feat: Page break (#1372)

* feat: Page break block

* feat: Add page break support to PDF & DOCX exporters

* feat: Add CSS to support Page break when printing

* Small UX changes

* Removed page break from default schema

* Fixed unit tests

* Fixed lint

* Implemented PR feedback

---------

Co-authored-by: matthewlipski <matthewlipski@gmail.com>

Author: areknawo

examples/01-basic/04-all-blocks/App.tsx

@@ -1,34 +1,11 @@
-import {
-  BlockNoteSchema,
-  combineByGroup,
-  filterSuggestionItems,
-  locales,
-} from "@blocknote/core";
 import "@blocknote/core/fonts/inter.css";
 import { BlockNoteView } from "@blocknote/mantine";
 import "@blocknote/mantine/style.css";
-import {
-  SuggestionMenuController,
-  getDefaultReactSlashMenuItems,
-  useCreateBlockNote,
-} from "@blocknote/react";
-import {
-  getMultiColumnSlashMenuItems,
-  multiColumnDropCursor,
-  locales as multiColumnLocales,
-  withMultiColumn,
-} from "@blocknote/xl-multi-column";
-import { useMemo } from "react";
+import { useCreateBlockNote } from "@blocknote/react";
 
 export default function App() {
   // Creates a new editor instance.
   const editor = useCreateBlockNote({
-    schema: withMultiColumn(BlockNoteSchema.create()),
-    dropCursor: multiColumnDropCursor,
-    dictionary: {
-      ...locales.en,
-      multi_column: multiColumnLocales.en,
-    },
     initialContent: [
       {
         type: "paragraph",
@@ -51,35 +28,6 @@ export default function App() {
         type: "paragraph",
         content: "Paragraph",
       },
-      {
-        type: "columnList",
-        children: [
-          {
-            type: "column",
-            props: {
-              width: 0.8,
-            },
-            children: [
-              {
-                type: "paragraph",
-                content: "Hello to the left!",
-              },
-            ],
-          },
-          {
-            type: "column",
-            props: {
-              width: 1.2,
-            },
-            children: [
-              {
-                type: "paragraph",
-                content: "Hello to the right!",
-              },
-            ],
-          },
-        ],
-      },
       {
         type: "heading",
         content: "Heading",
@@ -189,20 +137,6 @@ export default function App() {
     ],
   });
 
-  const slashMenuItems = useMemo(() => {
-    return combineByGroup(
-      getDefaultReactSlashMenuItems(editor),
-      getMultiColumnSlashMenuItems(editor)
-    );
-  }, [editor]);
-
   // Renders the editor instance using a React component.
-  return (
-    <BlockNoteView editor={editor} slashMenu={false}>
-      <SuggestionMenuController
-        triggerCharacter={"/"}
-        getItems={async (query) => filterSuggestionItems(slashMenuItems, query)}
-      />
-    </BlockNoteView>
-  );
+  return <BlockNoteView editor={editor} />;
 }

examples/05-interoperability/05-converting-blocks-to-pdf/App.tsx

@@ -1,13 +1,25 @@
+import {
+  BlockNoteSchema,
+  combineByGroup,
+  filterSuggestionItems,
+  withPageBreak,
+} from "@blocknote/core";
 import "@blocknote/core/fonts/inter.css";
 import { BlockNoteView } from "@blocknote/mantine";
 import "@blocknote/mantine/style.css";
-import { useCreateBlockNote } from "@blocknote/react";
+import {
+  getDefaultReactSlashMenuItems,
+  getPageBreakReactSlashMenuItems,
+  SuggestionMenuController,
+  useCreateBlockNote,
+} from "@blocknote/react";
 import {
   PDFExporter,
   pdfDefaultSchemaMappings,
 } from "@blocknote/xl-pdf-exporter";
 import { PDFViewer } from "@react-pdf/renderer";
-import { useEffect, useState } from "react";
+import { useEffect, useMemo, useState } from "react";
+
 import "./styles.css";
 
 export default function App() {
@@ -16,6 +28,7 @@ export default function App() {
 
   // Creates a new editor instance with some initial content.
   const editor = useCreateBlockNote({
+    schema: withPageBreak(BlockNoteSchema.create()),
     initialContent: [
       {
         type: "paragraph",
@@ -180,6 +193,9 @@ export default function App() {
           ],
         },
       },
+      {
+        type: "pageBreak",
+      },
       {
         type: "file",
       },
@@ -308,11 +324,25 @@ export default function App() {
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, []);
 
