TextArea does not support the clipboard (RISCOS Cloverleaf)

Hello,

Me needs to use multiline input control and I take the TextArea but it does seems not supporting the clipboard, at least Ctrl-C, Ctrl-V does not work on it.
I this its because not a Wimp control but Toolbox custom control.
Is there a possibility to make clipboard work for TextArea?

Yes we can :-)
I built a prototype to implement these features.
Not very easy, but RISC OS allows it and that’s a good thing.
I am using TextArea with my version of PariGP and without these editing features it was pretty frustrating.
Prototype
TextareaCutPaste

To test….
Jean-Michel

Clipboard support for TextGadgets is in the big list, so if you’re lucky it might appear through the bounty work at some point.

Using the Clipboard module, it turns out that cut and paste in a TextArea is not too difficult ¹, but I had to learn the module first.

The available documentation covers much more than Fred Graute’s implementation of CaP in his Clipboard module, so as part of my learning I have wrtten a small StrongHelp manual for it. This is with Fred for checking, and will be available “real soon”.

This Clipboard module is only available by asking Fred, yet is is a ROOL project. It is nowhere here, and seems to be abandoned. Can I urge that it be made available and then worked on to implement the rest of the specification. It would be a real boon.

My TextArea demo app with CaP is not really suitable for publication just yet, but it does ^Z ^X ^C ^V ^K ^A just as you would expect, and ^S to pop-up a SaveAs to drag the whole text or a selection.

¹ TextArea has some awkard subtext bugs that have to be worked around.

My TextArea demo app with CaP is not really suitable for publication just yet

I think I am ready to let it out in the wild, but it may be a fragile beast. As it uses my Oobi (Object Oriented BASIC Interface) system the code might look a little strange. ;-)

http://www.kappa.me.uk/Miscellaneous/swTextArea010.zip

Oobi doesn’t work :-(

When I try to run it, it gives abort on data transfer at &FC055A44. I went through the !Run line-by-line and it happens in Oobi.Base. The Debugger dump isn’t very helpful, but it mentions FileSwitch, ResourceFS, and lots of Recursion in MessageTrans. (OS 5.28/RPCEmu)

Oobi doesn’t work :-(

Oh dear! I said it might be fragile. ;-(

I am running on a mini.m with 5.25 still. Those errors make some sense.

Was is just as you double-clicked Oobi?

If others have similar problems on real hardware I will withdraw it and make a version using the original libraries. More memory, but what the h**l. ;-)

Was is just as you double-clicked Oobi?

Yes. I just tried it on RPi 5.28 and Oobi runs fine.

I just tried it on RPi 5.28 and Oobi runs fine.

That is a relief. And TextArea?

Kind of … I mean it runs, but sometimes ^X does a paste, and I occaisionally get “Too many nested structures” at line 531 in Toolbox. I am using VNC though so I don’t know if that makes any difference.

My fault, I think. I am using DIM LOCAL for the temporary buffer needed when copying and pasting, I am asking for the size, but I have forgotten to allow for the terminator that has to be added. This works, on average, 3 out of 4 times. On the fourth I end up overwriting the BASIC stack. ;-(

I shall redo the code, with some other additions, and see how things go.

There is an updated TextArea test app which might have some of those bugs cleared up.

There is a StrongHelp manual for the Clipboard which might be useful. It is included in the app above.