NS_IMETHODIMP DeleteRangeTxn::DoTransaction(void)
{
#ifdef NS_DEBUG
if (gNoisy) { printf("Do Delete Range\n"); }
#endif
NS_ENSURE_TRUE(mStartParent && mEndParent && mCommonParent && mEditor, NS_ERROR_NOT_INITIALIZED);
nsresult result;
// build the child transactions
if (mStartParent==mEndParent)
{ // the selection begins and ends in the same node
result = CreateTxnsToDeleteBetween(mStartParent, mStartOffset, mEndOffset);
}
else
{ // the selection ends in a different node from where it started
// delete the relevant content in the start node
result = CreateTxnsToDeleteContent(mStartParent, mStartOffset, nsIEditor::eNext);
if (NS_SUCCEEDED(result))
{
// delete the intervening nodes
result = CreateTxnsToDeleteNodesBetween();
if (NS_SUCCEEDED(result))
{
// delete the relevant content in the end node
result = CreateTxnsToDeleteContent(mEndParent, mEndOffset, nsIEditor::ePrevious);
}
}
}
// if we've successfully built this aggregate transaction, then do it.
if (NS_SUCCEEDED(result)) {
result = EditAggregateTxn::DoTransaction();
}
NS_ENSURE_SUCCESS(result, result);
// only set selection to deletion point if editor gives permission
PRBool bAdjustSelection;
mEditor->ShouldTxnSetSelection(&bAdjustSelection);
if (bAdjustSelection)
{
nsCOMPtr<nsISelection> selection;
result = mEditor->GetSelection(getter_AddRefs(selection));
// At this point, it is possible that the frame for our root element
// might have been destroyed, in which case, the above call returns
// an error. We eat that error here intentionally. See bug 574558
// for a sample case where this happens.
NS_ENSURE_SUCCESS(result, NS_OK);
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
result = selection->Collapse(mStartParent, mStartOffset);
}
else
{
// do nothing - dom range gravity will adjust selection
}
return result;
}
NS_IMETHODIMP DeleteRangeTxn::DoTransaction(void)
{
#ifdef NS_DEBUG
if (gNoisy) { printf("Do Delete Range\n"); }
#endif
if (!mStartParent || !mEndParent || !mCommonParent || !mEditor)
return NS_ERROR_NOT_INITIALIZED;
nsresult result;
// build the child transactions
if (mStartParent==mEndParent)
{ // the selection begins and ends in the same node
result = CreateTxnsToDeleteBetween(mStartParent, mStartOffset, mEndOffset);
}
else
{ // the selection ends in a different node from where it started
// delete the relevant content in the start node
result = CreateTxnsToDeleteContent(mStartParent, mStartOffset, nsIEditor::eNext);
if (NS_SUCCEEDED(result))
{
// delete the intervening nodes
result = CreateTxnsToDeleteNodesBetween();
if (NS_SUCCEEDED(result))
{
// delete the relevant content in the end node
result = CreateTxnsToDeleteContent(mEndParent, mEndOffset, nsIEditor::ePrevious);
}
}
}
// if we've successfully built this aggregate transaction, then do it.
if (NS_SUCCEEDED(result)) {
result = EditAggregateTxn::DoTransaction();
}
if (NS_FAILED(result)) return result;
// only set selection to deletion point if editor gives permission
PRBool bAdjustSelection;
mEditor->ShouldTxnSetSelection(&bAdjustSelection);
if (bAdjustSelection)
{
nsCOMPtr<nsISelection> selection;
result = mEditor->GetSelection(getter_AddRefs(selection));
if (NS_FAILED(result)) return result;
if (!selection) return NS_ERROR_NULL_POINTER;
result = selection->Collapse(mStartParent, mStartOffset);
}
else
{
// do nothing - dom range gravity will adjust selection
}
return result;
}
NS_IMETHODIMP
DeleteRangeTransaction::DoTransaction()
{
MOZ_ASSERT(mRange && mEditorBase);
nsresult res;
// build the child transactions
nsCOMPtr<nsINode> startParent = mRange->GetStartParent();
int32_t startOffset = mRange->StartOffset();
nsCOMPtr<nsINode> endParent = mRange->GetEndParent();
int32_t endOffset = mRange->EndOffset();
MOZ_ASSERT(startParent && endParent);
if (startParent == endParent) {
// the selection begins and ends in the same node
res = CreateTxnsToDeleteBetween(startParent, startOffset, endOffset);
NS_ENSURE_SUCCESS(res, res);
} else {
// the selection ends in a different node from where it started. delete
// the relevant content in the start node
res = CreateTxnsToDeleteContent(startParent, startOffset, nsIEditor::eNext);
NS_ENSURE_SUCCESS(res, res);
// delete the intervening nodes
res = CreateTxnsToDeleteNodesBetween();
NS_ENSURE_SUCCESS(res, res);
// delete the relevant content in the end node
res = CreateTxnsToDeleteContent(endParent, endOffset, nsIEditor::ePrevious);
NS_ENSURE_SUCCESS(res, res);
}
// if we've successfully built this aggregate transaction, then do it.
res = EditAggregateTransaction::DoTransaction();
NS_ENSURE_SUCCESS(res, res);
// only set selection to deletion point if editor gives permission
bool bAdjustSelection;
mEditorBase->ShouldTxnSetSelection(&bAdjustSelection);
if (bAdjustSelection) {
RefPtr<Selection> selection = mEditorBase->GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
res = selection->Collapse(startParent, startOffset);
NS_ENSURE_SUCCESS(res, res);
}
// else do nothing - dom range gravity will adjust selection
return NS_OK;
}
