mirror of
https://github.com/ether/etherpad-lite.git
synced 2025-04-23 08:56:17 -04:00
collab_client: Use class syntax to improve readability
This commit is contained in:
Richard Hansen
parent
5f80c3f3c9
commit
e5375fe425
1 changed files with 229 additions and 228 deletions
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@ -53,28 +53,28 @@ class TaskQueue {
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}
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}
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/** Call this when the document is ready, and a new Ace2Editor() has been created and inited.
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ACE's ready callback does not need to have fired yet.
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"serverVars" are from calling doc.getCollabClientVars() on the server. */
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const getCollabClient = (ace2editor, serverVars, initialUserInfo, pad) => {
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const editor = ace2editor;
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class CollabClient {
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constructor(ace2editor, serverVars, initialUserInfo, pad) {
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this.commitDelay = 500; // public so that tests can be sped up
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let rev = serverVars.rev;
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let committing = false;
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let stateMessage;
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let channelState = 'CONNECTING';
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let lastCommitTime = 0;
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let startConnectTime = Date.now();
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let commitDelay = 500;
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this._editor = ace2editor;
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this._initialUserInfo = initialUserInfo;
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this._pad = pad;
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const userId = initialUserInfo.userId;
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// var socket;
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const userSet = {}; // userId -> userInfo
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userSet[userId] = initialUserInfo;
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this._rev = serverVars.rev;
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this._committing = false;
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this._stateMessage;
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this._channelState = 'CONNECTING';
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this._lastCommitTime = 0;
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this._startConnectTime = Date.now();
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let isPendingRevision = false;
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this._userId = this._initialUserInfo.userId;
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this._userSet = {}; // userId -> userInfo
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this._userSet[this._userId] = this._initialUserInfo;
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const callbacks = {
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this._isPendingRevision = false;
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this._callbacks = {
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onUserJoin: () => {},
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onUserLeave: () => {},
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onUpdateUserInfo: () => {},
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@ -85,10 +85,10 @@ const getCollabClient = (ace2editor, serverVars, initialUserInfo, pad) => {
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onServerMessage: () => {},
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};
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// We need to present a working interface even before the socket is connected for the first time.
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// Use a Gate to block actions until connected. Once connected, the Gate is opened which causes
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// post-connect actions to start running.
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let connectedGate = new Gate();
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// We need to present a working interface even before the socket is connected for the first
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// time. Use a Gate to block actions until connected. Once connected, the Gate is opened which
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// causes post-connect actions to start running.
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this._connectedGate = new Gate();
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if (browser.firefox) {
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// Prevent "escape" from taking effect and canceling a comet connection;
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@ -100,103 +100,113 @@ const getCollabClient = (ace2editor, serverVars, initialUserInfo, pad) => {
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});
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}
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const handleUserChanges = () => {
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if (editor.getInInternationalComposition()) {
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// handleUserChanges() will be called again once composition ends so there's no need to set up
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// a future call before returning.
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this._serverMessageTaskQueue = new TaskQueue();
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this._idleFuncs = [];
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this.addHistoricalAuthors(serverVars.historicalAuthorData);
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this._tellAceActiveAuthorInfo(this._initialUserInfo);
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this._editor.setProperty('userAuthor', this._userId);
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this._editor.setBaseAttributedText(serverVars.initialAttributedText, serverVars.apool);
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this._editor.setUserChangeNotificationCallback(() => this._handleUserChanges());
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}
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_handleUserChanges() {
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if (this._editor.getInInternationalComposition()) {
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// _handleUserChanges() will be called again once composition ends so there's no need to set
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// up a future call before returning.
