/// <summary>
/// Assigns a binding to a property.
/// </summary>
/// <param name="targetProperty">The BindableProperty on which to set a binding.</param>
/// <param name="binding">The binding to set.</param>
public void SetBinding(BindableProperty targetProperty, BindingBase binding)
{
SetBinding(targetProperty, binding, false);
}
static void BindingContextPropertyBindingChanging(BindableObject bindable, BindingBase oldBindingBase, BindingBase newBindingBase)
{
object context = bindable._inheritedContext;
var oldBinding = oldBindingBase as Binding;
var newBinding = newBindingBase as Binding;
if (context == null && oldBinding != null)
{
context = oldBinding.Context;
}
if (context != null && newBinding != null)
{
newBinding.Context = context;
}
}
void SetValueActual(BindableProperty property, BindablePropertyContext context, object value, bool currentlyApplying, bool forceSendChangeSignal, SetValueFlags attributes, bool silent = false)
{
object original = context.Value;
bool raiseOnEqual = (attributes & SetValueFlags.RaiseOnEqual) != 0;
bool clearDynamicResources = (attributes & SetValueFlags.ClearDynamicResource) != 0;
bool clearOneWayBindings = (attributes & SetValueFlags.ClearOneWayBindings) != 0;
bool clearTwoWayBindings = (attributes & SetValueFlags.ClearTwoWayBindings) != 0;
bool same = ReferenceEquals(context.Property, BindingContextProperty) ? ReferenceEquals(value, original) : Equals(value, original);
if (!silent && (!same || raiseOnEqual))
{
property.PropertyChanging?.Invoke(this, original, value);
OnPropertyChanging(property.PropertyName);
}
if (!same || raiseOnEqual)
{
context.Value = value;
}
context.Attributes &= ~BindableContextAttributes.IsDefaultValue;
context.Attributes &= ~BindableContextAttributes.IsDefaultValueCreated;
if ((context.Attributes & BindableContextAttributes.IsDynamicResource) != 0 && clearDynamicResources)
{
RemoveDynamicResource(property);
}
BindingBase binding = context.Binding;
if (binding != null)
{
if (clearOneWayBindings && binding.GetRealizedMode(property) == BindingMode.OneWay || clearTwoWayBindings && binding.GetRealizedMode(property) == BindingMode.TwoWay)
{
RemoveBinding(property, context);
binding = null;
}
}
if (!silent)
{
if ((!same || raiseOnEqual))
{
property.PropertyChanged?.Invoke(this, original, value);
if (binding != null && !currentlyApplying)
{
_applying = true;
binding.Apply(true);
_applying = false;
}
OnPropertyChanged(property.PropertyName);
}
else if (true == same && true == forceSendChangeSignal)
{
if (binding != null && !currentlyApplying)
{
_applying = true;
binding.Apply(true);
_applying = false;
}
OnPropertyChanged(property.PropertyName);
}
}
}
