Merge branch 'wallet/task/537' of https://github.com/Bitcoin-com/Wallet into wallet/task/537

src/js/directives/formattedAmount.js

@@ -33,10 +33,15 @@ angular.module('bitcoincom.directives')
             '8': ['BCH', 'BTC']
           };
           var localizeNumbers = function(x, minimumFractionDigits) {
-            return parseFloat(x).toLocaleString(uxLanguage.getCurrentLanguage(), {
+            var parsed = parseFloat(x);
+            var opts = {
               minimumFractionDigits: minimumFractionDigits,
               useGrouping: true
-            });
+            };
+            var lang = uxLanguage.getCurrentLanguage();
+            var localized = parsed.toLocaleString(lang, opts);
+            var corrected =  ensureEnoughFractionalDigits(localized, x, minimumFractionDigits);
+            return corrected;
           };
   
           var buildAmount = function(start, middle, end) {
@@ -61,7 +66,6 @@ angular.module('bitcoincom.directives')
           };
   
           var formatNumbers = function() {
-            
             // During watch, may be changed from having a separate currency value,
             // to both being in value. Don't want to use previous currency value.
             // Try to extract currency from value..
@@ -128,6 +132,44 @@ angular.module('bitcoincom.directives')
           $scope.$watchGroup(['currency', 'value'], function onFormattedAmountWatch() {
             formatNumbers();
           });
+
+          /**
+           * On Android 4.4, toLocaleString() only returns 3 fractional digits when 8 is specified.
+           */
+          function ensureEnoughFractionalDigits(localizedString, number, desiredFractionDigits) {
+            if (desiredFractionDigits === 0) {
+              // Assume it is OK
+              return localizedString;
+            }
+            var fractionalRe = /^(\d*\D)(\d+)$/;
+            var match = fractionalRe.exec(localizedString);
+            if (match.length !== 3) {
+              // Don't know what's happening, just return what we have
+              return localizedString;
+            }
+
+            var decimals = match[2];
+            var decimalCount = decimals.length;
+            if (decimalCount >= desiredFractionDigits) {
+              // Everything is OK.
+              return localizedString;
+            }
+
+            if (typeof number !== 'number') {
+              number = parseFloat(number);
+            }
+            
+            var fixed = number.toFixed(desiredFractionDigits);
+            var fixedMatch = fractionalRe.exec(fixed);
+            if (fixedMatch.length !== 3) {
+              // Don't know what's happening, just return what we have
+              return localizedString;
+            }
+
+            // Keeps locale decimal separator.
+            var enough = match[1] + fixedMatch[2];
+            return enough;
+          }
         });
       }
     };