fix(sidemenu): prevent scroll during menu drag

Closes #2808

Author: adamdbradley

Diff for: js/angular/controller/scrollController.js

@@ -162,7 +162,7 @@ function($scope,
 
   self.freezeAllScrolls = function(shouldFreeze) {
     for (var i = 0; i < $ionicScrollDelegate._instances.length; i++) {
-      $ionicScrollDelegate._instances[x].freezeScroll(shouldFreeze);
+      $ionicScrollDelegate._instances[i].freezeScroll(shouldFreeze);
     }
   };
 

Diff for: js/angular/controller/sideMenuController.js

@@ -6,7 +6,8 @@ IonicModule
   '$ionicPlatform',
   '$ionicBody',
   '$ionicHistory',
-function($scope, $attrs, $ionicSideMenuDelegate, $ionicPlatform, $ionicBody, $ionicHistory) {
+  '$ionicScrollDelegate',
+function($scope, $attrs, $ionicSideMenuDelegate, $ionicPlatform, $ionicBody, $ionicHistory, $ionicScrollDelegate) {
   var self = this;
   var rightShowing, leftShowing, isDragging;
   var startX, lastX, offsetX, isAsideExposed;
@@ -148,8 +149,20 @@ function($scope, $attrs, $ionicSideMenuDelegate, $ionicPlatform, $ionicBody, $io
     // add the CSS class "menu-open" if the percentage does not
     // equal 0, otherwise remove the class from the body element
     $ionicBody.enableClass((percentage !== 0), 'menu-open');
+
+    freezeAllScrolls(false);
   };
 
+  function freezeAllScrolls(shouldFreeze) {
+    if (shouldFreeze && !self.isScrollFreeze) {
+      $ionicScrollDelegate.freezeAllScrolls(shouldFreeze);
+
+    } else if (!shouldFreeze && self.isScrollFreeze) {
+      $ionicScrollDelegate.freezeAllScrolls(false);
+    }
+    self.isScrollFreeze = shouldFreeze;
+  }
+
   /**
    * Open the menu the given pixel amount.
    * @param {float} amount the pixel amount to open the menu. Positive value for left menu,
@@ -297,6 +310,8 @@ function($scope, $attrs, $ionicSideMenuDelegate, $ionicPlatform, $ionicBody, $io
 
   // End a drag with the given event
   self._endDrag = function(e) {
+    freezeAllScrolls(false);
+
     if (isAsideExposed) return;
 
     if (isDragging) {
@@ -334,6 +349,7 @@ function($scope, $attrs, $ionicSideMenuDelegate, $ionicPlatform, $ionicBody, $io
 
     if (isDragging) {
       self.openAmount(offsetX + (lastX - startX));
+      freezeAllScrolls(true);
     }
   };
 
@@ -415,6 +431,9 @@ function($scope, $attrs, $ionicSideMenuDelegate, $ionicPlatform, $ionicBody, $io
       self.content.element = null;
       self.content = null;
     }
+
+    // ensure scrolls are unfrozen
+    freezeAllScrolls(false);
   });
 
   self.initialize({