Top-level space "hijacking"

[jerrykan]

If I create a new public space Fruit that I am an admin of then it will show up as a top-level space in the spaces sidebar. However at some point in the future some other person with no connection for the original Fruit space might create a public Food space and decide to add Fruit as a subspace. If I (or another user who is already a member of the Fruit space) decides to join the Food space then suddenly I no longer have the Fruit space show up as a top-level space in the sidebar.

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As a user if you aren't paying attention you might not even notice that Fruit is now a sub-space and just notice that it is missing from the top-level spaces. Assuming you even know what has happened you need to click through all the spaces/sub-spaces to find which one it is in.

As an admin of the Fruit space but not the Food space it also seems rather counter-intuitive that I need to click through other spaces to get to the space I'm an admin of to manage it.

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At a minimum for the user there should be a way to pin a sub-space (ie. Fruit) as a top-level space. When you first join a space that is not already a sub-space of another space you are in when you first join it, it should be pinned by default. If at a later point the you find yourself as a member of a top-level space (ie. Food) and a pinned sub-space (ie. Fruit) you can then unpin the sub-space.

For admins it might be desirable to somehow mark a space as not being able to be added as a sub-space to a non-private space.

[jerrykan]

Thinking about this a little bit more there are probably implication for how notifications are treated if a sub-space is pinned to the top level.

If Fruit is a sub-space of Food and Fruit is pinned to the top level, personally I would want notifications for the Fruit sub-space to only show up on the Fruit space in the side-bar and not the Food space as well.

[MoKe12g]

Despite the age of this topic, i would like to have this feature added to at least element-web. I've created an implementation here (https://github.com/MoKe12g/matrix-react-sdk/tree/space-pin) calling it space pinning.
My implementation (in the element-web / matrix-react-sdk) is that in the function "SpaceStore.ts" while creating the spaces list inside the findRootSpaces checks for every space, if the localStorage key mx_space_pin_${roomId} is true, to then add the space also as an primary space.
I haven't yet thought about how to handle notifications, since i haven't looked far enough in the codebase to know how notifications for different spaces are handled.

[ShadowJonathan]

This issue is still relevant, our community space got "subsumed" into another community space, which just wanted to include us because we seemed relevant. As a result, I can't pin the space to the sidebar and quickly access it, I have to put this relatively irrelevant community space on the top, to navigate there.

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@MoKe12g did you make a PR?

Also, for this to be considered, i'd guess that Element would want the "pinned" spaces to be stored in account data, you can maybe look towards Cinny for inspiration/compatibility.

[MoKe12g]

i didn't made a PR yet. There are still some things, i need to fix first before creating a PR.

[ShadowJonathan]

@MBybee your issue got marked as duplicate, there's no "not planned" to this issue, it's just a part of triage and keeping down duplicate issues

[ara4n]

it was marked as a duplicate of this bug, which is still open.