/*
 * Oak Video Editor - Non-Linear Video Editor
 * Copyright (C) 2025 Olive CE Team
 *
 * 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/>.
 */

#ifndef NODETREEVIEW_H
#define NODETREEVIEW_H

#include <QTreeWidget>

#include "node/node.h"

namespace olive
{

class NodeTreeView : public QTreeWidget {
	Q_OBJECT
public:
	NodeTreeView(QWidget *parent = nullptr);

	bool IsNodeEnabled(Node *n) const;

	bool IsInputEnabled(const NodeKeyframeTrackReference &ref) const;

	void SetCheckBoxesEnabled(bool e)
	{
		checkboxes_enabled_ = e;
	}

	void SetKeyframeTrackColor(const NodeKeyframeTrackReference &ref,
							   const QColor &color);

	void SetOnlyShowKeyframable(bool e)
	{
		only_show_keyframable_ = e;
	}

	void SetShowKeyframeTracksAsRows(bool e)
	{
		show_keyframe_tracks_as_rows_ = e;
	}

public slots:
	void SetNodes(const QVector<Node *> &nodes);

signals:
	void NodeEnableChanged(Node *n, bool e);

	void InputEnableChanged(const NodeKeyframeTrackReference &ref, bool e);

	void InputSelectionChanged(const NodeKeyframeTrackReference &ref);

	void InputDoubleClicked(const NodeKeyframeTrackReference &ref);

protected:
	virtual void changeEvent(QEvent *e) override;

	virtual void mouseDoubleClickEvent(QMouseEvent *e) override;

private:
	void Retranslate();

	NodeKeyframeTrackReference GetSelectedInput();

	QTreeWidgetItem *CreateItem(QTreeWidgetItem *parent,
								const NodeKeyframeTrackReference &ref);

	void CreateItemsForTracks(QTreeWidgetItem *parent, const NodeInput &input,
							  int track_count);

	static bool UseRGBAOverXYZW(const NodeKeyframeTrackReference &ref);

	enum ItemType { kItemTypeNode, kItemTypeInput };

	static const int kItemType = Qt::UserRole;
	static const int kItemInputReference = Qt::UserRole + 1;
	static const int kItemNodePointer = Qt::UserRole + 1;

	QVector<Node *> nodes_;

	QVector<Node *> disabled_nodes_;

	QVector<NodeKeyframeTrackReference> disabled_inputs_;

	QHash<NodeKeyframeTrackReference, QTreeWidgetItem *> item_map_;

	bool only_show_keyframable_;

	bool show_keyframe_tracks_as_rows_;

	QHash<NodeKeyframeTrackReference, QColor> keyframe_colors_;

	bool checkboxes_enabled_;

private slots:
	void ItemCheckStateChanged(QTreeWidgetItem *item, int column);

	void SelectionChanged();
};

}

#endif // NODETREEVIEW_H
