/
WebPageIOS.mm
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WebPageIOS.mm
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/*
* Copyright (C) 2012-2015 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)
#import "AccessibilityIOS.h"
#import "AssistedNodeInformation.h"
#import "DataReference.h"
#import "DrawingArea.h"
#import "EditingRange.h"
#import "EditorState.h"
#import "GestureTypes.h"
#import "InteractionInformationAtPosition.h"
#import "PluginView.h"
#import "RemoteLayerTreeDrawingArea.h"
#import "UserData.h"
#import "VisibleContentRectUpdateInfo.h"
#import "WKAccessibilityWebPageObjectIOS.h"
#import "WebChromeClient.h"
#import "WebCoreArgumentCoders.h"
#import "WebFrame.h"
#import "WebImage.h"
#import "WebKitSystemInterface.h"
#import "WebPageProxyMessages.h"
#import "WebProcess.h"
#import <CoreText/CTFont.h>
#import <WebCore/Chrome.h>
#import <WebCore/DiagnosticLoggingClient.h>
#import <WebCore/DiagnosticLoggingKeys.h>
#import <WebCore/Element.h>
#import <WebCore/ElementAncestorIterator.h>
#import <WebCore/EventHandler.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/HTMLElementTypeHelpers.h>
#import <WebCore/HTMLFormElement.h>
#import <WebCore/HTMLImageElement.h>
#import <WebCore/HTMLInputElement.h>
#import <WebCore/HTMLOptGroupElement.h>
#import <WebCore/HTMLOptionElement.h>
#import <WebCore/HTMLOptionElement.h>
#import <WebCore/HTMLParserIdioms.h>
#import <WebCore/HTMLSelectElement.h>
#import <WebCore/HTMLTextAreaElement.h>
#import <WebCore/HistoryItem.h>
#import <WebCore/HitTestResult.h>
#import <WebCore/KeyboardEvent.h>
#import <WebCore/MainFrame.h>
#import <WebCore/MediaSessionManagerIOS.h>
#import <WebCore/MemoryPressureHandler.h>
#import <WebCore/Node.h>
#import <WebCore/NotImplemented.h>
#import <WebCore/Page.h>
#import <WebCore/Pasteboard.h>
#import <WebCore/PlatformKeyboardEvent.h>
#import <WebCore/PlatformMouseEvent.h>
#import <WebCore/RenderBlock.h>
#import <WebCore/RenderImage.h>
#import <WebCore/RenderThemeIOS.h>
#import <WebCore/RenderView.h>
#import <WebCore/SharedBuffer.h>
#import <WebCore/StyleProperties.h>
#import <WebCore/TextIndicator.h>
#import <WebCore/TextIterator.h>
#import <WebCore/VisibleUnits.h>
#import <WebCore/WKContentObservation.h>
#import <WebCore/WebEvent.h>
#import <wtf/MathExtras.h>
#import <wtf/TemporaryChange.h>
using namespace WebCore;
namespace WebKit {
const int blockSelectionStartWidth = 100;
const int blockSelectionStartHeight = 100;
void WebPage::platformInitialize()
{
platformInitializeAccessibility();
}
void WebPage::platformDetach()
{
[m_mockAccessibilityElement setWebPage:nullptr];
}
void WebPage::platformInitializeAccessibility()
{
m_mockAccessibilityElement = adoptNS([[WKAccessibilityWebPageObject alloc] init]);
[m_mockAccessibilityElement setWebPage:this];
NSData *remoteToken = newAccessibilityRemoteToken([NSUUID UUID]);
IPC::DataReference dataToken = IPC::DataReference(reinterpret_cast<const uint8_t*>([remoteToken bytes]), [remoteToken length]);
send(Messages::WebPageProxy::RegisterWebProcessAccessibilityToken(dataToken));
}
void WebPage::platformPreferencesDidChange(const WebPreferencesStore&)
{
notImplemented();
}
void WebPage::platformEditorState(Frame& frame, EditorState& result, IncludePostLayoutDataHint shouldIncludePostLayoutData) const
{
if (frame.editor().hasComposition()) {
RefPtr<Range> compositionRange = frame.editor().compositionRange();
Vector<WebCore::SelectionRect> compositionRects;
if (compositionRange) {
compositionRange->collectSelectionRects(compositionRects);
if (compositionRects.size())
result.firstMarkedRect = compositionRects[0].rect();
if (compositionRects.size() > 1)
result.lastMarkedRect = compositionRects.last().rect();
else
result.lastMarkedRect = result.firstMarkedRect;
result.markedText = plainTextReplacingNoBreakSpace(compositionRange.get());
}
}
// We only set the remaining EditorState entries if the layout is done. To compute these
// entries, we need the layout to be done and we don't want to trigger a synchronous
// layout as this would be bad for performance. If we have a composition, we send everything
// right away as the UIProcess needs the caretRects ASAP for marked text.
