Martijn Wargers (dead) Reporter
	Description • 19 years ago

See upcoming testcase.
You should be able to drag with the scrollbarthumb in the iframe.
This works in a 2006-01-25 build, but doesn't work anymore in a 2006-01-26 build.

The testcase consists of an onscroll event listener that changes the location of the iframe while scrolling. After that the scrollbar of the iframe seems to have become unusable to scroll with.

	Robert O'Callahan (:roc) (email my personal email if necessary) Assignee
	Comment 2 • 19 years ago

This is what happens:
-- IFRAME document scrollbar grabs the mouse
-- IFRAME gets reframed, scrollbar is destroyed, pushes the grab up to the nearest enclosing view that isn't destroyed: this is the nsSubDocumentFrame's inner view, which doesn't have a frame
-- mouse button released: the mouse event goes to presshell::HandleEvent, which sees there is no view and because it has dispatchUsingCoordinates, none of the cases fire and the event is lost --- capture is not released
-- future mouse events are captured by the inner view and lost in the same way

We need to do something with mouse events to views without frames. This patch redirects them to the nearest enclosing view with a frame.

	David Baron :dbaron:
	Comment 3 • 19 years ago

Comment on attachment 210931 [details] [diff] [review]
fix

Please merge this with the code right below that's doing the same thing for KEY and IME events instead.

(You'll be stuck with testing for (aEvent->message != NS_CONTEXTMENU_KEY && !NS_IS_FOCUS_EVENT(aEvent)) unless you want to change those too; the former doesn't scare me, but the latter does, a little.)

	Robert O'Callahan (:roc) (email my personal email if necessary) Assignee
	Comment 4 • 19 years ago

Updated to comments

	Robert O'Callahan (:roc) (email my personal email if necessary) Assignee
	Comment 5 • 19 years ago

checked in

	Stephen Donner [:stephend] Not actively reading bugmail
	Comment 6 • 19 years ago

Verified FIXED using build 2006-02-28-09 with SeaMonkey trunk on Windows XP.

Testcase: https://bugzilla.mozilla.org/attachment.cgi?id=210801&action=view