Finalize grid mode

cypress/integration/twilio-video.spec.js

@@ -11,7 +11,14 @@ const getRoomName = () =>
 context('A video app user', () => {
   describe('before entering a room', () => {
     it('should see their audio level indicator moving in the media device panel', () => {
-      cy.visit('/');
+      // These tests were written before Grid View was implemented. This app now activates
+      // Grid View by default, so here we activate Presentation View before visiting the app so 
+      // that the tests can pass.
+      cy.visit('/', {
+        onBeforeLoad: window => {
+          window.localStorage.setItem('grid-view-active-key', false);
+        },
+      });
 
       cy.get('#input-user-name').type('testuser');
       cy.get('#input-room-name').type(getRoomName());

cypress/plugins/index.js

@@ -19,6 +19,14 @@ module.exports = (on, config) => {
         args,
       });
       const page = (participants[name] = await browser.newPage()); // keep track of this participant for future use
+
+      // These tests were written before Grid View was implemented. This app now activates
+      // Grid View by default, so here we activate Presentation View before visiting the app so
+      // that the tests can pass.
+      await page.evaluateOnNewDocument(() => {
+        localStorage.clear();
+        localStorage.setItem('grid-view-active-key', false);
+      });
       await page.goto(config.baseUrl);
       await page.type('#input-user-name', name);
       await page.type('#input-room-name', roomName);

cypress/support/commands.js

@@ -1,7 +1,14 @@
 import detectSound from './detectSound';
 
 Cypress.Commands.add('joinRoom', (username, roomname) => {
-  cy.visit('/');
+  // These tests were written before Grid View was implemented. This app now activates
+  // Grid View by default, so here we activate Presentation View before visiting the app so
+  // that the tests can pass.
+  cy.visit('/', {
+    onBeforeLoad: window => {
+      window.localStorage.setItem('grid-view-active-key', false);
+    },
+  });
   cy.get('#input-user-name').type(username);
   cy.get('#input-room-name').type(roomname);
   cy.get('[type="submit"]').click();

src/components/DeviceSelectionDialog/MaxGridParticipants/MaxGridParticipants.tsx

@@ -2,7 +2,7 @@ import React from 'react';
 import { FormControl, MenuItem, Typography, Select, Grid } from '@material-ui/core';
 import { useAppState } from '../../../state';
 
-const MAX_PARTICIPANT_OPTIONS = [9, 16, 25, 36, 49];
+const MAX_PARTICIPANT_OPTIONS = [4, 9, 16, 25];
 
 export default function MaxGridParticipants() {
   const { maxGridParticipants, setMaxGridParticipants } = useAppState();

src/components/GridView/GridView.test.tsx

@@ -3,7 +3,7 @@ import { GridView } from './GridView';
 import { shallow } from 'enzyme';
 import useGridLayout from '../../hooks/useGridLayout/useGridLayout';
 import { useAppState } from '../../state';
-import { usePagination } from '../../hooks/usePagination/usePagination';
+import { usePagination } from './usePagination/usePagination';
 
 const mockLocalParticipant = { identity: 'test-local-participant', sid: 0 };
 const mockParticipants = [
@@ -14,10 +14,10 @@ const mockParticipants = [
 ];
 
 jest.mock('../../constants', () => ({
-  GRID_MODE_ASPECT_RATIO: 9 / 16,
-  GRID_MODE_MARGIN: 3,
+  GRID_VIEW_ASPECT_RATIO: 9 / 16,
+  GRID_VIEW_MARGIN: 3,
 }));
-jest.mock('../../hooks/useCollaborationParticipants/useCollaborationParticipants', () => () => mockParticipants);
+jest.mock('../../hooks/usePresentationParticipants/usePresentationParticipants', () => () => mockParticipants);
 jest.mock('../../hooks/useVideoContext/useVideoContext', () => () => ({
   room: {
     localParticipant: mockLocalParticipant,
@@ -30,7 +30,7 @@ jest.mock('../../hooks/useGridLayout/useGridLayout', () =>
   }))
 );
 
-jest.mock('../../hooks/usePagination/usePagination', () => ({
+jest.mock('./usePagination/usePagination', () => ({
   usePagination: jest.fn(() => ({
     currentPage: 2,
     totalPages: 4,
@@ -50,7 +50,7 @@ describe('the GridView component', () => {
   it('should render correctly', () => {
     const wrapper = shallow(<GridView />);
     expect(wrapper).toMatchSnapshot();
-    expect(useGridLayout).toHaveBeenCalledWith(5);
+    expect(useGridLayout).toHaveBeenCalledWith(9);
   });
 
   it('should not render the previous page button when the user is viewing the first page', () => {

