blob: e888c7d81d44b3d70e13f36ecd8f4cdaa6a59c3c [file] [log] [blame]
/*
* Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
* 1999 Lars Knoll <knoll@kde.org>
* 1999 Antti Koivisto <koivisto@kde.org>
* 2000 Simon Hausmann <hausmann@kde.org>
* 2000 Stefan Schimanski <1Stein@gmx.de>
* 2001 George Staikos <staikos@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
* Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) 2008 Eric Seidel <eric@webkit.org>
* Copyright (C) 2008 Google Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "Frame.h"
#include "AnimationController.h"
#include "ApplyStyleCommand.h"
#include "BackForwardController.h"
#include "CSSComputedStyleDeclaration.h"
#include "CSSPropertyNames.h"
#include "CachedCSSStyleSheet.h"
#include "CachedResourceLoader.h"
#include "Chrome.h"
#include "ChromeClient.h"
#include "DOMWindow.h"
#include "DocumentType.h"
#include "Editor.h"
#include "EditorClient.h"
#include "Event.h"
#include "EventHandler.h"
#include "EventNames.h"
#include "FloatQuad.h"
#include "FocusController.h"
#include "FrameDestructionObserver.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "FrameSelection.h"
#include "FrameView.h"
#include "GraphicsContext.h"
#include "GraphicsLayer.h"
#include "HTMLDocument.h"
#include "HTMLFormControlElement.h"
#include "HTMLFormElement.h"
#include "HTMLFrameElementBase.h"
#include "HTMLNames.h"
#include "HTMLTableCellElement.h"
#include "HitTestResult.h"
#include "ImageBuffer.h"
#include "InspectorInstrumentation.h"
#include "JSDOMWindowShell.h"
#include "Logging.h"
#include "MathMLNames.h"
#include "MediaFeatureNames.h"
#include "Navigator.h"
#include "NodeList.h"
#include "NodeTraversal.h"
#include "Page.h"
#include "PageCache.h"
#include "PageGroup.h"
#include "RegularExpression.h"
#include "RenderPart.h"
#include "RenderTableCell.h"
#include "RenderTextControl.h"
#include "RenderTheme.h"
#include "RenderView.h"
#include "RuntimeEnabledFeatures.h"
#include "SVGNames.h"
#include "ScriptController.h"
#include "ScriptSourceCode.h"
#include "ScriptValue.h"
#include "ScrollingCoordinator.h"
#include "Settings.h"
#include "StylePropertySet.h"
#include "TextIterator.h"
#include "TextResourceDecoder.h"
#include "UserContentURLPattern.h"
#include "UserTypingGestureIndicator.h"
#include "VisibleUnits.h"
#include "WebKitFontFamilyNames.h"
#include "XLinkNames.h"
#include "XMLNSNames.h"
#include "XMLNames.h"
#include "htmlediting.h"
#include "markup.h"
#include "npruntime_impl.h"
#include "runtime_root.h"
#include <wtf/PassOwnPtr.h>
#include <wtf/RefCountedLeakCounter.h>
#include <wtf/StdLibExtras.h>
#if USE(ACCELERATED_COMPOSITING)
#include "RenderLayerCompositor.h"
#endif
#if ENABLE(SVG)
#include "SVGDocument.h"
#include "SVGDocumentExtensions.h"
#endif
#if USE(TILED_BACKING_STORE)
#include "TiledBackingStore.h"
#endif
using namespace std;
namespace WebCore {
using namespace HTMLNames;
DEFINE_DEBUG_ONLY_GLOBAL(WTF::RefCountedLeakCounter, frameCounter, ("Frame"));
static inline Frame* parentFromOwnerElement(HTMLFrameOwnerElement* ownerElement)
{
if (!ownerElement)
return 0;
return ownerElement->document()->frame();
}
static inline float parentPageZoomFactor(Frame* frame)
{
Frame* parent = frame->tree()->parent();
if (!parent)
return 1;
return parent->pageZoomFactor();
}
static inline float parentTextZoomFactor(Frame* frame)
{
Frame* parent = frame->tree()->parent();
if (!parent)
return 1;
return parent->textZoomFactor();
}
inline Frame::Frame(Page* page, HTMLFrameOwnerElement* ownerElement, FrameLoaderClient* frameLoaderClient)
: m_page(page)
, m_treeNode(this, parentFromOwnerElement(ownerElement))
, m_loader(this, frameLoaderClient)
, m_navigationScheduler(this)
, m_ownerElement(ownerElement)
, m_script(adoptPtr(new ScriptController(this)))
, m_editor(adoptPtr(new Editor(this)))
, m_selection(adoptPtr(new FrameSelection(this)))
, m_eventHandler(adoptPtr(new EventHandler(this)))
, m_animationController(adoptPtr(new AnimationController(this)))
, m_pageZoomFactor(parentPageZoomFactor(this))
, m_textZoomFactor(parentTextZoomFactor(this))
#if ENABLE(ORIENTATION_EVENTS)
, m_orientation(0)
#endif
, m_inViewSourceMode(false)
, m_activeDOMObjectsAndAnimationsSuspendedCount(0)
{
ASSERT(page);
AtomicString::init();
HTMLNames::init();
QualifiedName::init();
MediaFeatureNames::init();
SVGNames::init();
XLinkNames::init();
MathMLNames::init();
XMLNSNames::init();
XMLNames::init();
WebKitFontFamilyNames::init();
if (!ownerElement) {
#if USE(TILED_BACKING_STORE)
// Top level frame only for now.
