jiti-meet/react/features/filmstrip/middleware.web.js

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// @flow
import { batch } from 'react-redux';
import VideoLayout from '../../../modules/UI/videolayout/VideoLayout';
import {
DOMINANT_SPEAKER_CHANGED,
getDominantSpeakerParticipant,
getLocalParticipant,
getLocalScreenShareParticipant,
PARTICIPANT_JOINED,
PARTICIPANT_LEFT
} from '../base/participants';
import { MiddlewareRegistry } from '../base/redux';
import { CLIENT_RESIZED } from '../base/responsive-ui';
import { SETTINGS_UPDATED } from '../base/settings';
import {
getCurrentLayout,
LAYOUTS,
setTileView
} from '../video-layout';
import {
ADD_STAGE_PARTICIPANT,
CLEAR_STAGE_PARTICIPANTS,
REMOVE_STAGE_PARTICIPANT,
SET_MAX_STAGE_PARTICIPANTS,
SET_USER_FILMSTRIP_WIDTH,
TOGGLE_PIN_STAGE_PARTICIPANT
} from './actionTypes';
import {
addStageParticipant,
removeStageParticipant,
setFilmstripHeight,
setFilmstripWidth,
setStageParticipants
} from './actions';
import {
ACTIVE_PARTICIPANT_TIMEOUT,
DEFAULT_FILMSTRIP_WIDTH,
MAX_ACTIVE_PARTICIPANTS,
MIN_STAGE_VIEW_HEIGHT,
MIN_STAGE_VIEW_WIDTH,
TOP_FILMSTRIP_HEIGHT
} from './constants';
import {
isFilmstripResizable,
updateRemoteParticipants,
updateRemoteParticipantsOnLeave,
getActiveParticipantsIds,
getPinnedActiveParticipants,
isStageFilmstripAvailable
} from './functions';
import './subscriber';
/**
* Map of timers.
*
* @type {Map}
*/
const timers = new Map();
/**
* The middleware of the feature Filmstrip.
*/
MiddlewareRegistry.register(store => next => action => {
if (action.type === PARTICIPANT_LEFT) {
// This has to be executed before we remove the participant from features/base/participants state in order to
// remove the related thumbnail component before we need to re-render it. If we do this after next()
// we will be in sitation where the participant exists in the remoteParticipants array in features/filmstrip
// but doesn't exist in features/base/participants state which will lead to rendering a thumbnail for
// non-existing participant.
updateRemoteParticipantsOnLeave(store, action.participant?.id);
}
let result;
switch (action.type) {
case CLIENT_RESIZED: {
const state = store.getState();
if (isFilmstripResizable(state)) {
const { width: filmstripWidth, topPanelHeight } = state['features/filmstrip'];
const { clientWidth, clientHeight } = action;
let height, width;
if (filmstripWidth.current > clientWidth - MIN_STAGE_VIEW_WIDTH) {
width = Math.max(clientWidth - MIN_STAGE_VIEW_WIDTH, DEFAULT_FILMSTRIP_WIDTH);
} else {
width = Math.min(clientWidth - MIN_STAGE_VIEW_WIDTH, filmstripWidth.userSet);
}
if (width !== filmstripWidth.current) {
store.dispatch(setFilmstripWidth(width));
}
if (topPanelHeight.current > clientHeight - MIN_STAGE_VIEW_HEIGHT) {
height = Math.max(clientHeight - MIN_STAGE_VIEW_HEIGHT, TOP_FILMSTRIP_HEIGHT);
} else {
height = Math.min(clientHeight - MIN_STAGE_VIEW_HEIGHT, topPanelHeight.userSet);
}
if (height !== topPanelHeight.current) {
store.dispatch(setFilmstripHeight(height));
}
}
break;
}
case PARTICIPANT_JOINED: {
result = next(action);
if (action.participant?.isLocalScreenShare) {
break;
}
updateRemoteParticipants(store, action.participant?.id);
break;
}
case SETTINGS_UPDATED: {
if (typeof action.settings?.localFlipX === 'boolean') {
// TODO: This needs to be removed once the large video is Reactified.
