private InstancedBinding Clone(InstancedBinding sourceInstance, IStyle style, IObservable <bool> activator)
{
InstancedBinding cloned;
if (activator != null)
{
var description = style?.ToString();
if (sourceInstance.Subject != null)
{
var activated = new ActivatedSubject(activator, sourceInstance.Subject, description);
cloned = new InstancedBinding(activated, sourceInstance.Mode, BindingPriority.StyleTrigger);
}
else if (sourceInstance.Observable != null)
{
var activated = new ActivatedObservable(activator, sourceInstance.Observable, description);
cloned = new InstancedBinding(activated, sourceInstance.Mode, BindingPriority.StyleTrigger);
}
else
{
var activated = new ActivatedValue(activator, sourceInstance.Value, description);
cloned = new InstancedBinding(activated, BindingMode.OneWay, BindingPriority.StyleTrigger);
}
}
else
{
if (sourceInstance.Subject != null)
{
cloned = new InstancedBinding(sourceInstance.Subject, sourceInstance.Mode, BindingPriority.Style);
}
else if (sourceInstance.Observable != null)
{
cloned = new InstancedBinding(sourceInstance.Observable, sourceInstance.Mode, BindingPriority.Style);
}
else
{
cloned = new InstancedBinding(sourceInstance.Value, BindingPriority.Style);
}
}
return(cloned);
}
/// <summary>
/// Applies the setter to the control.
/// </summary>
/// <param name="style">The style that is being applied.</param>
/// <param name="control">The control.</param>
/// <param name="activator">An optional activator.</param>
public void Apply(IStyle style, IStyleable control, IObservable <bool> activator)
{
Contract.Requires <ArgumentNullException>(control != null);
var description = style?.ToString();
if (Property == null)
{
throw new InvalidOperationException("Setter.Property must be set.");
}
var binding = Value as IBinding;
if (binding != null)
{
if (activator == null)
{
control.Bind(Property, binding);
}
else
{
var subject = binding.CreateSubject(control, Property);
var activated = new ActivatedSubject(activator, subject, description);
Bind(control, Property, binding, activated);
}
}
else
{
if (activator == null)
{
control.SetValue(Property, Value, BindingPriority.Style);
}
else
{
var activated = new ActivatedValue(activator, Value, description);
control.Bind(Property, activated, BindingPriority.StyleTrigger);
}
}
}
/// <summary>
/// Applies the setter to a control.
/// </summary>
/// <param name="style">The style that is being applied.</param>
/// <param name="control">The control.</param>
/// <param name="activator">An optional activator.</param>
public IDisposable Apply(IStyle style, IStyleable control, IObservable <bool> activator)
{
Contract.Requires <ArgumentNullException>(control != null);
var description = style?.ToString();
if (Property == null)
{
throw new InvalidOperationException("Setter.Property must be set.");
}
var binding = Value as IBinding;
if (binding == null)
{
if (activator == null)
{
return(control.Bind(Property, ObservableEx.SingleValue(Value), BindingPriority.Style));
}
else
{
var activated = new ActivatedValue(activator, Value, description);
return(control.Bind(Property, activated, BindingPriority.StyleTrigger));
}
}
else
{
var source = binding.Initiate(control, Property);
if (source != null)
{
var cloned = Clone(source, style, activator);
return(BindingOperations.Apply(control, Property, cloned, null));
}
}
return(Disposable.Empty);
}