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return;
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}
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const now = Date.now();
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const connecting = ['CONNECTING', 'RECONNECTING'].includes(channelState);
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if (!pad.socket || connecting) {
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if (connecting && now - startConnectTime > 20000) {
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setChannelState('DISCONNECTED', 'initsocketfail');
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const connecting = ['CONNECTING', 'RECONNECTING'].includes(this._channelState);
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if (!this._pad.socket || connecting) {
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if (connecting && now - this._startConnectTime > 20000) {
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this.setChannelState('DISCONNECTED', 'initsocketfail');
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} else {
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// check again in a bit
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setTimeout(handleUserChanges, 1000);
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setTimeout(() => this._handleUserChanges(), 1000);
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}
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return;
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}
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if (committing) {
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if (now - lastCommitTime > 20000) {
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if (this._committing) {
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if (now - this._lastCommitTime > 20000) {
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// a commit is taking too long
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setChannelState('DISCONNECTED', 'slowcommit');
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} else if (now - lastCommitTime > 5000) {
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callbacks.onConnectionTrouble('SLOW');
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this.setChannelState('DISCONNECTED', 'slowcommit');
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} else if (now - this._lastCommitTime > 5000) {
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this._callbacks.onConnectionTrouble('SLOW');
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} else {
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// run again in a few seconds, to detect a disconnect
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setTimeout(handleUserChanges, 3000);
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setTimeout(() => this._handleUserChanges(), 3000);
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}
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return;
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}
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const earliestCommit = lastCommitTime + commitDelay;
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const earliestCommit = this._lastCommitTime + this.commitDelay;
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if (now < earliestCommit) {
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setTimeout(handleUserChanges, earliestCommit - now);
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setTimeout(() => this._handleUserChanges(), earliestCommit - now);
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return;
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}
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let sentMessage = false;
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// Check if there are any pending revisions to be received from server.
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// Allow only if there are no pending revisions to be received from server
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if (!isPendingRevision) {
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const userChangesData = editor.prepareUserChangeset();
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if (!this._isPendingRevision) {
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const userChangesData = this._editor.prepareUserChangeset();
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if (userChangesData.changeset) {
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lastCommitTime = now;
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committing = true;
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stateMessage = {
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this._lastCommitTime = now;
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this._committing = true;
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this._stateMessage = {
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type: 'USER_CHANGES',
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baseRev: rev,
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baseRev: this._rev,
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changeset: userChangesData.changeset,
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apool: userChangesData.apool,
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};
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sendMessage(stateMessage);
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this.sendMessage(this._stateMessage);
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sentMessage = true;
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callbacks.onInternalAction('commitPerformed');
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this._callbacks.onInternalAction('commitPerformed');
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}
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} else {
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// run again in a few seconds, to check if there was a reconnection attempt
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setTimeout(handleUserChanges, 3000);
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setTimeout(() => this._handleUserChanges(), 3000);
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}
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if (sentMessage) {
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// run again in a few seconds, to detect a disconnect
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setTimeout(handleUserChanges, 3000);
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setTimeout(() => this._handleUserChanges(), 3000);
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}
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}
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};
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const acceptCommit = () => {
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editor.applyPreparedChangesetToBase();
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setStateIdle();
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_acceptCommit() {
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this._editor.applyPreparedChangesetToBase();
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this.setStateIdle();
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try {
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callbacks.onInternalAction('commitAcceptedByServer');
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callbacks.onConnectionTrouble('OK');
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this._callbacks.onInternalAction('commitAcceptedByServer');
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this._callbacks.onConnectionTrouble('OK');
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} catch (err) { /* intentionally ignored */ }
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handleUserChanges();
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};
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this._handleUserChanges();
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}
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const sendMessage = async (msg) => {
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await connectedGate;
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pad.socket.json.send(
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async sendMessage(msg) {
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await this._connectedGate;
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this._pad.socket.json.send(
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{
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type: 'COLLABROOM',
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component: 'pad',
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data: msg,
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});
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};
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}
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const serverMessageTaskQueue = new TaskQueue();
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const handleMessageFromServer = (evt) => {
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if (!pad.socket) return;
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handleMessageFromServer(evt) {
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if (!this._pad.socket) return;
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if (!evt.data) return;
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const wrapper = evt;
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if (wrapper.type !== 'COLLABROOM' && wrapper.type !== 'CUSTOM') return;
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const msg = wrapper.data;
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if (msg.type === 'NEW_CHANGES') {
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serverMessageTaskQueue.enqueue(async () => {
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this._serverMessageTaskQueue.enqueue(async () => {
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// Avoid updating the DOM while the user is composing a character. Notes about this `await`:
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// * `await null;` is equivalent to `await Promise.resolve(null);`, so if the user is not
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// currently composing a character then execution will continue without error.