VideoLayout.onLocalFlipXChanged();
}
if (action.settings?.disableSelfView) {
const state = store.getState();
const local = getLocalParticipant(state);
const localScreenShare = getLocalScreenShareParticipant(state);
const activeParticipantsIds = getActiveParticipantsIds(state);
if (activeParticipantsIds.find(id => id === local.id)) {
store.dispatch(removeStageParticipant(local.id));
}
if (localScreenShare) {
if (activeParticipantsIds.find(id => id === localScreenShare.id)) {
store.dispatch(removeStageParticipant(localScreenShare.id));
}
}
}
break;
}
case SET_USER_FILMSTRIP_WIDTH: {
VideoLayout.refreshLayout();
break;
}
case ADD_STAGE_PARTICIPANT: {
const { dispatch, getState } = store;
const { participantId, pinned } = action;
const state = getState();
const { activeParticipants, maxStageParticipants } = state['features/filmstrip'];
let queue;
if (activeParticipants.find(p => p.participantId === participantId)) {
queue = activeParticipants.filter(p => p.participantId !== participantId);
queue.push({
participantId,
pinned
});
const tid = timers.get(participantId);
clearTimeout(tid);
timers.delete(participantId);
} else if (activeParticipants.length < maxStageParticipants) {
queue = [ ...activeParticipants, {
participantId,
pinned
} ];
} else {
const notPinnedIndex = activeParticipants.findIndex(p => !p.pinned);
if (notPinnedIndex === -1) {
if (pinned) {
queue = [ ...activeParticipants, {
participantId,
pinned
} ];
queue.shift();
}
} else {
queue = [ ...activeParticipants, {
participantId,
pinned
} ];
queue.splice(notPinnedIndex, 1);
}
}
// If queue is undefined we haven't made any changes to the active participants. This will mostly happen
// if the participant that we are trying to add is not pinned and all slots are currently taken by pinned
// participants.
// IMPORTANT: setting active participants to undefined will crash jitsi-meet.
if (typeof queue !== 'undefined') {
dispatch(setStageParticipants(queue));
if (!pinned) {
const timeoutId = setTimeout(() => dispatch(removeStageParticipant(participantId)),
ACTIVE_PARTICIPANT_TIMEOUT);
timers.set(participantId, timeoutId);
}
}
if (getCurrentLayout(state) === LAYOUTS.TILE_VIEW) {
dispatch(setTileView(false));
}
break;
}
case REMOVE_STAGE_PARTICIPANT: {
const state = store.getState();
const { participantId } = action;
const tid = timers.get(participantId);
clearTimeout(tid);
timers.delete(participantId);
const dominant = getDominantSpeakerParticipant(state);
if (participantId === dominant?.id) {
const timeoutId = setTimeout(() => store.dispatch(removeStageParticipant(participantId)),
ACTIVE_PARTICIPANT_TIMEOUT);
timers.set(participantId, timeoutId);
return;
}
break;
}
case DOMINANT_SPEAKER_CHANGED: {
const { id } = action.participant;
const state = store.getState();
const stageFilmstrip = isStageFilmstripAvailable(state);
const local = getLocalParticipant(state);
const currentLayout = getCurrentLayout(state);
if (id === local.id || currentLayout === LAYOUTS.TILE_VIEW) {
break;
}
if (stageFilmstrip) {
const isPinned = getPinnedActiveParticipants(state).some(p => p.participantId === id);
store.dispatch(addStageParticipant(id, Boolean(isPinned)));
}
break;
}
case PARTICIPANT_LEFT: {
const state = store.getState();
const { id } = action.participant;
const activeParticipantsIds = getActiveParticipantsIds(state);
if (activeParticipantsIds.find(pId => pId === id)) {
const tid = timers.get(id);
const { activeParticipants } = state['features/filmstrip'];
clearTimeout(tid);
timers.delete(id);
store.dispatch(setStageParticipants(activeParticipants.filter(p => p.participantId !== id)));
}
break;
}
case SET_MAX_STAGE_PARTICIPANTS: {
const { maxParticipants } = action;
const { activeParticipants } = store.getState()['features/filmstrip'];
const newMax = Math.min(MAX_ACTIVE_PARTICIPANTS, maxParticipants);
action.maxParticipants = newMax;
if (newMax < activeParticipants.length) {
const toRemove = activeParticipants.slice(0, activeParticipants.length - newMax);
batch(() => {
toRemove.forEach(p => store.dispatch(removeStageParticipant(p.participantId)));
});
}
break;
}
case TOGGLE_PIN_STAGE_PARTICIPANT: {
const { dispatch, getState } = store;
const state = getState();
const { participantId } = action;
const pinnedParticipants = getPinnedActiveParticipants(state);
const dominant = getDominantSpeakerParticipant(state);
if (pinnedParticipants.find(p => p.participantId === participantId)) {
if (dominant?.id === participantId) {
const { activeParticipants } = state['features/filmstrip'];
const queue = activeParticipants.map(p => {
if (p.participantId === participantId) {
return {
participantId,
pinned: false
};
}
return p;
});
dispatch(setStageParticipants(queue));
} else {
dispatch(removeStageParticipant(participantId));
}
} else {
dispatch(addStageParticipant(participantId, true));
}
break;
}
case CLEAR_STAGE_PARTICIPANTS: {
const activeParticipants = getActiveParticipantsIds(store.getState());
activeParticipants.forEach(pId => {
const tid = timers.get(pId);
clearTimeout(tid);
timers.delete(pId);
});
}
}
return result ?? next(action);
});