PassOwnPtr<Keyframe::PropertySpecificKeyframe> AnimatableValueKeyframe::createPropertySpecificKeyframe(CSSPropertyID property) const
{
    return adoptPtr(new PropertySpecificKeyframe(offset(), &easing(), propertyValue(property), composite()));
}
void ScopedEventQueue::initialize()
{
    ASSERT(!s_instance);
    OwnPtr<ScopedEventQueue> instance = adoptPtr(new ScopedEventQueue);
    s_instance = instance.leakPtr();
}
PassOwnPtr<DeferredImageDecoder> DeferredImageDecoder::create(const SharedBuffer& data, ImageSource::AlphaOption alphaOption, ImageSource::GammaAndColorProfileOption gammaAndColorOption)
{
    OwnPtr<ImageDecoder> actualDecoder = ImageDecoder::create(data, alphaOption, gammaAndColorOption);
    return actualDecoder ? adoptPtr(new DeferredImageDecoder(actualDecoder.release())) : nullptr;
}
PassOwnPtr<WorkerObjectProxy> WorkerObjectProxy::create(WorkerMessagingProxy* messagingProxy)
{
    ASSERT(messagingProxy);
    return adoptPtr(new WorkerObjectProxy(messagingProxy));
}
示例#5
0
PassOwnPtr<InjectedScriptManager> InjectedScriptManager::createForPage()
{
    return adoptPtr(new InjectedScriptManager(&InjectedScriptManager::canAccessInspectedWindow));
}
示例#6
0
JSGlobalData::JSGlobalData(GlobalDataType globalDataType, HeapType heapType)
    :
#if ENABLE(ASSEMBLER)
      executableAllocator(*this),
#endif
      heap(this, heapType)
    , globalDataType(globalDataType)
    , clientData(0)
    , topCallFrame(CallFrame::noCaller())
    , arrayConstructorTable(fastNew<HashTable>(JSC::arrayConstructorTable))
    , arrayPrototypeTable(fastNew<HashTable>(JSC::arrayPrototypeTable))
    , booleanPrototypeTable(fastNew<HashTable>(JSC::booleanPrototypeTable))
    , dateTable(fastNew<HashTable>(JSC::dateTable))
    , dateConstructorTable(fastNew<HashTable>(JSC::dateConstructorTable))
    , errorPrototypeTable(fastNew<HashTable>(JSC::errorPrototypeTable))
    , globalObjectTable(fastNew<HashTable>(JSC::globalObjectTable))
    , jsonTable(fastNew<HashTable>(JSC::jsonTable))
    , mathTable(fastNew<HashTable>(JSC::mathTable))
    , numberConstructorTable(fastNew<HashTable>(JSC::numberConstructorTable))
    , numberPrototypeTable(fastNew<HashTable>(JSC::numberPrototypeTable))
    , objectConstructorTable(fastNew<HashTable>(JSC::objectConstructorTable))
    , privateNamePrototypeTable(fastNew<HashTable>(JSC::privateNamePrototypeTable))
    , regExpTable(fastNew<HashTable>(JSC::regExpTable))
    , regExpConstructorTable(fastNew<HashTable>(JSC::regExpConstructorTable))
    , regExpPrototypeTable(fastNew<HashTable>(JSC::regExpPrototypeTable))
    , stringConstructorTable(fastNew<HashTable>(JSC::stringConstructorTable))
    , identifierTable(globalDataType == Default ? wtfThreadData().currentIdentifierTable() : createIdentifierTable())
    , propertyNames(new CommonIdentifiers(this))
    , emptyList(new MarkedArgumentBuffer)
    , parserArena(adoptPtr(new ParserArena))
    , keywords(adoptPtr(new Keywords(this)))
    , interpreter(0)
    , jsArrayClassInfo(&JSArray::s_info)
    , jsFinalObjectClassInfo(&JSFinalObject::s_info)
#if ENABLE(DFG_JIT)
    , sizeOfLastScratchBuffer(0)
#endif
    , dynamicGlobalObject(0)
    , cachedUTCOffset(QNaN)
    , m_enabledProfiler(0)
    , m_regExpCache(new RegExpCache(this))
#if ENABLE(REGEXP_TRACING)
    , m_rtTraceList(new RTTraceList())
#endif
#ifndef NDEBUG
    , exclusiveThread(0)
#endif
#if CPU(X86) && ENABLE(JIT)
    , m_timeoutCount(512)
#endif
    , m_newStringsSinceLastHashCons(0)
#if ENABLE(ASSEMBLER)
    , m_canUseAssembler(enableAssembler(executableAllocator))
#endif
#if ENABLE(JIT)
    , m_canUseJIT(m_canUseAssembler && Options::useJIT())
#endif
#if ENABLE(YARR_JIT)
    , m_canUseRegExpJIT(m_canUseAssembler && Options::useRegExpJIT())
#endif
#if ENABLE(GC_VALIDATION)
    , m_initializingObjectClass(0)
#endif
    , m_inDefineOwnProperty(false)
    , m_codeCache(CodeCache::create())
{
    interpreter = new Interpreter(*this);

