/*
* Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 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 "Frame.h"
#if PLATFORM(IOS)
#import "AnimationController.h"
#import "BlockExceptions.h"
#import "DOMCSSStyleDeclarationInternal.h"
#import "DOMCore.h"
#import "DOMInternal.h"
#import "DOMNodeInternal.h"
#import "DOMWindow.h"
#import "Document.h"
#import "DocumentMarkerController.h"
#import "Editor.h"
#import "EditorClient.h"
#import "EventHandler.h"
#import "EventNames.h"
#import "FormController.h"
#import "FrameSelection.h"
#import "FrameView.h"
#import "HTMLAreaElement.h"
#import "HTMLDocument.h"
#import "HTMLElement.h"
#import "HTMLNames.h"
#import "HTMLObjectElement.h"
#import "HitTestRequest.h"
#import "HitTestResult.h"
#import "JSDOMWindowBase.h"
#import "MainFrame.h"
#import "NodeRenderStyle.h"
#import "NodeTraversal.h"
#import "Page.h"
#import "PageTransitionEvent.h"
#import "PlatformScreen.h"
#import "PropertySetCSSStyleDeclaration.h"
#import "RenderLayer.h"
#import "RenderLayerCompositor.h"
#import "RenderTextControl.h"
#import "RenderView.h"
#import "RenderedDocumentMarker.h"
#import "TextBoundaries.h"
#import "TextIterator.h"
#import "VisiblePosition.h"
#import "VisibleUnits.h"
#import "WAKWindow.h"
#import "WebCoreSystemInterface.h"
#import <runtime/JSLock.h>
using namespace WebCore::HTMLNames;
using namespace WTF::Unicode;
using JSC::JSLockHolder;
namespace WebCore {
// Create <html><body (style="...")></body></html> doing minimal amount of work.
void Frame::initWithSimpleHTMLDocument(const String& style, const URL& url)
{
m_loader.initForSynthesizedDocument(url);
RefPtr<HTMLDocument> document = HTMLDocument::createSynthesizedDocument(this, url);
document->setCompatibilityMode(DocumentCompatibilityMode::LimitedQuirksMode);
document->createDOMWindow();
setDocument(document);
ExceptionCode ec;
RefPtr<Element> rootElement = document->createElementNS(xhtmlNamespaceURI, ASCIILiteral("html"), ec);
RefPtr<Element> body = document->createElementNS(xhtmlNamespaceURI, ASCIILiteral("body"), ec);
if (!style.isEmpty())
body->setAttribute(HTMLNames::styleAttr, style);
rootElement->appendChild(body, ec);
document->appendChild(rootElement, ec);
}
const ViewportArguments& Frame::viewportArguments() const
{
return m_viewportArguments;
}
void Frame::setViewportArguments(const ViewportArguments& arguments)
{
m_viewportArguments = arguments;
}
// FIXME: Extract the common code in indexCountOfWordPrecedingSelection() and wordsInCurrentParagraph() into a shared function.
int Frame::indexCountOfWordPrecedingSelection(NSString *word) const
{
int result = -1;
if (!page() || page()->selection().isNone())
return result;
RefPtr<Range> searchRange(rangeOfContents(*document()));
VisiblePosition start(page()->selection().start(), page()->selection().affinity());
VisiblePosition oneBeforeStart = start.previous();
setEnd(searchRange.get(), oneBeforeStart.isNotNull() ? oneBeforeStart : start);
int exception = 0;
if (searchRange->collapsed(exception))
return result;
WordAwareIterator it(*searchRange);
while (!it.atEnd()) {
StringView text = it.text();
int length = text.length();
if (length > 1 || !isSpaceOrNewline(text[0])) {
int startOfWordBoundary = 0;
for (int i = 1; i < length; i++) {
if (isSpaceOrNewline(text[i]) || text[i] == 0xA0) {
int wordLength = i - startOfWordBoundary;
RetainPtr<NSString> chunk = text.substring(startOfWordBoundary, wordLength).createNSStringWithoutCopying();
if ([chunk isEqualToString:word])
++result;
startOfWordBoundary += wordLength + 1;
}
}
if (startOfWordBoundary < length) {
RetainPtr<NSString> chunk = text.substring(startOfWordBoundary, length - startOfWordBoundary).createNSStringWithoutCopying();
if ([chunk isEqualToString:word])
++result;
}
}
it.advance();
}
return result + 1;
}
// FIXME: Extract the common code in indexCountOfWordPrecedingSelection() and wordsInCurrentParagraph() into a shared function.
