Factor-out GroupStore and create GroupStoreCache

In order to provide feedback when adding a room to a group, the group summarry store needs to be extended to store the list of rooms in a group. This commit is the first step required.

The next step is to get the GroupRoomList listening to updates from GroupStore and expose the list of rooms from GroupStore.

(We're running out of words to describe the hierachy of things that store things)

src/GroupAddressPicker.js

@@ -19,6 +19,7 @@ import sdk from './';
 import MultiInviter from './utils/MultiInviter';
 import { _t } from './languageHandler';
 import MatrixClientPeg from './MatrixClientPeg';
+import GroupStoreCache from './stores/GroupStoreCache';
 
 export function showGroupInviteDialog(groupId) {
     const AddressPickerDialog = sdk.getComponent("dialogs.AddressPickerDialog");
@@ -86,10 +87,11 @@ function _onGroupInviteFinished(groupId, addrs) {
 }
 
 function _onGroupAddRoomFinished(groupId, addrs) {
+    const groupStore = GroupStoreCache.getGroupStore(MatrixClientPeg.get(), groupId);
     const errorList = [];
     return Promise.all(addrs.map((addr) => {
-        return MatrixClientPeg.get()
-            .addRoomToGroup(groupId, addr.address)
+        return groupStore
+            .addRoomToGroup(addr.address)
             .catch(() => { errorList.push(addr.address); })
             .reflect();
     })).then(() => {

src/components/structures/GroupView.js

@@ -27,7 +27,8 @@ import AccessibleButton from '../views/elements/AccessibleButton';
 import Modal from '../../Modal';
 import classnames from 'classnames';
 
-import GroupSummaryStore from '../../stores/GroupSummaryStore';
+import GroupStoreCache from '../../stores/GroupStoreCache';
+import GroupStore from '../../stores/GroupStore';
 
 const RoomSummaryType = PropTypes.shape({
     room_id: PropTypes.string.isRequired,
@@ -78,7 +79,7 @@ const CategoryRoomList = React.createClass({
                 if (!success) return;
                 const errorList = [];
                 Promise.all(addrs.map((addr) => {
-                    return this.context.groupSummaryStore
+                    return this.context.groupStore
                         .addRoomToGroupSummary(addr.address)
                         .catch(() => { errorList.push(addr.address); })
                         .reflect();
@@ -157,7 +158,7 @@ const FeaturedRoom = React.createClass({
     onDeleteClicked: function(e) {
         e.preventDefault();
         e.stopPropagation();
-        this.context.groupSummaryStore.removeRoomFromGroupSummary(
+        this.context.groupStore.removeRoomFromGroupSummary(
             this.props.summaryInfo.room_id,
         ).catch((err) => {
             console.error('Error whilst removing room from group summary', err);
@@ -252,7 +253,7 @@ const RoleUserList = React.createClass({
                 if (!success) return;
                 const errorList = [];
                 Promise.all(addrs.map((addr) => {
-                    return this.context.groupSummaryStore
+                    return this.context.groupStore
                         .addUserToGroupSummary(addr.address)
                         .catch(() => { errorList.push(addr.address); })
                         .reflect();
@@ -327,7 +328,7 @@ const FeaturedUser = React.createClass({
     onDeleteClicked: function(e) {
         e.preventDefault();
         e.stopPropagation();
-        this.context.groupSummaryStore.removeUserFromGroupSummary(
+        this.context.groupStore.removeUserFromGroupSummary(
             this.props.summaryInfo.user_id,
         ).catch((err) => {
             console.error('Error whilst removing user from group summary', err);
@@ -373,14 +374,14 @@ const FeaturedUser = React.createClass({
     },
 });
 
-const GroupSummaryContext = {
-    groupSummaryStore: React.PropTypes.instanceOf(GroupSummaryStore).isRequired,
+const GroupContext = {
+    groupStore: React.PropTypes.instanceOf(GroupStore).isRequired,
 };
 
-CategoryRoomList.contextTypes = GroupSummaryContext;
-FeaturedRoom.contextTypes = GroupSummaryContext;
-RoleUserList.contextTypes = GroupSummaryContext;
-FeaturedUser.contextTypes = GroupSummaryContext;
+CategoryRoomList.contextTypes = GroupContext;
+FeaturedRoom.contextTypes = GroupContext;
+RoleUserList.contextTypes = GroupContext;
+FeaturedUser.contextTypes = GroupContext;
 
 export default React.createClass({
     displayName: 'GroupView',
@@ -390,12 +391,12 @@ export default React.createClass({
     },
 
     childContextTypes: {
-        groupSummaryStore: React.PropTypes.instanceOf(GroupSummaryStore),
+        groupStore: React.PropTypes.instanceOf(GroupStore),
     },
 
     getChildContext: function() {
         return {
-            groupSummaryStore: this._groupSummaryStore,
+            groupStore: this._groupStore,
         };
     },
 
