
virtual void setMenubarVisible(bool) = 0;
virtual bool menubarVisible() = 0;
virtual void setResizable(bool) = 0;
virtual void addMessageToConsole(MessageSource, MessageLevel, const String& message, unsigned lineNumber, unsigned columnNumber, const String& sourceID) = 0;
virtual bool canRunBeforeUnloadConfirmPanel() = 0;
virtual bool runBeforeUnloadConfirmPanel(const String& message, Frame&) = 0;
virtual void closeWindowSoon() = 0;
virtual void runJavaScriptAlert(Frame&, const String&) = 0;
virtual bool runJavaScriptConfirm(Frame&, const String&) = 0;
virtual bool runJavaScriptPrompt(Frame&, const String& message, const String& defaultValue, String& result) = 0;
virtual void setStatusbarText(const String&) = 0;
virtual KeyboardUIMode keyboardUIMode() = 0;
virtual bool supportsImmediateInvalidation() { return false; }
virtual void invalidateRootView(const IntRect&) = 0;
virtual void invalidateContentsAndRootView(const IntRect&) = 0;
virtual void invalidateContentsForSlowScroll(const IntRect&) = 0;
virtual void scroll(const IntSize&, const IntRect&, const IntRect&) = 0;
virtual IntPoint screenToRootView(const IntPoint&) const = 0;
virtual IntRect rootViewToScreen(const IntRect&) const = 0;
#if PLATFORM(IOS)
virtual IntPoint accessibilityScreenToRootView(const IntPoint&) const = 0;
virtual IntRect rootViewToAccessibilityScreen(const IntRect&) const = 0;
#endif
virtual PlatformPageClient platformPageClient() const = 0;
#if ENABLE(CURSOR_SUPPORT)
virtual void setCursor(const Cursor&) = 0;
virtual void setCursorHiddenUntilMouseMoves(bool) = 0;
#endif
virtual FloatSize screenSize() const { return const_cast<ChromeClient&>(*this).windowRect().size(); }
virtual FloatSize availableScreenSize() const { return const_cast<ChromeClient&>(*this).windowRect().size(); }
virtual FloatSize overrideScreenSize() const { return const_cast<ChromeClient&>(*this).windowRect().size(); }
virtual void dispatchViewportPropertiesDidChange(const ViewportArguments&) const { }
virtual void contentsSizeChanged(Frame&, const IntSize&) const = 0;
virtual void scrollRectIntoView(const IntRect&) const { }; // Currently only Mac has a non empty implementation.
virtual bool shouldUnavailablePluginMessageBeButton(RenderEmbeddedObject::PluginUnavailabilityReason) const { return false; }
virtual void unavailablePluginButtonClicked(Element&, RenderEmbeddedObject::PluginUnavailabilityReason) const { }
virtual void mouseDidMoveOverElement(const HitTestResult&, unsigned modifierFlags) = 0;
virtual void setToolTip(const String&, TextDirection) = 0;
virtual void print(Frame&) = 0;
virtual Color underlayColor() const { return Color(); }
virtual void pageExtendedBackgroundColorDidChange(Color) const { }
virtual void exceededDatabaseQuota(Frame&, const String& databaseName, DatabaseDetails) = 0;
// Callback invoked when the application cache fails to save a cache object
// because storing it would grow the database file past its defined maximum
// size or past the amount of free space on the device.
// The chrome client would need to take some action such as evicting some
// old caches.
virtual void reachedMaxAppCacheSize(int64_t spaceNeeded) = 0;
// Callback invoked when the application cache origin quota is reached. This
// means that the resources attempting to be cached via the manifest are
// more than allowed on this origin. This callback allows the chrome client
// to take action, such as prompting the user to ask to increase the quota
// for this origin. The totalSpaceNeeded parameter is the total amount of
// storage, in bytes, needed to store the new cache along with all of the
// other existing caches for the origin that would not be replaced by
// the new cache.
