Refactor of code into separate reducers and actions.

app/scripts/controllers/preferences.js

@@ -29,7 +29,7 @@ class PreferencesController {
     return this.addToFrequentRpcList(_url)
       .then((rpcList) => {
         this.store.updateState({ frequentRpcList: rpcList })
-        return rpcList
+        return Promise.resolve()
       })
   }
 

app/scripts/metamask-controller.js

@@ -244,7 +244,8 @@ module.exports = class MetamaskController extends EventEmitter {
     return {
       // etc
       getState:              (cb) => cb(null, this.getState()),
-      setRpcTarget:          this.setRpcTarget.bind(this),
+      setDefaultRpc:         this.setDefaultRpc.bind(this),
+      setCustomRpc:          this.setCustomRpc.bind(this),
       setProviderType:       this.setProviderType.bind(this),
       useEtherscanProvider:  this.useEtherscanProvider.bind(this),
       setCurrentCurrency:    this.setCurrentCurrency.bind(this),
@@ -265,7 +266,6 @@ module.exports = class MetamaskController extends EventEmitter {
 
       // PreferencesController
       setSelectedAddress:        nodeify(preferencesController.setSelectedAddress).bind(preferencesController),
-      updateFrequentRpcList:      nodeify(preferencesController.updateFrequentRpcList).bind(preferencesController),
 
       // KeyringController
       setLocked:                 nodeify(keyringController.setLocked).bind(keyringController),
@@ -662,10 +662,19 @@ module.exports = class MetamaskController extends EventEmitter {
     if (this.isNetworkLoading()) this.lookupNetwork()
   }
 
-  setRpcTarget (rpcTarget) {
+  setDefaultRpc () {
+    this.configManager.setRpcTarget('http://localhost:8545')
+    extension.runtime.reload()
+    this.lookupNetwork()
+  }
+
+  setCustomRpc (rpcTarget, rpcList) {
     this.configManager.setRpcTarget(rpcTarget)
+    return this.preferencesController.updateFrequentRpcList(rpcTarget)
+      .then(() => {
         extension.runtime.reload()
         this.lookupNetwork()
+      })
   }
 
   setProviderType (type) {

test/unit/actions/config_test.js

@@ -36,16 +36,10 @@ describe ('config view actions', function() {
         value: 'foo',
       }
 
-      const secondAction = {
-        type: actions.SET_RPC_LIST,
-        value: ['foo'],
-      }
-
       var result = reducers(initialState, action)
       result = reducers(result, secondAction)
       assert.equal(result.metamask.provider.type, 'rpc')
       assert.equal(result.metamask.provider.rpcTarget, 'foo')
-      assert.equal(result.metamask.frequentRpcList[0], 'foo')
     })
 
     it('should handle multiple requests to change the rpc gracefully', function() {
@@ -60,10 +54,8 @@ describe ('config view actions', function() {
       }
 
       var result = reducers(initialState, action)
-      var secondResult = reducers(result, secondAction)
-      var thirdResult = reducers(secondResult, action)
-      var fourthResult = reducers(thirdResult, secondAction)
-      assert.equal(fourthResult.metamask.frequentRpcList.length, 1)
+      var secondResult = reducers(result, action)
+      assert.equal(secondResult.metamask.frequentRpcList.length, 1)
     })
   })
 

ui/app/actions.js

@@ -674,33 +674,21 @@ function markAccountsFound() {
 // default rpc target refers to localhost:8545 in this instance.
 function setDefaultRpcTarget (rpcList) {
   log.debug(`background.setDefaultRpcTarget`)
-  background.setRpcTarget('http://localhost:8545')
-  return (dispatch) => {
-    dispatch({
+  background.setDefaultRpc()
+  return {
     type: actions.SET_RPC_TARGET,
     value: 'http://localhost:8545',
-    })
-    dispatch({
-      type: actions.SET_RPC_LIST,
-      value: rpcList,
-    })
   }
 }
 
 function setRpcTarget (newRpc) {
   return (dispatch) => {
     log.debug(`background.setRpcTarget`)
-    background.setRpcTarget(newRpc)
-    background.updateFrequentRpcList(newRpc, (rpcList) => {
-      dispatch({
+    background.setCustomRpc(newRpc)
+    return {
       type: actions.SET_RPC_TARGET,
       value: newRpc,
-      })
-      dispatch({
-        type: actions.SET_RPC_LIST,
-        value: rpcList,
-      })
-    })
+    }
   }
 }
 

ui/app/reducers/metamask.js

@@ -18,6 +18,7 @@ function reduceMetamask (state, action) {
     conversionDate: 'N/A',
     noActiveNotices: true,
     lastUnreadNotice: undefined,
+    frequentRpcList: [],
   }, state.metamask)
 
   switch (action.type) {