nsresult
nsContentEventHandler::GetFlatTextOffsetOfRange(nsIContent* aRootContent,
nsINode* aNode,
PRInt32 aNodeOffset,
PRUint32* aNativeOffset)
{
NS_ASSERTION(aNativeOffset, "param is invalid");
nsCOMPtr<nsIRange> prev = new nsRange();
NS_ENSURE_TRUE(prev, NS_ERROR_OUT_OF_MEMORY);
nsCOMPtr<nsIDOMRange> domPrev(do_QueryInterface(prev));
NS_ASSERTION(domPrev, "nsRange doesn't have nsIDOMRange??");
nsCOMPtr<nsIDOMNode> rootDOMNode(do_QueryInterface(aRootContent));
domPrev->SetStart(rootDOMNode, 0);
nsCOMPtr<nsIDOMNode> startDOMNode(do_QueryInterface(aNode));
NS_ASSERTION(startDOMNode, "startNode doesn't have nsIDOMNode");
domPrev->SetEnd(startDOMNode, aNodeOffset);
nsAutoString prevStr;
nsresult rv = GenerateFlatTextContent(prev, prevStr);
NS_ENSURE_SUCCESS(rv, rv);
*aNativeOffset = prevStr.Length();
return NS_OK;
}
nsresult
nsContentEventHandler::GetFlatTextOffsetOfRange(nsIContent* aRootContent,
nsINode* aNode,
PRInt32 aNodeOffset,
PRUint32* aNativeOffset)
{
NS_ASSERTION(aNativeOffset, "param is invalid");
nsCOMPtr<nsIRange> prev = new nsRange();
NS_ENSURE_TRUE(prev, NS_ERROR_OUT_OF_MEMORY);
nsCOMPtr<nsIDOMRange> domPrev(do_QueryInterface(prev));
NS_ASSERTION(domPrev, "nsRange doesn't have nsIDOMRange??");
nsCOMPtr<nsIDOMNode> rootDOMNode(do_QueryInterface(aRootContent));
domPrev->SetStart(rootDOMNode, 0);
nsCOMPtr<nsIDOMNode> startDOMNode(do_QueryInterface(aNode));
NS_ASSERTION(startDOMNode, "startNode doesn't have nsIDOMNode");
domPrev->SetEnd(startDOMNode, aNodeOffset);
nsCOMPtr<nsIContentIterator> iter;
nsresult rv = NS_NewContentIterator(getter_AddRefs(iter));
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(iter, "NS_NewContentIterator succeeded, but the result is null");
iter->Init(domPrev);
nsCOMPtr<nsINode> startNode = do_QueryInterface(startDOMNode);
nsINode* endNode = aNode;
*aNativeOffset = 0;
for (; !iter->IsDone(); iter->Next()) {
nsINode* node = iter->GetCurrentNode();
if (!node || !node->IsNodeOfType(nsINode::eCONTENT))
continue;
nsIContent* content = static_cast<nsIContent*>(node);
if (node->IsNodeOfType(nsINode::eTEXT)) {
// Note: our range always starts from offset 0
if (node == endNode)
*aNativeOffset += GetNativeTextLength(content, aNodeOffset);
else
*aNativeOffset += GetNativeTextLength(content);
} else if (IsContentBR(content)) {
#if defined(XP_WIN)
// On Windows, the length of the newline is 2.
*aNativeOffset += 2;
#else
// On other platforms, the length of the newline is 1.
*aNativeOffset += 1;
#endif
}
}
return NS_OK;
}
nsresult
nsContentEventHandler::GetFlatTextOffsetOfRange(nsIContent* aRootContent,
nsINode* aNode,
PRInt32 aNodeOffset,
PRUint32* aNativeOffset)
{
NS_ASSERTION(aNativeOffset, "param is invalid");
nsRefPtr<nsRange> prev = new nsRange();
nsCOMPtr<nsIDOMNode> rootDOMNode(do_QueryInterface(aRootContent));
prev->SetStart(rootDOMNode, 0);
nsCOMPtr<nsIDOMNode> startDOMNode(do_QueryInterface(aNode));
NS_ASSERTION(startDOMNode, "startNode doesn't have nsIDOMNode");
prev->SetEnd(startDOMNode, aNodeOffset);
nsCOMPtr<nsIContentIterator> iter = NS_NewContentIterator();
iter->Init(prev);
nsCOMPtr<nsINode> startNode = do_QueryInterface(startDOMNode);
nsINode* endNode = aNode;
*aNativeOffset = 0;
for (; !iter->IsDone(); iter->Next()) {
nsINode* node = iter->GetCurrentNode();
if (!node)
break;
if (!node->IsNodeOfType(nsINode::eCONTENT))
continue;
nsIContent* content = static_cast<nsIContent*>(node);
if (node->IsNodeOfType(nsINode::eTEXT)) {
// Note: our range always starts from offset 0
if (node == endNode)
*aNativeOffset += GetNativeTextLength(content, aNodeOffset);
else
*aNativeOffset += GetNativeTextLength(content);
} else if (IsContentBR(content)) {
#if defined(XP_WIN)
// On Windows, the length of the newline is 2.
*aNativeOffset += 2;
#else
// On other platforms, the length of the newline is 1.
*aNativeOffset += 1;
#endif
}
}
return NS_OK;
}