Polymer dom-repeat: use currentTarget to references to the item itself, not the sub-child

post-collection.html

<template is="dom-repeat" items={{postsCollection}}>
  <file-item content-type="post-folder" file-name={{item}} on-tap="clickHandle"></file-item>
</template>

<script>
clickHandle: function(e) {
  e.currentTarget refers to <file-item>
  e.target refers to the div inside <file-item>
}
<script/>

this may have a little problem with styling control when in dom-repeat.