wireKeyboard() with WS play/pause already working for keyboard shortcuts
phase
provides
05-live-show-execution/05-01
WebSocket cue scheduler with is_playing gate and UDP dispatch
Mouse-initiated play/pause now sends WebSocket messages to server
Server is_playing flag correctly set for both mouse and keyboard playback
UDP cue scheduler fires for mouse-triggered playback
05-live-show-execution
added
patterns
audio element 'play'/'pause' event listeners send WS messages alongside UI updates — same pattern as wireKeyboard()
created
modified
lightsync/frontend/app.js
Audio element event listeners are the correct hook for mouse play/pause — they fire for all triggers (button click, keyboard, programmatic), so WS messages are sent exactly once regardless of source
Idempotent WS messages: both wireAudio() and wireKeyboard() send play/pause — harmless because server handlers set a boolean flag
SHW-03
UI-03
UI-04
1min
2026-04-07
Phase 05 Plan 04: Mouse Play/Pause WebSocket Fix Summary
Audio element event listeners now forward play/pause state to server via WebSocket, enabling UDP cue scheduling for mouse-initiated playback
Performance
Duration: ~1 min
Started: 2026-04-07T10:36:50Z
Completed: 2026-04-07T10:37:27Z
Tasks: 1
Files modified: 1
Accomplishments
Added client.send({ type: 'play', position: audio.currentTime }) to the audio 'play' event listener in wireAudio()
Added client.send({ type: 'pause', position: audio.currentTime }) to the audio 'pause' event listener in wireAudio()
Server is_playing flag now becomes True when playback is started via the transport bar mouse button
UDP cue scheduler (LOOKAHEAD=60ms) now fires animation commands for mouse-initiated shows, not just keyboard Space shortcut
lightsync/frontend/app.js — Added client.send() calls to 'play' and 'pause' event listeners in wireAudio() (lines 135-136)
Decisions Made
Audio element event listeners ('play'/'pause') are the correct hook rather than modifying the button click handler. These events fire for ALL triggers — button click, keyboard shortcuts, or programmatic audio.play()/audio.pause() calls — ensuring the WS message fires exactly once per state change. Both wireAudio() and wireKeyboard() sending the same WS messages is harmless: the server handlers are idempotent (they set is_playing to a boolean value).
Deviations from Plan
None - plan executed exactly as written.
Issues Encountered
None.
User Setup Required
None - no external service configuration required.
Next Phase Readiness
Gap closure complete: mouse play/pause now correctly triggers server-side cue scheduling
All 11 truths from Phase 05 verification should now be satisfied (previously 9/11)