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

<script>
'use strict';
window.Chat = window.Chat || {};
Chat.FileSelectionBehavior = {
    notifyFilesSelection: function(files) {
        if(!files){
            console.log('no files selected...');
            return;
        }
        for (var i = 0; i < files.length; i++) {
            var file = files[i];
            var reader = new FileReader();
            reader.onload = function(e2) {
                // finished reading file data.
                console.log('file dropped');
                this.fire('file-selected', {
                    dataURI: e2.target.result,
                    name: file.name
                });
            }.bind(this);
            reader.readAsDataURL(file); // start reading the file data.
        }
    }
};
</script>