feat(web): bidirectional message channel between page and background worker - #708
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ened wants to merge 3 commits into
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feat(web): bidirectional message channel between page and background worker#708ened wants to merge 3 commits into
ened wants to merge 3 commits into
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…worker Adds free-form two-way messaging between the app and the background worker, complementing request/response task execution: - WorkerProtocol: new 'message' (page -> worker) and 'workerMessage' (worker -> page) wire types - WorkmanagerExecution: messageHandler + sendToPage hooks on the Flutter-free dispatcher side - WorkmanagerWebWorker runtime: routes messages and wires sendToPage for both the dedicated Web Worker (postMessage) and the Service Worker (clients.postMessage) - WorkmanagerWeb: sendMessageToWorker() + workerMessages stream, including the in-page fallback path The web example demonstrates the channel with a live worker chat and a simulated price-watch use case (watch/stop/check messages, live ticks, and background task checks). Rebuilt web/background.dart.js.
… fewer buttons The web demo had five action buttons plus four chips stacked with the chat and the event log. Rework it around two tabs: - Worker chat: conversation + message input + three action chips - Task log: single 'Run check now' action + event list The periodic price-check task is now registered automatically on startup so the demo works with zero setup; cancel moved to the app bar menu. Status is a single line instead of a paragraph.
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Summary
Adds free-form two-way messaging between the app and the background worker on web, complementing request/response task execution.
WorkerProtocol: newmessage(page -> worker) andworkerMessage(worker -> page) wire typesWorkmanagerExecution:messageHandler+sendToPagehooks on the Flutter-free dispatcher sideWorkmanagerWebWorkerruntime: routes messages and wiressendToPagefor both the dedicated Web Worker (postMessage) and the Service Worker (clients.postMessage)WorkmanagerWeb:sendMessageToWorker()+workerMessagesstream, including the in-page fallback pathNo IsolateNameServer equivalent exists on web — this is the postMessage/IndexedDB communication model.
Verification
dart analyzeclean (package + example)flutter build webbuilds;web/background.dart.jsrebuilt