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WebPageIOS.mm
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/*
* Copyright (C) 2012-2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "config.h"
#import "WebPage.h"
#if PLATFORM(IOS_FAMILY)
#import "AccessibilityIOS.h"
#import "DataReference.h"
#import "DocumentEditingContext.h"
#import "DrawingArea.h"
#import "EditingRange.h"
#import "EditorState.h"
#import "GestureTypes.h"
#import "InteractionInformationAtPosition.h"
#import "Logging.h"
#import "NativeWebKeyboardEvent.h"
#import "PluginView.h"
#import "PrintInfo.h"
#import "RemoteLayerTreeDrawingArea.h"
#import "SandboxUtilities.h"
#import "SharedMemory.h"
#import "SyntheticEditingCommandType.h"
#import "TextCheckingControllerProxy.h"
#import "UIKitSPI.h"
#import "UserData.h"
#import "ViewGestureGeometryCollector.h"
#import "VisibleContentRectUpdateInfo.h"
#import "WKAccessibilityWebPageObjectIOS.h"
#import "WebAutocorrectionContext.h"
#import "WebAutocorrectionData.h"
#import "WebChromeClient.h"
#import "WebCoreArgumentCoders.h"
#import "WebFrame.h"
#import "WebImage.h"
#import "WebPageMessages.h"
#import "WebPageProxyMessages.h"
#import "WebPreviewLoaderClient.h"
#import "WebProcess.h"
#import <CoreText/CTFont.h>
#import <WebCore/Autofill.h>
#import <WebCore/AutofillElements.h>
#import <WebCore/Chrome.h>
#import <WebCore/ContentChangeObserver.h>
#import <WebCore/DOMTimerHoldingTank.h>
#import <WebCore/DataDetection.h>
#import <WebCore/DiagnosticLoggingClient.h>
#import <WebCore/DiagnosticLoggingKeys.h>
#import <WebCore/DocumentLoader.h>
#import <WebCore/DragController.h>
#import <WebCore/Editing.h>
#import <WebCore/Editor.h>
#import <WebCore/Element.h>
#import <WebCore/ElementAncestorIterator.h>
#import <WebCore/EventHandler.h>
#import <WebCore/File.h>
#import <WebCore/FloatQuad.h>
#import <WebCore/FocusController.h>
#import <WebCore/Frame.h>
#import <WebCore/FrameLoaderClient.h>
#import <WebCore/FrameView.h>
#import <WebCore/GeometryUtilities.h>
#import <WebCore/HTMLAreaElement.h>
#import <WebCore/HTMLAttachmentElement.h>
#import <WebCore/HTMLBodyElement.h>
#import <WebCore/HTMLElement.h>
#import <WebCore/HTMLElementTypeHelpers.h>
#import <WebCore/HTMLFormElement.h>
#import <WebCore/HTMLIFrameElement.h>
#import <WebCore/HTMLImageElement.h>
#import <WebCore/HTMLInputElement.h>
#import <WebCore/HTMLLabelElement.h>
#import <WebCore/HTMLOptGroupElement.h>
#import <WebCore/HTMLOptionElement.h>
#import <WebCore/HTMLParserIdioms.h>
#import <WebCore/HTMLSelectElement.h>
#import <WebCore/HTMLSummaryElement.h>
#import <WebCore/HTMLTextAreaElement.h>
#import <WebCore/HTMLTextFormControlElement.h>
#import <WebCore/HistoryItem.h>
#import <WebCore/HitTestResult.h>
#import <WebCore/InputMode.h>
#import <WebCore/KeyboardEvent.h>
#import <WebCore/LibWebRTCProvider.h>
#import <WebCore/MediaSessionManagerIOS.h>
#import <WebCore/Node.h>
#import <WebCore/NodeList.h>
#import <WebCore/NotImplemented.h>
#import <WebCore/Page.h>
#import <WebCore/Pasteboard.h>
#import <WebCore/PlatformKeyboardEvent.h>
#import <WebCore/PlatformMouseEvent.h>
#import <WebCore/PointerCaptureController.h>
#import <WebCore/Quirks.h>
#import <WebCore/RenderBlock.h>
#import <WebCore/RenderImage.h>
#import <WebCore/RenderThemeIOS.h>
#import <WebCore/RenderView.h>
#import <WebCore/RuntimeApplicationChecks.h>
#import <WebCore/Settings.h>
#import <WebCore/ShadowRoot.h>
#import <WebCore/SharedBuffer.h>
#import <WebCore/StyleProperties.h>
#import <WebCore/TextIndicator.h>
#import <WebCore/TextIterator.h>
#import <WebCore/UserAgent.h>
#import <WebCore/VisibleUnits.h>
#import <WebCore/WebEvent.h>
#import <wtf/MathExtras.h>
#import <wtf/MemoryPressureHandler.h>
#import <wtf/SetForScope.h>
#import <wtf/SoftLinking.h>
#import <wtf/cocoa/Entitlements.h>
#import <wtf/text/TextStream.h>
#define RELEASE_LOG_IF_ALLOWED(channel, fmt, ...) RELEASE_LOG_IF(isAlwaysOnLoggingAllowed(), channel, "%p - WebPage::" fmt, this, ##__VA_ARGS__)
#define RELEASE_LOG_ERROR_IF_ALLOWED(channel, fmt, ...) RELEASE_LOG_ERROR_IF(isAlwaysOnLoggingAllowed(), channel, "%p - WebPage::" fmt, this, ##__VA_ARGS__)
namespace WebKit {
using namespace WebCore;
void WebPage::platformInitialize()
{
platformInitializeAccessibility();
}
void WebPage::platformDetach()
{
[m_mockAccessibilityElement setWebPage:nullptr];
}
void WebPage::platformInitializeAccessibility()
{
m_mockAccessibilityElement = adoptNS([[WKAccessibilityWebPageObject alloc] init]);
[m_mockAccessibilityElement setWebPage:this];
accessibilityTransferRemoteToken(accessibilityRemoteTokenData());
}
void WebPage::platformReinitialize()
{
accessibilityTransferRemoteToken(accessibilityRemoteTokenData());
}
RetainPtr<NSData> WebPage::accessibilityRemoteTokenData() const
{
return newAccessibilityRemoteToken([NSUUID UUID]);
}
static void computeEditableRootHasContentAndPlainText(const VisibleSelection& selection, EditorState::PostLayoutData& data)
{
data.hasContent = false;
data.hasPlainText = false;
if (!selection.isContentEditable())
return;
if (data.selectedTextLength || data.characterAfterSelection || data.characterBeforeSelection || data.twoCharacterBeforeSelection) {
// If any of these variables have been previously set, the editable root must have plain text content, so we can bail from the remainder of the check.