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@ -204,51 +214,54 @@ const getCollabClient = (ace2editor, serverVars, initialUserInfo, pad) => {
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// the `await` but before the next line of code after the `await` (or, if it is
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// possible, that the chances are so small or the consequences so minor that it's not
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// worth addressing).
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await editor.getInInternationalComposition();
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await this._editor.getInInternationalComposition();
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const {newRev, changeset, author = '', apool} = msg;
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if (newRev !== (rev + 1)) {
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window.console.warn(`bad message revision on NEW_CHANGES: ${newRev} not ${rev + 1}`);
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const nextRev = this._rev + 1;
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if (newRev !== nextRev) {
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window.console.warn(`bad message revision on NEW_CHANGES: ${newRev} not ${nextRev}`);
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// setChannelState("DISCONNECTED", "badmessage_newchanges");
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return;
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}
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rev = newRev;
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editor.applyChangesToBase(changeset, author, apool);
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this._rev = newRev;
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this._editor.applyChangesToBase(changeset, author, apool);
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});
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} else if (msg.type === 'ACCEPT_COMMIT') {
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serverMessageTaskQueue.enqueue(() => {
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this._serverMessageTaskQueue.enqueue(() => {
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const newRev = msg.newRev;
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if (newRev !== (rev + 1)) {
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window.console.warn(`bad message revision on ACCEPT_COMMIT: ${newRev} not ${rev + 1}`);
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const nextRev = this._rev + 1;
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if (newRev !== nextRev) {
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window.console.warn(`bad message revision on ACCEPT_COMMIT: ${newRev} not ${nextRev}`);
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// setChannelState("DISCONNECTED", "badmessage_acceptcommit");
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return;
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}
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rev = newRev;
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acceptCommit();
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this._rev = newRev;
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this._acceptCommit();
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});
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} else if (msg.type === 'CLIENT_RECONNECT') {
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// Server sends a CLIENT_RECONNECT message when there is a client reconnect.
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// Server also returns all pending revisions along with this CLIENT_RECONNECT message
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serverMessageTaskQueue.enqueue(() => {
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this._serverMessageTaskQueue.enqueue(() => {
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if (msg.noChanges) {
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// If no revisions are pending, just make everything normal
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setIsPendingRevision(false);
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this.setIsPendingRevision(false);
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return;
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}
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const {headRev, newRev, changeset, author = '', apool} = msg;
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if (newRev !== (rev + 1)) {
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window.console.warn(`bad message revision on CLIENT_RECONNECT: ${newRev} not ${rev + 1}`);
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const nextRev = this._rev + 1;
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if (newRev !== nextRev) {
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window.console.warn(`bad message revision on CLIENT_RECONNECT: ${newRev} not ${nextRev}`);
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// setChannelState("DISCONNECTED", "badmessage_acceptcommit");
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return;
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}
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rev = newRev;
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if (author === pad.getUserId()) {
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acceptCommit();
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this._rev = newRev;
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if (author === this._pad.getUserId()) {
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this._acceptCommit();
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} else {
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editor.applyChangesToBase(changeset, author, apool);
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this._editor.applyChangesToBase(changeset, author, apool);
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}
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if (newRev === headRev) {
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// Once we have applied all pending revisions, make everything normal
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setIsPendingRevision(false);
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this.setIsPendingRevision(false);
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}
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});
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} else if (msg.type === 'USER_NEWINFO') {
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@ -257,29 +270,29 @@ const getCollabClient = (ace2editor, serverVars, initialUserInfo, pad) => {
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// Avoid a race condition when setting colors. If our color was set by a
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// query param, ignore our own "new user" message's color value.
