AngularJS directives with HTML5 drag and drop -- issue with scope object - angularjs

Question

I'm fairly new to angular and I'm having a hard time wrapping my head around where the items are being pushed to. I am not sure if I am correctly setting up the functions to be used with drag/drop and if its getting bound to an older scope object and the ng-repeat isn't being updated properly. I'm thinking there is some slight issue with the way I have this setup. Any pointers or help would be much appreciated.
What should happen is when you drag a color from the Draggable container into the Droppable container it should update the text which is linked to the scope object items. I am successfully pushing an item onto the scope object but ng-repeat isn't picking it up. I am not sure if I need a watch or what to do to get it to pay attention to the newly added items.
JS Fiddle Here: http://jsfiddle.net/RV23R/
HTML CODE:
<div ng-app="my-app" ng-controller="MainController">
<div class="container">
<header><h1>Draggables</h1></header>
<section>
<div draggable="true" ng-repeat="drag_type in drag_types">{{drag_type.name}}</div>
</section>
</div>
<div class="container">
<header><h1>Drop Schtuff Here</h1></header>
<section droppable="true">
<div><span>You dragged in: </span><span ng-repeat="items in items">{{item.name}},</span></div>
</section>
</div>
ANGULAR CODE:
var module = angular.module('my-app', []);
module.directive('draggable', function () {
return {
restrict: 'A',
link: function (scope, element, attrs) {
element[0].addEventListener('dragstart', scope.handleDragStart, false);
element[0].addEventListener('dragend', scope.handleDragEnd, false);
}
}
});
module.directive('droppable', function () {
return {
restrict: 'A',
link: function (scope, element, attrs) {
element[0].addEventListener('drop', scope.handleDrop, false);
element[0].addEventListener('dragover', scope.handleDragOver, false);
}
}
});
function MainController($scope)
{
$scope.drag_types = [
{name: "Blue"},
{name: "Red"},
{name: "Green"},
];
$scope.items = [];
$scope.handleDragStart = function(e){
this.style.opacity = '0.4';
e.dataTransfer.setData('text/plain', this.innerHTML);
};
$scope.handleDragEnd = function(e){
this.style.opacity = '1.0';
};
$scope.handleDrop = function(e){
e.preventDefault();
e.stopPropagation();
var dataText = e.dataTransfer.getData('text/plain');
$scope.items.push(dataText);
console.log($scope.items);
};
$scope.handleDragOver = function (e) {
e.preventDefault(); // Necessary. Allows us to drop.
e.dataTransfer.dropEffect = 'move'; // See the section on the DataTransfer object.
return false;
};
}
CSS (if anyone cares)
.container {
width: 600px;
border: 1px solid #CCC;
box-shadow: 0 1px 5px #CCC;
border-radius: 5px;
font-family: verdana;
margin: 25px auto;
}
.container header {
background: #f1f1f1;
background-image: -webkit-linear-gradient( top, #f1f1f1, #CCC );
background-image: -ms-linear-gradient( top, #f1f1f1, #CCC );
background-image: -moz-linear-gradient( top, #f1f1f1, #CCC );
background-image: -o-linear-gradient( top, #f1f1f1, #CCC );
box-shadow: 0 1px 2px #888;
padding: 10px;
}
.container h1 {
padding: 0;
margin: 0;
font-size: 16px;
font-weight: normal;
text-shadow: 0 1px 2px white;
color: #888;
text-align: center;
}
.container section {
padding: 10px 30px;
font-size: 12px;
line-height: 175%;
color: #333;
}

Answer 1

There are a couple of typos in the fiddle, but the basic problem is that your drag events are outside an angular digest cycle. You should wrap your changes in $scope.$apply (code sample coming). This forked and bugfixed (FIDDLE) shows that when you click the button, angular shows the changes and refreshes the display with new values.
Fix: (FIDDLE)
$scope.$apply(function() {
$scope.items.push(dataText);
});
A bug you had is in this code:
<span ng-repeat="items in items">{{item.name}},</span>
This should probably be ng-repeat="item in items", also items only contains the dropped text so it is an array of strings and not the original item objects.