Merge branch '221078-v2-custom-renderer-html' into 'master'

Resolve "Display non-markdown content in the WYSIWYG mode of the SSE::HTML"

Closes #221078

See merge request gitlab-org/gitlab!36330

app/assets/javascripts/vue_shared/components/rich_content_editor/services/build_custom_renderer.js

-import renderHtml from './renderers/render_html';
+import renderBlockHtml from './renderers/render_html_block';
 import renderKramdownList from './renderers/render_kramdown_list';
 import renderKramdownText from './renderers/render_kramdown_text';
 import renderIdentifierParagraph from './renderers/render_identifier_paragraph';
@@ -6,7 +6,7 @@ import renderEmbeddedRubyText from './renderers/render_embedded_ruby_text';
 import renderFontAwesomeHtmlInline from './renderers/render_font_awesome_html_inline';
 
 const htmlInlineRenderers = [renderFontAwesomeHtmlInline];
-const htmlRenderers = [renderHtml];
+const htmlBlockRenderers = [renderBlockHtml];
 const listRenderers = [renderKramdownList];
 const paragraphRenderers = [renderIdentifierParagraph];
 const textRenderers = [renderKramdownText, renderEmbeddedRubyText];
@@ -32,9 +32,9 @@ const buildCustomHTMLRenderer = (
 ) => {
   const defaults = {
     htmlBlock(node, context) {
-      const allHtmlRenderers = [...customRenderers.list, ...htmlRenderers];
+      const allHtmlBlockRenderers = [...customRenderers.htmlBlock, ...htmlBlockRenderers];
 
-      return executeRenderer(allHtmlRenderers, node, context);
+      return executeRenderer(allHtmlBlockRenderers, node, context);
     },
     htmlInline(node, context) {
       const allHtmlInlineRenderers = [...customRenderers.htmlInline, ...htmlInlineRenderers];
@@ -47,7 +47,7 @@ const buildCustomHTMLRenderer = (
       return executeRenderer(allListRenderers, node, context);
     },
     paragraph(node, context) {
-      const allParagraphRenderers = [...customRenderers.list, ...paragraphRenderers];
+      const allParagraphRenderers = [...customRenderers.paragraph, ...paragraphRenderers];
 
       return executeRenderer(allParagraphRenderers, node, context);
     },

app/assets/javascripts/vue_shared/components/rich_content_editor/services/renderers/build_uneditable_token.js

@@ -4,25 +4,36 @@ const buildToken = (type, tagName, props) => {
 
 const TAG_TYPES = {
   block: 'div',
-  inline: 'span',
+  inline: 'a',
 };
 
-export const buildUneditableOpenTokens = (token, type = TAG_TYPES.block) => {
-  return [
-    buildToken('openTag', type, {
-      attributes: { contenteditable: false },
-      classNames: [
-        'gl-px-4 gl-py-2 gl-opacity-5 gl-bg-gray-100 gl-user-select-none gl-cursor-not-allowed',
-      ],
-    }),
-    token,
-  ];
+// Open helpers (singular and multiple)
+
+const buildUneditableOpenToken = (tagType = TAG_TYPES.block) =>
+  buildToken('openTag', tagType, {
+    attributes: { contenteditable: false },
+    classNames: [
+      'gl-px-4 gl-py-2 gl-opacity-5 gl-bg-gray-100 gl-user-select-none gl-cursor-not-allowed',
+    ],
+  });
+
+export const buildUneditableOpenTokens = (token, tagType = TAG_TYPES.block) => {
+  return [buildUneditableOpenToken(tagType), token];
+};
+
+// Close helpers (singular and multiple)
+
+export const buildUneditableCloseToken = (tagType = TAG_TYPES.block) =>
+  buildToken('closeTag', tagType);
+
+export const buildUneditableCloseTokens = (token, tagType = TAG_TYPES.block) => {
+  return [token, buildUneditableCloseToken(tagType)];
 };
 
-export const buildUneditableCloseToken = (type = TAG_TYPES.block) => buildToken('closeTag', type);
+// Complete helpers (open plus close)
 
-export const buildUneditableCloseTokens = (token, type = TAG_TYPES.block) => {
-  return [token, buildUneditableCloseToken(type)];
+export const buildUneditableTokens = token => {
+  return [...buildUneditableOpenTokens(token), buildUneditableCloseToken()];
 };
 
 export const buildUneditableInlineTokens = token => {
@@ -32,6 +43,19 @@ export const buildUneditableInlineTokens = token => {
   ];
 };
 
