eric4.Utilities.SingleApplication

Module implementing the single application server and client.

Global Attributes

SAAddress
SALckPID
SALckSocket

Classes

SingleApplicationClient Class implementing the single application client base class.
SingleApplicationServer Class implementing the single application server base class.

Functions

None


SingleApplicationClient

Class implementing the single application client base class.

Derived from

object

Class Attributes

None

Methods

SingleApplicationClient Constructor
connect Public method to connect the single application client to its server.
disconnect Public method to disconnect from the Single Appliocation server.
errstr Public method to return a meaningful error string for the last error.
processArgs Public method to process the command line args passed to the UI.
sendCommand Public method to send the command to the application server.

SingleApplicationClient (Constructor)

SingleApplicationClient(pidFile)

Constructor

pidFile
filename of the PID file used to get some interface informations

SingleApplicationClient.connect

connect()

Public method to connect the single application client to its server.

Returns:
value indicating success or an error number. Value is one of:
0No application is running
1Application is already running
-1The lock file could not be read
-2The lock file is corrupt

SingleApplicationClient.disconnect

disconnect()

Public method to disconnect from the Single Appliocation server.

SingleApplicationClient.errstr

errstr()

Public method to return a meaningful error string for the last error.

Returns:
error string for the last error (string)

SingleApplicationClient.processArgs

processArgs(args)

Public method to process the command line args passed to the UI.

Note: This method must be overridden by subclasses.

args
command line args (list of strings)

SingleApplicationClient.sendCommand

sendCommand(cmd)

Public method to send the command to the application server.

cmd
command to be sent (string)
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SingleApplicationServer

Class implementing the single application server base class.

Derived from

QTcpServer

Class Attributes

None

Methods

SingleApplicationServer Constructor
__disconnected Private method to handle the closure of the socket.
__newConnection Private slot to handle a new connection.
__parseLine Private method to handle data from the client.
handleCommand Public slot to handle the command sent by the client.
shutdown Public method used to shut down the server.

SingleApplicationServer (Constructor)

SingleApplicationServer(pidFile)

Constructor

pidFile
filename of the PID file used to record some interface informations

SingleApplicationServer.__disconnected

__disconnected()

Private method to handle the closure of the socket.

SingleApplicationServer.__newConnection

__newConnection()

Private slot to handle a new connection.

SingleApplicationServer.__parseLine

__parseLine()

Private method to handle data from the client.

SingleApplicationServer.handleCommand

handleCommand(cmd, params)

Public slot to handle the command sent by the client.

Note: This method must be overridden by subclasses.

cmd
commandstring (string)
params
parameterstring (string)

SingleApplicationServer.shutdown

shutdown()

Public method used to shut down the server.

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