eric6/Debugger/DebugServer.py

branch
maintenance
changeset 6989
8b8cadf8d7e9
parent 6923
d062df8f1d9f
parent 6942
2602857055c5
child 7286
7eb04391adf7
diff -r 7926553b7509 -r 8b8cadf8d7e9 eric6/Debugger/DebugServer.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/eric6/Debugger/DebugServer.py	Sat May 04 11:10:44 2019 +0200
@@ -0,0 +1,1873 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2007 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing the debug server.
+"""
+
+from __future__ import unicode_literals
+try:
+    str = unicode
+except NameError:
+    pass
+
+import os
+import sys
+
+from PyQt5.QtCore import pyqtSignal, QModelIndex
+from PyQt5.QtNetwork import QTcpServer, QHostAddress, QHostInfo, \
+    QNetworkInterface
+
+from E5Gui.E5Application import e5App
+from E5Gui import E5MessageBox
+
+from .BreakPointModel import BreakPointModel
+from .WatchPointModel import WatchPointModel
+from . import DebugClientCapabilities
+
+import Preferences
+import Utilities
+
+
+DebuggerInterfaces = {
+    "Python": "DebuggerInterfacePython",
+    "None": "DebuggerInterfaceNone",
+}
+
+
+class DebugServer(QTcpServer):
+    """
+    Class implementing the debug server embedded within the IDE.
+    
+    @signal clientProcessStdout(str) emitted after the client has sent some
+        output via stdout
+    @signal clientProcessStderr(str) emitted after the client has sent some
+        output via stderr
+    @signal clientOutput(str) emitted after the client has sent some output
+    @signal clientRawInputSent() emitted after the data was sent to the
+        debug client
+    @signal clientLine(filename, lineno, forStack) emitted after the
+        debug client has executed a line of code
+    @signal clientStack(stack) emitted after the debug client has executed a
+        line of code
+    @signal clientThreadList(currentId, threadList) emitted after a thread list
+        has been received
+    @signal clientThreadSet() emitted after the client has acknowledged the
+        change of the current thread
+    @signal clientVariables(scope, variables) emitted after a variables dump
+        has been received
+    @signal clientVariable(scope, variables) emitted after a dump for one class
+        variable has been received
+    @signal clientStatement(bool) emitted after an interactive command has
+        been executed. The parameter is 0 to indicate that the command is
+        complete and 1 if it needs more input.
+    @signal clientException(exception) emitted after an exception occured on
+        the client side
+    @signal clientSyntaxError(exception) emitted after a syntax error has been
+        detected on the client side
+    @signal clientSignal(signal) emitted after a signal has been generated on
+        the client side
+    @signal clientExit(int, str, bool) emitted after the client has exited
+        giving the exit status, an exit message and an indication to be quiet
+    @signal clientClearBreak(filename, lineno) emitted after the debug client
+        has decided to clear a temporary breakpoint
+    @signal clientBreakConditionError(fn, lineno) emitted after the client has
+        signaled a syntax error in a breakpoint condition
+    @signal clientClearWatch(condition) emitted after the debug client
+            has decided to clear a temporary watch expression
+    @signal clientWatchConditionError(condition) emitted after the client has
+        signaled a syntax error in a watch expression
+    @signal clientRawInput(prompt, echo) emitted after a raw input request was
+        received
+    @signal clientBanner(version, platform, dbgclient, venvname) emitted after
+        the client banner data was received
+    @signal clientCapabilities(capabilities, cltype, venvname) emitted after
+        the clients capabilities were received
+    @signal clientCompletionList(completionList, text) emitted after the client
+        the commandline completion list and the reworked searchstring was
+        received from the client
+    @signal passiveDebugStarted(str, bool) emitted after the debug client has
+        connected in passive debug mode
+    @signal clientGone(bool) emitted if the client went away (planned or
+        unplanned)
+    @signal clientInterpreterChanged(str) emitted to signal a change of the
+        client interpreter
+    @signal utDiscovered(testCases, exc_type, exc_value) emitted after the
+        client has performed a test case discovery action
+    @signal utPrepared(nrTests, exc_type, exc_value) emitted after the client
+        has loaded a unittest suite
+    @signal utFinished() emitted after the client signalled the end of the
+        unittest
+    @signal utStartTest(testname, testdocu) emitted after the client has
+        started a test
+    @signal utStopTest() emitted after the client has finished a test
+    @signal utTestFailed(testname, exc_info, id) emitted after the client
+        reported a failed test
+    @signal utTestErrored(testname, exc_info, id) emitted after the client
+        reported an errored test
+    @signal utTestSkipped(testname, reason, id) emitted after the client
+        reported a skipped test
+    @signal utTestFailedExpected(testname, exc_info, id) emitted after the
+        client reported an expected test failure
+    @signal utTestSucceededUnexpected(testname, id) emitted after the client
+        reported an unexpected test success
+    @signal callTraceInfo emitted after the client reported the call trace
+        data (isCall, fromFile, fromLine, fromFunction, toFile, toLine,
+        toFunction)
+    @signal appendStdout(msg) emitted when a passive debug connection is
+        established or lost
+    """
+    clientClearBreak = pyqtSignal(str, int)
+    clientClearWatch = pyqtSignal(str)
+    clientGone = pyqtSignal(bool)
+    clientProcessStdout = pyqtSignal(str)
+    clientProcessStderr = pyqtSignal(str)
+    clientRawInputSent = pyqtSignal()
+    clientOutput = pyqtSignal(str)
+    clientLine = pyqtSignal(str, int, bool)
+    clientStack = pyqtSignal(list)
+    clientThreadList = pyqtSignal('PyQt_PyObject', list)
+    clientThreadSet = pyqtSignal()
+    clientVariables = pyqtSignal(int, list)
+    clientVariable = pyqtSignal(int, list)
+    clientStatement = pyqtSignal(bool)
+    clientException = pyqtSignal(str, str, list)
+    clientSyntaxError = pyqtSignal(str, str, int, int)
+    clientSignal = pyqtSignal(str, str, int, str, str)
+    clientExit = pyqtSignal(int, str, bool)
+    clientBreakConditionError = pyqtSignal(str, int)
+    clientWatchConditionError = pyqtSignal(str)
+    clientRawInput = pyqtSignal(str, bool)
+    clientBanner = pyqtSignal(str, str, str, str)
+    clientCapabilities = pyqtSignal(int, str, str)
+    clientCompletionList = pyqtSignal(list, str)
+    clientInterpreterChanged = pyqtSignal(str)
+    utDiscovered = pyqtSignal(list, str, str)
+    utPrepared = pyqtSignal(int, str, str)
+    utStartTest = pyqtSignal(str, str)
+    utStopTest = pyqtSignal()
+    utTestFailed = pyqtSignal(str, str, str)
+    utTestErrored = pyqtSignal(str, str, str)
+    utTestSkipped = pyqtSignal(str, str, str)
+    utTestFailedExpected = pyqtSignal(str, str, str)
+    utTestSucceededUnexpected = pyqtSignal(str, str)
+    utFinished = pyqtSignal()
+    passiveDebugStarted = pyqtSignal(str, bool)
+    callTraceInfo = pyqtSignal(bool, str, str, str, str, str, str)
+    appendStdout = pyqtSignal(str)
+    
+    def __init__(self, originalPathString, preventPassiveDebugging=False):
+        """
+        Constructor
+        
+        @param originalPathString original PATH environment variable
+        @type str
+        @param preventPassiveDebugging flag overriding the PassiveDbgEnabled
+            setting
+        @type bool
+        """
+        super(DebugServer, self).__init__()
+        
+        self.__originalPathString = originalPathString
+        
+        self.__debuggerInterfaces = {}
+        # the interface name is the key, a function to get the
+        # registration data is the value
+        self.__debuggerInterfaceRegistry = {}
+        # the client language is the key, a list containing the client
+        # capabilities, a list of associated file extensions, a
+        # function reference to create the debugger interface (see
+        # __createDebuggerInterface() below) and the interface name is
+        # the value
+        
+        # create our models
+        self.breakpointModel = BreakPointModel(self)
+        self.watchpointModel = WatchPointModel(self)
+        self.watchSpecialCreated = \
+            self.tr("created", "must be same as in EditWatchpointDialog")
+        self.watchSpecialChanged = \
+            self.tr("changed", "must be same as in EditWatchpointDialog")
+        
+        self.networkInterface = Preferences.getDebugger("NetworkInterface")
+        if self.networkInterface == "all":
+            hostAddress = QHostAddress("0.0.0.0")  # QHostAddress.Any)
+        elif self.networkInterface == "allv6":
+            hostAddress = QHostAddress("::")  # QHostAddress.AnyIPv6)
+        else:
+            hostAddress = QHostAddress(self.networkInterface)
+        self.networkInterfaceName, self.networkInterfaceIndex = \
+            self.__getNetworkInterfaceAndIndex(self.networkInterface)
+        
+        if not preventPassiveDebugging and \
+           Preferences.getDebugger("PassiveDbgEnabled"):
+            sock = Preferences.getDebugger("PassiveDbgPort")  # default: 42424
+            self.listen(hostAddress, sock)
+            self.passive = True
+            self.passiveClientExited = False
+        else:
+            if hostAddress.toString().lower().startswith("fe80"):
+                hostAddress.setScopeId(self.networkInterfaceName)
+            self.listen(hostAddress)
+            self.passive = False
+        
+        self.debuggerInterface = None
+        self.debugging = False
+        self.running = False
+        self.clientProcess = None
+        self.clientInterpreter = ""
+        self.clientType = \
+            Preferences.Prefs.settings.value('DebugClient/Type')
+        if self.clientType is None:
+            if sys.version_info[0] == 2:
+                self.clientType = 'Python2'
+            else:
+                self.clientType = 'Python3'
+        # Change clientType if dependent interpreter does not exist anymore
+        # (maybe deinstalled,...)
