/// <summary>
/// Open a window with the specific window info.
/// </summary>
/// <param name="openWindowInfo">The info of the window to be opened.</param>
public virtual void ShowWindow(OpenWindowInfo openWindowInfo)
{
if (openWindowInfo == null || openWindowInfo.WindowType == null)
{
throw new ArgumentNullException(nameof(openWindowInfo), "WindowType cannot be null");
}
Window window = null;
object windowObj = null;
try
{
windowObj = Activator.CreateInstance(openWindowInfo.WindowType);
window = windowObj as Window;
}
catch (Exception ex)
{
throw new InvalidOperationException("Cannot create a window with the given type", ex);
}
if (openWindowInfo.Parameter != null && window.DataContext != null &&
window.DataContext is ViewModelRootBase)
{
(window.DataContext as ViewModelRootBase).Data = openWindowInfo.Parameter;
}
if (openWindowInfo.IsModal)
{
// set the owner
window.Owner = AppWindow.GetCurrentActivatedWindow();
window.ShowDialog();
}
else
{
window.Show();
}
}
/// <summary>
/// Overrides Invoke method
/// </summary>
/// <param name="parameter"></param>
protected override void Invoke(object parameter)
{
if (ChenckingFuncBeforeOpenning != null && !ChenckingFuncBeforeOpenning())
{
return;
}
if (CommandBeforeOpen != null)
{
CommandBeforeOpen.Execute(null);
}
Window window = null;
object windowObj = null;
try
{
windowObj = Activator.CreateInstance(WindowType);
window = windowObj as Window;
}
catch (Exception ex)
{
throw new InvalidOperationException("Cannot create a window with the given type", ex);
}
var closeEventHanlder = new EventHandler((s, e) =>
{
// check if need to process the return value
object returnValue = window.TryGetReturnValue();
// first execute CommandAfterClose command, then invoke MethodAfterClose method (if they are set)
CommandAfterClose?.Execute(returnValue);
if (!string.IsNullOrWhiteSpace(MethodAfterClose))
{
MethodInfo method = null;
// if MethodOfTargetObject is not set, then the DataContext of AssociatedObject will be used as such a purpose
if (MethodOfTargetObject == null)
{
var dataContext = (AssociatedObject as FrameworkElement).DataContext;
if (dataContext != null)
{
method = dataContext.GetType().GetMethod(MethodAfterClose, BindingFlags.Public | BindingFlags.Instance);
method?.Invoke(dataContext, returnValue != null ? new object[] { returnValue } : null);
}
}
else
{
method = MethodOfTargetObject?.GetType().GetMethod(MethodAfterClose, BindingFlags.Public | BindingFlags.Instance);
method?.Invoke(MethodOfTargetObject, returnValue != null ? new object[] { returnValue } : null);
}
}
});
window.Closed -= closeEventHanlder;
window.Closed += closeEventHanlder;
if (window.DataContext != null && window.DataContext is ViewModelRootBase)
{
// set the data to viewmodel
(window.DataContext as ViewModelRootBase).Data = Parameter;
}
if (IsModal)
{
// set the owner
window.Owner = AppWindow.GetCurrentActivatedWindow();
window.ShowDialog();
}
else
{
window.Show();
}
}
private static void OnOpenWindowTypeChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
//// make it available for Button, Hyperlink, MenutItem
//dynamic control = null;
//switch (d.GetType().Name)
//{
// case nameof(Button):
// control = d as Button;
// break;
// case nameof(Hyperlink):
// control = d as Hyperlink;
// break;
// case nameof(MenuItem):
// control = d as MenuItem;
// break;
// default:
// return;
//}
// make it avaible for those controls which has Click event
var eventInfo = d.GetType().GetEvent("Click");
if (eventInfo == null)
{
throw new InvalidOperationException("The control attached does not have a event named Click");
}
var type = GetOpenWindowType(d);
if (type == null && type != typeof(Window))
{
return;
}
Window window = null;
var clickEventHandler = new RoutedEventHandler((s, arg) =>
{
if (window == null)
{
window = Activator.CreateInstance(type) as Window;
if (window == null)
{
throw new ArgumentException("cannot create a window by the target type");
}
}
if (GetParameter(d) != null)
{
if (window.DataContext != null && window.DataContext is ViewModelRootBase)
{
(window.DataContext as ViewModelRootBase).Data = GetParameter(d);
}
}
var isModel = GetIsModal(d);
window.Closed += (win, args) =>
{
// try to get the return value from the window's view model
var returnValueInfo = window.TryGetReturnValue();
var command = GetCommandAfterClose(d);
if (command != null)
{
command.Execute(returnValueInfo.HasValue ? returnValueInfo.Value : null);
}
// set the object to null after it is closed
window = null;
};
if (isModel)
{
// set the owner
window.Owner = AppWindow.GetCurrentActivatedWindow();
window.ShowDialog();
}
else
{
window.Show();
}
});
//control.Click -= clickEventHandler;
//control.Click += clickEventHandler;
eventInfo.RemoveEventHandler(d, clickEventHandler);
eventInfo.AddEventHandler(d, clickEventHandler);
}
private static void OnOpenWindowTypeChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
// make it available for Button, Hyperlink, MenutItem
dynamic control = null;
switch (d.GetType().Name)
{
case nameof(Button):
control = d as Button;
break;
case nameof(Hyperlink):
control = d as Hyperlink;
break;
case nameof(MenuItem):
control = d as MenuItem;
break;
default:
return;
}
var type = GetOpenWindowType(d);
if (type == null && type != typeof(Window))
{
return;
}
Window window = null;
var clickEventHandler = new RoutedEventHandler((s, arg) =>
{
if (window == null)
{
window = Activator.CreateInstance(type) as Window;
if (window == null)
{
throw new ArgumentException("cannot create a window by the target type");
}
}
if (GetParameter(d) != null)
{
if (window.DataContext != null && window.DataContext is ViewModelRootBase)
{
(window.DataContext as ViewModelRootBase).Data = GetParameter(d);
}
//else
//{
// window.Tag = GetParameter(d);
//}
}
var isModel = GetIsModal(d);
window.Closed += (win, closeArgs) =>
{
var command = GetCommandAfterClose(d);
if (command != null)
{
command.Execute(null);
}
// set the object to null after it is closed
window = null;
};
if (isModel)
{
// set the owner
window.Owner = AppWindow.GetCurrentActivatedWindow();
window.ShowDialog();
}
else
{
window.Show();
}
});
control.Click -= clickEventHandler;
control.Click += clickEventHandler;
}