src/components/GridView/GridView.tsx

@@ -2,80 +2,85 @@ import React from 'react';
 import ArrowBack from '@material-ui/icons/ArrowBack';
 import ArrowForward from '@material-ui/icons/ArrowForward';
 import clsx from 'clsx';
-import { GRID_MODE_ASPECT_RATIO, GRID_MODE_MARGIN } from '../../constants';
-import { IconButton, makeStyles } from '@material-ui/core';
+import { GRID_VIEW_ASPECT_RATIO, GRID_VIEW_MARGIN } from '../../constants';
+import { IconButton, makeStyles, createStyles, Theme } from '@material-ui/core';
 import { Pagination } from '@material-ui/lab';
 import Participant from '../Participant/Participant';
 import useGridLayout from '../../hooks/useGridLayout/useGridLayout';
 import useVideoContext from '../../hooks/useVideoContext/useVideoContext';
-import { usePagination } from '../../hooks/usePagination/usePagination';
+import { usePagination } from './usePagination/usePagination';
 import useDominantSpeaker from '../../hooks/useDominantSpeaker/useDominantSpeaker';
 import useGridParticipants from '../../hooks/useGridParticipants/useGridParticipants';
+import { useAppState } from '../../state';
 
 const CONTAINER_GUTTER = '50px';
 
-const useStyles = makeStyles({
-  container: {
-    position: 'relative',
-    gridArea: '1 / 1 / 2 / 3',
-  },
-  participantContainer: {
-    position: 'absolute',
-    display: 'flex',
-    top: CONTAINER_GUTTER,
-    right: CONTAINER_GUTTER,
-    bottom: CONTAINER_GUTTER,
-    left: CONTAINER_GUTTER,
-    margin: '0 auto',
-    alignContent: 'center',
-    flexWrap: 'wrap',
-    justifyContent: 'center',
-  },
-  buttonContainer: {
-    position: 'absolute',
-    top: 0,
-    bottom: 0,
-    display: 'flex',
-    alignItems: 'center',
-    justifyContent: 'center',
-  },
+const useStyles = makeStyles((theme: Theme) =>
+  createStyles({
+    container: {
+      background: theme.gridViewBackgroundColor,
+      position: 'relative',
+      gridArea: '1 / 1 / 2 / 3',
+    },
+    participantContainer: {
+      position: 'absolute',
+      display: 'flex',
+      top: CONTAINER_GUTTER,
+      right: CONTAINER_GUTTER,
+      bottom: CONTAINER_GUTTER,
+      left: CONTAINER_GUTTER,
+      margin: '0 auto',
+      alignContent: 'center',
+      flexWrap: 'wrap',
+      justifyContent: 'center',
+    },
+    buttonContainer: {
+      position: 'absolute',
+      top: 0,
+      bottom: 0,
+      display: 'flex',
+      alignItems: 'center',
+      justifyContent: 'center',
+    },
 
-  buttonContainerLeft: {
-    right: `calc(100% - ${CONTAINER_GUTTER})`,
-    left: 0,
-  },
-  buttonContainerRight: {
-    right: 0,
-    left: `calc(100% - ${CONTAINER_GUTTER})`,
-  },
-  pagination: {
-    '& .MuiPaginationItem-root': {
-      color: 'white',
+    buttonContainerLeft: {
+      right: `calc(100% - ${CONTAINER_GUTTER})`,
+      left: 0,
+    },
+    buttonContainerRight: {
+      right: 0,
+      left: `calc(100% - ${CONTAINER_GUTTER})`,
+    },
+    pagination: {
+      '& .MuiPaginationItem-root': {
+        color: 'white',
+      },
+    },
+    paginationButton: {
+      color: 'black',
+      background: 'rgba(255, 255, 255, 0.8)',
+      width: '40px',
+      height: '40px',
+      '&:hover': {
+        background: 'rgba(255, 255, 255)',
+      },
     },
-  },
-  paginationButton: {
-    color: 'black',
-    background: 'rgba(255, 255, 255, 0.8)',
-    width: '40px',
-    height: '40px',
-    '&:hover': {
-      background: 'rgba(255, 255, 255)',
+    paginationContainer: {
+      position: 'absolute',
+      top: `calc(100% - ${CONTAINER_GUTTER})`,
+      right: 0,
+      bottom: 0,
+      left: 0,
+      display: 'flex',
+      alignItems: 'center',
+      justifyContent: 'center',
     },
-  },
-  paginationContainer: {
-    position: 'absolute',
-    top: `calc(100% - ${CONTAINER_GUTTER})`,
-    right: 0,
-    bottom: 0,
-    left: 0,
-    display: 'flex',
-    alignItems: 'center',
-    justifyContent: 'center',
-  },
-});
+  })
+);
 
 export function GridView() {
   const classes = useStyles();
+  const { maxGridParticipants } = useAppState();
   const { room } = useVideoContext();
   const gridParticipants = useGridParticipants();
   const dominantSpeaker = useDominantSpeaker(true);
@@ -85,10 +90,11 @@ export function GridView() {
     ...gridParticipants,
   ]);
 
