dat.gui/elements/controller-string/controller-string.html

<link rel="import" href="../controller-base/controller-base.html">

<script src="controller-string.js"></script>

<polymer-element 
    name="controller-string" 
    extends="controller-base"
    >

<template>

<link rel="stylesheet" href="../shared/input.css">
<link rel="stylesheet" href="controller-string.css">

<input id="input" type="text" value="{{ value }}" 
    on-click="{{ click }}"
    on-keydown="{{ keydown }}">

</template>

</polymer-element>