Merge pull request #434 from NativeScript/nnikolov/ListViewBindingContextIssue

BindingContext set two times on adding item to ListView. Fixed issue #410.

ui/core/view-common.ts

@@ -829,9 +829,7 @@ export class View extends proxy.ProxyObject implements definition.View {
      * Method is intended to be overridden by inheritors and used as "protected"
      */
     public _addViewCore(view: View) {
-        view._setValue(bindable.Bindable.bindingContextProperty, this.bindingContext, dependencyObservable.ValueSource.Inherited);
-
-        view._inheritProperties(this);
+        this._propagateInheritableProperties(view);
 
         view.style._inheritStyleProperties();
 
@@ -845,7 +843,11 @@ export class View extends proxy.ProxyObject implements definition.View {
         }
     }
 
-    private _inheritProperties(parentView: View) {
+    public _propagateInheritableProperties(view: View) {
+        view._inheritProperties(this);
+    }
+
+    public _inheritProperties(parentView: View) {
         var that = this;
         var inheritablePropertySetCallback = function (property: dependencyObservable.Property) {
             if (property instanceof styling.Property) {

ui/core/view.d.ts

@@ -409,6 +409,8 @@ declare module "ui/core/view" {
         isLoaded: boolean;
 
         _addView(view: View);
+        _propagateInheritableProperties(view: View)
+        _inheritProperties(parentView: View)
         _removeView(view: View);
         _context: android.content.Context;
 

ui/list-view/list-view-common.ts

@@ -114,6 +114,7 @@ export class ListView extends view.View implements definition.ListView {
     public _prepareItem(item: view.View, index: number) {
         if (item) {
             item.bindingContext = this._getDataItem(index);
+            item._inheritProperties(this);
         }
     }
 
@@ -145,4 +146,8 @@ export class ListView extends view.View implements definition.ListView {
     private _onItemsChanged(args: observable.EventData) {
         this.refresh();
     }
+
+    public _propagateInheritableProperties(view: view.View) {
+        // do not get binding context from parent when adding items, since the binding context of the items will be different.
+    }
 }