data.hasContent = true;
data.hasPlainText = true;
return;
}
auto* root = selection.rootEditableElement();
if (!root)
return;
auto startInEditableRoot = firstPositionInNode(root);
data.hasContent = root->hasChildNodes() && !isEndOfEditableOrNonEditableContent(startInEditableRoot);
data.hasPlainText = data.hasContent && hasAnyPlainText(Range::create(root->document(), VisiblePosition { startInEditableRoot }, VisiblePosition { lastPositionInNode(root) }));
}
bool WebPage::isTransparentOrFullyClipped(const Element& element) const
{
auto* renderer = element.renderer();
if (!renderer)
return false;
auto* enclosingLayer = renderer->enclosingLayer();
if (enclosingLayer && enclosingLayer->isTransparentRespectingParentFrames())
return true;
return renderer->hasNonEmptyVisibleRectRespectingParentFrames();
}
void WebPage::platformEditorState(Frame& frame, EditorState& result, IncludePostLayoutDataHint shouldIncludePostLayoutData) const
{
FrameView* view = frame.view();
if (frame.editor().hasComposition()) {
RefPtr<Range> compositionRange = frame.editor().compositionRange();
Vector<WebCore::SelectionRect> compositionRects;
if (compositionRange) {
compositionRange->collectSelectionRects(compositionRects);
if (compositionRects.size())
result.firstMarkedRect = view->contentsToRootView(compositionRects[0].rect());
if (compositionRects.size() > 1)
result.lastMarkedRect = view->contentsToRootView(compositionRects.last().rect());
else
result.lastMarkedRect = result.firstMarkedRect;
result.markedText = plainTextReplacingNoBreakSpace(compositionRange.get());
}
}
// We only set the remaining EditorState entries if layout is done as a performance optimization
// to avoid the need to force a synchronous layout here to compute these entries. If we
// have a composition or are using a hardware keyboard then we send the full editor state
// immediately so that the UIProcess can update UI, including the position of the caret.
bool needsLayout = !frame.view() || frame.view()->needsLayout();
bool requiresPostLayoutData = frame.editor().hasComposition();
#if !PLATFORM(MACCATALYST)
requiresPostLayoutData |= m_keyboardIsAttached;
#endif
if ((shouldIncludePostLayoutData == IncludePostLayoutDataHint::No || needsLayout) && !requiresPostLayoutData) {
result.isMissingPostLayoutData = true;
return;
}
auto& postLayoutData = result.postLayoutData();
const VisibleSelection& selection = frame.selection().selection();
postLayoutData.isStableStateUpdate = m_isInStableState;
bool startNodeIsInsideFixedPosition = false;
bool endNodeIsInsideFixedPosition = false;
if (selection.isCaret()) {
postLayoutData.caretRectAtStart = view->contentsToRootView(frame.selection().absoluteCaretBounds(&startNodeIsInsideFixedPosition));
endNodeIsInsideFixedPosition = startNodeIsInsideFixedPosition;
postLayoutData.caretRectAtEnd = postLayoutData.caretRectAtStart;
// FIXME: The following check should take into account writing direction.
postLayoutData.isReplaceAllowed = result.isContentEditable && atBoundaryOfGranularity(selection.start(), WordGranularity, DirectionForward);
postLayoutData.wordAtSelection = plainTextReplacingNoBreakSpace(wordRangeFromPosition(selection.start()).get());
if (selection.isContentEditable())
charactersAroundPosition(selection.start(), postLayoutData.characterAfterSelection, postLayoutData.characterBeforeSelection, postLayoutData.twoCharacterBeforeSelection);
} else if (selection.isRange()) {
postLayoutData.caretRectAtStart = view->contentsToRootView(VisiblePosition(selection.start()).absoluteCaretBounds(&startNodeIsInsideFixedPosition));
postLayoutData.caretRectAtEnd = view->contentsToRootView(VisiblePosition(selection.end()).absoluteCaretBounds(&endNodeIsInsideFixedPosition));
RefPtr<Range> selectedRange = selection.toNormalizedRange();
String selectedText;
if (selectedRange) {
selectedRange->collectSelectionRects(postLayoutData.selectionRects);
convertSelectionRectsToRootView(view, postLayoutData.selectionRects);
selectedText = plainTextReplacingNoBreakSpace(selectedRange.get(), TextIteratorDefaultBehavior, true);
postLayoutData.selectedTextLength = selectedText.length();
const int maxSelectedTextLength = 200;
postLayoutData.wordAtSelection = selectedText.left(maxSelectedTextLength);
}
// FIXME: We should disallow replace when the string contains only CJ characters.
