/// <summary>
/// Clear the graph if not empty
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MenuReset_Click(object sender, RoutedEventArgs e)
{
if (!MainCanvas.IsEmpty())
{
MessageBoxResult result = MessageBox.Show("Would you like to save the current graph before openning a new one?", "Current graph is not saved!", MessageBoxButton.YesNoCancel, MessageBoxImage.Warning);
if (result == MessageBoxResult.Yes)
{
SaveToFile();
}
else if (result == MessageBoxResult.No)
{
MainCanvas.Children.Clear();
graph = new CanvasGraph();
}
else if (result == MessageBoxResult.Cancel)
{
// do nothing
}
}
else
{
MainCanvas.Children.Clear();
graph = new CanvasGraph();
}
}
/// <summary>
/// Terminate the application when main window is closed
/// </summary>
/// <param name="e"></param>
protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
{
if (!MainCanvas.IsEmpty())
{
MessageBoxResult result = MessageBox.Show("Are you sure you want to exit?", "Current graph will be lost if you haven't saved it yet.", MessageBoxButton.YesNoCancel, MessageBoxImage.Warning);
if (result == MessageBoxResult.Yes)
{
base.OnClosing(e);
Application.Current.Shutdown();
}
else
{
e.Cancel = true;
}// end else/if
}
}