refactor: unify parentNode access

The logic for setting/getting template parent is delegated to the ViewBase class.

Author: sis0k0

Diff for: nativescript-angular/directives/action-bar.ts

@@ -34,10 +34,10 @@ const actionBarMeta: ViewClassMeta = {
             return;
         } else if (isNavigationButton(child)) {
             parent.navigationButton = child;
-            child.templateParent = parent;
+            child.parentNode = parent;
         } else if (isActionItem(child)) {
             addActionItem(parent, child, next);
-            child.templateParent = parent;
+            child.parentNode = parent;
         } else if (isView(child)) {
             parent.titleView = child;
         }
@@ -50,10 +50,10 @@ const actionBarMeta: ViewClassMeta = {
                 parent.navigationButton = null;
             }
 
-            child.templateParent = null;
+            child.parentNode = null;
         } else if (isActionItem(child)) {
             parent.actionItems.removeItem(child);
-            child.templateParent = null;
+            child.parentNode = null;
         } else if (isView(child) && parent.titleView && parent.titleView === child) {
             parent.titleView = null;
         }

Diff for: nativescript-angular/element-registry.ts

@@ -7,7 +7,7 @@ export interface ViewExtensions {
     meta: ViewClassMeta;
     nodeType: number;
     nodeName: string;
-    templateParent: NgView;
+    parentNode: NgView;
     nextSibling: NgView;
     firstChild: NgView;
     lastChild: NgView;
@@ -22,7 +22,7 @@ export abstract class InvisibleNode extends View implements NgView {
     meta: { skipAddToDom: boolean };
     nodeType: number;
     nodeName: string;
-    templateParent: NgView;
+    parentNode: NgView;
     nextSibling: NgView;
     firstChild: NgView;
     lastChild: NgView;

Diff for: nativescript-angular/renderer.ts

@@ -116,7 +116,7 @@ export class NativeScriptRenderer extends Renderer2 {
     @profile
     parentNode(node: NgView): any {
         traceLog(`NativeScriptRenderer.parentNode for node: ${node}`);
-        return node.parent || node.templateParent;
+        return node.parentNode;
     }
 
     @profile

Diff for: nativescript-angular/view-util.ts

@@ -69,7 +69,7 @@ export class ViewUtil {
         this.addToQueue(extendedParent, extendedChild, previous, next);
 
         if (isInvisibleNode(child)) {
-            extendedChild.templateParent = extendedParent;
+            extendedChild.parentNode = extendedParent;
         }
 
         if (!isDetachedElement(child)) {