736687 - Deprecate MozBlobBuilder

Status: RESOLVED FIXED

(Core :: DOM: Core & HTML, defect)

Description

[Masatoshi Kimura [:emk]]

Blob constructor was proposed as a replacement of BlobBuilder.

Comment 1

[Jonas Sicking (:sicking) No longer reading bugmail consistently]

Yeah. I think for now we should just add a warning whenever BlobBuilder is used. Eventually we should be able to remove it.

Comment 2

[Masatoshi Kimura [:emk]]

Attachment: Warn use of MozBlobBuilder

Comment 3

[Dão Gottwald [::dao]]

http://hg.mozilla.org/integration/mozilla-inbound/rev/5b2e4538f43e

Comment 4

[Matt Brubeck (:mbrubeck)]

https://hg.mozilla.org/mozilla-central/rev/5b2e4538f43e

Comment 5

[Alon Zakai (:azakai)]

I saw this deprecation warning so I tried to use the Blob constructor, but I get this error:

  new Blob([new ArrayBuffer(10)])

  [10:37:43.420] [Exception... "An attempt was made to use an object that is not, or is no longer, usable"  code: "11" nsresult: "0x8053000b (InvalidStateError)"  location: "Web Console Line: 1"]

Should I file a bug, or is the Blob constructor not ready for use yet?

Comment 6

[Masatoshi Kimura [:emk]]

Please file a bug and block this bug and CC me.

Comment 7

[Daniel Holbert [:dholbert]]

RE dev-doc-needed:
https://developer.mozilla.org/en/Document_Object_Model_%28DOM%29/BlobBuilder still says "As MozBlobBuilder" for Firefox

I imagine we need to add a line there with "14.0 (14.0) As BlobBuilder" or something?

Comment 8

[Masatoshi Kimura [:emk]]

No, MozBlobBuilder is not (and will never be) unprefixed. Instead it will be removed.

Comment 9

[Jan Varga [:janv]]

Comment on attachment 606941 [details] [diff] [review]
Warn use of MozBlobBuilder

>diff --git a/dom/indexedDB/test/test_file_cross_database_copying.html b/dom/indexedDB/test/test_file_cross_database_copying.html
>--- a/dom/indexedDB/test/test_file_cross_database_copying.html
>+++ b/dom/indexedDB/test/test_file_cross_database_copying.html
>@@ -56,19 +56,16 @@
>       let result = event.target.result;
>       verifyBlob(result, fileData.file, 1);
>       yield;
> 
>       if (!refResult) {
>         refResult = result;
>         continue;
>       }
>-
>-      netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
>-      isnot(result.mozFullPath, refResult.mozFullPath, "Different os files");

why did you remove that ?

Comment 10

[Masatoshi Kimura [:emk]]

Because Blob constructor doesn't support getFile() equivalent function.

Comment 11

[Jan Varga [:janv]]

(In reply to Masatoshi Kimura [:emk] from comment #10)
> Because Blob constructor doesn't support getFile() equivalent function.

The automatic test is now almost useless (w/o that check)

I see that getFile() in file.js now returns only blobs, so files (nsIDOMFile) are not tested at all, I mean they are not tested in entire test suite.

There must be a way to create a File, no ?

Comment 12

[Masatoshi Kimura [:emk]]

Filed bug 736687.

Comment 13

[Masatoshi Kimura [:emk]]

Sorry, bug 742941.

Comment 14

[Jan Varga [:janv]]

thanks!

Comment 15

[Eric Shepherd [:sheppy]]

Documentation updated:

https://developer.mozilla.org/en/DOM/BlobBuilder

Listed on Firefox 14 for developers.