From ea7948f4209b365980f2dbf0f246f53efe6acceb Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Wed, 13 Aug 2014 21:06:57 -0400
Subject: [PATCH] paypro: better error display on no unspent outputs.

---
 js/controllers/send.js | 16 ++++++++++++++++
 views/send.html        |  2 +-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/js/controllers/send.js b/js/controllers/send.js
index 1bbbf0270..1417002c0 100644
--- a/js/controllers/send.js
+++ b/js/controllers/send.js
@@ -430,13 +430,29 @@ angular.module('copayApp.controllers').controller('SendController',
 
         if (err) {
           scope.sendForm.address.$isValid = false;
+
           if (err.amount) {
             scope.sendForm.amount.$setViewValue(+err.amount / config.unitToSatoshi);
             scope.sendForm.amount.$render();
             scope.sendForm.amount.$isValid = false;
             scope.notEnoughAmount = true;
+            $rootScope.merchantError = true;
+            var lastAddr = scope.sendForm.address.$viewValue;
+            var unregister = scope.$watch('address', function() {
+              if (scope.sendForm.address.$viewValue !== lastAddr) {
+                delete $rootScope.merchantError;
+                scope.sendForm.amount.$setViewValue('');
+                scope.sendForm.amount.$render();
+                unregister();
+                if ($rootScope.$$phase !== '$apply' && $rootScope.$$phase !== '$digest') {
+                  $rootScope.$apply();
+                }
+              }
+            });
           }
+
           notification.error('Error', err.message || 'Bad payment server.');
+
           if ($rootScope.$$phase !== '$apply' && $rootScope.$$phase !== '$digest') {
             $rootScope.$apply();
           }
diff --git a/views/send.html b/views/send.html
index 9861deead..05328c8e3 100644
--- a/views/send.html
+++ b/views/send.html
@@ -65,7 +65,7 @@
               </label>
               <div class="small-9 columns">
                 <input type="number" id="amount"
-                ng-disabled="loading || ($root.merchant && +$root.merchant.total > 0)"
+                ng-disabled="loading || ($root.merchant && +$root.merchant.total > 0) || $root.merchantError"
                 name="amount" placeholder="Amount" ng-model="amount"
                 min="0.00005400" max="10000000000" enough-amount required
                 autocomplete="off"