-  const { participantVideoWidth, containerRef } = useGridLayout(paginatedParticipants.length);
+  const gridLayoutParticipantCount = currentPage === 1 ? paginatedParticipants.length : maxGridParticipants;
+  const { participantVideoWidth, containerRef } = useGridLayout(gridLayoutParticipantCount);
 
   const participantWidth = `${participantVideoWidth}px`;
-  const participantHeight = `${Math.floor(participantVideoWidth * GRID_MODE_ASPECT_RATIO)}px`;
+  const participantHeight = `${Math.floor(participantVideoWidth * GRID_VIEW_ASPECT_RATIO)}px`;
 
   return (
     <div className={classes.container}>
@@ -125,7 +131,7 @@ export function GridView() {
         {paginatedParticipants.map(participant => (
           <div
             key={participant.sid}
-            style={{ width: participantWidth, height: participantHeight, margin: GRID_MODE_MARGIN }}
+            style={{ width: participantWidth, height: participantHeight, margin: GRID_VIEW_MARGIN }}
           >
             <Participant
               participant={participant}

src/hooks/usePagination/usePagination.test.ts → src/components/GridView/usePagination/usePagination.test.ts

@@ -1,8 +1,8 @@
 import { renderHook, act } from '@testing-library/react-hooks';
-import { useAppState } from '../../state';
+import { useAppState } from '../../../state';
 import { usePagination } from './usePagination';
 
-jest.mock('../../state');
+jest.mock('../../../state');
 
 const mockUseAppState = useAppState as jest.Mock<any>;
 
@@ -32,7 +32,7 @@ describe('the usePagination hook', () => {
     act(() => {
       result.current.setCurrentPage(4);
     });
-    expect(result.current.paginatedParticipants).toEqual([8, 9, 10]);
+    expect(result.current.paginatedParticipants).toEqual([10]);
     expect(result.current.currentPage).toBe(4);
   });
 
@@ -45,12 +45,12 @@ describe('the usePagination hook', () => {
       result.current.setCurrentPage(4);
     });
 
-    expect(result.current.paginatedParticipants).toEqual([8, 9, 10]);
+    expect(result.current.paginatedParticipants).toEqual([10]);
     expect(result.current.totalPages).toBe(4);
 
     rerender({ participants: [1, 2, 3, 4, 5] });
 
-    expect(result.current.paginatedParticipants).toEqual([3, 4, 5]);
+    expect(result.current.paginatedParticipants).toEqual([4, 5]);
     expect(result.current.totalPages).toBe(2);
 
     rerender({ participants: [1, 2, 3] });
@@ -78,7 +78,7 @@ describe('the usePagination hook', () => {
       result.current.setCurrentPage(4);
     });
 
-    expect(result.current.paginatedParticipants).toEqual([8, 9, 10]);
+    expect(result.current.paginatedParticipants).toEqual([10]);
     expect(result.current.totalPages).toBe(4);
 
     mockUseAppState.mockImplementation(() => ({ maxGridParticipants: 2 }));
@@ -92,16 +92,16 @@ describe('the usePagination hook', () => {
     const { result, rerender } = renderHook(() => usePagination([1, 2, 3, 4, 5, 6, 7, 8, 9, 10] as any[]));
 
     act(() => {
-      result.current.setCurrentPage(4);
+      result.current.setCurrentPage(3);
     });
 
-    expect(result.current.paginatedParticipants).toEqual([8, 9, 10]);
+    expect(result.current.paginatedParticipants).toEqual([7, 8, 9]);
     expect(result.current.totalPages).toBe(4);
 
     mockUseAppState.mockImplementation(() => ({ maxGridParticipants: 4 }));
     rerender();
 
-    expect(result.current.paginatedParticipants).toEqual([7, 8, 9, 10]);
+    expect(result.current.paginatedParticipants).toEqual([9, 10]);
     expect(result.current.totalPages).toBe(3);
   });
 });

src/hooks/usePagination/usePagination.ts → src/components/GridView/usePagination/usePagination.ts

@@ -1,13 +1,12 @@
 import { useState, useEffect } from 'react';
 import { Participant } from 'twilio-video';
-import { useAppState } from '../../state';
+import { useAppState } from '../../../state';
 
 export function usePagination(participants: Participant[]) {
   const [currentPage, setCurrentPage] = useState(1); // Pages are 1 indexed
   const { maxGridParticipants } = useAppState();
 
   const totalPages = Math.ceil(participants.length / maxGridParticipants);
-  const isLastPage = currentPage === totalPages;
   const isBeyondLastPage = currentPage > totalPages;
 
   useEffect(() => {
@@ -16,16 +15,10 @@ export function usePagination(participants: Participant[]) {
     }
   }, [isBeyondLastPage, totalPages]);
 
-  let paginatedParticipants;
-
-  if (isLastPage) {
-    paginatedParticipants = participants.slice(-maxGridParticipants);
-  } else {
-    paginatedParticipants = participants.slice(
-      (currentPage - 1) * maxGridParticipants,
-      currentPage * maxGridParticipants
-    );
-  }
+  let paginatedParticipants = participants.slice(
+    (currentPage - 1) * maxGridParticipants,
+    currentPage * maxGridParticipants
+  );
 
   return { paginatedParticipants, setCurrentPage, currentPage, totalPages };
 }