    // Need to be careful to keep everything consistent here
    JSLockHolder lock(this);
    IdentifierTable* existingEntryIdentifierTable = wtfThreadData().setCurrentIdentifierTable(identifierTable);
    structureStructure.set(*this, Structure::createStructure(*this));
    structureRareDataStructure.set(*this, StructureRareData::createStructure(*this, 0, jsNull()));
    debuggerActivationStructure.set(*this, DebuggerActivation::createStructure(*this, 0, jsNull()));
    interruptedExecutionErrorStructure.set(*this, InterruptedExecutionError::createStructure(*this, 0, jsNull()));
    terminatedExecutionErrorStructure.set(*this, TerminatedExecutionError::createStructure(*this, 0, jsNull()));
    stringStructure.set(*this, JSString::createStructure(*this, 0, jsNull()));
    notAnObjectStructure.set(*this, JSNotAnObject::createStructure(*this, 0, jsNull()));
    propertyNameIteratorStructure.set(*this, JSPropertyNameIterator::createStructure(*this, 0, jsNull()));
    getterSetterStructure.set(*this, GetterSetter::createStructure(*this, 0, jsNull()));
    apiWrapperStructure.set(*this, JSAPIValueWrapper::createStructure(*this, 0, jsNull()));
    JSScopeStructure.set(*this, JSScope::createStructure(*this, 0, jsNull()));
    executableStructure.set(*this, ExecutableBase::createStructure(*this, 0, jsNull()));
    nativeExecutableStructure.set(*this, NativeExecutable::createStructure(*this, 0, jsNull()));
    evalExecutableStructure.set(*this, EvalExecutable::createStructure(*this, 0, jsNull()));
    programExecutableStructure.set(*this, ProgramExecutable::createStructure(*this, 0, jsNull()));
    functionExecutableStructure.set(*this, FunctionExecutable::createStructure(*this, 0, jsNull()));
    regExpStructure.set(*this, RegExp::createStructure(*this, 0, jsNull()));
    sharedSymbolTableStructure.set(*this, SharedSymbolTable::createStructure(*this, 0, jsNull()));
    structureChainStructure.set(*this, StructureChain::createStructure(*this, 0, jsNull()));
    sparseArrayValueMapStructure.set(*this, SparseArrayValueMap::createStructure(*this, 0, jsNull()));
    withScopeStructure.set(*this, JSWithScope::createStructure(*this, 0, jsNull()));
    unlinkedFunctionExecutableStructure.set(*this, UnlinkedFunctionExecutable::createStructure(*this, 0, jsNull()));
    unlinkedProgramCodeBlockStructure.set(*this, UnlinkedProgramCodeBlock::createStructure(*this, 0, jsNull()));
    unlinkedEvalCodeBlockStructure.set(*this, UnlinkedEvalCodeBlock::createStructure(*this, 0, jsNull()));
    unlinkedFunctionCodeBlockStructure.set(*this, UnlinkedFunctionCodeBlock::createStructure(*this, 0, jsNull()));
    propertyTableStructure.set(*this, PropertyTable::createStructure(*this, 0, jsNull()));
    smallStrings.initializeCommonStrings(*this);

    wtfThreadData().setCurrentIdentifierTable(existingEntryIdentifierTable);

