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| 1 | +// Provides support for asynchronous validation (fetching schemas) using jQuery |
| 2 | +// Callback is optional third argument to tv4.validate() - if not present, synchronous operation |
| 3 | +// callback(result, error); |
| 4 | +if (typeof (tv4.asyncValidate) === 'undefined') { |
| 5 | + tv4.syncValidate = tv4.validate; |
| 6 | + tv4.validate = function (data, schema, callback, checkRecursive, banUnknownProperties) { |
| 7 | + if (typeof (callback) === 'undefined') { |
| 8 | + return this.syncValidate(data, schema, checkRecursive, banUnknownProperties); |
| 9 | + } else { |
| 10 | + return this.asyncValidate(data, schema, callback, checkRecursive, banUnknownProperties); |
| 11 | + } |
| 12 | + }; |
| 13 | + tv4.asyncValidate = function (data, schema, callback, checkRecursive, banUnknownProperties) { |
| 14 | + var $ = jQuery; |
| 15 | + var result = tv4.validate(data, schema, checkRecursive, banUnknownProperties); |
| 16 | + if (!tv4.missing.length) { |
| 17 | + callback(result, tv4.error); |
| 18 | + } else { |
| 19 | + // Make a request for each missing schema |
| 20 | + var missingSchemas = $.map(tv4.missing, function (schemaUri) { |
| 21 | + return $.getJSON(schemaUri).success(function (fetchedSchema) { |
| 22 | + tv4.addSchema(schemaUri, fetchedSchema); |
| 23 | + }).error(function () { |
| 24 | + // If there's an error, just use an empty schema |
| 25 | + tv4.addSchema(schemaUri, {}); |
| 26 | + }); |
| 27 | + }); |
| 28 | + // When all requests done, try again |
| 29 | + $.when.apply($, missingSchemas).done(function () { |
| 30 | + var result = tv4.asyncValidate(data, schema, callback, checkRecursive, banUnknownProperties); |
| 31 | + }); |
| 32 | + } |
| 33 | + }; |
| 34 | +} |
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