postLayoutData.isReplaceAllowed = result.isContentEditable && !result.isInPasswordField && !selectedText.isAllSpecialCharacters<isHTMLSpace>();
}
postLayoutData.atStartOfSentence = frame.selection().selectionAtSentenceStart();
postLayoutData.insideFixedPosition = startNodeIsInsideFixedPosition || endNodeIsInsideFixedPosition;
if (!selection.isNone()) {
if (m_focusedElement && m_focusedElement->renderer()) {
auto& renderer = *m_focusedElement->renderer();
postLayoutData.focusedElementRect = rootViewInteractionBoundsForElement(*m_focusedElement);
postLayoutData.caretColor = renderer.style().caretColor();
}
if (result.isContentEditable) {
if (auto editableRootOrFormControl = makeRefPtr(selection.rootEditableElement())) {
if (is<HTMLTextFormControlElement>(editableRootOrFormControl->shadowHost()))
editableRootOrFormControl = editableRootOrFormControl->shadowHost();
postLayoutData.editableRootIsTransparentOrFullyClipped = isTransparentOrFullyClipped(*editableRootOrFormControl);
}
}
computeEditableRootHasContentAndPlainText(selection, postLayoutData);
postLayoutData.selectionStartIsAtParagraphBoundary = atBoundaryOfGranularity(selection.visibleStart(), TextGranularity::ParagraphGranularity, SelectionDirection::DirectionBackward);
postLayoutData.selectionEndIsAtParagraphBoundary = atBoundaryOfGranularity(selection.visibleEnd(), TextGranularity::ParagraphGranularity, SelectionDirection::DirectionForward);
}
}
void WebPage::platformWillPerformEditingCommand()
{
auto& frame = m_page->focusController().focusedOrMainFrame();
if (auto* document = frame.document()) {
if (auto* holdingTank = document->domTimerHoldingTankIfExists())
holdingTank->removeAll();
}
}
FloatSize WebPage::screenSize() const
{
return m_screenSize;
}
FloatSize WebPage::availableScreenSize() const
{
return m_availableScreenSize;
}
FloatSize WebPage::overrideScreenSize() const
{
return m_overrideScreenSize;
}
void WebPage::didReceiveMobileDocType(bool isMobileDoctype)
{
resetViewportDefaultConfiguration(m_mainFrame.get(), isMobileDoctype);
}
void WebPage::savePageState(HistoryItem& historyItem)
{
historyItem.setScaleIsInitial(!m_userHasChangedPageScaleFactor);
historyItem.setMinimumLayoutSizeInScrollViewCoordinates(m_viewportConfiguration.minimumLayoutSize());
historyItem.setContentSize(m_viewportConfiguration.contentsSize());
}
static double scaleAfterViewportWidthChange(double currentScale, bool userHasChangedPageScaleFactor, const ViewportConfiguration& viewportConfiguration, float unobscuredWidthInScrollViewCoordinates, const IntSize& newContentSize, const IntSize& oldContentSize, float visibleHorizontalFraction)
{
double scale;
if (!userHasChangedPageScaleFactor)
scale = viewportConfiguration.initialScale();
else
scale = std::max(std::min(currentScale, viewportConfiguration.maximumScale()), viewportConfiguration.minimumScale());
LOG(VisibleRects, "scaleAfterViewportWidthChange getting scale %.2f", scale);
if (userHasChangedPageScaleFactor) {
// When the content size changes, we keep the same relative horizontal content width in view, otherwise we would
// end up zoomed too far in landscape->portrait, and too close in portrait->landscape.
double widthToKeepInView = visibleHorizontalFraction * newContentSize.width();
double newScale = unobscuredWidthInScrollViewCoordinates / widthToKeepInView;
scale = std::max(std::min(newScale, viewportConfiguration.maximumScale()), viewportConfiguration.minimumScale());
}
return scale;
}
static FloatPoint relativeCenterAfterContentSizeChange(const FloatRect& originalContentRect, IntSize oldContentSize, IntSize newContentSize)
{
// If the content size has changed, keep the same relative position.
FloatPoint oldContentCenter = originalContentRect.center();
float relativeHorizontalPosition = oldContentCenter.x() / oldContentSize.width();
float relativeVerticalPosition = oldContentCenter.y() / oldContentSize.height();
return FloatPoint(relativeHorizontalPosition * newContentSize.width(), relativeVerticalPosition * newContentSize.height());
}
static inline FloatRect adjustExposedRectForNewScale(const FloatRect& exposedRect, double exposedRectScale, double newScale)
{
if (exposedRectScale == newScale)
return exposedRect;
float horizontalChange = exposedRect.width() * exposedRectScale / newScale - exposedRect.width();
float verticalChange = exposedRect.height() * exposedRectScale / newScale - exposedRect.height();
auto adjustedRect = exposedRect;
adjustedRect.inflate({ horizontalChange / 2, verticalChange / 2 });
return adjustedRect;
}
void WebPage::restorePageState(const HistoryItem& historyItem)
{
// When a HistoryItem is cleared, its scale factor and scroll point are set to zero. We should not try to restore the other
// parameters in those conditions.
if (!historyItem.pageScaleFactor()) {
send(Messages::WebPageProxy::CouldNotRestorePageState());
return;
}
// We can restore the exposed rect and scale, but we cannot touch the scroll position since the obscured insets
// may be changing in the UIProcess. The UIProcess can update the position from the information we send and will then
// scroll to the correct position through a regular VisibleContentRectUpdate.