if (shouldIncludePostLayoutData == IncludePostLayoutDataHint::No && !frame.editor().hasComposition()) {
result.isMissingPostLayoutData = true;
return;
}
auto& postLayoutData = result.postLayoutData();
FrameView* view = frame.view();
const VisibleSelection& selection = frame.selection().selection();
if (selection.isCaret()) {
postLayoutData.caretRectAtStart = view->contentsToRootView(frame.selection().absoluteCaretBounds());
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);
Node* root = selection.rootEditableElement();
postLayoutData.hasContent = root && root->hasChildNodes() && !isEndOfEditableOrNonEditableContent(firstPositionInNode(root));
}
} else if (selection.isRange()) {
postLayoutData.caretRectAtStart = view->contentsToRootView(VisiblePosition(selection.start()).absoluteCaretBounds());
postLayoutData.caretRectAtEnd = view->contentsToRootView(VisiblePosition(selection.end()).absoluteCaretBounds());
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;
if (selectedText.length() <= maxSelectedTextLength)
postLayoutData.wordAtSelection = selectedText;
}
// FIXME: We should disallow replace when the string contains only CJ characters.
postLayoutData.isReplaceAllowed = result.isContentEditable && !result.isInPasswordField && !selectedText.containsOnlyWhitespace();
}
if (!selection.isNone()) {
if (m_assistedNode && m_assistedNode->renderer())
postLayoutData.selectionClipRect = view->contentsToRootView(m_assistedNode->renderer()->absoluteBoundingBoxRect());
Node* nodeToRemove;
if (RenderStyle* style = Editor::styleForSelectionStart(&frame, nodeToRemove)) {
CTFontRef font = style->fontCascade().primaryFont().getCTFont();
CTFontSymbolicTraits traits = font ? CTFontGetSymbolicTraits(font) : 0;
if (traits & kCTFontTraitBold)
postLayoutData.typingAttributes |= AttributeBold;
if (traits & kCTFontTraitItalic)
postLayoutData.typingAttributes |= AttributeItalics;
RefPtr<EditingStyle> typingStyle = frame.selection().typingStyle();
if (typingStyle && typingStyle->style()) {
String value = typingStyle->style()->getPropertyValue(CSSPropertyWebkitTextDecorationsInEffect);
if (value.contains("underline"))
postLayoutData.typingAttributes |= AttributeUnderline;
} else {
if (style->textDecorationsInEffect() & TextDecorationUnderline)
postLayoutData.typingAttributes |= AttributeUnderline;
}
if (nodeToRemove)
nodeToRemove->remove(ASSERT_NO_EXCEPTION);
}
}
}
FloatSize WebPage::screenSize() const
{
return m_screenSize;
}
FloatSize WebPage::availableScreenSize() const
{
return m_availableScreenSize;
}
void WebPage::viewportPropertiesDidChange(const ViewportArguments& viewportArguments)
{
if (m_viewportConfiguration.viewportArguments() == viewportArguments)
return;
m_viewportConfiguration.setViewportArguments(viewportArguments);
viewportConfigurationChanged();
}
void WebPage::didReceiveMobileDocType(bool isMobileDoctype)
{
if (isMobileDoctype)
m_viewportConfiguration.setDefaultConfiguration(ViewportConfiguration::xhtmlMobileParameters());
else
resetViewportDefaultConfiguration(m_mainFrame.get());
}
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());
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)
{
double overscaledWidth = exposedRect.width();
double missingHorizonalMargin = exposedRect.width() * exposedRectScale / newScale - overscaledWidth;
double overscaledHeight = exposedRect.height();