+        elif self.clientType == 'Python2' and Preferences.getDebugger(
+                "Python2VirtualEnv") == '' and sys.version_info[0] == 3:
+            self.clientType = 'Python3'
+        elif self.clientType == 'Python3' and Preferences.getDebugger(
+                "Python3VirtualEnv") == '' and sys.version_info[0] == 2:
+            self.clientType = 'Python2'
+        
+        self.lastClientType = ''
+        self.__autoClearShell = False
+        self.__forProject = False
+        
+        self.clientClearBreak.connect(self.__clientClearBreakPoint)
+        self.clientClearWatch.connect(self.__clientClearWatchPoint)
+        self.newConnection.connect(self.__newConnection)
+        
+        self.breakpointModel.rowsAboutToBeRemoved.connect(
+            self.__deleteBreakPoints)
+        self.breakpointModel.dataAboutToBeChanged.connect(
+            self.__breakPointDataAboutToBeChanged)
+        self.breakpointModel.dataChanged.connect(self.__changeBreakPoints)
+        self.breakpointModel.rowsInserted.connect(self.__addBreakPoints)
+        
+        self.watchpointModel.rowsAboutToBeRemoved.connect(
+            self.__deleteWatchPoints)
+        self.watchpointModel.dataAboutToBeChanged.connect(
+            self.__watchPointDataAboutToBeChanged)
+        self.watchpointModel.dataChanged.connect(self.__changeWatchPoints)
+        self.watchpointModel.rowsInserted.connect(self.__addWatchPoints)
+        
+        self.__maxVariableSize = Preferences.getDebugger("MaxVariableSize")
+        
+        self.__registerDebuggerInterfaces()
+        
+    def getHostAddress(self, localhost):
+        """
+        Public method to get the IP address or hostname the debug server is
+        listening.
+        
+        @param localhost flag indicating to return the address for localhost
+            (boolean)
+        @return IP address or hostname (string)
+        """
+        if self.networkInterface == "all":
+            if localhost:
+                return "127.0.0.1"
+            else:
+                return "{0}@@v4".format(QHostInfo.localHostName())
+        elif self.networkInterface == "allv6":
+            if localhost:
+                return "::1"
+            else:
+                return "{0}@@v6".format(QHostInfo.localHostName())
+        else:
+            return "{0}@@i{1}".format(self.networkInterface,
+                                      self.networkInterfaceIndex)
+        
+    def __getNetworkInterfaceAndIndex(self, address):
+        """
+        Private method to determine the network interface and the interface
+        index.
+        
+        @param address address to determine the info for (string)
+        @return tuple of network interface name (string) and index (integer)
+        """
+        if address not in ["all", "allv6"]:
+            for networkInterface in QNetworkInterface.allInterfaces():
+                addressEntries = networkInterface.addressEntries()
+                if len(addressEntries) > 0:
+                    for addressEntry in addressEntries:
+                        if addressEntry.ip().toString().lower() == \
+                                address.lower():
+                            return networkInterface.humanReadableName(), \
+                                networkInterface.index()
+        
+        return "", 0
+        
+    def preferencesChanged(self):
+        """
+        Public slot to handle the preferencesChanged signal.
+        """
+        registeredInterfaces = {}
+        for interfaceName in self.__debuggerInterfaces:
+            registeredInterfaces[interfaceName] = \
+                self.__debuggerInterfaces[interfaceName]
+        
+        self.__debuggerInterfaceRegistry = {}
+        for interfaceName, getRegistryData in registeredInterfaces.items():
+            self.registerDebuggerInterface(interfaceName, getRegistryData,
+                                           reregister=True)
+        
+        self.__maxVariableSize = Preferences.getDebugger("MaxVariableSize")
+        
+    def registerDebuggerInterface(self, interfaceName, getRegistryData,
+                                  reregister=False):
+        """
+        Public method to register a debugger interface.
+        
+        @param interfaceName name of the debugger interface
+        @type str
+        @param getRegistryData reference to a function to be called
+            to get the debugger interface details. This method shall
+            return the client language, the client capabilities, the
+            list of associated file extensions and a function reference
+            to create the debugger interface (see __createDebuggerInterface())
+        @type function
+        @param reregister flag indicating to re-register the interface
+        @type bool
+        """
+        if interfaceName in self.__debuggerInterfaces and not reregister:
+            E5MessageBox.warning(
+                None,
+                self.tr("Register Debugger Interface"),
+                self.tr("""<p>The debugger interface <b>{0}</b> has already"""
+                        """ been registered. Ignoring this request.</p>"""))
+            return
+        
+        if not reregister:
+            self.__debuggerInterfaces[interfaceName] = getRegistryData
+        registryDataList = getRegistryData()
+        if registryDataList:
+            for clientLanguage, clientCapabilities, clientExtensions, \
+                    interfaceCreator in registryDataList:
+                self.__debuggerInterfaceRegistry[clientLanguage] = [
+                    clientCapabilities, clientExtensions, interfaceCreator,
+                    interfaceName]
+        
+    def unregisterDebuggerInterface(self, interfaceName):
+        """
+        Public method to unregister a debugger interface.
+        
+        @param interfaceName interfaceName of the debugger interface
+        @type str
+        """
+        if interfaceName in self.__debuggerInterfaces:
+            clientLanguages = []
+            for clientLanguage, registryData in \
+                    self.__debuggerInterfaceRegistry.items():
+                if interfaceName == registryData[-1]:
+                    clientLanguages.append(clientLanguage)
+            for clientLanguage in clientLanguages:
+                del self.__debuggerInterfaceRegistry[clientLanguage]
+            del self.__debuggerInterfaces[interfaceName]
+        
+    def __findLanguageForExtension(self, ext):
+        """
+        Private method to get the language associated with a file extension.
+        
+        @param ext file extension
+        @type str
+        @return associated language
+        @rtype str
+        """
+        for language in self.__debuggerInterfaceRegistry:
+            if ext in self.__debuggerInterfaceRegistry[language][1]:
+                return language
+        
+        return ""
+        
+    def __registerDebuggerInterfaces(self):
+        """
+        Private method to register the available internal debugger interfaces.