NSArray *Frame::wordsInCurrentParagraph() const
{
document()->updateLayout();
if (!page() || !page()->selection().isCaret())
return nil;
VisiblePosition position(page()->selection().start(), page()->selection().affinity());
VisiblePosition end(position);
if (!isStartOfParagraph(end)) {
VisiblePosition previous = end.previous();
UChar c(previous.characterAfter());
if (!iswpunct(c) && !isSpaceOrNewline(c) && c != 0xA0)
end = startOfWord(end);
}
VisiblePosition start(startOfParagraph(end));
RefPtr<Range> searchRange(rangeOfContents(*document()));
setStart(searchRange.get(), start);
setEnd(searchRange.get(), end);
int exception = 0;
if (searchRange->collapsed(exception))
return nil;
NSMutableArray *words = [NSMutableArray array];
WordAwareIterator it(*searchRange);
while (!it.atEnd()) {
StringView text = it.text();
int length = text.length();
if (length > 1 || !isSpaceOrNewline(text[0])) {
int startOfWordBoundary = 0;
for (int i = 1; i < length; i++) {
if (isSpaceOrNewline(text[i]) || text[i] == 0xA0) {
int wordLength = i - startOfWordBoundary;
if (wordLength > 0) {
RetainPtr<NSString> chunk = text.substring(startOfWordBoundary, wordLength).createNSString();
[words addObject:chunk.get()];
}
startOfWordBoundary += wordLength + 1;
}
}
if (startOfWordBoundary < length) {
RetainPtr<NSString> chunk = text.substring(startOfWordBoundary, length - startOfWordBoundary).createNSString();
[words addObject:chunk.get()];
}
}
it.advance();
}
if ([words count] > 0 && isEndOfParagraph(position) && !isStartOfParagraph(position)) {
VisiblePosition previous = position.previous();
UChar c(previous.characterAfter());
if (!isSpaceOrNewline(c) && c != 0xA0)
[words removeLastObject];
}
return words;
}
#define CHECK_FONT_SIZE 0
#define RECT_LOGGING 0
CGRect Frame::renderRectForPoint(CGPoint point, bool* isReplaced, float* fontSize) const
{
*isReplaced = false;
*fontSize = 0;
if (!m_doc || !m_doc->renderBox())
return CGRectZero;
// FIXME: why this layer check?
RenderLayer* layer = m_doc->renderBox()->layer();
if (!layer)
return CGRectZero;
HitTestResult result = eventHandler().hitTestResultAtPoint(IntPoint(roundf(point.x), roundf(point.y)));
Node* node = result.innerNode();
if (!node)
return CGRectZero;
RenderObject* hitRenderer = node->renderer();
RenderObject* renderer = hitRenderer;
#if RECT_LOGGING
printf("\n%f %f\n", point.x, point.y);
#endif
while (renderer && !renderer->isBody() && !renderer->isRoot()) {
#if RECT_LOGGING
CGRect rect = renderer->absoluteBoundingBoxRect(true);
if (renderer->node()) {
const char *nodeName = renderer->node()->nodeName().ascii().data();
printf("%s %f %f %f %f\n", nodeName, rect.origin.x, rect.origin.y, rect.size.width, rect.size.height);
}
#endif
if (renderer->isRenderBlock() || renderer->isInlineBlockOrInlineTable() || renderer->isReplaced()) {
*isReplaced = renderer->isReplaced();
#if CHECK_FONT_SIZE
for (RenderObject* textRenderer = hitRenderer; textRenderer; textRenderer = textRenderer->traverseNext(hitRenderer)) {
if (textRenderer->isText()) {
*fontSize = textRenderer->font(true).pixelSize();
break;
}
}
#endif
IntRect targetRect = renderer->absoluteBoundingBoxRect(true);
for (Widget* currView = &(renderer->view().frameView()); currView && currView != view(); currView = currView->parent())
targetRect = currView->convertToContainingView(targetRect);
return targetRect;
}
renderer = renderer->parent();
}
return CGRectZero;
}
static Node* ancestorRespondingToScrollWheelEvents(const HitTestResult& hitTestResult, Node* terminationNode, IntRect* nodeBounds)
{
if (nodeBounds)
*nodeBounds = IntRect();
Node* scrollingAncestor = nullptr;
