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phantomjs/src/qt/src/3rdparty/webkit/Source/WebCore/page/Frame.cpp

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/*
* 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>
*
* 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 "ApplyStyleCommand.h"
#include "CSSComputedStyleDeclaration.h"
#include "CSSMutableStyleDeclaration.h"
#include "CSSProperty.h"
#include "CSSPropertyNames.h"
#include "CachedCSSStyleSheet.h"
#include "Chrome.h"
#include "ChromeClient.h"
#include "DOMWindow.h"
#include "CachedResourceLoader.h"
#include "DocumentType.h"
#include "EditingText.h"
#include "EditorClient.h"
#include "EventNames.h"
#include "FloatQuad.h"
#include "FocusController.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.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 "Logging.h"
#include "MediaFeatureNames.h"
#include "MediaStreamFrameController.h"
#include "Navigator.h"
#include "NodeList.h"
#include "Page.h"
#include "PageGroup.h"
#include "RegularExpression.h"
#include "RenderLayer.h"
#include "RenderPart.h"
#include "RenderTableCell.h"
#include "RenderTextControl.h"
#include "RenderTheme.h"
#include "RenderView.h"
#include "RuntimeEnabledFeatures.h"
#include "ScriptController.h"
#include "ScriptSourceCode.h"
#include "ScriptValue.h"
#include "Settings.h"
#include "TextIterator.h"
#include "TextResourceDecoder.h"
#include "UserContentURLPattern.h"
#include "UserTypingGestureIndicator.h"
#include "XMLNSNames.h"
#include "XMLNames.h"
#include "htmlediting.h"
#include "markup.h"
#include "npruntime_impl.h"
#include "visible_units.h"
#include <wtf/RefCountedLeakCounter.h>
#include <wtf/StdLibExtras.h>
#if USE(ACCELERATED_COMPOSITING)
#include "RenderLayerCompositor.h"
#endif
#if USE(JSC)
#include "JSDOMWindowShell.h"
#include "runtime_root.h"
#endif
#include "MathMLNames.h"
#include "SVGNames.h"
#include "XLinkNames.h"
#if ENABLE(SVG)
#include "SVGDocument.h"
#include "SVGDocumentExtensions.h"
#endif
#if ENABLE(TILED_BACKING_STORE)
#include "TiledBackingStore.h"
#endif
using namespace std;
namespace WebCore {
using namespace HTMLNames;
#ifndef NDEBUG
static WTF::RefCountedLeakCounter frameCounter("Frame");
#endif
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(this)
, m_editor(this)
, m_selectionController(this)
, m_eventHandler(this)
, m_animationController(this)
, m_lifeSupportTimer(this, &Frame::lifeSupportTimerFired)
, m_pageZoomFactor(parentPageZoomFactor(this))
, m_textZoomFactor(parentTextZoomFactor(this))
, m_pageScaleFactor(1)
#if ENABLE(ORIENTATION_EVENTS)
, m_orientation(0)
#endif
, m_inViewSourceMode(false)
, m_isDisconnected(false)
, m_excludeFromTextSearch(false)
#if ENABLE(MEDIA_STREAM)
, m_mediaStreamFrameController(RuntimeEnabledFeatures::mediaStreamEnabled() ? adoptPtr(new MediaStreamFrameController(this)) : PassOwnPtr<MediaStreamFrameController>())
#endif
{
ASSERT(page);
AtomicString::init();
HTMLNames::init();
QualifiedName::init();
MediaFeatureNames::init();
SVGNames::init();
XLinkNames::init();
MathMLNames::init();
XMLNSNames::init();
XMLNames::init();
if (!ownerElement) {
#if ENABLE(TILED_BACKING_STORE)
// Top level frame only for now.
setTiledBackingStoreEnabled(page->settings()->tiledBackingStoreEnabled());
#endif
} else {
page->incrementFrameCount();
// Make sure we will not end up with two frames referencing the same owner element.
