/// <summary>
/// Displays the <see cref="ContextMenu"/> if
/// it was set.
/// </summary>
private void ShowContextMenu(Point cursorPosition)
{
if (IsDisposed) return;
//raise preview event no matter whether context menu is currently set
//or not (enables client to set it on demand)
var args = RaisePreviewTrayContextMenuOpenEvent();
if (args.Handled) return;
if (ContextMenu != null)
{
//use absolute position
ContextMenu.Placement = PlacementMode.AbsolutePoint;
ContextMenu.HorizontalOffset = cursorPosition.X;
ContextMenu.VerticalOffset = cursorPosition.Y;
ContextMenu.IsOpen = true;
//activate the message window to track deactivation - otherwise, the context menu
//does not close if the user clicks somewhere else
WinApi.SetForegroundWindow(messageSink.MessageWindowHandle);
//bubble event
RaiseTrayContextMenuOpenEvent();
}
}
/// <summary>
/// Displays the <see cref="TrayPopup"/> control if
/// it was set.
/// </summary>
private void ShowTrayPopup(Point cursorPosition)
{
if (IsDisposed) return;
//raise preview event no matter whether popup is currently set
//or not (enables client to set it on demand)
var args = RaisePreviewTrayPopupOpenEvent();
if (args.Handled) return;
if (TrayPopup != null)
{
//use absolute position, but place the popup centered above the icon
TrayPopupResolved.Placement = PlacementMode.AbsolutePoint;
TrayPopupResolved.HorizontalOffset = cursorPosition.X;
TrayPopupResolved.VerticalOffset = cursorPosition.Y;
//open popup
TrayPopupResolved.IsOpen = true;
IntPtr handle = IntPtr.Zero;
if (TrayPopupResolved.Child != null)
{
//try to get a handle on the popup itself (via its child)
HwndSource source = (HwndSource)PresentationSource.FromVisual(TrayPopupResolved.Child);
if (source != null) handle = source.Handle;
}
//if we don't have a handle for the popup, fall back to the message sink
if (handle == IntPtr.Zero) handle = messageSink.MessageWindowHandle;
//activate either popup or message sink to track deactivation.
//otherwise, the popup does not close if the user clicks somewhere else
WinApi.SetForegroundWindow(handle);
//raise attached event - item should never be null unless developers
//changed the CustomPopup directly...
if (TrayPopup != null) RaisePopupOpenedEvent(TrayPopup);
//bubble routed event
RaiseTrayPopupOpenEvent();
}
}
/// <summary>
/// Processes mouse events, which are bubbled
/// through the class' routed events, trigger
/// certain actions (e.g. show a popup), or
/// both.
/// </summary>
/// <param name="me">Event flag.</param>
private void OnMouseEvent(MouseEvent me)
{
if (IsDisposed) return;
switch (me)
{
case MouseEvent.MouseMove:
RaiseTrayMouseMoveEvent();
//immediately return - there's nothing left to evaluate
return;
case MouseEvent.IconRightMouseDown:
RaiseTrayRightMouseDownEvent();
break;
case MouseEvent.IconLeftMouseDown:
RaiseTrayLeftMouseDownEvent();
break;
case MouseEvent.IconRightMouseUp:
RaiseTrayRightMouseUpEvent();
break;
case MouseEvent.IconLeftMouseUp:
RaiseTrayLeftMouseUpEvent();
break;
case MouseEvent.IconMiddleMouseDown:
RaiseTrayMiddleMouseDownEvent();
break;
case MouseEvent.IconMiddleMouseUp:
RaiseTrayMiddleMouseUpEvent();
break;
case MouseEvent.IconDoubleClick:
//cancel single click timer
singleClickTimer.Change(Timeout.Infinite, Timeout.Infinite);
//bubble event
RaiseTrayMouseDoubleClickEvent();
break;
case MouseEvent.BalloonToolTipClicked:
RaiseTrayBalloonTipClickedEvent();
break;
default:
throw new ArgumentOutOfRangeException("me", "Missing handler for mouse event flag: " + me);
}
//get mouse coordinates
Point cursorPosition = new Point();
WinApi.GetCursorPos(ref cursorPosition);
bool isLeftClickCommandInvoked = false;
//show popup, if requested
if (me.IsMatch(PopupActivation))
{
if (me == MouseEvent.IconLeftMouseUp)
{
//show popup once we are sure it's not a double click
delayedTimerAction = () =>
{
LeftClickCommand.ExecuteIfEnabled(LeftClickCommandParameter, LeftClickCommandTarget ?? this);
ShowTrayPopup(cursorPosition);
};
singleClickTimer.Change(WinApi.GetDoubleClickTime(), Timeout.Infinite);
isLeftClickCommandInvoked = true;
}
else
{
//show popup immediately
ShowTrayPopup(cursorPosition);
}
}
//show context menu, if requested
if (me.IsMatch(MenuActivation))
{
if (me == MouseEvent.IconLeftMouseUp)
{
//show context menu once we are sure it's not a double click
delayedTimerAction = () =>
{
LeftClickCommand.ExecuteIfEnabled(LeftClickCommandParameter, LeftClickCommandTarget ?? this);
ShowContextMenu(cursorPosition);
};
singleClickTimer.Change(WinApi.GetDoubleClickTime(), Timeout.Infinite);
isLeftClickCommandInvoked = true;
}
else
{
//show context menu immediately
ShowContextMenu(cursorPosition);
}
}
//make sure the left click command is invoked on mouse clicks
if (me == MouseEvent.IconLeftMouseUp && !isLeftClickCommandInvoked)
{
//show context menu once we are sure it's not a double click
delayedTimerAction = () => LeftClickCommand.ExecuteIfEnabled(LeftClickCommandParameter, LeftClickCommandTarget ?? this);
singleClickTimer.Change(WinApi.GetDoubleClickTime(), Timeout.Infinite);
}
}