for (Node* node = hitTestResult.innerNode(); node && node != terminationNode && !node->hasTagName(HTMLNames::bodyTag); node = node->parentNode()) {
RenderObject* renderer = node->renderer();
if (!renderer)
continue;
if ((renderer->isTextField() || renderer->isTextArea()) && downcast<RenderTextControl>(*renderer).canScroll()) {
scrollingAncestor = node;
continue;
}
RenderStyle& style = renderer->style();
if (renderer->hasOverflowClip() &&
(style.overflowY() == OAUTO || style.overflowY() == OSCROLL || style.overflowY() == OOVERLAY ||
style.overflowX() == OAUTO || style.overflowX() == OSCROLL || style.overflowX() == OOVERLAY))
scrollingAncestor = node;
}
return scrollingAncestor;
}
static Node* ancestorRespondingToClickEvents(const HitTestResult& hitTestResult, Node* terminationNode, IntRect* nodeBounds)
{
bool bodyHasBeenReached = false;
bool pointerCursorStillValid = true;
if (nodeBounds)
*nodeBounds = IntRect();
Node* pointerCursorNode = nullptr;
for (Node* node = hitTestResult.innerNode(); node && node != terminationNode; node = node->parentNode()) {
ASSERT(!node->isInShadowTree());
// We only accept pointer nodes before reaching the body tag.
if (node->hasTagName(HTMLNames::bodyTag)) {
#if USE(UIKIT_EDITING)
// Make sure we cover the case of an empty editable body.
if (!pointerCursorNode && node->isContentEditable())
pointerCursorNode = node;
#endif
bodyHasBeenReached = true;
pointerCursorStillValid = false;
}
// If we already have a pointer, and we reach a table, don't accept it.
if (pointerCursorNode && (node->hasTagName(HTMLNames::tableTag) || node->hasTagName(HTMLNames::tbodyTag)))
pointerCursorStillValid = false;
// If we haven't reached the body, and we are still paying attention to pointer cursors, and the node has a pointer cursor...
if (pointerCursorStillValid && node->renderStyle() && node->renderStyle()->cursor() == CursorPointer)
pointerCursorNode = node;
// We want the lowest unbroken chain of pointer cursors.
else if (pointerCursorNode)
pointerCursorStillValid = false;
if (node->willRespondToMouseClickEvents() || node->willRespondToMouseMoveEvents()) {
// If we're at the body or higher, use the pointer cursor node (which may be null).
if (bodyHasBeenReached)
node = pointerCursorNode;
// If we are interested about the frame, use it.
if (nodeBounds) {
// This is a check to see whether this node is an area element. The only way this can happen is if this is the first check.
if (node == hitTestResult.innerNode() && node != hitTestResult.innerNonSharedNode() && is<HTMLAreaElement>(*node))
*nodeBounds = snappedIntRect(downcast<HTMLAreaElement>(*node).computeRect(hitTestResult.innerNonSharedNode()->renderer()));
else if (node && node->renderer())
*nodeBounds = node->renderer()->absoluteBoundingBoxRect(true);
}
return node;
}
}
return nullptr;
}
void Frame::betterApproximateNode(const IntPoint& testPoint, NodeQualifier nodeQualifierFunction, Node*& best, Node* failedNode, IntPoint& bestPoint, IntRect& bestRect, const IntRect& testRect)
{
IntRect candidateRect;
Node* candidate = nodeQualifierFunction(eventHandler().hitTestResultAtPoint(testPoint), failedNode, &candidateRect);
// Bail if we have no candidate, or the candidate is already equal to our current best node,
// or our candidate is the avoidedNode and there is a current best node.
if (!candidate || candidate == best)
return;
// The document should never be considered the best alternative.
if (candidate->isDocumentNode())
return;
if (best) {
IntRect bestIntersect = intersection(testRect, bestRect);
IntRect candidateIntersect = intersection(testRect, candidateRect);
// if the candidate intersection is smaller than the current best intersection, bail.