Frame*& contentFrameSlot = ownerElement->m_contentFrame;
ASSERT(!contentFrameSlot || contentFrameSlot->ownerElement() != ownerElement);
contentFrameSlot = this;
}
#ifndef NDEBUG
frameCounter.increment();
#endif
}
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
ASSERT(!m_lifeSupportTimer.isActive());
#ifndef NDEBUG
frameCounter.decrement();
#endif
disconnectOwnerElement();
if (m_domWindow)
m_domWindow->disconnectFrame();
#if ENABLE(MEDIA_STREAM)
if (m_mediaStreamFrameController)
m_mediaStreamFrameController->disconnectFrame();
#endif
HashSet<DOMWindow*>::iterator end = m_liveFormerWindows.end();
for (HashSet<DOMWindow*>::iterator it = m_liveFormerWindows.begin(); it != end; ++it)
(*it)->disconnectFrame();
HashSet<FrameDestructionObserver*>::iterator stop = m_destructionObservers.end();
for (HashSet<FrameDestructionObserver*>::iterator it = m_destructionObservers.begin(); it != stop; ++it)
(*it)->frameDestroyed();
if (m_view) {
m_view->hide();
m_view->clearFrame();
}
ASSERT(!m_lifeSupportTimer.isActive());
}
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->detachCustomScrollbars();
// Detach the document now, so any onUnload handlers get run - if
// we wait until the view is destroyed, then things won't be
// hooked up enough for some JavaScript 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->detach();
}
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 ENABLE(TILED_BACKING_STORE)
if (m_view && tiledBackingStore())
m_view->setPaintsEntireContents(true);
#endif
}
void Frame::setDocument(PassRefPtr<Document> newDoc)
{
ASSERT(!newDoc || newDoc->frame());
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;
selection()->updateSecureKeyboardEntryIfActive();
if (m_doc && !m_doc->attached())
m_doc->attach();
// Update the cached 'document' property, which is now stale.
m_script.updateDocument();
if (m_page)
m_page->updateViewportArguments();
}
#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 = n->traverseNextNode(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 = element->traversePreviousNode();
n && lengthSearched < charsSearchedThreshold;
n = n->traversePreviousNode())
{
if (n->hasTagName(formTag)
|| (n->isHTMLElement() && static_cast<Element*>(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->getAttribute(nameAttr));
if (!resultFromNameAttribute.isEmpty())
return resultFromNameAttribute;
return matchLabelsAgainstString(labels, element->getAttribute(idAttr));
}
Color Frame::getDocumentBackgroundColor() const
{
// <https://bugs.webkit.org/show_bug.cgi?id=59540> We blend the background color of
// the document and the body against the base background color of the frame view.
// Background images are unfortunately impractical to include.
// Return invalid Color objects whenever there is insufficient information.
if (!m_doc)
return Color();
Element* htmlElement = m_doc->documentElement();
Element* bodyElement = m_doc->body();
// start as invalid colors
Color htmlBackgroundColor;
Color bodyBackgroundColor;
if (htmlElement && htmlElement->renderer())
htmlBackgroundColor = htmlElement->renderer()->style()->visitedDependentColor(CSSPropertyBackgroundColor);
if (bodyElement && bodyElement->renderer())
bodyBackgroundColor = bodyElement->renderer()->style()->visitedDependentColor(CSSPropertyBackgroundColor);
if (!bodyBackgroundColor.isValid()) {
if (!htmlBackgroundColor.isValid())
return Color();
return view()->baseBackgroundColor().blend(htmlBackgroundColor);
}
if (!htmlBackgroundColor.isValid())
return view()->baseBackgroundColor().blend(bodyBackgroundColor);
// We take the aggregate of the base background color
// the <html> background color, and the <body>
// background color to find the document color. The
// addition of the base background color is not
// technically part of the document background, but it
// otherwise poses problems when the aggregate is not
// fully opaque.
