Class MySingleApplication

src/bitmessageqt/__init__.py:4340–4388

Listener to allow our Qt form to get focus when another instance of the application is open. Based off this nice reimplmentation of MySingleApplication: http://stackoverflow.com/a/12712362/2679626

class MySingleApplication(QtGui.QApplication):
    """
    Listener to allow our Qt form to get focus when another instance of the
    application is open.

    Based off this nice reimplmentation of MySingleApplication:
    http://stackoverflow.com/a/12712362/2679626
    """

    # Unique identifier for this application
    uuid = '6ec0149b-96e1-4be1-93ab-1465fb3ebf7c'

    def __init__(self, *argv):
        super(MySingleApplication, self).__init__(*argv)
        id = MySingleApplication.uuid

        self.server = None
        self.is_running = False

        socket = QLocalSocket()
        socket.connectToServer(id)
        self.is_running = socket.waitForConnected()

        # Cleanup past crashed servers
        if not self.is_running:
            if socket.error() == QLocalSocket.ConnectionRefusedError:
                socket.disconnectFromServer()
                QLocalServer.removeServer(id)

        socket.abort()

        # Checks if there's an instance of the local server id running
        if self.is_running:
            # This should be ignored, singleinstance.py will take care of exiting me.
            pass
        else:
            # Nope, create a local server with this id and assign on_new_connection
            # for whenever a second instance tries to run focus the application.
            self.server = QLocalServer()
            self.server.listen(id)
            self.server.newConnection.connect(self.on_new_connection)

    def __del__(self):
        if self.server:
            self.server.close()

    def on_new_connection(self):
        if myapp:
            myapp.appIndicatorShow()


def init():