381744 - Add a setOverrideCursor method to nsIDOMChromeWindow

Status: NEW

(Core :: DOM: Core & HTML, enhancement, P5)

Description

[Jonathan Watt [:jwatt]]

Attachment: patch - needs some cleanup

At Joost we have added a showCursor(boolean) method on nsIDOMChromeWindow to allow the mouse cursor to be hidden when our app is in fullscreen mode regardless of which element the cursor is over. I think this functionality could be useful for other XULRunner apps and Mozilla extensions such as Daniel Glazman's FullerScreen when used to run an S5 presentation, say. I think it should also be possible to use this functionality to implement the CSS property value cursor:none (bug 346690). Attached is the current patch from our tree. It probably needs some work to be acceptable here, but I thought I'd attach it now to avoid duplication of work.

Comment 1

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

Seems to me like nsIDOMChromeWindow.setCursor("none") should be sufficient as an API here, once cursor:none is implemented.

Comment 2

[Martijn Wargers (dead)]

So cursor:none works now. I guess this is not needed anymore?
Except the fact that bug 309547 needs to be fixed, perhaps?

Comment 3

[Jonathan Watt [:jwatt]]

It's not generally possible to use CSS to set a window-wide cursor that will override the cursor style for the whole document regardless of where the cursor is on it. You'd have to make sure your cursor:none rule had higher specificity than any other cursor rule for *every* element in the document. Not really practical.

Perhaps a better name would be nsIDOMChromeWindow.setOverrideCursor() to make it clear that it's for overriding the cursor style set by any of the window's contents.

Comment 4

[Firefox Bug Husbandry Bot]

https://bugzilla.mozilla.org/show_bug.cgi?id=1472046

Move all DOM bugs that haven’t been updated in more than 3 years and has no one currently assigned to P5.

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