if (candidateIntersect.width() * candidateIntersect.height() <= bestIntersect.width() * bestIntersect.height())
return;
}
// At this point we either don't have a previous best, or our current candidate has a better intersection.
best = candidate;
bestPoint = testPoint;
bestRect = candidateRect;
}
bool Frame::hitTestResultAtViewportLocation(const FloatPoint& viewportLocation, HitTestResult& hitTestResult, IntPoint& center)
{
if (!m_doc || !m_doc->renderView())
return false;
FrameView* view = m_view.get();
if (!view)
return false;
center = view->windowToContents(roundedIntPoint(viewportLocation));
hitTestResult = eventHandler().hitTestResultAtPoint(center);
return true;
}
Node* Frame::qualifyingNodeAtViewportLocation(const FloatPoint& viewportLocation, FloatPoint& adjustedViewportLocation, NodeQualifier nodeQualifierFunction, bool shouldApproximate)
{
adjustedViewportLocation = viewportLocation;
IntPoint testCenter;
HitTestResult candidateInfo;
if (!hitTestResultAtViewportLocation(viewportLocation, candidateInfo, testCenter))
return nullptr;
IntPoint bestPoint = testCenter;
// We have the candidate node at the location, check whether it or one of its ancestors passes
// the qualifier function, which typically checks if the node responds to a particular event type.
Node* approximateNode = nodeQualifierFunction(candidateInfo, 0, 0);
#if USE(UIKIT_EDITING)
if (approximateNode && approximateNode->isContentEditable()) {
// If we are in editable content, we look for the root editable element.
approximateNode = approximateNode->rootEditableElement();
// If we have a focusable node, there is no need to approximate.
if (approximateNode)
shouldApproximate = false;
}
#endif
float scale = page() ? page()->pageScaleFactor() : 1;
float ppiFactor = screenPPIFactor();
static const float unscaledSearchRadius = 15;
int searchRadius = static_cast<int>(unscaledSearchRadius * ppiFactor / scale);
if (approximateNode && shouldApproximate) {
const float testOffsets[] = {
-.3f, -.3f,
-.6f, -.6f,
+.3f, +.3f,
-.9f, -.9f,
};
Node* originalApproximateNode = approximateNode;
for (unsigned n = 0; n < WTF_ARRAY_LENGTH(testOffsets); n += 2) {
IntSize testOffset(testOffsets[n] * searchRadius, testOffsets[n + 1] * searchRadius);
IntPoint testPoint = testCenter + testOffset;
HitTestResult candidateInfo = eventHandler().hitTestResultAtPoint(testPoint);
Node* candidateNode = nodeQualifierFunction(candidateInfo, 0, 0);
if (candidateNode && candidateNode->isDescendantOf(originalApproximateNode)) {
approximateNode = candidateNode;
bestPoint = testPoint;
break;
}
}
} else if (!approximateNode && shouldApproximate) {
// Grab the closest parent element of our failed candidate node.
Node* candidate = candidateInfo.innerNode();
Node* failedNode = candidate;
while (candidate && !candidate->isElementNode())
candidate = candidate->parentNode();
if (candidate)
failedNode = candidate;
// The center point was tested earlier.
const float testOffsets[] = {
-.3f, -.3f,
+.3f, -.3f,
-.3f, +.3f,
+.3f, +.3f,
-.6f, -.6f,
+.6f, -.6f,
-.6f, +.6f,
+.6f, +.6f,
-1.f, 0,
+1.f, 0,
0, +1.f,
0, -1.f,
};
IntRect bestFrame;
IntRect testRect(testCenter, IntSize());
testRect.inflate(searchRadius);
int currentTestRadius = 0;
for (unsigned n = 0; n < WTF_ARRAY_LENGTH(testOffsets); n += 2) {
IntSize testOffset(testOffsets[n] * searchRadius, testOffsets[n + 1] * searchRadius);
IntPoint testPoint = testCenter + testOffset;
int testRadius = std::max(abs(testOffset.width()), abs(testOffset.height()));
if (testRadius > currentTestRadius) {
// Bail out with the best match within a radius
currentTestRadius = testRadius;
if (approximateNode)
break;
}
betterApproximateNode(testPoint, nodeQualifierFunction, approximateNode, failedNode, bestPoint, bestFrame, testRect);
}
}
if (approximateNode) {
IntPoint p = m_view->contentsToWindow(bestPoint);
adjustedViewportLocation = p;
#if USE(UIKIT_EDITING)
if (approximateNode->isContentEditable()) {
// When in editable content, look for the root editable node again,
// since this could be the node found with the approximation.