#if ENABLE(JIT)
    jitStubs = adoptPtr(new JITThunks());
    performPlatformSpecificJITAssertions(this);
#endif
    
    interpreter->initialize(this->canUseJIT());
    
#if ENABLE(JIT)
    initializeHostCallReturnValue(); // This is needed to convince the linker not to drop host call return support.
#endif

    heap.notifyIsSafeToCollect();

    LLInt::Data::performAssertions(*this);
    
    if (Options::enableProfiler())
        m_perBytecodeProfiler = adoptPtr(new Profiler::Database(*this));

#if ENABLE(DFG_JIT)
    if (canUseJIT())
        m_dfgState = adoptPtr(new DFG::LongLivedState());
#endif
}
示例#7
0
PassOwnPtr<SpeechInput> SpeechInput::create(SpeechInputClient* client)
{
    return adoptPtr(new SpeechInput(client));
}
PassOwnPtr<MediaPlayer> WebMediaPlayerClientImpl::create(MediaPlayerClient* client)
{
    return adoptPtr(new WebMediaPlayerClientImpl(client));
}
SimpleFontData* CSSFontFaceSource::getFontData(const FontDescription& fontDescription, bool syntheticBold, bool syntheticItalic, CSSFontSelector* fontSelector, bool woffEnabled)
{
    // If the font hasn't loaded or an error occurred, then we've got nothing.
    if (!isValid())
        return 0;

#if ENABLE(SVG_FONTS)
    if (!m_font && !m_svgFontFaceElement) {
#else
    if (!m_font) {
#endif
        SimpleFontData* fontData = fontCache()->getCachedFontData(fontDescription, m_string);

        // We're local. Just return a SimpleFontData from the normal cache.
        return fontData;
    }

    // See if we have a mapping in our FontData cache.
    unsigned hashKey = (fontDescription.computedPixelSize() + 1) << 6 | fontDescription.widthVariant() << 4
                       | (fontDescription.textOrientation() == TextOrientationUpright ? 8 : 0) | (fontDescription.orientation() == Vertical ? 4 : 0) | (syntheticBold ? 2 : 0) | (syntheticItalic ? 1 : 0);
    if (SimpleFontData* cachedData = m_fontDataTable.get(hashKey))
        return cachedData;

    OwnPtr<SimpleFontData> fontData;

    // If we are still loading, then we let the system pick a font.
    if (isLoaded()) {
        if (m_font) {
#if ENABLE(SVG_FONTS)
            if (m_hasExternalSVGFont) {
                // For SVG fonts parse the external SVG document, and extract the <font> element.
                if (!m_font->ensureSVGFontData())
                    return 0;

                if (!m_externalSVGFontElement)
                    m_externalSVGFontElement = m_font->getSVGFontById(SVGURIReference::getTarget(m_string));

                if (!m_externalSVGFontElement)
                    return 0;

                SVGFontFaceElement* fontFaceElement = 0;

                // Select first <font-face> child
                for (Node* fontChild = m_externalSVGFontElement->firstChild(); fontChild; fontChild = fontChild->nextSibling()) {
                    if (fontChild->hasTagName(SVGNames::font_faceTag)) {
                        fontFaceElement = static_cast<SVGFontFaceElement*>(fontChild);
                        break;
                    }
                }

                if (fontFaceElement) {
                    if (!m_svgFontFaceElement) {
                        // We're created using a CSS @font-face rule, that means we're not associated with a SVGFontFaceElement.
                        // Use the imported <font-face> tag as referencing font-face element for these cases.
                        m_svgFontFaceElement = fontFaceElement;
                    }

