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https://issues.apache.org/jira/browse/PIVOT-458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12857602#action_12857602
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Greg Brown commented on PIVOT-458:
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Help me understand the use case for split behavior in a MenuButton. Unlike
ListButtons, MenuButtons don't maintain any kind of selection state - so what
would clicking on the just content area mean? To a large extent, MenuButtons
exist to provide access to a menu popup. The button itself doesn't really offer
much on its own.
I know that I originally suggested that this behavior belongs in MenuButton and
not ListButton, but the to-do in PIVOT-24 actually goes back a really long way,
back to when Pivot wasn't even called Pivot and was actually implemented in
JavaScript, not Java. :-) Back then, menu buttons were backed by list data,
much like list buttons, and might have one day been given support for some kind
of selection state. However, in their current incarnation, they are not data
driven, and are more like menu items that can exist outside of a menu or menu
bar. And there is still the issue of UI design. Menu buttons visually
distinguish themselves from list buttons by not drawing a divider. I'd like to
maintain that distinction.
I'm now 100% in favor of adding this behavior to ListButton - perhaps that
would be sufficient for your needs now, and we could revisit MenuButton in a
future release, if appropriate?
> ListButton: show popup only on triangle click
> ---------------------------------------------
>
> Key: PIVOT-458
> URL: https://issues.apache.org/jira/browse/PIVOT-458
> Project: Pivot
> Issue Type: Improvement
> Components: wtk-terra
> Reporter: Dirk Moebius
> Priority: Minor
> Attachments: listbutton-popup.patch, menubutton-popup.patch
>
>
> I found this to be a requirement in my application: if the user clicks the
> label part of a LinkButton, the button should fire immediately without
> showing the popup, thus invoking the action with the currently selected
> entry. If the user clicks the triangle part, the popup should be shown.
> I patched LinkButton to add a new boolean property called
> "showPopupOnTriggerClickOnly" to TerraListButtonSkin (I couldn't think of a
> better name, sorry). If set to true, the ListButton popup will only show up
> if the user clicks the triangle, but not if the user clicks the rest of the
> button. However, ButtonPressListeners fire as usual, if the user clicks any
> part of the button. If the property is false, the behavior is as it was
> before. The default value of the property is false.
> I tested the patch in my application and ComponentExplorer and it works good.
> It would be nice if you integrate the patch. Otherwise I'd still have the
> option to write a custom skin, but I think this patch could be interesting to
> other developers as well.
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