♻️(export) change pdf block from embed to iframe

When trying to print with a embed PDF the
browser's print dialog stays blocked and the user
can't print the document. Changing the PDF block
to use an iframe instead of an embed resolves
this issue.

src/frontend/apps/e2e/__tests__/app-impress/doc-editor.spec.ts

@@ -976,7 +976,10 @@ test.describe('Doc Editor', () => {
     await expect(pdfBlock).toBeVisible();
 
     // Try with invalid PDF first
-    await page.getByText(/Add (PDF|file)/).click();
+    await page
+      .getByText(/Add (PDF|file)/)
+      .first()
+      .click();
 
     await page.locator('[data-test="embed-tab"]').click();
 
@@ -994,7 +997,6 @@ test.describe('Doc Editor', () => {
     // Now with a valid PDF
     await page.getByText(/Add (PDF|file)/).click();
     const fileChooserPromise = page.waitForEvent('filechooser');
-    const downloadPromise = page.waitForEvent('download');
     await page.getByText(/Upload (PDF|file)/).click();
     const fileChooser = await fileChooserPromise;
 
@@ -1003,24 +1005,16 @@ test.describe('Doc Editor', () => {
     // Wait for the media-check to be processed
     await page.waitForTimeout(1000);
 
-    const pdfEmbed = page
-      .locator('.--docs--editor-container embed.bn-visual-media')
+    const pdfIframe = page
+      .locator('.--docs--editor-container iframe.bn-visual-media')
       .first();
 
     // Check src of pdf
-    expect(await pdfEmbed.getAttribute('src')).toMatch(
+    expect(await pdfIframe.getAttribute('src')).toMatch(
       /http:\/\/localhost:8083\/media\/.*\/attachments\/.*.pdf/,
     );
 
-    await expect(pdfEmbed).toHaveAttribute('type', 'application/pdf');
-    await expect(pdfEmbed).toHaveAttribute('role', 'presentation');
-
-    // Check download with original filename
-    await pdfBlock.click();
-    await page.locator('[data-test="downloadfile"]').click();
-
-    const download = await downloadPromise;
-    expect(download.suggestedFilename()).toBe('test-pdf.pdf');
+    await expect(pdfIframe).toHaveAttribute('role', 'presentation');
   });
 
   test('it preserves text when switching between mobile and desktop views', async ({

src/frontend/apps/impress/src/features/docs/doc-editor/components/custom-blocks/PdfBlock.tsx

@@ -15,14 +15,18 @@ import {
 import { TFunction } from 'i18next';
 import { useEffect, useState } from 'react';
 import { useTranslation } from 'react-i18next';
-import { createGlobalStyle, css } from 'styled-components';
+import { createGlobalStyle } from 'styled-components';
 
 import { Box, Icon, Loading } from '@/components';
 
+import Warning from '../../assets/warning.svg';
 import { ANALYZE_URL } from '../../conf';
 import { DocsBlockNoteEditor } from '../../types';
 
 const PDFBlockStyle = createGlobalStyle`
+  .bn-block-content[data-content-type="pdf"] .bn-file-block-content-wrapper {
+    width: fit-content;
+  }
   .bn-block-content[data-content-type="pdf"] .bn-file-block-content-wrapper[style*="fit-content"] {
     width: 100% !important;
   }
@@ -59,11 +63,7 @@ interface PdfBlockComponentProps {
   >;
 }
 
-const PdfBlockComponent = ({
-  editor,
-  block,
-  contentRef,
-}: PdfBlockComponentProps) => {
+const PdfBlockComponent = ({ editor, block }: PdfBlockComponentProps) => {
   const pdfUrl = block.props.url;
   const { i18n, t } = useTranslation();
   const lang = i18n.resolvedLanguage;
@@ -114,27 +114,29 @@ const PdfBlockComponent = ({
     void validatePDFContent();
   }, [pdfUrl]);
 
+  const isInvalidPDF =
+    !isPDFContentLoading && isPDFContent !== null && !isPDFContent;
+
+  if (isInvalidPDF) {
+    return (
+      <Box
+        $direction="row"
+        $gap="0.5rem"
+        $width="inherit"
+        $css="pointer-events: none;"
+        contentEditable={false}
+        draggable={false}
+      >
+        <Warning />
+        {t('Invalid or missing PDF file.')}
+      </Box>
+    );
+  }
+
   return (
-    <Box ref={contentRef} className="bn-file-block-content-wrapper">
+    <>
       <PDFBlockStyle />
       {isPDFContentLoading && <Loading />}
-      {!isPDFContentLoading && isPDFContent !== null && !isPDFContent && (
-        <Box
-          $align="center"
-          $justify="center"
-          $color="#666"
-          $background="#f5f5f5"
-          $border="1px solid #ddd"
-          $height="300px"
-          $css={css`
-            text-align: center;
-          `}
-          contentEditable={false}
-          onClick={() => editor.setTextCursorPosition(block)}
-        >
-          {t('Invalid or missing PDF file.')}
-        </Box>
-      )}
       <ResizableFileBlockWrapper
         buttonIcon={
           <Icon iconName="upload" $size="24px" $css="line-height: normal;" />
@@ -144,21 +146,19 @@ const PdfBlockComponent = ({
       >
         {!isPDFContentLoading && isPDFContent && (
           <Box
-            as="embed"
+            as="iframe"
             className="bn-visual-media"
             role="presentation"
             $width="100%"
             $height="450px"
-            type="application/pdf"
             src={pdfUrl}
             aria-label={block.props.name || t('PDF document')}
             contentEditable={false}
             draggable={false}
-            onClick={() => editor.setTextCursorPosition(block)}
           />
         )}
       </ResizableFileBlockWrapper>
-    </Box>
+    </>
   );
 };