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20 lines
729 B
JavaScript
20 lines
729 B
JavaScript
/**
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* Defines a property similarly to `Ember.computed.oneway`,
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* save that while a `oneway` loses its binding upon being set,
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* the `BoundOneWay` will continue to listen for upstream changes.
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*
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* This is an ideal tool for working with values inside of {{input}}
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* elements.
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* @param transform: a function to transform the **upstream** value.
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*/
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var BoundOneWay = function (upstream, transform) {
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if (typeof transform !== 'function') {
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//default to the identity function
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transform = function (value) { return value; };
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}
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return Ember.computed(upstream, function (key, value) {
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return arguments.length > 1 ? value : transform(this.get(upstream));
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});
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};
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export default BoundOneWay;
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