m_userHasChangedPageScaleFactor = !historyItem.scaleIsInitial();
FrameView& frameView = *m_page->mainFrame().view();
FloatSize currentMinimumLayoutSizeInScrollViewCoordinates = m_viewportConfiguration.minimumLayoutSize();
if (historyItem.minimumLayoutSizeInScrollViewCoordinates() == currentMinimumLayoutSizeInScrollViewCoordinates) {
float boundedScale = historyItem.scaleIsInitial() ? m_viewportConfiguration.initialScale() : historyItem.pageScaleFactor();
boundedScale = std::min<float>(m_viewportConfiguration.maximumScale(), std::max<float>(m_viewportConfiguration.minimumScale(), boundedScale));
scalePage(boundedScale, IntPoint());
Optional<FloatPoint> scrollPosition;
if (historyItem.shouldRestoreScrollPosition()) {
m_drawingArea->setExposedContentRect(historyItem.exposedContentRect());
m_hasRestoredExposedContentRectAfterDidCommitLoad = true;
scrollPosition = FloatPoint(historyItem.scrollPosition());
}
send(Messages::WebPageProxy::RestorePageState(scrollPosition, frameView.scrollOrigin(), historyItem.obscuredInsets(), boundedScale));
} else {
IntSize oldContentSize = historyItem.contentSize();
IntSize newContentSize = frameView.contentsSize();
double visibleHorizontalFraction = static_cast<float>(historyItem.unobscuredContentRect().width()) / oldContentSize.width();
double newScale = scaleAfterViewportWidthChange(historyItem.pageScaleFactor(), !historyItem.scaleIsInitial(), m_viewportConfiguration, currentMinimumLayoutSizeInScrollViewCoordinates.width(), newContentSize, oldContentSize, visibleHorizontalFraction);
Optional<FloatPoint> newCenter;
if (historyItem.shouldRestoreScrollPosition()) {
if (!oldContentSize.isEmpty() && !newContentSize.isEmpty() && newContentSize != oldContentSize)
newCenter = relativeCenterAfterContentSizeChange(historyItem.unobscuredContentRect(), oldContentSize, newContentSize);
else
newCenter = FloatRect(historyItem.unobscuredContentRect()).center();
}
scalePage(newScale, IntPoint());
send(Messages::WebPageProxy::RestorePageCenterAndScale(newCenter, newScale));
}
}
double WebPage::minimumPageScaleFactor() const
{
if (!m_viewportConfiguration.allowsUserScaling())
return m_page->pageScaleFactor();
return m_viewportConfiguration.minimumScale();
}
double WebPage::maximumPageScaleFactor() const
{
if (!m_viewportConfiguration.allowsUserScaling())
return m_page->pageScaleFactor();
return m_viewportConfiguration.maximumScale();
}
double WebPage::maximumPageScaleFactorIgnoringAlwaysScalable() const
{
if (!m_viewportConfiguration.allowsUserScalingIgnoringAlwaysScalable())
return m_page->pageScaleFactor();
return m_viewportConfiguration.maximumScaleIgnoringAlwaysScalable();
}
bool WebPage::allowsUserScaling() const
{
return m_viewportConfiguration.allowsUserScaling();
}
bool WebPage::handleEditingKeyboardEvent(KeyboardEvent& event)
{
auto* platformEvent = event.underlyingPlatformEvent();
if (!platformEvent)
return false;
// Don't send synthetic events to the UIProcess. They are only
// used for interacting with JavaScript.
if (platformEvent->isSyntheticEvent())
return false;
// FIXME: Interpret the event immediately upon receiving it in UI process, without sending to WebProcess first.
bool eventWasHandled = false;
bool sendResult = WebProcess::singleton().parentProcessConnection()->sendSync(Messages::WebPageProxy::InterpretKeyEvent(editorState(), platformEvent->type() == PlatformKeyboardEvent::Char),
Messages::WebPageProxy::InterpretKeyEvent::Reply(eventWasHandled), m_identifier);
return sendResult && eventWasHandled;
}
bool WebPage::parentProcessHasServiceWorkerEntitlement() const
{
static bool hasEntitlement = WTF::hasEntitlement(WebProcess::singleton().parentProcessConnection()->xpcConnection(), "com.apple.developer.WebKit.ServiceWorkers");
return hasEntitlement;
}
void WebPage::sendComplexTextInputToPlugin(uint64_t, const String&)
{
notImplemented();
}
bool WebPage::performNonEditingBehaviorForSelector(const String&, WebCore::KeyboardEvent*)
{
notImplemented();
return false;
}
bool WebPage::performDefaultBehaviorForKeyEvent(const WebKeyboardEvent&)
{
notImplemented();
return false;
}
void WebPage::getSelectionContext(CallbackID callbackID)
{
Frame& frame = m_page->focusController().focusedOrMainFrame();
if (!frame.selection().isRange()) {
send(Messages::WebPageProxy::SelectionContextCallback(String(), String(), String(), callbackID));
return;
}
const int selectionExtendedContextLength = 350;
String selectedText = plainTextReplacingNoBreakSpace(frame.selection().selection().toNormalizedRange().get());
String textBefore = plainTextReplacingNoBreakSpace(rangeExpandedByCharactersInDirectionAtWordBoundary(frame.selection().selection().start(), selectionExtendedContextLength, DirectionBackward).get(), TextIteratorDefaultBehavior, true);
String textAfter = plainTextReplacingNoBreakSpace(rangeExpandedByCharactersInDirectionAtWordBoundary(frame.selection().selection().end(), selectionExtendedContextLength, DirectionForward).get(), TextIteratorDefaultBehavior, true);
send(Messages::WebPageProxy::SelectionContextCallback(selectedText, textBefore, textAfter, callbackID));
}
NSObject *WebPage::accessibilityObjectForMainFramePlugin()
{
if (!m_page)
return nil;
if (auto* pluginView = pluginViewForFrame(&m_page->mainFrame()))
return pluginView->accessibilityObject();
return nil;
}
void WebPage::registerUIProcessAccessibilityTokens(const IPC::DataReference& elementToken, const IPC::DataReference&)
{
NSData *elementTokenData = [NSData dataWithBytes:elementToken.data() length:elementToken.size()];
[m_mockAccessibilityElement setRemoteTokenData:elementTokenData];
}
void WebPage::readSelectionFromPasteboard(const String&, CompletionHandler<void(bool&&)>&& completionHandler)
{
notImplemented();
completionHandler(false);
}
void WebPage::getStringSelectionForPasteboard(CompletionHandler<void(String&&)>&& completionHandler)
{
notImplemented();
completionHandler({ });
}
void WebPage::getDataSelectionForPasteboard(const String, CompletionHandler<void(SharedMemory::Handle&&, uint64_t)>&& completionHandler)
{
notImplemented();
