Add new selectors for addresses, identities, and accounts

ui/app/selectors.js

@@ -0,0 +1,27 @@
+const selectors = {
+  getSelectedAddress,
+  getSelectedIdentity,
+  getSelectedAccount,
+}
+
+module.exports = selectors
+
+function getSelectedAddress(state) {
+  const selectedAddress = state.metamask.selectedAddress || Object.keys(accounts)[0]
+
+  return selectedAddress
+}
+
+function getSelectedIdentity(state) {
+  const selectedAddress = getSelectedAddress(state)
+  const identities = state.metamask.identities
+
+  return identities[selectedAddress]
+}
+
+function getSelectedAccount(state) {
+  const accounts = state.metamask.accounts
+  const selectedAddress = getSelectedAddress(state)
+
+  return accounts[selectedAddress]
+}