feat(menu): better scroll restrict. Fixes #4869

Author: mlynch

js/angular/controller/scrollController.js

@@ -184,6 +184,7 @@ function($scope,
   };
 
   self.freezeScroll = scrollView.freeze;
+  self.freezeScrollShut = scrollView.freezeShut;
 
   self.freezeAllScrolls = function(shouldFreeze) {
     for (var i = 0; i < $ionicScrollDelegate._instances.length; i++) {

js/angular/controller/sideMenuController.js

@@ -157,9 +157,10 @@ function($scope, $attrs, $ionicSideMenuDelegate, $ionicPlatform, $ionicBody, $io
     // equal 0, otherwise remove the class from the body element
     $ionicBody.enableClass((percentage !== 0), 'menu-open');
 
-    freezeAllScrolls(false);
+    self.content.setCanScroll(percentage == 0);
   };
 
+  /*
   function freezeAllScrolls(shouldFreeze) {
     if (shouldFreeze && !self.isScrollFreeze) {
       $ionicScrollDelegate.freezeAllScrolls(shouldFreeze);
@@ -169,6 +170,7 @@ function($scope, $attrs, $ionicSideMenuDelegate, $ionicPlatform, $ionicBody, $io
     }
     self.isScrollFreeze = shouldFreeze;
   }
+  */
 
   /**
    * Open the menu the given pixel amount.
@@ -320,8 +322,6 @@ 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) {
@@ -359,7 +359,7 @@ function($scope, $attrs, $ionicSideMenuDelegate, $ionicPlatform, $ionicBody, $io
 
     if (isDragging) {
       self.openAmount(offsetX + (lastX - startX));
-      freezeAllScrolls(true);
+      self.content.setCanScroll(false);
     }
   };
 
@@ -443,7 +443,7 @@ function($scope, $attrs, $ionicSideMenuDelegate, $ionicPlatform, $ionicBody, $io
     }
 
     // ensure scrolls are unfrozen
-    freezeAllScrolls(false);
+    self.content.setCanScroll(true);
   });
 
   self.initialize({

js/angular/directive/content.js

@@ -159,6 +159,8 @@ function($timeout, $controller, $ionicBind, $ionicConfig) {
             scrollViewOptions: scrollViewOptions
           });
 
+          $scope.scrollCtrl = scrollCtrl;
+
           $scope.$on('$destroy', function() {
             if (scrollViewOptions) {
               scrollViewOptions.scrollingComplete = noop;

js/angular/directive/sideMenuContent.js

@@ -133,6 +133,22 @@ function($timeout, $ionicGesture, $window) {
           element: element[0],
           onDrag: function() {},
           endDrag: function() {},
+          setCanScroll: function(canScroll) {
+            var c = $element[0].querySelector('.scroll');
+
+            if(!c) {
+              return;
+            }
+
+            var content = angular.element(c.parentElement);
+            if(!content) {
+              return;
+            }
+
+            // freeze our scroll container if we have one
+            var scrollScope = content.scope();
+            scrollScope.scrollCtrl && scrollScope.scrollCtrl.freezeScrollShut(!canScroll);
+          },
           getTranslateX: function() {
             return $scope.sideMenuContentTranslateX || 0;
           },

js/utils/poly.js

@@ -6,6 +6,8 @@
   ionic.CSS.TRANSITION = [];
   ionic.CSS.TRANSFORM = [];
 
+  ionic.EVENTS = {};
+
   (function() {
 
     // transform
@@ -41,6 +43,29 @@
     ionic.CSS.TRANSITIONEND = (isWebkit ? 'webkitTransitionEnd ' : '') + 'transitionend';
   })();
 
