fix(menu): proper setting of leftShowing flag

* fix(menu): proper setting of leftShowing flag

* fix(menu): optimized setting of leftShowing and rightShowing flag

Author: dennybiasiolli

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

@@ -204,20 +204,15 @@ function($scope, $attrs, $ionicSideMenuDelegate, $ionicPlatform, $ionicBody, $io
 
     self.content.setTranslateX(amount);
 
-    if (amount >= 0) {
-      leftShowing = true;
-      rightShowing = false;
-
-      if (amount > 0) {
-        // Push the z-index of the right menu down
-        self.right && self.right.pushDown && self.right.pushDown();
-        // Bring the z-index of the left menu up
-        self.left && self.left.bringUp && self.left.bringUp();
-      }
+    leftShowing = amount > 0;
+    rightShowing = amount < 0;
+
+    if (amount > 0) {
+      // Push the z-index of the right menu down
+      self.right && self.right.pushDown && self.right.pushDown();
+      // Bring the z-index of the left menu up
+      self.left && self.left.bringUp && self.left.bringUp();
     } else {
-      rightShowing = true;
-      leftShowing = false;
-
       // Bring the z-index of the right menu up
       self.right && self.right.bringUp && self.right.bringUp();
       // Push the z-index of the left menu down