/// <summary>
/// Open a new project
/// </summary>
private void OpenProject()
{
QuestionDialog dialog = new QuestionDialog("Are you sure to open another project?\nUnsaved progress could be LOST!!!");
dialog.ShowDialog();
CurrentStatus.Text = "Opening a data file...";
WinStatus.Background = Red;
try {
using (Stream s = FileManager.Open()) {
WinStatus.Background = Green;
CurrentStatus.Text = "Project opened";
if (s == null) // user cancel the operation
return;
ReloadProject(DataSerializer<Project>.Load(s));
}
}
catch (Exception e) {
CurrentStatus.Text = "Error!";
ReloadProject(null);
new ErrorHandler("Project cannot be opened!", e).Show();
}
}
/// <summary>
/// Close the diagram
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnRemoveDiagramButton(object sender, MouseButtonEventArgs e)
{
QuestionDialog dialog = new QuestionDialog("Are you sure to close this diagram?");
dialog.ShowDialog();
this.IsOpen = !dialog.Answer;
}
/// <summary>
/// Confirm before closing window
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private static void MainWindow_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
QuestionDialog dialog = new QuestionDialog("Are you sure to close this project?\nUnsaved offline project progress could be LOST!!!");
dialog.ShowDialog();
e.Cancel = !dialog.Answer;
}
/// <summary>
/// Get a handler thumb
/// </summary>
/// <returns></returns>
private Thumb GetMoveThumb()
{
Thumb thumb = new Thumb();
thumb.Style = FindResource("MoveThumbStyle") as Style;
// move operation
thumb.DragDelta += (s, e) => {
ModelItem elem = AdornedElement as ModelItem;
if (elem == null) return;
#if DEBUG_ON
System.Console.WriteLine("{0},Drag Test: elem.Positon {1}, Change {2},{3}", System.DateTime.Now.Millisecond, elem.Position, e.HorizontalChange, e.VerticalChange);
#endif
elem.Position += new Vector(e.HorizontalChange, e.VerticalChange);
};
// remove operation
thumb.MouseDoubleClick += (s, e) => {
ModelItem elem = AdornedElement as ModelItem;
if (elem == null) return;
// confirm
QuestionDialog dialog = new QuestionDialog("Are you sure to remove this model from current diagram?");
dialog.ShowDialog();
if (!dialog.Answer) return;
Diagram diagram = Project.Current.Children.FindByCanvas(elem.ContainerCanvas);
diagram.Children.Remove(elem.ContentObject);
};
return thumb;
}