approximateNode = approximateNode->rootEditableElement();
}
#endif
}
return approximateNode;
}
Node* Frame::deepestNodeAtLocation(const FloatPoint& viewportLocation)
{
IntPoint center;
HitTestResult hitTestResult;
if (!hitTestResultAtViewportLocation(viewportLocation, hitTestResult, center))
return nullptr;
return hitTestResult.innerNode();
}
Node* Frame::nodeRespondingToClickEvents(const FloatPoint& viewportLocation, FloatPoint& adjustedViewportLocation)
{
return qualifyingNodeAtViewportLocation(viewportLocation, adjustedViewportLocation, &ancestorRespondingToClickEvents, true);
}
Node* Frame::nodeRespondingToScrollWheelEvents(const FloatPoint& viewportLocation)
{
FloatPoint adjustedViewportLocation;
return qualifyingNodeAtViewportLocation(viewportLocation, adjustedViewportLocation, &ancestorRespondingToScrollWheelEvents, false);
}
int Frame::preferredHeight() const
{
Document* document = this->document();
if (!document)
return 0;
document->updateLayout();
auto* body = document->bodyOrFrameset();
if (!body)
return 0;
RenderObject* renderer = body->renderer();
if (!is<RenderBlock>(renderer))
return 0;
RenderBlock& block = downcast<RenderBlock>(*renderer);
return block.height() + block.marginTop() + block.marginBottom();
}
int Frame::innerLineHeight(DOMNode* domNode) const
{
if (!domNode)
return 0;
Document* document = this->document();
if (!document)
return 0;
document->updateLayout();
Node* node = core(domNode);
if (!node)
return 0;
RenderObject* renderer = node->renderer();
if (!renderer)
return 0;
return renderer->innerLineHeight();
}
void Frame::updateLayout() const
{
Document* document = this->document();
if (!document)
return;
document->updateLayout();
if (FrameView* view = this->view())
view->adjustViewSize();
}
NSRect Frame::caretRect() const
{
VisibleSelection visibleSelection = selection().selection();
if (visibleSelection.isNone())
return CGRectZero;
return visibleSelection.isCaret() ? selection().absoluteCaretBounds() : VisiblePosition(visibleSelection.end()).absoluteCaretBounds();
}
NSRect Frame::rectForScrollToVisible() const
{
VisibleSelection selection(this->selection().selection());
if (selection.isNone())
return CGRectZero;
if (selection.isCaret())
return caretRect();
return unionRect(selection.visibleStart().absoluteCaretBounds(), selection.visibleEnd().absoluteCaretBounds());
}
DOMCSSStyleDeclaration* Frame::styleAtSelectionStart() const
{
RefPtr<EditingStyle> editingStyle = EditingStyle::styleAtSelectionStart(selection().selection());
if (!editingStyle)
return nullptr;
PropertySetCSSStyleDeclaration* propertySetCSSStyleDeclaration = new PropertySetCSSStyleDeclaration(editingStyle->style());
// The auto-generated code for DOMCSSStyleDeclaration derefs its pointer when it is deallocated.
return kit(static_cast<CSSStyleDeclaration*>(propertySetCSSStyleDeclaration));
}
unsigned Frame::formElementsCharacterCount() const
{
Document* document = this->document();
if (!document)
return 0;
return document->formController().formElementsCharacterCount();
}
void Frame::setTimersPaused(bool paused)
{
JSLockHolder lock(JSDOMWindowBase::commonVM());
setTimersPausedInternal(paused);
}
void Frame::setTimersPausedInternal(bool paused)
{
if (paused) {
++m_timersPausedCount;
if (m_timersPausedCount == 1) {
clearTimers();
if (document())
document()->suspendScheduledTasks(ActiveDOMObject::DocumentWillBePaused);
}
} else {
--m_timersPausedCount;
ASSERT(m_timersPausedCount >= 0);
if (m_timersPausedCount == 0) {
if (document())
document()->resumeScheduledTasks(ActiveDOMObject::DocumentWillBePaused);
// clearTimers() suspended animations and pending relayouts, reschedule if needed.
