private static void UnRegister(View oldElement, AndroidViews.View nativeView)
{
nativeView.GenericMotion -= HandleGenericMotion;
nativeView.Touch -= HandleTouch;
listener = null;
detector = null;
}
private static void Register(View newElement, AndroidViews.View nativeView)
{
listener = new Android_GestureListener(newElement.GestureRecognizers.ToList());
detector = new AndroidViews.GestureDetector(listener);
nativeView.GenericMotion += HandleGenericMotion;
nativeView.Touch += HandleTouch;
}
public static MouseEventArgs ToEto(av.MotionEvent e)
{
if (e.Action == av.MotionEventActions.Down)
{
return new MouseEventArgs(MouseButtons.Primary, Keys.None, new PointF(e.GetX(), e.GetY()));
}
// Is this correct? It generates a mouse event for pointer-up and cancel actions
// See the iOS handler as well, which does something similar
return new MouseEventArgs(MouseButtons.Primary, Keys.None, Point.Empty);
}
public static void Handle(View newElement, View oldElement, AndroidViews.View nativeView)
{
if (newElement != null)
{
Register(newElement, nativeView);
}
else if (oldElement != null)
{
UnRegister(oldElement, nativeView);
}
}
/// <summary>
/// If the bindings for the page being loaded are not already cached, then
///
/// 1) store the page we are on.
/// 2) convert the xml UI into an element based object model representing the hierarchy and binding information of the UI.
/// 3) parse the page being loaded by calling the parser and telling it to start.
///
/// The parser will create the binding by calling the PageBindingFactory
/// </summary>
private void Load(and.View page)
{
_currentPage = page;
//1) get the node tree from the UI markup.
//ViewBindingParser.Parser();
//2) get the visitors to visit the node tree.
throw new System.NotImplementedException();
}
/// <summary>
/// Add a single binding for any page to the list of cached bindings.
/// </summary>
/// <param name="viewModel"></param>
/// <param name="elementId"></param>
/// <param name="property"></param>
/// <param name="bindingInfo"></param>
public void Add(and.View view , Binding binding, IElement element )
{
IList<Binding> bindings;
if(!_perPageBindings.TryGetValue(view, out bindings))
{
bindings = new List<Binding>();
_perPageBindings[view] = bindings;
}
bindings.Add(binding);
binding.Target = _viewModel;
binding.Source = view;
var expression = _bindingFactory.Create((ViewModel) binding.Target,
binding.SourcePath,
binding.TargetPath,
binding);
expression.Element = element;
_bindingsForCurrentPage.Add(expression);
}
/// <summary>
/// The page that we want to create instances for.
///
/// 1) freeze or GC old binding instances for the current and soon to be previous page.
/// 2) generate and cache all of our new bindings
/// </summary>
/// <param name="page"></param>
public void CreateInstancesForPage(and.View page)
{
ClearCurrentBindings();
foreach (var binding in _perPageBindings[page])
{
//Add(page, binding);
}
}
private static Keys Find(av.Keycode key)
{
Keys mapped;
if (keymap.TryGetValue(key, out mapped)) return mapped;
else return Keys.None;
}
private static void HandleGenericMotion(object sender, AndroidViews.View.GenericMotionEventArgs e)
{
detector.OnTouchEvent(e.Event);
}
private static void HandleTouch(object sender, AndroidViews.View.TouchEventArgs e)
{
detector.OnTouchEvent(e.Event);
}