NS_IMETHODIMP
CompositionTransaction::DoTransaction() {
if (NS_WARN_IF(!mEditorBase)) {
return NS_ERROR_NOT_INITIALIZED;
}
// Fail before making any changes if there's no selection controller
nsCOMPtr<nsISelectionController> selCon;
mEditorBase->GetSelectionController(getter_AddRefs(selCon));
NS_ENSURE_TRUE(selCon, NS_ERROR_NOT_INITIALIZED);
// Advance caret: This requires the presentation shell to get the selection.
if (mReplaceLength == 0) {
ErrorResult rv;
mTextNode->InsertData(mOffset, mStringToInsert, rv);
if (NS_WARN_IF(rv.Failed())) {
return rv.StealNSResult();
}
mEditorBase->RangeUpdaterRef().SelAdjInsertText(*mTextNode, mOffset,
mStringToInsert);
} else {
uint32_t replaceableLength = mTextNode->TextLength() - mOffset;
ErrorResult rv;
mTextNode->ReplaceData(mOffset, mReplaceLength, mStringToInsert, rv);
if (NS_WARN_IF(rv.Failed())) {
return rv.StealNSResult();
}
mEditorBase->RangeUpdaterRef().SelAdjDeleteText(mTextNode, mOffset,
mReplaceLength);
mEditorBase->RangeUpdaterRef().SelAdjInsertText(*mTextNode, mOffset,
mStringToInsert);
// If IME text node is multiple node, ReplaceData doesn't remove all IME
// text. So we need remove remained text into other text node.
if (replaceableLength < mReplaceLength) {
int32_t remainLength = mReplaceLength - replaceableLength;
nsCOMPtr<nsINode> node = mTextNode->GetNextSibling();
while (node && node->IsText() && remainLength > 0) {
Text* text = static_cast<Text*>(node.get());
uint32_t textLength = text->TextLength();
text->DeleteData(0, remainLength, IgnoreErrors());
mEditorBase->RangeUpdaterRef().SelAdjDeleteText(text, 0, remainLength);
remainLength -= textLength;
node = node->GetNextSibling();
}
}
}
nsresult rv = SetSelectionForRanges();
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP
InsertTextTransaction::DoTransaction()
{
if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mTextNode)) {
return NS_ERROR_NOT_AVAILABLE;
}
ErrorResult rv;
mTextNode->InsertData(mOffset, mStringToInsert, rv);
if (NS_WARN_IF(rv.Failed())) {
return rv.StealNSResult();
}
// Only set selection to insertion point if editor gives permission
if (mEditorBase->GetShouldTxnSetSelection()) {
RefPtr<Selection> selection = mEditorBase->GetSelection();
if (NS_WARN_IF(!selection)) {
return NS_ERROR_FAILURE;
}
DebugOnly<nsresult> rv =
selection->Collapse(mTextNode, mOffset + mStringToInsert.Length());
NS_ASSERTION(NS_SUCCEEDED(rv),
"Selection could not be collapsed after insert");
} else {
// Do nothing - DOM Range gravity will adjust selection
}
mEditorBase->RangeUpdaterRef().
SelAdjInsertText(*mTextNode, mOffset, mStringToInsert);
return NS_OK;
}
NS_IMETHODIMP
DeleteTextTransaction::DoTransaction()
{
if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mCharData)) {
return NS_ERROR_NOT_AVAILABLE;
}
// Get the text that we're about to delete
ErrorResult err;
mCharData->SubstringData(mOffset, mLengthToDelete, mDeletedText, err);
if (NS_WARN_IF(err.Failed())) {
return err.StealNSResult();
}
mCharData->DeleteData(mOffset, mLengthToDelete, err);
if (NS_WARN_IF(err.Failed())) {
return err.StealNSResult();
}
mEditorBase->RangeUpdaterRef().
SelAdjDeleteText(mCharData, mOffset, mLengthToDelete);
if (!mEditorBase->AllowsTransactionsToChangeSelection()) {
return NS_OK;
}
RefPtr<Selection> selection = mEditorBase->GetSelection();
if (NS_WARN_IF(!selection)) {
return NS_ERROR_FAILURE;
}
ErrorResult error;
selection->Collapse(EditorRawDOMPoint(mCharData, mOffset), error);
if (NS_WARN_IF(error.Failed())) {
return error.StealNSResult();
}
return NS_OK;
}