+        """
+        for name, interface in DebuggerInterfaces.items():
+            modName = "Debugger.{0}".format(interface)
+            mod = __import__(modName)
+            components = modName.split('.')
+            for comp in components[1:]:
+                mod = getattr(mod, comp)
+            
+            self.registerDebuggerInterface(name, mod.getRegistryData)
+        
+    def getSupportedLanguages(self, shellOnly=False):
+        """
+        Public slot to return the supported programming languages.
+        
+        @param shellOnly flag indicating only languages supporting an
+            interactive shell should be returned
+        @return list of supported languages (list of strings)
+        """
+        languages = list(self.__debuggerInterfaceRegistry.keys())
+        try:
+            languages.remove("None")
+        except ValueError:
+            pass    # it is not in the list
+        
+        if shellOnly:
+            languages = \
+                [lang for lang in languages
+                 if self.__debuggerInterfaceRegistry[lang][0] &
+                    DebugClientCapabilities.HasShell]
+        
+        return languages[:]
+        
+    def getExtensions(self, language):
+        """
+        Public slot to get the extensions associated with the given language.
+        
+        @param language language to get extensions for (string)
+        @return tuple of extensions associated with the language
+            (tuple of strings)
+        """
+        if language in self.__debuggerInterfaceRegistry:
+            return tuple(self.__debuggerInterfaceRegistry[language][1])
+        else:
+            return tuple()
+        
+    def __createDebuggerInterface(self, clientType=None):
+        """
+        Private slot to create the debugger interface object.
+        
+        @param clientType type of the client interface to be created (string)
+        """
+        if self.lastClientType != self.clientType or clientType is not None:
+            if clientType is None:
+                clientType = self.clientType
+            if clientType in self.__debuggerInterfaceRegistry:
+                self.debuggerInterface = \
+                    self.__debuggerInterfaceRegistry[clientType][2](
+                        self, self.passive)
+            else:
+                self.debuggerInterface = \
+                    self.__debuggerInterfaceRegistry["None"][2](
+                        self, self.passive)
+                self.clientType = "None"
+        
+    def __setClientType(self, clType):
+        """
+        Private method to set the client type.
+        
+        @param clType type of client to be started (string)
+        """
+        if clType is not None and clType in self.getSupportedLanguages():
+            self.clientType = clType
+            Preferences.Prefs.settings.setValue(
+                'DebugClient/Type', self.clientType)
+        
+    def startClient(self, unplanned=True, clType=None, forProject=False,
+                    runInConsole=False, venvName="", workingDir=None):
+        """
+        Public method to start a debug client.
+        
+        @keyparam unplanned flag indicating that the client has died
+        @type bool
+        @keyparam clType type of client to be started
+        @type str
+        @keyparam forProject flag indicating a project related action
+        @type bool
+        @keyparam runInConsole flag indicating to start the debugger in a
+            console window
+        @type bool
+        @keyparam venvName name of the virtual environment to be used
+        @type str
+        @keyparam workingDir directory to start the debugger client in
+        @type str
+        """
+        self.running = False
+        
+        if not self.passive or not self.passiveClientExited:
+            if self.debuggerInterface and self.debuggerInterface.isConnected():
+                self.shutdownServer()
+                self.debugging = False
+                self.clientGone.emit(unplanned and self.debugging)
+        
+        if clType:
+            if clType not in self.getSupportedLanguages():
+                # a not supported client language was requested
+                return
+            
+            self.__setClientType(clType)
+        
+        # only start the client, if we are not in passive mode
+        if not self.passive:
+            if self.clientProcess:
+                self.clientProcess.kill()
+                self.clientProcess.waitForFinished(1000)
+                self.clientProcess.deleteLater()
+                self.clientProcess = None
+            
+            self.__forProject = forProject
+            self.__createDebuggerInterface()
+            if forProject:
+                project = e5App().getObject("Project")
+                if not project.isDebugPropertiesLoaded():
+                    self.clientProcess, isNetworked, clientInterpreter = \
+                        self.debuggerInterface.startRemote(
+                            self.serverPort(), runInConsole, venvName,
+                            self.__originalPathString, workingDir=workingDir)
+                else:
+                    self.clientProcess, isNetworked, clientInterpreter = \
+                        self.debuggerInterface.startRemoteForProject(
+                            self.serverPort(), runInConsole, venvName,
+                            self.__originalPathString, workingDir=workingDir)
+            else:
+                self.clientProcess, isNetworked, clientInterpreter = \
+                    self.debuggerInterface.startRemote(
+                        self.serverPort(), runInConsole, venvName,
+                        self.__originalPathString, workingDir=workingDir)
+            
+            if self.clientProcess:
+                self.clientProcess.readyReadStandardError.connect(
+                    self.__clientProcessError)
+                self.clientProcess.readyReadStandardOutput.connect(
+                    self.__clientProcessOutput)
+                
+                # Perform actions necessary, if client type has changed
+                if self.lastClientType != self.clientType:
+                    self.lastClientType = self.clientType
+                    self.remoteBanner()
+                elif self.__autoClearShell:
+                    self.__autoClearShell = False
+                    self.remoteBanner()
+##                self.remoteClientVariables(0, [], 0)
+##                self.remoteClientVariables(1, [], 0)
+            else:
+                if clType and self.lastClientType:
+                    self.__setClientType(self.lastClientType)
+        else:
+            self.__createDebuggerInterface("None")
+            clientInterpreter = ""
+        
+        if clientInterpreter != self.clientInterpreter:
+            self.clientInterpreter = clientInterpreter
+            self.clientInterpreterChanged.emit(clientInterpreter)
+
+    def __clientProcessOutput(self):
+        """
+        Private slot to process client output received via stdout.
+        """
+        output = str(self.clientProcess.readAllStandardOutput(),
+                     Preferences.getSystem("IOEncoding"),
+                     'replace')
+        self.clientProcessStdout.emit(output)
+        
+    def __clientProcessError(self):
+        """
+        Private slot to process client output received via stderr.
+        """
+        error = str(self.clientProcess.readAllStandardError(),
+                    Preferences.getSystem("IOEncoding"),
+                    'replace')
+        self.clientProcessStderr.emit(error)
+        
+    def __clientClearBreakPoint(self, fn, lineno):
+        """
+        Private slot to handle the clientClearBreak signal.
+        
+        @param fn filename of breakpoint to clear (string)
+        @param lineno line number of breakpoint to clear (integer)
+        """
+        if self.debugging:
+            index = self.breakpointModel.getBreakPointIndex(fn, lineno)
+            self.breakpointModel.deleteBreakPointByIndex(index)
+
+    def __deleteBreakPoints(self, parentIndex, start, end):
+        """
+        Private slot to delete breakpoints.
+        
+        @param parentIndex index of parent item (QModelIndex)
+        @param start start row (integer)
+        @param end end row (integer)
+        """
+        if self.debugging:
+            for row in range(start, end + 1):
+                index = self.breakpointModel.index(row, 0, parentIndex)
+                fn, lineno = \
+                    self.breakpointModel.getBreakPointByIndex(index)[0:2]
+                self.remoteBreakpoint(fn, lineno, False)
+
+    def __changeBreakPoints(self, startIndex, endIndex):
+        """
+        Private slot to set changed breakpoints.
+        
+        @param startIndex starting index of the change breakpoins (QModelIndex)
+        @param endIndex ending index of the change breakpoins (QModelIndex)
+        """
+        if self.debugging:
+            self.__addBreakPoints(
+                QModelIndex(), startIndex.row(), endIndex.row())
+
+    def __breakPointDataAboutToBeChanged(self, startIndex, endIndex):
+        """
+        Private slot to handle the dataAboutToBeChanged signal of the
+        breakpoint model.
+        
+        @param startIndex start index of the rows to be changed (QModelIndex)
+        @param endIndex end index of the rows to be changed (QModelIndex)
+        """
+        if self.debugging:
+            self.__deleteBreakPoints(
+                QModelIndex(), startIndex.row(), endIndex.row())
+        
+    def __addBreakPoints(self, parentIndex, start, end):
+        """
+        Private slot to add breakpoints.
