[Tabs] Ability to set TabContext value from children

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Summary 💡

Hey, it would be great to be able to switch tabs from within the tab content. Currently I have to drill props down to be able to access React state variable that stores active tab.

Examples 🌈

import TabContext, { useTabContext } from "@material-ui/lab/TabContext";

// ...

const [activeTab, setActiveTab] = useTabContext();

Motivation 🔦

Right now to achieve that I have to drill props or wrap tabs with my custom context provider that can do similar thing.

[oliviertassinari]

@lukejagodzinski Let’s hold on to this feature request, we will reconsider if we get more requests 😃

[eps1lon]

I think this is better suited as a userland implementation. You could just as well expose setActiveTab via context and read from that. Otherwise it gets really tricky to reason about what is controlling the value.