virtual void reachedApplicationCacheOriginQuota(SecurityOrigin&, int64_t totalSpaceNeeded) = 0;
#if ENABLE(DASHBOARD_SUPPORT)
virtual void annotatedRegionsChanged();
#endif
virtual bool shouldReplaceWithGeneratedFileForUpload(const String& path, String& generatedFilename);
virtual String generateReplacementFile(const String& path);
#if ENABLE(IOS_TOUCH_EVENTS)
virtual void didPreventDefaultForEvent() = 0;
#endif
virtual Seconds eventThrottlingDelay() { return 0_s; };
#if PLATFORM(IOS)
virtual void didReceiveMobileDocType(bool) = 0;
virtual void setNeedsScrollNotifications(Frame&, bool) = 0;
virtual void observedContentChange(Frame&) = 0;
virtual void clearContentChangeObservers(Frame&) = 0;
virtual void notifyRevealedSelectionByScrollingFrame(Frame&) = 0;
enum LayoutType { NormalLayout, Scroll };
virtual void didLayout(LayoutType = NormalLayout) = 0;
virtual void didStartOverflowScroll() = 0;
virtual void didEndOverflowScroll() = 0;
// FIXME: Remove this functionality. This functionality was added to workaround an issue (<rdar://problem/5973875>)
// where the unconfirmed text in a text area would be removed when a person clicks in the text area before a
// suggestion is shown. We should fix this issue in <rdar://problem/5975559>.
virtual void suppressFormNotifications() = 0;
virtual void restoreFormNotifications() = 0;
virtual void didFlushCompositingLayers() { }
virtual bool fetchCustomFixedPositionLayoutRect(IntRect&) { return false; }
virtual void updateViewportConstrainedLayers(HashMap<PlatformLayer*, std::unique_ptr<ViewportConstraints>>&, HashMap<PlatformLayer*, PlatformLayer*>&) { }
virtual void addOrUpdateScrollingLayer(Node*, PlatformLayer* scrollingLayer, PlatformLayer* contentsLayer, const IntSize& scrollSize, bool allowHorizontalScrollbar, bool allowVerticalScrollbar) = 0;
virtual void removeScrollingLayer(Node*, PlatformLayer* scrollingLayer, PlatformLayer* contentsLayer) = 0;
virtual void webAppOrientationsUpdated() = 0;
virtual void showPlaybackTargetPicker(bool hasVideo) = 0;
#endif
#if ENABLE(ORIENTATION_EVENTS)
virtual int deviceOrientation() const = 0;
#endif
#if ENABLE(INPUT_TYPE_COLOR)
virtual std::unique_ptr<ColorChooser> createColorChooser(ColorChooserClient&, const Color&) = 0;
#endif
virtual void runOpenPanel(Frame&, FileChooser&) = 0;
// Asynchronous request to load an icon for specified filenames.
virtual void loadIconForFiles(const Vector<String>&, FileIconLoader&) = 0;
virtual void elementDidFocus(Element&) { }
virtual void elementDidBlur(Element&) { }
virtual void elementDidRefocus(Element&) { }
virtual bool shouldPaintEntireContents() const { return false; }
virtual bool hasStablePageScaleFactor() const { return true; }
// Allows ports to customize the type of graphics layers created by this page.
virtual GraphicsLayerFactory* graphicsLayerFactory() const { return nullptr; }
#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)
virtual RefPtr<DisplayRefreshMonitor> createDisplayRefreshMonitor(PlatformDisplayID) const { return nullptr; }
#endif
// Pass nullptr as the GraphicsLayer to detatch the root layer.
virtual void attachRootGraphicsLayer(Frame&, GraphicsLayer*) = 0;
virtual void attachViewOverlayGraphicsLayer(Frame&, GraphicsLayer*) = 0;
// Sets a flag to specify that the next time content is drawn to the window,
// the changes appear on the screen in synchrony with updates to GraphicsLayers.
virtual void setNeedsOneShotDrawingSynchronization() = 0;
// Sets a flag to specify that the view needs to be updated, so we need
// to do an eager layout before the drawing.
virtual void scheduleCompositingLayerFlush() = 0;
// Returns whether or not the client can render the composited layer,
// regardless of the settings.
virtual bool allowsAcceleratedCompositing() const { return true; }
enum CompositingTrigger {
ThreeDTransformTrigger = 1 << 0,
VideoTrigger = 1 << 1,
PluginTrigger = 1 << 2,
CanvasTrigger = 1 << 3,
AnimationTrigger = 1 << 4,
FilterTrigger = 1 << 5,
ScrollableNonMainFrameTrigger = 1 << 6,
AnimatedOpacityTrigger = 1 << 7,
AllTriggers = 0xFFFFFFFF
};
typedef unsigned CompositingTriggerFlags;
// Returns a bitfield indicating conditions that can trigger the compositor.