+        
+        @param parentIndex index of parent item (QModelIndex)
+        @param start start row (integer)
+        @param end end row (integer)
+        """
+        if self.debugging:
+            for row in range(start, end + 1):
+                index = self.breakpointModel.index(row, 0, parentIndex)
+                fn, line, cond, temp, enabled, ignorecount = \
+                    self.breakpointModel.getBreakPointByIndex(index)[:6]
+                self.remoteBreakpoint(fn, line, True, cond, temp)
+                if not enabled:
+                    self.__remoteBreakpointEnable(fn, line, False)
+                if ignorecount:
+                    self.__remoteBreakpointIgnore(fn, line, ignorecount)
+
+    def __makeWatchCondition(self, cond, special):
+        """
+        Private method to construct the condition string.
+        
+        @param cond condition (string)
+        @param special special condition (string)
+        @return condition string (string)
+        """
+        if special == "":
+            _cond = cond
+        else:
+            if special == self.watchSpecialCreated:
+                _cond = "{0} ??created??".format(cond)
+            elif special == self.watchSpecialChanged:
+                _cond = "{0} ??changed??".format(cond)
+        return _cond
+        
+    def __splitWatchCondition(self, cond):
+        """
+        Private method to split a remote watch expression.
+        
+        @param cond remote expression (string)
+        @return tuple of local expression (string) and special condition
+            (string)
+        """
+        if cond.endswith(" ??created??"):
+            cond, special = cond.split()
+            special = self.watchSpecialCreated
+        elif cond.endswith(" ??changed??"):
+            cond, special = cond.split()
+            special = self.watchSpecialChanged
+        else:
+            cond = cond
+            special = ""
+        
+        return cond, special
+        
+    def __clientClearWatchPoint(self, condition):
+        """
+        Private slot to handle the clientClearWatch signal.
+        
+        @param condition expression of watch expression to clear (string)
+        """
+        if self.debugging:
+            cond, special = self.__splitWatchCondition(condition)
+            index = self.watchpointModel.getWatchPointIndex(cond, special)
+            self.watchpointModel.deleteWatchPointByIndex(index)
+        
+    def __deleteWatchPoints(self, parentIndex, start, end):
+        """
+        Private slot to delete watch expressions.
+        
+        @param parentIndex index of parent item (QModelIndex)
+        @param start start row (integer)
+        @param end end row (integer)
+        """
+        if self.debugging:
+            for row in range(start, end + 1):
+                index = self.watchpointModel.index(row, 0, parentIndex)
+                cond, special = \
+                    self.watchpointModel.getWatchPointByIndex(index)[0:2]
+                cond = self.__makeWatchCondition(cond, special)
+                self.__remoteWatchpoint(cond, False)
+        
+    def __watchPointDataAboutToBeChanged(self, startIndex, endIndex):
+        """
+        Private slot to handle the dataAboutToBeChanged signal of the
+        watch expression model.
+        
+        @param startIndex start index of the rows to be changed (QModelIndex)
+        @param endIndex end index of the rows to be changed (QModelIndex)
+        """
+        if self.debugging:
+            self.__deleteWatchPoints(
+                QModelIndex(), startIndex.row(), endIndex.row())
+        
+    def __addWatchPoints(self, parentIndex, start, end):
+        """
+        Private slot to set a watch expression.
+        
+        @param parentIndex index of parent item (QModelIndex)
+        @param start start row (integer)
+        @param end end row (integer)
+        """
+        if self.debugging:
+            for row in range(start, end + 1):
+                index = self.watchpointModel.index(row, 0, parentIndex)
+                cond, special, temp, enabled, ignorecount = \
+                    self.watchpointModel.getWatchPointByIndex(index)[:5]
+                cond = self.__makeWatchCondition(cond, special)
+                self.__remoteWatchpoint(cond, True, temp)
+                if not enabled:
+                    self.__remoteWatchpointEnable(cond, False)
+                if ignorecount:
+                    self.__remoteWatchpointIgnore(cond, ignorecount)
+        
+    def __changeWatchPoints(self, startIndex, endIndex):
+        """
+        Private slot to set changed watch expressions.
+        
+        @param startIndex start index of the rows to be changed (QModelIndex)
+        @param endIndex end index of the rows to be changed (QModelIndex)
+        """
+        if self.debugging:
+            self.__addWatchPoints(
+                QModelIndex(), startIndex.row(), endIndex.row())
+        
+    def getClientCapabilities(self, clientType):
+        """
+        Public method to retrieve the debug clients capabilities.
+        
+        @param clientType debug client type (string)
+        @return debug client capabilities (integer)
+        """
+        try:
+            return self.__debuggerInterfaceRegistry[clientType][0]
+        except KeyError:
+            return 0    # no capabilities
+        
+    def getClientInterpreter(self):
+        """
+        Public method to get the interpreter of the debug client.
+        
+        @return interpreter of the debug client (string)
+        """
+        return self.clientInterpreter
+    
+    def getClientType(self):
+        """
+        Public method to get the currently running debug client type.
+        
+        @return debug client type
+        @rtype str
+        """
+        return self.clientType
+    
+    def isClientProcessUp(self):
+        """
+        Public method to check, if the debug client process is up.
+        
+        @return flag indicating a running debug client process
+        @rtype bool
+        """
+        return self.clientProcess is not None
+    
+    def __newConnection(self):
+        """
+        Private slot to handle a new connection.
+        """
+        sock = self.nextPendingConnection()
+        peerAddress = sock.peerAddress().toString()
+        if peerAddress not in Preferences.getDebugger("AllowedHosts"):
+            # the peer is not allowed to connect
+            res = E5MessageBox.yesNo(
+                None,
+                self.tr("Connection from illegal host"),
+                self.tr(
+                    """<p>A connection was attempted by the illegal host"""
+                    """ <b>{0}</b>. Accept this connection?</p>""")
+                .format(peerAddress),
+                icon=E5MessageBox.Warning)
+            if not res:
+                sock.abort()
+                return
+            else:
+                allowedHosts = Preferences.getDebugger("AllowedHosts")
+                allowedHosts.append(peerAddress)
+                Preferences.setDebugger("AllowedHosts", allowedHosts)
+        
+        if self.passive:
+            self.__createDebuggerInterface(
+                Preferences.getDebugger("PassiveDbgType"))
+        
+        accepted = self.debuggerInterface.newConnection(sock)
+        if accepted:
+            # Perform actions necessary, if client type has changed
+            if self.lastClientType != self.clientType:
+                self.lastClientType = self.clientType
+                self.remoteBanner()
+            elif self.__autoClearShell:
+                self.__autoClearShell = False
+                self.remoteBanner()
+            elif self.passive:
+                self.remoteBanner()
+            
+            self.debuggerInterface.flush()
+
+    def shutdownServer(self):
+        """
+        Public method to cleanly shut down.
+        
+        It closes our socket and shuts down
+        the debug client. (Needed on Win OS)
+        """
+        if self.debuggerInterface is not None:
+            self.debuggerInterface.shutdown()
+
+    def remoteEnvironment(self, env):
+        """
+        Public method to set the environment for a program to debug, run, ...
+        
+        @param env environment settings (string)
+        """
+        envlist = Utilities.parseEnvironmentString(env)
+        envdict = {}
+        for el in envlist:
+            try:
+                key, value = el.split('=', 1)
+                if value.startswith('"') or value.startswith("'"):
+                    value = value[1:-1]
+                envdict[key] = value
+            except ValueError:
+                pass
+        self.debuggerInterface.remoteEnvironment(envdict)
+        
+    def remoteLoad(self, venvName, fn, argv, wd, env, autoClearShell=True,
+                   tracePython=False, autoContinue=True, forProject=False,
+                   runInConsole=False, autoFork=False, forkChild=False,
+                   clientType="", enableCallTrace=False):
+        """
+        Public method to load a new program to debug.