return view()->baseBackgroundColor().blend(htmlBackgroundColor).blend(bodyBackgroundColor);
}
void Frame::setPrinting(bool printing, const FloatSize& pageSize, float maximumShrinkRatio, AdjustViewSizeOrNot shouldAdjustViewSize)
{
m_pageResets.clear();
m_doc->setPrinting(printing);
view()->adjustMediaTypeForPrinting(printing);
m_doc->styleSelectorChanged(RecalcStyleImmediately);
if (printing)
view()->forceLayoutForPagination(pageSize, 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 (Frame* child = tree()->firstChild(); child; child = child->tree()->nextSibling())
child->setPrinting(printing, IntSize(), 0, shouldAdjustViewSize);
}
void Frame::addResetPage(int page)
{
m_pageResets.append(page);
}
void Frame::getPagination(int page, int pages, int& logicalPage, int& logicalPages) const
{
logicalPage = page;
logicalPages = pages;
int last_j = 0;
int j = 0;
for(size_t i = 0; i < m_pageResets.size(); ++i) {
j = m_pageResets.at(i);
if (j >= page) {
break;
}
last_j = j;
}
if (page > last_j) {
logicalPage = page - last_j;
}
if (last_j) {
if (j > last_j) {
logicalPages = j - last_j;
} else {
logicalPages = pages - last_j;
}
} else if (j >= page && j < pages) {
logicalPages = j;
}
}
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->first.get(), *it->second, 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);
}
}
#ifndef NDEBUG
static HashSet<Frame*>& keepAliveSet()
{
DEFINE_STATIC_LOCAL(HashSet<Frame*>, staticKeepAliveSet, ());
return staticKeepAliveSet;
}
#endif
void Frame::keepAlive()
{
if (m_lifeSupportTimer.isActive())
return;
#ifndef NDEBUG
keepAliveSet().add(this);
#endif
ref();
m_lifeSupportTimer.startOneShot(0);
}
#ifndef NDEBUG
void Frame::cancelAllKeepAlive()
{
HashSet<Frame*>::iterator end = keepAliveSet().end();
for (HashSet<Frame*>::iterator it = keepAliveSet().begin(); it != end; ++it) {
Frame* frame = *it;
frame->m_lifeSupportTimer.stop();
frame->deref();
}
keepAliveSet().clear();
}
#endif
void Frame::lifeSupportTimerFired(Timer<Frame>*)
{
#ifndef NDEBUG
keepAliveSet().remove(this);
#endif
deref();
}
void Frame::clearDOMWindow()
{
if (m_domWindow) {
m_liveFormerWindows.add(m_domWindow.get());
m_domWindow->clear();
}
m_domWindow = 0;
}
RenderView* Frame::contentRenderer() const
{
Document* doc = document();
if (!doc)
return 0;
RenderObject* object = doc->renderer();
if (!object)
return 0;
ASSERT(object->isRenderView());
return toRenderView(object);
}
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(widget->isFrameView());
return static_cast<const FrameView*>(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());
}
void Frame::setDOMWindow(DOMWindow* domWindow)
{
if (m_domWindow) {
m_liveFormerWindows.add(m_domWindow.get());
m_domWindow->clear();
}
m_domWindow = domWindow;
}
DOMWindow* Frame::domWindow() const
{
if (!m_domWindow)
m_domWindow = DOMWindow::create(const_cast<Frame*>(this));
return m_domWindow.get();
}
void Frame::clearFormerDOMWindow(DOMWindow* window)
{
m_liveFormerWindows.remove(window);
}
void Frame::pageDestroyed()
{
if (Frame* parent = tree()->parent())
parent->loader()->checkLoadComplete();
if (m_domWindow) {
m_domWindow->resetGeolocation();
m_domWindow->pageDestroyed();
}
#if ENABLE(MEDIA_STREAM)
if (m_mediaStreamFrameController)
m_mediaStreamFrameController->disconnectPage();
#endif
// 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);
script()->clearWindowShell();
script()->clearScriptObjects();
script()->updatePlatformScriptObjects();
detachFromPage();
}
void Frame::disconnectOwnerElement()
{
if (m_ownerElement) {
if (Document* doc = document())
doc->clearAXObjectCache();
m_ownerElement->m_contentFrame = 0;
if (m_page)
m_page->decrementFrameCount();
}
m_ownerElement = 0;
}
// The frame is moved in DOM, potentially to another page.
void Frame::transferChildFrameToNewDocument()
{
ASSERT(m_ownerElement);
Frame* newParent = m_ownerElement->document()->frame();
ASSERT(newParent);
bool didTransfer = false;
// Switch page.
