public static BindableProperty Create <TDeclarer, TPropertyType>(string propertyName,
TPropertyType defaultValue,
BindingMode defaultBindingMode = BindingMode.OneWay,
BindableProperty.ValidateValueDelegate <TPropertyType> validateValue = null,
BindableProperty.BindingPropertyChangedDelegate <TPropertyType> propertyChanged = null,
BindableProperty.BindingPropertyChangingDelegate <TPropertyType> propertyChanging = null,
BindableProperty.CoerceValueDelegate <TPropertyType> coerceValue = null,
BindableProperty.CreateDefaultValueDelegate <TDeclarer, TPropertyType> defaultValueCreator = null) where TDeclarer : BindableObject
{
BindableProperty.CreateDefaultValueDelegate dvc = null;
if (defaultValueCreator != null)
{
dvc = (bindable) => defaultValueCreator((TDeclarer)bindable);
}
return(BindableProperty.Create(propertyName, typeof(TPropertyType), typeof(TDeclarer), defaultValue, defaultBindingMode,
validateValue: (bindable, value) => { return validateValue != null ? validateValue(bindable, (TPropertyType)value) : true; },
propertyChanged: (bindable, oldValue, newValue) => { if (propertyChanged != null)
{
propertyChanged(bindable, (TPropertyType)oldValue, (TPropertyType)newValue);
}
},
propertyChanging: (bindable, oldValue, newValue) => { if (propertyChanging != null)
{
propertyChanging(bindable, (TPropertyType)oldValue, (TPropertyType)newValue);
}
},
coerceValue: (bindable, value) => { return coerceValue != null ? coerceValue(bindable, (TPropertyType)value) : value; },
defaultValueCreator: dvc));
}
public static BindableProperty Create <TDeclarer, TPropertyType>(Expression <Func <TDeclarer, TPropertyType> > getter,
TPropertyType defaultValue,
BindingMode defaultBindingMode = BindingMode.OneWay,
BindableProperty.ValidateValueDelegate <TPropertyType> validateValue = null,
BindableProperty.BindingPropertyChangedDelegate <TPropertyType> propertyChanged = null,
BindableProperty.BindingPropertyChangingDelegate <TPropertyType> propertyChanging = null,
BindableProperty.CoerceValueDelegate <TPropertyType> coerceValue = null,
BindableProperty.CreateDefaultValueDelegate <TDeclarer, TPropertyType> defaultValueCreator = null) where TDeclarer : BindableObject
{
return(Create <TDeclarer, TPropertyType>(GetPropertyPath(getter), defaultValue, defaultBindingMode, validateValue, propertyChanged, propertyChanging, coerceValue, defaultValueCreator));
}
public void CreateForGeneric()
{
const BindingMode mode = BindingMode.OneWayToSource;
const string dvalue = "default";
BindableProperty.CoerceValueDelegate coerce = (bindable, value) => value;
BindableProperty.ValidateValueDelegate validate = (b, v) => true;
BindableProperty.BindingPropertyChangedDelegate changed = (b, ov, nv) => { };
BindableProperty.BindingPropertyChangingDelegate changing = (b, ov, nv) => { };
var prop = BindableProperty.Create("Text", typeof(string), typeof(GenericView <>), dvalue, mode, validate, changed, changing, coerce);
Assert.AreEqual("Text", prop.PropertyName);
Assert.AreEqual(typeof(GenericView <>), prop.DeclaringType);
Assert.AreEqual(typeof(string), prop.ReturnType);
Assert.AreEqual(dvalue, prop.DefaultValue);
Assert.AreEqual(mode, prop.DefaultBindingMode);
}
public static BindableProperty Create <TDeclarer, TPropertyType>(Expression <Func <TDeclarer, TPropertyType> > getter,
TPropertyType defaultValue,
BindingMode defaultBindingMode = BindingMode.OneWay,
BindableProperty.ValidateValueDelegate <TPropertyType> validateValue = null,
BindableProperty.BindingPropertyChangedDelegate <TPropertyType> propertyChanged = null,
BindableProperty.BindingPropertyChangingDelegate <TPropertyType> propertyChanging = null,
BindableProperty.CoerceValueDelegate <TPropertyType> coerceValue = null,
BindableProperty.CreateDefaultValueDelegate <TDeclarer, TPropertyType> defaultValueCreator = null) where TDeclarer : BindableObject
{
return(BindableProperty.Create(ExpressionExtension.GetPropertyPath(getter), typeof(TPropertyType), typeof(TDeclarer), defaultValue, defaultBindingMode,
validateValue: (bindable, value) => { return validateValue != null ? validateValue(bindable, (TPropertyType)value) : true; },
propertyChanged: (bindable, oldValue, newValue) => { if (propertyChanged != null)
{
propertyChanged(bindable, (TPropertyType)oldValue, (TPropertyType)newValue);
}
},
propertyChanging: (bindable, oldValue, newValue) => { if (propertyChanging != null)
{
propertyChanging(bindable, (TPropertyType)oldValue, (TPropertyType)newValue);
}
},
coerceValue: (bindable, value) => { return coerceValue != null ? coerceValue(bindable, (TPropertyType)value) : value; },
defaultValueCreator: (bindable) => { return defaultValueCreator != null ? defaultValueCreator((TDeclarer)bindable) : defaultValue; }));
}
