From 87611d812ae1974e993b18a7930a886219480711 Mon Sep 17 00:00:00 2001
From: Hans Pagel <hans.pagel@ueber.io>
Date: Tue, 1 Jun 2021 16:58:50 +0200
Subject: [PATCH] experiments: add a figure + figcaption node

---
 docs/src/demos/Experiments/Figure/figure.ts | 104 ++++++++++++++++++++
 docs/src/demos/Experiments/Figure/index.vue |  81 +++++++++++++++
 docs/src/docPages/experiments.md            |   1 +
 docs/src/docPages/experiments/figure.md     |  17 ++++
 4 files changed, 203 insertions(+)
 create mode 100644 docs/src/demos/Experiments/Figure/figure.ts
 create mode 100644 docs/src/demos/Experiments/Figure/index.vue
 create mode 100644 docs/src/docPages/experiments/figure.md

diff --git a/docs/src/demos/Experiments/Figure/figure.ts b/docs/src/demos/Experiments/Figure/figure.ts
new file mode 100644
index 00000000..9da3107e
--- /dev/null
+++ b/docs/src/demos/Experiments/Figure/figure.ts
@@ -0,0 +1,104 @@
+import {
+  Command,
+  Node,
+  nodeInputRule,
+} from '@tiptap/core'
+
+export interface FigureOptions {
+  HTMLAttributes: Record<string, any>,
+}
+
+declare module '@tiptap/core' {
+  interface Commands {
+    figure: {
+      /**
+       * Add a figure element
+       */
+      setFigure: (options: { src: string, alt?: string, title?: string }) => Command,
+    }
+  }
+}
+
+export const inputRegex = /!\[(.+|:?)]\((\S+)(?:(?:\s+)["'](\S+)["'])?\)/
+
+export const Figure = Node.create<FigureOptions>({
+  name: 'figure',
+
+  defaultOptions: {
+    // inline: false,
+    HTMLAttributes: {},
+  },
+
+  group: 'block',
+
+  content: 'inline*',
+
+  draggable: true,
+
+  addAttributes() {
+    return {
+      src: {
+        default: null,
+        parseHTML: element => {
+          return {
+            src: element.querySelector('img')?.getAttribute('src'),
+          }
+        },
+      },
+      alt: {
+        default: null,
+        parseHTML: element => {
+          return {
+            alt: element.querySelector('img')?.getAttribute('alt'),
+          }
+        },
+      },
+      title: {
+        default: null,
+        parseHTML: element => {
+          return {
+            title: element.querySelector('img')?.getAttribute('title'),
+          }
+        },
+      },
+    }
+  },
+
+  parseHTML() {
+    return [
+      {
+        tag: 'figure',
+        contentELement: 'figcaption',
+      },
+    ]
+  },
+
+  renderHTML({ HTMLAttributes }) {
+    return [
+      'figure', this.options.HTMLAttributes,
+      ['img', HTMLAttributes],
+      ['figcaption', 0],
+    ]
+  },
+
+  addCommands() {
+    return {
+      setFigure: options => ({ commands }) => {
+        return commands.insertContent({
+          type: this.name,
+          attrs: options,
+        })
+      },
+    }
+  },
+
+  addInputRules() {
+    return [
+      nodeInputRule(inputRegex, this.type, match => {
+        const [, alt, src, title] = match
+
+        return { src, alt, title }
+      }),
+    ]
+  },
+})
diff --git a/docs/src/demos/Experiments/Figure/index.vue b/docs/src/demos/Experiments/Figure/index.vue
new file mode 100644
index 00000000..6e593e84
--- /dev/null
+++ b/docs/src/demos/Experiments/Figure/index.vue
@@ -0,0 +1,81 @@
+<template>
+  <div v-if="editor">
+    <editor-content :editor="editor" />
+
+    <h2>HTML</h2>
+    {{ editor.getHTML() }}
+  </div>
+</template>
+
+<script>
+import { Editor, EditorContent } from '@tiptap/vue-2'
+import StarterKit from '@tiptap/starter-kit'
+import { Figure } from './figure'
+
+export default {
+  components: {
+    EditorContent,
+  },
+
+  data() {
+    return {
+      editor: null,
+    }
+  },
+
+  mounted() {
+    this.editor = new Editor({
+      extensions: [
+        StarterKit,
+        Figure,
+      ],
+      content: `
+        <p>Figure + Figcaption</p>
+        <figure>
+          <img src="https://source.unsplash.com/8xznAGy4HcY/800x400" alt="Random photo of something" title="Who’s dat?">
+          <figcaption>
+            <p>Amazing caption</p>
+          </figcaption>
+        </figure>
+        <p>That’s it.</p>
+      `,
+    })
+  },
+
+  beforeDestroy() {
+    this.editor.destroy()
+  },
+}
+</script>
+
+<style lang="scss" scoped>
+::v-deep {
+  .ProseMirror {
+    > * + * {
+      margin-top: 0.75em;
+    }
+
+    figure {
+      max-width: 25rem;
+      border: 3px solid #0D0D0D;
+      border-radius: 0.5rem;
+      margin: 1rem 0;
+      padding: 0.5rem;
+    }
+
+    figcaption {
+      margin-top: 0.25rem;
+      text-align: center;
+      padding: 0.5rem;
+      border: 2px dashed #0D0D0D20;
+      border-radius: 0.5rem;
+    }
+
+    img {
+      max-width: 100%;
+      height: auto;
+      border-radius: 0.5rem;
+    }
+  }
+}
+</style>
diff --git a/docs/src/docPages/experiments.md b/docs/src/docPages/experiments.md
index 41e29d5d..c86656de 100644
--- a/docs/src/docPages/experiments.md
+++ b/docs/src/docPages/experiments.md
@@ -11,3 +11,4 @@ Congratulations! You’ve found our playground with a list of experiments. Be aw
 * [@tiptap/extension-collaboration-annotation](/experiments/collaboration-annotation)
 * [@tiptap/extension-word-break](/experiments/word-break)
 * [@tiptap/extension-trailing-node](/experiments/trailing-node)
+* [@tiptap/extension-figure](/experiments/figure)
diff --git a/docs/src/docPages/experiments/figure.md b/docs/src/docPages/experiments/figure.md
new file mode 100644
index 00000000..db2790d0
--- /dev/null
+++ b/docs/src/docPages/experiments/figure.md
@@ -0,0 +1,17 @@
+# Figure
+
+⚠️ Experiment
+
+## Known issues
+* Dragging should move the image, but duplicates it
+
+## Tasks
+* Add the caption as an optional parameter to the command
+* Build commands to wrap an image into a figure + figcaption?
+* Build commands to unrwap figure + figcaption to an image?
+
+## Related links
+* https://github.com/ueberdosis/tiptap/issues/573#issuecomment-730122427
+* https://discuss.prosemirror.net/t/figure-and-editable-caption/462/5
+
+<demo name="Experiments/Figure" />