pinafore/routes/_components/status/StatusSpoiler.html

<div class="status-spoiler {isStatusInNotification ? 'status-in-notification' : ''} {isStatusInOwnThread ? 'status-in-own-thread' : ''}">
  <p>{@html massagedSpoilerText}</p>
</div>
<div class="status-spoiler-button {isStatusInOwnThread ? 'status-in-own-thread' : ''}">
  <button type="button" delegate-key={delegateKey}>
    {spoilerShown ? 'Show less' : 'Show more'}
  </button>
</div>
<style>
  .status-spoiler {
    grid-area: spoiler;
    word-wrap: break-word;
    overflow: hidden;
    white-space: pre-wrap;
    font-size: 0.9em;
    margin: 10px 5px;
  }

  .status-spoiler.status-in-own-thread {
    font-size: 1.3em;
    margin: 20px 5px 10px;
  }

  .status-spoiler.status-in-notification {
    color: var(--very-deemphasized-text-color);
  }

  .status-spoiler-button {
    grid-area: spoiler-btn;
    margin: 10px 5px;
  }

  .status-spoiler-button.status-in-own-thread {
  }

  .status-spoiler-button button {
    padding: 5px 10px;
    font-size: 1.1em;
  }
</style>
<script>
  import { store } from '../../_store/store'
  import { registerClickDelegate } from '../../_utils/delegate'
  import { mark, stop } from '../../_utils/marks'
  import { emojifyText } from '../../_utils/emojifyText'
  import escapeHtml from 'escape-html'

  export default {
    oncreate () {
      let { delegateKey } = this.get()
      registerClickDelegate(this, delegateKey, () => this.onClickSpoilerButton())
    },
    store: () => store,
    computed: {
      spoilerText: ({ originalStatus }) => originalStatus.spoiler_text,
      emojis: ({ originalStatus }) => originalStatus.emojis,
      massagedSpoilerText: ({ spoilerText, emojis, $autoplayGifs }) => {
        spoilerText = escapeHtml(spoilerText)
        return emojifyText(spoilerText, emojis, $autoplayGifs)
      },
      delegateKey: ({ uuid }) => `spoiler-${uuid}`
    },
    methods: {
      onClickSpoilerButton () {
        requestAnimationFrame(() => {
          mark('clickSpoilerButton')
          let { uuid } = this.get()
          let { spoilersShown } = this.store.get()
          spoilersShown[uuid] = !spoilersShown[uuid]
          this.store.set({ spoilersShown })
          this.fire('recalculateHeight')
          stop('clickSpoilerButton')
        })
      }
    }
  }
</script>