/// <summary>
/// Close was requested by the child
/// </summary>
/// <param name="item">Item to close</param>
/// <param name="dialogResult">DialogResult to close with, if it's a dialog</param>
async void IChildDelegate.CloseItem(object item, bool?dialogResult)
{
if (item != this.viewModel)
{
logger.Warn("IChildDelegate.CloseItem called with item {0} which is _not_ our ViewModel {1}", item, this.viewModel);
return;
}
var guardClose = this.viewModel as IGuardClose;
if (guardClose != null && !await guardClose.CanCloseAsync())
{
logger.Info("Close of ViewModel {0} cancelled because CanCloseAsync returned false", this.viewModel);
return;
}
logger.Info("ViewModel {0} close requested with DialogResult {1} because it called RequestClose", this.viewModel, dialogResult);
this.window.StateChanged -= this.WindowStateChanged;
this.window.Closed -= this.WindowClosed;
this.window.Closing -= this.WindowClosing;
// Need to call this after unregistering the event handlers, as it causes the window
// to be closed
if (dialogResult != null)
{
this.window.DialogResult = dialogResult;
}
ScreenExtensions.TryClose(this.viewModel);
this.window.Close();
}
private void WindowClosed(object sender, EventArgs e)
{
// Logging was done in the Closing handler
this.window.StateChanged -= this.WindowStateChanged;
this.window.Closed -= this.WindowClosed;
this.window.Closing -= this.WindowClosing; // Not sure this is required
ScreenExtensions.TryClose(this.viewModel);
}
/// <summary>
/// Close an item, and clear its parent if it's set to the current parent
/// </summary>
/// <typeparam name="T">Type of conductor</typeparam>
/// <param name="parent">Parent</param>
/// <param name="item">Item to close and clean up</param>
/// <param name="dispose">True to dispose children as well as close them</param>
public static void CloseAndCleanUp <T>(this IConductor <T> parent, T item, bool dispose)
{
ScreenExtensions.TryClose(item);
var itemAsChild = item as IChild;
if (itemAsChild != null && itemAsChild.Parent == parent)
{
itemAsChild.Parent = null;
}
if (dispose)
{
ScreenExtensions.TryDispose(item);
}
}
