snapdrop/app/elements/file-sharing/file-selection-behavior.html

<script>
'use strict';
window.Snapdrop = window.Snapdrop || {};
Snapdrop.FileSelectionBehavior = {
    notifyFilesSelection: function(files) {
        if (!files) {
            console.log('no files selected...');
            return;
        }
        this._fileSelected(files[0]); //single select
    },
    _fileSelected: function(file) {
        if (file) {
            this.fire('file-selected', {
                file: file,
                name: file.name
            });
        }
    }
};
</script>