eric6/Plugins/WizardPlugins/SetupWizard/SetupWizardDialog.py

Wed, 29 May 2019 22:14:02 +0200

author
T.Rzepka <Tobias.Rzepka@gmail.com>
date
Wed, 29 May 2019 22:14:02 +0200
branch
Variables Viewer
changeset 7030
73779c4c135a
parent 7005
342819f05839
child 7192
a22eee00b052
permissions
-rw-r--r--

Bugfix displaying to many characters as default_factory type.

# -*- coding: utf-8 -*-

# Copyright (c) 2013 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing the setup.py wizard dialog.
"""

from __future__ import unicode_literals
try:
    str = unicode    # __IGNORE_WARNING__
except NameError:
    pass

import os
import sys
import datetime

from PyQt5.QtCore import pyqtSlot, Qt, QUrl
from PyQt5.QtWidgets import QDialog, QDialogButtonBox, QTreeWidgetItem, \
    QListWidgetItem, QApplication
from PyQt5.QtNetwork import QNetworkRequest, QNetworkReply

from E5Gui.E5Application import e5App
from E5Gui import E5MessageBox, E5FileDialog
from E5Gui.E5Completers import E5DirCompleter

from .Ui_SetupWizardDialog import Ui_SetupWizardDialog

import UI.PixmapCache
import Utilities
import Preferences


class SetupWizardDialog(QDialog, Ui_SetupWizardDialog):
    """
    Class implementing the setup.py wizard dialog.
    
    It displays a dialog for entering the parameters
    for the E5MessageBox code generator.
    """
    ClassifiersUrl = "https://pypi.org/pypi?%3Aaction=list_classifiers"
    
    def __init__(self, parent=None):
        """
        Constructor
        
        @param parent reference to the parent widget (QWidget)
        """
        super(SetupWizardDialog, self).__init__(parent)
        self.setupUi(self)
        
        self.__replies = []
        
        self.dataTabWidget.setCurrentIndex(0)
        
        self.__packageDirCompleter = E5DirCompleter(self.packageEdit)
        self.__packageRootDirCompleter = E5DirCompleter(self.packageRootEdit)
        self.__sourceDirCompleter = E5DirCompleter(self.sourceDirectoryEdit)
        
        self.packageRootDirButton.setIcon(UI.PixmapCache.getIcon("open.png"))
        self.packageDirButton.setIcon(UI.PixmapCache.getIcon("open.png"))
        self.sourceDirectoryButton.setIcon(UI.PixmapCache.getIcon("open.png"))
        
        self.variantComboBox.addItem(self.tr("distutils"), "distutils.core")
        self.variantComboBox.addItem(self.tr("setuptools"), "setuptools")
        self.variantComboBox.setCurrentIndex(1)
        
        self.__mandatoryStyleSheet = "QLineEdit {border: 2px solid;}"
        for lineEdit in [self.nameEdit, self.versionEdit,
                         self.homePageUrlEdit, self.authorEdit,
                         self.authorEmailEdit, self.maintainerEdit,
                         self.maintainerEmailEdit]:
            lineEdit.setStyleSheet(self.__mandatoryStyleSheet)
        
        self.__loadClassifiersFromPyPI()
        
        self.__okButton = self.buttonBox.button(QDialogButtonBox.Ok)
        self.__okButton.setEnabled(False)
        
        projectOpen = e5App().getObject("Project").isOpen()
        self.projectButton.setEnabled(projectOpen)
        self.autodiscoverPackagesButton.setEnabled(projectOpen)
        
        self.homePageUrlEdit.textChanged.connect(self.__enableOkButton)
        self.nameEdit.textChanged.connect(self.__enableOkButton)
        self.versionEdit.textChanged.connect(self.__enableOkButton)
        self.authorEdit.textChanged.connect(self.__enableOkButton)
        self.authorEmailEdit.textChanged.connect(self.__enableOkButton)
        self.maintainerEdit.textChanged.connect(self.__enableOkButton)
        self.maintainerEmailEdit.textChanged.connect(self.__enableOkButton)
    
