/// <summary>
/// Gets the adorners used with this control during a hard selection (left-click).
/// Currently used to create an adorner that allows browsing to two channel paths
/// </summary>
/// <returns>An enumerable collection of hard select adorners.</returns>
public override IEnumerable <Adorner> GetHardSelectAdorners()
{
var adorners = new Collection <Adorner>();
var toolbar = new FloatingToolBar();
// if there is no model then don't return adorners
if (Model == null)
{
return(adorners);
}
// create a new instance of our adorner class and add it to the floating toolbar which is used as the container for the adorner
var control = new TwoChannelAdorner(DesignerNodeHelpers.GetVisualForViewModel(this));
toolbar.ToolBar = control;
adorners.Add(new ControlAdorner(DesignerNodeHelpers.GetVisualForViewModel(this), toolbar, Placement.BelowCenter));
return(adorners);
}
/// <summary>
/// Constructs a new instance of the TwoChannelAdorner class
/// </summary>
/// <param name="adornedElement">The visual element this adorner is attached to.</param>
public TwoChannelAdorner(PlatformVisual adornedElement)
{
InitializeComponent();
// set the data context for the control to itself. This lets us bind to the commands by name instead of having to use a more advanced binding
DataContext = this;
Model = DesignerNodeHelpers.GetModelForVisual(adornedElement) as VisualModel;
// set up the commands which are used by the adorner buttonsf
LoadFirstPopupCommand = new RelayCommand(ExecuteLoadFirstPopup);
LoadSecondPopupCommand = new RelayCommand(ExecuteLoadSecondPopup);
// Hook up event handlers. We set up event handlers for when keys are pressed on the adorner as well as when the properties change on either of the channel
// selection popups
WeakEventManager <UIElement, KeyEventArgs> .AddHandler(this, "KeyDown", HandleKeyDown);
WeakEventManager <UIElement, KeyEventArgs> .AddHandler(this, "KeyUp", HandleKeyUp);
WeakEventManager <ChannelPopup, PropertyChangedEventArgs> .AddHandler(FirstUiSdfPopup, "PropertyChanged", FirstChannelPropertyChanged);
WeakEventManager <ChannelPopup, PropertyChangedEventArgs> .AddHandler(SecondUiSdfPopup, "PropertyChanged", SecondChannelPropertyChanged);
// add this adorner as an observer of the model
Model.AddObserver(this);
FirstTextControl.Text = ((PulseWidthModulationControlModel)Model).FrequencyChannel;
SecondTextControl.Text = ((PulseWidthModulationControlModel)Model).DutyCycleChannel;
}
