private static DispatchItem CreateFromAdapterView()
{
// AdapterView is more complicated because there are two events - one for select and one for deselect
// respond to both
const string propName = "SelectedItem";
return(new DispatchItem
{
Type = typeof(AdapterView),
Property = propName,
Func = (x, ex) =>
{
var adapterView = (AdapterView)x;
var itemSelected = Observable.FromEvent <EventHandler <AdapterView.ItemSelectedEventArgs>, ObservedChange <object, object> >(
eventHandler =>
{
void Handler(object sender, AdapterView.ItemSelectedEventArgs e) => eventHandler(new ObservedChange <object, object>(adapterView, ex));
return Handler;
},
h => adapterView.ItemSelected += h,
h => adapterView.ItemSelected -= h);
var nothingSelected = Observable.FromEvent <EventHandler <AdapterView.NothingSelectedEventArgs>, ObservedChange <object, object> >(
eventHandler =>
{
void Handler(object sender, AdapterView.NothingSelectedEventArgs e) => eventHandler(new ObservedChange <object, object>(adapterView, ex));
return Handler;
},
h => adapterView.NothingSelected += h,
h => adapterView.NothingSelected -= h);
return Observable.Merge(itemSelected, nothingSelected);
}
});
private static DispatchTuple CreateFromAdapterView()
{
// AdapterView is more complicated because there are two events - one for select and one for deselect
// respond to both
const string propName = "SelectedItem";
return(new DispatchTuple
{
Type = typeof(AdapterView),
Property = propName,
Func = (x, ex) =>
{
var v = (AdapterView)x;
return Observable.Merge(
Observable.FromEventPattern <AdapterView.ItemSelectedEventArgs>(h => v.ItemSelected += h, h => v.ItemSelected -= h)
.Select(_ => new ObservedChange <object, object>(v, ex)),
Observable.FromEventPattern <AdapterView.NothingSelectedEventArgs>(h => v.NothingSelected += h, h => v.NothingSelected -= h)
.Select(_ => new ObservedChange <object, object>(v, ex)));
}
});
}