    def __enableOkButton(self):
        """
        Private slot to set the state of the OK button.
        """
        enable = (
            bool(self.nameEdit.text()) and
            bool(self.versionEdit.text()) and
            bool(self.homePageUrlEdit.text()) and
            ((bool(self.authorEdit.text()) and
                bool(self.authorEmailEdit.text())) or
             (bool(self.maintainerEdit.text()) and
              bool(self.maintainerEmailEdit.text()))) and
            self.homePageUrlEdit.text().startswith(("http://", "https://"))
        )
        
        self.__okButton.setEnabled(enable)
    
    def __loadClassifiersFromPyPI(self):
        """
        Private method to populate the classifiers list with data retrieved
        from PyPI.
        """
        request = QNetworkRequest(QUrl(SetupWizardDialog.ClassifiersUrl))
        request.setAttribute(QNetworkRequest.CacheLoadControlAttribute,
                             QNetworkRequest.AlwaysNetwork)
        reply = e5App().getObject("UserInterface").networkAccessManager().get(
            request)
        reply.finished.connect(lambda: self.__classifiersDownloadDone(reply))
        self.__replies.append(reply)

    @pyqtSlot()
    def __classifiersDownloadDone(self, reply):
        """
        Private slot called, after the classifiers file has been downloaded
        from the internet.
        
        @param reply reference to the network reply
        @type QNetworkReply
        """
        reply.deleteLater()
        if reply in self.__replies:
            self.__replies.remove(reply)
        if reply.error() == QNetworkReply.NoError:
            ioEncoding = Preferences.getSystem("IOEncoding")
            lines = str(reply.readAll(), ioEncoding, 'replace').splitlines()
            
            self.__populateClassifiers(lines)
        
        reply.close()
    
    @pyqtSlot()
    def on_localClassifiersButton_clicked(self):
        """
        Private method to populate lists from the Trove list file.
        
        Note: The trove list file was created from querying
        "https://pypi.org/pypi?%3Aaction=list_classifiers".
        """
        filename = os.path.join(os.path.dirname(__file__),
                                "data", "trove_classifiers.txt")
        try:
            f = open(filename, "r")
            lines = f.readlines()
            f.close()
        except (IOError, OSError) as err:
            E5MessageBox.warning(
                self,
                self.tr("Reading Trove Classifiers"),
                self.tr("""<p>The Trove Classifiers file <b>{0}</b>"""
                        """ could not be read.</p><p>Reason: {1}</p>""")
                .format(filename, str(err)))
            return
        
        self.__populateClassifiers(lines)
    
    def __populateClassifiers(self, classifiers):
        """
        Private method to populate the classifiers.
        
        @param classifiers list of classifiers read from a local file or
            retrieved from PyPI
        @type list of str
        """
        self.licenseClassifierComboBox.clear()
        self.classifiersList.clear()
        self.developmentStatusComboBox.clear()
        
        self.developmentStatusComboBox.addItem("", "")
        
        self.__classifiersDict = {}
        for line in classifiers:
            line = line.strip()
            if line.startswith("License "):
                self.licenseClassifierComboBox.addItem(
                    "/".join(line.split(" :: ")[1:]),
                    line
                )
            elif line.startswith("Development Status "):
                self.developmentStatusComboBox.addItem(
                    line.split(" :: ")[1], line)
            else:
                self.__addClassifierEntry(line)
        self.__classifiersDict = {}
        
        self.licenseClassifierComboBox.setCurrentIndex(
            self.licenseClassifierComboBox.findText(
                "(GPLv3)", Qt.MatchContains | Qt.MatchCaseSensitive))
    
    def __addClassifierEntry(self, line):
        """
        Private method to add a new entry to the list of trove classifiers.
        
        @param line line containing the data for the entry (string)
        """
        itm = None
        pitm = None
        dataList = line.split(" :: ")
        for index in range(len(dataList)):
            key = " :: ".join(dataList[:index + 1])
            if key not in self.__classifiersDict:
                if pitm is None:
                    itm = QTreeWidgetItem(
                        self.classifiersList, [dataList[index]])
                    pitm = itm
                else:
                    itm = QTreeWidgetItem(pitm, [dataList[index]])
                itm.setExpanded(True)
                self.__classifiersDict[key] = itm
            else:
                pitm = self.__classifiersDict[key]
        itm.setCheckState(0, Qt.Unchecked)
        itm.setData(0, Qt.UserRole, line)
    
    def __getLicenseText(self):
        """
        Private method to get the license text.
        