-export const buildUneditableTokens = token => {
-  return [...buildUneditableOpenTokens(token), buildUneditableCloseToken()];
+export const buildUneditableHtmlAsTextTokens = node => {
+  /*
+  Toast UI internally appends ' data-tomark-pass ' attribute flags so it can target certain
+  nested nodes for internal use during Markdown <=> WYSIWYG conversions. In our case, we want
+  to prevent HTML being rendered completely in WYSIWYG mode and thus we use a `text` vs. `html`
+  type when building the token. However, in doing so, we need to strip out the ` data-tomark-pass `
+  to prevent their persistence within the `text` content as the user did not intend these as edits.
+
+  https://github.com/nhn/tui.editor/blob/cc54ec224fc3a4b6e5a2b19a71650959f41adc0e/apps/editor/src/js/convertor.js#L72
+  */
+  const regex = / data-tomark-pass /gm;
+  const content = node.literal.replace(regex, '');
+  const htmlAsTextToken = buildToken('text', null, { content });
+
+  return [buildUneditableOpenToken(), htmlAsTextToken, buildUneditableCloseToken()];
 };

app/assets/javascripts/vue_shared/components/rich_content_editor/services/renderers/render_html.js → app/assets/javascripts/vue_shared/components/rich_content_editor/services/renderers/render_html_block.js

-import { buildUneditableTokens } from './build_uneditable_token';
+import { buildUneditableHtmlAsTextTokens } from './build_uneditable_token';
 
 const canRender = ({ type }) => {
   return type === 'htmlBlock';
 };
 
-const render = (_, { origin }) => buildUneditableTokens(origin());
+const render = node => buildUneditableHtmlAsTextTokens(node);
 
 export default { canRender, render };

changelogs/unreleased/36330-v2-custom-renderer-html.yml

+---
+title: Add a custom HTML renderer to the Static Site Editor for HTML block syntax
+merge_request: 36330
+author:
+type: added

spec/frontend/vue_shared/components/rich_content_editor/services/renderers/build_uneditable_token_spec.js

@@ -2,8 +2,9 @@ import {
   buildUneditableOpenTokens,
   buildUneditableCloseToken,
   buildUneditableCloseTokens,
-  buildUneditableInlineTokens,
   buildUneditableTokens,
+  buildUneditableInlineTokens,
+  buildUneditableHtmlAsTextTokens,
 } from '~/vue_shared/components/rich_content_editor/services/renderers/build_uneditable_token';
 
 import {
@@ -12,6 +13,7 @@ import {
   uneditableOpenTokens,
   uneditableCloseToken,
   uneditableCloseTokens,
+  uneditableBlockTokens,
   uneditableInlineTokens,
   uneditableTokens,
 } from './mock_data';
@@ -41,6 +43,15 @@ describe('Build Uneditable Token renderer helper', () => {
     });
   });
 
+  describe('buildUneditableTokens', () => {
+    it('returns a 3-item array of tokens with the originToken wrapped in the middle of block tokens', () => {
+      const result = buildUneditableTokens(originToken);
+
+      expect(result).toHaveLength(3);
+      expect(result).toStrictEqual(uneditableTokens);
+    });
+  });
+
   describe('buildUneditableInlineTokens', () => {
     it('returns a 3-item array of tokens with the originInlineToken wrapped in the middle of inline tokens', () => {
       const result = buildUneditableInlineTokens(originInlineToken);
@@ -50,12 +61,20 @@ describe('Build Uneditable Token renderer helper', () => {
     });
   });
 
-  describe('buildUneditableTokens', () => {
-    it('returns a 3-item array of tokens with the originToken wrapped in the middle of block tokens', () => {
-      const result = buildUneditableTokens(originToken);
+  describe('buildUneditableHtmlAsTextTokens', () => {
+    it('returns a 3-item array of tokens with the htmlBlockNode wrapped as a text token in the middle of block tokens', () => {
+      const htmlBlockNode = {
+        type: 'htmlBlock',
+        literal: '<div data-tomark-pass ><h1>Some header</h1><p>Some paragraph</p></div>',
+      };
+      const result = buildUneditableHtmlAsTextTokens(htmlBlockNode);
+      const { type, content } = result[1];
+
+      expect(type).toBe('text');
+      expect(content).not.toMatch(/ data-tomark-pass /);
 
       expect(result).toHaveLength(3);
-      expect(result).toStrictEqual(uneditableTokens);
+      expect(result).toStrictEqual(uneditableBlockTokens);
     });
   });
 });

spec/frontend/vue_shared/components/rich_content_editor/services/renderers/mock_data.js

