TabGroup.mcc

In an upcoming project I am building a MUI application which manages one document per tab. I prefer this design to managing documents in separate windows.

MUI provides a Group subclass called Register which displays each of its children on a separate page. The group has a strip of tabs along the top to identify and change pages.

Register would be a good fit were it not for one problem: the set of pages is static. As the user opens and closes documents I need to add and remove pages. This was resolved in a later version of MUI but classic Amigas generally run MUI 3.8. Later builds targeted PPC and RTG for acceptable performance.

TabGroup.mcc to the rescue! Thanks to the extensibility of MUI, and to the BOOPSI foundation that it builds upon, I was able to adapt the Group class to fit my needs. Here is a summary of improvements I’ve made:

• Tabs can be added, removed, renamed, and dragged/dropped
• Display one page per tab, or the same page on all tabs
• Mimics the look and feel of the Register class
• User preferences for tab size, padding, font, and background

User preferences are implemented as a MUI settings module:

TabGroup.mcc will be released on Aminet once I have finished testing it. For now the source code and binary package are available on GitHub.