calculator

src/js/controllers/send2.js

@@ -0,0 +1,80 @@
+'use strict';
+
+angular.module('copayApp.controllers').controller('send2Controller',
+  function($scope, lodash, configService, go) {
+    var config = configService.getSync().wallet.settings;
+    $scope.unitName = config.unitName;
+    $scope.alternativeIsoCode = config.alternativeIsoCode;
+    $scope.amount = $scope.result = 0;
+    $scope.showAlternative = false;
+
+    $scope.toggleAlternative = function() {
+      $scope.showAlternative = !$scope.showAlternative;
+    };
+
+    $scope.close = function() {
+      go.walletHome();
+    };
+
+    $scope.pushDigit = function(digit) {
+      if ($scope.amount.length >= 10) return;
+      var amount;
+      if ($scope.amount == 0 && digit == 0) return;
+      amount = $scope.amount ? $scope.amount + digit : digit;
+      evaluate(amount);
+    };
+
+    $scope.pushOperator = function(operator) {
+      if (!$scope.amount || $scope.amount.length == 0) return;
+      if (!isOperator(lodash.last($scope.amount))) {
+        $scope.amount = $scope.amount + operator;
+      } else
+        $scope.amount = $scope.amount.slice(0, -1) + operator;
+    };
+
+    $scope.removeDigit = function() {
+      if (!$scope.amount || $scope.amount.length == 0) {
+        resetAmount();
+        return;
+      }
+
+      var amount;
+      $scope.amount = amount = $scope.amount.slice(0, -1);
+      evaluate(amount);
+    };
+
+    function isOperator(val) {
+      var regex = /[\/\-\+\*]/;
+      var match = regex.exec(val);
+      if (match) return true;
+      return false;
+    };
+
+    function resetAmount() {
+      $scope.amount = $scope.result = 0;
+    };
+
+    function evaluate(val) {
+      if (!val) {
+        resetAmount();
+        return;
+      }
+
+      if ($scope.amount == 0 && val == '.') {
+        $scope.amount += val;
+        return;
+      }
+
+      var result;
+      try {
+        result = eval(val);
+      } catch (e) {
+        return;
+      }
+
+      if (lodash.isNumber(result)) {
+        $scope.result = result;
+        $scope.amount = val;
+      }
+    };
+  });