public static InjectedProperty Register(
string propertyName,
Type propertyType,
InjectedPropertyMetadata metadata
)
{
InjectedProperty property = null;
if (registeredProperties.TryGetValue(propertyName, out property))
{
// check type
if (propertyType != property.PropertyType)
{
throw new InvalidOperationException(string.Format("InjectedProperty \"{0}\" has already been registered as a different type \"{1}\"", propertyName, property.PropertyType.FullName));
}
}
else
{
property = new InjectedProperty
{
PropertyName = propertyName,
PropertyType = propertyType,
Metadata = metadata,
};
registeredProperties.Add(propertyName, property);
}
return property;
}
public void RemoveInjectedProperty(object owner, InjectedProperty property)
{
var store = this.GetInjectedPropertyies(owner);
if (store != null)
{
store.RemoveInjectedProperty(property);
}
}
public object GetInjectedProperty(object owner, InjectedProperty property)
{
var store = this.GetInjectedPropertyies(owner);
if (store != null)
{
return store.GetInjectedProperty(property);
}
return null;
}
public object GetInjectedProperty(InjectedProperty property)
{
if (property == null)
{
throw new ArgumentNullException("property");
}
object value = null;
if (this.injectedProperties.TryGetValue(property.PropertyName, out value))
{
return value;
}
return property.Metadata.DefaultValue;
}
public void SetInjectedProperty(InjectedProperty property, object value)
{
if (property == null)
{
throw new ArgumentNullException("property");
}
object oldValue = null;
this.injectedProperties.TryGetValue(property.PropertyName, out oldValue);
this.injectedProperties[property.PropertyName] = value;
if (oldValue != value && property.Metadata.ChangeCallback != null)
{
property.Metadata.ChangeCallback(this.owner, new InjectedPropertyChangedEventArgs(property, value, oldValue));
}
}
public void SetInjectedProperty(object owner, InjectedProperty property, object value)
{
var store = this.GetInjectedPropertyies(owner);
if (store == null && this.factory != null)
{
store = this.factory(owner);
if (store != null)
{
this.AddInjectionStore(owner, store);
}
}
if (store != null)
{
store.SetInjectedProperty(property, value);
}
}
public void RemoveInjectedProperty(InjectedProperty property)
{
if (property == null)
{
throw new ArgumentNullException("property");
}
object value = null;
if (this.injectedProperties.TryGetValue(property.PropertyName, out value))
{
var disposable = value as IDisposable;
if (disposable != null)
{
disposable.Dispose();
}
this.injectedProperties.Remove(property.PropertyName);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Mobile.Mvvm.DataBinding.InjectedPropertyChangedEventArgs"/> class.
/// </summary>
public InjectedPropertyChangedEventArgs(InjectedProperty property, object newValue, object oldValue)
{
this.Property = property;
this.NewValue = newValue;
this.OldValue = oldValue;
}
