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Bug 102902

Summary:	Disabled ScrollBar responds to mouse scroll wheel
Product:	[Eclipse Project] Platform	Reporter:	Ralph <rodkeyrr>
Component:	SWT	Assignee:	Platform-SWT-Inbox <platform-swt-inbox>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	minor
Priority:	P3	CC:	billy.biggs, cocoakevin, ericwill
Version:	4.7	Keywords:	triaged
Target Milestone:	---
Hardware:	PC
OS:	Linux-GTK
Whiteboard:

Description Ralph

2005-07-06 14:03:17 EDT

ScrollBar.setEnabled(false) prevents the user from dragging the bars, but the
ScrollBar still responds to mouse wheel scrolls.

Comment 1 Billy Biggs

2005-07-07 18:01:33 EDT

Nifty!

Comment 2 Eric Williams

2016-08-05 10:45:57 EDT

This is still reproducible for me.

This bodes for a discussion: the API states that a disabled control should be drawn with an inactive or grayed look, which in this case it is. It also states that the disabled control isn't selectable from the UI, which in this case it isn't.

However it doesn't say anything about the control being totally disabled, because we can still scroll using the mouse wheel. Technically no API is being violated, but then it seems a bit misleading to have scroll bars be scrollable if they are "disabled". Moving to the SWT inbox.

Comment 3 Eric Williams

2018-11-30 17:05:07 EST

I don't think there is a way to implement this in Scrollbar, so from my POV the API is doing it's job. Presumably if someone wanted to disable scrolling entirely they would specify it at an individual widget level.