From cbcc9dcadaf62b3b0aef380f022bf6c365785627 Mon Sep 17 00:00:00 2001
From: Eric Guzman
Date: Thu, 2 Feb 2012 10:36:05 -0800
Subject: Tree Controller - Initial add

---
 js/controllers/tree-controller.js | 219 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 219 insertions(+)
 create mode 100644 js/controllers/tree-controller.js

diff --git a/js/controllers/tree-controller.js b/js/controllers/tree-controller.js
new file mode 100644
index 00000000..45e4c4ba
--- /dev/null
+++ b/js/controllers/tree-controller.js
@@ -0,0 +1,219 @@
+/* <copyright>
+ This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
+ No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
+ (c) Copyright 2011 Motorola Mobility, Inc.  All Rights Reserved.
+ </copyright> */
+/**
+ @module montage/ui/controller/tree-controller
+ @requires montage/core/core
+ @requires montage/ui/controller/object-controller
+ @requires montage/core/event/mutable-event
+ */
+var Montage = require("montage").Montage,
+    ObjectController = require("montage/ui/controller/object-controller").ObjectController,
+    ArrayController = require("montage/ui/controller/array-controller").ArrayController,
+    MutableEvent = require("montage/core/event/mutable-event").MutableEvent;
+/**
+    TODO: Write description like the array controllers: The ArrayController helps with organizing a hierarchical
+    collection of objects, and managing user selection within that collection.
+    You can assign a TreeController instance as the <code>contentProvider</code> property for a TreeView object.
+    @class module:montage/ui/controller/tree-controller.TreeController
+    @classdesc
+    @extends module:montage/ui/controller/object-controller.ObjectController
+*/
+var TreeController = exports.TreeController = Montage.create(ObjectController, /** @lends module:montage/ui/controller/tree-controller.TreeController# */ {
+
+    rootKey : {
+        value: null
+    },
+
+    branchKey : {
+        value: 'children'
+    },
+
+    _root : {
+        value : null
+    },
+    root : {
+        get: function() {
+            return this._root;
+        },
+        set: function(value) {
+            this._root = value;
+
+            this.initArrayControllers();
+        }
+    },
+
+    rootController: {
+        value: null
+    },
+
+    initArrayControllers : {
+        value: function() {
+            var self = this;
+
+            ///// Declare function to initialize controller for each node
+            ///// that is a branch
+
+            function initController(array, depth) {
+                var controller = Montage.create(ArrayController, {
+                    content            : { value: array },
+                    delegate           : { value: self },
+                    isSelectionEnabled : { value: true }});
+
+                if(depth === 0) {
+                    self.rootController = controller;
+                }
+
+                self.branchControllers.push({
+                    depth      : depth,
+                    controller : controller
+
+                });
+            }
+
+            ///// Recursive function that finds all branch nodes and initializes
+            ///// an array controller
+
+            function walk(node, init, depth) {
+                var children = node[self.branchKey];
+
+                if(children) {
+                    //init(children, depth);
+
+                    children.forEach(function(child) {
+                        walk(child, init, ++depth);
+                    });
+
+                    node['treeNodeType'] = 'branch';
+                } else {
+                    node['treeNodeType'] = 'leaf';
+                }
+            }
+
+            walk(this._root, initController, 0);
+
+        }
+    },
+
+    /**
+        @private
+     */
+    _selectedIndexes: {
+        value: null,
+        enumerable: false
+    },
+
+   /**
+        Description TODO
+        @type {Function}
+        @default null
+    */
+    selectedIndexes: {
+        get: function() {
+
+        },
+        set: function(value) {
+
+        }
+    },
+
+    lazyLoad : {
+        value: false
+    },
+
+    branchControllers: {
+        value: []
+    },
+
+    addBranchController : {
+        value: function(controller) {
+            if(this.delegate) {
+                controller.delegate = this.delegate;
+            }
+
+            this.branchControllers.push(controller);
+        }
+    },
+
+    /**
+     @private
+     */
+    _content: {
+        enumerable: false,
+        value: null
+    },
+    /**
+        The content managed by the TreeController.
+        @type {Function}
+        @default {String} null
+    */
+    content: {
+        get: function() {
+            return this._content;
+        },
+        set: function(value) {
+            if (this._content === value) {
+                return;
+            }
+
+            this._content = value;
+
+            //TODO for right now assume that any content change invalidates the selection completely; we'll need to address this of course
+            this.selectedObjects = null;
+
+            if (this.rootKey) {
+                if (value[this.rootKey]) {
+                    this.root = value[this.rootKey];
+                } else {
+                    console.log('No root key found in content data');
+                }
+            } else {
+                this.root = value;
+            }
+
+
+        }
+    },
+
+    addObjects : {
+        value: function() {
+
+            var objects = Array.prototype.slice.call(arguments),
+                i,
+                objectCount = objects.length,
+                selectedContentIndexes, firstIndex;
+
+            for (i = 0; i < objectCount; i++) {
+                this.content.push(objects[i]);
+            }
+
+            if (this.selectObjectsOnAddition) {
+                selectedContentIndexes = [];
+                firstIndex = this.content.length-objectCount;
+                for (i = 0; i < objectCount; i++) {
+                    selectedContentIndexes[i] = firstIndex++;
+                }
+                this.selectedContentIndexes = selectedContentIndexes;
+                this.selectedObjects = objects;
+            }
+
+            if (this.clearFilterFunctionOnAddition) {
+                this.filterFunction = null;
+            }
+
+            if (this.automaticallyOrganizeObjects) {
+                this.organizeObjects();
+            }
+
+        }
+    },
+
+    insertChildBefore : { value : function() {} },
+
+    insertChildAfter : { value : function() {} }
+
+
+
+});
-- 
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