<template>
  <div v-if="editor" class="container">
    <div class="control-group">
      <div class="button-group">
        <button @click="editor.chain().focus().toggleSubscript().run()" :class="{ 'is-active': editor.isActive('subscript') }">
          Toggle subscript
        </button>
        <button @click="editor.chain().focus().setSubscript().run()" :disabled="editor.isActive('subscript')">
          Set subscript
        </button>
        <button @click="editor.chain().focus().unsetSubscript().run()" :disabled="!editor.isActive('subscript')">
          Unset subscript
        </button>
      </div>
    </div>
    <editor-content :editor="editor" />
  </div>
</template>

<script>
import Document from '@tiptap/extension-document'
import Paragraph from '@tiptap/extension-paragraph'
import Subscript from '@tiptap/extension-subscript'
import Text from '@tiptap/extension-text'
import { Editor, EditorContent } from '@tiptap/vue-3'

export default {
  components: {
    EditorContent,
  },

  data() {
    return {
      editor: null,
    }
  },

  mounted() {
    this.editor = new Editor({
      extensions: [
        Document,
        Paragraph,
        Text,
        Subscript,
      ],
      content: `
        <p>This is regular text.</p>
        <p><sub>This is subscript.</sub></p>
        <p><span style="vertical-align: sub">And this.</span></p>
      `,
    })
  },

  beforeUnmount() {
    this.editor.destroy()
  },
}
</script>

<style lang="scss">
/* Basic editor styles */
.tiptap {
  :first-child {
    margin-top: 0;
  }
}
</style>
