@aeternity/aepp-sdk/es/utils/aepp-wallet-communication/content-script-bridge.js

SDK for the æternity blockchain

/*
 * ISC License (ISC)
 * Copyright (c) 2018 aeternity developers
 *
 *  Permission to use, copy, modify, and/or distribute this software for any
 *  purpose with or without fee is hereby granted, provided that the above
 *  copyright notice and this permission notice appear in all copies.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
 *  REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 *  AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
 *  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 *  LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
 *  OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 *  PERFORMANCE OF THIS SOFTWARE.
 */

/**
 * Content Script Bridge module
 *
 * @module @aeternity/aepp-sdk/es/utils/aepp-wallet-communication/content-script-bridge
 * @export ContentScriptBridge
 * @example import ContentScriptBridge from '@aeternity/aepp-sdk/es/utils/wallet-communication/content-script-bridge
 */
import stampit from '@stamp/it';
/**
 * Start message proxy
 * @function run
 * @instance
 * @return {void}
 */

function run() {
  var _this = this;

  var allowCrossOrigin = this.allowCrossOrigin; // Connect to extension using runtime

  this.extConnection.connect(function (msg) {
    _this.pageConnection.sendMessage(msg);
  }); // Connect to page using window.postMessage

  this.pageConnection.connect(function (msg, origin, source) {
    if (!allowCrossOrigin && source !== window) return;

    _this.extConnection.sendMessage(msg);
  });
}
/**
 * Stop message proxy
 * @function stop
 * @instance
 * @return {void}
 */


function stop() {
  this.extConnection.disconnect();
  this.pageConnection.disconnect();
}
/**
 * ContentScriptBridge stamp
 * Provide functionality to easly redirect messages from page to extension and from extension to page through content script
 * Using Runtime(Extension) and WindowPostMessage(Web-Page) connections
 * @function
 * @alias module:@aeternity/aepp-sdk/es/utils/aepp-wallet-communication/content-script-bridge
 * @rtype Stamp
 * @param {Object} params - Initializer object
 * @param {Object} params.pageConnection - Page connection object(@link module:@aeternity/aepp-sdk/es/utils/aepp-wallet-communication/connection/browser-window-message)
 * @param {Object} params.extConnection - Extension connection object(module: @aeternity/aepp-sdk/es/utils/aepp-wallet-communication/connection/browser-runtime)
 * @return {Object}
 */


export default stampit({
  init: function init(_ref) {
    var pageConnection = _ref.pageConnection,
        extConnection = _ref.extConnection,
        _ref$allowCrossOrigin = _ref.allowCrossOrigin,
        allowCrossOrigin = _ref$allowCrossOrigin === void 0 ? false : _ref$allowCrossOrigin;
    if (!window) throw new Error('Window object not found, you can run bridge only in browser');
    if (!pageConnection) throw new Error('pageConnection required');
    if (!extConnection) throw new Error('extConnection required');
    this.allowCrossOrigin = allowCrossOrigin;
    this.pageConnection = pageConnection;
    this.extConnection = extConnection;
  },
  methods: {
    run: run,
    stop: stop
  }
});
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