                    fontData.set(new SimpleFontData(adoptPtr(new SVGFontData(fontFaceElement)), fontDescription.computedPixelSize(), syntheticBold, syntheticItalic));
                }
            } else
#endif
            {
                // Create new FontPlatformData from our CGFontRef, point size and ATSFontRef.
                if (!m_font->ensureCustomFontData(woffEnabled))
                    return 0;

                fontData.set(new SimpleFontData(m_font->platformDataFromCustomData(fontDescription.computedPixelSize(), syntheticBold, syntheticItalic, fontDescription.orientation(),
                                                                                   fontDescription.textOrientation(), fontDescription.widthVariant(), fontDescription.renderingMode()), true, false));
            }
        } else {
#if ENABLE(SVG_FONTS)
            // In-Document SVG Fonts
            if (m_svgFontFaceElement)
                fontData.set(new SimpleFontData(adoptPtr(new SVGFontData(m_svgFontFaceElement.get())), fontDescription.computedPixelSize(), syntheticBold, syntheticItalic));
#endif
        }
    } else {
        // Kick off the load now.
        if (CachedResourceLoader* cachedResourceLoader = fontSelector->cachedResourceLoader())
            m_font->beginLoadIfNeeded(cachedResourceLoader);
        // FIXME: m_string is a URL so it makes no sense to pass it as a family name.
        SimpleFontData* tempData = fontCache()->getCachedFontData(fontDescription, m_string);
        if (!tempData)
            tempData = fontCache()->getLastResortFallbackFont(fontDescription);

        fontData.set(new SimpleFontData(tempData->platformData(), true, true));
    }

    SimpleFontData* fontDataRawPtr = fontData.leakPtr();
    m_fontDataTable.set(hashKey, fontDataRawPtr);

    return fontDataRawPtr;
}

#if ENABLE(SVG_FONTS)
SVGFontFaceElement* CSSFontFaceSource::svgFontFaceElement() const
{
    return m_svgFontFaceElement.get();
}

void CSSFontFaceSource::setSVGFontFaceElement(PassRefPtr<SVGFontFaceElement> element) 
{ 
    m_svgFontFaceElement = element;
}

bool CSSFontFaceSource::isSVGFontFaceSource() const
{
    return m_svgFontFaceElement || m_hasExternalSVGFont;
}
#endif

}
示例#10
0
PassOwnPtr<InputMethodContext> InputMethodContext::create(HTMLElement* element)
{
    return adoptPtr(new InputMethodContext(element));
}
示例#11
0
void DatabaseThread::start()
{
    if (m_thread)
        return;
    m_thread = adoptPtr(blink::Platform::current()->createThread("WebCore: Database"));
}
示例#12
0
PassOwnPtr<MediaQueryExp> MediaQueryExp::create(const AtomicString& mediaFeature, CSSParserValueList* values)
{
    return adoptPtr(new MediaQueryExp(mediaFeature, values));
}
PassOwnPtr<Keyframe::PropertySpecificKeyframe> AnimatableValueKeyframe::PropertySpecificKeyframe::neutralKeyframe(double offset, PassRefPtr<TimingFunction> easing) const
{
    return adoptPtr(new AnimatableValueKeyframe::PropertySpecificKeyframe(offset, easing, AnimatableValue::neutralValue(), AnimationEffect::CompositeAdd));
}
PassOwnPtr<Keyframe::PropertySpecificKeyframe> AnimatableValueKeyframe::PropertySpecificKeyframe::cloneWithOffset(double offset) const
{
    Keyframe::PropertySpecificKeyframe* theClone = new PropertySpecificKeyframe(offset, m_easing, m_value);
    return adoptPtr(theClone);
}
示例#15
0
PassOwnPtr<PinchViewports> PinchViewports::create(WebViewImpl* owner)
{
    return adoptPtr(new PinchViewports(owner));
}
示例#16
0
PassOwnPtr<LocaleWin> LocaleWin::create(LCID lcid)
{
    return adoptPtr(new LocaleWin(lcid));
}
示例#17
0
void InspectorConsoleAgent::addInspectedHeapObject(ErrorString*, int inspectedHeapObjectId)
{
    m_injectedScriptManager->injectedScriptHost()->addInspectedObject(adoptPtr(new InspectableHeapObject(inspectedHeapObjectId)));
}
示例#18
0
void TestController::initialize(int argc, const char* argv[])
{
    platformInitialize();

