[Feature Request]: Upgrade Primary, Title, Subtitle and Stories blocks to the new v7 blocks API

[JReinhold]

Is your feature request related to a problem? Please describe

Storybook v7 introduced a new API for doc blocks that is based on an of prop and change in parameters location. See https://storybook.js.org/blog/storybook-7-docs/#doc-blocks-api-is-powerful-yet-simple

However the blocks Primary, Title and Subtitle were not fully migrated to the new API.

Describe the solution you'd like

Each block should be changed to match the general blocks API, similar to how eg. the Description block is implemented: https://github.com/storybookjs/storybook/blob/next/code/ui/blocks/src/blocks/Description.tsx
It's important that the changes are backwards compatible, and the current usage is still supported, but with a deprecation warning.

Primary

• Add support for of prop via useOf - only the "meta" type is valid here
• Document changes
• Add stories
• Make sure it is backwards compatible - should still work with name prop, or no prop at all (infers the current component)

Title

• Add support for of prop via useOf - only the "meta" type is valid here
• Document changes
• Add stories
• Make sure it is backwards compatible - children prop should not be deprecated

Subtitle — #22552 by @joaonunomota

• Add support for of prop via useOf - only the "meta" type is valid here
• Default to extracting content from parameters.docs.subtitle
• Deprecate extracting content from parameters.componentSubtitle
• Document changes
• Add stories
• Make sure it is backwards compatible - children prop should not be deprecated.

Stories

• Add support for of prop via useOf - only the "meta" type is valid here
• Default to get title from parameters.docs.stories.title
• Default to get includePrimaryStory from parameters.docs.stories.includePrimaryStory
• Document changes
• Add stories

Additional context

These changes are rather small, so they can be made in one PR or in 4 different PRs. Any new or experienced contributor is free to pick these up.

Note
Anyone are free to work on these issues, you don't need to "reserve" it by asking here, just open a pull request with your work when you're done.

[yannbf]

@italoteix this is something you might like to contribute to!

[imevanc]

@yannbf is this issue open to anyone who wants to contribute?

[imevanc]

@yannbf is this issue open to anyone who wants to contribute?

@yannbf @JReinhold

[kylegach]

@yannbf is this issue open to anyone who wants to contribute?

Yes, absolutely! Let us know if you need any assistance.

Someone already tackled Subtitle, btw. #22552

[imevanc]

@yannbf is this issue open to anyone who wants to contribute?

Yes, absolutely! Let us know if you need any assistance.

Someone already tackled Subtitle, btw. #22552

Fab! Will raise a PR later this week.

[Beadko]

May I pick up the Title?

[JReinhold]

Go ahead @Beadko

[ssingh3856]

May i pick up Primary / Stories?

[Idan-Garay]

May I pick the Primary block?

[JReinhold]

I've assigned @ssingh3856 to Stories and @Idan-Garay to Primary.

[Arpan3323]

I see that there are people already working on each of the blocks but if there is something else that needs to be taken care of feel free to assign it to me.

[Dvinod28]

Hi, is this issue still open, Can I work on this issue?

[Dvinod28]

@JReinhold can I work on this issue, is this still open?

[JReinhold]

@Dvinod1 and anyone else, you're free to open a pull request that fixes any of this. From now on no one is "reserving" a block here, anyone can open a PR.