private void radioButton_OnClick(object sender, RoutedEventArgs args) {
foreach (var child in XChildren) {
if (child is RadioButton && child != sender) {
((RadioButton) child).Checked = false;
}
}
((RadioButton) sender).Checked = true;
int index = Children.IndexOf((Control) sender);
SelectedItemIndex = index;
}
/// <summary>
/// Adds specified routed event to event queue. This event will be processed in next pass.
/// </summary>
internal void QueueEvent(RoutedEvent routedEvent, RoutedEventArgs args) {
if (routedEvent != args.RoutedEvent)
throw new ArgumentException("Routed event doesn't match to routedEvent passed.", "args");
this.eventsQueue.Enqueue(args);
}
private bool processRoutedEvent(RoutedEvent routedEvent, RoutedEventArgs args) {
//
List<RoutedEventTargetInfo> subscribedTargets = getTargetsSubscribedTo(routedEvent);
Control capturingControl = inputCaptureStack.Count != 0 ? inputCaptureStack.Peek() : null;
//
if (routedEvent.RoutingStrategy == RoutingStrategy.Direct) {
if (null == subscribedTargets)
return false;
//
RoutedEventTargetInfo targetInfo =
subscribedTargets.FirstOrDefault(info => info.target == args.Source);
if (null == targetInfo)
return false;
// если имеется контрол, захватывающий события, события получает только он сам
// и его дочерние контролы
if ( capturingControl != null ) {
if ( !(args.Source is Control) ) return false;
if ( !isControlAllowedToReceiveEvents( ( Control ) args.Source, capturingControl ) )
return false;
}
// copy handlersList to local list to avoid modifications when enumerating
foreach (DelegateInfo delegateInfo in new List< DelegateInfo >(targetInfo.handlersList)) {
if (!args.Handled || delegateInfo.handledEventsToo) {
if (delegateInfo.@delegate is RoutedEventHandler) {
((RoutedEventHandler) delegateInfo.@delegate).Invoke(targetInfo.target, args);
} else {
[email protected](targetInfo.target, args);
}
}
}
}
Control source = (Control) args.Source;
// path to source from root element down to Source
List<Control> path = new List<Control>();
Control current = source;
while (null != current) {
// та же логика с контролом, захватившим обработку сообщений
// если имеется контрол, захватывающий события, события получает только он сам
// и его дочерние контролы
if ( capturingControl == null || isControlAllowedToReceiveEvents( current, capturingControl ) ) {
path.Insert( 0, current );
current = current.Parent;
} else {
break;
}
}
if (routedEvent.RoutingStrategy == RoutingStrategy.Tunnel) {
if (subscribedTargets != null) {
foreach (Control potentialTarget in path) {
Control target = potentialTarget;
RoutedEventTargetInfo targetInfo =
subscribedTargets.FirstOrDefault(info => info.target == target);
if (null != targetInfo) {
foreach (DelegateInfo delegateInfo in new List< DelegateInfo >(targetInfo.handlersList)) {
if (!args.Handled || delegateInfo.handledEventsToo) {
if (delegateInfo.@delegate is RoutedEventHandler) {
((RoutedEventHandler) delegateInfo.@delegate).Invoke(target, args);
} else {
[email protected](target, args);
}
}
}
}
}
}
// для парных Preview-событий запускаем соответствующие настоящие события,
// сохраняя при этом Handled (если Preview событие помечено как Handled=true,
// то и настоящее событие будет маршрутизировано с Handled=true)
if (routedEvent == Control.PreviewMouseDownEvent) {
MouseButtonEventArgs mouseArgs = ( ( MouseButtonEventArgs ) args );
MouseButtonEventArgs argsNew = new MouseButtonEventArgs(
args.Source, Control.MouseDownEvent, mouseArgs.RawPosition,