setTiledBackingStoreEnabled(page->settings()->tiledBackingStoreEnabled());
#endif
} else {
page->incrementSubframeCount();
ownerElement->setContentFrame(this);
}
#ifndef NDEBUG
frameCounter.increment();
#endif
// Pause future ActiveDOMObjects if this frame is being created while the page is in a paused state.
Frame* parent = parentFromOwnerElement(ownerElement);
if (parent && parent->activeDOMObjectsAndAnimationsSuspended())
suspendActiveDOMObjectsAndAnimations();
}
PassRefPtr<Frame> Frame::create(Page* page, HTMLFrameOwnerElement* ownerElement, FrameLoaderClient* client)
{
RefPtr<Frame> frame = adoptRef(new Frame(page, ownerElement, client));
if (!ownerElement)
page->setMainFrame(frame);
return frame.release();
}
Frame::~Frame()
{
setView(0);
loader()->cancelAndClear();
// FIXME: We should not be doing all this work inside the destructor
#ifndef NDEBUG
frameCounter.decrement();
#endif
disconnectOwnerElement();
HashSet<FrameDestructionObserver*>::iterator stop = m_destructionObservers.end();
for (HashSet<FrameDestructionObserver*>::iterator it = m_destructionObservers.begin(); it != stop; ++it)
(*it)->frameDestroyed();
}
bool Frame::inScope(TreeScope* scope) const
{
ASSERT(scope);
Document* doc = document();
if (!doc)
return false;
HTMLFrameOwnerElement* owner = doc->ownerElement();
if (!owner)
return false;
return owner->treeScope() == scope;
}
void Frame::addDestructionObserver(FrameDestructionObserver* observer)
{
m_destructionObservers.add(observer);
}
void Frame::removeDestructionObserver(FrameDestructionObserver* observer)
{
m_destructionObservers.remove(observer);
}
void Frame::setView(PassRefPtr<FrameView> view)
{
// We the custom scroll bars as early as possible to prevent m_doc->detach()
// from messing with the view such that its scroll bars won't be torn down.
// FIXME: We should revisit this.
if (m_view)
m_view->prepareForDetach();
// Prepare for destruction now, so any unload event handlers get run and the DOMWindow is
// notified. If we wait until the view is destroyed, then things won't be hooked up enough for
// these calls to work.
if (!view && m_doc && m_doc->attached() && !m_doc->inPageCache()) {
// FIXME: We don't call willRemove here. Why is that OK?
m_doc->prepareForDestruction();
}
if (m_view)
m_view->unscheduleRelayout();
eventHandler()->clear();
m_view = view;
// Only one form submission is allowed per view of a part.
// Since this part may be getting reused as a result of being
// pulled from the back/forward cache, reset this flag.
loader()->resetMultipleFormSubmissionProtection();
#if USE(TILED_BACKING_STORE)
if (m_view && tiledBackingStore())
m_view->setPaintsEntireContents(true);
#endif
}
void Frame::setDocument(PassRefPtr<Document> newDoc)
{
ASSERT(!newDoc || newDoc->frame() == this);
if (m_doc && m_doc->attached() && !m_doc->inPageCache()) {
// FIXME: We don't call willRemove here. Why is that OK?
m_doc->detach();
}
m_doc = newDoc;
ASSERT(!m_doc || m_doc->domWindow());
ASSERT(!m_doc || m_doc->domWindow()->frame() == this);
if (m_doc && !m_doc->attached())
m_doc->attach();
if (m_doc) {
m_script->updateDocument();
m_doc->updateViewportArguments();
}
if (m_page && m_page->mainFrame() == this) {
notifyChromeClientWheelEventHandlerCountChanged();
#if ENABLE(TOUCH_EVENTS)
if (m_doc && m_doc->hasTouchEventHandlers())
m_page->chrome()->client()->needTouchEvents(true);
#endif
}
// Suspend document if this frame was created in suspended state.
