C++ CounterNode::insertAfter方法代码示例

static CounterNode* makeCounterNode(RenderObject* object, const AtomicString& identifier, bool alwaysCreateCounter)
{
    ASSERT(object);

    if (object->m_hasCounterNodeMap)
        if (CounterMap* nodeMap = counterMaps().get(object))
            if (CounterNode* node = nodeMap->get(identifier.impl()))
                return node;

    bool isReset = false;
    int value = 0;
    if (!planCounter(object, identifier, isReset, value) && !alwaysCreateCounter)
        return 0;

    CounterNode* newParent = 0;
    CounterNode* newPreviousSibling = 0;
    CounterNode* newNode = new CounterNode(object, isReset, value);
    if (findPlaceForCounter(object, identifier, isReset, newParent, newPreviousSibling))
        newParent->insertAfter(newNode, newPreviousSibling, identifier);
    CounterMap* nodeMap;
    if (object->m_hasCounterNodeMap)
        nodeMap = counterMaps().get(object);
    else {
        nodeMap = new CounterMap;
        counterMaps().set(object, nodeMap);
        object->m_hasCounterNodeMap = true;
    }
    nodeMap->set(identifier.impl(), newNode);
    if (newNode->parent() || !object->nextInPreOrder(object->parent()))
        return newNode;
    // Checking if some nodes that were previously counter tree root nodes
    // should become children of this node now.
    CounterMaps& maps = counterMaps();
    RenderObject* stayWithin = object->parent();
    for (RenderObject* currentRenderer = object->nextInPreOrder(stayWithin); currentRenderer; currentRenderer = currentRenderer->nextInPreOrder(stayWithin)) {
        if (!currentRenderer->m_hasCounterNodeMap)
            continue;
        CounterNode* currentCounter = maps.get(currentRenderer)->get(identifier.impl());
        if (!currentCounter)
            continue;
        if (currentCounter->parent()) {
            ASSERT(newNode->firstChild());
            if (currentRenderer->lastChild())
                currentRenderer = currentRenderer->lastChild();
            continue;
        }
        if (stayWithin != currentRenderer->parent() || !currentCounter->hasResetType())
            newNode->insertAfter(currentCounter, newNode->lastChild(), identifier);
        if (currentRenderer->lastChild())
            currentRenderer = currentRenderer->lastChild();
    }
    return newNode;
}

static void updateCounters(RenderObject* renderer)
{
    ASSERT(renderer->style());
    const CounterDirectiveMap* directiveMap = renderer->style()->counterDirectives();
    if (!directiveMap)
        return;
    CounterDirectiveMap::const_iterator end = directiveMap->end();
    if (!renderer->hasCounterNodeMap()) {
        for (CounterDirectiveMap::const_iterator it = directiveMap->begin(); it != end; ++it)
            makeCounterNode(renderer, AtomicString(it->first.get()), false);
        return;
    }
    CounterMap* counterMap = counterMaps().get(renderer);
    ASSERT(counterMap);
    for (CounterDirectiveMap::const_iterator it = directiveMap->begin(); it != end; ++it) {
        RefPtr<CounterNode> node = counterMap->get(it->first.get());
        if (!node) {
            makeCounterNode(renderer, AtomicString(it->first.get()), false);
            continue;
        }
        CounterNode* newParent = 0;
        CounterNode* newPreviousSibling;

        findPlaceForCounter(renderer, AtomicString(it->first.get()), node->hasResetType(), newParent, newPreviousSibling);
        if (node != counterMap->get(it->first.get()))
            continue;
        CounterNode* parent = node->parent();
        if (newParent == parent && newPreviousSibling == node->previousSibling())
            continue;
        if (parent)
            parent->removeChild(node.get());
        if (newParent)
            newParent->insertAfter(node.get(), newPreviousSibling, it->first.get());
    }
}

static CounterNode* makeCounterNode(RenderObject* object, const AtomicString& identifier, bool alwaysCreateCounter)
{
    ASSERT(object);

    if (object->hasCounterNodeMap()) {
        if (CounterMap* nodeMap = counterMaps().get(object)) {
            if (CounterNode* node = nodeMap->get(identifier.impl()).get())
                return node;
        }
    }

    bool isReset = false;
    int value = 0;
    if (!planCounter(object, identifier, isReset, value) && !alwaysCreateCounter)
        return 0;

    CounterNode* newParent = 0;
    CounterNode* newPreviousSibling = 0;
    RefPtr<CounterNode> newNode = CounterNode::create(object, isReset, value);
    if (findPlaceForCounter(object, identifier, isReset, newParent, newPreviousSibling))
        newParent->insertAfter(newNode.get(), newPreviousSibling, identifier);
    CounterMap* nodeMap;
    if (object->hasCounterNodeMap())
        nodeMap = counterMaps().get(object);
    else {
        nodeMap = new CounterMap;
        counterMaps().set(object, nodeMap);
        object->setHasCounterNodeMap(true);
    }
    nodeMap->set(identifier.impl(), newNode);
    if (newNode->parent())
        return newNode.get();
    // Checking if some nodes that were previously counter tree root nodes
    // should become children of this node now.
    CounterMaps& maps = counterMaps();
    Element* stayWithin = parentElement(object);
    bool skipDescendants;
    for (RenderObject* currentRenderer = nextInPreOrder(object, stayWithin); currentRenderer; currentRenderer = nextInPreOrder(currentRenderer, stayWithin, skipDescendants)) {
        skipDescendants = false;
        if (!currentRenderer->hasCounterNodeMap())
            continue;
        CounterNode* currentCounter = maps.get(currentRenderer)->get(identifier.impl()).get();
        if (!currentCounter)
            continue;
        skipDescendants = true;
        if (currentCounter->parent())
            continue;
        if (stayWithin == parentElement(currentRenderer) && currentCounter->hasResetType())
            break;
        newNode->insertAfter(currentCounter, newNode->lastChild(), identifier);
    }
    return newNode.get();
}

static CounterNode* counter(RenderObject* object, const AtomicString& counterName, bool alwaysCreateCounter)
{
    ASSERT(object);

    if (object->m_hasCounterNodeMap)
        if (CounterMap* nodeMap = counterMaps().get(object))
            if (CounterNode* node = nodeMap->get(counterName.impl()))
                return node;

    bool isReset = false;
    int value = 0;
    if (!planCounter(object, counterName, isReset, value) && !alwaysCreateCounter)
        return 0;

    CounterNode* newParent = 0;
    CounterNode* newPreviousSibling = 0;
    CounterNode* newNode;
    if (findPlaceForCounter(object, counterName, isReset, newParent, newPreviousSibling)) {
        newNode = new CounterNode(object, isReset, value);
        newParent->insertAfter(newNode, newPreviousSibling);
    } else {
        // Make a reset node for counters that aren't inside an existing reset node.
        newNode = new CounterNode(object, true, value);
    }

    CounterMap* nodeMap;
    if (object->m_hasCounterNodeMap)
        nodeMap = counterMaps().get(object);
    else {
        nodeMap = new CounterMap;
        counterMaps().set(object, nodeMap);
        object->m_hasCounterNodeMap = true;
    }
    nodeMap->set(counterName.impl(), newNode);

    return newNode;
}