<template>
  <img v-lazy="currentSrc" :alt="alt" v-if="!refresh" />
</template>

<script>
export default {
  name: "ImgSize",
  props: {
    src: String,
    width: Number,
    height: Number,
    alt: String
  },
  data() {
    return {
      refresh: false
    };
  },
  watch: {
    src() {
      this.refresh = true;
      this.$nextTick(() => {
        this.refresh = false;
      });
    }
  },
  computed: {
    currentSrc() {
      return (this.src || "")
        .replace("http://", "//")
        .replace("{width}", this.width)
        .replace("{height}", this.height);
    }
  }
};
</script>