feat(scan): create Scan tab and scannerService, implement QRScanner and controls

src/js/controllers/tab-scan.js

@@ -0,0 +1,45 @@
+'use strict';
+
+angular.module('copayApp.controllers').controller('tabScanController', function($scope, $log, $timeout, scannerService, incomingData) {
+
+  $scope.$on("$ionicView.beforeEnter", function() {
+    $log.debug('Preparing to display available controls.');
+    var capabilities = scannerService.getCapabilities();
+    $scope.canEnableLight = capabilities.canEnableLight;
+    $scope.canChangeCamera = capabilities.canChangeCamera;
+  });
+
+  $scope.$on("$ionicView.afterEnter", function() {
+    scannerService.activate(function(){
+      scannerService.scan(function(err, contents){
+        if(err){
+          $log.debug('Scan canceled.');
+        } else {
+          incomingData.redir(contents);
+        }
+      });
+    });
+  });
+  $scope.$on("$ionicView.afterLeave", function() {
+    scannerService.deactivate();
+  });
+
+  $scope.toggleLight = function(){
+    scannerService.toggleLight(function(lightEnabled){
+      $scope.lightActive = lightEnabled;
+      $scope.$apply();
+    });
+  };
+
+  $scope.toggleCamera = function(){
+    $scope.cameraToggleActive = true;
+    scannerService.toggleCamera(function(status){
+    // (a short delay for the user to see the visual feedback)
+      $timeout(function(){
+        $scope.cameraToggleActive = false;
+        $log.debug('Camera toggle control deactivated.');
+      }, 200);
+    });
+  };
+
+});

src/js/controllers/tab-send.js

@@ -97,12 +97,6 @@ angular.module('copayApp.controllers').controller('tabSendController', function(
     });
   };
 
-  $scope.onQrCodeScanned = function(data) {
-    if (!incomingData.redir(data)) {
-      popupService.showAlert(null, gettextCatalog.getString('Invalid data'));
-    }
-  };
-
   $scope.$on("$ionicView.beforeEnter", function(event, data) {
     $scope.formData = {
       search: null