        @return license text (string)
        """
        if not self.licenseClassifierCheckBox.isChecked():
            return self.licenseEdit.text()
        else:
            lic = self.licenseClassifierComboBox.currentText()
            if "(" in lic:
                lic = lic.rsplit("(", 1)[1].split(")", 1)[0]
            return lic
    
    def getCode(self, indLevel, indString):
        """
        Public method to get the source code.
        
        @param indLevel indentation level (int)
        @param indString string used for indentation (space or tab) (string)
        @return generated code (string)
        """
        # Note: all paths are created with '/'; setup will do the right thing
        
        # calculate our indentation level and the indentation string
        il = indLevel + 1
        istring = il * indString
        i1string = (il + 1) * indString
        i2string = (il + 2) * indString
        estring = os.linesep + indLevel * indString
        
        # now generate the code
        if self.introCheckBox.isChecked():
            code = "#!/usr/bin/env python{0}{1}".format(
                sys.version_info[0], os.linesep)
            code += "# -*- coding: utf-8 -*-{0}{0}".format(os.linesep)
        else:
            code = ""
        
        if self.metaDataCheckBox.isChecked():
            code += '# metadata{0}'.format(os.linesep)
            code += '"{0}"{1}'.format(
                self.summaryEdit.text() or "Setup routine",
                os.linesep
            )
            code += '__version__ = "{0}"{1}'.format(
                self.versionEdit.text(), os.linesep)
            code += '__license__ = "{0}"{1}'.format(
                self.__getLicenseText(), os.linesep)
            code += '__author__ = "{0}"{1}'.format(
                self.authorEdit.text() or self.maintainerEdit.text(),
                os.linesep)
            code += '__email__ = "{0}"{1}'.format(
                self.authorEmailEdit.text() or self.maintainerEmailEdit.text(),
                os.linesep)
            code += '__url__ = "{0}"{1}'.format(
                self.homePageUrlEdit.text(), os.linesep)
            code += '__date__ = "{0}"{1}'.format(
                datetime.datetime.now().isoformat().split('.')[0], os.linesep)
            code += '__prj__ = "{0}"{1}'.format(
                self.nameEdit.text(), os.linesep)
            code += os.linesep
        
        if self.descriptionFromFilesCheckBox.isChecked():
            code += "from __future__ import with_statement{0}".format(
                os.linesep)
        
        if self.importCheckBox.isChecked():
            variant = self.variantComboBox.itemData(
                self.variantComboBox.currentIndex())
            if variant == "setuptools":
                additionalImport = ", find_packages"
            else:
                additionalImport = ""
            code += "from {0} import setup{1}{2}".format(
                variant, additionalImport, os.linesep)
        if code:
            code += "{0}{0}".format(os.linesep)
        
        if self.descriptionFromFilesCheckBox.isChecked():
            code += 'def get_long_description():{0}'.format(os.linesep)
            code += '{0}descr = []{1}'.format(istring, os.linesep)
            code += '{0}for fname in "{1}":{2}'.format(
                istring,
                '", "'.join(self.descriptionEdit.toPlainText().splitlines()),
                os.linesep)
            code += '{0}{0}with open(fname) as f:{1}'.format(
                istring, os.linesep)
            code += '{0}{0}{0}descr.append(f.read()){1}'.format(
                istring, os.linesep)
            code += '{0}return "\\n\\n".join(descr){1}'.format(
                istring, os.linesep)
            code += "{0}{0}".format(os.linesep)
        
        code += 'setup({0}'.format(os.linesep)
        code += '{0}name="{1}",{2}'.format(
            istring, self.nameEdit.text(), os.linesep)
        code += '{0}version="{1}",{2}'.format(
            istring, self.versionEdit.text(), os.linesep)
        
        if self.summaryEdit.text():
            code += '{0}description="{1}",{2}'.format(
                istring, self.summaryEdit.text(), os.linesep)
        