if (m_doc && activeDOMObjectsAndAnimationsSuspended()) {
m_doc->suspendScriptedAnimationControllerCallbacks();
m_animationController->suspendAnimationsForDocument(m_doc.get());
m_doc->suspendActiveDOMObjects(ActiveDOMObject::PageWillBeSuspended);
}
}
#if ENABLE(ORIENTATION_EVENTS)
void Frame::sendOrientationChangeEvent(int orientation)
{
m_orientation = orientation;
if (Document* doc = document())
doc->dispatchWindowEvent(Event::create(eventNames().orientationchangeEvent, false, false));
}
#endif // ENABLE(ORIENTATION_EVENTS)
Settings* Frame::settings() const
{
return m_page ? m_page->settings() : 0;
}
static PassOwnPtr<RegularExpression> createRegExpForLabels(const Vector<String>& labels)
{
// REVIEW- version of this call in FrameMac.mm caches based on the NSArray ptrs being
// the same across calls. We can't do that.
DEFINE_STATIC_LOCAL(RegularExpression, wordRegExp, ("\\w", TextCaseSensitive));
String pattern("(");
unsigned int numLabels = labels.size();
unsigned int i;
for (i = 0; i < numLabels; i++) {
String label = labels[i];
bool startsWithWordChar = false;
bool endsWithWordChar = false;
if (label.length()) {
startsWithWordChar = wordRegExp.match(label.substring(0, 1)) >= 0;
endsWithWordChar = wordRegExp.match(label.substring(label.length() - 1, 1)) >= 0;
}
if (i)
pattern.append("|");
// Search for word boundaries only if label starts/ends with "word characters".
// If we always searched for word boundaries, this wouldn't work for languages
// such as Japanese.
if (startsWithWordChar)
pattern.append("\\b");
pattern.append(label);
if (endsWithWordChar)
pattern.append("\\b");
}
pattern.append(")");
return adoptPtr(new RegularExpression(pattern, TextCaseInsensitive));
}
String Frame::searchForLabelsAboveCell(RegularExpression* regExp, HTMLTableCellElement* cell, size_t* resultDistanceFromStartOfCell)
{
HTMLTableCellElement* aboveCell = cell->cellAbove();
if (aboveCell) {
// search within the above cell we found for a match
size_t lengthSearched = 0;
for (Node* n = aboveCell->firstChild(); n; n = NodeTraversal::next(n, aboveCell)) {
if (n->isTextNode() && n->renderer() && n->renderer()->style()->visibility() == VISIBLE) {
// For each text chunk, run the regexp
String nodeString = n->nodeValue();
int pos = regExp->searchRev(nodeString);
if (pos >= 0) {
if (resultDistanceFromStartOfCell)
*resultDistanceFromStartOfCell = lengthSearched;
return nodeString.substring(pos, regExp->matchedLength());
}
lengthSearched += nodeString.length();
}
}
}
// Any reason in practice to search all cells in that are above cell?
if (resultDistanceFromStartOfCell)
*resultDistanceFromStartOfCell = notFound;
return String();
}
String Frame::searchForLabelsBeforeElement(const Vector<String>& labels, Element* element, size_t* resultDistance, bool* resultIsInCellAbove)
{
OwnPtr<RegularExpression> regExp(createRegExpForLabels(labels));
// We stop searching after we've seen this many chars
const unsigned int charsSearchedThreshold = 500;
// This is the absolute max we search. We allow a little more slop than
// charsSearchedThreshold, to make it more likely that we'll search whole nodes.
const unsigned int maxCharsSearched = 600;
// If the starting element is within a table, the cell that contains it
HTMLTableCellElement* startingTableCell = 0;
bool searchedCellAbove = false;
if (resultDistance)
*resultDistance = notFound;
if (resultIsInCellAbove)
*resultIsInCellAbove = false;
// walk backwards in the node tree, until another element, or form, or end of tree
int unsigned lengthSearched = 0;
Node* n;
for (n = NodeTraversal::previous(element); n && lengthSearched < charsSearchedThreshold; n = NodeTraversal::previous(n)) {
if (n->hasTagName(formTag)
|| (n->isHTMLElement() && toElement(n)->isFormControlElement()))
{
// We hit another form element or the start of the form - bail out
break;
} else if (n->hasTagName(tdTag) && !startingTableCell) {
startingTableCell = static_cast<HTMLTableCellElement*>(n);
} else if (n->hasTagName(trTag) && startingTableCell) {
String result = searchForLabelsAboveCell(regExp.get(), startingTableCell, resultDistance);
if (!result.isEmpty()) {
if (resultIsInCellAbove)
*resultIsInCellAbove = true;
return result;
}
searchedCellAbove = true;
} else if (n->isTextNode() && n->renderer() && n->renderer()->style()->visibility() == VISIBLE) {
// For each text chunk, run the regexp
String nodeString = n->nodeValue();
// add 100 for slop, to make it more likely that we'll search whole nodes
if (lengthSearched + nodeString.length() > maxCharsSearched)
nodeString = nodeString.right(charsSearchedThreshold - lengthSearched);
int pos = regExp->searchRev(nodeString);
if (pos >= 0) {
if (resultDistance)
*resultDistance = lengthSearched;
return nodeString.substring(pos, regExp->matchedLength());
}
lengthSearched += nodeString.length();
}
}
// If we started in a cell, but bailed because we found the start of the form or the
// previous element, we still might need to search the row above us for a label.
