gistfile1.js

collectionViewDragViewFor: function(view, dragContent) {
    // TODO [JH2] Make this an imageView 
    var content = view.getPath('selection.firstObject');
    var size = content.get('naturalSize');
    var dragLayer = view.get('layer').cloneNode(false); 
    return SC.View.design({
      parentView: view,
      layer: dragLayer,
      layout: { top: 0, left: 0, height: size.height, width: size.width },
      childViews: [
        SC.LabelView.design({
          layout: { top: 0, left: 0, height: 50, width: 150},
          value: "Test DragView"
        })
      ]
    });
  }