Add token selection to the send screen (#6445)

* Move send to pages/

* Fix unit tests

* Finish UI

* Integrate asset dropdown to send actions

* Remove console.log

* Hide asset change during edit

* Enable switch from send token to seand eth

* Enable switching from token to eth when editing

* Fix linter

* Fixing test

* Fix unit tests

* Fix linter

* Fix react warning; remove console.log

* fix flat test

* Add metrics

* Address code review comments

* Consistent spacing between send screen form rows.

* Reduce height of gas buttons on send screen.

* Make send screen gas button height dependent on size of contents.

1 files changed, 18 insertions, 1 deletions

diff --git a/ui/app/ducks/metamask/metamask.js b/ui/app/ducks/metamask/metamask.js
index 47c767d68..3ca487c1f 100644
--- a/ui/app/ducks/metamask/metamask.js
+++ b/ui/app/ducks/metamask/metamask.js
@@ -154,9 +154,26 @@ function reduceMetamask (state, action) {
       return newState
 
     case actions.SET_SELECTED_TOKEN:
-      return extend(metamaskState, {
+      newState = extend(metamaskState, {
         selectedTokenAddress: action.value,
       })
+      const newSend = extend(metamaskState.send)
+
+      if (metamaskState.send.editingTransactionId && !action.value) {
+        delete newSend.token
+        const unapprovedTx = newState.unapprovedTxs[newSend.editingTransactionId] || {}
+        const txParams = unapprovedTx.txParams || {}
+        newState.unapprovedTxs = extend(newState.unapprovedTxs, {
+          [newSend.editingTransactionId]: extend(unapprovedTx, {
+            txParams: extend(txParams, { data: '' }),
+          }),
+        })
+        newSend.tokenBalance = null
+        newSend.balance = '0'
+      }
+
+      newState.send = newSend
+      return newState
 
     case actions.SET_ACCOUNT_LABEL:
       const account = action.value.account