/*
	QGL SceneTree
	Ivan Pelipenko peri4ko@yandex.ru

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU Lesser 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 Lesser General Public License for more details.

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

#ifndef SCENE_TREE_H
#define SCENE_TREE_H

#include <QWidget>
#include <QIcon>
#include "glscene.h"

class QTreeWidgetItem;

namespace Ui {
	class SceneTree;
}

class SceneTree: public QWidget
{
	Q_OBJECT
public:
	SceneTree(QWidget * parent = 0);
	~SceneTree();

	void assignQGLView(QGLView * v);
	QList<QAction*> actionsAdd();
	QList<QAction*> actionsSelection();

private:
	void changeEvent(QEvent * e);
	void rememberExpanded(QTreeWidgetItem * ti);
	void restoreExpanded(QTreeWidgetItem * ti);
	void makeObjetTree(ObjectBase * o, QTreeWidgetItem * ti);
	ObjectBase * itemObject(QTreeWidgetItem * item) const;
	int itemType(QTreeWidgetItem * item) const;
	bool filterTree(QTreeWidgetItem * ti, const QString & filter, int types);
	void checkActions();

	Ui::SceneTree * ui;
	bool block_tree;
	int hidden_by_filter, obj_count;
	QIcon icon_empty, icon_geo, icon_camera, icon_light, icon_vis[2];
	QSet<ObjectBase*> expanded_;
	QList<QTreeWidgetItem*> geo_items, cam_items;
	QGLView * view;

private slots:
	void treeObjects_selectionCnahged();
	void on_treeObjects_itemChanged(QTreeWidgetItem * item, int column);
	void on_treeObjects_itemMoved  (QTreeWidgetItem * item, QTreeWidgetItem * new_parent);

	void on_actionAdd_node_triggered();
	void on_actionAdd_light_triggered();
	void on_actionAdd_camera_triggered();

	void on_actionFocus_triggered() {focusObjects();}
	void on_actionRemove_triggered() {removeObjects();}
	void on_actionClone_triggered();
	void on_actionGroup_triggered();
	void on_actionTransfer_transform_to_children_triggered();

	void on_actionActive_camera_triggered();
	void on_actionDefault_camera_triggered();

	void on_actionSelect_parent_triggered();
	void on_actionSelect_by_mesh_triggered();
	void on_actionSelect_by_material_triggered();

	void removeObjects();
	void focusObjects();
	void objectsTreeChanged();
	void selectionChanged();
	void materialsChanged();
	void cameraChanged();
	void filter();
	void __objectDeleted(ObjectBase * o);

public slots:

signals:

private:

};

#endif // SCENE_TREE_H