46 lines
1.5 KiB
JavaScript
46 lines
1.5 KiB
JavaScript
// This file provides the internal API for talking from inside of the sandbox iframe
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// The external API is in sframe-ctrl.js
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define([], function () {
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var iframe;
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var handlers = {};
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var queries = {};
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var module = { exports: {} };
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var mkTxid = function () {
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return Math.random().toString(16).replace('0.', '') + Math.random().toString(16).replace('0.', '');
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};
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module.exports.query = function (q, content, cb) {
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if (!iframe) { throw new Error('not yet initialized'); }
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var txid = mkTxid();
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var timeout = setTimeout(function () {
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delete queries[txid];
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cb("Timeout making query " + q);
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});
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queries[txid] = function (data, msg) {
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clearTimeout(timeout);
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delete queries[txid];
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cb(undefined, data.content, msg);
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};
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iframe.contentWindow.postMessage(JSON.stringify({
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txid: txid,
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content: content,
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q: q
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}), '*');
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};
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module.exports.registerHandler = function (queryType, handler) {
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if (typeof(handlers[queryType]) !== 'undefined') { throw new Error('already registered'); }
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handlers[queryType] = function (msg) {
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var data = JSON.parse(msg.data);
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handler(data.content, function (replyContent) {
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msg.source.postMessage(JSON.stringify({
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txid: data.txid,
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content: replyContent
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}), '*');
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}, msg);
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};
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};
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return module.exports;
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}); |