/// <summary>
/// Applies the specified windowStateEx to the window.
/// </summary>
/// <param name="windowStateEx">The WindowStateEx to apply.</param>
private void Apply(WindowStateEx windowStateEx)
{
// If it is already applied.
if (_appliedWindowStateEx == windowStateEx)
{
return;
}
// Whether the StateExChanged event is raised or not.
// If it is the initialization, it should not raise the StateExChanged event. (StateChanged is not raised too.)
bool isRequiredToRaiseStateExChanged = _appliedWindowStateEx != null;
// Sets the applied WindowStateEx.
WindowStateEx oldWindowStateEx = _appliedWindowStateEx ?? WindowStateEx.Normal;
_appliedWindowStateEx = windowStateEx;
// Sets the IsFullScreenMode to true if the WindowStateEx is FullScreen.
switch (windowStateEx)
{
case WindowStateEx.Normal:
case WindowStateEx.Maximized:
IsFullScreenMode = false;
break;
case WindowStateEx.FullScreen:
IsFullScreenMode = true;
break;
}
// Sets the WindowStateEx.
WindowStateEx = windowStateEx;
// Sets the WindowState.
WindowState = windowStateEx.ToWindowState();
// If it is Maximized -> Full Screen or Full Screen -> Maximized, hides and shows the window to corrent the size.
if ((oldWindowStateEx == WindowStateEx.Maximized && windowStateEx == WindowStateEx.FullScreen) ||
(oldWindowStateEx == WindowStateEx.FullScreen && windowStateEx == WindowStateEx.Maximized))
{
Visibility = Visibility.Collapsed;
Visibility = Visibility.Visible;
}
// Updates the WindowStateEx relate properties.
IsMinimized = WindowStateEx == WindowStateEx.Minimized;
IsNormal = WindowStateEx == WindowStateEx.Normal;
IsMaximized = WindowStateEx == WindowStateEx.Maximized;
IsFullScreen = WindowStateEx == WindowStateEx.FullScreen;
// If it is required to raise the StateExChanged event
if (isRequiredToRaiseStateExChanged)
{
// Raises the StateExChanged event.
OnStateExChanged(new CustomWindowStateExChangedEventArgs(oldWindowStateEx, windowStateEx));
// It is required to update UI that binds to CustomWindow's commands.
CommandManager.InvalidateRequerySuggested();
}
}
/// <summary>
/// Converts a WindowStateEx enumeration to a WindowState enumeration.
/// </summary>
/// <param name="windowStateEx">A WindowStateEx.</param>
/// <returns>The converted WindowState.</returns>
public static WindowState ToWindowState(this WindowStateEx windowStateEx)
{
switch (windowStateEx)
{
case WindowStateEx.Normal:
return(WindowState.Normal);
case WindowStateEx.Minimized:
return(WindowState.Minimized);
case WindowStateEx.Maximized:
case WindowStateEx.FullScreen:
return(WindowState.Maximized);
}
throw new InvalidOperationException(string.Format("The WindowStateEx {0} is unknown.", windowStateEx));
}
/// <summary>
/// Initializes a new instance of the StateExChangedEventArgs class.
/// </summary>
/// <param name="oldValue">The WindowStateEx before the change.</param>
/// <param name="newValue">The WindowStateEx after the change.</param>
internal CustomWindowStateExChangedEventArgs(WindowStateEx oldValue, WindowStateEx newValue)
{
OldValue = oldValue;
NewValue = newValue;
}
