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/**
 * Image upload transformations plugin js
 *
 * @package PhpMyAdmin
 */

AJAX.registerOnload('transformations/image_upload.js', function () {
  // Change thumbnail when image file is selected
  // through file upload dialog
  $('input.image-upload').on('change', function () {
    if (this.files && this.files[0]) {
      var reader = new FileReader();
      var $input = $(this);
      reader.onload = function (e) {
        $input.prevAll('img').attr('src', e.target.result);
      };
      reader.readAsDataURL(this.files[0]);
    }
  });
});

/**
 * Unbind all event handlers before tearing down a page
 */
AJAX.registerTeardown('transformations/image_upload.js', function () {
  $('input.image-upload').off('change');
});