/*
	QGL PropertyEditor
	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 PROPERTYEDITOR_H
#define PROPERTYEDITOR_H

#include <QTreeWidget>
#include <QHeaderView>
#include <QMetaProperty>
#include <QEvent>
#include <QDebug>
#include <QStyledItemDelegate>
#include <qpiconfigwidget.h>


class Delegate: public QStyledItemDelegate {
	Q_OBJECT
public:
	Delegate(QObject * parent = 0): QStyledItemDelegate() {ab = QBrush(QImage(":/icons/alpha.png"));}
	
	QWidget * createEditor(QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index) const {cmi = const_cast<QModelIndex & >(index); return widgetForProperty(parent, index);}
	void setEditorData(QWidget * editor, const QModelIndex & index) const {setWidgetProperty(editor, index.data(Qt::UserRole));}
	void setModelData(QWidget * editor, QAbstractItemModel * model, const QModelIndex & index) const;
	void updateEditorGeometry(QWidget * editor, const QStyleOptionViewItem & option, const QModelIndex & index) const {editor->setGeometry(option.rect);}
	void paint(QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index) const;
	
private:
	QWidget * widgetForProperty(QWidget * parent, const QModelIndex & index) const;
	void setWidgetProperty(QWidget * w, const QVariant & value) const;
	const QVariant widgetProperty(QWidget * w) const;
	QString pointString(const QPoint & p) const {return QString::number(p.x()) + " x " + QString::number(p.y());}
	QString pointString(const QPointF & p) const {return QString::number(p.x()) + " x " + QString::number(p.y());}
	QString rectString(const QRect & r) const {return QString::number(r.x()) + " x " + QString::number(r.y()) + " : " +
													  QString::number(r.width()) + " x " + QString::number(r.height());}
	QString rectString(const QRectF & r) const {return QString::number(r.x()) + " x " + QString::number(r.y()) + " : " +
													   QString::number(r.width()) + " x " + QString::number(r.height());}
	
	QBrush ab;
	mutable QModelIndex cmi;
	
private slots:
	void changed() {setModelData((QWidget * )sender(), const_cast<QAbstractItemModel * >(cmi.model()), cmi);}
	void changedFlag();
	
};

typedef QPair<QMetaProperty, QVariant> PropertyValuePair;
Q_DECLARE_METATYPE (PropertyValuePair)
Q_DECLARE_METATYPE (QMetaProperty)

class PropertyEditor: public QTreeWidget {
	Q_OBJECT
public:
	explicit PropertyEditor(QWidget * parent = 0);
	virtual ~PropertyEditor();

	void assignObject(QObject * o) {object = o; rebuild();}

protected:
	void changeEvent(QEvent * e);

private:
	void configTree();
	void setItemBackColor(QTreeWidgetItem * i, const QColor & c) {i->setBackgroundColor(0, c); i->setBackgroundColor(1, c);}
	void setItemForeColor(QTreeWidgetItem * i, const QColor & c) {i->setForeground(0, c); i->setForeground(1, c);}
	void rebuild();
	void refresh();

	QObject * object;
	QFont font_b;
	QList<QMetaProperty> props;
	bool active_;

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

};

#endif // PROPERTYEDITOR_H