virtual CompositingTriggerFlags allowedCompositingTriggers() const { return static_cast<CompositingTriggerFlags>(AllTriggers); }
// Returns true if layer tree updates are disabled.
virtual bool layerTreeStateIsFrozen() const { return false; }
virtual bool adjustLayerFlushThrottling(LayerFlushThrottleState::Flags) { return false; }
virtual RefPtr<ScrollingCoordinator> createScrollingCoordinator(Page&) const { return nullptr; }
#if PLATFORM(WIN) && USE(AVFOUNDATION)
virtual GraphicsDeviceAdapter* graphicsDeviceAdapter() const { return nullptr; }
#endif
virtual bool supportsVideoFullscreen(HTMLMediaElementEnums::VideoFullscreenMode) { return false; }
virtual bool supportsVideoFullscreenStandby() { return false; }
#if ENABLE(VIDEO)
virtual void enterVideoFullscreenForVideoElement(HTMLVideoElement&, HTMLMediaElementEnums::VideoFullscreenMode, bool standby) { UNUSED_PARAM(standby); }
virtual void setUpPlaybackControlsManager(HTMLMediaElement&) { }
virtual void clearPlaybackControlsManager() { }
#endif
virtual void exitVideoFullscreenForVideoElement(HTMLVideoElement&) { }
virtual void exitVideoFullscreenToModeWithoutAnimation(HTMLVideoElement&, HTMLMediaElementEnums::VideoFullscreenMode) { }
virtual bool requiresFullscreenForVideoPlayback() { return false; }
#if ENABLE(FULLSCREEN_API)
virtual bool supportsFullScreenForElement(const Element&, bool) { return false; }
virtual void enterFullScreenForElement(Element&) { }
virtual void exitFullScreenForElement(Element*) { }
virtual void setRootFullScreenLayer(GraphicsLayer*) { }
#endif
#if USE(COORDINATED_GRAPHICS)
virtual IntRect visibleRectForTiledBackingStore() const { return IntRect(); }
#endif
#if PLATFORM(COCOA)
virtual NSResponder *firstResponder() { return nullptr; }
virtual void makeFirstResponder(NSResponder *) { }
// Focuses on the containing view associated with this page.
virtual void makeFirstResponder() { }
virtual void assistiveTechnologyMakeFirstResponder() { }
#endif
#if PLATFORM(IOS)
// FIXME: Come up with a more descriptive name for this function and make it platform independent (if possible).
virtual bool isStopping() = 0;
#endif
virtual void enableSuddenTermination() { }
virtual void disableSuddenTermination() { }
virtual void contentRuleListNotification(const WebCore::URL&, const HashSet<std::pair<String, String>>&) { };
#if PLATFORM(WIN)
virtual void setLastSetCursorToCurrentCursor() = 0;
virtual void AXStartFrameLoad() = 0;
virtual void AXFinishFrameLoad() = 0;
#endif
virtual bool selectItemWritingDirectionIsNatural() = 0;
virtual bool selectItemAlignmentFollowsMenuWritingDirection() = 0;
// Checks if there is an opened popup, called by RenderMenuList::showPopup().
virtual RefPtr<PopupMenu> createPopupMenu(PopupMenuClient&) const = 0;
virtual RefPtr<SearchPopupMenu> createSearchPopupMenu(PopupMenuClient&) const = 0;
virtual void postAccessibilityNotification(AccessibilityObject&, AXObjectCache::AXNotification) { }
virtual void notifyScrollerThumbIsVisibleInRect(const IntRect&) { }
virtual void recommendedScrollbarStyleDidChange(ScrollbarStyle) { }
virtual std::optional<ScrollbarOverlayStyle> preferredScrollbarOverlayStyle() { return ScrollbarOverlayStyleDefault; }
virtual void wheelEventHandlersChanged(bool hasHandlers) = 0;
virtual bool isSVGImageChromeClient() const { return false; }
#if ENABLE(POINTER_LOCK)
virtual bool requestPointerLock() { return false; }
virtual void requestPointerUnlock() { }
#endif
virtual FloatSize minimumWindowSize() const { return FloatSize(100, 100); };
virtual bool isEmptyChromeClient() const { return false; }
virtual String plugInStartLabelTitle(const String& mimeType) const { UNUSED_PARAM(mimeType); return String(); }
