static nsresult GenerateFlatTextContent(nsIRange* aRange,
nsAFlatString& aString)
{
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");
nsCOMPtr<nsIDOMRange> domRange(do_QueryInterface(aRange));
NS_ASSERTION(domRange, "aRange doesn't have nsIDOMRange!");
iter->Init(domRange);
NS_ASSERTION(aString.IsEmpty(), "aString must be empty string");
nsINode* startNode = aRange->GetStartParent();
NS_ENSURE_TRUE(startNode, NS_ERROR_FAILURE);
nsINode* endNode = aRange->GetEndParent();
NS_ENSURE_TRUE(endNode, NS_ERROR_FAILURE);
if (startNode == endNode && startNode->IsNodeOfType(nsINode::eTEXT)) {
nsIContent* content = static_cast<nsIContent*>(startNode);
AppendSubString(aString, content, aRange->StartOffset(),
aRange->EndOffset() - aRange->StartOffset());
ConvertToNativeNewlines(aString);
return NS_OK;
}
nsAutoString tmpStr;
for (; !iter->IsDone(); iter->Next()) {
nsINode* node = iter->GetCurrentNode();
if (!node || !node->IsNodeOfType(nsINode::eCONTENT))
continue;
nsIContent* content = static_cast<nsIContent*>(node);
if (content->IsNodeOfType(nsINode::eTEXT)) {
if (content == startNode)
AppendSubString(aString, content, aRange->StartOffset(),
content->TextLength() - aRange->StartOffset());
else if (content == endNode)
AppendSubString(aString, content, 0, aRange->EndOffset());
else
AppendString(aString, content);
} else if (IsContentBR(content))
aString.Append(PRUnichar('\n'));
}
ConvertToNativeNewlines(aString);
return NS_OK;
}
//------------------------------------------------------------
nsresult
nsFilteredContentIterator::Init(nsINode* aRoot)
{
NS_ENSURE_TRUE(mPreIterator, NS_ERROR_FAILURE);
NS_ENSURE_TRUE(mIterator, NS_ERROR_FAILURE);
mIsOutOfRange = PR_FALSE;
mDirection = eForward;
mCurrentIterator = mPreIterator;
nsresult rv;
mRange = do_CreateInstance("@mozilla.org/content/range;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMRange> domRange(do_QueryInterface(mRange));
nsCOMPtr<nsIDOMNode> domNode(do_QueryInterface(aRoot));
if (domRange && domNode) {
domRange->SelectNode(domNode);
}
rv = mPreIterator->Init(domRange);
NS_ENSURE_SUCCESS(rv, rv);
return mIterator->Init(domRange);
}
nsresult
nsContentEventHandler::SetRangeFromFlatTextOffset(
nsIRange* aRange,
PRUint32 aNativeOffset,
PRUint32 aNativeLength,
PRBool aExpandToClusterBoundaries)
{
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");
rv = iter->Init(mRootContent);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMRange> domRange(do_QueryInterface(aRange));
NS_ASSERTION(domRange, "aRange doesn't have nsIDOMRange!");
PRUint32 nativeOffset = 0;
PRUint32 nativeEndOffset = aNativeOffset + aNativeLength;
nsCOMPtr<nsIContent> content;
for (; !iter->IsDone(); iter->Next()) {
nsINode* node = iter->GetCurrentNode();
if (!node || !node->IsNodeOfType(nsINode::eCONTENT))
continue;
nsIContent* content = static_cast<nsIContent*>(node);
PRUint32 nativeTextLength;
nativeTextLength = GetNativeTextLength(content);
if (nativeTextLength == 0)
continue;
if (nativeOffset <= aNativeOffset &&
aNativeOffset < nativeOffset + nativeTextLength) {
nsCOMPtr<nsIDOMNode> domNode(do_QueryInterface(content));
NS_ASSERTION(domNode, "aContent doesn't have nsIDOMNode!");
PRUint32 xpOffset =
content->IsNodeOfType(nsINode::eTEXT) ?
ConvertToXPOffset(content, aNativeOffset - nativeOffset) : 0;
if (aExpandToClusterBoundaries) {
rv = ExpandToClusterBoundary(content, PR_FALSE, &xpOffset);
NS_ENSURE_SUCCESS(rv, rv);
}
rv = domRange->SetStart(domNode, PRInt32(xpOffset));
NS_ENSURE_SUCCESS(rv, rv);
if (aNativeLength == 0) {
// Ensure that the end offset and the start offset are same.
rv = domRange->SetEnd(domNode, PRInt32(xpOffset));
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
}
if (nativeEndOffset <= nativeOffset + nativeTextLength) {
nsCOMPtr<nsIDOMNode> domNode(do_QueryInterface(content));
NS_ASSERTION(domNode, "aContent doesn't have nsIDOMNode!");
PRUint32 xpOffset;
if (content->IsNodeOfType(nsINode::eTEXT)) {
xpOffset = ConvertToXPOffset(content, nativeEndOffset - nativeOffset);
if (aExpandToClusterBoundaries) {
rv = ExpandToClusterBoundary(content, PR_TRUE, &xpOffset);
NS_ENSURE_SUCCESS(rv, rv);
}
} else {
// Use first position of next node, because the end node is ignored
// by ContentIterator when the offset is zero.
xpOffset = 0;
iter->Next();
if (iter->IsDone())
break;
domNode = do_QueryInterface(iter->GetCurrentNode());
}
rv = domRange->SetEnd(domNode, PRInt32(xpOffset));
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
nativeOffset += nativeTextLength;
}
if (nativeOffset < aNativeOffset)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMNode> domNode(do_QueryInterface(mRootContent));
NS_ASSERTION(domNode, "lastContent doesn't have nsIDOMNode!");
if (!content) {
rv = domRange->SetStart(domNode, 0);
NS_ENSURE_SUCCESS(rv, rv);
}
rv = domRange->SetEnd(domNode, PRInt32(mRootContent->GetChildCount()));
NS_ASSERTION(NS_SUCCEEDED(rv), "nsIDOMRange::SetEnd failed");
return rv;
}