        if self.descriptionFromFilesCheckBox.isChecked():
            code += '{0}long_description=get_long_description(),{1}'.format(
                istring, os.linesep)
        elif self.descriptionEdit.toPlainText():
            code += '{0}long_description="""{1}""",{2}'.format(
                istring, self.descriptionEdit.toPlainText(), os.linesep)
        
        if self.authorEdit.text():
            code += '{0}author="{1}",{2}'.format(
                istring, self.authorEdit.text(), os.linesep)
            code += '{0}author_email="{1}",{2}'.format(
                istring, self.authorEmailEdit.text(), os.linesep)
        
        if self.maintainerEdit.text():
            code += '{0}maintainer="{1}",{2}'.format(
                istring, self.maintainerEdit.text(), os.linesep)
            code += '{0}maintainer_email="{1}",{2}'.format(
                istring, self.maintainerEmailEdit.text(), os.linesep)
        
        code += '{0}url="{1}",{2}'.format(
            istring, self.homePageUrlEdit.text(), os.linesep)
        if self.downloadUrlEdit.text():
            code += '{0}download_url="{1}",{2}'.format(
                istring, self.downloadUrlEdit.text(), os.linesep)
        
        classifiers = []
        if not self.licenseClassifierCheckBox.isChecked():
            code += '{0}license="{1}",{2}'.format(
                istring, self.licenseEdit.text(), os.linesep)
        else:
            classifiers.append(
                self.licenseClassifierComboBox.itemData(
                    self.licenseClassifierComboBox.currentIndex()))
        
        platforms = self.platformsEdit.toPlainText().splitlines()
        if platforms:
            code += '{0}platforms=[{1}'.format(istring, os.linesep)
            code += '{0}"{1}"{2}'.format(
                i1string,
                '",{0}{1}"'.format(os.linesep, i1string).join(platforms),
                os.linesep)
            code += '{0}],{1}'.format(istring, os.linesep)
        
        if self.developmentStatusComboBox.currentIndex() != 0:
            classifiers.append(
                self.developmentStatusComboBox.itemData(
                    self.developmentStatusComboBox.currentIndex()))
        
        itm = self.classifiersList.topLevelItem(0)
        while itm:
            itm.setExpanded(True)
            if itm.checkState(0) == Qt.Checked:
                classifiers.append(itm.data(0, Qt.UserRole))
            itm = self.classifiersList.itemBelow(itm)
        
        # cleanup classifiers list - remove all invalid entries
        classifiers = [c for c in classifiers if bool(c)]
        if classifiers:
            code += '{0}classifiers=[{1}'.format(istring, os.linesep)
            code += '{0}"{1}"{2}'.format(
                i1string,
                '",{0}{1}"'.format(os.linesep, i1string).join(classifiers),
                os.linesep)
            code += '{0}],{1}'.format(istring, os.linesep)
        del classifiers
        
        if self.keywordsEdit.text():
            code += '{0}keywords="{1}",{2}'.format(
                istring, self.keywordsEdit.text(), os.linesep)
        
        if self.variantComboBox.currentIndex() == 0:
            # distutils
            packages = []
            for row in range(self.packagesList.count()):
                packages.append(self.packagesList.item(row).text())
            if packages:
                code += '{0}packages=[{1}'.format(istring, os.linesep)
                code += '{0}"{1}"{2}'.format(
                    i1string,
                    '",{0}{1}"'.format(os.linesep, i1string).join(packages),
                    os.linesep)
                code += '{0}],{1}'.format(istring, os.linesep)
            del packages
        elif self.variantComboBox.currentIndex() == 1:
            # setuptools
            code += '{0}packages=find_packages('.format(istring)
            src = Utilities.fromNativeSeparators(
                self.sourceDirectoryEdit.text())
            excludePatterns = []
            for row in range(self.excludePatternList.count()):
                excludePatterns.append(
                    self.excludePatternList.item(row).text())
            if src:
                code += '{0}{1}"{2}"'.format(os.linesep, i1string, src)
                if excludePatterns:
                    code += ','
                else:
                    code += '{0}{1}'.format(os.linesep, istring)
            if excludePatterns:
                code += '{0}{1}exclude=[{0}'.format(os.linesep, i1string)
                code += '{0}"{1}"{2}'.format(
                    i2string,
                    '",{0}{1}"'.format(os.linesep, i2string)
                    .join(excludePatterns),
                    os.linesep)
                code += '{0}]{1}{2}'.format(i1string, os.linesep, istring)
            code += '),{0}'.format(os.linesep)
            