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if (id === initialUserInfo.userId && initialUserInfo.globalUserColor) {
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msg.userInfo.colorId = initialUserInfo.globalUserColor;
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if (id === this._initialUserInfo.userId && this._initialUserInfo.globalUserColor) {
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msg.userInfo.colorId = this._initialUserInfo.globalUserColor;
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}
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if (userSet[id]) {
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userSet[id] = userInfo;
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callbacks.onUpdateUserInfo(userInfo);
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if (this._userSet[id]) {
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this._userSet[id] = userInfo;
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this._callbacks.onUpdateUserInfo(userInfo);
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} else {
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userSet[id] = userInfo;
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callbacks.onUserJoin(userInfo);
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this._userSet[id] = userInfo;
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this._callbacks.onUserJoin(userInfo);
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}
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tellAceActiveAuthorInfo(userInfo);
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this._tellAceActiveAuthorInfo(userInfo);
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} else if (msg.type === 'USER_LEAVE') {
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const userInfo = msg.userInfo;
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const id = userInfo.userId;
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if (userSet[id]) {
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delete userSet[userInfo.userId];
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fadeAceAuthorInfo(userInfo);
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callbacks.onUserLeave(userInfo);
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if (this._userSet[id]) {
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delete this._userSet[userInfo.userId];
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this._fadeAceAuthorInfo(userInfo);
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this._callbacks.onUserLeave(userInfo);
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}
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} else if (msg.type === 'CLIENT_MESSAGE') {
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callbacks.onClientMessage(msg.payload);
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this._callbacks.onClientMessage(msg.payload);
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} else if (msg.type === 'CHAT_MESSAGE') {
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chat.addMessage(msg, true, false);
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} else if (msg.type === 'CHAT_MESSAGES') {
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@ -315,179 +328,167 @@ const getCollabClient = (ace2editor, serverVars, initialUserInfo, pad) => {
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if (msg.type === 'NEW_CHANGES') msg.payload = msg;
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hooks.callAll(`handleClientMessage_${msg.type}`, {payload: msg.payload});
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};
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}
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const updateUserInfo = async (userInfo) => {
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await connectedGate;
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userInfo.userId = userId;
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userSet[userId] = userInfo;
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tellAceActiveAuthorInfo(userInfo);
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if (!pad.socket) return;
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await sendMessage(
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async updateUserInfo(userInfo) {
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await this._connectedGate;
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userInfo.userId = this._userId;
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this._userSet[this._userId] = userInfo;
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this._tellAceActiveAuthorInfo(userInfo);
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if (!this._pad.socket) return;
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await this.sendMessage(
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{
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type: 'USERINFO_UPDATE',
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userInfo,
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});
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};
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}
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const tellAceActiveAuthorInfo = (userInfo) => {
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tellAceAuthorInfo(userInfo.userId, userInfo.colorId);
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};
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_tellAceActiveAuthorInfo(userInfo) {
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this._tellAceAuthorInfo(userInfo.userId, userInfo.colorId);
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}
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const tellAceAuthorInfo = (userId, colorId, inactive) => {
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_tellAceAuthorInfo(userId, colorId, inactive) {
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if (typeof colorId === 'number') {
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colorId = clientVars.colorPalette[colorId];
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}
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const cssColor = colorId;
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if (inactive) {
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editor.setAuthorInfo(userId, {
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this._editor.setAuthorInfo(userId, {
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bgcolor: cssColor,
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fade: 0.5,
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});
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} else {
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editor.setAuthorInfo(userId, {
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this._editor.setAuthorInfo(userId, {
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bgcolor: cssColor,
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});
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}
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};
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}
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const fadeAceAuthorInfo = (userInfo) => {
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tellAceAuthorInfo(userInfo.userId, userInfo.colorId, true);
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};
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_fadeAceAuthorInfo(userInfo) {
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this._tellAceAuthorInfo(userInfo.userId, userInfo.colorId, true);
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}
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const getConnectedUsers = () => Object.values(userSet);
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getConnectedUsers() {
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return Object.values(this._userSet);
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}
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const addHistoricalAuthors = (hadata) => {
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addHistoricalAuthors(hadata) {
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for (const [author, data] of Object.entries(hadata)) {
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if (!userSet[author]) {
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tellAceAuthorInfo(author, data.colorId, true);
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if (!this._userSet[author]) {
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this._tellAceAuthorInfo(author, data.colorId, true);
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}
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}
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}
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};
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const setChannelState = (newChannelState, moreInfo) => {
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if (newChannelState === channelState) return;
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if (channelState === 'CONNECTED') {
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setChannelState(newChannelState, moreInfo) {
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if (newChannelState === this._channelState) return;
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if (this._channelState === 'CONNECTED') {
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// The old channel state is CONNECTED, which means we have just disconnected. Re-initialize
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// connectedGate so that actions are deferred until connected again. Do this before calling
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// onChannelStateChange() so that the event handler can create deferred actions if desired.