    bool printSupportedFeatures = false;

    for (int i = 1; i < argc; ++i) {
        std::string argument(argv[i]);

        if (argument == "--timeout" && i + 1 < argc) {
            m_longTimeout = atoi(argv[++i]);
            // Scale up the short timeout to match.
            m_shortTimeout = defaultShortTimeout * m_longTimeout / defaultLongTimeout;
            continue;
        }
        if (argument == "--pixel-tests") {
            m_dumpPixels = true;
            continue;
        }
        if (argument == "--verbose") {
            m_verbose = true;
            continue;
        }
        if (argument == "--gc-between-tests") {
            m_gcBetweenTests = true;
            continue;
        }
        if (argument == "--print-supported-features") {
            printSupportedFeatures = true;
            break;
        }

        // Skip any other arguments that begin with '--'.
        if (argument.length() >= 2 && argument[0] == '-' && argument[1] == '-')
            continue;

        m_paths.push_back(argument);
    }

    if (printSupportedFeatures) {
        // FIXME: On Windows, DumpRenderTree uses this to expose whether it supports 3d
        // transforms and accelerated compositing. When we support those features, we
        // should match DRT's behavior.
        exit(0);
    }

    m_usingServerMode = (m_paths.size() == 1 && m_paths[0] == "-");
    if (m_usingServerMode)
        m_printSeparators = true;
    else
        m_printSeparators = m_paths.size() > 1;

    initializeInjectedBundlePath();
    initializeTestPluginDirectory();

    WKRetainPtr<WKStringRef> pageGroupIdentifier(AdoptWK, WKStringCreateWithUTF8CString("WebKitTestRunnerPageGroup"));
    m_pageGroup.adopt(WKPageGroupCreateWithIdentifier(pageGroupIdentifier.get()));

    m_context.adopt(WKContextCreateWithInjectedBundlePath(injectedBundlePath()));

    const char* path = libraryPathForTesting();
    if (path) {
        Vector<char> databaseDirectory(strlen(path) + strlen("/Databases") + 1);
        sprintf(databaseDirectory.data(), "%s%s", path, "/Databases");
        WKRetainPtr<WKStringRef> databaseDirectoryWK(AdoptWK, WKStringCreateWithUTF8CString(databaseDirectory.data()));
        WKContextSetDatabaseDirectory(m_context.get(), databaseDirectoryWK.get());
    }

    platformInitializeContext();

    WKContextInjectedBundleClient injectedBundleClient = {
        0,
        this,
        didReceiveMessageFromInjectedBundle,
        didReceiveSynchronousMessageFromInjectedBundle
    };
    WKContextSetInjectedBundleClient(m_context.get(), &injectedBundleClient);

    _WKContextSetAdditionalPluginsDirectory(m_context.get(), testPluginDirectory());

    m_mainWebView = adoptPtr(new PlatformWebView(m_context.get(), m_pageGroup.get()));

    WKPageUIClient pageUIClient = {
        0,
        this,
        createOtherPage,
        0, // showPage
        0, // close
        0, // takeFocus
        0, // focus
        0, // unfocus
        0, // runJavaScriptAlert        
        0, // runJavaScriptConfirm
        0, // runJavaScriptPrompt
        0, // setStatusText
        0, // mouseDidMoveOverElement
        0, // missingPluginButtonClicked
        0, // didNotHandleKeyEvent
        0, // toolbarsAreVisible
        0, // setToolbarsAreVisible
        0, // menuBarIsVisible
        0, // setMenuBarIsVisible
        0, // statusBarIsVisible
        0, // setStatusBarIsVisible
        0, // isResizable
        0, // setIsResizable
        getWindowFrameMainPage,
        setWindowFrameMainPage,
        runBeforeUnloadConfirmPanel,
        0, // didDraw
        0, // pageDidScroll
        exceededDatabaseQuota,
        0, // runOpenPanel
        0, // decidePolicyForGeolocationPermissionRequest
        0, // headerHeight
        0, // footerHeight
        0, // drawHeader
        0, // drawFooter
        0, // printFrame
        0, // runModal
        0, // didCompleteRubberBandForMainFrame
        0, // saveDataToFileInDownloadsFolder
        0, // shouldInterruptJavaScript
    };
    WKPageSetPageUIClient(m_mainWebView->page(), &pageUIClient);