            if self.includePackageDataCheckBox.isChecked():
                code += '{0}include_package_data = True,{1}'.format(
                    istring, os.linesep)
        
        modules = []
        for row in range(self.modulesList.count()):
            modules.append(self.modulesList.item(row).text())
        if modules:
            code += '{0}py_modules=[{1}'.format(istring, os.linesep)
            code += '{0}"{1}"{2}'.format(
                i1string,
                '",{0}{1}"'.format(os.linesep, i1string).join(modules),
                os.linesep)
            code += '{0}],{1}'.format(istring, os.linesep)
        del modules
        
        scripts = []
        for row in range(self.scriptsList.count()):
            scripts.append(self.scriptsList.item(row).text())
        if scripts:
            code += '{0}scripts=[{1}'.format(istring, os.linesep)
            code += '{0}"{1}"{2}'.format(
                i1string,
                '",{0}{1}"'.format(os.linesep, i1string).join(scripts),
                os.linesep)
            code += '{0}],{1}'.format(istring, os.linesep)
        del scripts
        
        code += "){0}".format(estring)
        return code
    
    @pyqtSlot()
    def on_projectButton_clicked(self):
        """
        Private slot to populate some fields with data retrieved from the
        current project.
        """
        project = e5App().getObject("Project")
        
        self.nameEdit.setText(project.getProjectName())
        try:
            self.versionEdit.setText(project.getProjectVersion())
            self.authorEdit.setText(project.getProjectAuthor())
            self.authorEmailEdit.setText(project.getProjectAuthorEmail())
            description = project.getProjectDescription()
        except AttributeError:
            self.versionEdit.setText(project.pdata["VERSION"][0])
            self.authorEdit.setText(project.pdata["AUTHOR"][0])
            self.authorEmailEdit.setText(project.pdata["EMAIL"][0])
            description = project.pdata["DESCRIPTION"][0]
        
        summary = description.split(".", 1)[0]\
            .replace("\r", "").replace("\n", "") + "."
        self.summaryEdit.setText(summary)
        self.descriptionEdit.setPlainText(description)
        
        self.packageRootEdit.setText(project.getProjectPath())
        
        # prevent overwriting of entries by disabling the button
        self.projectButton.setEnabled(False)
    
    @pyqtSlot()
    def on_packagesList_itemSelectionChanged(self):
        """
        Private slot to handle a change of selected items of the
        packages list.
        """
        self.deletePackageButton.setEnabled(
            len(self.packagesList.selectedItems()) > 0)
    
    @pyqtSlot()
    def on_deletePackageButton_clicked(self):
        """
        Private slot to delete the selected package items.
        """
        for itm in self.packagesList.selectedItems():
            self.packagesList.takeItem(
                self.packagesList.row(itm))
            del itm
    
    @pyqtSlot()
    def on_addPackageButton_clicked(self):
        """
        Private slot to add a package to the list.
        """
        pkg = Utilities.toNativeSeparators(self.packageEdit.text())
        self.__addPackage(pkg)
    
    @pyqtSlot()
    def on_packageEdit_returnPressed(self):
        """
        Private slot handling a press of the return button of the
        package edit.
        """
        self.on_addPackageButton_clicked()
    
    @pyqtSlot(str)
    def on_packageEdit_textChanged(self, txt):
        """
        Private slot to handle a change of the package text.
        