if (startingTableCell && !searchedCellAbove) {
String result = searchForLabelsAboveCell(regExp.get(), startingTableCell, resultDistance);
if (!result.isEmpty()) {
if (resultIsInCellAbove)
*resultIsInCellAbove = true;
return result;
}
}
return String();
}
static String matchLabelsAgainstString(const Vector<String>& labels, const String& stringToMatch)
{
if (stringToMatch.isEmpty())
return String();
String mutableStringToMatch = stringToMatch;
// Make numbers and _'s in field names behave like word boundaries, e.g., "address2"
replace(mutableStringToMatch, RegularExpression("\\d", TextCaseSensitive), " ");
mutableStringToMatch.replace('_', ' ');
OwnPtr<RegularExpression> regExp(createRegExpForLabels(labels));
// Use the largest match we can find in the whole string
int pos;
int length;
int bestPos = -1;
int bestLength = -1;
int start = 0;
do {
pos = regExp->match(mutableStringToMatch, start);
if (pos != -1) {
length = regExp->matchedLength();
if (length >= bestLength) {
bestPos = pos;
bestLength = length;
}
start = pos + 1;
}
} while (pos != -1);
if (bestPos != -1)
return mutableStringToMatch.substring(bestPos, bestLength);
return String();
}
String Frame::matchLabelsAgainstElement(const Vector<String>& labels, Element* element)
{
// Match against the name element, then against the id element if no match is found for the name element.
// See 7538330 for one popular site that benefits from the id element check.
// FIXME: This code is mirrored in FrameMac.mm. It would be nice to make the Mac code call the platform-agnostic
// code, which would require converting the NSArray of NSStrings to a Vector of Strings somewhere along the way.
String resultFromNameAttribute = matchLabelsAgainstString(labels, element->getNameAttribute());
if (!resultFromNameAttribute.isEmpty())
return resultFromNameAttribute;
return matchLabelsAgainstString(labels, element->getAttribute(idAttr));
}
void Frame::setPrinting(bool printing, const FloatSize& pageSize, const FloatSize& originalPageSize, float maximumShrinkRatio, AdjustViewSizeOrNot shouldAdjustViewSize)
{
// In setting printing, we should not validate resources already cached for the document.
// See https://bugs.webkit.org/show_bug.cgi?id=43704
ResourceCacheValidationSuppressor validationSuppressor(m_doc->cachedResourceLoader());
m_doc->setPrinting(printing);
view()->adjustMediaTypeForPrinting(printing);
m_doc->styleResolverChanged(RecalcStyleImmediately);
if (shouldUsePrintingLayout()) {
view()->forceLayoutForPagination(pageSize, originalPageSize, maximumShrinkRatio, shouldAdjustViewSize);
} else {
view()->forceLayout();
if (shouldAdjustViewSize == AdjustViewSize)
view()->adjustViewSize();
}
// Subframes of the one we're printing don't lay out to the page size.
for (RefPtr<Frame> child = tree()->firstChild(); child; child = child->tree()->nextSibling())
child->setPrinting(printing, FloatSize(), FloatSize(), 0, shouldAdjustViewSize);
}
bool Frame::shouldUsePrintingLayout() const
{
// Only top frame being printed should be fit to page size.
// Subframes should be constrained by parents only.
return m_doc->printing() && (!tree()->parent() || !tree()->parent()->m_doc->printing());
}
FloatSize Frame::resizePageRectsKeepingRatio(const FloatSize& originalSize, const FloatSize& expectedSize)
{
FloatSize resultSize;
if (!contentRenderer())
return FloatSize();
if (contentRenderer()->style()->isHorizontalWritingMode()) {
ASSERT(fabs(originalSize.width()) > numeric_limits<float>::epsilon());
float ratio = originalSize.height() / originalSize.width();
resultSize.setWidth(floorf(expectedSize.width()));
resultSize.setHeight(floorf(resultSize.width() * ratio));
} else {
ASSERT(fabs(originalSize.height()) > numeric_limits<float>::epsilon());
float ratio = originalSize.width() / originalSize.height();
resultSize.setHeight(floorf(expectedSize.height()));
resultSize.setWidth(floorf(resultSize.height() * ratio));
}
return resultSize;
}
void Frame::injectUserScripts(UserScriptInjectionTime injectionTime)
{
if (!m_page)
return;
if (loader()->stateMachine()->creatingInitialEmptyDocument() && !settings()->shouldInjectUserScriptsInInitialEmptyDocument())
return;
// Walk the hashtable. Inject by world.