double missingVerticalMargin = exposedRect.height() * exposedRectScale / newScale - overscaledHeight;
return FloatRect(exposedRect.x() - missingHorizonalMargin / 2, exposedRect.y() - missingVerticalMargin / 2, exposedRect.width() + missingHorizonalMargin, exposedRect.height() + missingVerticalMargin);
}
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();
FloatSize currentMinimumLayoutSizeInScrollViewCoordinates = m_viewportConfiguration.minimumLayoutSize();
if (historyItem.minimumLayoutSizeInScrollViewCoordinates() == currentMinimumLayoutSizeInScrollViewCoordinates) {
float boundedScale = std::min<float>(m_viewportConfiguration.maximumScale(), std::max<float>(m_viewportConfiguration.minimumScale(), historyItem.pageScaleFactor()));
scalePage(boundedScale, IntPoint());
m_drawingArea->setExposedContentRect(historyItem.exposedContentRect());
send(Messages::WebPageProxy::RestorePageState(historyItem.exposedContentRect(), boundedScale));
} else {
IntSize oldContentSize = historyItem.contentSize();
FrameView& frameView = *m_page->mainFrame().view();
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);
FloatPoint newCenter;
if (!oldContentSize.isEmpty() && !newContentSize.isEmpty() && newContentSize != oldContentSize)
newCenter = relativeCenterAfterContentSizeChange(historyItem.unobscuredContentRect(), oldContentSize, newContentSize);
else
newCenter = FloatRect(historyItem.unobscuredContentRect()).center();
FloatSize unobscuredRectAtNewScale = frameView.customSizeForResizeEvent();
unobscuredRectAtNewScale.scale(1 / newScale, 1 / newScale);
FloatRect oldExposedRect = frameView.exposedContentRect();
FloatRect adjustedExposedRect = adjustExposedRectForNewScale(oldExposedRect, m_page->pageScaleFactor(), newScale);
FloatPoint oldCenter = adjustedExposedRect.center();
adjustedExposedRect.move(newCenter - oldCenter);
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();
}
bool WebPage::allowsUserScaling() const
{
return m_viewportConfiguration.allowsUserScaling();
}
bool WebPage::handleEditingKeyboardEvent(KeyboardEvent* event)
{
const PlatformKeyboardEvent* platformEvent = event->keyEvent();
if (!platformEvent)
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_pageID);
if (!sendResult)
return false;
return eventWasHandled;
}
void WebPage::sendComplexTextInputToPlugin(uint64_t, const String&)
{
notImplemented();
}
void WebPage::performDictionaryLookupAtLocation(const FloatPoint&)
{
notImplemented();
}
void WebPage::performDictionaryLookupForSelection(Frame*, const VisibleSelection&, TextIndicatorPresentationTransition)
{
notImplemented();
}
void WebPage::performDictionaryLookupForRange(Frame*, Range&, NSDictionary *, TextIndicatorPresentationTransition)
{
notImplemented();
}
bool WebPage::performNonEditingBehaviorForSelector(const String&, WebCore::KeyboardEvent*)
{
notImplemented();
return false;
}
bool WebPage::performDefaultBehaviorForKeyEvent(const WebKeyboardEvent&)
{
notImplemented();
return false;
}
void WebPage::getLookupContextAtPoint(const WebCore::IntPoint point, uint64_t callbackID)
{
Frame& frame = m_page->focusController().focusedOrMainFrame();
VisiblePosition position = frame.visiblePositionForPoint(point);
String resultString;
if (!position.isNull()) {
// As context, we are going to use 250 characters of text before and after the point.
