Assigned to Art for analysis. We may want to implement for 4.3, depending on scope, etc.

Since we have been talking about creating a simpler tabset component. It would be a good opportunity to create it and include this scrollable feature. After some analysis of the html and javascript involved, it's clear that it would be feasible to code this component from scratch, without having to use a 3rd party widget.

After analysing the existing ace:tabSet code, it seems to be feasible as well to implement this feature in our existing ace:tabSet component. This would entail modifying some of the YUI code to rewire some selectors and DOM listeners, but there don't seem to be any big challenges to this.

In either case, a preliminary estimate would be one week of work to complete.

r52015: added basic scrollable tabs functionality to ace:tabSet

We're following the approach of adding this functionality to our existing ace:tabSet component, instead of creating a new component, by using the new boolean 'scrollableTabs' attribute. It was possible to add this functionality without any visible issues at the moment (pending regression tests). This functionality still needs some more polish in terms of styling, behaviour and special cases.

r52024: added logic to disable/enable scroll buttons only when applicable; refactored initial code; corrected alignments; added animation when scrolling

r52025: added scrollable tabs demo to showcase

r52028: modified behaviour to hide scroll buttons when the tabs fit in the available width; added code to reevaluate whether the scroll buttons are needed or not when dynamically adding/removing tabs; added scrollable tabs functionality to bottom orientation mode; modified yui code to avoid moving the <ul> element when in bottom orientation mode so that the scrollable tabs can display and work correctly; refactored code to apply this functionality by calling a separate function

Re-opened.

Would it be feasible to make it so if a tab that is partially obscured (off the screen) is selected, it would scroll to be fully visible on the screen?

r52435: added improvement to do some automatic scrolling on the tabs when selecting a tab that is not fully visible