예제 #1
0
void TreeScope::setParentTreeScope(TreeScope& newParentScope)
{
    // A document node cannot be re-parented.
    ASSERT(!m_rootNode.isDocumentNode());

    m_parentTreeScope = &newParentScope;
    setDocumentScope(newParentScope.documentScope());
}
예제 #2
0
    RelatedNodeRetargeter(Node& relatedNode, TreeScope& targetTreeScope)
        : m_relatedNode(relatedNode)
        , m_retargetedRelatedNode(&relatedNode)
    {
        TreeScope* currentTreeScope = &m_relatedNode.treeScope();
        if (LIKELY(currentTreeScope == &targetTreeScope))
            return;

        if (&currentTreeScope->documentScope() != &targetTreeScope.documentScope()) {
            m_hasDifferentTreeRoot = true;
            m_retargetedRelatedNode = nullptr;
            return;
        }
        if (relatedNode.inDocument() != targetTreeScope.rootNode().inDocument()) {
            m_hasDifferentTreeRoot = true;
            while (m_retargetedRelatedNode->isInShadowTree())
                m_retargetedRelatedNode = downcast<ShadowRoot>(m_retargetedRelatedNode->treeScope().rootNode()).host();
            return;
        }

        collectTreeScopes();

        // FIXME: We should collect this while constructing the event path.
        Vector<TreeScope*, 8> targetTreeScopeAncestors;
        for (TreeScope* currentTreeScope = &targetTreeScope; currentTreeScope; currentTreeScope = currentTreeScope->parentTreeScope())
            targetTreeScopeAncestors.append(currentTreeScope);
        ASSERT_WITH_SECURITY_IMPLICATION(!targetTreeScopeAncestors.isEmpty());

        unsigned i = m_ancestorTreeScopes.size();
        unsigned j = targetTreeScopeAncestors.size();
        ASSERT_WITH_SECURITY_IMPLICATION(m_ancestorTreeScopes.last() == targetTreeScopeAncestors.last());
        while (m_ancestorTreeScopes[i - 1] == targetTreeScopeAncestors[j - 1]) {
            i--;
            j--;
            if (!i || !j)
                break;
        }

        m_lowestCommonAncestorIndex = i;
        m_retargetedRelatedNode = nodeInLowestCommonAncestor();
    }
예제 #3
0
RelatedNodeRetargeter::RelatedNodeRetargeter(Node& relatedNode, Node& target)
    : m_relatedNode(relatedNode)
    , m_retargetedRelatedNode(&relatedNode)
{
    auto& targetTreeScope = target.treeScope();
    TreeScope* currentTreeScope = &m_relatedNode.treeScope();
    if (LIKELY(currentTreeScope == &targetTreeScope && target.inDocument() && m_relatedNode.inDocument()))
        return;

    if (&currentTreeScope->documentScope() != &targetTreeScope.documentScope()) {
        m_hasDifferentTreeRoot = true;
        m_retargetedRelatedNode = nullptr;
        return;
    }
    if (relatedNode.inDocument() != target.inDocument()) {
        m_hasDifferentTreeRoot = true;
        m_retargetedRelatedNode = moveOutOfAllShadowRoots(relatedNode);
        return;
    }

    collectTreeScopes();

    // FIXME: We should collect this while constructing the event path.
    Vector<TreeScope*, 8> targetTreeScopeAncestors;
    for (TreeScope* currentTreeScope = &targetTreeScope; currentTreeScope; currentTreeScope = currentTreeScope->parentTreeScope())
        targetTreeScopeAncestors.append(currentTreeScope);
    ASSERT_WITH_SECURITY_IMPLICATION(!targetTreeScopeAncestors.isEmpty());

    unsigned i = m_ancestorTreeScopes.size();
    unsigned j = targetTreeScopeAncestors.size();
    ASSERT_WITH_SECURITY_IMPLICATION(m_ancestorTreeScopes.last() == targetTreeScopeAncestors.last());
    while (m_ancestorTreeScopes[i - 1] == targetTreeScopeAncestors[j - 1]) {
        i--;
        j--;
        if (!i || !j)
            break;
    }

    bool lowestCommonAncestorIsDocumentScope = i + 1 == m_ancestorTreeScopes.size();
    if (lowestCommonAncestorIsDocumentScope && !relatedNode.inDocument() && !target.inDocument()) {
        Node& targetAncestorInDocumentScope = i ? *downcast<ShadowRoot>(m_ancestorTreeScopes[i - 1]->rootNode()).shadowHost() : target;
        Node& relatedNodeAncestorInDocumentScope = j ? *downcast<ShadowRoot>(targetTreeScopeAncestors[j - 1]->rootNode()).shadowHost() : relatedNode;
        if (targetAncestorInDocumentScope.rootNode() != relatedNodeAncestorInDocumentScope.rootNode()) {
            m_hasDifferentTreeRoot = true;
            m_retargetedRelatedNode = moveOutOfAllShadowRoots(relatedNode);
            return;
        }
    }

    m_lowestCommonAncestorIndex = i;
    m_retargetedRelatedNode = nodeInLowestCommonAncestor();
}
예제 #4
0
void DocumentOrderedMap::add(const AtomicStringImpl& key, Element& element, const TreeScope& treeScope)
{
    ASSERT_WITH_SECURITY_IMPLICATION(element.isInTreeScope());
    ASSERT_WITH_SECURITY_IMPLICATION(treeScope.rootNode()->containsIncludingShadowDOM(&element));
    if (!element.isInTreeScope() || &element.document() != treeScope.documentScope())
        return;
    Map::AddResult addResult = m_map.add(&key, MapEntry(&element));
    if (addResult.isNewEntry)
        return;

    MapEntry& entry = addResult.iterator->value;
    ASSERT_WITH_SECURITY_IMPLICATION(entry.count);
    entry.element = 0;
    entry.count++;
    entry.orderedList.clear();
}
예제 #5
0
Element* TreeScope::focusedElement()
{
    Document& document = m_rootNode.document();
    Element* element = document.focusedElement();

    if (!element && document.page())
        element = focusedFrameOwnerElement(document.page()->focusController().focusedFrame(), document.frame());
    if (!element)
        return nullptr;
    TreeScope* treeScope = &element->treeScope();
    RELEASE_ASSERT(&document == &treeScope->documentScope());
    while (treeScope != this && treeScope != &document) {
        auto& rootNode = treeScope->rootNode();
        if (is<ShadowRoot>(rootNode))
            element = downcast<ShadowRoot>(rootNode).host();
        else
            return nullptr;
        treeScope = &element->treeScope();
    }
    if (this != treeScope)
        return nullptr;
    return element;
}