[GH-ISSUE #309] Hide/show a widget in a flex layout on demand #234

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opened 2026-03-04 01:03:11 +03:00 by kerem · 4 comments

kerem commented

2026-03-04 01:03:11 +03:00

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Originally created by @lenormf on GitHub (Jun 17, 2019).
Original GitHub issue: https://github.com/rivo/tview/issues/309

Hi,

I want to hide/show a TextView widget in a Flex layout on demand, the goal would be to show contextual information depending on the state of the application (e.g. tips, completion candidates).

A proposal based on adding nil objects to the layout has been hinted at in #104, what is the status of that feature?

Thanks!

Originally created by @lenormf on GitHub (Jun 17, 2019). Original GitHub issue: https://github.com/rivo/tview/issues/309 Hi, I want to hide/show a `TextView` widget in a `Flex` layout on demand, the goal would be to show contextual information depending on the state of the application (e.g. tips, completion candidates). A proposal based on adding `nil` objects to the layout has been hinted at in #104, what is the status of that feature? Thanks!

kerem closed this issue

2026-03-04 01:03:11 +03:00

kerem commented

2026-03-04 01:03:12 +03:00

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@rivo commented on GitHub (Jun 18, 2019):

nil objects can be added to Flex, see AddItem():

You can provide a nil value for the primitive. This will still consume screen space but nothing will be drawn.

But I'm not sure that this will help you achieve what you want to do. Do you want the TextView to be temporarily empty or do you want to take it out of the layout completely? There is a RemoveItem() function.

@rivo commented on GitHub (Jun 18, 2019): `nil` objects can be added to `Flex`, see [`AddItem()`](https://godoc.org/github.com/rivo/tview#Flex.AddItem): > You can provide a nil value for the primitive. This will still consume screen space but nothing will be drawn. But I'm not sure that this will help you achieve what you want to do. Do you want the `TextView` to be temporarily empty or do you want to take it out of the layout completely? There is a [`RemoveItem()`](https://godoc.org/github.com/rivo/tview#Flex.RemoveItem) function.

kerem commented

2026-03-04 01:03:12 +03:00

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@lenormf commented on GitHub (Jun 18, 2019):

I want the TextView not to take any screen space unless I'm printing information in it, possibly without having to re-instantiate it every time I need it.

@lenormf commented on GitHub (Jun 18, 2019): I want the `TextView` not to take any screen space unless I'm printing information in it, possibly without having to re-instantiate it every time I need it.

kerem commented

2026-03-04 01:03:12 +03:00

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@rivo commented on GitHub (Jul 10, 2019):

You don't need to re-instantiate it. When you call RemoveItem(), it's just taken out of the Flex layout. You can call AddItem() with the same TextView object again.

@rivo commented on GitHub (Jul 10, 2019): You don't need to re-instantiate it. When you call `RemoveItem()`, it's just taken out of the `Flex` layout. You can call `AddItem()` with the same ` TextView` object again.

kerem commented

2026-03-04 01:03:12 +03:00

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@lenormf commented on GitHub (Jul 10, 2019):

Thanks, I'll play around with that then. Closing, in the meantime.

@lenormf commented on GitHub (Jul 10, 2019): Thanks, I'll play around with that then. Closing, in the meantime.