RefPtr<Range> fullCharacterRange = rangeExpandedAroundPositionByCharacters(position, 250);
if (fullCharacterRange)
resultString = plainText(fullCharacterRange.get());
}
send(Messages::WebPageProxy::StringCallback(resultString, callbackID));
}
NSObject *WebPage::accessibilityObjectForMainFramePlugin()
{
if (!m_page)
return 0;
if (PluginView* pluginView = pluginViewForFrame(&m_page->mainFrame()))
return pluginView->accessibilityObject();
return 0;
}
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&, bool&)
{
notImplemented();
}
void WebPage::getStringSelectionForPasteboard(String&)
{
notImplemented();
}
void WebPage::getDataSelectionForPasteboard(const String, SharedMemory::Handle&, uint64_t&)
{
notImplemented();
}
WKAccessibilityWebPageObject* WebPage::accessibilityRemoteObject()
{
notImplemented();
return 0;
}
bool WebPage::platformHasLocalDataForURL(const WebCore::URL&)
{
notImplemented();
return false;
}
String WebPage::cachedSuggestedFilenameForURL(const URL&)
{
notImplemented();
return String();
}
String WebPage::cachedResponseMIMETypeForURL(const URL&)
{
notImplemented();
return String();
}
PassRefPtr<SharedBuffer> WebPage::cachedResponseDataForURL(const URL&)
{
notImplemented();
return 0;
}
bool WebPage::platformCanHandleRequest(const WebCore::ResourceRequest&)
{
notImplemented();
return false;
}
void WebPage::shouldDelayWindowOrderingEvent(const WebKit::WebMouseEvent&, bool&)
{
notImplemented();
}
void WebPage::acceptsFirstMouse(int, const WebKit::WebMouseEvent&, bool&)
{
notImplemented();
}
void WebPage::computePagesForPrintingPDFDocument(uint64_t, 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()
{
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().ignoreCompositionSelectionChange() && (frame.editor().hasComposition() || !frame.selection().selection().isNone()))
didChangeSelection();
}
void WebPage::handleSyntheticClick(Node* nodeRespondingToClick, const WebCore::FloatPoint& location)
{
IntPoint roundedAdjustedPoint = roundedIntPoint(location);
Frame& mainframe = m_page->mainFrame();
WKBeginObservingContentChanges(true);
mainframe.eventHandler().mouseMoved(PlatformMouseEvent(roundedAdjustedPoint, roundedAdjustedPoint, NoButton, PlatformEvent::MouseMoved, 0, false, false, false, false, 0, WebCore::ForceAtClick));
mainframe.document()->updateStyleIfNeeded();
WKStopObservingContentChanges();
m_pendingSyntheticClickNode = nullptr;
m_pendingSyntheticClickLocation = FloatPoint();
switch (WKObservedContentChange()) {
case WKContentVisibilityChange:
// The move event caused new contents to appear. Don't send the click event.
return;
case WKContentIndeterminateChange:
// Wait for callback to completePendingSyntheticClickForContentChangeObserver() to decide whether to send the click event.
m_pendingSyntheticClickNode = nodeRespondingToClick;
m_pendingSyntheticClickLocation = location;
return;
case WKContentNoChange:
completeSyntheticClick(nodeRespondingToClick, location);
return;
}
ASSERT_NOT_REACHED();
}
void WebPage::completePendingSyntheticClickForContentChangeObserver()
{
if (!m_pendingSyntheticClickNode)
return;
// Only dispatch the click if the document didn't get changed by any timers started by the move event.