completionHandler({ }, 0);
}
WKAccessibilityWebPageObject* WebPage::accessibilityRemoteObject()
{
notImplemented();
return 0;
}
bool WebPage::platformCanHandleRequest(const WebCore::ResourceRequest&)
{
notImplemented();
return false;
}
void WebPage::shouldDelayWindowOrderingEvent(const WebKit::WebMouseEvent&, CompletionHandler<void(bool)>&& completionHandler)
{
notImplemented();
completionHandler(false);
}
void WebPage::acceptsFirstMouse(int, const WebKit::WebMouseEvent&, CompletionHandler<void(bool)>&& completionHandler)
{
notImplemented();
completionHandler(false);
}
void WebPage::computePagesForPrintingPDFDocument(WebCore::FrameIdentifier, const PrintInfo&, Vector<IntRect>&)
{
notImplemented();
}
void WebPage::drawPagesToPDFFromPDFDocument(CGContextRef, PDFDocument *, const PrintInfo&, uint32_t, uint32_t)
{
notImplemented();
}
void WebPage::advanceToNextMisspelling(bool)
{
notImplemented();
}
IntRect WebPage::rectForElementAtInteractionLocation() const
{
HitTestResult result = m_page->mainFrame().eventHandler().hitTestResultAtPoint(m_lastInteractionLocation, HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::AllowChildFrameContent);
Node* hitNode = result.innerNode();
if (!hitNode || !hitNode->renderer())
return IntRect();
return result.innerNodeFrame()->view()->contentsToRootView(hitNode->renderer()->absoluteBoundingBoxRect(true));
}
void WebPage::updateSelectionAppearance()
{
Frame& frame = m_page->focusController().focusedOrMainFrame();
if (!frame.editor().ignoreSelectionChanges() && (frame.editor().hasComposition() || !frame.selection().selection().isNone()))
didChangeSelection();
}
static void dispatchSyntheticMouseMove(Frame& mainFrame, const WebCore::FloatPoint& location, OptionSet<WebEvent::Modifier> modifiers, WebCore::PointerID pointerId = WebCore::mousePointerID)
{
IntPoint roundedAdjustedPoint = roundedIntPoint(location);
auto shiftKey = modifiers.contains(WebEvent::Modifier::ShiftKey);
auto ctrlKey = modifiers.contains(WebEvent::Modifier::ControlKey);
auto altKey = modifiers.contains(WebEvent::Modifier::AltKey);
auto metaKey = modifiers.contains(WebEvent::Modifier::MetaKey);
auto mouseEvent = PlatformMouseEvent(roundedAdjustedPoint, roundedAdjustedPoint, NoButton, PlatformEvent::MouseMoved, 0, shiftKey, ctrlKey, altKey, metaKey, WallTime::now(), WebCore::ForceAtClick, WebCore::NoTap, pointerId);
// FIXME: Pass caps lock state.
mainFrame.eventHandler().dispatchSyntheticMouseMove(mouseEvent);
}
void WebPage::generateSyntheticEditingCommand(SyntheticEditingCommandType command)
{
PlatformKeyboardEvent keyEvent;
auto& frame = m_page->focusController().focusedOrMainFrame();
OptionSet<PlatformEvent::Modifier> modifiers;
modifiers.add(PlatformEvent::Modifier::MetaKey);
switch (command) {
case SyntheticEditingCommandType::Undo:
keyEvent = PlatformKeyboardEvent(PlatformEvent::KeyDown, "z", "z",
"z", "KeyZ"_s,
@"U+005A", 90, false, false, false, modifiers, WallTime::now());
break;
case SyntheticEditingCommandType::Redo:
keyEvent = PlatformKeyboardEvent(PlatformEvent::KeyDown, "y", "y",
"y", "KeyY"_s,
@"U+0059", 89, false, false, false, modifiers, WallTime::now());
break;
case SyntheticEditingCommandType::ToggleBoldface:
keyEvent = PlatformKeyboardEvent(PlatformEvent::KeyDown, "b", "b",
"b", "KeyB"_s,
@"U+0042", 66, false, false, false, modifiers, WallTime::now());
break;
case SyntheticEditingCommandType::ToggleItalic:
keyEvent = PlatformKeyboardEvent(PlatformEvent::KeyDown, "i", "i",
"i", "KeyI"_s,
@"U+0049", 73, false, false, false, modifiers, WallTime::now());
break;
case SyntheticEditingCommandType::ToggleUnderline:
keyEvent = PlatformKeyboardEvent(PlatformEvent::KeyDown, "u", "u",
"u", "KeyU"_s,
@"U+0055", 85, false, false, false, modifiers, WallTime::now());
break;
default:
break;
}
keyEvent.setIsSyntheticEvent();
PlatformKeyboardEvent::setCurrentModifierState(modifiers);
frame.eventHandler().keyEvent(keyEvent);
}
void WebPage::handleSyntheticClick(Node& nodeRespondingToClick, const WebCore::FloatPoint& location, OptionSet<WebEvent::Modifier> modifiers, WebCore::PointerID pointerId)
{
if (!nodeRespondingToClick.document().settings().contentChangeObserverEnabled()) {
completeSyntheticClick(nodeRespondingToClick, location, modifiers, WebCore::OneFingerTap, pointerId);
return;
}
auto& respondingDocument = nodeRespondingToClick.document();
auto& contentChangeObserver = respondingDocument.contentChangeObserver();
auto targetNodeWentFromHiddenToVisible = contentChangeObserver.hiddenTouchTarget() == &nodeRespondingToClick && ContentChangeObserver::isConsideredVisible(nodeRespondingToClick);
{
LOG_WITH_STREAM(ContentObservation, stream << "handleSyntheticClick: node(" << &nodeRespondingToClick << ") " << location);
ContentChangeObserver::MouseMovedScope observingScope(respondingDocument);
auto& mainFrame = m_page->mainFrame();
dispatchSyntheticMouseMove(mainFrame, location, modifiers, pointerId);
mainFrame.document()->updateStyleIfNeeded();
if (m_isClosed)
return;
}
if (targetNodeWentFromHiddenToVisible) {
LOG(ContentObservation, "handleSyntheticClick: target node was hidden and now is visible -> hover.");
return;
}
auto nodeTriggersFastPath = [&](auto& targetNode) {
if (!is<Element>(targetNode))
return false;
if (is<HTMLFormControlElement>(targetNode))
return true;
if (targetNode.document().quirks().shouldIgnoreAriaForFastPathContentObservationCheck())
return false;
auto ariaRole = AccessibilityObject::ariaRoleToWebCoreRole(downcast<Element>(targetNode).getAttribute(HTMLNames::roleAttr));
return AccessibilityObject::isARIAControl(ariaRole) || AccessibilityObject::isARIAInput(ariaRole);
};
auto targetNodeTriggersFastPath = nodeTriggersFastPath(nodeRespondingToClick);
auto observedContentChange = contentChangeObserver.observedContentChange();
auto continueContentObservation = !(observedContentChange == WKContentVisibilityChange || targetNodeTriggersFastPath);
if (continueContentObservation) {
// Wait for callback to completePendingSyntheticClickForContentChangeObserver() to decide whether to send the click event.