animation().resumeAnimationsForDocument(document());
if (view())
view()->scheduleRelayout();
}
}
// We need to make sure all subframes' states are up to date.
for (Frame* frame = tree().firstChild(); frame; frame = frame->tree().nextSibling())
frame->setTimersPausedInternal(paused);
}
void Frame::dispatchPageHideEventBeforePause()
{
ASSERT(isMainFrame());
if (!isMainFrame())
return;
for (Frame* frame = this; frame; frame = frame->tree().traverseNext(this))
frame->document()->domWindow()->dispatchEvent(PageTransitionEvent::create(eventNames().pagehideEvent, true), document());
}
void Frame::dispatchPageShowEventBeforeResume()
{
ASSERT(isMainFrame());
if (!isMainFrame())
return;
for (Frame* frame = this; frame; frame = frame->tree().traverseNext(this))
frame->document()->domWindow()->dispatchEvent(PageTransitionEvent::create(eventNames().pageshowEvent, true), document());
}
void Frame::setRangedSelectionBaseToCurrentSelection()
{
m_rangedSelectionBase = selection().selection();
}
void Frame::setRangedSelectionBaseToCurrentSelectionStart()
{
const VisibleSelection& visibleSelection = selection().selection();
m_rangedSelectionBase = VisibleSelection(visibleSelection.start(), visibleSelection.affinity());
}
void Frame::setRangedSelectionBaseToCurrentSelectionEnd()
{
const VisibleSelection& visibleSelection = selection().selection();
m_rangedSelectionBase = VisibleSelection(visibleSelection.end(), visibleSelection.affinity());
}
VisibleSelection Frame::rangedSelectionBase() const
{
return m_rangedSelectionBase;
}
void Frame::clearRangedSelectionInitialExtent()
{
m_rangedSelectionInitialExtent = VisibleSelection();
}
void Frame::setRangedSelectionInitialExtentToCurrentSelectionStart()
{
const VisibleSelection& visibleSelection = selection().selection();
m_rangedSelectionInitialExtent = VisibleSelection(visibleSelection.start(), visibleSelection.affinity());
}
void Frame::setRangedSelectionInitialExtentToCurrentSelectionEnd()
{
const VisibleSelection& visibleSelection = selection().selection();
m_rangedSelectionInitialExtent = VisibleSelection(visibleSelection.end(), visibleSelection.affinity());
}
VisibleSelection Frame::rangedSelectionInitialExtent() const
{
return m_rangedSelectionInitialExtent;
}
void Frame::recursiveSetUpdateAppearanceEnabled(bool enabled)
{
selection().setUpdateAppearanceEnabled(enabled);
for (Frame* child = tree().firstChild(); child; child = child->tree().nextSibling())
child->recursiveSetUpdateAppearanceEnabled(enabled);
}
// FIXME: Break this function up into pieces with descriptive function names so that it's easier to follow.
NSArray *Frame::interpretationsForCurrentRoot() const
{
if (!document())
return nil;
auto* root = selection().selection().selectionType() == VisibleSelection::NoSelection ? document()->bodyOrFrameset() : selection().selection().rootEditableElement();
unsigned rootChildCount = root->countChildNodes();
RefPtr<Range> rangeOfRootContents = Range::create(*document(), createLegacyEditingPosition(root, 0), createLegacyEditingPosition(root, rootChildCount));
auto markersInRoot = document()->markers().markersInRange(rangeOfRootContents.get(), DocumentMarker::DictationPhraseWithAlternatives);
// There are no phrases with alternatives, so there is just one interpretation.
if (markersInRoot.isEmpty())
return [NSArray arrayWithObject:plainText(rangeOfRootContents.get())];
// The number of interpretations will be i1 * i2 * ... * iN, where iX is the number of interpretations for the Xth phrase with alternatives.
