From e55ba50d15f7753f200400a24ce21c7c8c032d5c Mon Sep 17 00:00:00 2001
From: Pavel Reznikov <pashka.reznikov@gmail.com>
Date: Thu, 26 Feb 2015 21:10:19 -0800
Subject: [PATCH] knockout demo

---
 demo/knockout.html | 73 +++++++++++++++++++++++++---------------------
 1 file changed, 40 insertions(+), 33 deletions(-)

diff --git a/demo/knockout.html b/demo/knockout.html
index e3eca6c..9a92c6d 100644
--- a/demo/knockout.html
+++ b/demo/knockout.html
@@ -7,26 +7,15 @@
     <title>Knockout.js demo</title>
 
     <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
-    <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/gridstack.js/0.2.2/gridstack.min.js"/>
-
     <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/font-awesome/4.2.0/css/font-awesome.min.css"/>
-    <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/gridstack.js/0.2.1/gridstack.min.css"/>
-
-    <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
-    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
-    <!--[if lt IE 9]>
-    <script src="//oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
-    <script src="//oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
-    <![endif]-->
+    <link rel="stylesheet" href="../gridstack.css"/>
 
     <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
     <script src="//cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.0/jquery-ui.js"></script>
-    <script src="//code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
     <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
     <script src="//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.7.0/underscore-min.js"></script>
     <script src="//cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/knockout.mapping/2.4.1/knockout.mapping.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/gridstack.js/0.2.2/gridstack.min.js"></script>
+    <script src="../gridstack.js"></script>
 
     <style type="text/css">
         .grid-stack {
@@ -44,6 +33,12 @@
     <div class="container-fluid">
         <h1>knockout.js Demo</h1>
 
+        <div>
+            <button data-bind="click: add_new_widget">Add new widget</button>
+        </div>
+
+        <br>
+
         <div data-bind="component: {name: 'dashboard-grid', params: $data}"></div>
     </div>
 
@@ -58,22 +53,17 @@
                         this.widgets = controller.widgets;
 
                         this.afterAddWidget = function (items) {
-                            _.each(items, function (item) {
-                                item = $(item);
-                                if (item.data('_gridstack_node') || item[0].nodeType != 1)
-                                    return;
+                            if (grid == null) {
+                                grid = $(componentInfo.element).find('.grid-stack').gridstack({
+                                    auto: false
+                                }).data('gridstack');
+                            }
 
-                                if (grid == null) {
-                                    grid = $(componentInfo.element).find('.grid-stack').gridstack({
-                                        auto: false
-                                    }).data('gridstack');
-                                }
-
-                                grid.add_widget(item);
-                                ko.utils.domNodeDisposal.addDisposeCallback(item[0], function () {
-                                    grid.remove_widget(item);
-                                });
-                            }, this);
+                            var item = _.find(items, function (i) { return i.nodeType == 1 });
+                            grid.add_widget(item);
+                            ko.utils.domNodeDisposal.addDisposeCallback(item, function () {
+                                grid.remove_widget(item);
+                            });
                         };
                     };
 
@@ -83,16 +73,32 @@
             template:
                 [
                     '<div class="grid-stack" data-bind="foreach: {data: widgets, afterRender: afterAddWidget}">',
-                    '   <div class="grid-stack-item" data-bind="attr: {\'data-gs-x\': $data.x, \'data-gs-y\': $data.y, \'data-gs-width\': $data.width, \'data-gs-height\': $data.height}">',
-                    '       <div class="grid-stack-item-content" data-bind="text: $index"></div>',
+                    '   <div class="grid-stack-item" data-bind="attr: {\'data-gs-x\': $data.x, \'data-gs-y\': $data.y, \'data-gs-width\': $data.width, \'data-gs-height\': $data.height, \'data-gs-auto-position\': $data.auto_position}">',
+                    '       <div class="grid-stack-item-content"><button data-bind="click: $root.delete_widget">Delete me</button></div>',
                     '   </div>',
-                    '</div>'
-                ].join('\n')
+                    '</div> '
+                ].join('')
         });
 
         $(function () {
             var Controller = function (widgets) {
+                var self = this;
+
                 this.widgets = ko.observableArray(widgets);
+
+                this.add_new_widget = function () {
+                    this.widgets.push({
+                        x: 0,
+                        y: 0,
+                        width: Math.floor(1 + 3 * Math.random()),
+                        height: Math.floor(1 + 3 * Math.random()),
+                        auto_position: true
+                    });
+                };
+
+                this.delete_widget = function (item) {
+                    self.widgets.remove(item);
+                };
             };
 
             var widgets = [
@@ -102,7 +108,8 @@
                 {x: 1, y: 2, width: 4, height: 2}
             ];
 
-            ko.applyBindings(new Controller(widgets));
+            var controller = new Controller(widgets);
+            ko.applyBindings(controller);
         });
     </script>
 </body>