if (WKObservedContentChange() == WKContentNoChange)
completeSyntheticClick(m_pendingSyntheticClickNode.get(), m_pendingSyntheticClickLocation);
m_pendingSyntheticClickNode = nullptr;
m_pendingSyntheticClickLocation = FloatPoint();
}
void WebPage::completeSyntheticClick(Node* nodeRespondingToClick, const WebCore::FloatPoint& location)
{
IntPoint roundedAdjustedPoint = roundedIntPoint(location);
Frame& mainframe = m_page->mainFrame();
RefPtr<Frame> oldFocusedFrame = m_page->focusController().focusedFrame();
RefPtr<Element> oldFocusedElement = oldFocusedFrame ? oldFocusedFrame->document()->focusedElement() : nullptr;
m_userIsInteracting = true;
bool tapWasHandled = false;
m_lastInteractionLocation = roundedAdjustedPoint;
tapWasHandled |= mainframe.eventHandler().handleMousePressEvent(PlatformMouseEvent(roundedAdjustedPoint, roundedAdjustedPoint, LeftButton, PlatformEvent::MousePressed, 1, false, false, false, false, 0, WebCore::ForceAtClick));
tapWasHandled |= mainframe.eventHandler().handleMouseReleaseEvent(PlatformMouseEvent(roundedAdjustedPoint, roundedAdjustedPoint, LeftButton, PlatformEvent::MouseReleased, 1, false, false, false, false, 0, WebCore::ForceAtClick));
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)
elementDidFocus(newFocusedElement.get());
m_userIsInteracting = false;
if (!tapWasHandled || !nodeRespondingToClick || !nodeRespondingToClick->isElementNode())
send(Messages::WebPageProxy::DidNotHandleTapAsClick(roundedIntPoint(location)));
}
void WebPage::handleTap(const IntPoint& point, uint64_t lastLayerTreeTransactionId)
{
FloatPoint adjustedPoint;
Node* nodeRespondingToClick = m_page->mainFrame().nodeRespondingToClickEvents(point, adjustedPoint);
Frame* frameRespondingToClick = nodeRespondingToClick ? nodeRespondingToClick->document().frame() : nullptr;
if (!frameRespondingToClick || lastLayerTreeTransactionId < WebFrame::fromCoreFrame(*frameRespondingToClick)->firstLayerTreeTransactionIDAfterDidCommitLoad())
send(Messages::WebPageProxy::DidNotHandleTapAsClick(roundedIntPoint(m_potentialTapLocation)));
else
handleSyntheticClick(nodeRespondingToClick, adjustedPoint);
}
void WebPage::sendTapHighlightForNodeIfNecessary(uint64_t requestID, Node* node)
{
#if ENABLE(TOUCH_EVENTS)
if (!node)
return;
if (is<Element>(*node)) {
ASSERT(m_page);
m_page->mainFrame().loader().client().prefetchDNS(downcast<Element>(*node).absoluteLinkURL().host());
}
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();
send(Messages::WebPageProxy::DidGetTapHighlightGeometries(requestID, highlightColor, quads, roundedIntSize(borderRadii.topLeft()), roundedIntSize(borderRadii.topRight()), roundedIntSize(borderRadii.bottomLeft()), roundedIntSize(borderRadii.bottomRight())));
}
#else
UNUSED_PARAM(requestID);
UNUSED_PARAM(node);
#endif
}
void WebPage::potentialTapAtPosition(uint64_t requestID, const WebCore::FloatPoint& position)
{
m_potentialTapNode = m_page->mainFrame().nodeRespondingToClickEvents(position, m_potentialTapLocation);
sendTapHighlightForNodeIfNecessary(requestID, m_potentialTapNode.get());
#if ENABLE(TOUCH_EVENTS)
if (m_potentialTapNode && !m_potentialTapNode->allowsDoubleTapGesture())
send(Messages::WebPageProxy::DisableDoubleTapGesturesDuringTapIfNecessary(requestID));
#endif
}
void WebPage::commitPotentialTap(uint64_t lastLayerTreeTransactionId)
{
if (!m_potentialTapNode || !m_potentialTapNode->renderer()) {
commitPotentialTapFailed();
return;
}
FloatPoint adjustedPoint;
Node* nodeRespondingToClick = m_page->mainFrame().nodeRespondingToClickEvents(m_potentialTapLocation, adjustedPoint);
Frame* frameRespondingToClick = nodeRespondingToClick ? nodeRespondingToClick->document().frame() : nullptr;
if (!frameRespondingToClick || lastLayerTreeTransactionId < WebFrame::fromCoreFrame(*frameRespondingToClick)->firstLayerTreeTransactionIDAfterDidCommitLoad()) {
commitPotentialTapFailed();
