71 lines
1.4 KiB
JavaScript
71 lines
1.4 KiB
JavaScript
var App = App || {};
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App.Promise = function(_, jQuery, progress) {
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var active = [];
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var promiseId = 0;
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function make(callback) {
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var deferred = jQuery.Deferred();
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var promise = deferred.promise();
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promise.promiseId = ++ promiseId;
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progress.start();
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callback(function() {
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try {
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deferred.resolve.apply(deferred, arguments);
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active = _.without(active, promise.promiseId);
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progress.done();
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} catch (e) {
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progress.reset();
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}
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}, function() {
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try {
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deferred.reject.apply(deferred, arguments);
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active = _.without(active, promise.promiseId);
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progress.done();
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} catch (e) {
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progress.reset();
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}
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});
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active.push(promise.promiseId);
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promise.always(function() {
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if (!_.contains(active, promise.promiseId)) {
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throw new Error('Broken promise (promise ID: ' + promise.promiseId + ')');
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}
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});
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return promise;
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}
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function wait() {
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var promises = arguments;
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var deferred = jQuery.Deferred();
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return jQuery.when.apply(jQuery, promises)
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.then(function() {
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return deferred.resolve.apply(deferred, arguments);
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}).fail(function() {
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return deferred.reject.apply(deferred, arguments);
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});
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}
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function abortAll() {
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active = [];
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}
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function getActive() {
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return active.length;
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}
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return {
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make: make,
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wait: wait,
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getActive: getActive,
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abortAll: abortAll,
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};
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};
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App.DI.registerSingleton('promise', ['_', 'jQuery', 'progress'], App.Promise);
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