Namespace
O.Transform
Holds a number of useful functions for transforming values, for use with O.Binding.
"use strict";
( function ( NS, undefined ) {
NS.Transform = {Function
O.Transform.toBoolean()
Converts the given value to a Boolean
Returns
Boolean The numerical value.
toBoolean: function ( value ) {
return !!value;
},Function
O.Transform.toString()
Converts the given value to a String
Returns
String The string value.
toString: function ( value ) {
return value != null ? value + '' : '';
},Function
O.Transform.toInt()
Converts the given value to an integer
Returns
Number The integral numerical value.
toInt: function ( value ) {
return parseInt( value, 10 ) || 0;
},Function
O.Transform.toFloat()
Converts the given value to a floating point Number.
Returns
Number The numerical value.
toFloat: function ( value ) {
return parseFloat( value );
},Function
O.Transform.invert()
Converts the given value to a Boolean then inverts it.
Returns
Boolean The inverse Boolean value.
invert: function ( value ) {
return !value;
},Function
O.Transform#defaultValue( value )
Returns a function which will transform undefined into the default
value, but will pass through any other value untouched.
Parameters
| value | * The default value to use. |
|---|
defaultValue: function ( value ) {
return function ( v ) {
return v !== undefined ? v : value;
};
},Function
O.Transform.undefinedToNull()
Converts an undefined value into null, passes others through unchanged.
Returns
* The value or null if the value is undefined.
undefinedToNull: function ( value ) {
return value === undefined ? null : value;
},Function
O.Transform.isEqualToValue()
Returns a function which will compare a given value to the value
Returns
Function A function which compares its first argument to the value given to this function, returning true if equal or false otherwise. Or, if the sync is in reverse, returns the given value if true or undefined if false.
isEqualToValue: function ( value ) {
return function ( syncValue, syncForward ) {
return syncForward ?
syncValue === value :
syncValue ? value : undefined;
};
}
};
}( O ) );