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 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; }));
}
/// <summary>
/// A convenient method to create a new instance of the <see cref="BindableProperty" />
/// class that represents <see cref="Modifier" />.
/// </summary>
/// <remarks>
/// This sets <see cref="Modifier.Body" /> property and lets <see cref="Modifier" /> inherit <see cref="BindableObject.BindingContext" />.
/// Those states must be maintained by the caller.
/// </remarks>
/// <param name="property">
/// The name of the BindableProperty.
/// </param>
/// <param name="declarer">
/// The type of the declaring object.
/// </param>
/// <param name="defaultValueCreator">
/// A Func used to initialize default value for reference types.
/// </param>
protected static BindableProperty CreateBindableModifierProperty(string property, Type declarer, BindableProperty.CreateDefaultValueDelegate defaultValueCreator)
{
return(BindableProperty.Create(
property,
typeof(Modifier),
declarer,
null,
BindingMode.OneWay,
null,
s_onBindingModifierPropertyChanged,
null,
null,
defaultValueCreator));
}
/// <summary>
/// A convenient method to create a new instance of the <see cref="BindableProperty" />
/// class that represents a field or property of the <see cref="Body" />.
/// </summary>
/// <param name="property">
/// The name of the BindableProperty.
/// </param>
/// <param name="declarer">
/// The type of the declaring object.
/// </param>
/// <param name="update">
/// A method to update the component with the given value.
/// </param>
/// <param name="defaultValue">
/// The default value for the property.
/// </param>
/// <param name="defaultBindingMode">
/// The BindingMode to use on SetBinding() if no BindingMode is given. This parameter is optional. Default is BindingMode.OneWay.
/// </param>
/// <param name="defaultValueCreator">
/// A Func used to initialize default value for reference types.
/// </param>
protected static BindableProperty CreateBindableBodyProperty <U>(string property, Type declarer, Action <T, U> update, U defaultValue = default(U), BindingMode defaultBindingMode = BindingMode.OneWay, BindableProperty.CreateDefaultValueDelegate defaultValueCreator = null)
{
return(BindableProperty.Create(property, typeof(U), declarer, defaultValue, defaultBindingMode, propertyChanged: (bindable, oldValue, newValue) =>
{
var body = ((Component <T>)bindable).Body;
if (body != null)
{
Forms.mainThread.Send(state => update(body, (U)state), newValue);
}
}, defaultValueCreator: defaultValueCreator));
}