Bug 15062 – Implement document.compatMode

• Component: DOM
• Status: RESOLVED FIXED

[Geoffrey Garen]

In IE and FF, it tells you whether you're in quirks mode:

document.compatMode := "BackCompat" | "CSS1Compat"

[Vincent Ricard]

Created attachment 16147 [details]
implementation in the Document interface

here is a patch to implement document.compatMode. I used the followings links to match the FF behavior; but i'm not sure if compatMode should be declared in the Document interface or in HTMLDocument:
- http://www.whatwg.org/specs/web-apps/current-work/multipage/section-documents.html
- http://developer.mozilla.org/en/docs/DOM:document.compatMode

So if we are in Strict mode (or AlmostStrict), we return 'CSS1Compat', otherwie we return 'BackCompat'.

[Sam Weinig]

Comment on attachment 16147 [details]
implementation in the Document interface

The "{" should be on a new line.
+String Document::compatMode() const {
+    return inCompatMode() ? "BackCompat" : "CSS1Compat";
+}

I don't think there is any reason for [ConvertNullStringTo=Undefined] as null is not a possible return value.
+        readonly attribute [ConvertNullStringTo=Undefined] DOMString compatMode;

Also, does this attribute make sense for Documents other HTML documents?  If not, can we put this in the HTMLDocument?  r- for now.

[Sam Weinig]

I would also like to see a test for when we are in AlmostStrict mode.

[Vincent Ricard]

Created attachment 16167 [details]
Implement compatMode (in HTMLDocument interface)

Here is the previous patch with all needed corrections (compatMode now belongs to HTMLDocument), and a new test case (now, there is one for each ParseMode)

[Alexey Proskuryakov]

(In reply to comment #2)
> Also, does this attribute make sense for Documents other HTML documents?

It works for XHTML in Firefox, so it probably does with our current code organization.

[Maciej Stachowiak]

Comment on attachment 16167 [details]
Implement compatMode (in HTMLDocument interface)

Implementing in HTMLDocument is ok for now - eventually we'll move all HTMLDocument stuff to be on all documents.

r=me for feature-branch

[Eric Seidel (no email)]

Landed as r26096 on feature-branch.

[Alexey Proskuryakov]

These landed tests fail for me:

fast/dom/compatMode-AlmostStrict.html -> failed
.
fast/dom/compatMode-Compat.html -> failed
.
fast/dom/compatMode-Strict.html -> failed

-SUCCESS
+FAILURE