const Seconds observationDuration = 32_ms;
contentChangeObserver.startContentObservationForDuration(observationDuration);
LOG(ContentObservation, "handleSyntheticClick: Can't decide it yet -> wait.");
m_pendingSyntheticClickNode = &nodeRespondingToClick;
m_pendingSyntheticClickLocation = location;
m_pendingSyntheticClickModifiers = modifiers;
m_pendingSyntheticClickPointerId = pointerId;
return;
}
contentChangeObserver.stopContentObservation();
callOnMainThread([protectedThis = makeRefPtr(this), targetNode = Ref<Node>(nodeRespondingToClick), location, modifiers, observedContentChange, pointerId] {
if (protectedThis->m_isClosed || !protectedThis->corePage())
return;
auto shouldStayAtHoverState = observedContentChange == WKContentVisibilityChange;
if (shouldStayAtHoverState) {
// The move event caused new contents to appear. Don't send synthetic click event, but just ensure that the mouse is on the most recent content.
dispatchSyntheticMouseMove(protectedThis->corePage()->mainFrame(), location, modifiers, pointerId);
LOG(ContentObservation, "handleSyntheticClick: Observed meaningful visible change -> hover.");
return;
}
LOG(ContentObservation, "handleSyntheticClick: calling completeSyntheticClick -> click.");
protectedThis->completeSyntheticClick(targetNode, location, modifiers, WebCore::OneFingerTap, pointerId);
});
}
void WebPage::didFinishContentChangeObserving(WKContentChange observedContentChange)
{
LOG_WITH_STREAM(ContentObservation, stream << "didFinishContentChangeObserving: pending target node(" << m_pendingSyntheticClickNode << ")");
if (!m_pendingSyntheticClickNode)
return;
callOnMainThread([protectedThis = makeRefPtr(this), targetNode = Ref<Node>(*m_pendingSyntheticClickNode), originalDocument = makeWeakPtr(m_pendingSyntheticClickNode->document()), observedContentChange, location = m_pendingSyntheticClickLocation, modifiers = m_pendingSyntheticClickModifiers, pointerId = m_pendingSyntheticClickPointerId] {
if (protectedThis->m_isClosed || !protectedThis->corePage())
return;
if (!originalDocument || &targetNode->document() != originalDocument)
return;
// Only dispatch the click if the document didn't get changed by any timers started by the move event.
if (observedContentChange == WKContentNoChange) {
LOG(ContentObservation, "No chage was observed -> click.");
protectedThis->completeSyntheticClick(targetNode, location, modifiers, WebCore::OneFingerTap, pointerId);
return;
}
// Ensure that the mouse is on the most recent content.
LOG(ContentObservation, "Observed meaningful visible change -> hover.");
dispatchSyntheticMouseMove(protectedThis->corePage()->mainFrame(), location, modifiers, pointerId);
});
m_pendingSyntheticClickNode = nullptr;
m_pendingSyntheticClickLocation = { };
m_pendingSyntheticClickModifiers = { };
m_pendingSyntheticClickPointerId = 0;
}
void WebPage::completeSyntheticClick(Node& nodeRespondingToClick, const WebCore::FloatPoint& location, OptionSet<WebEvent::Modifier> modifiers, SyntheticClickType syntheticClickType, WebCore::PointerID pointerId)
{
IntPoint roundedAdjustedPoint = roundedIntPoint(location);
Frame& mainframe = m_page->mainFrame();
RefPtr<Frame> oldFocusedFrame = m_page->focusController().focusedFrame();
RefPtr<Element> oldFocusedElement = oldFocusedFrame ? oldFocusedFrame->document()->focusedElement() : nullptr;
SetForScope<bool> userIsInteractingChange { m_userIsInteracting, true };
bool tapWasHandled = false;
m_lastInteractionLocation = roundedAdjustedPoint;
// FIXME: Pass caps lock state.
bool shiftKey = modifiers.contains(WebEvent::Modifier::ShiftKey);
bool ctrlKey = modifiers.contains(WebEvent::Modifier::ControlKey);
bool altKey = modifiers.contains(WebEvent::Modifier::AltKey);
bool metaKey = modifiers.contains(WebEvent::Modifier::MetaKey);
tapWasHandled |= mainframe.eventHandler().handleMousePressEvent(PlatformMouseEvent(roundedAdjustedPoint, roundedAdjustedPoint, LeftButton, PlatformEvent::MousePressed, 1, shiftKey, ctrlKey, altKey, metaKey, WallTime::now(), WebCore::ForceAtClick, syntheticClickType, pointerId));
if (m_isClosed)
return;
tapWasHandled |= mainframe.eventHandler().handleMouseReleaseEvent(PlatformMouseEvent(roundedAdjustedPoint, roundedAdjustedPoint, LeftButton, PlatformEvent::MouseReleased, 1, shiftKey, ctrlKey, altKey, metaKey, WallTime::now(), WebCore::ForceAtClick, syntheticClickType, pointerId));
if (m_isClosed)
return;
RefPtr<Frame> newFocusedFrame = m_page->focusController().focusedFrame();
RefPtr<Element> newFocusedElement = newFocusedFrame ? newFocusedFrame->document()->focusedElement() : nullptr;
// If the focus has not changed, we need to notify the client anyway, since it might be
// necessary to start assisting the node.