+  (function() {
+      var touchStartEvent = 'touchstart'
+      var touchMoveEvent = 'touchmove'
+      var touchEndEvent = 'touchend'
+      var touchCancelEvent = 'touchcancel'
+      if (window.navigator.pointerEnabled) {
+        touchStartEvent = 'pointerdown';
+        touchMoveEvent = 'pointermove';
+        touchEndEvent = 'pointerup';
+        touchCancelEvent = 'pointercancel';
+      } else if (window.navigator.msPointerEnabled) {
+        touchStartEvent = 'MSPointerDown';
+        touchMoveEvent = 'MSPointerMove';
+        touchEndEvent = 'MSPointerUp';
+        touchCancelEvent = 'MSPointerCancel';
+      }
+
+      ionic.EVENTS.touchstart = touchStartEvent;
+      ionic.EVENTS.touchmove = touchMoveEvent;
+      ionic.EVENTS.touchend = touchEndEvent;
+      ionic.EVENTS.touchcancel = touchCancelEvent;
+  })();
+
   // classList polyfill for them older Androids
   // https://gist.github.com/devongovett/1381839
   if (!("classList" in document.documentElement) && Object.defineProperty && typeof HTMLElement !== 'undefined') {

js/views/scrollView.js

@@ -411,6 +411,9 @@ ionic.views.Scroll = ionic.views.View.inherit({
       return self.options.freeze;
     };
 
+    // We can just use the standard freeze pop in our mouth
+    self.freezeShut = self.freeze;
+
     self.setScrollStart = function() {
       ionic.scroll.isScrolling = Math.abs(ionic.scroll.lastTop - self.__scrollTop) > 1;
       clearTimeout(self.scrollTimer);

js/views/scrollViewNative.js

@@ -9,6 +9,8 @@
       var self = this;
       self.__container = self.el = options.el;
       self.__content = options.el.firstElementChild;
+      // Whether scrolling is frozen or not
+      self.__frozen = false;
       self.isNative = true;
 
       self.__scrollTop = self.el.scrollTop;
@@ -60,7 +62,13 @@
         }, 80);
       };
 
-      self.freeze = NOOP;
+      self.freeze = function(shouldFreeze) {
+        self.__frozen = shouldFreeze;
+      };
+      // A more powerful freeze pop that dominates all other freeze pops
+      self.freezeShut = function(shouldFreezeShut) {
+        self.__frozenShut = shouldFreezeShut;
+      };
 
       self.__initEventHandlers();
     },
@@ -442,12 +450,23 @@
         self.resize();
       };
 
+      self.handleTouchMove = function(e) {
+        if(self.__frozen || self.__frozenShut) {
+          e.preventDefault();
+          e.stopPropagation();
+          return false;
+        }
+      }
+
       container.addEventListener('scroll', self.onScroll);
 
       //Broadcasted when keyboard is shown on some platforms.
       //See js/utils/keyboard.js
       container.addEventListener('scrollChildIntoView', self.scrollChildIntoView);
 
+      container.addEventListener(ionic.EVENTS.touchstart, self.handleTouchMove);
+      container.addEventListener(ionic.EVENTS.touchmove, self.handleTouchMove);
+
       // Listen on document because container may not have had the last
       // keyboardActiveElement, for example after closing a modal with a focused
       // input and returning to a previously resized scroll view in an ion-content.
@@ -466,6 +485,9 @@
       container.removeEventListener('scrollChildIntoView', self.scrollChildIntoView);
       container.removeEventListener('resetScrollView', self.resetScrollView);
 
+      container.removeEventListener(ionic.EVENTS.touchstart, self.handleTouchMove);
+      container.removeEventListener(ionic.EVENTS.touchmove, self.handleTouchMove);
+
       ionic.tap.removeClonedInputs(container, self);
 
       delete self.__container;

scss/_menu.scss

@@ -35,7 +35,12 @@
 .menu-open .menu-content .pane,
 .menu-open .menu-content .scroll-content {
   pointer-events: none;
-  //overflow: hidden;
+}
+.menu-open .menu-content .scroll-content .scroll {
+  pointer-events: none;
+}
+.menu-open .menu-content .scroll-content:not(.overflow-scroll) {
+  overflow: hidden;
 }
 
 .grade-b .menu-content,

test/html/sideMenu.html

@@ -28,6 +28,9 @@ <h1>Content</h1>
                 Sup
                 <ion-option-button class="button-positive">Hello</ion-option-button>
               </ion-item>
+              <a href="#" class="item" ng-repeat="item in list">
+                {{item.text}}
+              </a>
             </ion-list>
           </ion-content>
         </ion-side-menu-content>