## Summary
added a base prop for selectedWorkflow to allow loading a workflow on
launch
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(fix, feature, docs, etc), the "why" and the "how". Screenshots or
videos are useful for frontend changes.-->
## Related Issues / Discussions
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## QA Instructions
can test by loading InvokeAIUI with a selectedWorkflow prop of the
workflow ID
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PR. Provide enough detail that a reviewer can reproduce your tests.-->
## Merge Plan
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- Enforce name is present and not an empty string
- Provide empty string as default for positive and negative prompt
- Add `positive_prompt` as validation alias for `prompt` field
- Strip whitespace automatically
- Create `TypeAdapter` to validate the whole list in one go
Currently translated at 98.5% (1336 of 1355 strings)
translationBot(ui): update translation (Italian)
Currently translated at 98.5% (1302 of 1321 strings)
translationBot(ui): update translation (Italian)
Currently translated at 98.6% (1302 of 1320 strings)
Co-authored-by: Riccardo Giovanetti <riccardo.giovanetti@gmail.com>
Translate-URL: https://hosted.weblate.org/projects/invokeai/web-ui/it/
Translation: InvokeAI/Web UI
## Summary
Adds prompt templates to the UI. Demo video is attached.
* added default prompt templates to seed database on startup (these
cannot be edited or deleted by users via the UI)
* can create fresh prompt template, create from an image in gallery that
has prompt metadata, or copy an existing prompt template and modify
* if a template is active, can view what your prompt will be invoked as
by switching to "view mode"
https://github.com/user-attachments/assets/32d84e0c-b04c-48da-bae5-aa6eb685d209
## Related Issues / Discussions
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discord. If this PR closes an issue, please use the "Closes #1234"
format, so that the issue will be automatically closed when the PR
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## QA Instructions
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## Merge Plan
<!--WHEN APPLICABLE: Large PRs, or PRs that touch sensitive things like
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## Checklist
- [ ] _The PR has a short but descriptive title, suitable for a
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- [ ] _Tests added / updated (if applicable)_
- [ ] _Documentation added / updated (if applicable)_
Around the time we (I) implemented pydantic events, I noticed a short pause between progress images every 4 or 5 steps when generating with SDXL. It didn't happen with SD1.5, but I did notice that with SD1.5, we'd get 4 or 5 progress events simultaneously. I'd expect one event every ~25ms, matching my it/s with SD1.5. Mysterious!
Digging in, I found an issue is related to our use of a synchronous queue for events. When the event queue is empty, we must call `asyncio.sleep` before checking again. We were sleeping for 100ms.
Said another way, every time we clear the event queue, we have to wait 100ms before another event can be dispatched, even if it is put on the queue immediately after we start waiting. In practice, this means our events get buffered into batches, dispatched once every 100ms.
This explains why I was getting batches of 4 or 5 SD1.5 progress events at once, but not the intermittent SDXL delay.
But this 100ms wait has another effect when the events are put on the queue in intervals that don't perfectly line up with the 100ms wait. This is most noticeable when the time between events is >100ms, and can add up to 100ms delay before the event is dispatched.
For example, say the queue is empty and we start a 100ms wait. Then, immediately after - like 0.01ms later - we push an event on to the queue. We still need to wait another 99.9ms before that event will be dispatched. That's the SDXL delay.
The easy fix is to reduce the sleep to something like 0.01 seconds, but this feels kinda dirty. Can't we just wait on the queue and dispatch every event immediately? Not with the normal synchronous queue - but we can with `asyncio.Queue`.
I switched the events queue to use `asyncio.Queue` (as seen in this commit), which lets us asynchronous wait on the queue in a loop.
Unfortunately, I ran into another issue - events now felt like their timing was inconsistent, but in a different way than with the 100ms sleep. The time between pushing events on the queue and dispatching them was not consistently ~0ms as I'd expect - it was highly variable from ~0ms up to ~100ms.
This is resolved by passing the asyncio loop directly into the events service and using its methods to create the task and interact with the queue. I don't fully understand why this resolved the issue, because either way we are interacting with the same event loop (as shown by `asyncio.get_running_loop()`). I suppose there's some scheduling magic happening.