        @param txt text of the line edit (string)
        """
        self.addPackageButton.setEnabled(bool(txt))
    
    @pyqtSlot()
    def on_packageDirButton_clicked(self):
        """
        Private slot to select a package directory via a directory
        selection dialog.
        """
        startDir = self.packageEdit.text()
        if not startDir:
            startDir = self.packageRootEdit.text() or self.__getStartDir()
        packageDir = E5FileDialog.getExistingDirectory(
            self,
            self.tr("Package Directory"),
            Utilities.fromNativeSeparators(startDir))
        if packageDir:
            self.packageEdit.setText(
                Utilities.toNativeSeparators(packageDir))
    
    @pyqtSlot()
    def on_autodiscoverPackagesButton_clicked(self):
        """
        Private slot to discover packages automatically.
        """
        self.autodiscoverPackagesButton.setEnabled(False)
        QApplication.setOverrideCursor(Qt.WaitCursor)
        startDir = self.packageRootEdit.text() or self.__getStartDir()
        if startDir:
            self.packagesList.clear()
            for dirpath, _dirnames, filenames in os.walk(startDir):
                if "__init__.py" in filenames:
                    self.__addPackage(dirpath)
        self.autodiscoverPackagesButton.setEnabled(True)
        QApplication.restoreOverrideCursor()
    
    @pyqtSlot()
    def on_packageRootDirButton_clicked(self):
        """
        Private slot to select the packages root directory via a
        directory selection dialog.
        """
        startDir = self.packageRootEdit.text()
        if not startDir:
            startDir = self.__getStartDir()
        packagesRootDir = E5FileDialog.getExistingDirectory(
            self,
            self.tr("Packages Root Directory"),
            Utilities.fromNativeSeparators(startDir),
            E5FileDialog.Options(E5FileDialog.ShowDirsOnly))
        if packagesRootDir:
            self.packageRootEdit.setText(
                Utilities.toNativeSeparators(packagesRootDir))
    
    @pyqtSlot(str)
    def on_packageRootEdit_textChanged(self, txt):
        """
        Private slot handling the entering of a packages root.
        
        @param txt text of the line edit (string)
        """
        projectOpen = e5App().getObject("Project").isOpen()
        validPackagesRoot = bool(txt) and os.path.exists(txt)
        self.autodiscoverPackagesButton.setEnabled(
            projectOpen or validPackagesRoot)
    
    def __addPackage(self, pkgDir):
        """
        Private method to add a package to the list.
        
        @param pkgDir name of the package directory (string)
        """
        if pkgDir:
            if "\\" in pkgDir or "/" in pkgDir:
                # It is a directory. Check for an __init__.py file.
                if os.path.isabs(pkgDir):
                    prefix = ""
                else:
                    prefix = self.packageRootEdit.text()
                initName = os.path.join(
                    prefix,
                    Utilities.toNativeSeparators(pkgDir),
                    "__init__.py")
                if not os.path.exists(initName):
                    res = E5MessageBox.information(
                        self,
                        self.tr("Add Package"),
                        self.tr("""<p>The directory <b>{0}</b> is not"""
                                """ a Python package.</p>""")
                        .format(pkgDir),
                        E5MessageBox.StandardButtons(
                            E5MessageBox.Ignore |
                            E5MessageBox.Ok))
                    if res == E5MessageBox.Ok:
                        return
            
            pkg = pkgDir.replace(
                Utilities.toNativeSeparators(self.packageRootEdit.text()), "")
            if pkg.startswith(("\\", "/")):
                pkg = pkg[1:]
            if pkg:
                QListWidgetItem(
                    pkg.replace("\\", ".").replace("/", "."),
                    self.packagesList)
                self.packageEdit.clear()
    
    def __getStartDir(self):
        """
        Private method to get the start directory for selection dialogs.
        
        @return start directory (string)
        """
        return (Preferences.getMultiProject("Workspace") or
                Utilities.getHomeDir())
    
    @pyqtSlot()
    def on_scriptsList_itemSelectionChanged(self):
        """
        Private slot to handle a change of selected items of the
        scripts list.
        """
        self.deleteScriptButton.setEnabled(
            len(self.scriptsList.selectedItems()) > 0)
    
    @pyqtSlot()
    def on_deleteScriptButton_clicked(self):
        """
        Private slot to delete the selected script items.
        """
        for itm in self.scriptsList.selectedItems():
            self.scriptsList.takeItem(
                self.scriptsList.row(itm))
            del itm
    
