yjs/build/browser/Connectors/PeerJsConnector.js

(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
var createPeerJsConnector;

createPeerJsConnector = function() {
  var PeerJsConnector, callback, peer;
  peer = null;
  if (arguments.length === 2) {
    peer = new Peer(arguments[0]);
    callback = arguments[1];
  } else {
    peer = new Peer(arguments[0], arguments[1]);
    peer.on('error', function(err) {
      throw new Error("Peerjs connector: " + err);
    });
    peer.on('disconnected', function() {
      throw new Error("Peerjs connector disconnected from signalling server. Cannot accept new connections. Not fatal, but not so good either..");
    });
    callback = arguments[2];
  }
  PeerJsConnector = (function() {
    function PeerJsConnector(engine, HB, execution_listener, yatta) {
      var send_, sync_every_collaborator;
      this.engine = engine;
      this.HB = HB;
      this.execution_listener = execution_listener;
      this.yatta = yatta;
      this.peer = peer;
      this.connections = {};
      this.new_connection_listeners = [];
      this.peer.on('connection', (function(_this) {
        return function(conn) {
          return _this.addConnection(conn);
        };
      })(this));
      sync_every_collaborator = (function(_this) {
        return function() {
          var conn, conn_id, _ref, _results;
          _ref = _this.connections;
          _results = [];
          for (conn_id in _ref) {
            conn = _ref[conn_id];
            _results.push(conn.send({
              sync_state_vector: _this.HB.getOperationCounter()
            }));
          }
          return _results;
        };
      })(this);
      setInterval(sync_every_collaborator, 4000);
      send_ = (function(_this) {
        return function(o) {
          var conn, conn_id, _ref, _results;
          if (o.uid.creator === _this.HB.getUserId() && (typeof o.uid.op_number !== "string")) {
            _ref = _this.connections;
            _results = [];
            for (conn_id in _ref) {
              conn = _ref[conn_id];
              _results.push(conn.send({
                op: o
              }));
            }
            return _results;
          }
        };
      })(this);
      this.execution_listener.push(send_);
    }

    PeerJsConnector.prototype.connectToPeer = function(id) {
      if ((this.connections[id] == null) && id !== this.yatta.getUserId()) {
        return this.addConnection(peer.connect(id));
      }
    };

    PeerJsConnector.prototype.getAllConnectionIds = function() {
      var conn_id, _results;
      _results = [];
      for (conn_id in this.connections) {
        _results.push(conn_id);
      }
      return _results;
    };

    PeerJsConnector.prototype.onNewConnection = function(f) {
      return this.new_connection_listeners.push(f);
    };

    PeerJsConnector.prototype.addConnection = function(conn) {
      var initialized_him, initialized_me, sendStateVector;
      this.connections[conn.peer] = conn;
      initialized_me = false;
      initialized_him = false;
      conn.on('data', (function(_this) {
        return function(data) {
          var conn_id, _i, _len, _ref, _results;
          if (data === "empty_message") {

          } else if (data.HB != null) {
            initialized_me = true;
            _this.engine.applyOpsCheckDouble(data.HB);
            if (!data.initialized) {
              conn.send({
                conns: _this.getAllConnectionIds()
              });
              return _this.new_connection_listeners.map(function(f) {
                return f(conn);
              });
            }
          } else if (data.op != null) {
            return _this.engine.applyOp(data.op);
          } else if (data.conns != null) {
            _ref = data.conns;
            _results = [];
            for (_i = 0, _len = _ref.length; _i < _len; _i++) {
              conn_id = _ref[_i];
              _results.push(_this.connectToPeer(conn_id));
            }
            return _results;
          } else if (data.sync_state_vector != null) {
            return conn.send({
              HB: _this.yatta.getHistoryBuffer()._encode(data.sync_state_vector),
              initialized: true
            });
          } else if (data.state_vector != null) {
            if (!initialized_him) {
              conn.send({
                HB: _this.yatta.getHistoryBuffer()._encode(data.state_vector),
                initialized: false
              });
              return initialized_him = true;
            }
          } else {
            throw new Error("Can't parse this operation: " + data);
          }
        };
      })(this));
      sendStateVector = (function(_this) {
        return function() {
          conn.send({
            state_vector: _this.HB.getOperationCounter()
          });
          if (!initialized_me) {
            return setTimeout(sendStateVector, 100);
          }
        };
      })(this);
      return sendStateVector();
    };

    return PeerJsConnector;

  })();
  return peer.on('open', function(id) {
    return callback(PeerJsConnector, id);
  });
};

module.exports = createPeerJsConnector;

if (typeof window !== "undefined" && window !== null) {
  if (window.Y == null) {
    window.Y = {};
  }
  window.Y.createPeerJsConnector = createPeerJsConnector;
}


},{}]},{},[1])
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e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error(\"Cannot find module '\"+o+\"'\")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})","\n#\n# @overload createPeerJsConnector peerjs_options, callback\n#   @param {Object} peerjs_options Is the options object that is passed to PeerJs.\n#   @param {Function} callback The callback is called when the connector is initialized.\n# @overload createPeerJsConnector peerjs_user_id, peerjs_options, callback\n#   @param {String} peerjs_user_id The user_id that is passed to PeerJs as the user_id and should be unique between all (also the unconnected) Peers.\n#   @param {Object} peerjs_options Is the options object that is passed to PeerJs.\n#   @param {Function} callback The callback is called when the connector is initialized.\n#\ncreatePeerJsConnector = ()->\n  peer = null\n  if arguments.length is 2\n    peer = new Peer arguments[0]\n    callback = arguments[1]\n  else\n    peer = new Peer arguments[0], arguments[1]\n    peer.on 'error', (err)->\n      throw new Error \"Peerjs connector: #{err}\"\n    peer.on 'disconnected', ()->\n      throw new Error \"Peerjs connector disconnected from signalling server. Cannot accept new connections. Not fatal, but not so good either..\"\n    callback = arguments[2]\n\n\n  #\n  # PeerJs is a Framework that enables you to connect to other peers. You just need the\n  # user-id of the peer (browser/client). And then you can connect to it.\n  # @see http://peerjs.com\n  #\n  class PeerJsConnector\n\n    #\n    # @param {Engine} engine The transformation engine\n    # @param {HistoryBuffer} HB\n    # @param {Array<Function>} execution_listener You must ensure that whenever an operation is executed, every function in this Array is called.\n    # @param {Yatta} yatta The Yatta framework.\n    #\n    constructor: (@engine, @HB, @execution_listener, @yatta)->\n\n      @peer = peer\n      @connections = {}\n      @new_connection_listeners = []\n\n      @peer.on 'connection', (conn)=>\n        @addConnection conn\n\n      sync_every_collaborator = ()=>\n        for conn_id, conn of @connections\n          conn.send\n            sync_state_vector: @HB.getOperationCounter()\n      setInterval sync_every_collaborator, 4000\n\n      send_ = (o)=>\n        if o.uid.creator is @HB.getUserId() and (typeof o.uid.op_number isnt \"string\")\n          for conn_id,conn of @connections\n            conn.send\n              op: o\n      @execution_listener.push send_\n\n\n\n\n    #\n    # Connect the Framework to another peer. Therefore you have to receive his\n    # user_id. If the other peer is connected to other peers, the PeerJsConnector\n    # will automatically connect to them too.\n    #\n    # Transmitting the user_id is your job.\n    # See [TextEditing](../../examples/TextEditing/) for a nice example\n    # on how to do that with urls.\n    #\n    # @param id {String} Connection id\n    #\n    connectToPeer: (id)->\n      if not @connections[id]? and id isnt @yatta.getUserId()\n        @addConnection peer.connect id\n\n    #\n    # Receive the id of every connected peer.\n    # @return {Array<String>} A list of Peer-Ids\n    #\n    getAllConnectionIds: ()->\n      for conn_id of @connections\n        conn_id\n\n    onNewConnection: (f)->\n      @new_connection_listeners.push f\n\n    #\n    # Adds an existing connection to this connector.\n    # @param conn {PeerJsConnection}\n    #\n    addConnection: (conn)->\n      #\n      # What this method does:\n      # * Send state vector\n      # * Receive HB -> apply them\n      # * Send connections\n      # * Receive Connections -> Connect to unknow connections\n      @connections[conn.peer] = conn\n      initialized_me = false\n      initialized_him = false\n      conn.on 'data', (data)=>\n        if data is \"empty_message\"\n          # nop\n        else if data.HB?\n          initialized_me = true\n          @engine.applyOpsCheckDouble data.HB\n          if not data.initialized\n            conn.send\n              conns: @getAllConnectionIds()\n            @new_connection_listeners.map (f)->\n              f(conn)\n        else if data.op?\n          @engine.applyOp data.op\n        else if data.conns?\n          for conn_id in data.conns\n            @connectToPeer conn_id\n        else if data.sync_state_vector?\n          conn.send\n            HB: @yatta.getHistoryBuffer()._encode(data.sync_state_vector)\n            initialized: true\n        else if data.state_vector?\n          if not initialized_him\n            # make sure, that it is sent only once\n            conn.send\n              HB: @yatta.getHistoryBuffer()._encode(data.state_vector)\n              initialized: false\n            initialized_him = true\n        else\n          throw new Error \"Can't parse this operation: #{data}\"\n\n      sendStateVector = ()=>\n        conn.send\n          state_vector: @HB.getOperationCounter()\n        if not initialized_me\n          # Because of a bug in PeerJs,\n          # we never know if state vector was actually sent\n          setTimeout sendStateVector, 100\n      sendStateVector()\n\n  peer.on 'open', (id)->\n    callback PeerJsConnector, id\n\n\nmodule.exports = createPeerJsConnector\nif window?\n  if not window.Y?\n    window.Y = {}\n  window.Y.createPeerJsConnector = createPeerJsConnector\n\n"]}