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playlist: make reverse operate on iterator range

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This commit is contained in:
Andrzej Rybczak
2012-09-18 21:17:04 +02:00
parent 059592e28e
commit e108604641
3 changed files with 20 additions and 27 deletions
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23
src/playlist.cpp
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@@ -223,27 +223,12 @@ bool Playlist::isFiltered()
void Playlist::Reverse()
{
if (isFiltered())
return;
Statusbar::msg("Reversing playlist order...");
size_t beginning = -1, end = -1;
for (size_t i = 0; i < w.size(); ++i)
{
if (w.at(i).isSelected())
{
if (beginning == size_t(-1))
beginning = i;
end = i;
}
}
if (beginning == size_t(-1)) // no selected items
{
beginning = 0;
end = w.size();
}
auto begin = w.begin(), end = w.end();
std::tie(begin, end) = getSelectedRange(begin, end);
Mpd.StartCommandsList();
for (size_t i = beginning, j = end-1; i < (beginning+end)/2; ++i, --j)
Mpd.Swap(i, j);
for (--end; begin < end; ++begin, --end)
Mpd.Swap(begin->value().getPosition(), end->value().getPosition());
if (Mpd.CommitCommandsList())
Statusbar::msg("Playlist reversed");
}