const UserScriptMap* userScripts = m_page->group().userScripts();
if (!userScripts)
return;
UserScriptMap::const_iterator end = userScripts->end();
for (UserScriptMap::const_iterator it = userScripts->begin(); it != end; ++it)
injectUserScriptsForWorld(it->key.get(), *it->value, injectionTime);
}
void Frame::injectUserScriptsForWorld(DOMWrapperWorld* world, const UserScriptVector& userScripts, UserScriptInjectionTime injectionTime)
{
if (userScripts.isEmpty())
return;
Document* doc = document();
if (!doc)
return;
Vector<ScriptSourceCode> sourceCode;
unsigned count = userScripts.size();
for (unsigned i = 0; i < count; ++i) {
UserScript* script = userScripts[i].get();
if (script->injectedFrames() == InjectInTopFrameOnly && ownerElement())
continue;
if (script->injectionTime() == injectionTime && UserContentURLPattern::matchesPatterns(doc->url(), script->whitelist(), script->blacklist()))
m_script->evaluateInWorld(ScriptSourceCode(script->source(), script->url()), world);
}
}
RenderView* Frame::contentRenderer() const
{
return document() ? document()->renderView() : 0;
}
RenderPart* Frame::ownerRenderer() const
{
HTMLFrameOwnerElement* ownerElement = m_ownerElement;
if (!ownerElement)
return 0;
RenderObject* object = ownerElement->renderer();
if (!object)
return 0;
// FIXME: If <object> is ever fixed to disassociate itself from frames
// that it has started but canceled, then this can turn into an ASSERT
// since m_ownerElement would be 0 when the load is canceled.
// https://bugs.webkit.org/show_bug.cgi?id=18585
if (!object->isRenderPart())
return 0;
return toRenderPart(object);
}
Frame* Frame::frameForWidget(const Widget* widget)
{
ASSERT_ARG(widget, widget);
if (RenderWidget* renderer = RenderWidget::find(widget))
if (Node* node = renderer->node())
return node->document()->frame();
// Assume all widgets are either a FrameView or owned by a RenderWidget.
// FIXME: That assumption is not right for scroll bars!
ASSERT_WITH_SECURITY_IMPLICATION(widget->isFrameView());
return toFrameView(widget)->frame();
}
void Frame::clearTimers(FrameView *view, Document *document)
{
if (view) {
view->unscheduleRelayout();
if (view->frame()) {
view->frame()->animation()->suspendAnimationsForDocument(document);
view->frame()->eventHandler()->stopAutoscrollTimer();
}
}
}
void Frame::clearTimers()
{
clearTimers(m_view.get(), document());
}
#if ENABLE(PAGE_VISIBILITY_API)
void Frame::dispatchVisibilityStateChangeEvent()
{
if (m_doc)
m_doc->dispatchVisibilityStateChangeEvent();
Vector<RefPtr<Frame> > childFrames;
for (Frame* child = tree()->firstChild(); child; child = child->tree()->nextSibling())
childFrames.append(child);
for (size_t i = 0; i < childFrames.size(); ++i)
childFrames[i]->dispatchVisibilityStateChangeEvent();
}
#endif
void Frame::willDetachPage()
{
if (Frame* parent = tree()->parent())
parent->loader()->checkLoadComplete();
HashSet<FrameDestructionObserver*>::iterator stop = m_destructionObservers.end();
for (HashSet<FrameDestructionObserver*>::iterator it = m_destructionObservers.begin(); it != stop; ++it)
(*it)->willDetachPage();
// FIXME: It's unclear as to why this is called more than once, but it is,
// so page() could be NULL.
if (page() && page()->focusController()->focusedFrame() == this)
page()->focusController()->setFocusedFrame(0);
if (page() && page()->scrollingCoordinator() && m_view)
page()->scrollingCoordinator()->willDestroyScrollableArea(m_view.get());
script()->clearScriptObjects();
script()->updatePlatformScriptObjects();
}
void Frame::disconnectOwnerElement()
{
if (m_ownerElement) {
if (Document* doc = document())
doc->topDocument()->clearAXObjectCache();
m_ownerElement->clearContentFrame();
if (m_page)
m_page->decrementSubframeCount();
}
m_ownerElement = 0;
}
String Frame::documentTypeString() const
{
if (DocumentType* doctype = document()->doctype())
return createMarkup(doctype);
return String();
}
String Frame::displayStringModifiedByEncoding(const String& str) const
{
return document() ? document()->displayStringModifiedByEncoding(str) : str;
}
VisiblePosition Frame::visiblePositionForPoint(const IntPoint& framePoint)
{
HitTestResult result = eventHandler()->hitTestResultAtPoint(framePoint, HitTestRequest::ReadOnly | HitTestRequest::Active);
Node* node = result.innerNonSharedNode();
if (!node)
return VisiblePosition();
RenderObject* renderer = node->renderer();
if (!renderer)
return VisiblePosition();
VisiblePosition visiblePos = renderer->positionForPoint(result.localPoint());
if (visiblePos.isNull())
visiblePos = firstPositionInOrBeforeNode(node);
return visiblePos;
}
Document* Frame::documentAtPoint(const IntPoint& point)
{
if (!view())
return 0;
IntPoint pt = view()->windowToContents(point);
HitTestResult result = HitTestResult(pt);
if (contentRenderer())
result = eventHandler()->hitTestResultAtPoint(pt);
return result.innerNode() ? result.innerNode()->document() : 0;
}
PassRefPtr<Range> Frame::rangeForPoint(const IntPoint& framePoint)
{
VisiblePosition position = visiblePositionForPoint(framePoint);
if (position.isNull())
return 0;
VisiblePosition previous = position.previous();
if (previous.isNotNull()) {
RefPtr<Range> previousCharacterRange = makeRange(previous, position);
LayoutRect rect = editor().firstRectForRange(previousCharacterRange.get());
if (rect.contains(framePoint))
return previousCharacterRange.release();
}
VisiblePosition next = position.next();
if (RefPtr<Range> nextCharacterRange = makeRange(position, next)) {
LayoutRect rect = editor().firstRectForRange(nextCharacterRange.get());
if (rect.contains(framePoint))
return nextCharacterRange.release();
}
return 0;
}
void Frame::createView(const IntSize& viewportSize, const Color& backgroundColor, bool transparent,
const IntSize& fixedLayoutSize, const IntRect& fixedVisibleContentRect ,
bool useFixedLayout, ScrollbarMode horizontalScrollbarMode, bool horizontalLock,
ScrollbarMode verticalScrollbarMode, bool verticalLock)
{
ASSERT(this);
ASSERT(m_page);
bool isMainFrame = this == m_page->mainFrame();
if (isMainFrame && view())
view()->setParentVisible(false);
setView(0);
RefPtr<FrameView> frameView;
if (isMainFrame) {
frameView = FrameView::create(this, viewportSize);
frameView->setFixedLayoutSize(fixedLayoutSize);
frameView->setFixedVisibleContentRect(fixedVisibleContentRect);
frameView->setUseFixedLayout(useFixedLayout);
} else
frameView = FrameView::create(this);
frameView->setScrollbarModes(horizontalScrollbarMode, verticalScrollbarMode, horizontalLock, verticalLock);
setView(frameView);
if (backgroundColor.isValid())
frameView->updateBackgroundRecursively(backgroundColor, transparent);
if (isMainFrame)
frameView->setParentVisible(true);
if (ownerRenderer())
ownerRenderer()->setWidget(frameView);
if (HTMLFrameOwnerElement* owner = ownerElement())
view()->setCanHaveScrollbars(owner->scrollingMode() != ScrollbarAlwaysOff);
}
#if USE(TILED_BACKING_STORE)
void Frame::setTiledBackingStoreEnabled(bool enabled)
{
if (!enabled) {
m_tiledBackingStore.clear();
return;
}
if (m_tiledBackingStore)
return;
m_tiledBackingStore = adoptPtr(new TiledBackingStore(this));
m_tiledBackingStore->setCommitTileUpdatesOnIdleEventLoop(true);
if (m_view)
m_view->setPaintsEntireContents(true);
}
void Frame::tiledBackingStorePaintBegin()
{
if (!m_view)
return;
m_view->updateLayoutAndStyleIfNeededRecursive();
m_view->flushDeferredRepaints();
}
void Frame::tiledBackingStorePaint(GraphicsContext* context, const IntRect& rect)
{
if (!m_view)
return;
m_view->paintContents(context, rect);
}
void Frame::tiledBackingStorePaintEnd(const Vector<IntRect>& paintedArea)
{
if (!m_page || !m_view)
return;
