private void MessageReceived(object sender, [NotNull] InteractionMessageRaisedEventArgs e)
{
if (e == null)
{
throw new ArgumentNullException(nameof(e));
}
var message = e.Message;
var cloneMessage = (InteractionMessage)message.Clone();
cloneMessage.Freeze();
var checkResult = false;
void CheckAction()
{
if (!IsEnable)
{
return;
}
if (InvokeActionsOnlyWhileAttatchedObjectLoaded && !_loaded)
{
return;
}
if (!(string.IsNullOrEmpty(MessageKey) || MessageKey == cloneMessage.MessageKey))
{
return;
}
checkResult = true;
}
DoActionOnDispatcher(CheckAction);
if (!checkResult)
{
return;
}
DoActionOnDispatcher(() => InvokeActions(cloneMessage));
var responsiveMessage = message as ResponsiveInteractionMessage;
object response;
if (responsiveMessage != null &&
(response = ((ResponsiveInteractionMessage)cloneMessage).Response) != null)
{
responsiveMessage.Response = response;
}
}
/// <summary>
/// Messenger の Raised イベント処理です。メッセージキーに応じた各処理をおこないます。
/// </summary>
/// <param name="window">Window</param>
/// <param name="sender">Messenger</param>
/// <param name="e">InteractionMessageRaisedEventArgs</param>
private static void Messenger_Raised(Window window, object sender, InteractionMessageRaisedEventArgs e)
{
// 既存の XxxTrigger や XxxAction にお任せ案 (View に書く版のクラスの再利用と処理のお任せ) は、難しいため諦めた。
//var mes = new InformationDialogInteractionMessageAction();
// 非同期で呼ばれた場合は、同期呼び出し（UI スレッド）に変えて実行する
if (!window.Dispatcher.CheckAccess())
{
var recall = new Action <Window, object, InteractionMessageRaisedEventArgs>((w, s, e2) => Messenger_Raised(w, s, e2));
window.Dispatcher.Invoke(recall, new object[] { window, sender, e });
return;
}
switch (e.Message.MessageKey)
{
case "ShowInformationMessage":
case "ShowWarningMessage":
case "ShowErrorMessage":
case "ShowInformationMessageAsync":
case "ShowWarningMessageAsync":
case "ShowErrorMessageAsync":
// 表示のみの MessageBox 系
var informationMessage = e.Message as InformationMessage;
if (informationMessage != null)
{
MessageBox.Show(
window,
informationMessage.Text,
informationMessage.Caption,
MessageBoxButton.OK,
informationMessage.Image
);
}
break;
case "ShowConfirmationOKCancelMessage":
case "ShowConfirmationYesNoMessage":
case "ShowConfirmationYesNoCancelMessage":
case "ShowConfirmationOKCancelMessageAsync":
case "ShowConfirmationYesNoMessageAsync":
case "ShowConfirmationYesNoCancelMessageAsync":
// 戻り値ありの MessageBox 系
var confirmMessage = e.Message as ConfirmationMessage;
if (confirmMessage != null)
{
var result = MessageBox.Show(
window,
confirmMessage.Text,
confirmMessage.Caption,
confirmMessage.Button,
confirmMessage.Image,
confirmMessage.DefaultResult
);
if (result == MessageBoxResult.Yes || result == MessageBoxResult.OK)
{
confirmMessage.Response = true;
}
else if (result == MessageBoxResult.Cancel)
{
confirmMessage.Response = null;
}
else
{
confirmMessage.Response = false;
}
}
break;
case "Close":
case "CloseAsync":
var closeMessage = e.Message as WindowActionMessage;
if (closeMessage != null && closeMessage.Action == WindowAction.Close)
{
window.Close();
}
break;
case "Maximize":
case "MaximizeAsync":
var maximizeMessage = e.Message as WindowActionMessage;
if (maximizeMessage != null && maximizeMessage.Action == WindowAction.Maximize)
{
window.WindowState = WindowState.Maximized;
}
break;
case "Minimize":
case "MinimizeAsync":
var minimizeMessage = e.Message as WindowActionMessage;
if (minimizeMessage != null && minimizeMessage.Action == WindowAction.Minimize)
{
window.WindowState = WindowState.Minimized;
}
break;
case "Active":
case "ActiveAsync":
var activeMessage = e.Message as WindowActionMessage;
if (activeMessage != null && activeMessage.Action == WindowAction.Active)
{
window.Activate();
}
break;
}
}