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Implement |nsFormHistory::RemoveAllEntries| - allows UI to clear Satchel database.
r=hewitt


git-svn-id: svn://10.0.0.236/trunk@137250 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
ben%netscape.com 2003-02-01 09:10:26 +00:00
parent fa95f90c16
commit 736f461f33
1 changed files with 47 additions and 1 deletions
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48
mozilla/toolkit/components/satchel/src/nsFormHistory.cpp
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@ -211,7 +211,53 @@ nsFormHistory::RemoveEntriesForName(const nsAString & name)
NS_IMETHODIMP
nsFormHistory::RemoveAllEntries()
{
return NS_ERROR_NOT_IMPLEMENTED;
nsresult rv = OpenDatabase(); // lazily ensure that the database is open
NS_ENSURE_SUCCESS(rv, rv);
if (!mTable) return NS_OK;
mdb_err err;
mdb_count count;
err = mTable->GetCount(mEnv, &count);
if (err != 0) return NS_ERROR_FAILURE;
// Begin the batch.
int marker;
err = mTable->StartBatchChangeHint(mEnv, &marker);
NS_ASSERTION(err == 0, "unable to start batch");
if (err != 0) return NS_ERROR_FAILURE;
// XXX from here until end batch, no early returns!
for (mdb_pos pos = count - 1; pos >= 0; --pos) {
nsCOMPtr<nsIMdbRow> row;
err = mTable->PosToRow(mEnv, pos, getter_AddRefs(row));
NS_ASSERTION(err == 0, "unable to get row");
if (err != 0)
break;
NS_ASSERTION(row != nsnull, "no row");
if (! row)
continue;
// Officially cut the row *now*, before notifying any observers:
// that way, any re-entrant calls won't find the row.
err = mTable->CutRow(mEnv, row);
NS_ASSERTION(err == 0, "couldn't cut row");
if (err != 0)
continue;
// possibly avoid leakage
err = row->CutAllColumns(mEnv);
NS_ASSERTION(err == 0, "couldn't cut all columns");
// we'll notify regardless of whether we could successfully
// CutAllColumns or not.
}
// Finish the batch.
err = mTable->EndBatchChangeHint(mEnv, &marker);
NS_ASSERTION(err == 0, "error ending batch");
return (err == 0) ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHODIMP