feat(groups): add virtual scrolling at groups list

client/src/components/AddToGroupModal/index.jsx

@@ -1,4 +1,5 @@
 import React, { useEffect } from "react";
+import { List } from "react-virtualized";
 import PT from "prop-types";
 
 import Button from "../Button";
@@ -159,6 +160,42 @@ export default function AddToGroupModal({ onCancel, updateUser, user }) {
     setFilter("");
   };
 
+  const filteredOtherGroups = otherGroups.filter((g) =>
+    g.name.toLowerCase().includes(filter.toLowerCase())
+  );
+  const filteredMyGroups = myGroups.filter((g) =>
+    g.name.toLowerCase().includes(filter.toLowerCase())
+  );
+
+  const myGroupsListEstimatedWidth = filteredMyGroups.length > 10 ? 540 : 560;
+  const otherGroupsListEstimatedWidth =
+    filteredOtherGroups.length > 10 ? 540 : 560;
+  const listWidth =
+    myGroupsListEstimatedWidth > otherGroupsListEstimatedWidth
+      ? myGroupsListEstimatedWidth
+      : otherGroupsListEstimatedWidth;
+
+  /**
+   * Row renderer for react-virtualized#List.
+   * Renders each item as a row.
+   * @param {String} key unique key for the item
+   * @param {Number} index index of the item (row)
+   * @param {Object} style
+   * @return {SectionRow} row element
+   */
+  function rowRenderer({ key, index, style, items }) {
+    return (
+      <div key={key} style={style}>
+        <Group
+          checked={items[index].isSelected === true}
+          group={items[index]}
+          key={items[index].id}
+          onSwitch={() => switchSelected(items[index])}
+        />
+      </div>
+    );
+  }
+
   return (
     <Modal
       onCancel={onCancel}
@@ -201,19 +238,22 @@ export default function AddToGroupModal({ onCancel, updateUser, user }) {
           My groups{loadingGroups && " (Loading...)"}
         </h3>
         <div>
-          {!loadingGroups &&
-            myGroups
-              .filter((g) =>
-                g.name.toLowerCase().includes(filter.toLowerCase())
-              )
-              .map((g) => (
-                <Group
-                  checked={g.isSelected === true}
-                  group={g}
-                  key={g.id}
-                  onSwitch={() => switchSelected(g)}
-                />
-              ))}
+          {!loadingGroups && (
+            <List
+              className={style.groupsList}
+              width={listWidth}
+              height={
+                filteredMyGroups.length > 10
+                  ? 450
+                  : filteredMyGroups.length * 45
+              }
+              rowCount={filteredMyGroups.length}
+              rowHeight={45}
+              rowRenderer={(params) =>
+                rowRenderer({ ...params, items: filteredMyGroups })
+              }
+            />
+          )}
         </div>
         {myGroups.filter((g) =>
           g.name.toLowerCase().includes(filter.toLowerCase())
@@ -225,19 +265,22 @@ export default function AddToGroupModal({ onCancel, updateUser, user }) {
           Other Groups{loadingGroups && " (Loading...)"}
         </h3>
         <div>
-          {!loadingGroups &&
-            otherGroups
-              .filter((g) =>
-                g.name.toLowerCase().includes(filter.toLowerCase())
-              )
-              .map((g) => (
-                <Group
-                  checked={g.isSelected === true}
-                  group={g}
-                  key={g.id}
-                  onSwitch={() => switchSelected(g)}
-                />
-              ))}
+          {!loadingGroups && (
+            <List
+              className={style.groupsList}
+              width={listWidth}
+              height={
+                filteredOtherGroups.length > 10
+                  ? 450
+                  : filteredOtherGroups.length * 45
+              }
+              rowCount={filteredOtherGroups.length}
+              rowHeight={45}
+              rowRenderer={(params) =>
+                rowRenderer({ ...params, items: filteredOtherGroups })
+              }
+            />
+          )}
         </div>
         {otherGroups.filter((g) =>
           g.name.toLowerCase().includes(filter.toLowerCase())

client/src/components/AddToGroupModal/style.module.scss

@@ -48,6 +48,10 @@
   overflow-y: auto;
 }
 
+.groupsList {
+  outline: 0;
+}
+
 .search {
   background: $lightGray2;
   border: none;

client/src/components/GroupsSideMenu/filters.js

@@ -1,4 +1,5 @@
 import React, { useState, useEffect } from "react";
+import { List } from "react-virtualized";
 import PT from "prop-types";
 
