1698270 - messages.getAttachmentFile needs to inform the File object of the content type

Status: RESOLVED FIXED

(Thunderbird :: Add-Ons: Extensions API, defect)

Description

[Mark Banner (:standard8)]

I've been trying out bug 1550960 on latest central, and I hit an issue when loading images:

        let file = await browser.messages.getAttachmentFile(
          id,
          attachment.partName
        );
        let reader = new FileReader();
        attachment.url = await new Promise((resolve) => {
          reader.onload = (e) => {
            resolve(e.target.result);
          };
          reader.readAsDataURL(file);
        });

In this case, the data url returned always starts with data:application/octet-stream;base64,....

If I try and change the content type in the url, then it still fails to load.

The solution is to tell the created File object about the content type, so that it can get everything right.

Comment 1

[Mark Banner (:standard8)]

Attachment: Bug 1698270 - The File object needs to know the content type for correct handling of attachment files in messages.getAttachmentFile WebExtension API. r?john.bieling!

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/comm-central/rev/a9ec53ce2ad2
The File object needs to know the content type for correct handling of attachment files in messages.getAttachmentFile WebExtension API. r=john.bieling