// If the node has been focused by JavaScript without user interaction, the
// keyboard is not on screen.
if (newFocusedElement && newFocusedElement == oldFocusedElement)
elementDidRefocus(*newFocusedElement);
if (nodeRespondingToClick.document().settings().contentChangeObserverEnabled()) {
auto& document = nodeRespondingToClick.document();
// Dispatch mouseOut to dismiss tooltip content when tapping on the control bar buttons (cc, settings).
if (document.quirks().needsYouTubeMouseOutQuirk()) {
if (auto* frame = document.frame())
frame->eventHandler().dispatchSyntheticMouseOut(PlatformMouseEvent(roundedAdjustedPoint, roundedAdjustedPoint, LeftButton, PlatformEvent::NoType, 0, shiftKey, ctrlKey, altKey, metaKey, WallTime::now(), 0, WebCore::NoTap, pointerId));
}
}
if (m_isClosed)
return;
if (!tapWasHandled || !nodeRespondingToClick.isElementNode())
send(Messages::WebPageProxy::DidNotHandleTapAsClick(roundedIntPoint(location)));
send(Messages::WebPageProxy::DidCompleteSyntheticClick());
}
void WebPage::handleTap(const IntPoint& point, OptionSet<WebEvent::Modifier> modifiers, TransactionID lastLayerTreeTransactionId)
{
FloatPoint adjustedPoint;
Node* nodeRespondingToClick = m_page->mainFrame().nodeRespondingToClickEvents(point, adjustedPoint);
Frame* frameRespondingToClick = nodeRespondingToClick ? nodeRespondingToClick->document().frame() : nullptr;
IntPoint adjustedIntPoint = roundedIntPoint(adjustedPoint);
if (!frameRespondingToClick || lastLayerTreeTransactionId < WebFrame::fromCoreFrame(*frameRespondingToClick)->firstLayerTreeTransactionIDAfterDidCommitLoad())
send(Messages::WebPageProxy::DidNotHandleTapAsClick(adjustedIntPoint));
#if ENABLE(DATA_DETECTION)
else if (is<Element>(*nodeRespondingToClick) && DataDetection::shouldCancelDefaultAction(downcast<Element>(*nodeRespondingToClick))) {
InteractionInformationRequest request(adjustedIntPoint);
requestPositionInformation(request);
send(Messages::WebPageProxy::DidNotHandleTapAsClick(adjustedIntPoint));
}
#endif
else
handleSyntheticClick(*nodeRespondingToClick, adjustedPoint, modifiers);
}
void WebPage::handleDoubleTapForDoubleClickAtPoint(const IntPoint& point, OptionSet<WebEvent::Modifier> modifiers, TransactionID lastLayerTreeTransactionId)
{
FloatPoint adjustedPoint;
auto* nodeRespondingToDoubleClick = m_page->mainFrame().nodeRespondingToDoubleClickEvent(point, adjustedPoint);
if (!nodeRespondingToDoubleClick)
return;
auto* frameRespondingToDoubleClick = nodeRespondingToDoubleClick->document().frame();
if (!frameRespondingToDoubleClick || lastLayerTreeTransactionId < WebFrame::fromCoreFrame(*frameRespondingToDoubleClick)->firstLayerTreeTransactionIDAfterDidCommitLoad())
return;
bool shiftKey = modifiers.contains(WebEvent::Modifier::ShiftKey);
bool ctrlKey = modifiers.contains(WebEvent::Modifier::ControlKey);
bool altKey = modifiers.contains(WebEvent::Modifier::AltKey);
bool metaKey = modifiers.contains(WebEvent::Modifier::MetaKey);
auto roundedAdjustedPoint = roundedIntPoint(adjustedPoint);
nodeRespondingToDoubleClick->document().frame()->eventHandler().handleMousePressEvent(PlatformMouseEvent(roundedAdjustedPoint, roundedAdjustedPoint, LeftButton, PlatformEvent::MousePressed, 2, shiftKey, ctrlKey, altKey, metaKey, WallTime::now(), 0, WebCore::NoTap));
if (m_isClosed)
return;
nodeRespondingToDoubleClick->document().frame()->eventHandler().handleMouseReleaseEvent(PlatformMouseEvent(roundedAdjustedPoint, roundedAdjustedPoint, LeftButton, PlatformEvent::MouseReleased, 2, shiftKey, ctrlKey, altKey, metaKey, WallTime::now(), 0, WebCore::NoTap));
}
void WebPage::requestFocusedElementInformation(WebKit::CallbackID callbackID)
{
FocusedElementInformation info;
if (m_focusedElement)
getFocusedElementInformation(info);
send(Messages::WebPageProxy::FocusedElementInformationCallback(info, callbackID));
}
#if ENABLE(DATA_INTERACTION)
void WebPage::requestDragStart(const IntPoint& clientPosition, const IntPoint& globalPosition, uint64_t allowedActions)
{
SetForScope<WebCore::DragSourceAction> allowedActionsForScope(m_allowedDragSourceActions, static_cast<WebCore::DragSourceAction>(allowedActions));
bool didStart = m_page->mainFrame().eventHandler().tryToBeginDragAtPoint(clientPosition, globalPosition);
send(Messages::WebPageProxy::DidHandleDragStartRequest(didStart));
}
void WebPage::requestAdditionalItemsForDragSession(const IntPoint& clientPosition, const IntPoint& globalPosition, uint64_t allowedActions)
{
SetForScope<WebCore::DragSourceAction> allowedActionsForScope(m_allowedDragSourceActions, static_cast<WebCore::DragSourceAction>(allowedActions));
// To augment the platform drag session with additional items, end the current drag session and begin a new drag session with the new drag item.
// This process is opaque to the UI process, which still maintains the old drag item in its drag session. Similarly, this persistent drag session
// is opaque to the web process, which only sees that the current drag has ended, and that a new one is beginning.
