public Node removeChild(Node oldChild) throws DOMException {
if (oldChild == null) {
throw new IllegalArgumentException(Messages.getString("imageio.62"));
}
IIOMetadataNode oldIIOChild = (IIOMetadataNode) oldChild;
// Fix next and previous
IIOMetadataNode previous = oldIIOChild.previousSibling;
IIOMetadataNode next = oldIIOChild.nextSibling;
if (previous != null) {
previous.nextSibling = next;
}
if (next != null) {
next.previousSibling = previous;
}
// Fix this node
if (lastChild == oldIIOChild) {
lastChild = previous;
}
if (firstChild == oldIIOChild) {
firstChild = next;
}
nChildren--;
// Fix old child
oldIIOChild.parent = null;
oldIIOChild.previousSibling = null;
oldIIOChild.nextSibling = null;
return oldIIOChild;
}
public Node replaceChild(Node newChild, Node oldChild) throws DOMException {
if (newChild == null) {
throw new IllegalArgumentException(Messages.getString("imageio.61"));
}
IIOMetadataNode newIIOChild = (IIOMetadataNode) newChild;
IIOMetadataNode oldIIOChild = (IIOMetadataNode) oldChild;
IIOMetadataNode next = oldIIOChild.nextSibling;
IIOMetadataNode previous = oldIIOChild.previousSibling;
// Fix new node
newIIOChild.parent = this;
newIIOChild.nextSibling = next;
newIIOChild.previousSibling = previous;
// Fix this node
if (lastChild == oldIIOChild) {
lastChild = newIIOChild;
}
if (firstChild == oldIIOChild) {
firstChild = newIIOChild;
}
// Fix siblings
if (next != null) {
next.previousSibling = newIIOChild;
}
if (previous != null) {
previous.nextSibling = newIIOChild;
}
// Fix old child
oldIIOChild.parent = null;
oldIIOChild.nextSibling = next;
oldIIOChild.previousSibling = previous;
return oldIIOChild;
}
public Node insertBefore(Node newChild, Node refChild) throws DOMException {
if (newChild == null) {
throw new IllegalArgumentException(Messages.getString("imageio.61"));
}
IIOMetadataNode newIIOChild = (IIOMetadataNode) newChild;
IIOMetadataNode refIIOChild = (IIOMetadataNode) refChild;
newIIOChild.parent = this;
if (refIIOChild == null) {
newIIOChild.nextSibling = null;
newIIOChild.previousSibling = lastChild;
// Fix this node
lastChild = newIIOChild;
if (firstChild == null) {
firstChild = newIIOChild;
}
} else {
newIIOChild.nextSibling = refIIOChild;
newIIOChild.previousSibling = refIIOChild.previousSibling;
// Fix this node
if (firstChild == refIIOChild) {
firstChild = newIIOChild;
}
// Fix next node
if (refIIOChild != null) {
refIIOChild.previousSibling = newIIOChild;
}
}
// Fix prev node
if (newIIOChild.previousSibling != null) {
newIIOChild.previousSibling.nextSibling = newIIOChild;
}
nChildren++;
return newIIOChild;
}