[6240] Ability to call arrangeAll on diagrams from outside the component

[OrlannC]

Bug: #6240

Pull request template

General purpose

What is the main goal of this pull request?

• Bug fixes
• New features
• Documentation
• Cleanup
• Tests
• Build / releng

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Architectural decision records (ADR)

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Dependencies

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Frontend

This section is not relevant if your contribution does not come with changes to the frontend.

General purpose

• Is the code properly tested? (Plain old JavaScript tests for business code and tests based on React Testing Library for the components)

Typing

We need to improve the typing of our code, as such, we require every contribution to come with proper TypeScript typing for both changes contributing new files and those modifying existing files.
Please ensure that the following statements are true for each file created or modified (this may require you to improve code outside of your contribution).

• Variables have a proper type
• Functions’ arguments have a proper type
• Functions’ return type are specified
• Hooks are properly typed:
  • useMutation<DATA_TYPE, VARIABLE_TYPE>(…)
  • useQuery<DATA_TYPE, VARIABLE_TYPE>(…)
  • useSubscription<DATA_TYPE, VARIABLE_TYPE>(…)
  • useMachine<CONTEXT_TYPE, EVENTS_TYPE>(…)
  • useState<STATE_TYPE>(…)
• All components have a proper typing for their props
• No useless optional chaining with ?. (if the GraphQL API specifies that a field cannot be null, do not treat it has potentially null for example)
• Nullable values have a proper type (for example let diagram: Diagram | null = null;)

Backend

This section is not relevant if your contribution does not come with changes to the backend.

General purpose

• Are all the event handlers tested?
• Are the event processor tested?
• Is the business code (services) tested?
• Are diagram layout changes tested?

Architecture

• Are data structure classes properly separated from behavioral classes?
• Are all the relevant fields final?
• Is any data structure mutable? If so, please write a comment indicating why
• Are behavioral classes either stateless or side effect free?

Review

How to test this PR?

It can be tested by calling the new applyLayout method on a diagram workbench handle. For example by obtaining the handle from another view with workbench.getDisplayedRepresentationHandle() and calling the applyLayout method.

• Has the Kiwi TCMS test suite been updated with tests for this contribution?

[sbegaudeau]

This is only necessary for diagrams, it has no reason to exist for other representations. None of this should impact other representations or the workbench itself.

[OrlannC]

I removed the impacts on the other representations