/**
* NON-DOM INTERNAL: Within DOM actions,we sometimes need to be able to control which mutation
* events are spawned. This version of the removeChild operation allows us to do so. It is not
* intended for use by application programs.
*/
Node internalRemoveChild(Node oldChild, boolean replace) throws DOMException {
CoreDocumentImpl ownerDocument = ownerDocument();
if (ownerDocument.errorChecking) {
if (isReadOnly()) {
throw new DOMException(
DOMException.NO_MODIFICATION_ALLOWED_ERR,
DOMMessageFormatter.formatMessage(
DOMMessageFormatter.DOM_DOMAIN, "NO_MODIFICATION_ALLOWED_ERR", null));
}
if (oldChild != null && oldChild.getParentNode() != this) {
throw new DOMException(
DOMException.NOT_FOUND_ERR,
DOMMessageFormatter.formatMessage(
DOMMessageFormatter.DOM_DOMAIN, "NOT_FOUND_ERR", null));
}
}
ChildNode oldInternal = (ChildNode) oldChild;
// notify document
ownerDocument.removingNode(this, oldInternal, replace);
// update cached length if we have any
if (fNodeListCache != null) {
if (fNodeListCache.fLength != -1) {
fNodeListCache.fLength--;
}
if (fNodeListCache.fChildIndex != -1) {
// if the removed node is the cached node
// move the cache to its (soon former) previous sibling
if (fNodeListCache.fChild == oldInternal) {
fNodeListCache.fChildIndex--;
fNodeListCache.fChild = oldInternal.previousSibling();
} else {
// otherwise just invalidate the cache
fNodeListCache.fChildIndex = -1;
}
}
}
// Patch linked list around oldChild
// Note: lastChild == firstChild.previousSibling
if (oldInternal == firstChild) {
// removing first child
oldInternal.isFirstChild(false);
firstChild = oldInternal.nextSibling;
if (firstChild != null) {
firstChild.isFirstChild(true);
firstChild.previousSibling = oldInternal.previousSibling;
}
} else {
ChildNode prev = oldInternal.previousSibling;
ChildNode next = oldInternal.nextSibling;
prev.nextSibling = next;
if (next == null) {
// removing last child
firstChild.previousSibling = prev;
} else {
// removing some other child in the middle
next.previousSibling = prev;
}
}
// Save previous sibling for normalization checking.
ChildNode oldPreviousSibling = oldInternal.previousSibling();
// Remove oldInternal's references to tree
oldInternal.ownerNode = ownerDocument;
oldInternal.isOwned(false);
oldInternal.nextSibling = null;
oldInternal.previousSibling = null;
changed();
// notify document
ownerDocument.removedNode(this, replace);
checkNormalizationAfterRemove(oldPreviousSibling);
return oldInternal;
} // internalRemoveChild(Node,boolean):Node
