<template>
  <span
    v-bind="$attrs"
    :aria-hidden="title ? null : true"
    :aria-label="title"
    class="material-design-icon signal-icon"
    role="img"
    @click="$emit('click', $event)"
  >
    <svg
      :fill="fillColor"
      class="material-design-icon__svg"
      :width="size"
      :height="size"
      viewBox="0 0 24 24"
    >
      <path d="M3,21H6V18H3M8,21H11V14H8M13,21H16V9H13M18,21H21V3H18V21Z">
        <title v-if="title">{{ title }}</title>
      </path>
    </svg>
  </span>
</template>

<script>
export default {
  name: 'SignalIcon',
  props: {
    title: {
      type: String,
      default: null
    },
    fillColor: {
      type: String,
      default: 'currentColor'
    },
    size: {
      type: Number,
      default: 24
    }
  },
  emits: [ 'click' ]
};
</script>