/// <summary>
/// This method is needed to find the correct item in <paramref name="view"/> that corresponds
/// to the original input source <paramref name="item"/>. It is called by
/// <see cref="InstallInView"/> to correctly determine the new event inputs for the copied
/// condition.
/// </summary>
/// <remarks>This implementation just queries <see cref="IModelView.GetViewItem"/> for
/// <paramref name="item"/>, and returns the result from this call, or <see langword="null"/>
/// if <paramref name="item"/> does not implement <see cref="IOptionItem"/>.</remarks>
/// <param name="view">The view where the condition is currently installed</param>
/// <param name="item"></param>
/// <returns>A <see cref="INotifyPropertyChanged"/> instance that corresponds
/// to <paramref name="item"/> in <paramref name="view"/>.</returns>
protected virtual INotifyPropertyChanged GetItemCopy(IModelView view, INotifyPropertyChanged item)
{
IOptionItem viewItem = item as IOptionItem;
if (viewItem != null)
{
return(view.GetViewItem(viewItem));
}
return(null);
}
public IAction InstallInView(IModelView view)
{
IAction retval = null;
IOptionItem viewItem = view.GetViewItem(target);
if (viewItem != null)
{
retval = new SetEnabledAction(viewItem, invert);
}
return(retval);
}
/// <summary>
/// Called when the <see cref="View">view</see> changed.
/// </summary>
/// <param name="oldView">The old view.</param>
/// <param name="newView">The new view.</param>
protected virtual void OnViewChanged(IModelView oldView, IModelView newView)
{
if (view != null)
{
SetValue(RootItemProperty, null);
}
this.view = newView;
if (this.view != null)
{
view.IsAutoAdopt = IsAutoAdopt;
view.IsAutoCommit = IsAutoCommit;
IOptionGroup item = view.GetViewItem(view.Handler) as IOptionGroup;
SetValue(RootItemProperty, item);
}
else
{
SetValue(RootItemProperty, null);
}
}
