feat(View): implement ProtoView.instantiate

modules/facade/src/collection.dart

@@ -22,6 +22,7 @@ class ListWrapper {
   static void set(m, k, v) { m[k] = v; }
   static contains(m, k) => m.containsKey(k);
   static map(list, fn) => list.map(fn).toList();
+  static filter(List list, fn) => list.where(fn).toList();
   static find(List list, fn) => list.firstWhere(fn, orElse:() => null);
   static any(List list, fn) => list.any(fn);
   static forEach(list, fn) {

modules/facade/src/collection.es6

@@ -47,6 +47,9 @@ export class ListWrapper {
     }
     return null;
   }
+  static filter(array, pred:Function) {
+    return array.filter(pred);
+  }
   static any(list:List, pred:Function) {
     for (var i = 0 ; i < list.length; ++i) {
       if (pred(list[i])) return true;

modules/facade/src/dom.dart

@@ -9,6 +9,9 @@ class DOM {
   static query(selector) {
     return document.querySelector(selector);
   }
+  static ElementList querySelectorAll(el, String selector) {
+    return el.querySelectorAll(selector);
+  }
   static on(element, event, callback) {
     element.addEventListener(event, callback);
   }
@@ -18,6 +21,12 @@ class DOM {
   static setInnerHTML(el, value) {
     el.innerHtml = value;
   }
+  static Node firstChild(el) {
+    return el.firstChild;
+  }
+  static List<Node> childNodes(el) {
+    return el.childNodes;
+  }
   static setText(Text text, String value) {
     text.text = value;
   }

modules/facade/src/dom.es6

@@ -1,23 +1,34 @@
 export var DocumentFragment = window.DocumentFragment;
 export var Node = window.Node;
+export var NodeList = window.NodeList;
 export var Text = window.Text;
 export var Element = window.HTMLElement;
 export var TemplateElement = window.HTMLTemplateElement;
+import {List} from 'facade/collection';
 
 export class DOM {
   static query(selector) {
     return document.querySelector(selector);
   }
+  static querySelectorAll(el, selector:string):NodeList {
+    return el.querySelectorAll(selector);
+  }
   static on(el, evt, listener) {
     el.addEventListener(evt, listener, false);
   }
   static getInnerHTML(el) {
     return el.innerHTML;
   }
+  static firstChild(el):Node {
+    return el.firstChild;
+  }
+  static childNodes(el):NodeList {
+    return el.childNodes;
+  }
   static setInnerHTML(el, value) {
     el.innerHTML = value;
   }
-  static setText(text:Text, value:String) {
+  static setText(text:Text, value:string) {
     text.nodeValue = value;
   }
   static createTemplate(html) {