[SOLVED] Split FileList into individual file input elements

Split FileList into individual file input elements

Is it possible to split a FileList instance (from a drop event, event.dataTransfer.fileList), and assing each file within it to an individual <input type="file" ... /> element?

For example, to assign all files (1 or more...) from a drop event to an input element fileInputElement, you would:

function dropHandler(event) {
  fileInputElement.files = event.dataTransfer.files;
}

I'm looking for something like:

function dropHandler(event) {
  // assume fileEls is an array of input[type=file] elements
  for (var i = 0; i < event.dataTransfer.files.length; i++) {

    // yep, FileList.push doesn't exist..
    fileEls[i].files.push(event.dataTransfer.files.item(i));

    // and this (imagined) FileList constructor is not available...
    fileEls[i].files = new FileList([event.dataTransfer.files.item(i)]);
  }
}

A signs point to nope, can't do it...

Solution

You can create a new FileList through DataTransfer

function dropHandler(event) {
  // assume fileEls is an array of input[type=file] elements
  for (var i = 0; i < event.dataTransfer.files.length; i++) {

    // Create a new DataTransfer
    var dataTransfer = new DataTransfer();

    // Add the items
    dataTransfer.items.add(event.dataTransfer.files.item(i));

    // Get the FileList
    fileEls[i].files = dataTransfer.files;

  }
}