virtual String plugInStartLabelSubtitle(const String& mimeType) const { UNUSED_PARAM(mimeType); return String(); }
virtual String plugInExtraStyleSheet() const { return String(); }
virtual String plugInExtraScript() const { return String(); }
virtual void didAssociateFormControls(const Vector<RefPtr<Element>>&) { };
virtual bool shouldNotifyOnFormChanges() { return false; };
virtual void didAddHeaderLayer(GraphicsLayer&) { }
virtual void didAddFooterLayer(GraphicsLayer&) { }
virtual bool shouldUseTiledBackingForFrameView(const FrameView&) const { return false; }
virtual void isPlayingMediaDidChange(MediaProducer::MediaStateFlags, uint64_t) { }
virtual void handleAutoplayEvent(AutoplayEvent, OptionSet<AutoplayEventFlags>) { }
#if ENABLE(MEDIA_SESSION)
virtual void hasMediaSessionWithActiveMediaElementsDidChange(bool) { }
virtual void mediaSessionMetadataDidChange(const MediaSessionMetadata&) { }
virtual void focusedContentMediaElementDidChange(uint64_t) { }
#endif
#if ENABLE(SUBTLE_CRYPTO)
virtual bool wrapCryptoKey(const Vector<uint8_t>&, Vector<uint8_t>&) const { return false; }
virtual bool unwrapCryptoKey(const Vector<uint8_t>&, Vector<uint8_t>&) const { return false; }
#endif
#if ENABLE(TELEPHONE_NUMBER_DETECTION) && PLATFORM(MAC)
virtual void handleTelephoneNumberClick(const String&, const IntPoint&) { }
#endif
#if ENABLE(SERVICE_CONTROLS)
virtual void handleSelectionServiceClick(FrameSelection&, const Vector<String>&, const IntPoint&) { }
virtual bool hasRelevantSelectionServices(bool /*isTextOnly*/) const { return false; }
#endif
virtual bool shouldDispatchFakeMouseMoveEvents() const { return true; }
virtual void handleAutoFillButtonClick(HTMLInputElement&) { }
virtual void inputElementDidResignStrongPasswordAppearance(HTMLInputElement&) { };
#if ENABLE(WIRELESS_PLAYBACK_TARGET)
virtual void addPlaybackTargetPickerClient(uint64_t /*contextId*/) { }
virtual void removePlaybackTargetPickerClient(uint64_t /*contextId*/) { }
virtual void showPlaybackTargetPicker(uint64_t /*contextId*/, const IntPoint&, bool /*isVideo*/) { }
virtual void playbackTargetPickerClientStateDidChange(uint64_t /*contextId*/, MediaProducer::MediaStateFlags) { }
virtual void setMockMediaPlaybackTargetPickerEnabled(bool) { }
virtual void setMockMediaPlaybackTargetPickerState(const String&, MediaPlaybackTargetContext::State) { }
#endif
virtual void imageOrMediaDocumentSizeChanged(const IntSize&) { }
#if ENABLE(VIDEO) && USE(GSTREAMER)
virtual void requestInstallMissingMediaPlugins(const String& /*details*/, const String& /*description*/, MediaPlayerRequestInstallMissingPluginsCallback&) { }
#endif
virtual void didInvalidateDocumentMarkerRects() { }
virtual void reportProcessCPUTime(Seconds, ActivityStateForCPUSampling) { }
virtual RefPtr<Icon> createIconForFiles(const Vector<String>& /* filenames */) = 0;
virtual void hasStorageAccess(String&& /*subFrameHost*/, String&& /*topFrameHost*/, uint64_t /*frameID*/, uint64_t /*pageID*/, WTF::CompletionHandler<void (bool)>&& callback) { callback(false); }
virtual void requestStorageAccess(String&& /*subFrameHost*/, String&& /*topFrameHost*/, uint64_t /*frameID*/, uint64_t /*pageID*/, WTF::CompletionHandler<void (bool)>&& callback) { callback(false); }
virtual void didInsertMenuElement(HTMLMenuElement&) { }
virtual void didRemoveMenuElement(HTMLMenuElement&) { }
virtual void didInsertMenuItemElement(HTMLMenuItemElement&) { }
virtual void didRemoveMenuItemElement(HTMLMenuItemElement&) { }
virtual void testIncomingSyncIPCMessageWhileWaitingForSyncReply() { }
virtual String signedPublicKeyAndChallengeString(unsigned, const String&, const URL&) const { return emptyString(); }
protected:
virtual ~ChromeClient() = default;
};
} // namespace WebCore