size_t interpretationsCount = 1;
for (auto* marker : markersInRoot)
interpretationsCount *= marker->alternatives().size() + 1;
Vector<Vector<UChar>> interpretations;
interpretations.grow(interpretationsCount);
Position precedingTextStartPosition = createLegacyEditingPosition(root, 0);
unsigned combinationsSoFar = 1;
Node* pastLastNode = rangeOfRootContents->pastLastNode();
for (Node* node = rangeOfRootContents->firstNode(); node != pastLastNode; node = NodeTraversal::next(*node)) {
for (auto* marker : document()->markers().markersFor(node, DocumentMarker::MarkerTypes(DocumentMarker::DictationPhraseWithAlternatives))) {
// First, add text that precede the marker.
if (precedingTextStartPosition != createLegacyEditingPosition(node, marker->startOffset())) {
RefPtr<Range> precedingTextRange = Range::create(*document(), precedingTextStartPosition, createLegacyEditingPosition(node, marker->startOffset()));
String precedingText = plainText(precedingTextRange.get());
if (!precedingText.isEmpty()) {
for (auto& interpretation : interpretations)
append(interpretation, precedingText);
}
}
RefPtr<Range> rangeForMarker = Range::create(*document(), createLegacyEditingPosition(node, marker->startOffset()), createLegacyEditingPosition(node, marker->endOffset()));
String visibleTextForMarker = plainText(rangeForMarker.get());
size_t interpretationsCountForCurrentMarker = marker->alternatives().size() + 1;
for (size_t i = 0; i < interpretationsCount; ++i) {
// Determine text for the ith interpretation. It will either be the visible text, or one of its
// alternatives stored in the marker.
size_t indexOfInterpretationForCurrentMarker = (i / combinationsSoFar) % interpretationsCountForCurrentMarker;
if (!indexOfInterpretationForCurrentMarker)
append(interpretations[i], visibleTextForMarker);
else
append(interpretations[i], marker->alternatives().at(i % marker->alternatives().size()));
}
combinationsSoFar *= interpretationsCountForCurrentMarker;
precedingTextStartPosition = createLegacyEditingPosition(node, marker->endOffset());
}
}
// Finally, add any text after the last marker.
RefPtr<Range> afterLastMarkerRange = Range::create(*document(), precedingTextStartPosition, createLegacyEditingPosition(root, rootChildCount));
String textAfterLastMarker = plainText(afterLastMarkerRange.get());
if (!textAfterLastMarker.isEmpty()) {
for (auto& interpretation : interpretations)
append(interpretation, textAfterLastMarker);
}
NSMutableArray *result = [NSMutableArray array];
for (auto& interpretation : interpretations)
[result addObject:adoptNS([[NSString alloc] initWithCharacters:interpretation.data() length:interpretation.size()]).get()];
return result;
}
static bool anyFrameHasTiledLayers(Frame* rootFrame)
{
for (Frame* frame = rootFrame; frame; frame = frame->tree().traverseNext(rootFrame)) {
if (frame->containsTiledBackingLayers())
return true;
}
return false;
}
void Frame::viewportOffsetChanged(ViewportOffsetChangeType changeType)
{
if (changeType == IncrementalScrollOffset) {
if (anyFrameHasTiledLayers(this)) {
if (RenderView* root = contentRenderer())
root->compositor().didChangeVisibleRect();
}
}
if (changeType == CompletedScrollOffset) {
if (RenderView* root = contentRenderer())
root->compositor().updateCompositingLayers(CompositingUpdateOnScroll);
}
}
bool Frame::containsTiledBackingLayers() const
{
if (RenderView* root = contentRenderer())
return root->compositor().hasNonMainLayersWithTiledBacking();
return false;
}
void Frame::overflowScrollPositionChangedForNode(const IntPoint& position, Node* node, bool isUserScroll)
{
RenderObject* renderer = node->renderer();
if (!renderer || !renderer->hasLayer())
return;
RenderLayer& layer = *downcast<RenderBoxModelObject>(*renderer).layer();
layer.setIsUserScroll(isUserScroll);
layer.scrollToOffsetWithoutAnimation(position);
layer.setIsUserScroll(false);
layer.didEndScroll(); // FIXME: Should we always call this?
}
void Frame::resetAllGeolocationPermission()
{
if (document()->domWindow())
document()->domWindow()->resetAllGeolocationPermission();
for (Frame* child = tree().firstChild(); child; child = child->tree().nextSibling())
child->resetAllGeolocationPermission();
}
} // namespace WebCore
#endif // PLATFORM(IOS)