77 lines
2.3 KiB
JavaScript
77 lines
2.3 KiB
JavaScript
// @flow
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import { CONFERENCE_JOINED } from '../base/conference';
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import {
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DOMINANT_SPEAKER_CHANGED,
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PARTICIPANT_JOINED,
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PARTICIPANT_LEFT,
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PIN_PARTICIPANT,
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getLocalParticipant
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} from '../base/participants';
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import { MiddlewareRegistry } from '../base/redux';
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import {
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getTrackByJitsiTrack,
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TRACK_ADDED,
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TRACK_REMOVED,
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TRACK_UPDATED
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} from '../base/tracks';
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import { selectParticipant, selectParticipantInLargeVideo } from './actions';
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/**
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* Middleware that catches actions related to participants and tracks and
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* dispatches an action to select a participant depicted by LargeVideo.
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*
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* @param {Store} store - Redux store.
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* @returns {Function}
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*/
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MiddlewareRegistry.register(store => next => action => {
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const result = next(action);
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switch (action.type) {
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case DOMINANT_SPEAKER_CHANGED: {
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const localParticipant = getLocalParticipant(store.getState());
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if (localParticipant && localParticipant.id !== action.participant.id) {
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store.dispatch(selectParticipantInLargeVideo());
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}
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break;
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}
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case PARTICIPANT_JOINED:
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case PARTICIPANT_LEFT:
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case PIN_PARTICIPANT:
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case TRACK_ADDED:
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case TRACK_REMOVED:
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store.dispatch(selectParticipantInLargeVideo());
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break;
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case CONFERENCE_JOINED:
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// Ensure a participant is selected on conference join. This addresses
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// the case where video tracks were received before CONFERENCE_JOINED
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// fired; without the conference selection may not happen.
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store.dispatch(selectParticipant());
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break;
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case TRACK_UPDATED:
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// In order to minimize re-calculations, we need to select participant
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// only if the videoType of the current participant rendered in
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// LargeVideo has changed.
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if ('videoType' in action.track) {
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const state = store.getState();
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const track
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= getTrackByJitsiTrack(
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state['features/base/tracks'],
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action.track.jitsiTrack);
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const participantId = state['features/large-video'].participantId;
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(track.participantId === participantId)
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&& store.dispatch(selectParticipant());
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}
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break;
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}
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return result;
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});
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