[Tree] Begin wiring in selection

platform/commonUI/general/res/templates/subtree.html

@@ -19,6 +19,6 @@
  this source code distribution or the Licensing information page available
  at runtime from the About dialog for additional information.
 -->
-<mct-tree mct-object="domainObject">
+<mct-tree mct-object="domainObject" mct-model="ngModel.selectedObject">
 </mct-tree>
 

platform/commonUI/general/src/directives/MCTTree.js

@@ -25,13 +25,17 @@ define([
     'angular',
     '../ui/TreeView'
 ], function (angular, TreeView) {
-    function MCTTree() {
+    function MCTTree($parse) {
-        function link(scope, element) {
+        function link(scope, element, attrs) {
-            var treeView = new TreeView();
+            var treeView = new TreeView(),
+                expr = $parse(attrs.mctModel),
+                unobserve = treeView.observe(expr.assign.bind(expr, scope));
 
             element.append(angular.element(treeView.elements()));
 
+            scope.$parent.$watch(attrs.mctModel, treeView.value.bind(treeView));
             scope.$watch('mctObject', treeView.model.bind(treeView));
+            scope.$on('$destroy', unobserve);
         }
 
         return {

platform/commonUI/general/src/ui/TreeView.js

@@ -103,6 +103,16 @@ define([
         });
     };
 
+    TreeView.prototype.observe = function (callback) {
+        callback(this.selectedObject);
+        this.callbacks.push(callback);
+        return function () {
+            this.callbacks = this.callbacks.filter(function (c) {
+                return c !== callback;
+            });
+        }.bind(this);
+    };
+
     /**
      *
      * @returns {HTMLElement[]}