/// <summary>
/// Adds a new dual binding between the control and the specified source binding
/// </summary>
/// <param name="widgetPropertyName">Property on the control to update</param>
/// <param name="sourceBinding">Binding to get/set the value to from the control</param>
/// <param name="mode">Mode of the binding</param>
/// <returns>A new instance of the DualBinding class that is used to control the binding</returns>
public DualBinding <T> Bind <T>(string widgetPropertyName, DirectBinding <T> sourceBinding, DualBindingMode mode = DualBindingMode.TwoWay)
{
var binding = new DualBinding <T>(
sourceBinding,
new ControlBinding <Control, T>(this, new PropertyBinding <T>(widgetPropertyName)),
mode
);
Bindings.Add(binding);
return(binding);
}
/// <summary>
/// Adds a new dual binding between the control and the specified source binding
/// </summary>
/// <param name="bindable">Bindable object to add the binding to</param>
/// <param name="widgetPropertyName">Property on the control to update</param>
/// <param name="sourceBinding">Binding to get/set the value to from the control</param>
/// <param name="mode">Mode of the binding</param>
/// <returns>A new instance of the DualBinding class that is used to control the binding</returns>
public static DualBinding <T> Bind <T>(this IBindable bindable, string widgetPropertyName, DirectBinding <T> sourceBinding, DualBindingMode mode = DualBindingMode.TwoWay)
{
var binding = new DualBinding <T>(
sourceBinding,
new BindableBinding <IBindable, T>(bindable, Binding.Property <T>(widgetPropertyName)),
mode
);
bindable.Bindings.Add(binding);
return(binding);
}
/// <summary>
/// Adds a new dual binding between the control and the specified source binding
/// </summary>
/// <param name="widgetPropertyName">Property on the control to update</param>
/// <param name="sourceBinding">Binding to get/set the value to from the control</param>
/// <param name="mode">Mode of the binding</param>
/// <returns>A new instance of the DualBinding class that is used to control the binding</returns>
public DualBinding Bind(string widgetPropertyName, DirectBinding sourceBinding, DualBindingMode mode = DualBindingMode.TwoWay)
{
var binding = new DualBinding(
sourceBinding,
new ObjectBinding(this, widgetPropertyName),
mode
);
Bindings.Add(binding);
return(binding);
}
/// <summary>
/// Adds a new dual binding between the control and the specified object
/// </summary>
/// <param name="propertyName">Property on the control to update</param>
/// <param name="source">Object to bind to</param>
/// <param name="sourcePropertyName">Property on the source object to retrieve/set the value of</param>
/// <param name="mode">Mode of the binding</param>
/// <returns>A new instance of the DualBinding class that is used to control the binding</returns>
public DualBinding <T> Bind <T>(string propertyName, object source, string sourcePropertyName, DualBindingMode mode = DualBindingMode.TwoWay)
{
var binding = new DualBinding <T>(
source,
sourcePropertyName,
this,
propertyName,
mode
);
Bindings.Add(binding);
return(binding);
}
/// <summary>
/// Adds a new dual binding between the control and the specified object
/// </summary>
/// <param name="bindable">Bindable object to add the binding to</param>
/// <param name="propertyName">Property on the control to update</param>
/// <param name="source">Object to bind to</param>
/// <param name="sourcePropertyName">Property on the source object to retrieve/set the value of</param>
/// <param name="mode">Mode of the binding</param>
/// <returns>A new instance of the DualBinding class that is used to control the binding</returns>
public static DualBinding <T> Bind <T>(this IBindable bindable, string propertyName, object source, string sourcePropertyName, DualBindingMode mode = DualBindingMode.TwoWay)
{
var binding = new DualBinding <T>(
source,
sourcePropertyName,
bindable,
propertyName,
mode
);
bindable.Bindings.Add(binding);
return(binding);
}
/// <summary>
/// Binds to an object's <see cref="IBindable.DataContext"/> using the specified <paramref name="dataContextBinding"/>.
/// </summary>
/// <remarks>
/// This creates a <see cref="DualBinding{TValue}"/> between a binding to the specified <paramref name="dataContextBinding"/> and this binding.
/// Since the data context changes, the binding passed for the data context binding is an indirect binding, in that it is reused.
/// The binding is added to the <see cref="IBindable.Bindings"/> collection.
/// </remarks>
/// <returns>A new dual binding that binds the <paramref name="dataContextBinding"/> to this control binding.</returns>
/// <param name="dataContextBinding">Binding to get/set values from/to the control's data context.</param>
/// <param name="mode">Dual binding mode.</param>
/// <param name="defaultControlValue">Default control value.</param>
/// <param name="defaultContextValue">Default context value.</param>
public DualBinding <TValue> BindDataContext(IndirectBinding <TValue> dataContextBinding, DualBindingMode mode = DualBindingMode.TwoWay, TValue defaultControlValue = default(TValue), TValue defaultContextValue = default(TValue))
{
var control = DataItem;
if (control == null)
{
throw new InvalidOperationException("Binding must be attached to a control");
}
var contextBinding = new BindableBinding <IBindable, object>(control, Binding.Delegate((IBindable w) => w.DataContext, null, (w, h) => w.DataContextChanged += h, (w, h) => w.DataContextChanged -= h));
var valueBinding = new ObjectBinding <object, TValue>(control.DataContext, dataContextBinding)
{
GettingNullValue = defaultControlValue,
SettingNullValue = defaultContextValue,
DataItem = contextBinding.DataValue
};
DualBinding <TValue> binding = Bind(sourceBinding: valueBinding, mode: mode);
contextBinding.DataValueChanged += delegate
{
((ObjectBinding <object, TValue>)binding.Source).DataItem = contextBinding.DataValue;
};
control.Bindings.Add(contextBinding);
return(binding);
}
