Add TCP Socket Support

js/qz-tray.js

@@ -57,7 +57,7 @@ var qz = (function() {
 
         //stream types
         streams: {
-            serial: 'SERIAL', usb: 'USB', hid: 'HID', printer: 'PRINTER', file: 'FILE'
+            serial: 'SERIAL', usb: 'USB', hid: 'HID', printer: 'PRINTER', file: 'FILE', socket: 'SOCKET'
         },
 
 
@@ -296,6 +296,9 @@ var qz = (function() {
 
                                         _qz.serial.callSerial(JSON.parse(returned.event));
                                         break;
+                                    case _qz.streams.socket:
+                                        _qz.socket.callSocket(JSON.parse(returned.event));
+                                        break;
                                     case _qz.streams.usb:
                                         if (!returned.event) {
                                             returned.event = JSON.stringify({ vendorId: returned.key[0], productId: returned.key[1], output: returned.data });
@@ -472,6 +475,22 @@ var qz = (function() {
         },
 
 
+        socket: {
+            /** List of functions called when receiving data from network socket connection. */
+            socketCallbacks: [],
+            /** Calls all functions registered to listen for network socket events. */
+            callSocket: function(socketEvent) {
+                if (Array.isArray(_qz.socket.socketCallbacks)) {
+                    for(var i = 0; i < _qz.socket.socketCallbacks.length; i++) {
+                        _qz.socket.socketCallbacks[i](socketEvent);
+                    }
+                } else {
+                    _qz.socket.socketCallbacks(socketEvent);
+                }
+            }
+        },
+
+
         usb: {
             /** List of functions called when receiving data from usb connection. */
             usbCallbacks: [],
@@ -1606,6 +1625,85 @@ var qz = (function() {
             }
         },
 
+        /**
+         * Calls related to interaction with communication sockets.
+         * @namespace qz.socket
+         */
+        socket: {
+            /**
+             * Opens a network port for sending and receiving data.
+             *
+             * @param {string} host The connection hostname.
+             * @param {number} port The connection port number.
+             * @param {Object} [options] Network socket configuration.
+             *  @param {string} [options.encoding='UTF-8'] Character set for communications.
+             *
+             * @memberof qz.socket
+             */
+            open: function(host, port, options) {
+                var params = {
+                    host: host,
+                    port: port,
+                    options: options
+                };
+                return _qz.websocket.dataPromise("socket.open", params);
+            },
+
+            /**
+             * @param {string} host The connection hostname.
+             * @param {number} port The connection port number.
+             *
+             * @memberof qz.socket
+             */
+            close: function(host, port) {
+                var params = {
+                    host: host,
+                    port: port
+                };
+                return _qz.websocket.dataPromise("socket.close", params);
+            },
+
+            /**
+             * Send data over an open socket.
+             *
+             * @param {string} host The connection hostname.
+             * @param {number} port The connection port number.
+             * @param {string|Object} data Data to be sent over the port.
+             *  @param {string} [data.type='PLAIN'] Valid values <code>[PLAIN]</code>
+             *  @param {string} data.data Data to be sent over the port.
+             *
+             * @memberof qz.socket
+             */
+            sendData: function(host, port, data) {
+                if (typeof data !== 'object') {
+                    data = {
+                        data: data,
+                        type: "PLAIN"
+                    };
+                }
+
+                var params = {
+                    host: host,
+                    port: port,
+                    data: data
+                };
+                return _qz.websocket.dataPromise("socket.sendData", params);
+            },
+
+            /**
+             * List of functions called for any response from open network sockets.
+             * Event data will contain <code>{string} host</code> and <code>{number} port</code> for all types.
+             *  For RECEIVE types, <code>{string} response</code>.
+             *  For ERROR types, <code>{string} exception</code>.
+             *
+             * @param {Function|Array<Function>} calls Single or array of <code>Function({Object} eventData)</code> calls.
+             *
+             * @memberof qz.socket
+             */
+            setSocketCallbacks: function(calls) {
+                _qz.socket.socketCallbacks = calls;
+            }
+        },
 
         /**
          * Calls related to interaction with USB devices.