/// <summary>
/// Defines the method that determines whether the command can execute in its current state.
/// </summary>
/// <param name="parameter">Data used by the command. If the command does not require data to be passed, this object can be set to null.</param>
/// <returns>
/// true if this command can be executed; otherwise, false.
/// </returns>
public bool CanExecute(object parameter)
{
WindowCanExecuteArgs args = new WindowCanExecuteArgs((parameter as Window) ?? Window, parameter);
if (args.Window != null)
{
CanExecuteHandler temp = OnCanExecute;
if (temp != null)
{
temp(this, args);
}
else
{
IfNoHandlerOnCanExecute(this, args);
}
}
return(args.CanExecute);
}
protected override void IfNoHandlerOnCanExecute(object window, WindowCanExecuteArgs e)
{
e.CanExecute = e.Window.IsLoaded;
}
/// <summary>
/// Defines the method that determines whether the command can execute in its current state.
/// </summary>
/// <param name="parameter">Data used by the command. If the command does not require data to be passed, this object can be set to null.</param>
/// <returns>
/// true if this command can be executed; otherwise, false.
/// </returns>
public bool CanExecute(object parameter)
{
WindowCanExecuteArgs args = new WindowCanExecuteArgs((parameter as Window) ?? Window, parameter);
if (args.Window != null)
{
CanExecuteHandler temp = OnCanExecute;
if (temp != null)
{
temp(this, args);
}
else
{
IfNoHandlerOnCanExecute(this, args);
}
}
return args.CanExecute;
}
/// <summary>Determines whether this instance can execute on specified Window /// (or the default Window, if you pass in null). /// </summary> /// <param name="source">The Window.</param> /// <returns> /// <c>true</c> if this instance can execute on the specified Window; otherwise, <c>false</c>. /// </returns> protected abstract void IfNoHandlerOnCanExecute(object source, WindowCanExecuteArgs e);
/// <summary>
/// Determines whether this instance can execute on specified Window
/// (or the default Window, if you pass in null).
/// </summary>
/// <param name="window">The Window.</param>
/// <param name="e">The event arguments</param>
protected override void IfNoHandlerOnCanExecute(object window, WindowCanExecuteArgs e)
{
e.CanExecute = e.Window.IsLoaded;
}
/// <summary>Determines whether this instance can execute on specified Window /// (or the default Window, if you pass in null). /// </summary> /// <param name="source">The Window.</param> /// <returns> /// <c>true</c> if this instance can execute on the specified Window; otherwise, <c>false</c>. /// </returns> protected abstract void IfNoHandlerOnCanExecute(object source, WindowCanExecuteArgs e);
