void
nsFilteredContentIterator::Prev()
{
if (mIsOutOfRange || !mCurrentIterator) {
NS_ASSERTION(mCurrentIterator, "Missing iterator!");
return;
}
// If we are switching directions then
// we need to switch how we process the nodes
if (mDirection != eBackward) {
nsresult rv = SwitchDirections(false);
if (NS_FAILED(rv)) {
return;
}
}
mCurrentIterator->Prev();
if (mCurrentIterator->IsDone()) {
return;
}
// If we can't get the current node then
// don't check to see if we can skip it
nsINode *currentNode = mCurrentIterator->GetCurrentNode();
nsCOMPtr<nsIDOMNode> node(do_QueryInterface(currentNode));
CheckAdvNode(node, mDidSkip, eBackward);
}
void FilteredContentIterator::Next() {
if (mIsOutOfRange || !mCurrentIterator) {
NS_ASSERTION(mCurrentIterator, "Missing iterator!");
return;
}
// If we are switching directions then
// we need to switch how we process the nodes
if (mDirection != eForward) {
nsresult rv = SwitchDirections(true);
if (NS_FAILED(rv)) {
return;
}
}
mCurrentIterator->Next();
if (mCurrentIterator->IsDone()) {
return;
}
// If we can't get the current node then
// don't check to see if we can skip it
nsINode* currentNode = mCurrentIterator->GetCurrentNode();
CheckAdvNode(currentNode, mDidSkip, eForward);
}
//------------------------------------------------------------
void
nsFilteredContentIterator::Last()
{
if (!mCurrentIterator) {
NS_ERROR("Missing iterator!");
return;
}
// If we are switching directions then
// we need to switch how we process the nodes
if (mDirection != eBackward) {
mCurrentIterator = mIterator;
mDirection = eBackward;
mIsOutOfRange = false;
}
mCurrentIterator->Last();
if (mCurrentIterator->IsDone()) {
return;
}
nsINode *currentNode = mCurrentIterator->GetCurrentNode();
nsCOMPtr<nsIDOMNode> node(do_QueryInterface(currentNode));
bool didCross;
CheckAdvNode(node, didCross, eBackward);
}
void FilteredContentIterator::First() {
if (!mCurrentIterator) {
NS_ERROR("Missing iterator!");
return;
}
// If we are switching directions then
// we need to switch how we process the nodes
if (mDirection != eForward) {
mCurrentIterator = &mPreIterator;
mDirection = eForward;
mIsOutOfRange = false;
}
mCurrentIterator->First();
if (mCurrentIterator->IsDone()) {
return;
}
nsINode* currentNode = mCurrentIterator->GetCurrentNode();
bool didCross;
CheckAdvNode(currentNode, didCross, eForward);
}