@@ -12,7 +12,7 @@ export const normalTextNode = buildMockTextNode('This is just normal text.');
 
 // Token spec helpers
 
-const buildUneditableOpenToken = type => {
+const buildMockUneditableOpenToken = type => {
   return {
     type: 'openTag',
     tagName: type,
@@ -23,7 +23,7 @@ const buildUneditableOpenToken = type => {
   };
 };
 
-const buildUneditableCloseToken = type => {
+const buildMockUneditableCloseToken = type => {
   return { type: 'closeTag', tagName: type };
 };
 
@@ -31,8 +31,8 @@ export const originToken = {
   type: 'text',
   content: '{:.no_toc .hidden-md .hidden-lg}',
 };
-export const uneditableCloseToken = buildUneditableCloseToken('div');
-export const uneditableOpenTokens = [buildUneditableOpenToken('div'), originToken];
+export const uneditableCloseToken = buildMockUneditableCloseToken('div');
+export const uneditableOpenTokens = [buildMockUneditableOpenToken('div'), originToken];
 export const uneditableCloseTokens = [originToken, uneditableCloseToken];
 export const uneditableTokens = [...uneditableOpenTokens, uneditableCloseToken];
 
@@ -41,7 +41,17 @@ export const originInlineToken = {
   content: '<i>Inline</i> content',
 };
 export const uneditableInlineTokens = [
-  buildUneditableOpenToken('span'),
+  buildMockUneditableOpenToken('a'),
   originInlineToken,
-  buildUneditableCloseToken('span'),
+  buildMockUneditableCloseToken('a'),
+];
+
+export const uneditableBlockTokens = [
+  buildMockUneditableOpenToken('div'),
+  {
+    type: 'text',
+    tagName: null,
+    content: '<div><h1>Some header</h1><p>Some paragraph</p></div>',
+  },
+  buildMockUneditableCloseToken('div'),
 ];

spec/frontend/vue_shared/components/rich_content_editor/services/renderers/render_html_spec.js → spec/frontend/vue_shared/components/rich_content_editor/services/renderers/render_html_block_spec.js

-import renderer from '~/vue_shared/components/rich_content_editor/services/renderers/render_html';
-import { buildUneditableTokens } from '~/vue_shared/components/rich_content_editor/services/renderers/build_uneditable_token';
+import renderer from '~/vue_shared/components/rich_content_editor/services/renderers/render_html_block';
+import { buildUneditableHtmlAsTextTokens } from '~/vue_shared/components/rich_content_editor/services/renderers/build_uneditable_token';
 
 import { normalTextNode } from './mock_data';
 
-const htmlLiteral = '<div><h1>Heading</h1><p>Paragraph.</p></div>';
 const htmlBlockNode = {
   firstChild: null,
-  literal: htmlLiteral,
+  literal: '<div><h1>Heading</h1><p>Paragraph.</p></div>',
   type: 'htmlBlock',
 };
 
@@ -22,13 +21,18 @@ describe('Render HTML renderer', () => {
   });
 
   describe('render', () => {
-    it('should return uneditable tokens wrapping the origin token', () => {
-      const origin = jest.fn();
-      const context = { origin };
+    const htmlBlockNodeToMark = {
+      firstChild: null,
+      literal: '<div data-to-mark ></div>',
+      type: 'htmlBlock',
+    };
 
-      expect(renderer.render(htmlBlockNode, context)).toStrictEqual(
-        buildUneditableTokens(origin()),
-      );
+    it.each`
+      node
+      ${htmlBlockNode}
+      ${htmlBlockNodeToMark}
+    `('should return uneditable tokens wrapping the $node as a token', ({ node }) => {
+      expect(renderer.render(node)).toStrictEqual(buildUneditableHtmlAsTextTokens(node));
     });
   });
 });