/*
	File                 : FunctionValuesDialog.h
	Project              : LabPlot
	Description          : Dialog for generating values from a mathematical function
	--------------------------------------------------------------------
	SPDX-FileCopyrightText: 2014-2015 Alexander Semke <alexander.semke@web.de>
	SPDX-License-Identifier: GPL-2.0-or-later
*/

#ifndef FUNCTIONVALUESDIALOG_H
#define FUNCTIONVALUESDIALOG_H

#include "ui_functionvalueswidget.h"
#include <QDialog>

class Column;
class Spreadsheet;
class TreeViewComboBox;
class AspectTreeModel;
class QPushButton;
class QLineEdit;

class FunctionValuesDialog : public QDialog {
	Q_OBJECT

public:
	explicit FunctionValuesDialog(Spreadsheet*, QWidget* parent = nullptr);
	~FunctionValuesDialog() override;
	void setColumns(const QVector<Column*>&);
	bool validVariableName(QLineEdit*); // check if variable is already defined as constant or function

private:
	Ui::FunctionValuesWidget ui;
	QVector<Column*> m_columns; // columns to fill with values
	Spreadsheet* m_spreadsheet; // current spreadsheet
#if __cplusplus < 201103L
	std::auto_ptr<AspectTreeModel> m_aspectTreeModel;
#else
	std::unique_ptr<AspectTreeModel> m_aspectTreeModel;
#endif

	// variable widgets
	QList<QLineEdit*> m_variableLineEdits;
	QList<QLabel*> m_variableLabels; // '=' labels
	QList<TreeViewComboBox*> m_variableDataColumns;
	QList<QToolButton*> m_variableDeleteButtons;

	QPushButton* m_okButton;

private Q_SLOTS:
	void generate(); // calculate and set values from function
	void checkValues(); // check user input and enable/diable Ok-button accordingly
	void showConstants(); // select predefined constant
	void showFunctions(); // select predefined function
	void insertFunction(const QString&) const;
	void insertConstant(const QString&) const;
	void addVariable();
	void deleteVariable();
	void variableNameChanged();
	void variableColumnChanged(const QModelIndex&); // called when a new column is selected
};

#endif