    WKPageLoaderClient pageLoaderClient = {
        0,
        this,
        0, // didStartProvisionalLoadForFrame
        0, // didReceiveServerRedirectForProvisionalLoadForFrame
        0, // didFailProvisionalLoadWithErrorForFrame
        0, // didCommitLoadForFrame
        0, // didFinishDocumentLoadForFrame
        didFinishLoadForFrame,
        0, // didFailLoadWithErrorForFrame
        0, // didSameDocumentNavigationForFrame
        0, // didReceiveTitleForFrame
        0, // didFirstLayoutForFrame
        0, // didFirstVisuallyNonEmptyLayoutForFrame
        0, // didRemoveFrameFromHierarchy
        0, // didDisplayInsecureContentForFrame
        0, // didRunInsecureContentForFrame
        0, // canAuthenticateAgainstProtectionSpaceInFrame
        0, // didReceiveAuthenticationChallengeInFrame
        0, // didStartProgress
        0, // didChangeProgress
        0, // didFinishProgress
        0, // didBecomeUnresponsive
        0, // didBecomeResponsive
        processDidCrash,
        0, // didChangeBackForwardList
        0, // shouldGoToBackForwardListItem
        0  // didFailToInitializePlugin
    };
    WKPageSetPageLoaderClient(m_mainWebView->page(), &pageLoaderClient);
}
示例#19
0
PassOwnPtr<SimpleFontData::DerivedFontData> SimpleFontData::DerivedFontData::create(bool forCustomFont)
{
    return adoptPtr(new DerivedFontData(forCustomFont));
}
示例#20
0
PassOwnPtr<InspectorProfilerAgent> InspectorProfilerAgent::create(InstrumentingAgents* instrumentingAgents, InspectorConsoleAgent* consoleAgent, InspectorCompositeState* inspectorState, InjectedScriptManager* injectedScriptManager, InspectorOverlay* overlay)
{
    return adoptPtr(new InspectorProfilerAgent(instrumentingAgents, consoleAgent, inspectorState, injectedScriptManager, overlay));
}
示例#21
0
 static PassOwnPtr<Task> create(ImageLoader* loader, UpdateFromElementBehavior updateBehavior)
 {
     return adoptPtr(new Task(loader, updateBehavior));
 }
示例#22
0
PassOwnPtr<NetscapePlugin::Timer> NetscapePlugin::Timer::create(NetscapePlugin* netscapePlugin, unsigned timerID, unsigned interval, bool repeat, TimerFunc timerFunc)
{
    return adoptPtr(new Timer(netscapePlugin, timerID, interval, repeat, timerFunc));
}
示例#23
0
PassOwnPtr<LocaleICU> LocaleICU::create(const char* localeString)
{
    return adoptPtr(new LocaleICU(localeString));
}
示例#24
0
OwnPtr<WebGLLoseContext> WebGLLoseContext::create(WebGLRenderingContext* context)
{
    return adoptPtr(new WebGLLoseContext(context));
}
示例#25
0
PassOwnPtr<InjectedScriptManager> InjectedScriptManager::createForWorker()
{
    return adoptPtr(new InjectedScriptManager(&InjectedScriptManager::canAccessInspectedWorkerContext));
}
示例#26
0
Extensions3D* GraphicsContext3DInternal::getExtensions()
{
    if (!m_extensions)
        m_extensions = adoptPtr(new Extensions3DChromium(this));
    return m_extensions.get();
}
示例#27
0
 AnimationPlayerForTesting()
 {
     m_compositorPlayer = adoptPtr(CompositorFactory::current().createAnimationPlayer());
 }
示例#28
0
static PassOwnPtr<MainThreadSharedTimer> mainThreadSharedTimer()
{
    return adoptPtr(new MainThreadSharedTimer);
}
PassOwnPtr<DeferredImageDecoder> DeferredImageDecoder::createForTesting(PassOwnPtr<ImageDecoder> decoder)
{
    return adoptPtr(new DeferredImageDecoder(decoder));
}
示例#30
0
void RenderView::setSelection(RenderObject* start, int startPos, RenderObject* end, int endPos, SelectionRepaintMode blockRepaintMode)
{
    // This code makes no assumptions as to if the rendering tree is up to date or not
    // and will not try to update it. Currently clearSelection calls this
    // (intentionally) without updating the rendering tree as it doesn't care.
    // Other callers may want to force recalc style before calling this.

