[Tree] Begin separating out TreeView

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

@@ -22,39 +22,19 @@
 /*global define*/
 
 define([
-    'text!../../res/templates/subtree.html'
-], function (subtreeTemplate) {
-    function MCTTreeController($scope, $element) {
-        var ul = elem.filter('ul'),
+    'text!../../res/templates/subtree.html',
+    'text!../../res/templates/tree/node.html'
+], function (subtreeTemplate, nodeTemplate) {
+    function MCTTreeController($scope, $element, $compile) {
+        var ul = $element.filter('ul'),
+            makeNode = $compile(nodeTemplate),
             activeObject,
             unlisten;
 
-        function addNodes(domainObjects) {
-            domainObjects.forEach(function (addNode));
-        }
 
-        function loadComposition(domainObject) {
-            activeObject = domainObject;
-            ul.empty();
-            if (domainObject.hasCapability('composition')) {
-                // TODO: Add pending indicator
-                domainObject.useCapability('composition')
-                    .then(addNodes);
-            }
-        }
 
-        function changeObject(domainObject) {
-            if (unlisten) {
-                unlisten();
-            }
 
-            unlisten = domainObject.getCapability('mutation')
-                .listen(loadComposition);
-
-            loadComposition(domainObject);
-        }
-
-        scope.$watch('mctObject', changeObject);
+        $scope.$watch('mctObject', changeObject);
     }
 
     function MCTTree() {
@@ -63,11 +43,12 @@ define([
             controller: [
                 '$scope',
                 '$element',
+                '$compile',
                 MCTTreeController
             ],
             require: [ "mctTree" ],
             scope: { mctObject: "=" },
-            template: subtreeTemplate
+            template: ""
         };
     }
 

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

@@ -0,0 +1,98 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2014-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define*/
+
+define([
+    'angular'
+], function (angular, TreeNodeView) {
+    'use strict';
+
+    var $ = angular.element.bind(angular);
+
+    function TreeView() {
+        this.ul = $('<ul>');
+        this.ul.addClass('tree');
+        this.nodeViews = [];
+    }
+
+    TreeView.prototype.setSize = function (sz) {
+        var nodeView;
+
+        while (this.nodeViews.length < sz) {
+            nodeView = new TreeNodeView();
+            this.nodeViews.push(nodeView);
+            this.ul.append($(nodeView.elements()));
+        }
+
+        while (this.nodeViews.length > sz) {
+            nodeView = this.nodeViews.pop();
+            $(nodeView.elements()).remove();
+        }
+    };
+
+    TreeView.prototype.loadComposition = function (domainObject) {
+        var self = this;
+
+        function addNode(domainObject, index) {
+            self.nodeViews[index].model(domainObject);
+        }
+
+        function addNodes(domainObjects) {
+            if (domainObject === self.activeObject) {
+                self.setSize(domainObjects.length);
+                domainObjects.forEach(addNode);
+            }
+        }
+
+        // TODO: Add pending indicator
+        domainObject.useCapability('composition')
+            .then(addNodes);
+    };
+
+    TreeView.prototype.model = function (domainObject) {
+        if (this.unlisten) {
+            this.unlisten();
+        }
+
+        this.activeObject = domainObject;
+        this.ul.empty();
+
+        if (domainObject && domainObject.hasCapability('composition')) {
+            this.unlisten = domainObject.getCapability('mutation')
+                .listen(this.loadComposition.bind(this));
+            this.loadComposition(domainObject);
+        } else {
+            this.setSize(0);
+        }
+    };
+
+    /**
+     *
+     * @returns {HTMLElement[]}
+     */
+    TreeView.prototype.elements = function () {
+        return this.ul;
+    };
+
+
+    return TreeView;
+});