frontend/src/components/Discussion/WriteNewComment.vue

<template>
  <div class="write-new-comment">
    <label>
      <input type="text" v-model="title" :placeholder="placeholder || '讨论主题'" maxlength="100">
    </label>
    <label>
      <textarea v-model="content" placeholder="在此填写详细内容"></textarea>
    </label>
    <icon-button class="send-button" theme="green" @click="handleSubmitComment" :size="44">send</icon-button>
  </div>
</template>

<script>
import IconButton from '@/components/Basic/IconButton'

export default {
  props: ['placeholder'],
  components: { IconButton },
  data () {
    return {
      title: '',
      content: ''
    }
  },
  methods: {
    handleSubmitComment () {
      if (!(this.title && this.content)) {
        this.$setInfoMessage('主题和内容均需要填写')
        return
      }
      this.$emit('comment-submit', { title: this.title, content: this.content })
    },
    resetContent () {
      this.title = ''
      this.content = ''
    }
  }
}
</script>

<style lang="scss" scoped>
@import '~@/style/theme.scss';

.write-new-comment {
  position: relative;
}

input, textarea {
  font-weight: bold;
  box-sizing: border-box;
  font-size: 16px;
  color: #3a4a5a;
  background: white;
  border-radius: 8px;
  border: none;
  outline: none;
  width: 100%;
  height: 48px;
  line-height: 2;
  padding: 0 12px 0 12px;
  transition: .2s;
  &:hover {
    background: $input-background-color;
  }
  &::placeholder {
    color: #9aaaba;
  }
}

input {
  border-radius: 8px 8px 0 0;
  border: 1px solid #eaedef;
}

textarea {
  border-radius: 0 0 8px 8px;
  border: 1px solid #eaedef;
  border-top: none;
  min-height: 96px;
  height: 100%;
  resize: none;
  padding-bottom: 20px;
}

.send-button {
  position: absolute;
  bottom: -10%;
  right: 16px;
  background: white;

  &:hover {
    background: lighten($theme-green-light, 2);
  }
}
</style>