public void MatrixHistory_Matrix_EqualsToItself()
{
var matrix1 = new Matrix(new List <List <long> >
{
new List <long> {
0, 3, 0
},
new List <long> {
0, 2, 0
},
new List <long> {
0, 1, 0
}
});
var matrixCheck = new Matrix(new List <List <long> >
{
new List <long> {
0, 3, 0
},
new List <long> {
0, 2, 0
},
new List <long> {
0, 1, 0
}
});
var history = new MatrixHistory(matrix1);
history.Backup();
history.Matrix[0, 0] = 1;
history.Backup();
history.Matrix[0, 0] = 2;
history.Undo();
history.Undo();
Assert.AreEqual(history.Matrix, matrixCheck);
}
public bool Undo()
{
// Try to undo
bool success = history.Undo();
// If undo succeeds then update the matrix
if (success)
{
MatrixParent.CurrentMatrix = history.Current.Matrix;
MatrixParent.IncreaseMovesMade();
OnHistoryUpdate();
AttemptUndoPreview();
}
return(success);
}
/// <summary>
/// Undoes operations to last backup.
/// </summary>
public virtual void Undo()
{
_history.Undo();
}