Page* newPage = newParent->page();
Page* oldPage = m_page;
if (m_page != newPage) {
if (m_page) {
if (m_page->focusController()->focusedFrame() == this)
m_page->focusController()->setFocusedFrame(0);
m_page->decrementFrameCount();
}
// FIXME: We should ideally allow existing Geolocation activities to continue
// when the Geolocation's iframe is reparented.
// See https://bugs.webkit.org/show_bug.cgi?id=55577
// and https://bugs.webkit.org/show_bug.cgi?id=52877
if (m_domWindow)
m_domWindow->resetGeolocation();
#if ENABLE(MEDIA_STREAM)
if (m_mediaStreamFrameController)
m_mediaStreamFrameController->transferToNewPage(newPage);
#endif
m_page = newPage;
if (newPage)
newPage->incrementFrameCount();
didTransfer = true;
}
// Update the frame tree.
didTransfer = newParent->tree()->transferChild(this) || didTransfer;
// Avoid unnecessary calls to client and frame subtree if the frame ended
// up on the same page and under the same parent frame.
if (didTransfer) {
// Let external clients update themselves.
loader()->client()->didTransferChildFrameToNewDocument(oldPage);
// Update resource tracking now that frame could be in a different page.
if (oldPage != newPage)
loader()->transferLoadingResourcesFromPage(oldPage);
// Do the same for all the children.
for (Frame* child = tree()->firstChild(); child; child = child->tree()->nextSibling())
child->transferChildFrameToNewDocument();
}
}
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, true);
Node* node = result.innerNode();
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, false);
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);
IntRect rect = editor()->firstRectForRange(previousCharacterRange.get());
if (rect.contains(framePoint))
return previousCharacterRange.release();
}
VisiblePosition next = position.next();
if (RefPtr<Range> nextCharacterRange = makeRange(position, next)) {
IntRect 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, 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->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 ENABLE(TILED_BACKING_STORE)
void Frame::setTiledBackingStoreEnabled(bool enabled)
{
if (!enabled) {
m_tiledBackingStore.clear();
return;
}
if (m_tiledBackingStore)
return;
m_tiledBackingStore = adoptPtr(new TiledBackingStore(this));
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 (int n = 0; n < size; ++n)
m_page->chrome()->invalidateContentsAndWindow(m_view->contentsToWindow(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(bool showDebugInfo) const
{
#if USE(ACCELERATED_COMPOSITING)
document()->updateLayout();
if (!contentRenderer())
return String();
return contentRenderer()->compositor()->layerTreeAsText(showDebugInfo);
#else
return String();
#endif
}
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 (!static_cast<SVGDocument*>(document)->zoomAndPanEnabled())
return;
if (document->renderer())
document->renderer()->setNeedsLayout(true);
}
#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.
IntPoint 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 (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 USE(ACCELERATED_COMPOSITING)
void Frame::updateContentsScale(float scale)
{
for (Frame* child = tree()->firstChild(); child; child = child->tree()->nextSibling())
child->updateContentsScale(scale);
RenderView* root = contentRenderer();
if (root && root->compositor())
root->compositor()->updateContentsScale(scale);
}
#endif
void Frame::scalePage(float scale, const IntPoint& origin)
{
Document* document = this->document();
if (!document)
return;
if (scale != m_pageScaleFactor) {
m_pageScaleFactor = scale;
if (document->renderer())
document->renderer()->setNeedsLayout(true);
document->recalcStyle(Node::Force);
#if USE(ACCELERATED_COMPOSITING)
updateContentsScale(scale);
#endif
}
if (FrameView* view = this->view()) {
if (document->renderer() && document->renderer()->needsLayout() && view->didFirstLayout())
view->layout();
view->setScrollPosition(origin);
}
}
} // namespace WebCore
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