postmate.min.js

/**
 * postmate - A powerful, simple, promise-based postMessage library
 * @version v1.0.2
 * @link https://github.com/dollarshaveclub/postmate
 * @author Jacob Kelley <jakie8@gmail.com>
 * @license MIT */
!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):e.Postmate=t()}(this,function(){"use strict";function e(){var e;l.debug&&(e=console).log.apply(e,arguments)}function t(e){var t=document.createElement("a");return t.href=e,t.origin}function n(e,t){return e.origin===t&&("object"===a(e.data)&&("postmate"in e.data&&e.data.type===o))}function i(e,t){var n="function"==typeof e[t]?e[t]():e[t];return l.Promise.resolve(n)}var a="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol?"symbol":typeof e},r=function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")},s=function(){function e(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,n,i){return n&&e(t.prototype,n),i&&e(t,i),t}}(),o="application/x-postmate-v1+json",d=function(){function t(n){var i=this;r(this,t),this.parent=n.parent,this.frame=n.frame,this.child=n.child,this.childOrigin=n.childOrigin,this.events={},e("Parent: Registering API"),e("Parent: Awaiting messages..."),this.listener=function(t){var n=((t||{}).data||{}).value||{},a=n.data,r=n.name;"emit"===t.data.postmate&&(e("Parent: Received event emission: "+r),r in i.events&&i.events[r].call(i,a))},this.parent.addEventListener("message",this.listener,!1),e("Parent: Awaiting event emissions from Child")}return s(t,[{key:"get",value:function(e){var t=this;return new l.Promise(function(n){var i=(new Date).getTime(),a=function e(a){a.data.uid===i&&"reply"===a.data.postmate&&(t.parent.removeEventListener("message",e,!1),n(a.data.value))};parent.addEventListener("message",a,!1),t.child.postMessage({postmate:"request",type:o,property:e,uid:i},t.childOrigin)})}},{key:"on",value:function(e,t){this.events[e]=t}},{key:"destroy",value:function(){e("Parent: Destroying Postmate instance"),window.removeEventListener("message",this.listener,!1),this.frame.parentNode.removeChild(this.frame)}}]),t}(),h=function(){function t(a){var s=this;r(this,t),this.model=a.model,this.parent=a.parent,this.parentOrigin=a.parentOrigin,this.child=a.child,e("Child: Registering API"),e("Child: Awaiting messages..."),this.child.addEventListener("message",function(t){if(n(t,s.parentOrigin)){e("Child: Received request",t.data);var a=t.data,r=a.property,d=a.uid;i(s.model,r).then(function(e){return t.source.postMessage({property:r,postmate:"reply",type:o,uid:d,value:e},t.origin)})}})}return s(t,[{key:"emit",value:function(t,n){e('Child: Emitting Event "'+t+'"',n),this.parent.postMessage({postmate:"emit",type:o,value:{name:t,data:n}},this.parentOrigin)}}]),t}(),l=function(){function i(e){r(this,i);var t=e.container,n=e.url,a=e.model;return this.parent=window,this.frame=document.createElement("iframe"),(t||document.body).appendChild(this.frame),this.child=this.frame.contentWindow,this.model=a||{},this.sendHandshake(n)}return s(i,[{key:"sendHandshake",value:function(a){var r=this,s=t(a);return new i.Promise(function(t,i){var h=function a(o){return!!n(o,s)&&("handshake-reply"===o.data.postmate?(e("Parent: Received handshake reply from Child"),r.parent.removeEventListener("message",a,!1),r.childOrigin=o.origin,e("Parent: Saving Child origin",r.childOrigin),t(new d(r))):(e("Parent: Invalid handshake reply"),i("Failed handshake")))};r.parent.addEventListener("message",h,!1),r.frame.onload=function(){e("Parent: Sending handshake"),r.child.postMessage({postmate:"handshake",type:o,model:r.model},s)},e("Parent: Loading frame"),r.frame.src=a})}}]),i}();return l.debug=!1,l.Promise=window.Promise,l.Model=function(){function t(e){return r(this,t),this.child=window,this.model=e,this.parent=this.child.parent,this.sendHandshakeReply()}return s(t,[{key:"sendHandshakeReply",value:function(){var t=this;return new l.Promise(function(n,i){var a=function a(r){if("handshake"===r.data.postmate){e("Child: Received handshake from Parent"),t.child.removeEventListener("message",a,!1),e("Child: Sending handshake reply to Parent"),r.source.postMessage({postmate:"handshake-reply",type:o},r.origin),t.parentOrigin=r.origin;var s=r.data.model;if(s){for(var d=Object.keys(s),l=0;l<d.length;l++)s.hasOwnProperty(d[l])&&(t.model[d[l]]=s[d[l]]);e("Child: Inherited and extended model from Parent")}return e("Child: Saving Parent origin",t.parentOrigin),n(new h(t))}return i("Handshake Reply Failed")};t.child.addEventListener("message",a,!1)})}}]),t}(),l});