return;
}
if (m_potentialTapNode == nodeRespondingToClick)
handleSyntheticClick(nodeRespondingToClick, adjustedPoint);
else
commitPotentialTapFailed();
m_potentialTapNode = nullptr;
m_potentialTapLocation = FloatPoint();
}
void WebPage::commitPotentialTapFailed()
{
send(Messages::WebPageProxy::CommitPotentialTapFailed());
send(Messages::WebPageProxy::DidNotHandleTapAsClick(roundedIntPoint(m_potentialTapLocation)));
}
void WebPage::cancelPotentialTap()
{
cancelPotentialTapInFrame(*m_mainFrame);
}
void WebPage::cancelPotentialTapInFrame(WebFrame& frame)
{
if (m_potentialTapNode) {
Frame* potentialTapFrame = m_potentialTapNode->document().frame();
if (potentialTapFrame && !potentialTapFrame->tree().isDescendantOf(frame.coreFrame()))
return;
}
m_potentialTapNode = nullptr;
m_potentialTapLocation = FloatPoint();
}
void WebPage::tapHighlightAtPosition(uint64_t requestID, const FloatPoint& position)
{
Frame& mainframe = m_page->mainFrame();
FloatPoint adjustedPoint;
sendTapHighlightForNodeIfNecessary(requestID, mainframe.nodeRespondingToClickEvents(position, adjustedPoint));
}
void WebPage::inspectorNodeSearchMovedToPosition(const FloatPoint& position)
{
IntPoint adjustedPoint = roundedIntPoint(position);
Frame& mainframe = m_page->mainFrame();
mainframe.eventHandler().mouseMoved(PlatformMouseEvent(adjustedPoint, adjustedPoint, NoButton, PlatformEvent::MouseMoved, 0, false, false, false, false, 0, 0));
mainframe.document()->updateStyleIfNeeded();
}
void WebPage::inspectorNodeSearchEndedAtPosition(const FloatPoint& position)
{
if (Node* node = m_page->mainFrame().deepestNodeAtLocation(position))
node->inspect();
}
void WebPage::blurAssistedNode()
{
if (is<Element>(m_assistedNode.get()))
downcast<Element>(*m_assistedNode).blur();
}
void WebPage::setAssistedNodeValue(const String& value)
{
if (is<HTMLInputElement>(m_assistedNode.get())) {
HTMLInputElement& element = downcast<HTMLInputElement>(*m_assistedNode);
element.setValue(value, DispatchInputAndChangeEvent);
}
// FIXME: should also handle the case of HTMLSelectElement.
}
void WebPage::setAssistedNodeValueAsNumber(double value)
{
if (is<HTMLInputElement>(m_assistedNode.get())) {
HTMLInputElement& element = downcast<HTMLInputElement>(*m_assistedNode);
element.setValueAsNumber(value, ASSERT_NO_EXCEPTION, DispatchInputAndChangeEvent);
}
}
void WebPage::setAssistedNodeSelectedIndex(uint32_t index, bool allowMultipleSelection)
{
if (!is<HTMLSelectElement>(m_assistedNode.get()))
return;
HTMLSelectElement& select = downcast<HTMLSelectElement>(*m_assistedNode);
select.optionSelectedByUser(index, true, allowMultipleSelection);
}
void WebPage::showInspectorHighlight(const WebCore::Highlight& highlight)
{
send(Messages::WebPageProxy::ShowInspectorHighlight(highlight));
}
void WebPage::hideInspectorHighlight()
{
send(Messages::WebPageProxy::HideInspectorHighlight());
}
void WebPage::showInspectorIndication()
{
send(Messages::WebPageProxy::ShowInspectorIndication());
}
void WebPage::hideInspectorIndication()
{
send(Messages::WebPageProxy::HideInspectorIndication());
}
void WebPage::enableInspectorNodeSearch()
{
send(Messages::WebPageProxy::EnableInspectorNodeSearch());
}
void WebPage::disableInspectorNodeSearch()
{
send(Messages::WebPageProxy::DisableInspectorNodeSearch());
}
static FloatQuad innerFrameQuad(const Frame& frame, const Node& assistedNode)
{
frame.document()->updateLayoutIgnorePendingStylesheets();
RenderElement* renderer = nullptr;
if (assistedNode.hasTagName(HTMLNames::textareaTag) || assistedNode.hasTagName(HTMLNames::inputTag) || assistedNode.hasTagName(HTMLNames::selectTag))
renderer = downcast<RenderElement>(assistedNode.renderer());
else if (Element* rootEditableElement = assistedNode.rootEditableElement())
renderer = rootEditableElement->renderer();
if (!renderer)
return FloatQuad();
RenderStyle& style = renderer->style();
