2056 additional deepgrow workflow events

[wyli]

Signed-off-by: Wenqi Li wenqil@nvidia.com

Fixes #2056

Description

this PR adds two new events to IterationEvents, which are useful for advanced workflows and debugging.
it's tested with the deepgrow workflow

Status

Ready

Types of changes

• Non-breaking change (fix or new feature that would not break existing functionality).
• New tests added to cover the changes.
• Integration tests passed locally by running ./runtests.sh -f -u --net --coverage.
• Quick tests passed locally by running ./runtests.sh --quick --unittests.
• In-line docstrings updated.
• Documentation updated, tested make html command in the docs/ folder.

[Nic-Ma]

Thanks for your quick PR.
I put some comments for a minor issue, others look good to me.

Thanks.

[wyli]

theattach method is in fact incorrect, interaction.attach(engine) gives

ValueError: Error adding <monai.apps.deepgrow.interaction.Interaction object at 0x7fa719b25d10> 
'handler': takes parameters ['engine', 'batchdata'] but will be called with [](missing a required argument: 'engine').

[Nic-Ma]

Thanks for your quick update.
Looks good to me now.

Thanks.