29 lines
1.1 KiB
JavaScript
29 lines
1.1 KiB
JavaScript
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define([
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'../ThirdParty/knockout'
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], function(
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knockout) {
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'use strict';
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/**
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* Subscribe to a Knockout observable ES5 property, and immediately fire
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* the callback with the current value of the property.
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*
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* @private
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*
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* @exports subscribeAndEvaluate
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*
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* @param {Object} owner The object containing the observable property.
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* @param {String} observablePropertyName The name of the observable property.
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* @param {Function} callback The callback function.
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* @param {Object} [target] The value of this in the callback function.
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* @param {String} [event='change'] The name of the event to receive notification for.
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* @returns The subscription object from Knockout which can be used to dispose the subscription later.
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*/
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function subscribeAndEvaluate(owner, observablePropertyName, callback, target, event) {
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callback.call(target, owner[observablePropertyName]);
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return knockout.getObservable(owner, observablePropertyName).subscribe(callback, target, event);
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}
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return subscribeAndEvaluate;
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});
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