mouseArgs.LeftButton, mouseArgs.MiddleButton, mouseArgs.RightButton,
mouseArgs.ChangedButton
);
argsNew.Handled = args.Handled;
eventsQueue.Enqueue(argsNew);
}
if (routedEvent == Control.PreviewMouseUpEvent) {
MouseButtonEventArgs mouseArgs = ( ( MouseButtonEventArgs ) args );
MouseButtonEventArgs argsNew = new MouseButtonEventArgs(
args.Source, Control.MouseUpEvent, mouseArgs.RawPosition,
mouseArgs.LeftButton, mouseArgs.MiddleButton, mouseArgs.RightButton,
mouseArgs.ChangedButton
);
argsNew.Handled = args.Handled;
eventsQueue.Enqueue(argsNew);
}
if (routedEvent == Control.PreviewMouseMoveEvent) {
MouseEventArgs mouseArgs = ( ( MouseEventArgs ) args );
MouseEventArgs argsNew = new MouseEventArgs(
args.Source, Control.MouseMoveEvent, mouseArgs.RawPosition,
mouseArgs.LeftButton, mouseArgs.MiddleButton, mouseArgs.RightButton
);
argsNew.Handled = args.Handled;
eventsQueue.Enqueue(argsNew);
}
if ( routedEvent == Control.PreviewMouseWheelEvent ) {
MouseWheelEventArgs oldArgs = ((MouseWheelEventArgs)args);
MouseEventArgs argsNew = new MouseWheelEventArgs(
args.Source, Control.MouseWheelEvent, oldArgs.RawPosition,
oldArgs.LeftButton, oldArgs.MiddleButton, oldArgs.RightButton,
oldArgs.Delta
);
argsNew.Handled = args.Handled;
eventsQueue.Enqueue(argsNew);
}
if (routedEvent == Control.PreviewKeyDownEvent) {
KeyEventArgs argsNew = new KeyEventArgs(args.Source, Control.KeyDownEvent);
KeyEventArgs keyEventArgs = ( ( KeyEventArgs ) args );
argsNew.UnicodeChar = keyEventArgs.UnicodeChar;
argsNew.bKeyDown = keyEventArgs.bKeyDown;
argsNew.dwControlKeyState = keyEventArgs.dwControlKeyState;
argsNew.wRepeatCount = keyEventArgs.wRepeatCount;
argsNew.wVirtualKeyCode = keyEventArgs.wVirtualKeyCode;
argsNew.wVirtualScanCode = keyEventArgs.wVirtualScanCode;
argsNew.Handled = args.Handled;
eventsQueue.Enqueue(argsNew);
}
if (routedEvent == Control.PreviewKeyUpEvent) {
KeyEventArgs argsNew = new KeyEventArgs(args.Source, Control.KeyUpEvent);
KeyEventArgs keyEventArgs = ( ( KeyEventArgs ) args );
argsNew.UnicodeChar = keyEventArgs.UnicodeChar;
argsNew.bKeyDown = keyEventArgs.bKeyDown;
argsNew.dwControlKeyState = keyEventArgs.dwControlKeyState;
argsNew.wRepeatCount = keyEventArgs.wRepeatCount;
argsNew.wVirtualKeyCode = keyEventArgs.wVirtualKeyCode;
argsNew.wVirtualScanCode = keyEventArgs.wVirtualScanCode;
argsNew.Handled = args.Handled;
eventsQueue.Enqueue(argsNew);
}
}
if (routedEvent.RoutingStrategy == RoutingStrategy.Bubble) {
if (subscribedTargets != null) {
for (int i = path.Count - 1; i >= 0; i--) {
Control target = path[i];
RoutedEventTargetInfo targetInfo =
subscribedTargets.FirstOrDefault(info => info.target == target);
if (null != targetInfo) {
//
foreach (DelegateInfo delegateInfo in new List< DelegateInfo >(targetInfo.handlersList)) {
if (!args.Handled || delegateInfo.handledEventsToo) {
if (delegateInfo.@delegate is RoutedEventHandler) {
((RoutedEventHandler) delegateInfo.@delegate).Invoke(target, args);
} else {
[email protected](target, args);
}
}
}
}
}
}
}
return args.Handled;
}
// todo : think about remove it
internal bool ProcessRoutedEvent(RoutedEvent routedEvent, RoutedEventArgs args) {
if (null == routedEvent)
throw new ArgumentNullException("routedEvent");
if (null == args)
throw new ArgumentNullException("args");
//
return processRoutedEvent(routedEvent, args);
}
private void CheckBox_OnClick( object sender, RoutedEventArgs routedEventArgs ) {
Checked = !Checked;
}