    // Make sure both our start and end objects are defined.
    // Check www.msnbc.com and try clicking around to find the case where this happened.
    if ((start && !end) || (end && !start))
        return;

    // Just return if the selection hasn't changed.
    if (m_selectionStart == start && m_selectionStartPos == startPos &&
        m_selectionEnd == end && m_selectionEndPos == endPos)
        return;

    // Record the old selected objects.  These will be used later
    // when we compare against the new selected objects.
    int oldStartPos = m_selectionStartPos;
    int oldEndPos = m_selectionEndPos;

    // Objects each have a single selection rect to examine.
    typedef HashMap<RenderObject*, OwnPtr<RenderSelectionInfo> > SelectedObjectMap;
    SelectedObjectMap oldSelectedObjects;
    SelectedObjectMap newSelectedObjects;

    // Blocks contain selected objects and fill gaps between them, either on the left, right, or in between lines and blocks.
    // In order to get the repaint rect right, we have to examine left, middle, and right rects individually, since otherwise
    // the union of those rects might remain the same even when changes have occurred.
    typedef HashMap<RenderBlock*, OwnPtr<RenderBlockSelectionInfo> > SelectedBlockMap;
    SelectedBlockMap oldSelectedBlocks;
    SelectedBlockMap newSelectedBlocks;

    RenderObject* os = m_selectionStart;
    RenderObject* stop = rendererAfterPosition(m_selectionEnd, m_selectionEndPos);
    bool exploringBackwards = false;
    bool continueExploring = os && (os != stop);
    while (continueExploring) {
        if ((os->canBeSelectionLeaf() || os == m_selectionStart || os == m_selectionEnd) && os->selectionState() != SelectionNone) {
            // Blocks are responsible for painting line gaps and margin gaps.  They must be examined as well.
            oldSelectedObjects.set(os, adoptPtr(new RenderSelectionInfo(os, true)));
            if (blockRepaintMode == RepaintNewXOROld) {
                RenderBlock* cb = os->containingBlock();
                while (cb && !cb->isRenderView()) {
                    OwnPtr<RenderBlockSelectionInfo>& blockInfo = oldSelectedBlocks.add(cb, nullptr).storedValue->value;
                    if (blockInfo)
                        break;
                    blockInfo = adoptPtr(new RenderBlockSelectionInfo(cb));
                    cb = cb->containingBlock();
                }
            }
        }

        os = getNextOrPrevRenderObjectBasedOnDirection(os, stop, continueExploring, exploringBackwards);
    }

    // Now clear the selection.
    SelectedObjectMap::iterator oldObjectsEnd = oldSelectedObjects.end();
    for (SelectedObjectMap::iterator i = oldSelectedObjects.begin(); i != oldObjectsEnd; ++i)
        i->key->setSelectionStateIfNeeded(SelectionNone);

    // set selection start and end
    m_selectionStart = start;
    m_selectionStartPos = startPos;
    m_selectionEnd = end;
    m_selectionEndPos = endPos;

