Hi,
I'm wondering whether Morphic currently supports any way to hinder a morph from being ever given mouse focus. There are multiple scenarios where I could need something like this.
For example. an Autocompletion menu morph should never gain mouse focus https://github.com/MrModder/Autocompletion/issues/31#issue-472835222 , but currently it overrides #handleMouseEnter: and transfers the focus to its containing morph. The problem with this approach seems to me to be that, when hovering the menu morph, the MouseOverHandler first sends #mouseLeave: to the containing text morph -- before the menu morph can decide to forward the focus event. Ultimately, the focus is consistent, but I do not want #mouseLeave: to be sent at all, as some text morphs https://github.com/hpi-swa-teaching/SpreadSheetTool/tree/master/packages/SpreadSheetTool-Core.package/SSHybridTextMorph.class may show undesirable behavior when loosing focus.
I am also running another project where I never want a morph to gain mouse focus from a similar reason. The only Morph in Squeak I remember to never gain focus is the HaloMorph, what is apparently achieved by an extra-check in PasteUpMorph>>#filterEvent:for: where the event is ignored in #tryInvokeHaloFor: before passing it to MouseOverHandler. Manipulating a PasteUpMorph method does not seem appropriate for a small tool.
tl;dr: Is it possible to forbid a morph to gain focus at the expense of the current focused morph? If not, would you know any better approach? Or would this even be a possible feature proposal for squeak/dev? Thanks in advance!
Best, Christoph
-- Sent from: http://forum.world.st/Squeak-Beginners-f107673.html