IntRect boundingBox = renderer->absoluteBoundingBoxRect(true /* use transforms*/);
boundingBox.move(style.borderLeftWidth(), style.borderTopWidth());
boundingBox.setWidth(boundingBox.width() - style.borderLeftWidth() - style.borderRightWidth());
boundingBox.setHeight(boundingBox.height() - style.borderBottomWidth() - style.borderTopWidth());
return FloatQuad(boundingBox);
}
static IntPoint constrainPoint(const IntPoint& point, const Frame& frame, const Node& assistedNode)
{
ASSERT(&assistedNode.document() == frame.document());
const int DEFAULT_CONSTRAIN_INSET = 2;
IntRect innerFrame = innerFrameQuad(frame, assistedNode).enclosingBoundingBox();
IntPoint constrainedPoint = point;
int minX = innerFrame.x() + DEFAULT_CONSTRAIN_INSET;
int maxX = innerFrame.maxX() - DEFAULT_CONSTRAIN_INSET;
int minY = innerFrame.y() + DEFAULT_CONSTRAIN_INSET;
int maxY = innerFrame.maxY() - DEFAULT_CONSTRAIN_INSET;
if (point.x() < minX)
constrainedPoint.setX(minX);
else if (point.x() > maxX)
constrainedPoint.setX(maxX);
if (point.y() < minY)
constrainedPoint.setY(minY);
else if (point.y() >= maxY)
constrainedPoint.setY(maxY);
return constrainedPoint;
}
static IntRect selectionBoxForRange(WebCore::Range* range)
{
if (!range)
return IntRect();
IntRect boundingRect;
Vector<SelectionRect> selectionRects;
range->collectSelectionRects(selectionRects);
unsigned size = selectionRects.size();
for (unsigned i = 0; i < size; ++i) {
const IntRect &coreRect = selectionRects[i].rect();
if (!i)
boundingRect = coreRect;
else
boundingRect.unite(coreRect);
}
return boundingRect;
}
PassRefPtr<Range> WebPage::rangeForWebSelectionAtPosition(const IntPoint& point, const VisiblePosition& position, SelectionFlags& flags)
{
HitTestResult result = m_page->mainFrame().eventHandler().hitTestResultAtPoint((point), HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::DisallowShadowContent | HitTestRequest::AllowChildFrameContent);
Node* currentNode = result.innerNode();
RefPtr<Range> range;
FloatRect boundingRectInScrollViewCoordinates;
if (currentNode->isTextNode()) {
range = enclosingTextUnitOfGranularity(position, ParagraphGranularity, DirectionForward);
if (!range || range->collapsed())
range = Range::create(currentNode->document(), position, position);
if (!range)
return nullptr;
boundingRectInScrollViewCoordinates = selectionBoxForRange(range.get());
boundingRectInScrollViewCoordinates.scale(m_page->pageScaleFactor());
if (boundingRectInScrollViewCoordinates.width() > m_blockSelectionDesiredSize.width() && boundingRectInScrollViewCoordinates.height() > m_blockSelectionDesiredSize.height())
return wordRangeFromPosition(position);
currentNode = range->commonAncestorContainer();
}
if (!currentNode->isElementNode())
currentNode = currentNode->parentElement();
Node* bestChoice = currentNode;
while (currentNode) {
if (currentNode->renderer()) {
boundingRectInScrollViewCoordinates = currentNode->renderer()->absoluteBoundingBoxRect(true);
boundingRectInScrollViewCoordinates.scale(m_page->pageScaleFactor());
if (boundingRectInScrollViewCoordinates.width() > m_blockSelectionDesiredSize.width() && boundingRectInScrollViewCoordinates.height() > m_blockSelectionDesiredSize.height())
break;
bestChoice = currentNode;
}
currentNode = currentNode->parentElement();
}
if (!bestChoice)
return nullptr;
RenderObject* renderer = bestChoice->renderer();
if (!renderer || renderer->style().userSelect() == SELECT_NONE)
return nullptr;
if (renderer->childrenInline() && (is<RenderBlock>(*renderer) && !downcast<RenderBlock>(*renderer).inlineElementContinuation()) && !renderer->isTable()) {
range = enclosingTextUnitOfGranularity(position, WordGranularity, DirectionBackward);
if (range && !range->collapsed())
return range;
}
// If all we could find is a block whose height is very close to the height
// of the visible area, don't use it.