unsigned size = paintedArea.size();
// Request repaint from the system
for (unsigned n = 0; n < size; ++n)
m_page->chrome()->invalidateContentsAndRootView(m_view->contentsToRootView(paintedArea[n]), false);
}
IntRect Frame::tiledBackingStoreContentsRect()
{
if (!m_view)
return IntRect();
return IntRect(IntPoint(), m_view->contentsSize());
}
IntRect Frame::tiledBackingStoreVisibleRect()
{
if (!m_page)
return IntRect();
return m_page->chrome()->client()->visibleRectForTiledBackingStore();
}
Color Frame::tiledBackingStoreBackgroundColor() const
{
if (!m_view)
return Color();
return m_view->baseBackgroundColor();
}
#endif
String Frame::layerTreeAsText(LayerTreeFlags flags) const
{
#if USE(ACCELERATED_COMPOSITING)
document()->updateLayout();
if (!contentRenderer())
return String();
return contentRenderer()->compositor()->layerTreeAsText(flags);
#else
UNUSED_PARAM(flags);
return String();
#endif
}
String Frame::trackedRepaintRectsAsText() const
{
if (!m_view)
return String();
return m_view->trackedRepaintRectsAsText();
}
void Frame::setPageZoomFactor(float factor)
{
setPageAndTextZoomFactors(factor, m_textZoomFactor);
}
void Frame::setTextZoomFactor(float factor)
{
setPageAndTextZoomFactors(m_pageZoomFactor, factor);
}
void Frame::setPageAndTextZoomFactors(float pageZoomFactor, float textZoomFactor)
{
if (m_pageZoomFactor == pageZoomFactor && m_textZoomFactor == textZoomFactor)
return;
Page* page = this->page();
if (!page)
return;
Document* document = this->document();
if (!document)
return;
m_editor->dismissCorrectionPanelAsIgnored();
#if ENABLE(SVG)
// Respect SVGs zoomAndPan="disabled" property in standalone SVG documents.
// FIXME: How to handle compound documents + zoomAndPan="disabled"? Needs SVG WG clarification.
if (document->isSVGDocument()) {
if (!toSVGDocument(document)->zoomAndPanEnabled())
return;
}
#endif
if (m_pageZoomFactor != pageZoomFactor) {
if (FrameView* view = this->view()) {
// Update the scroll position when doing a full page zoom, so the content stays in relatively the same position.
LayoutPoint scrollPosition = view->scrollPosition();
float percentDifference = (pageZoomFactor / m_pageZoomFactor);
view->setScrollPosition(IntPoint(scrollPosition.x() * percentDifference, scrollPosition.y() * percentDifference));
}
}
m_pageZoomFactor = pageZoomFactor;
m_textZoomFactor = textZoomFactor;
document->recalcStyle(Node::Force);
for (RefPtr<Frame> child = tree()->firstChild(); child; child = child->tree()->nextSibling())
child->setPageAndTextZoomFactors(m_pageZoomFactor, m_textZoomFactor);
if (FrameView* view = this->view()) {
if (document->renderer() && document->renderer()->needsLayout() && view->didFirstLayout())
view->layout();
}
if (page->mainFrame() == this)
pageCache()->markPagesForFullStyleRecalc(page);
}
float Frame::frameScaleFactor() const
{
Page* page = this->page();
// Main frame is scaled with respect to he container but inner frames are not scaled with respect to the main frame.
if (!page || page->mainFrame() != this || page->settings()->applyPageScaleFactorInCompositor())
return 1;
return page->pageScaleFactor();
}
void Frame::suspendActiveDOMObjectsAndAnimations()
{
bool wasSuspended = activeDOMObjectsAndAnimationsSuspended();
m_activeDOMObjectsAndAnimationsSuspendedCount++;
if (wasSuspended)
return;
if (document()) {
document()->suspendScriptedAnimationControllerCallbacks();
animation()->suspendAnimationsForDocument(document());
document()->suspendActiveDOMObjects(ActiveDOMObject::PageWillBeSuspended);
}
}
void Frame::resumeActiveDOMObjectsAndAnimations()
{
ASSERT(activeDOMObjectsAndAnimationsSuspended());
m_activeDOMObjectsAndAnimationsSuspendedCount--;
if (activeDOMObjectsAndAnimationsSuspended())
return;
if (document()) {
document()->resumeActiveDOMObjects();
animation()->resumeAnimationsForDocument(document());
document()->resumeScriptedAnimationControllerCallbacks();
}
}
#if USE(ACCELERATED_COMPOSITING)
void Frame::deviceOrPageScaleFactorChanged()
{
for (RefPtr<Frame> child = tree()->firstChild(); child; child = child->tree()->nextSibling())
child->deviceOrPageScaleFactorChanged();
RenderView* root = contentRenderer();
if (root && root->compositor())
root->compositor()->deviceOrPageScaleFactorChanged();
m_page->chrome()->client()->deviceOrPageScaleFactorChanged();
}
#endif
void Frame::notifyChromeClientWheelEventHandlerCountChanged() const
{
// Ensure that this method is being called on the main frame of the page.
