/***

  Olive - Non-Linear Video Editor
  Copyright (C) 2022 Olive Team
  Modifications Copyright (C) 2025 mikesolar

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.

***/

#include "timelinewidgetselections.h"

namespace olive
{

void TimelineWidgetSelections::shift_time(const Rational &diff)
{
	for (auto it = this->begin(); it != this->end(); it++) {
		it.value().shift(diff);
	}
}

void TimelineWidgetSelections::shift_tracks(TrackReference::Type type, int diff)
{
	TimelineWidgetSelections cached_selections;

	{
		// Take all selections of this track type
		auto it = this->begin();
		while (it != this->end()) {
			if (it.key().type() == type) {
				cached_selections.insert(it.key(), it.value());
				it = this->erase(it);
			} else {
				it++;
			}
		}
	}

	// Then re-insert them with the diff applied
	for (auto it = cached_selections.cbegin(); it != cached_selections.cend();
		 it++) {
		TrackReference ref(it.key().type(), it.key().index() + diff);

		this->insert(ref, it.value());
	}
}

void TimelineWidgetSelections::trim_in(const Rational &diff)
{
	for (auto it = this->begin(); it != this->end(); it++) {
		it.value().trim_in(diff);
	}
}

void TimelineWidgetSelections::trim_out(const Rational &diff)
{
	for (auto it = this->begin(); it != this->end(); it++) {
		it.value().trim_out(diff);
	}
}

void TimelineWidgetSelections::subtract(
	const TimelineWidgetSelections &selections)
{
	for (auto it = selections.cbegin(); it != selections.cend(); it++) {
		const TrackReference &track = it.key();
		const TimeRangeList &their_list = it.value();

		if (this->contains(track)) {
			TimeRangeList &our_list = (*this)[it.key()];
			our_list.remove(their_list);
		}
	}
}

}