fix(anchorScroll): find offset of nested elements correctly

Closes #618

js/utils/dom.js

@@ -17,16 +17,10 @@
      * until we are at the direct child of parentEl
      * use-case: find scroll offset of any element within a scroll container
      */
-    getPositionInParent: function(el, parentEl) {
-      var left = 0, top = 0;
-      while (el && el !== parentEl) {
-        left += el.offsetLeft;
-        top += el.offsetTop;
-        el = el.parentNode;
-      }
+    getPositionInParent: function(el) {
       return {
-        left: left,
-        top: top
+        left: el.offsetLeft,
+        top: el.offsetTop
       };
     },
 

test/js/utils/dom.js

@@ -1,40 +0,0 @@
-
-describe('js/utils/dom', function() {
-
-  describe('getPositionInParent', function() {
-    it('should return 0,0 if el===parentEl', function() {
-      var el = {};
-      expect(ionic.DomUtil.getPositionInParent(el, el)).toEqual({
-        left: 0,
-        top: 0
-      });
-    });
-    it('should return 0,0 if el is null', function() {
-      expect(ionic.DomUtil.getPositionInParent(null, null)).toEqual({
-        left: 0,
-        top: 0
-      });
-    });
-    it('should return element offset{Top,Left} of el if el is parent\'s child', function() {
-      var parent = {};
-      var el = {parentNode: parent, offsetLeft: 3, offsetTop: 2};
-      expect(ionic.DomUtil.getPositionInParent(el, parent)).toEqual({
-        left: 3,
-        top: 2
-      });
-    });
-    it('should return added element offset{Top,Left} of all children up to parent', function() {
-      var parent = {};
-      var child1 = {parentNode: parent, offsetLeft: 5, offsetTop: 6};
-      var child2 = {parentNode: child1, offsetLeft: 10, offsetTop: 11};
-      expect(ionic.DomUtil.getPositionInParent(child1, parent)).toEqual({
-        left: 5,
-        top: 6
-      });
-      expect(ionic.DomUtil.getPositionInParent(child2, parent)).toEqual({
-        left: 15,
-        top: 17
-      });
-    });
-  });
-});

test/js/utils/dom.unit.js

@@ -0,0 +1,10 @@
+
+describe('js/utils/dom', function() {
+
+  describe('getPositionInParent', function() {
+    it('should return el.{offsetLeft,offsetTop}', function() {
+      var el = { offsetLeft: 3, offsetTop: 4 };
+      expect(ionic.DomUtil.getPositionInParent(el)).toEqual({ left: 3, top: 4 });
+    });
+  });
+});