popup - breakout popup-core

1 files changed, 63 insertions, 0 deletions

diff --git a/app/scripts/popup-core.js b/app/scripts/popup-core.js
new file mode 100644
index 000000000..94413a1c4
--- /dev/null
+++ b/app/scripts/popup-core.js
@@ -0,0 +1,63 @@
+const EventEmitter = require('events').EventEmitter
+const Dnode = require('dnode')
+const Web3 = require('web3')
+const MetaMaskUi = require('../../ui')
+const StreamProvider = require('web3-stream-provider')
+const setupMultiplex = require('./lib/stream-utils.js').setupMultiplex
+
+
+module.exports = initializePopup
+
+
+function initializePopup(connectionStream){
+  // setup app
+  connectToAccountManager(connectionStream, setupApp)
+}
+
+function connectToAccountManager (connectionStream, cb) {
+  // setup communication with background
+  // setup multiplexing
+  var mx = setupMultiplex(connectionStream)
+  // connect features
+  setupControllerConnection(mx.createStream('controller'), cb)
+  setupWeb3Connection(mx.createStream('provider'))
+}
+
+function setupWeb3Connection (connectionStream) {
+  var providerStream = new StreamProvider()
+  providerStream.pipe(connectionStream).pipe(providerStream)
+  connectionStream.on('error', console.error.bind(console))
+  providerStream.on('error', console.error.bind(console))
+  global.web3 = new Web3(providerStream)
+}
+
+function setupControllerConnection (connectionStream, cb) {
+  // this is a really sneaky way of adding EventEmitter api 
+  // to a bi-directional dnode instance
+  var eventEmitter = new EventEmitter()
+  var accountManagerDnode = Dnode({
+    sendUpdate: function (state) {
+      eventEmitter.emit('update', state)
+    },
+  })
+  connectionStream.pipe(accountManagerDnode).pipe(connectionStream)
+  accountManagerDnode.once('remote', function (accountManager) {
+    // setup push events
+    accountManager.on = eventEmitter.on.bind(eventEmitter)
+    cb(null, accountManager)
+  })
+}
+
+function setupApp (err, accountManager) {
+  if (err) {
+    alert(err.stack)
+    throw err
+  }
+
+  var container = document.getElementById('app-content')
+
+  MetaMaskUi({
+    container: container,
+    accountManager: accountManager,
+  })
+}