 import SearchBox from "../searchBox";
@@ -133,23 +134,42 @@ function GroupsSection({
   selectedItemId,
   loadingGroups,
 }) {
+  /**
+   * Row renderer for react-virtualized#List.
+   * Renders each item as a row.
+   * @param {String} key unique key for the item
+   * @param {Number} index index of the item (row)
+   * @param {Object} style
+   * @return {SectionRow} row element
+   */
+  function rowRenderer({ key, index, style }) {
+    return (
+      <div key={key} style={style}>
+        <SectionRow
+          key={`${title}${index}`}
+          title={items[index].name}
+          badge={items[index].count + ""}
+          action={(isSelected) =>
+            !isSelected && onItemClicked && onItemClicked(title, items[index])
+          }
+          selected={items[index].id === selectedItemId}
+        />
+      </div>
+    );
+  }
+
   return (
     <>
       <div className={styles.sectionTitle}>{title}</div>
       <div className={styles.sectionItemsContainer}>
-        {items.map((item, index) => {
-          return (
-            <SectionRow
-              key={`${title}${index}`}
-              title={item.name}
-              badge={item.count + ""}
-              action={(isSelected) =>
-                !isSelected && onItemClicked && onItemClicked(title, item)
-              }
-              selected={item.id === selectedItemId}
-            />
-          );
-        })}
+        <List
+          className={styles.groupsList}
+          width={385}
+          height={items.length > 7 ? 450 : items.length * 66}
+          rowCount={items.length}
+          rowHeight={66}
+          rowRenderer={rowRenderer}
+        />
       </div>
       {items.length === 0 && !loadingGroups && (
         <div className={styles.message}>No results found</div>
@@ -173,6 +193,7 @@ function SectionRow({ title, badge, selected = false, action }) {
       onClick={() => {
         action(selected);
       }}
+      title={title}
     >
       <div
         className={

client/src/components/GroupsSideMenu/filters.module.css

@@ -73,6 +73,10 @@
   flex-direction: column;
 }
 
+.groupsList {
+  outline: 0;
+}
+
 .sectionItemsContainer > div {
   margin-top: 20px;
 }
@@ -101,8 +105,11 @@
 }
 
 .sectionItemTitle {
+  width: 280px;
+  overflow: hidden;
+  white-space: nowrap;
+  text-overflow: ellipsis;
   color: gray2;
-  word-break: break-all;
   padding-right: 12px;
 }
 

client/src/config.js

@@ -6,6 +6,7 @@ export default {
   API_URL: process.env.REACT_APP_API_URL,
   API_PREFIX: process.env.REACT_APP_API_PREFIX,
   GROUPS_API_URL: process.env.REACT_APP_GROUPS_API_URL,
+  GROUPS_PER_PAGE: process.env.REACT_APP_GROUPS_PER_PAGE || 1000,
 
   BULK_UPLOAD_TEMPLATE_ID: process.env.REACT_APP_BULK_UPLOAD_TEMPLATE_ID,
   EMSI_SKILLPROVIDER_ID: process.env.REACT_APP_EMSI_SKILLPROVIDER_ID,

client/src/lib/groups.js

@@ -39,7 +39,7 @@ export async function getGroups(apiClient, handle, cancelToken) {
   // Now, get my groups first
   try {
     response = await apiClient.get(
-      `${config.GROUPS_API_URL}?universalUID=${userId}&membershipType=user`,
+      `${config.GROUPS_API_URL}?universalUID=${userId}&membershipType=user&perPage=${config.GROUPS_PER_PAGE}`,
       { cancelToken }
     );
   } catch (error) {
@@ -66,7 +66,7 @@ export async function getGroups(apiClient, handle, cancelToken) {
   // Fetch all groups in the org
   try {
     response = await apiClient.get(
-      `${config.GROUPS_API_URL}?organizationId=${organizationId}`,
+      `${config.GROUPS_API_URL}?organizationId=${organizationId}&perPage=${config.GROUPS_PER_PAGE}`,
       { cancelToken }
     );
   } catch (error) {

package.json

@@ -37,6 +37,7 @@
     "lodash": "^4.17.19",
     "multer": "^1.4.2",
     "node-cache": "^5.1.0",
+    "react-virtualized": "^9.21.2",
     "swagger-ui-express": "^4.1.4",
     "tc-bus-api-wrapper": "topcoder-platform/tc-bus-api-wrapper.git#feature/auth0-proxy-server",
     "tc-core-library-js": "github:appirio-tech/tc-core-library-js#v2.6.4",