From 3ddd4b5ffa4ca2c002394af6a9f3615f6ea96f13 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Sun, 5 Aug 2012 14:44:09 +0000
Subject: Added revert button.

---
 src/solverwindow.cc | 11 +++++++++++
 src/solverwindow.h  |  4 ++++
 2 files changed, 15 insertions(+)

diff --git a/src/solverwindow.cc b/src/solverwindow.cc
index d799c56..1ace44f 100644
--- a/src/solverwindow.cc
+++ b/src/solverwindow.cc
@@ -29,6 +29,11 @@ SolverWindow::SolverWindow()
 	sidebarlayout->addWidget(savebutton);
 	connect(savebutton, SIGNAL(clicked()), this, SLOT(save()));
 	
+	// add revert button
+	QPushButton *revertbutton = new QPushButton(tr("Revert"));
+	sidebarlayout->addWidget(revertbutton);
+	connect(revertbutton, SIGNAL(clicked()), this, SLOT(revert()));
+	
 	// add step constraints button
 	QPushButton *stepconstraintsbutton = new QPushButton(tr("Constraints"));
 	sidebarlayout->addWidget(stepconstraintsbutton);
@@ -94,12 +99,18 @@ void SolverWindow::load()
 		}
 	}
 	solverwindow_sudokuwidget->set_values(sudoku);
+	solverwindow_revertstate.assign(sudoku);
 	
 	file.close();
 	
 	QApplication::restoreOverrideCursor();
 }
 
+void SolverWindow::revert()
+{
+	solverwindow_sudokuwidget->set_values(solverwindow_revertstate);
+}
+
 void SolverWindow::save()
 {
 	QString filename = QFileDialog::getSaveFileName(this, tr("Save as..."), HOMEDIR, "Sudoku (*.sudoku)");
diff --git a/src/solverwindow.h b/src/solverwindow.h
index 51908c9..2422e97 100644
--- a/src/solverwindow.h
+++ b/src/solverwindow.h
@@ -4,6 +4,8 @@
 
 #include <QWidget>
 
+#include "sudoku.h"
+
 class SudokuWidget;
 
 class SolverWindow : public QWidget
@@ -17,12 +19,14 @@ public slots:
 	
 	void load();
 	void save();
+	void revert();
 	void step_constraints();
 	void step_coverage();
 	void clear();
 	
 private:
 	SudokuWidget	*solverwindow_sudokuwidget;
+	Sudoku		solverwindow_revertstate;
 };
 
 #endif // __INCLUDED_SUDOKUSOLVER_SOLVERWINDOW__
\ No newline at end of file
-- 
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