1 files changed, 30 insertions, 92 deletions

diff --git a/app/scripts/inpage.js b/app/scripts/inpage.js
index 71cfb875c..a4fb552f1 100644
--- a/app/scripts/inpage.js
+++ b/app/scripts/inpage.js
@@ -7,32 +7,12 @@ const setupDappAutoReload = require('./lib/auto-reload.js')
 const MetamaskInpageProvider = require('metamask-inpage-provider')
 const createStandardProvider = require('./createStandardProvider').default
 
-let isEnabled = false
 let warned = false
-let providerHandle
-let isApprovedHandle
-let isUnlockedHandle
 
 restoreContextAfterImports()
 
 log.setDefaultLevel(process.env.METAMASK_DEBUG ? 'debug' : 'warn')
 
-/**
- * Adds a postMessage listener for a specific message type
- *
- * @param {string} messageType - postMessage type to listen for
- * @param {Function} handler - event handler
- * @param {boolean} remove - removes this handler after being triggered
- */
-function onMessage (messageType, callback, remove) {
-  const handler = function ({ data }) {
-    if (!data || data.type !== messageType) { return }
-    remove && window.removeEventListener('message', handler)
-    callback.apply(window, arguments)
-  }
-  window.addEventListener('message', handler)
-}
-
 //
 // setup plugin communication
 //
@@ -49,45 +29,16 @@ const inpageProvider = new MetamaskInpageProvider(metamaskStream)
 // set a high max listener count to avoid unnecesary warnings
 inpageProvider.setMaxListeners(100)
 
-// set up a listener for when MetaMask is locked
-onMessage('metamasksetlocked', () => { isEnabled = false })
-
-// set up a listener for privacy mode responses
-onMessage('ethereumproviderlegacy', ({ data: { selectedAddress } }) => {
-  isEnabled = true
-  setTimeout(() => {
-    inpageProvider.publicConfigStore.updateState({ selectedAddress })
-  }, 0)
-}, true)
-
 // augment the provider with its enable method
 inpageProvider.enable = function ({ force } = {}) {
   return new Promise((resolve, reject) => {
-    providerHandle = ({ data: { error, selectedAddress } }) => {
-      if (typeof error !== 'undefined') {
-        reject({
-          message: error,
-          code: 4001,
-        })
+    inpageProvider.sendAsync({ method: 'eth_requestAccounts', params: [force] }, (error, response) => {
+      if (error) {
+        reject(error)
       } else {
-        window.removeEventListener('message', providerHandle)
-        setTimeout(() => {
-          inpageProvider.publicConfigStore.updateState({ selectedAddress })
-        }, 0)
-
-        // wait for the background to update with an account
-        inpageProvider.sendAsync({ method: 'eth_accounts', params: [] }, (error, response) => {
-          if (error) {
-            reject(error)
-          } else {
-            isEnabled = true
-            resolve(response.result)
-          }
-        })
+        resolve(response.result)
       }
-    }
-    onMessage('ethereumprovider', providerHandle, true)
-    window.postMessage({ type: 'ETHEREUM_ENABLE_PROVIDER', force }, '*')
+    })
   })
 }
 
@@ -98,31 +49,23 @@ inpageProvider.autoRefreshOnNetworkChange = true
 // add metamask-specific convenience methods
 inpageProvider._metamask = new Proxy({
   /**
-   * Determines if this domain is currently enabled
+   * Synchronously determines if this domain is currently enabled, with a potential false negative if called to soon
    *
-   * @returns {boolean} - true if this domain is currently enabled
+   * @returns {boolean} - returns true if this domain is currently enabled
    */
   isEnabled: function () {
-    return isEnabled
+    const { isEnabled } = inpageProvider.publicConfigStore.getState()
+    return Boolean(isEnabled)
   },
 
   /**
-   * Determines if this domain has been previously approved
+   * Asynchronously determines if this domain is currently enabled
    *
-   * @returns {Promise<boolean>} - Promise resolving to true if this domain has been previously approved
+   * @returns {Promise<boolean>} - Promise resolving to true if this domain is currently enabled
    */
-  isApproved: function () {
-    return new Promise((resolve) => {
-      isApprovedHandle = ({ data: { caching, isApproved } }) => {
-        if (caching) {
-          resolve(!!isApproved)
-        } else {
-          resolve(false)
-        }
-      }
-      onMessage('ethereumisapproved', isApprovedHandle, true)
-      window.postMessage({ type: 'ETHEREUM_IS_APPROVED' }, '*')
-    })
+  isApproved: async function () {
+    const { isEnabled } = await getPublicConfigWhenReady()
+    return Boolean(isEnabled)
   },
 
   /**
@@ -130,14 +73,9 @@ inpageProvider._metamask = new Proxy({
    *
    * @returns {Promise<boolean>} - Promise resolving to true if MetaMask is currently unlocked
    */
-  isUnlocked: function () {
-    return new Promise((resolve) => {
-      isUnlockedHandle = ({ data: { isUnlocked } }) => {
-        resolve(!!isUnlocked)
-      }
-      onMessage('metamaskisunlocked', isUnlockedHandle, true)
-      window.postMessage({ type: 'METAMASK_IS_UNLOCKED' }, '*')
-    })
+  isUnlocked: async function () {
+    const { isUnlocked } = await getPublicConfigWhenReady()
+    return Boolean(isUnlocked)
   },
 }, {
   get: function (obj, prop) {
@@ -149,6 +87,19 @@ inpageProvider._metamask = new Proxy({
   },
 })
 
+// publicConfig isn't populated until we get a message from background.
+// Using this getter will ensure the state is available
+async function getPublicConfigWhenReady () {
+  const store = inpageProvider.publicConfigStore
+  let state = store.getState()
+  // if state is missing, wait for first update
+  if (!state.networkVersion) {
+    state = await new Promise(resolve => store.once('update', resolve))
+    console.log('new state', state)
+  }
+  return state
+}
+
 // Work around for web3@1.0 deleting the bound `sendAsync` but not the unbound
 // `sendAsync` method on the prototype, causing `this` reference issues with drizzle
 const proxiedInpageProvider = new Proxy(inpageProvider, {
@@ -159,19 +110,6 @@ const proxiedInpageProvider = new Proxy(inpageProvider, {
 
 window.ethereum = createStandardProvider(proxiedInpageProvider)
 
-// detect eth_requestAccounts and pipe to enable for now
-function detectAccountRequest (method) {
-  const originalMethod = inpageProvider[method]
-  inpageProvider[method] = function ({ method }) {
-    if (method === 'eth_requestAccounts') {
-      return window.ethereum.enable()
-    }
-    return originalMethod.apply(this, arguments)
-  }
-}
-detectAccountRequest('send')
-detectAccountRequest('sendAsync')
-
 //
 // setup web3
 //