chat.qml Example File

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 ** This file is part of the examples of the QtBluetooth module.
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 import QtQuick 2.2
 import QtBluetooth 5.3

 Item {
     id: top

     Component.onCompleted: state = "begin"

     property string remoteDeviceName: ""
     property bool serviceFound: false

     BluetoothDiscoveryModel {
         id: btModel
         running: true
         discoveryMode: BluetoothDiscoveryModel.FullServiceDiscovery
         onRunningChanged : {
             if (!btModel.running && top.state == "begin" && !serviceFound) {
                 searchBox.animationRunning = false;
                 searchBox.appendText("\nNo service found. \n\nPlease start server\nand restart app.")
             }
         }

         onErrorChanged: {
             if (error != BluetoothDiscoveryModel.NoError && !btModel.running) {
                 searchBox.animationRunning = false
                 searchBox.appendText("\n\nDiscovery failed.\nPlease ensure Bluetooth is available.")
             }
         }

         onServiceDiscovered: {
             if (serviceFound)
                 return
             serviceFound = true
             console.log("Found new service " + service.deviceAddress + " " + service.deviceName + " " + service.serviceName);
             searchBox.appendText("\nConnecting to server...")
             remoteDeviceName = service.deviceName
             socket.setService(service)
         }
         uuidFilter: targetUuid //e8e10f95-1a70-4b27-9ccf-02010264e9c8
     }

     BluetoothSocket {
         id: socket
         connected: true

         onSocketStateChanged: {
             switch (socketState) {
                 case BluetoothSocket.Unconnected:
                 case BluetoothSocket.NoServiceSet:
                     searchBox.animationRunning = false;
                     searchBox.setText("\nNo connection. \n\nPlease restart app.");
                     top.state = "begin";
                     break;
                 case BluetoothSocket.Connected:
                     console.log("Connected to server ");
                     top.state = "chatActive"; // move to chat UI
                     break;
                 case BluetoothSocket.Connecting:
                 case BluetoothSocket.ServiceLookup:
                 case BluetoothSocket.Closing:
                 case BluetoothSocket.Listening:
                 case BluetoothSocket.Bound:
                     break;
             }
         }
         onStringDataChanged: {
             console.log("Received data: " )
             var data = remoteDeviceName + ": " + socket.stringData;
             data = data.substring(0, data.indexOf('\n'))
             chatContent.append({content: data})
             console.log(data);
         }
         //...
     }

     ListModel {
         id: chatContent
         ListElement {
             content: "Connected to chat server"
         }
     }

     Rectangle {
         id: background
         z: 0
         anchors.fill: parent
         color: "#5d5b59"
     }

     Search {
         id: searchBox
         anchors.centerIn: top
         opacity: 1
     }

     Rectangle {
         id: chatBox
         opacity: 0
         anchors.centerIn: top

         color: "#5d5b59"
         border.color: "black"
         border.width: 1
         radius: 5
         anchors.fill: parent

         function sendMessage()
         {
             // toogle focus to force end of input method composer
             var hasFocus = input.focus;
             input.focus = false;

             var data = input.text
             input.clear()
             chatContent.append({content: "Me: " + data})
             socket.stringData = data
             chatView.positionViewAtEnd()

             input.focus = hasFocus;
         }

         Item {
             anchors.fill: parent
             anchors.margins: 10

             InputBox {
                 id: input
                 Keys.onReturnPressed: chatBox.sendMessage()
                 height: sendButton.height
                 width: parent.width - sendButton.width - 15
                 anchors.left: parent.left
             }

             Button {
                 id: sendButton
                 anchors.right: parent.right
                 label: "Send"
                 onButtonClick: chatBox.sendMessage()
             }

             Rectangle {
                 height: parent.height - input.height - 15
                 width: parent.width;
                 color: "#d7d6d5"
                 anchors.bottom: parent.bottom
                 border.color: "black"
                 border.width: 1
                 radius: 5

                 ListView {
                     id: chatView
                     width: parent.width-5
                     height: parent.height-5
                     anchors.centerIn: parent
                     model: chatContent
                     clip: true
                     delegate: Component {
                         Text {
                             font.pointSize: 14
                             text: modelData
                         }
                     }
                 }
             }
         }
     }

     states: [
         State {
             name: "begin"
             PropertyChanges { target: searchBox; opacity: 1 }
             PropertyChanges { target: chatBox; opacity: 0 }
         },
         State {
             name: "chatActive"
             PropertyChanges { target: searchBox; opacity: 0 }
             PropertyChanges { target: chatBox; opacity: 1 }
         }
     ]
 }