ofjustpy-react

Programatics

Setup

uistate paths are seeded from ui_app_trmap
if path is not in appstate, then its not updated.

event handler to ui-state updates

decorate with @ojr.CfgLoopRunner
return spath, svalue

The ojr framework will update appstate path spath with svalue

reactctx for stubs: for appstat to ui-update

add reactctx to stubs

oj.Span_("aspan", placeholder="dummy text",
                 reactctx = [ojr.Ctx("/cfgbase/type", ojr.isstr, ojr.UIOps.UPDATE_TEXT)]
                 )

checkout ./ofjustpy-react/unit_tests/td.py

Webapp state management

modeling state and its transitions

State variables

appstate

owned by session_manager

uistate

owned by ojr.WebPage

State transitions

ui_app_trmap

defines changes to appstate for uistate changes

app_actions_trmap

defines actions to be taken on appstate changes

appctx_uiupdate_map

defines transformation to ui-elements for changes to appstate changes. Transformations include enable, hide/unhide/ update the text, etc.

The update pipeline

update_uistate

event_handler calls this to update uistate at spath with value

update_loop

this is invoked after following sequence of events:

user performs actions
event_handler is fired
uistate is updated

The update_loop does following

update appstate (using ui_app_trmap and changes to uistate)
invoke actions based on appstate changes and app_actions_trmap (this can introduce further appstate)
update ui-components bases on appstate changes and appctx_uiupdate_map

Action annotations

ojr.AppctxTrigger()

Annotate an action. Registers the action to be invoked when appstate has changed at path path.

sandeep-gh/ofjustpy-react