improve iframe compatibility (#103)

Author: hewigovens

dist/trust-min.js

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:41ad79db8f78e8c50aeb46d628328f0a870570bee906f068e4a0ba7d9055d1ec
-size 534862
+oid sha256:93ffe1eac4c7c904c92ce870e6e334ce8037191b4208ee90fd45b57592168e0a
+size 535058

ios/TrustWeb3Provider/DAppWebViewController.swift

@@ -210,4 +210,23 @@ extension DAppWebViewController: WKUIDelegate {
         _ = webView.load(navigationAction.request)
         return nil
     }
+
+    func webView(_ webView: WKWebView, runJavaScriptAlertPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping () -> Void) {
+        let alert = UIAlertController(title: "", message: message, preferredStyle: .alert)
+        alert.addAction(.init(title: "OK", style: .default, handler: { _ in
+            completionHandler()
+        }))
+        present(alert, animated: true, completion: nil)
+    }
+
+    func webView(_ webView: WKWebView, runJavaScriptConfirmPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping (Bool) -> Void) {
+        let alert = UIAlertController(title: "", message: message, preferredStyle: .alert)
+        alert.addAction(.init(title: "OK", style: .default, handler: { _ in
+            completionHandler(true)
+        }))
+        alert.addAction(.init(title: "Cancel", style: .cancel, handler: { _ in
+            completionHandler(false)
+        }))
+        present(alert, animated: true, completion: nil)
+    }
 }

src/index.js

@@ -12,7 +12,7 @@ import ProviderRpcError from "./error";
 import Utils from "./utils";
 import IdMapping from "./id_mapping";
 import { EventEmitter } from "events";
-import isUtf8 from 'isutf8';
+import isUtf8 from "isutf8";
 
 class TrustWeb3Provider extends EventEmitter {
   constructor(config) {
@@ -44,7 +44,7 @@ class TrustWeb3Provider extends EventEmitter {
     // this points to window in methods like web3.eth.getAccounts()
     var that = this;
     if (!(this instanceof TrustWeb3Provider)) {
-      that = window.ethereum
+      that = window.ethereum;
     }
     return that._request(payload, false);
   }
@@ -60,7 +60,7 @@ class TrustWeb3Provider extends EventEmitter {
    * @deprecated Use request({method: "eth_requestAccounts"}) instead.
    */
   enable() {
-    console.log('enable() is deprecated, please use window.ethereum.request({method: "eth_requestAccounts"}) instead.')
+    console.log("enable() is deprecated, please use window.ethereum.request({method: \"eth_requestAccounts\"}) instead.");
     return this.request({ method: "eth_requestAccounts", params: [] });
   }
 
@@ -95,11 +95,11 @@ class TrustWeb3Provider extends EventEmitter {
    * @deprecated Use request() method instead.
    */
   sendAsync(payload, callback) {
-    console.log('sendAsync(data, callback) is deprecated, please use window.ethereum.request(data) instead.')
+    console.log("sendAsync(data, callback) is deprecated, please use window.ethereum.request(data) instead.");
     // this points to window in methods like web3.eth.getAccounts()
     var that = this;
     if (!(this instanceof TrustWeb3Provider)) {
-      that = window.ethereum
+      that = window.ethereum;
     }
     if (Array.isArray(payload)) {
       Promise.all(payload.map(that._request.bind(that)))
@@ -208,7 +208,7 @@ class TrustWeb3Provider extends EventEmitter {
     } else {
       buffer = Buffer.from(data);
     }
-    const hex = buffer.toString('hex');
+    const hex = buffer.toString("hex");
     if (isUtf8(buffer)) {
       this.postMessage("signPersonalMessage", payload.id, {data: hex});
     } else {
@@ -266,11 +266,20 @@ class TrustWeb3Provider extends EventEmitter {
       data.result = result;
     }
     if (this.isDebug) {
-      console.log(`<== sendResponse id: ${id}, result: ${result}, data: ${JSON.stringify(data)}`);
+      console.log(`<== sendResponse id: ${id}, result: ${JSON.stringify(result)}, data: ${JSON.stringify(data)}`);
     }
     if (callback) {
       wrapResult ? callback(null, data) : callback(null, result);
       this.callbacks.delete(id);
+    } else {
+      console.log(`callback id: ${id} not found`);
+      // check if it's iframe callback
+      for (var i = 0; i < window.frames.length; i++) {
+        const frame = window.frames[i];
+        if (frame.ethereum.callbacks.has(id)) {
+          frame.ethereum.sendResponse(id, result);
+        }
+      }
     }
   }
 

src/tests/test.js

@@ -6,7 +6,7 @@
 
 "use strict";
 
-var ethUtil = require('ethereumjs-util')
+var ethUtil = require("ethereumjs-util");
 require("../index");
 const Trust = window.Trust;
 const Web3 = require("web3");
@@ -35,7 +35,7 @@ describe("TrustWeb3Provider constructor tests", () => {
       chainId: 1,
       rpcUrl: ""
     });
-    const address = mainnet.address
+    const address = mainnet.address;
     expect(provider.address).toBe("");
 
     provider.setAddress(address);
@@ -91,7 +91,7 @@ describe("TrustWeb3Provider constructor tests", () => {
     web3.eth.getAccounts((error, accounts) => {
       expect(accounts).toEqual(addresses);
       done();
-    })
+    });
 
     provider.request({method: "eth_accounts"}).then((accounts) => {
       expect(accounts).toEqual(addresses);
@@ -118,7 +118,7 @@ describe("TrustWeb3Provider constructor tests", () => {
           }
         }
       }
-    }
+    };
 
     var hash = ethUtil.keccak256(Buffer.from("An amazing message, for use with MetaMask!", "utf8"));
     var hex = "0x" + hash.toString("hex");

src/utils.js

@@ -6,7 +6,7 @@
 
 "use strict";
 
-import { Buffer } from 'buffer';
+import { Buffer } from "buffer";
 
 class Utils {
   static genId() {
@@ -40,11 +40,11 @@ class Utils {
   }
 
   static hexToBuffer(str) {
-    return Buffer.from(str.replace('0x', ''), 'hex');
+    return Buffer.from(str.replace("0x", ""), "hex");
   }
 
   static bufferToHex(buf) {
-    return Buffer.from(buf).toString('hex');
+    return Buffer.from(buf).toString("hex");
   }
 }