+  const slashMenuItems = useMemo(() => {
+    return combineByGroup(
+      getDefaultReactSlashMenuItems(editor),
+      getPageBreakReactSlashMenuItems(editor)
+    );
+  }, [editor]);
+
   // Renders the editor instance, and its contents as HTML below.
   return (
     <div className="wrapper">
       <div className="editor">
-        <BlockNoteView editor={editor} onChange={onChange} />
+        <BlockNoteView editor={editor} slashMenu={false} onChange={onChange}>
+          <SuggestionMenuController
+            triggerCharacter={"/"}
+            getItems={async (query) =>
+              filterSuggestionItems(slashMenuItems, query)
+            }
+          />
+        </BlockNoteView>
       </div>
       <div className="pdf">
         <PDFViewer width={"100%"}>{pdfDocument}</PDFViewer>

examples/05-interoperability/06-converting-blocks-to-docx/App.tsx

@@ -1,16 +1,30 @@
+import {
+  BlockNoteSchema,
+  combineByGroup,
+  filterSuggestionItems,
+  withPageBreak,
+} from "@blocknote/core";
 import "@blocknote/core/fonts/inter.css";
 import { BlockNoteView } from "@blocknote/mantine";
 import "@blocknote/mantine/style.css";
-import { useCreateBlockNote } from "@blocknote/react";
+import {
+  getDefaultReactSlashMenuItems,
+  getPageBreakReactSlashMenuItems,
+  SuggestionMenuController,
+  useCreateBlockNote,
+} from "@blocknote/react";
 import {
   DOCXExporter,
   docxDefaultSchemaMappings,
 } from "@blocknote/xl-docx-exporter";
+import { useMemo } from "react";
+
 import "./styles.css";
 
 export default function App() {
   // Creates a new editor instance with some initial content.
   const editor = useCreateBlockNote({
+    schema: withPageBreak(BlockNoteSchema.create()),
     initialContent: [
       {
         type: "paragraph",
@@ -175,6 +189,9 @@ export default function App() {
           ],
         },
       },
+      {
+        type: "pageBreak",
+      },
       {
         type: "file",
       },
@@ -305,6 +322,13 @@ export default function App() {
     window.URL.revokeObjectURL(link.href);
   };
 
+  const slashMenuItems = useMemo(() => {
+    return combineByGroup(
+      getDefaultReactSlashMenuItems(editor),
+      getPageBreakReactSlashMenuItems(editor)
+    );
+  }, [editor]);
+
   // Renders the editor instance, and its contents as HTML below.
   return (
     <div>
@@ -314,7 +338,14 @@ export default function App() {
         </button>
       </div>
       <div className="item">
-        <BlockNoteView editor={editor} />
+        <BlockNoteView editor={editor} slashMenu={false}>
+          <SuggestionMenuController
+            triggerCharacter={"/"}
+            getItems={async (query) =>
+              filterSuggestionItems(slashMenuItems, query)
+            }
+          />
+        </BlockNoteView>
       </div>
     </div>
   );

package-lock.json

@@ -0,0 +1 @@
+<div data-page-break=""></div>

packages/core/src/api/exporters/html/__snapshots__/pageBreak/basic/external.html

@@ -0,0 +1 @@
+<div class="bn-block-group" data-node-type="blockGroup"><div class="bn-block-outer" data-node-type="blockOuter" data-id="1"><div class="bn-block" data-node-type="blockContainer" data-id="1"><div class="bn-block-content" data-content-type="pageBreak"><div class="bn-page-break" data-page-break=""></div></div></div></div></div>

packages/core/src/api/exporters/html/__snapshots__/pageBreak/basic/internal.html

@@ -1605,6 +1605,22 @@ exports[`Test BlockNote-Prosemirror conversion > Case: default schema > Convert
 }
 `;
 
+exports[`Test BlockNote-Prosemirror conversion > Case: default schema > Convert pageBreak/basic to/from prosemirror 1`] = `
+{
+  "attrs": {
+    "backgroundColor": "default",
+    "id": "1",
+    "textColor": "default",
+  },
+  "content": [
+    {
+      "type": "pageBreak",
+    },
+  ],
+  "type": "blockContainer",
+}
+`;
+
 exports[`Test BlockNote-Prosemirror conversion > Case: default schema > Convert paragraph/basic to/from prosemirror 1`] = `
 {
   "attrs": {

packages/core/src/api/exporters/markdown/__snapshots__/pageBreak/basic/markdown.md

@@ -6,16 +6,22 @@ import {
   DefaultInlineContentSchema,
   DefaultStyleSchema,
 } from "../../../blocks/defaultBlocks.js";
+import {
+  pageBreakSchema,
+  withPageBreak,
+} from "../../../blocks/PageBreakBlockContent/schema.js";
 import { BlockNoteEditor } from "../../../editor/BlockNoteEditor.js";
+import { BlockNoteSchema } from "../../../editor/BlockNoteSchema.js";
 
 export const defaultSchemaTestCases: EditorTestCases<
-  DefaultBlockSchema,
+  DefaultBlockSchema & typeof pageBreakSchema.blockSchema,
   DefaultInlineContentSchema,
   DefaultStyleSchema
 > = {
   name: "default schema",
   createEditor: () => {
     return BlockNoteEditor.create({
+      schema: withPageBreak(BlockNoteSchema.create()),
       uploadFile: uploadToTmpFilesDotOrg_DEV_ONLY,
     });
   },
@@ -202,6 +208,14 @@ export const defaultSchemaTestCases: EditorTestCases<
         },
       ],
     },
+    {
+      name: "pageBreak/basic",
+      blocks: [
+        {
+          type: "pageBreak",
+        },
+      ],
+    },
     {
       name: "file/button",
       blocks: [