PlatformMouseEvent event(clientPosition, globalPosition, LeftButton, PlatformEvent::MouseMoved, 0, false, false, false, false, WallTime::now(), 0, NoTap);
m_page->dragController().dragEnded();
m_page->mainFrame().eventHandler().dragSourceEndedAt(event, DragOperationNone, MayExtendDragSession::Yes);
bool didHandleDrag = m_page->mainFrame().eventHandler().tryToBeginDragAtPoint(clientPosition, globalPosition);
send(Messages::WebPageProxy::DidHandleAdditionalDragItemsRequest(didHandleDrag));
}
void WebPage::insertDroppedImagePlaceholders(const Vector<IntSize>& imageSizes, CompletionHandler<void(const Vector<IntRect>&, Optional<WebCore::TextIndicatorData>)>&& reply)
{
m_page->dragController().insertDroppedImagePlaceholdersAtCaret(imageSizes);
auto placeholderRects = m_page->dragController().droppedImagePlaceholders().map([&] (auto& element) {
return rootViewBoundsForElement(element);
});
auto imagePlaceholderRange = m_page->dragController().droppedImagePlaceholderRange();
if (placeholderRects.size() != imageSizes.size()) {
RELEASE_LOG(DragAndDrop, "Failed to insert dropped image placeholders: placeholder rect count (%tu) does not match image size count (%tu).", placeholderRects.size(), imageSizes.size());
reply({ }, WTF::nullopt);
return;
}
if (!imagePlaceholderRange) {
RELEASE_LOG(DragAndDrop, "Failed to insert dropped image placeholders: no image placeholder range.");
reply({ }, WTF::nullopt);
return;
}
Optional<TextIndicatorData> textIndicatorData;
OptionSet<TextIndicatorOption> textIndicatorOptions = {
TextIndicatorOptionIncludeSnapshotOfAllVisibleContentWithoutSelection,
TextIndicatorOptionExpandClipBeyondVisibleRect,
TextIndicatorOptionPaintAllContent,
TextIndicatorOptionUseSelectionRectForSizing
};
if (auto textIndicator = TextIndicator::createWithRange(*imagePlaceholderRange, textIndicatorOptions.toRaw(), TextIndicatorPresentationTransition::None, { }))
textIndicatorData = textIndicator->data();
reply(WTFMove(placeholderRects), WTFMove(textIndicatorData));
}
void WebPage::didConcludeDrop()
{
m_rangeForDropSnapshot = nullptr;
m_pendingImageElementsForDropSnapshot.clear();
}
void WebPage::didConcludeEditDrag()
{
send(Messages::WebPageProxy::WillReceiveEditDragSnapshot());
layoutIfNeeded();
m_pendingImageElementsForDropSnapshot.clear();
auto frame = makeRef(m_page->focusController().focusedOrMainFrame());
if (auto selectionRange = frame->selection().selection().toNormalizedRange()) {
m_pendingImageElementsForDropSnapshot = visibleImageElementsInRangeWithNonLoadedImages(*selectionRange);
auto collapsedRange = Range::create(selectionRange->ownerDocument(), selectionRange->endPosition(), selectionRange->endPosition());
frame->selection().setSelectedRange(collapsedRange.ptr(), DOWNSTREAM, FrameSelection::ShouldCloseTyping::Yes, UserTriggered);
m_rangeForDropSnapshot = WTFMove(selectionRange);
}
if (m_pendingImageElementsForDropSnapshot.isEmpty())
computeAndSendEditDragSnapshot();
}
void WebPage::didFinishLoadingImageForElement(WebCore::HTMLImageElement& element)
{
if (element.isDroppedImagePlaceholder())
m_page->dragController().finalizeDroppedImagePlaceholder(element);
if (m_pendingImageElementsForDropSnapshot.isEmpty())
return;
m_pendingImageElementsForDropSnapshot.remove(&element);
if (m_pendingImageElementsForDropSnapshot.isEmpty())
computeAndSendEditDragSnapshot();
}
void WebPage::computeAndSendEditDragSnapshot()
{
Optional<TextIndicatorData> textIndicatorData;
static auto defaultTextIndicatorOptionsForEditDrag = TextIndicatorOptionIncludeSnapshotOfAllVisibleContentWithoutSelection | TextIndicatorOptionExpandClipBeyondVisibleRect | TextIndicatorOptionPaintAllContent | TextIndicatorOptionIncludeMarginIfRangeMatchesSelection | TextIndicatorOptionPaintBackgrounds | TextIndicatorOptionComputeEstimatedBackgroundColor | TextIndicatorOptionUseSelectionRectForSizing | TextIndicatorOptionIncludeSnapshotWithSelectionHighlight;
if (auto range = std::exchange(m_rangeForDropSnapshot, nullptr)) {
if (auto textIndicator = TextIndicator::createWithRange(*range, defaultTextIndicatorOptionsForEditDrag, TextIndicatorPresentationTransition::None, { }))
textIndicatorData = textIndicator->data();
}
send(Messages::WebPageProxy::DidReceiveEditDragSnapshot(WTFMove(textIndicatorData)));
}
#endif
void WebPage::sendTapHighlightForNodeIfNecessary(uint64_t requestID, Node* node)
{
#if ENABLE(TOUCH_EVENTS)
if (!node)
return;
if (m_page->isEditable() && node == m_page->mainFrame().document()->body())
return;
if (is<Element>(*node)) {
ASSERT(m_page);
m_page->mainFrame().loader().client().prefetchDNS(downcast<Element>(*node).absoluteLinkURL().host().toString());
}
if (is<HTMLAreaElement>(node)) {
node = downcast<HTMLAreaElement>(node)->imageElement();
if (!node)
return;
}
Vector<FloatQuad> quads;
if (RenderObject *renderer = node->renderer()) {
renderer->absoluteQuads(quads);
Color highlightColor = renderer->style().tapHighlightColor();
if (!node->document().frame()->isMainFrame()) {
FrameView* view = node->document().frame()->view();
for (size_t i = 0; i < quads.size(); ++i) {
FloatQuad& currentQuad = quads[i];
currentQuad.setP1(view->contentsToRootView(roundedIntPoint(currentQuad.p1())));
currentQuad.setP2(view->contentsToRootView(roundedIntPoint(currentQuad.p2())));
currentQuad.setP3(view->contentsToRootView(roundedIntPoint(currentQuad.p3())));
currentQuad.setP4(view->contentsToRootView(roundedIntPoint(currentQuad.p4())));
}
}
RoundedRect::Radii borderRadii;
if (is<RenderBox>(*renderer))
borderRadii = downcast<RenderBox>(*renderer).borderRadii();
bool nodeHasBuiltInClickHandling = is<HTMLFormControlElement>(*node) || is<HTMLAnchorElement>(*node) || is<HTMLLabelElement>(*node) || is<HTMLSummaryElement>(*node) || node->isLink();