@@ -413,14 +414,14 @@ export default React.createClass({
 
     componentWillMount: function() {
         this._changeAvatarComponent = null;
-        this._initGroupSummaryStore(this.props.groupId);
+        this._initGroupStore(this.props.groupId);
 
         MatrixClientPeg.get().on("Group.myMembership", this._onGroupMyMembership);
     },
 
     componentWillUnmount: function() {
         MatrixClientPeg.get().removeListener("Group.myMembership", this._onGroupMyMembership);
-        this._groupSummaryStore.removeAllListeners();
+        this._groupStore.removeAllListeners();
     },
 
     componentWillReceiveProps: function(newProps) {
@@ -429,7 +430,7 @@ export default React.createClass({
                 summary: null,
                 error: null,
             }, () => {
-                this._initGroupSummaryStore(newProps.groupId);
+                this._initGroupStore(newProps.groupId);
             });
         }
     },
@@ -440,17 +441,15 @@ export default React.createClass({
         this.setState({membershipBusy: false});
     },
 
-    _initGroupSummaryStore: function(groupId) {
-        this._groupSummaryStore = new GroupSummaryStore(
-            MatrixClientPeg.get(), this.props.groupId,
-        );
-        this._groupSummaryStore.on('update', () => {
+    _initGroupStore: function(groupId) {
+        this._groupStore = GroupStoreCache.getGroupStore(MatrixClientPeg.get(), groupId);
+        this._groupStore.on('update', () => {
             this.setState({
-                summary: this._groupSummaryStore.getSummary(),
+                summary: this._groupStore.getSummary(),
                 error: null,
             });
         });
-        this._groupSummaryStore.on('error', (err) => {
+        this._groupStore.on('error', (err) => {
             this.setState({
                 summary: null,
                 error: err,
@@ -527,7 +526,7 @@ export default React.createClass({
                 editing: false,
                 summary: null,
             });
-            this._initGroupSummaryStore(this.props.groupId);
+            this._initGroupStore(this.props.groupId);
         }).catch((e) => {
             this.setState({
                 saving: false,
@@ -606,7 +605,7 @@ export default React.createClass({
         this.setState({
             publicityBusy: true,
         });
-        this._groupSummaryStore.setGroupPublicity(publicity).then(() => {
+        this._groupStore.setGroupPublicity(publicity).then(() => {
             this.setState({
                 publicityBusy: false,
             });

src/stores/GroupStore.js

@@ -17,9 +17,10 @@ limitations under the License.
 import EventEmitter from 'events';
 
 /**
- * Stores the group summary for a room and provides an API to change it
+ * Stores the group summary for a room and provides an API to change it and
+ * other useful group APIs may have an effect on the group summary.
  */
-export default class GroupSummaryStore extends EventEmitter {
+export default class GroupStore extends EventEmitter {
     constructor(matrixClient, groupId) {
         super();
         this._groupId = groupId;
@@ -45,6 +46,11 @@ export default class GroupSummaryStore extends EventEmitter {
         return this._summary;
     }
 
+    addRoomToGroup(roomId) {
+        return this._matrixClient
+            .addRoomToGroup(this._groupId, roomId);
+    }
+
     addRoomToGroupSummary(roomId, categoryId) {
         return this._matrixClient
             .addRoomToGroupSummary(this._groupId, roomId, categoryId)

src/stores/GroupStoreCache.js

@@ -0,0 +1,37 @@
+/*
+Copyright 2017 New Vector Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import GroupStore from './GroupStore';
+
+class GroupStoreCache {
+    constructor() {
+        this.groupStores = {};
+    }
+
+    getGroupStore(matrixClient, groupId) {
+        if (!this.groupStores[groupId]) {
+            this.groupStores[groupId] = new GroupStore(matrixClient, groupId);
+        }
+        return this.groupStores[groupId];
+    }
+}
+
+
+let singletonGroupStoreCache = null;
+if (!singletonGroupStoreCache) {
+    singletonGroupStoreCache = new GroupStoreCache();
+}
+module.exports = singletonGroupStoreCache;