+        
+        @param venvName name of the virtual environment to be used
+        @type str
+        @param fn the filename to debug
+        @type str
+        @param argv the command line arguments to pass to the program
+        @type str
+        @param wd the working directory for the program
+        @type str
+        @param env environment parameter settings
+        @type str
+        @keyparam autoClearShell flag indicating, that the interpreter window
+            should be cleared
+        @type bool
+        @keyparam tracePython flag indicating if the Python library should be
+            traced as well
+        @type bool
+        @keyparam autoContinue flag indicating, that the debugger should not
+            stop at the first executable line
+        @type bool
+        @keyparam forProject flag indicating a project related action
+        @type bool
+        @keyparam runInConsole flag indicating to start the debugger in a
+            console window
+        @type bool
+        @keyparam autoFork flag indicating the automatic fork mode
+        @type bool
+        @keyparam forkChild flag indicating to debug the child after forking
+        @type bool
+        @keyparam clientType client type to be used
+        @type str
+        @keyparam enableCallTrace flag indicating to enable the call trace
+            function
+        @type bool
+        """
+        self.__autoClearShell = autoClearShell
+        self.__autoContinue = autoContinue
+        
+        if clientType not in self.getSupportedLanguages():
+            # a not supported client language was requested
+            E5MessageBox.critical(
+                None,
+                self.tr("Start Debugger"),
+                self.tr(
+                    """<p>The debugger type <b>{0}</b> is not supported"""
+                    """ or not configured.</p>""").format(clientType)
+            )
+            return
+        
+        # Restart the client
+        try:
+            if clientType:
+                self.__setClientType(clientType)
+            else:
+                self.__setClientType(
+                    self.__findLanguageForExtension(os.path.splitext(fn)[1]))
+        except KeyError:
+            self.__setClientType('Python3')    # assume it is a Python3 file
+        self.startClient(False, forProject=forProject,
+                         runInConsole=runInConsole, venvName=venvName)
+        
+        self.setCallTraceEnabled(enableCallTrace)
+        self.remoteEnvironment(env)
+        
+        self.debuggerInterface.remoteLoad(fn, argv, wd, tracePython,
+                                          autoContinue, autoFork, forkChild)
+        self.debugging = True
+        self.running = True
+        self.__restoreBreakpoints()
+        self.__restoreWatchpoints()
+
+    def remoteRun(self, venvName, fn, argv, wd, env, autoClearShell=True,
+                  forProject=False, runInConsole=False, autoFork=False,
+                  forkChild=False, clientType=""):
+        """
+        Public method to load a new program to run.
+        
+        @param venvName name of the virtual environment to be used
+        @type str
+        @param fn the filename to debug
+        @type str
+        @param argv the command line arguments to pass to the program
+        @type str
+        @param wd the working directory for the program
+        @type str
+        @param env environment parameter settings
+        @type str
+        @keyparam autoClearShell flag indicating, that the interpreter window
+            should be cleared
+        @type bool
+        @keyparam forProject flag indicating a project related action
+        @type bool
+        @keyparam runInConsole flag indicating to start the debugger in a
+            console window
+        @type bool
+        @keyparam autoFork flag indicating the automatic fork mode
+        @type bool
+        @keyparam forkChild flag indicating to debug the child after forking
+        @type bool
+        @keyparam clientType client type to be used
+        @type str
+        """
+        self.__autoClearShell = autoClearShell
+        
+        if clientType not in self.getSupportedLanguages():
+            E5MessageBox.critical(
+                None,
+                self.tr("Start Debugger"),
+                self.tr(
+                    """<p>The debugger type <b>{0}</b> is not supported"""
+                    """ or not configured.</p>""").format(clientType)
+            )
+            # a not supported client language was requested
+            return
+        
+        # Restart the client
+        try:
+            if clientType:
+                self.__setClientType(clientType)
+            else:
+                self.__setClientType(
+                    self.__findLanguageForExtension(os.path.splitext(fn)[1]))
+        except KeyError:
+            self.__setClientType('Python3')    # assume it is a Python3 file
+        self.startClient(False, forProject=forProject,
+                         runInConsole=runInConsole, venvName=venvName)
+        
+        self.remoteEnvironment(env)
+        
+        self.debuggerInterface.remoteRun(fn, argv, wd, autoFork, forkChild)
+        self.debugging = False
+        self.running = True
+
+    def remoteCoverage(self, venvName, fn, argv, wd, env,
+                       autoClearShell=True, erase=False, forProject=False,
+                       runInConsole=False, clientType=""):
+        """
+        Public method to load a new program to collect coverage data.
+        
+        @param venvName name of the virtual environment to be used
+        @type str
+        @param fn the filename to debug
+        @type str
+        @param argv the command line arguments to pass to the program
+        @type str
+        @param wd the working directory for the program
+        @type str
+        @param env environment parameter settings
+        @type str
+        @keyparam autoClearShell flag indicating, that the interpreter window
+            should be cleared
+        @type bool
+        @keyparam erase flag indicating that coverage info should be
+            cleared first
+        @type bool
+        @keyparam forProject flag indicating a project related action
+        @type bool
+        @keyparam runInConsole flag indicating to start the debugger in a
+            console window
+        @type bool
+        @keyparam clientType client type to be used
+        @type str
+        """
+        self.__autoClearShell = autoClearShell
+        
+        if clientType not in self.getSupportedLanguages():
+            # a not supported client language was requested
+            E5MessageBox.critical(
+                None,
+                self.tr("Start Debugger"),
+                self.tr(
+                    """<p>The debugger type <b>{0}</b> is not supported"""
+                    """ or not configured.</p>""").format(clientType)
+            )
+            return
+        
+        # Restart the client
+        try:
+            if clientType:
+                self.__setClientType(clientType)
+            else:
+                self.__setClientType(
+                    self.__findLanguageForExtension(os.path.splitext(fn)[1]))
+        except KeyError:
+            self.__setClientType('Python3')    # assume it is a Python3 file
+        self.startClient(False, forProject=forProject,
+                         runInConsole=runInConsole, venvName=venvName)
+        
+        self.remoteEnvironment(env)
+        
+        self.debuggerInterface.remoteCoverage(fn, argv, wd, erase)
+        self.debugging = False
+        self.running = True
+
+    def remoteProfile(self, venvName, fn, argv, wd, env,
+                      autoClearShell=True, erase=False, forProject=False,
+                      runInConsole=False, clientType=""):
+        """
+        Public method to load a new program to collect profiling data.
+        
+        @param venvName name of the virtual environment to be used
+        @type str
+        @param fn the filename to debug
+        @type str
+        @param argv the command line arguments to pass to the program
+        @type str
+        @param wd the working directory for the program
+        @type str
+        @param env environment parameter settings
+        @type str
+        @keyparam autoClearShell flag indicating, that the interpreter window
+            should be cleared
+        @type bool
+        @keyparam erase flag indicating that coverage info should be
+            cleared first
+        @type bool
+        @keyparam forProject flag indicating a project related action
+        @type bool
+        @keyparam runInConsole flag indicating to start the debugger in a
+            console window
+        @type bool
+        @keyparam clientType client type to be used
+        @type str
+        """
+        self.__autoClearShell = autoClearShell
+        
+        if clientType not in self.getSupportedLanguages():
+            # a not supported client language was requested
+            E5MessageBox.critical(
+                None,
+                self.tr("Start Debugger"),
+                self.tr(
+                    """<p>The debugger type <b>{0}</b> is not supported"""
+                    """ or not configured.</p>""").format(clientType)
+            )
+            return
+        
+        # Restart the client
+        try:
+            if clientType:
+                self.__setClientType(clientType)
+            else:
+                self.__setClientType(
+                    self.__findLanguageForExtension(os.path.splitext(fn)[1]))
+        except KeyError:
+            self.__setClientType('Python3')    # assume it is a Python3 file
+        self.startClient(False, forProject=forProject,
+                         runInConsole=runInConsole, venvName=venvName)
+        
+        self.remoteEnvironment(env)
+        
+        self.debuggerInterface.remoteProfile(fn, argv, wd, erase)
+        self.debugging = False
+        self.running = True
+
+    def remoteStatement(self, stmt):
+        """
+        Public method to execute a Python statement.
