More PageEvent Triggers

[shroominic]

I think we need more ways to trigger PageEvents like

• OnPageLoad
• OnFormSubmit
• FromJSScript?

[samuelcolvin]

on page load should be covered by the FireEvent component:

FastUI/src/python-fastui/fastui/components/__init__.py

Lines 240 to 243 in 6b7c7cb

	class FireEvent(_p.BaseModel, extra='forbid'):
	event: events.AnyEvent
	message: _t.Union[str, None] = None # defaults to blank
	type: _t.Literal['FireEvent'] = 'FireEvent'

on form submit was done in #93:

FastUI/src/python-fastui/fastui/components/forms.py

Line 78 in 6b7c7cb

submit_trigger: _t.Union[events.PageEvent, None] = pydantic.Field(default=None, serialization_alias='submitTrigger')

from JS should be pretty easy since page events are just CustomEvents called on the document itself:

FastUI/src/npm-fastui/src/events.ts

Line 57 in 6b7c7cb

document.dispatchEvent(new CustomEvent(pageEventType(event), { detail }))

I guess we could export a wrapper for this?

[shroominic]

Uhh nice thanks! Was searching in the .venv/lib but its not yet released so I will pull from git and try to implement streaming responses to fastui-chat!