C++ (Cpp) willRemoveChild Exemples

Exemple #1

bool ContainerNode::removeChild(Node* oldChild, ExceptionCode& ec)
{
    // Check that this node is not "floating".
    // If it is, it can be deleted as a side effect of sending mutation events.
    ASSERT(refCount() || parentOrShadowHostNode());

    RefPtr<Node> protect(this);

    ec = 0;

    // NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
    if (isReadOnlyNode()) {
        ec = NO_MODIFICATION_ALLOWED_ERR;
        return false;
    }

    // NOT_FOUND_ERR: Raised if oldChild is not a child of this node.
    if (!oldChild || oldChild->parentNode() != this) {
        ec = NOT_FOUND_ERR;
        return false;
    }

    RefPtr<Node> child = oldChild;

    document().removeFocusedNodeOfSubtree(child.get());

#if ENABLE(FULLSCREEN_API)
    document().removeFullScreenElementOfSubtree(child.get());
#endif

    // Events fired when blurring currently focused node might have moved this
    // child into a different parent.
    if (child->parentNode() != this) {
        ec = NOT_FOUND_ERR;
        return false;
    }

    willRemoveChild(child.get());

    // Mutation events might have moved this child into a different parent.
    if (child->parentNode() != this) {
        ec = NOT_FOUND_ERR;
        return false;
    }

    {
        WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates;

        Node* prev = child->previousSibling();
        Node* next = child->nextSibling();
        removeBetween(prev, next, child.get());
        childrenChanged(false, prev, next, -1);
        ChildNodeRemovalNotifier(this).notify(child.get());
    }
    dispatchSubtreeModifiedEvent();

    return child;
}

Exemple #2

Fichier : ContainerNode.cpp Projet : sinoory/webv8

bool ContainerNode::removeChild(Node* oldChild, ExceptionCode& ec)
{
    // Check that this node is not "floating".
    // If it is, it can be deleted as a side effect of sending mutation events.
    ASSERT(refCount() || parentOrShadowHostNode());

    Ref<ContainerNode> protect(*this);

    ec = 0;

    // NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
    if (isReadOnlyNode()) {
        ec = NO_MODIFICATION_ALLOWED_ERR;
        return false;
    }

    // NOT_FOUND_ERR: Raised if oldChild is not a child of this node.
    if (!oldChild || oldChild->parentNode() != this) {
        ec = NOT_FOUND_ERR;
        return false;
    }

    Ref<Node> child(*oldChild);

    document().removeFocusedNodeOfSubtree(&child.get());

#if ENABLE(FULLSCREEN_API)
    document().removeFullScreenElementOfSubtree(&child.get());
#endif

    // Events fired when blurring currently focused node might have moved this
    // child into a different parent.
    if (child->parentNode() != this) {
        ec = NOT_FOUND_ERR;
        return false;
    }

    willRemoveChild(child.get());

    // Mutation events might have moved this child into a different parent.
    if (child->parentNode() != this) {
        ec = NOT_FOUND_ERR;
        return false;
    }

    {
        WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates;

        Node* prev = child->previousSibling();
        Node* next = child->nextSibling();
        removeBetween(prev, next, child.get());

        notifyChildRemoved(child.get(), prev, next, ChildChangeSourceAPI);

        ChildNodeRemovalNotifier(*this).notify(child.get());
    }


    if (document().svgExtensions()) {
        Element* shadowHost = this->shadowHost();
        if (!shadowHost || !shadowHost->hasTagName(SVGNames::useTag))
            document().accessSVGExtensions()->rebuildElements();
    }

    dispatchSubtreeModifiedEvent();

    return true;
}