From e814bc0f5bc9bef483c7f9453f097382be262801 Mon Sep 17 00:00:00 2001
From: Vahe Hovhannisyan <vhpoet@gmail.com>
Date: Wed, 11 Mar 2015 18:27:36 -0700
Subject: [PATCH] [TASK] Trust: Don't show insignificant trustlines

Logged in user doesn't care about the lines where he/she's in a default state, limits are zero but the counterparty is not in a default state (has a non default flag)
---
 src/js/controllers/app.js | 42 ++++++++++++++++++++++++++-------------
 src/js/tabs/trust.js      | 11 +---------
 2 files changed, 29 insertions(+), 24 deletions(-)

diff --git a/src/js/controllers/app.js b/src/js/controllers/app.js
index e81f591ae..398988240 100644
--- a/src/js/controllers/app.js
+++ b/src/js/controllers/app.js
@@ -164,16 +164,18 @@ function AppCtrl ($scope, id, net, keychain, txQueue, appManager, rpTracker,
       for (var n = 0, l = data.lines.length; n < l; n++) {
         var line = data.lines[n];
 
-        // XXX: This reinterpretation of the server response should be in the
-        //      library upstream.
-        line = $.extend({}, line, {
-          limit: ripple.Amount.from_json({value: line.limit, currency: line.currency, issuer: line.account}),
-          limit_peer: ripple.Amount.from_json({value: line.limit_peer, currency: line.currency, issuer: account}),
-          balance: ripple.Amount.from_json({value: line.balance, currency: line.currency, issuer: account})
-        });
+        if (isSignificantLine(line)) {
+          // XXX: This reinterpretation of the server response should be in the
+          //      library upstream.
+          line = $.extend({}, line, {
+            limit: ripple.Amount.from_json({value: line.limit, currency: line.currency, issuer: line.account}),
+            limit_peer: ripple.Amount.from_json({value: line.limit_peer, currency: line.currency, issuer: account}),
+            balance: ripple.Amount.from_json({value: line.balance, currency: line.currency, issuer: account})
+          });
 
-        $scope.lines[line.account + line.currency] = line;
-        updateRippleBalance(line.currency, line.account, line.balance);
+          $scope.lines[line.account + line.currency] = line;
+          updateRippleBalance(line.currency, line.account, line.balance);
+        }
       }
       console.log('lines updated:', $scope.lines);
       if (data.lines.length > 200) {
@@ -427,6 +429,15 @@ function AppCtrl ($scope, id, net, keychain, txQueue, appManager, rpTracker,
     }
   }
 
+  // Current user doesn't care about a line where he/she's in a default state,
+  // limits are zero but the counterparty is not in a default state (has a non default flag)
+  function isSignificantLine(line) {
+    var DefaultRipple = $scope.account.Flags & ripple.Remote.flags.account_root.DefaultRipple;
+
+    return line.balance != 0 || line.limit != 0 || line.limit_peer != 0
+      || DefaultRipple === line.no_ripple;
+  }
+
   function updateLines(effects)
   {
     if (!$.isArray(effects)) return;
@@ -459,11 +470,6 @@ function AppCtrl ($scope, id, net, keychain, txQueue, appManager, rpTracker,
           balancesUpdated = true;
         }
 
-        if (effect.deleted) {
-          delete $scope.lines[index];
-          return;
-        }
-
         if (effect.limit) {
           line.limit = effect.limit;
         }
@@ -472,6 +478,14 @@ function AppCtrl ($scope, id, net, keychain, txQueue, appManager, rpTracker,
           line.limit_peer = effect.limit_peer;
         }
 
+        if (effect.deleted || !isSignificantLine({
+            balance: line.balance.to_number(),
+            limit: line.limit.to_number(),
+            limit_peer: line.limit_peer.to_number(),
+            no_ripple: line.no_ripple})) {
+          return delete $scope.lines[index];
+        }
+
         $scope.lines[index] = $.extend($scope.lines[index], line);
       }
     });
diff --git a/src/js/tabs/trust.js b/src/js/tabs/trust.js
index ba7578f0a..7ee61dc50 100644
--- a/src/js/tabs/trust.js
+++ b/src/js/tabs/trust.js
@@ -332,11 +332,9 @@ TrustTab.prototype.angular = function (module)
         }
 
         obj[line.currency].components.push(line);
-
       });
 
       $scope.accountLines = obj;
-      return;
     };
 
     $scope.$on('$balancesUpdate', function(){
@@ -408,26 +406,21 @@ TrustTab.prototype.angular = function (module)
         $scope.load_notification('remove_gateway');
 
         var setSecretAndSubmit = function(tx) {
-
           tx
             .on('proposed', function(res){
               $scope.$apply(function () {
-                setEngineStatus(res, false);              
+                setEngineStatus(res, false);
               });
             })
             .on('success', function(res){
               $scope.$apply(function () {
                 setEngineStatus(res, true);
-
-                $scope.trust.loading = false;
-                $scope.editing = false;
               });
             })
             .on('error', function(res){
               console.log('error', res);
               setImmediate(function () {
                 $scope.$apply(function () {
-
                   if (res.result === 'tejMaxFeeExceeded') {
                     $scope.load_notification('max_fee');
                   }
@@ -440,7 +433,6 @@ TrustTab.prototype.angular = function (module)
               });
             });
 
-
           keychain.requestSecret(id.account, id.username, function (err, secret) {
             if (err) {
               $scope.mode = 'error';
@@ -449,7 +441,6 @@ TrustTab.prototype.angular = function (module)
               console.log('Error on requestSecret: ', err);
 
               $scope.reset();
-              
               return;
             }