    @pyqtSlot()
    def on_addScriptButton_clicked(self):
        """
        Private slot to add scripts to the list.
        """
        startDir = self.packageRootEdit.text() or self.__getStartDir()
        scriptsList = E5FileDialog.getOpenFileNames(
            self,
            self.tr("Add Scripts"),
            startDir,
            self.tr("Python Files (*.py);;All Files(*)"))
        for script in scriptsList:
            script = script.replace(
                Utilities.toNativeSeparators(startDir), "")
            if script.startswith(("\\", "/")):
                script = script[1:]
            if script:
                QListWidgetItem(Utilities.fromNativeSeparators(script),
                                self.scriptsList)
    
    @pyqtSlot()
    def on_modulesList_itemSelectionChanged(self):
        """
        Private slot to handle a change of selected items of the
        modules list.
        """
        self.deleteModuleButton.setEnabled(
            len(self.modulesList.selectedItems()) > 0)
    
    @pyqtSlot()
    def on_deleteModuleButton_clicked(self):
        """
        Private slot to delete the selected script items.
        """
        for itm in self.modulesList.selectedItems():
            self.modulesList.takeItem(
                self.modulesList.row(itm))
            del itm
    
    @pyqtSlot()
    def on_addModuleButton_clicked(self):
        """
        Private slot to add Python modules to the list.
        """
        startDir = self.packageRootEdit.text() or self.__getStartDir()
        modulesList = E5FileDialog.getOpenFileNames(
            self,
            self.tr("Add Python Modules"),
            startDir,
            self.tr("Python Files (*.py)"))
        for module in modulesList:
            module = module.replace(
                Utilities.toNativeSeparators(startDir), "")
            if module.startswith(("\\", "/")):
                module = module[1:]
            if module:
                QListWidgetItem(os.path.splitext(module)[0]
                                .replace("\\", ".").replace("/", "."),
                                self.modulesList)
    
    @pyqtSlot(int)
    def on_variantComboBox_currentIndexChanged(self, index):
        """
        Private slot handling a change of the setup variant.
        
        @param index index of the selected entry (integer)
        """
        self.packagesStackedWidget.setCurrentIndex(index)
    
    @pyqtSlot()
    def on_excludePatternList_itemSelectionChanged(self):
        """
        Private slot to handle a change of selected items of the
        exclude pattern list.
        """
        self.deleteExcludePatternButton.setEnabled(
            len(self.excludePatternList.selectedItems()) > 0)
    
    @pyqtSlot()
    def on_deleteExcludePatternButton_clicked(self):
        """
        Private slot to delete the selected exclude pattern items.
        """
        for itm in self.excludePatternList.selectedItems():
            self.excludePatternList.takeItem(
                self.excludePatternList.row(itm))
            del itm
    
    @pyqtSlot()
    def on_addExludePatternButton_clicked(self):
        """
        Private slot to add an exclude pattern to the list.
        """
        pattern = self.excludePatternEdit.text()\
            .replace("\\", ".").replace("/", ".")
        if not self.excludePatternList.findItems(
                pattern, Qt.MatchExactly | Qt.MatchCaseSensitive):
            QListWidgetItem(pattern, self.excludePatternList)
    
    @pyqtSlot(str)
    def on_excludePatternEdit_textChanged(self, txt):
        """
        Private slot to handle a change of the exclude pattern text.
        
        @param txt text of the line edit (string)
        """
        self.addExludePatternButton.setEnabled(bool(txt))
    
    @pyqtSlot()
    def on_excludePatternEdit_returnPressed(self):
        """
        Private slot handling a press of the return button of the
        exclude pattern edit.
        """
        self.on_addExludePatternButton_clicked()
    
    @pyqtSlot()
    def on_sourceDirectoryButton_clicked(self):
        """
        Private slot to select the packages root directory via a
        directory selection dialog.
        """
        startDir = self.sourceDirectoryEdit.text() or self.__getStartDir()
        sourceDirectory = E5FileDialog.getExistingDirectory(
            self,
            self.tr("Source Directory"),
            Utilities.fromNativeSeparators(startDir),
            E5FileDialog.Options(E5FileDialog.ShowDirsOnly))
        if sourceDirectory:
            self.sourceDirectoryEdit.setText(
                Utilities.toNativeSeparators(sourceDirectory))

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