+        
+        @param stmt the Python statement to execute (string). It
+              should not have a trailing newline.
+        """
+        self.debuggerInterface.remoteStatement(stmt)
+
+    def remoteStep(self):
+        """
+        Public method to single step the debugged program.
+        """
+        self.debuggerInterface.remoteStep()
+
+    def remoteStepOver(self):
+        """
+        Public method to step over the debugged program.
+        """
+        self.debuggerInterface.remoteStepOver()
+
+    def remoteStepOut(self):
+        """
+        Public method to step out the debugged program.
+        """
+        self.debuggerInterface.remoteStepOut()
+
+    def remoteStepQuit(self):
+        """
+        Public method to stop the debugged program.
+        """
+        self.debuggerInterface.remoteStepQuit()
+
+    def remoteContinue(self, special=False):
+        """
+        Public method to continue the debugged program.
+        
+        @param special flag indicating a special continue operation
+        """
+        self.debuggerInterface.remoteContinue(special)
+
+    def remoteMoveIP(self, line):
+        """
+        Public method to move the instruction pointer to a different line.
+        
+        @param line the new line, where execution should be continued
+        """
+        self.debuggerInterface.remoteMoveIP(line)
+
+    def remoteBreakpoint(self, fn, line, setBreakpoint, cond=None, temp=False):
+        """
+        Public method to set or clear a breakpoint.
+        
+        @param fn filename the breakpoint belongs to (string)
+        @param line linenumber of the breakpoint (int)
+        @param setBreakpoint flag indicating setting or resetting a breakpoint
+            (boolean)
+        @param cond condition of the breakpoint (string)
+        @param temp flag indicating a temporary breakpoint (boolean)
+        """
+        self.debuggerInterface.remoteBreakpoint(fn, line, setBreakpoint, cond,
+                                                temp)
+        
+    def __remoteBreakpointEnable(self, fn, line, enable):
+        """
+        Private method to enable or disable a breakpoint.
+        
+        @param fn filename the breakpoint belongs to (string)
+        @param line linenumber of the breakpoint (int)
+        @param enable flag indicating enabling or disabling a breakpoint
+            (boolean)
+        """
+        self.debuggerInterface.remoteBreakpointEnable(fn, line, enable)
+        
+    def __remoteBreakpointIgnore(self, fn, line, count):
+        """
+        Private method to ignore a breakpoint the next couple of occurrences.
+        
+        @param fn filename the breakpoint belongs to (string)
+        @param line linenumber of the breakpoint (int)
+        @param count number of occurrences to ignore (int)
+        """
+        self.debuggerInterface.remoteBreakpointIgnore(fn, line, count)
+        
+    def __remoteWatchpoint(self, cond, setWatch, temp=False):
+        """
+        Private method to set or clear a watch expression.
+        
+        @param cond expression of the watch expression (string)
+        @param setWatch flag indicating setting or resetting a watch expression
+            (boolean)
+        @param temp flag indicating a temporary watch expression (boolean)
+        """
+        # cond is combination of cond and special (s. watch expression viewer)
+        self.debuggerInterface.remoteWatchpoint(cond, setWatch, temp)
+    
+    def __remoteWatchpointEnable(self, cond, enable):
+        """
+        Private method to enable or disable a watch expression.
+        
+        @param cond expression of the watch expression (string)
+        @param enable flag indicating enabling or disabling a watch expression
+            (boolean)
+        """
+        # cond is combination of cond and special (s. watch expression viewer)
+        self.debuggerInterface.remoteWatchpointEnable(cond, enable)
+    
+    def __remoteWatchpointIgnore(self, cond, count):
+        """
+        Private method to ignore a watch expression the next couple of
+        occurrences.
+        
+        @param cond expression of the watch expression (string)
+        @param count number of occurrences to ignore (int)
+        """
+        # cond is combination of cond and special (s. watch expression viewer)
+        self.debuggerInterface.remoteWatchpointIgnore(cond, count)
+    
+    def remoteRawInput(self, s):
+        """
+        Public method to send the raw input to the debugged program.
+        
+        @param s the raw input (string)
+        """
+        self.debuggerInterface.remoteRawInput(s)
+        self.clientRawInputSent.emit()
+        
+    def remoteThreadList(self):
+        """
+        Public method to request the list of threads from the client.
+        """
+        self.debuggerInterface.remoteThreadList()
+        
+    def remoteSetThread(self, tid):
+        """
+        Public method to request to set the given thread as current thread.
+        
+        @param tid id of the thread (integer)
+        """
+        self.debuggerInterface.remoteSetThread(tid)
+        
+    def remoteClientVariables(self, scope, filterList, framenr=0):
+        """
+        Public method to request the variables of the debugged program.
+        
+        @param scope the scope of the variables (0 = local, 1 = global)
+        @param filterList list of variable types to filter out (list of int)
+        @param framenr framenumber of the variables to retrieve (int)
+        """
+        self.debuggerInterface.remoteClientVariables(
+            scope, filterList, framenr, self.__maxVariableSize)
+        
+    def remoteClientVariable(self, scope, filterList, var, framenr=0):
+        """
+        Public method to request the variables of the debugged program.
+        
+        @param scope the scope of the variables (0 = local, 1 = global)
+        @param filterList list of variable types to filter out (list of int)
+        @param var list encoded name of variable to retrieve (string)
+        @param framenr framenumber of the variables to retrieve (int)
+        """
+        self.debuggerInterface.remoteClientVariable(
+            scope, filterList, var, framenr, self.__maxVariableSize)
+        
+    def remoteClientSetFilter(self, scope, filterStr):
+        """
+        Public method to set a variables filter list.
+        
+        @param scope the scope of the variables (0 = local, 1 = global)
+        @param filterStr regexp string for variable names to filter out
+            (string)
+        """
+        self.debuggerInterface.remoteClientSetFilter(scope, filterStr)
+        
+    def setCallTraceEnabled(self, on):
+        """
+        Public method to set the call trace state.
+        
+        @param on flag indicating to enable the call trace function (boolean)
+        """
+        self.debuggerInterface.setCallTraceEnabled(on)
+        
+    def remoteBanner(self):
+        """
+        Public slot to get the banner info of the remote client.
+        """
+        self.debuggerInterface.remoteBanner()
+        
+    def remoteCapabilities(self):
+        """
+        Public slot to get the debug clients capabilities.
+        """
+        self.debuggerInterface.remoteCapabilities()
+        
+    def remoteCompletion(self, text):
+        """
+        Public slot to get the a list of possible commandline completions
+        from the remote client.
+        
+        @param text the text to be completed (string)
+        """
+        self.debuggerInterface.remoteCompletion(text)
+    
+    def remoteUTDiscover(self, clientType, forProject, venvName, syspath,
+                         workdir, discoveryStart):
+        """
+        Public method to perform a test case discovery.
+        
+        @param clientType client type to be used
+        @type str
+        @param forProject flag indicating a project related action
+        @type bool
+        @param venvName name of a virtual environment
+        @type str
+        @param syspath list of directories to be added to sys.path on the
+            remote side
+        @type list of str
+        @param workdir path name of the working directory
+        @type str
+        @param discoveryStart directory to start auto-discovery at
+        @type str
+        """
+        if clientType and clientType not in self.getSupportedLanguages():
+            # a not supported client language was requested
+            E5MessageBox.critical(
+                None,
+                self.tr("Start Debugger"),
+                self.tr(
+                    """<p>The debugger type <b>{0}</b> is not supported"""
+                    """ or not configured.</p>""").format(clientType)
+            )
+            return
+        
+        # Restart the client if there is already a program loaded.