ASSERT(m_page && m_page->mainFrame() == this);
unsigned count = 0;
for (const Frame* frame = this; frame; frame = frame->tree()->traverseNext()) {
if (frame->document())
count += frame->document()->wheelEventHandlerCount();
}
m_page->chrome()->client()->numWheelEventHandlersChanged(count);
}
bool Frame::isURLAllowed(const KURL& url) const
{
// We allow one level of self-reference because some sites depend on that,
// but we don't allow more than one.
if (m_page->subframeCount() >= Page::maxNumberOfFrames)
return false;
bool foundSelfReference = false;
for (const Frame* frame = this; frame; frame = frame->tree()->parent()) {
if (equalIgnoringFragmentIdentifier(frame->document()->url(), url)) {
if (foundSelfReference)
return false;
foundSelfReference = true;
}
}
return true;
}
#if !PLATFORM(MAC) && !PLATFORM(WIN)
struct ScopedFramePaintingState {
ScopedFramePaintingState(Frame* frame, Node* node)
: frame(frame)
, node(node)
, paintBehavior(frame->view()->paintBehavior())
, backgroundColor(frame->view()->baseBackgroundColor())
{
ASSERT(!node || node->renderer());
if (node)
node->renderer()->updateDragState(true);
}
~ScopedFramePaintingState()
{
if (node && node->renderer())
node->renderer()->updateDragState(false);
frame->view()->setPaintBehavior(paintBehavior);
frame->view()->setBaseBackgroundColor(backgroundColor);
frame->view()->setNodeToDraw(0);
}
Frame* frame;
Node* node;
PaintBehavior paintBehavior;
Color backgroundColor;
};
DragImageRef Frame::nodeImage(Node* node)
{
if (!node->renderer())
return 0;
const ScopedFramePaintingState state(this, node);
m_view->setPaintBehavior(state.paintBehavior | PaintBehaviorFlattenCompositingLayers);
// When generating the drag image for an element, ignore the document background.
m_view->setBaseBackgroundColor(Color::transparent);
m_doc->updateLayout();
m_view->setNodeToDraw(node); // Enable special sub-tree drawing mode.
// Document::updateLayout may have blown away the original RenderObject.
RenderObject* renderer = node->renderer();
if (!renderer)
return 0;
LayoutRect topLevelRect;
IntRect paintingRect = pixelSnappedIntRect(renderer->paintingRootRect(topLevelRect));
float deviceScaleFactor = 1;
if (m_page)
deviceScaleFactor = m_page->deviceScaleFactor();
paintingRect.setWidth(paintingRect.width() * deviceScaleFactor);
paintingRect.setHeight(paintingRect.height() * deviceScaleFactor);
OwnPtr<ImageBuffer> buffer(ImageBuffer::create(paintingRect.size(), deviceScaleFactor, ColorSpaceDeviceRGB));
if (!buffer)
return 0;
buffer->context()->translate(-paintingRect.x(), -paintingRect.y());
buffer->context()->clip(FloatRect(0, 0, paintingRect.maxX(), paintingRect.maxY()));
m_view->paintContents(buffer->context(), paintingRect);
RefPtr<Image> image = buffer->copyImage();
return createDragImageFromImage(image.get(), renderer->shouldRespectImageOrientation());
}
DragImageRef Frame::dragImageForSelection()
{
if (!selection()->isRange())
return 0;
const ScopedFramePaintingState state(this, 0);
m_view->setPaintBehavior(PaintBehaviorSelectionOnly);
m_doc->updateLayout();
IntRect paintingRect = enclosingIntRect(selection()->bounds());
float deviceScaleFactor = 1;
if (m_page)
deviceScaleFactor = m_page->deviceScaleFactor();
paintingRect.setWidth(paintingRect.width() * deviceScaleFactor);
paintingRect.setHeight(paintingRect.height() * deviceScaleFactor);
OwnPtr<ImageBuffer> buffer(ImageBuffer::create(paintingRect.size(), deviceScaleFactor, ColorSpaceDeviceRGB));
if (!buffer)
return 0;
buffer->context()->translate(-paintingRect.x(), -paintingRect.y());
buffer->context()->clip(FloatRect(0, 0, paintingRect.maxX(), paintingRect.maxY()));
m_view->paintContents(buffer->context(), paintingRect);
RefPtr<Image> image = buffer->copyImage();
return createDragImageFromImage(image.get());
}
#endif
} // namespace WebCore