const float adjustmentFactor = .97;
boundingRectInScrollViewCoordinates = renderer->absoluteBoundingBoxRect(true);
if (boundingRectInScrollViewCoordinates.height() > m_page->mainFrame().view()->exposedContentRect().height() * adjustmentFactor)
return nullptr;
flags = IsBlockSelection;
range = Range::create(bestChoice->document());
range->selectNodeContents(bestChoice, ASSERT_NO_EXCEPTION);
return range->collapsed() ? nullptr : range;
}
PassRefPtr<Range> WebPage::rangeForBlockAtPoint(const IntPoint& point)
{
HitTestResult result = m_page->mainFrame().eventHandler().hitTestResultAtPoint((point), HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::DisallowShadowContent | HitTestRequest::IgnoreClipping);
Node* currentNode = result.innerNode();
RefPtr<Range> range;
if (currentNode->isTextNode()) {
range = enclosingTextUnitOfGranularity(m_page->focusController().focusedOrMainFrame().visiblePositionForPoint(point), ParagraphGranularity, DirectionForward);
if (range && !range->collapsed())
return range;
}
if (!currentNode->isElementNode())
currentNode = currentNode->parentElement();
if (!currentNode)
return nullptr;
range = Range::create(currentNode->document());
range->selectNodeContents(currentNode, ASSERT_NO_EXCEPTION);
return range;
}
void WebPage::selectWithGesture(const IntPoint& point, uint32_t granularity, uint32_t gestureType, uint32_t gestureState, bool isInteractingWithAssistedNode, uint64_t callbackID)
{
const Frame& frame = m_page->focusController().focusedOrMainFrame();
VisiblePosition position = visiblePositionInFocusedNodeForPoint(frame, point, isInteractingWithAssistedNode);
if (position.isNull()) {
send(Messages::WebPageProxy::GestureCallback(point, gestureType, gestureState, 0, callbackID));
return;
}
RefPtr<Range> range;
SelectionFlags flags = None;
GestureRecognizerState wkGestureState = static_cast<GestureRecognizerState>(gestureState);
switch (static_cast<GestureType>(gestureType)) {
case GestureType::PhraseBoundary:
{
if (!frame.editor().hasComposition())
break;
RefPtr<Range> markedRange = frame.editor().compositionRange();
if (position < markedRange->startPosition())
position = markedRange->startPosition();
if (position > markedRange->endPosition())
position = markedRange->endPosition();
if (wkGestureState != GestureRecognizerState::Began)
flags = distanceBetweenPositions(markedRange->startPosition(), frame.selection().selection().start()) != distanceBetweenPositions(markedRange->startPosition(), position) ? PhraseBoundaryChanged : None;
else
flags = PhraseBoundaryChanged;
range = Range::create(*frame.document(), position, position);
}
break;
case GestureType::OneFingerTap:
{
VisiblePosition result;
// move the the position at the end of the word
if (atBoundaryOfGranularity(position, LineGranularity, DirectionForward)) {
// Don't cross line boundaries.
result = position;
} else if (withinTextUnitOfGranularity(position, WordGranularity, DirectionForward)) {
// The position lies within a word.
RefPtr<Range> wordRange = enclosingTextUnitOfGranularity(position, WordGranularity, DirectionForward);
if (wordRange) {
result = wordRange->startPosition();
if (distanceBetweenPositions(position, result) > 1)
result = wordRange->endPosition();
}
} else if (atBoundaryOfGranularity(position, WordGranularity, DirectionBackward)) {
// The position is at the end of a word.
result = position;