Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
fix: crash when saving edited PDF files
- Loading branch information
1 parent
0c75b3b
commit 4566ca3
Showing
2 changed files
with
87 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
86 changes: 86 additions & 0 deletions
86
patches/chromium/fix_crash_when_saving_edited_pdf_files.patch
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 | ||
| From: Shelley Vohr <shelley.vohr@gmail.com> | ||
| Date: Mon, 17 Jan 2022 23:47:54 +0100 | ||
| Subject: fix: crash when saving edited PDF files | ||
|
|
||
| This commit fixes a crash that persists any time a user attempts to | ||
| download an edited PDF. This was happening because the logic flow for | ||
| downloading of any edited PDF triggers a call to | ||
| chrome.fileSystem.chooseEntry, which we do not support and which | ||
| therefore causes unmapped page access crashes. | ||
|
|
||
| This patch can be removed should we choose to support chrome.fileSystem | ||
| or support it enough to fix the crash. | ||
|
|
||
| diff --git a/chrome/browser/resources/pdf/pdf_viewer.js b/chrome/browser/resources/pdf/pdf_viewer.js | ||
| index 42407ef7c214bed1eb44165a87c6d0dc44f0ad7f..afc8b93eff9c8b325555b0a517936bdf760394b2 100644 | ||
| --- a/chrome/browser/resources/pdf/pdf_viewer.js | ||
| +++ b/chrome/browser/resources/pdf/pdf_viewer.js | ||
| @@ -967,25 +967,12 @@ export class PDFViewerElement extends PDFViewerBaseElement { | ||
| dataArray = [result.dataToSave]; | ||
| } | ||
|
|
||
| + const a = document.createElement('a'); | ||
| + a.download = fileName; | ||
| const blob = new Blob(dataArray); | ||
| - const fileName = this.attachments_[index].name; | ||
| - chrome.fileSystem.chooseEntry( | ||
| - {type: 'saveFile', suggestedName: fileName}, entry => { | ||
| - if (chrome.runtime.lastError) { | ||
| - if (chrome.runtime.lastError.message !== 'User cancelled') { | ||
| - console.error( | ||
| - 'chrome.fileSystem.chooseEntry failed: ' + | ||
| - chrome.runtime.lastError.message); | ||
| - } | ||
| - return; | ||
| - } | ||
| - entry.createWriter(writer => { | ||
| - writer.write(blob); | ||
| - // Unblock closing the window now that the user has saved | ||
| - // successfully. | ||
| - chrome.mimeHandlerPrivate.setShowBeforeUnloadDialog(false); | ||
| - }); | ||
| - }); | ||
| + a.href = URL.createObjectURL(blob); | ||
| + a.click(); | ||
| + URL.revokeObjectURL(a.href); | ||
| } | ||
|
|
||
| /** | ||
| @@ -1112,30 +1099,13 @@ export class PDFViewerElement extends PDFViewerBaseElement { | ||
| if (!fileName.toLowerCase().endsWith('.pdf')) { | ||
| fileName = fileName + '.pdf'; | ||
| } | ||
| - // Create blob before callback to avoid race condition. | ||
| + | ||
| + const a = document.createElement('a'); | ||
| + a.download = fileName; | ||
| const blob = new Blob([result.dataToSave], {type: 'application/pdf'}); | ||
| - chrome.fileSystem.chooseEntry( | ||
| - { | ||
| - type: 'saveFile', | ||
| - accepts: [{description: '*.pdf', extensions: ['pdf']}], | ||
| - suggestedName: fileName | ||
| - }, | ||
| - entry => { | ||
| - if (chrome.runtime.lastError) { | ||
| - if (chrome.runtime.lastError.message !== 'User cancelled') { | ||
| - console.error( | ||
| - 'chrome.fileSystem.chooseEntry failed: ' + | ||
| - chrome.runtime.lastError.message); | ||
| - } | ||
| - return; | ||
| - } | ||
| - entry.createWriter(writer => { | ||
| - writer.write(blob); | ||
| - // Unblock closing the window now that the user has saved | ||
| - // successfully. | ||
| - chrome.mimeHandlerPrivate.setShowBeforeUnloadDialog(false); | ||
| - }); | ||
| - }); | ||
| + a.href = URL.createObjectURL(blob); | ||
| + a.click(); | ||
| + URL.revokeObjectURL(a.href); | ||
|
|
||
| // <if expr="enable_ink"> | ||
| // Saving in Annotation mode is destructive: crbug.com/919364 |