+        try:
+            if clientType:
+                self.__setClientType(clientType)
+        except KeyError:
+            self.__setClientType('Python3')    # assume it is a Python3 file
+        self.startClient(False, forProject=forProject, venvName=venvName)
+        
+        self.debuggerInterface.remoteUTDiscover(
+            syspath, workdir, discoveryStart)
+    
+    def remoteUTPrepare(self, fn, tn, tfn, failed, cov, covname, coverase,
+                        clientType="", forProject=False, venvName="",
+                        syspath=None, workdir="", discover=False,
+                        discoveryStart="", testCases=None, debug=False):
+        """
+        Public method to prepare a new unittest run.
+        
+        @param fn the filename to load
+        @type str
+        @param tn the testname to load
+        @type str
+        @param tfn the test function name to load tests from
+        @type str
+        @param failed list of failed test, if only failed test should be run
+        @type list of str
+        @param cov flag indicating collection of coverage data is requested
+        @type bool
+        @param covname filename to be used to assemble the coverage caches
+            filename
+        @type str
+        @param coverase flag indicating erasure of coverage data is requested
+        @type bool
+        @param clientType client type to be used
+        @type str
+        @param forProject flag indicating a project related action
+        @type bool
+        @param venvName name of a virtual environment
+        @type str
+        @param syspath list of directories to be added to sys.path on the
+            remote side
+        @type list of str
+        @param workdir path name of the working directory
+        @type str
+        @param discover flag indicating to discover the tests automatically
+        @type bool
+        @param discoveryStart directory to start auto-discovery at
+        @type str
+        @param testCases list of test cases to be loaded
+        @type list of str
+        @param debug flag indicating to run unittest with debugging
+        @type bool
+        """
+        if clientType and clientType not in self.getSupportedLanguages():
+            # a not supported client language was requested
+            E5MessageBox.critical(
+                None,
+                self.tr("Start Debugger"),
+                self.tr(
+                    """<p>The debugger type <b>{0}</b> is not supported"""
+                    """ or not configured.</p>""").format(clientType)
+            )
+            return
+        
+        # Restart the client if there is already a program loaded.
+        try:
+            if clientType:
+                self.__setClientType(clientType)
+            else:
+                self.__setClientType(
+                    self.__findLanguageForExtension(os.path.splitext(fn)[1]))
+        except KeyError:
+            self.__setClientType('Python3')    # assume it is a Python3 file
+        self.startClient(False, forProject=forProject, venvName=venvName)
+        
+        self.debuggerInterface.remoteUTPrepare(
+            fn, tn, tfn, failed, cov, covname, coverase, syspath, workdir,
+            discover, discoveryStart, testCases, debug)
+        self.running = True
+        self.debugging = debug
+        if debug:
+            self.__restoreBreakpoints()
+            self.__restoreWatchpoints()
+        
+    def remoteUTRun(self, debug=False, failfast=False):
+        """
+        Public method to start a unittest run.
+        
+        @param debug flag indicating to run unittest with debugging
+        @type bool
+        @param failfast flag indicating to stop at the first error
+        @type bool
+        """
+        self.debuggerInterface.remoteUTRun(debug, failfast)
+        
+    def remoteUTStop(self):
+        """
+        public method to stop a unittest run.
+        """
+        self.debuggerInterface.remoteUTStop()
+        
+    def signalClientOutput(self, line):
+        """
+        Public method to process a line of client output.
+        
+        @param line client output (string)
+        """
+        self.clientOutput.emit(line)
+        
+    def signalClientLine(self, filename, lineno, forStack=False):
+        """
+        Public method to process client position feedback.
+        
+        @param filename name of the file currently being executed (string)
+        @param lineno line of code currently being executed (integer)
+        @param forStack flag indicating this is for a stack dump (boolean)
+        """
+        self.clientLine.emit(filename, lineno, forStack)
+        
+    def signalClientStack(self, stack):
+        """
+        Public method to process a client's stack information.
+        
+        @param stack list of stack entries. Each entry is a tuple of three
+            values giving the filename, linenumber and method
+            (list of lists of (string, integer, string))
+        """
+        self.clientStack.emit(stack)
+        
+    def signalClientThreadList(self, currentId, threadList):
+        """
+        Public method to process the client thread list info.
+        
+        @param currentId id of the current thread (integer)
+        @param threadList list of dictionaries containing the thread data
+        """
+        self.clientThreadList.emit(currentId, threadList)
+        
+    def signalClientThreadSet(self):
+        """
+        Public method to handle the change of the client thread.
+        """
+        self.clientThreadSet.emit()
+        
+    def signalClientVariables(self, scope, variables):
+        """
+        Public method to process the client variables info.
+        
+        @param scope scope of the variables (-1 = empty global, 1 = global,
+            0 = local)
+        @param variables the list of variables from the client
+        """
+        self.clientVariables.emit(scope, variables)
+        
+    def signalClientVariable(self, scope, variables):
+        """
+        Public method to process the client variable info.
+        
+        @param scope scope of the variables (-1 = empty global, 1 = global,
+            0 = local)
+        @param variables the list of members of a classvariable from the client
+        """
+        self.clientVariable.emit(scope, variables)
+        
+    def signalClientStatement(self, more):
+        """
+        Public method to process the input response from the client.
+        
+        @param more flag indicating that more user input is required
+        """
+        self.clientStatement.emit(more)
+        
+    def signalClientException(self, exceptionType, exceptionMessage,
+                              stackTrace):
+        """
+        Public method to process the exception info from the client.
+        
+        @param exceptionType type of exception raised (string)
+        @param exceptionMessage message given by the exception (string)
+        @param stackTrace list of stack entries with the exception position
+            first. Each stack entry is a list giving the filename and the
+            linenumber.
+        """
+        if self.running:
+            self.clientException.emit(exceptionType, exceptionMessage,
+                                      stackTrace)
+        
+    def signalClientSyntaxError(self, message, filename, lineNo, characterNo):
+        """
+        Public method to process the syntax error info from the client.
+        
+        @param message message of the syntax error (string)
+        @param filename translated filename of the syntax error position
+            (string)
+        @param lineNo line number of the syntax error position (integer)
+        @param characterNo character number of the syntax error position
+            (integer)
+        """
+        if self.running:
+            self.clientSyntaxError.emit(message, filename, lineNo, characterNo)
+        
+    def signalClientSignal(self, message, filename, lineNo,
+                           funcName, funcArgs):
+        """
+        Public method to process a signal generated on the client side.
+        
+        @param message message of the syntax error
+        @type str
+        @param filename translated filename of the syntax error position
+        @type str
+        @param lineNo line number of the syntax error position
+        @type int
+        @param funcName name of the function causing the signal
+        @type str
+        @param funcArgs function arguments
+        @type str
+        """
+        if self.running:
+            self.clientSignal.emit(message, filename, lineNo,
+                                   funcName, funcArgs)
+        
+    def signalClientExit(self, status, message=""):
+        """
+        Public method to process the client exit status.
+        
+        @param status exit code
+        @type int
+        @param message message sent with the exit
+        @type str
+        """
+        if self.passive:
+            self.__passiveShutDown()
+        self.clientExit.emit(int(status), message, False)
+        if Preferences.getDebugger("AutomaticReset") or (self.running and
+                                                         not self.debugging):
+            self.debugging = False
+            self.startClient(False, forProject=self.__forProject)
+        if self.passive:
+            self.__createDebuggerInterface("None")
+            self.signalClientOutput(self.tr('\nNot connected\n'))
+            self.signalClientStatement(False)
+        self.running = False
+        
+    def signalClientClearBreak(self, filename, lineno):
+        """
+        Public method to process the client clear breakpoint command.
+        
+        @param filename filename of the breakpoint (string)
+        @param lineno line umber of the breakpoint (integer)
+        """
+        self.clientClearBreak.emit(filename, lineno)
+        
+    def signalClientBreakConditionError(self, filename, lineno):
+        """
+        Public method to process the client breakpoint condition error info.
+        
+        @param filename filename of the breakpoint (string)
+        @param lineno line umber of the breakpoint (integer)
+        """
+        self.clientBreakConditionError.emit(filename, lineno)
+        
+    def signalClientClearWatch(self, condition):
+        """
+        Public slot to handle the clientClearWatch signal.
