Method PlaylistRemove

src/music_gui.cpp:364–392

* Remove a song from a custom playlist. * @param song_index Index in the custom playlist to remove. */

 * @param song_index Index in the custom playlist to remove.
 */
void MusicSystem::PlaylistRemove(size_t song_index)
{
	if (!this->IsCustomPlaylist()) return;

	if (song_index >= this->active_playlist.size()) return;

	PlaylistEntry song = this->active_playlist[song_index];
	this->active_playlist.erase(std::next(std::begin(this->active_playlist), song_index));

	Playlist &playlist = this->standard_playlists[this->selected_playlist];
	auto it = std::end(playlist);
	if (this->IsShuffle()) {
		/* Playlist is shuffled, so remove the first instance. */
		it = std::ranges::find_if(playlist, [&song](const auto &s) { return s.filename == song.filename && s.cat_index == song.cat_index; });
	} else if (song_index < playlist.size()) {
		/* Not shuffled, we can remove the entry directly. */
		it = std::next(std::begin(playlist), song_index);
	}

	if (it == std::end(playlist)) return;
	it = playlist.erase(it);

	/* If it's the current song restart playback. */
	if (this->IsPlaying() && std::distance(std::begin(playlist), it) == this->playlist_position) this->Play();

	this->SaveCustomPlaylist(this->selected_playlist);

	InvalidateWindowData(WC_MUSIC_TRACK_SELECTION, 0);
}

/**
 * Remove all songs from the current custom playlist.