    // Update the selection status of all objects between m_selectionStart and m_selectionEnd
    if (start && start == end)
        start->setSelectionStateIfNeeded(SelectionBoth);
    else {
        if (start)
            start->setSelectionStateIfNeeded(SelectionStart);
        if (end)
            end->setSelectionStateIfNeeded(SelectionEnd);
    }

    RenderObject* o = start;
    stop = rendererAfterPosition(end, endPos);

    while (o && o != stop) {
        if (o != start && o != end && o->canBeSelectionLeaf())
            o->setSelectionStateIfNeeded(SelectionInside);
        o = o->nextInPreOrder();
    }

    if (blockRepaintMode != RepaintNothing)
        layer()->clearBlockSelectionGapsBounds();

    // Now that the selection state has been updated for the new objects, walk them again and
    // put them in the new objects list.
    o = start;
    exploringBackwards = false;
    continueExploring = o && (o != stop);
    while (continueExploring) {
        if ((o->canBeSelectionLeaf() || o == start || o == end) && o->selectionState() != SelectionNone) {
            newSelectedObjects.set(o, adoptPtr(new RenderSelectionInfo(o, true)));
            RenderBlock* cb = o->containingBlock();
            while (cb && !cb->isRenderView()) {
                OwnPtr<RenderBlockSelectionInfo>& blockInfo = newSelectedBlocks.add(cb, nullptr).storedValue->value;
                if (blockInfo)
                    break;
                blockInfo = adoptPtr(new RenderBlockSelectionInfo(cb));
                cb = cb->containingBlock();
            }
        }

        o = getNextOrPrevRenderObjectBasedOnDirection(o, stop, continueExploring, exploringBackwards);
    }

    if (!m_frameView || blockRepaintMode == RepaintNothing)
        return;

    // Have any of the old selected objects changed compared to the new selection?
    for (SelectedObjectMap::iterator i = oldSelectedObjects.begin(); i != oldObjectsEnd; ++i) {
        RenderObject* obj = i->key;
        RenderSelectionInfo* newInfo = newSelectedObjects.get(obj);
        RenderSelectionInfo* oldInfo = i->value.get();
        if (!newInfo || oldInfo->rect() != newInfo->rect() || oldInfo->state() != newInfo->state() ||
            (m_selectionStart == obj && oldStartPos != m_selectionStartPos) ||
            (m_selectionEnd == obj && oldEndPos != m_selectionEndPos)) {
            oldInfo->repaint();
            if (newInfo) {
                newInfo->repaint();
                newSelectedObjects.remove(obj);
            }
        }
    }

    // Any new objects that remain were not found in the old objects dict, and so they need to be updated.
    SelectedObjectMap::iterator newObjectsEnd = newSelectedObjects.end();
    for (SelectedObjectMap::iterator i = newSelectedObjects.begin(); i != newObjectsEnd; ++i)
        i->value->repaint();

    // Have any of the old blocks changed?
    SelectedBlockMap::iterator oldBlocksEnd = oldSelectedBlocks.end();
    for (SelectedBlockMap::iterator i = oldSelectedBlocks.begin(); i != oldBlocksEnd; ++i) {
        RenderBlock* block = i->key;
        RenderBlockSelectionInfo* newInfo = newSelectedBlocks.get(block);
        RenderBlockSelectionInfo* oldInfo = i->value.get();
        if (!newInfo || oldInfo->rects() != newInfo->rects() || oldInfo->state() != newInfo->state()) {
            oldInfo->repaint();
            if (newInfo) {
                newInfo->repaint();
                newSelectedBlocks.remove(block);
            }
        }
    }

    // Any new blocks that remain were not found in the old blocks dict, and so they need to be updated.
    SelectedBlockMap::iterator newBlocksEnd = newSelectedBlocks.end();
    for (SelectedBlockMap::iterator i = newSelectedBlocks.begin(); i != newBlocksEnd; ++i)
        i->value->repaint();
}