+        
+        @param condition expression of watch expression to clear (string)
+        """
+        self.clientClearWatch.emit(condition)
+        
+    def signalClientWatchConditionError(self, condition):
+        """
+        Public method to process the client watch expression error info.
+        
+        @param condition expression of watch expression to clear (string)
+        """
+        self.clientWatchConditionError.emit(condition)
+        
+    def signalClientRawInput(self, prompt, echo):
+        """
+        Public method to process the client raw input command.
+        
+        @param prompt the input prompt (string)
+        @param echo flag indicating an echoing of the input (boolean)
+        """
+        self.clientRawInput.emit(prompt, echo)
+        
+    def signalClientBanner(self, version, platform, debugClient, venvName):
+        """
+        Public method to process the client banner info.
+        
+        @param version interpreter version info
+        @type str
+        @param platform hostname of the client
+        @type str
+        @param debugClient additional debugger type info
+        @type str
+        @param venvName name of the virtual environment
+        @type str
+        """
+        self.clientBanner.emit(version, platform, debugClient, venvName)
+    
+    def signalClientCapabilities(self, capabilities, clientType, venvName):
+        """
+        Public method to process the client capabilities info.
+        
+        @param capabilities bitmaks with the client capabilities
+        @type int
+        @param clientType type of the debug client
+        @type str
+        @param venvName name of the virtual environment
+        @type str
+        """
+        try:
+            self.__debuggerInterfaceRegistry[clientType][0] = capabilities
+            self.clientCapabilities.emit(capabilities, clientType, venvName)
+        except KeyError:
+            # ignore silently
+            pass
+        
+    def signalClientCompletionList(self, completionList, text):
+        """
+        Public method to process the client auto completion info.
+        
+        @param completionList list of possible completions (list of strings)
+        @param text the text to be completed (string)
+        """
+        self.clientCompletionList.emit(completionList, text)
+        
+    def signalClientCallTrace(self, isCall, fromFile, fromLine, fromFunction,
+                              toFile, toLine, toFunction):
+        """
+        Public method to process the client call trace data.
+        
+        @param isCall flag indicating a 'call' (boolean)
+        @param fromFile name of the originating file (string)
+        @param fromLine line number in the originating file (string)
+        @param fromFunction name of the originating function (string)
+        @param toFile name of the target file (string)
+        @param toLine line number in the target file (string)
+        @param toFunction name of the target function (string)
+        """
+        self.callTraceInfo.emit(
+            isCall, fromFile, fromLine, fromFunction,
+            toFile, toLine, toFunction)
+        
+    def clientUtDiscovered(self, testCases, exceptionType, exceptionValue):
+        """
+        Public method to process the client unittest discover info.
+        
+        @param testCases list of detected test cases
+        @type str
+        @param exceptionType exception type
+        @type str
+        @param exceptionValue exception message
+        @type str
+        """
+        self.utDiscovered.emit(testCases, exceptionType, exceptionValue)
+        
+    def clientUtPrepared(self, result, exceptionType, exceptionValue):
+        """
+        Public method to process the client unittest prepared info.
+        
+        @param result number of test cases (0 = error) (integer)
+        @param exceptionType exception type (string)
+        @param exceptionValue exception message (string)
+        """
+        self.utPrepared.emit(result, exceptionType, exceptionValue)
+        
+    def clientUtStartTest(self, testname, doc):
+        """
+        Public method to process the client start test info.
+        
+        @param testname name of the test (string)
+        @param doc short description of the test (string)
+        """
+        self.utStartTest.emit(testname, doc)
+        
+    def clientUtStopTest(self):
+        """
+        Public method to process the client stop test info.
+        """
+        self.utStopTest.emit()
+        
+    def clientUtTestFailed(self, testname, traceback, testId):
+        """
+        Public method to process the client test failed info.
+        
+        @param testname name of the test (string)
+        @param traceback lines of traceback info (list of strings)
+        @param testId id of the test (string)
+        """
+        self.utTestFailed.emit(testname, traceback, testId)
+        
+    def clientUtTestErrored(self, testname, traceback, testId):
+        """
+        Public method to process the client test errored info.
+        
+        @param testname name of the test (string)
+        @param traceback lines of traceback info (list of strings)
+        @param testId id of the test (string)
+        """
+        self.utTestErrored.emit(testname, traceback, testId)
+        
+    def clientUtTestSkipped(self, testname, reason, testId):
+        """
+        Public method to process the client test skipped info.
+        
+        @param testname name of the test (string)
+        @param reason reason for skipping the test (string)
+        @param testId id of the test (string)
+        """
+        self.utTestSkipped.emit(testname, reason, testId)
+        
+    def clientUtTestFailedExpected(self, testname, traceback, testId):
+        """
+        Public method to process the client test failed expected info.
+        
+        @param testname name of the test (string)
+        @param traceback lines of traceback info (list of strings)
+        @param testId id of the test (string)
+        """
+        self.utTestFailedExpected.emit(testname, traceback, testId)
+        
+    def clientUtTestSucceededUnexpected(self, testname, testId):
+        """
+        Public method to process the client test succeeded unexpected info.
+        
+        @param testname name of the test (string)
+        @param testId id of the test (string)
+        """
+        self.utTestSucceededUnexpected.emit(testname, testId)
+        
+    def clientUtFinished(self, status):
+        """
+        Public method to process the client unit test finished info.
+        
+        @param status exit status of the unit test
+        @type int
+        """
+        self.utFinished.emit()
+        
+        self.clientExit.emit(int(status), "", True)
+        self.debugging = False
+        self.running = False
+        
+    def passiveStartUp(self, fn, exc):
+        """
+        Public method to handle a passive debug connection.
+        
+        @param fn filename of the debugged script (string)
+        @param exc flag to enable exception reporting of the IDE (boolean)
+        """
+        self.appendStdout.emit(self.tr("Passive debug connection received\n"))
+        self.passiveClientExited = False
+        self.debugging = True
+        self.running = True
+        self.__restoreBreakpoints()
+        self.__restoreWatchpoints()
+        self.passiveDebugStarted.emit(fn, exc)
+        
+    def __passiveShutDown(self):
+        """
+        Private method to shut down a passive debug connection.
+        """
+        self.passiveClientExited = True
+        self.shutdownServer()
+        self.appendStdout.emit(self.tr("Passive debug connection closed\n"))
+        
+    def __restoreBreakpoints(self):
+        """
+        Private method to restore the breakpoints after a restart.
+        """
+        if self.debugging:
+            self.__addBreakPoints(
+                QModelIndex(), 0, self.breakpointModel.rowCount() - 1)
+    
+    def __restoreWatchpoints(self):
+        """
+        Private method to restore the watch expressions after a restart.
+        """
+        if self.debugging:
+            self.__addWatchPoints(
+                QModelIndex(), 0, self.watchpointModel.rowCount() - 1)
+    
+    def getBreakPointModel(self):
+        """
+        Public slot to get a reference to the breakpoint model object.
+        
+        @return reference to the breakpoint model object (BreakPointModel)
+        """
+        return self.breakpointModel
+
+    def getWatchPointModel(self):
+        """
+        Public slot to get a reference to the watch expression model object.
+        
+        @return reference to the watch expression model object
+            (WatchPointModel)
+        """
+        return self.watchpointModel
+    
+    def isConnected(self):
+        """
+        Public method to test, if the debug server is connected to a backend.
+        
+        @return flag indicating a connection (boolean)
+        """
+        return self.debuggerInterface and self.debuggerInterface.isConnected()
+    
+    def isDebugging(self):
+        """
+        Public method to test, if the debug server is debugging.
+        
+        @return flag indicating the debugging state
+        @rtype bool
+        """
+        return self.debugging
+    
+    def setDebugging(self, on):
+        """
+        Public method to set the debugging state.
+        
+        @param on flag indicating the new debugging state
+        @type bool
+        """
+        self.debugging = on

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