private static void OnDisplayPropertyChanged(BindableObject bindable, object oldValue, object newValue)
{
BindablePicker picker = (BindablePicker)bindable;
picker.DisplayProperty = (string)newValue;
loadItemsAndSetSelected(bindable);
}
private static void OnItemsSourceChanged(BindableObject bindable, object oldValue, object newValue)
{
BindablePicker picker = (BindablePicker)bindable;
picker.ItemsSource = (IList)newValue;
loadItemsAndSetSelected(bindable);
}
private static void OnSelectedItemChanged(BindableObject bindable, object oldValue, object newValue)
{
BindablePicker picker = (BindablePicker)bindable;
picker.SelectedItem = newValue;
if (picker.ItemsSource != null && picker.SelectedItem != null)
{
int count = 0;
foreach (object obj in picker.ItemsSource)
{
if (obj == picker.SelectedItem)
{
picker.SelectedIndex = count;
break;
}
count++;
}
}
}
static void loadItemsAndSetSelected(BindableObject bindable)
{
BindablePicker picker = (BindablePicker)bindable;
if (picker.ItemsSource as IEnumerable != null)
{
picker.disableEvents = true;
picker.SelectedIndex = -1;
picker.Items.Clear();
int count = 0;
foreach (object obj in (IEnumerable)picker.ItemsSource)
{
string value = string.Empty;
if (picker.DisplayProperty != null)
{
var prop = obj.GetType().GetRuntimeProperties().FirstOrDefault(p => string.Equals(p.Name, picker.DisplayProperty, StringComparison.OrdinalIgnoreCase));
if (prop != null)
{
value = prop.GetValue(obj).ToString();
}
else
{
value = obj.ToString();
}
}
else
{
value = obj.ToString();
}
picker.Items.Add(value);
if (picker.SelectedItem != null)
{
if (picker.SelectedItem == obj)
{
picker.SelectedIndex = count;
}
}
count++;
}
picker.disableEvents = false;
}
}