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connectedGate = new Gate();
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// this._connectedGate so that actions are deferred until connected again. Do this before
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// calling onChannelStateChange() so that the event handler can create deferred actions if
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// desired.
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this._connectedGate = new Gate();
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}
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channelState = newChannelState;
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callbacks.onChannelStateChange(channelState, moreInfo);
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switch (channelState) {
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this._channelState = newChannelState;
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this._callbacks.onChannelStateChange(this._channelState, moreInfo);
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switch (this._channelState) {
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case 'CONNECTING':
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case 'RECONNECTING':
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startConnectTime = Date.now();
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this._startConnectTime = Date.now();
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break;
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case 'CONNECTED':
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connectedGate.open();
|
||||
this._connectedGate.open();
|
||||
break;
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
const sendClientMessage = async (msg) => {
|
||||
await sendMessage(
|
||||
async sendClientMessage(msg) {
|
||||
await this.sendMessage(
|
||||
{
|
||||
type: 'CLIENT_MESSAGE',
|
||||
payload: msg,
|
||||
});
|
||||
};
|
||||
|
||||
const getCurrentRevisionNumber = () => rev;
|
||||
|
||||
const getMissedChanges = () => {
|
||||
const obj = {};
|
||||
obj.userInfo = userSet[userId];
|
||||
obj.baseRev = rev;
|
||||
if (committing && stateMessage) {
|
||||
obj.committedChangeset = stateMessage.changeset;
|
||||
obj.committedChangesetAPool = stateMessage.apool;
|
||||
editor.applyPreparedChangesetToBase();
|
||||
}
|
||||
const userChangesData = editor.prepareUserChangeset();
|
||||
|
||||
getCurrentRevisionNumber() {
|
||||
return this._rev;
|
||||
}
|
||||
|
||||
getMissedChanges() {
|
||||
const obj = {};
|
||||
obj.userInfo = this._userSet[this._userId];
|
||||
obj.baseRev = this._rev;
|
||||
if (this._committing && this._stateMessage) {
|
||||
obj.committedChangeset = this._stateMessage.changeset;
|
||||
obj.committedChangesetAPool = this._stateMessage.apool;
|
||||
this._editor.applyPreparedChangesetToBase();
|
||||
}
|
||||
const userChangesData = this._editor.prepareUserChangeset();
|
||||
if (userChangesData.changeset) {
|
||||
obj.furtherChangeset = userChangesData.changeset;
|
||||
obj.furtherChangesetAPool = userChangesData.apool;
|
||||
}
|
||||
return obj;
|
||||
};
|
||||
}
|
||||
|
||||
const setStateIdle = () => {
|
||||
committing = false;
|
||||
callbacks.onInternalAction('newlyIdle');
|
||||
schedulePerhapsCallIdleFuncs();
|
||||
};
|
||||
setStateIdle() {
|
||||
this._committing = false;
|
||||
this._callbacks.onInternalAction('newlyIdle');
|
||||
this._schedulePerhapsCallIdleFuncs();
