CEP: Drag and Drop between Premiere and Extension

[avartation]

I want the user to be able to drag video items from Media Browser to the extension panel. And here is my ondrop callback of the html element:

function drop(ev) {
     ev.preventDefault();
     var data = ev.dataTransfer;
     alert('data.files.length : '+data.files.length);
     alert('data.items.length : '+data.items.length);
}

Result:

data.files.length : 0
data.items.length : 0

Question:

How can I know which video item was draged ? Is it possible at all ?

[Bruce Bullis · Accepted solution]

Dragging one or more file paths FROM a panel, TO PPro is supported; dragging from PPro to a panel is not supported. 

[masonm16462627]

I have develop the custom plugin. How to drag the file from the panel to PPro timeline?