|
||||
}
|
||||
|
||||
const setIsPendingRevision = (value) => {
|
||||
isPendingRevision = value;
|
||||
};
|
||||
setIsPendingRevision(value) {
|
||||
this._isPendingRevision = value;
|
||||
}
|
||||
|
||||
const idleFuncs = [];
|
||||
callWhenNotCommitting(func) {
|
||||
this._idleFuncs.push(func);
|
||||
this._schedulePerhapsCallIdleFuncs();
|
||||
}
|
||||
|
||||
const callWhenNotCommitting = (func) => {
|
||||
idleFuncs.push(func);
|
||||
schedulePerhapsCallIdleFuncs();
|
||||
};
|
||||
|
||||
const schedulePerhapsCallIdleFuncs = () => {
|
||||
_schedulePerhapsCallIdleFuncs() {
|
||||
setTimeout(() => {
|
||||
if (!committing) {
|
||||
while (idleFuncs.length > 0) {
|
||||
const f = idleFuncs.shift();
|
||||
if (!this._committing) {
|
||||
while (this._idleFuncs.length > 0) {
|
||||
const f = this._idleFuncs.shift();
|
||||
f();
|
||||
}
|
||||
}
|
||||
}, 0);
|
||||
};
|
||||
}
|
||||
|
||||
const self = {
|
||||
setOnUserJoin: (cb) => {
|
||||
callbacks.onUserJoin = cb;
|
||||
},
|
||||
setOnUserLeave: (cb) => {
|
||||
callbacks.onUserLeave = cb;
|
||||
},
|
||||
setOnUpdateUserInfo: (cb) => {
|
||||
callbacks.onUpdateUserInfo = cb;
|
||||
},
|
||||
setOnChannelStateChange: (cb) => {
|
||||
callbacks.onChannelStateChange = cb;
|
||||
},
|
||||
setOnClientMessage: (cb) => {
|
||||
callbacks.onClientMessage = cb;
|
||||
},
|
||||
setOnInternalAction: (cb) => {
|
||||
callbacks.onInternalAction = cb;
|
||||
},
|
||||
setOnConnectionTrouble: (cb) => {
|
||||
callbacks.onConnectionTrouble = cb;
|
||||
},
|
||||
updateUserInfo,
|
||||
handleMessageFromServer,
|
||||
getConnectedUsers,
|
||||
sendClientMessage,
|
||||
sendMessage,
|
||||
getCurrentRevisionNumber,
|
||||
getMissedChanges,
|
||||
callWhenNotCommitting,
|
||||
addHistoricalAuthors,
|
||||
setChannelState,
|
||||
setStateIdle,
|
||||
setIsPendingRevision,
|
||||
set commitDelay(ms) { commitDelay = ms; },
|
||||
get commitDelay() { return commitDelay; },
|
||||
};
|
||||
setOnUserJoin(cb) {
|
||||
this._callbacks.onUserJoin = cb;
|
||||
}
|
||||
|
||||
addHistoricalAuthors(serverVars.historicalAuthorData);
|
||||
tellAceActiveAuthorInfo(initialUserInfo);
|
||||
setOnUserLeave(cb) {
|
||||
this._callbacks.onUserLeave = cb;
|
||||
}
|
||||
|
||||
editor.setProperty('userAuthor', userId);
|
||||
editor.setBaseAttributedText(serverVars.initialAttributedText, serverVars.apool);
|
||||
editor.setUserChangeNotificationCallback(handleUserChanges);
|
||||
setOnUpdateUserInfo(cb) {
|
||||
this._callbacks.onUpdateUserInfo = cb;
|
||||
}
|
||||
|
||||
return self;
|
||||
};
|
||||
setOnChannelStateChange(cb) {
|
||||
this._callbacks.onChannelStateChange = cb;
|
||||
}
|
||||
|
||||
exports.getCollabClient = getCollabClient;
|
||||
setOnClientMessage(cb) {
|
||||
this._callbacks.onClientMessage = cb;
|
||||
}
|
||||
|
||||
setOnInternalAction(cb) {
|
||||
this._callbacks.onInternalAction = cb;
|
||||
}
|
||||
|
||||
setOnConnectionTrouble(cb) {
|
||||
this._callbacks.onConnectionTrouble = cb;
|
||||
}
|
||||
}
|
||||
|
||||
/** Call this when the document is ready, and a new Ace2Editor() has been created and inited.
|
||||
ACE's ready callback does not need to have fired yet.
|
||||
"serverVars" are from calling doc.getCollabClientVars() on the server. */
|
||||
exports.getCollabClient = (ace2editor, serverVars, initialUserInfo, pad) => (
|
||||
new CollabClient(ace2editor, serverVars, initialUserInfo, pad));
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue