Plugins/WizardPlugins/QRegularExpressionWizard/QRegularExpressionWizardDialog.py

branch
Py2 comp.
changeset 2791
a9577f248f04
parent 2771
281c9b30dd91
child 2847
1843ef6e2656
diff -r 6686a3326df8 -r a9577f248f04 Plugins/WizardPlugins/QRegularExpressionWizard/QRegularExpressionWizardDialog.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Plugins/WizardPlugins/QRegularExpressionWizard/QRegularExpressionWizardDialog.py	Mon Jul 08 22:36:10 2013 +0200
@@ -0,0 +1,787 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2013 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing the QRegularExpression wizard dialog.
+"""
+
+from __future__ import unicode_literals    # __IGNORE_WARNING__
+
+import os
+import re
+import sys
+import json
+
+from PyQt4.QtCore import QFileInfo, pyqtSlot, qVersion, QProcess, QByteArray
+from PyQt4.QtGui import QWidget, QDialog, QInputDialog, QApplication, QClipboard, \
+    QTextCursor, QDialogButtonBox, QVBoxLayout, QTableWidgetItem
+
+from E5Gui import E5MessageBox, E5FileDialog
+from E5Gui.E5MainWindow import E5MainWindow
+
+from .Ui_QRegularExpressionWizardDialog import Ui_QRegularExpressionWizardDialog
+
+import UI.PixmapCache
+
+import Utilities
+import Preferences
+
+
+class QRegularExpressionWizardWidget(QWidget, Ui_QRegularExpressionWizardDialog):
+    """
+    Class implementing the QRegularExpression wizard dialog.
+    """
+    def __init__(self, parent=None, fromEric=True):
+        """
+        Constructor
+        
+        @param parent parent widget (QWidget)
+        @param fromEric flag indicating a call from within eric5
+        """
+        super(QRegularExpressionWizardWidget, self).__init__(parent)
+        self.setupUi(self)
+        
+        # initialize icons of the tool buttons
+        self.commentButton.setIcon(UI.PixmapCache.getIcon("comment.png"))
+        self.charButton.setIcon(UI.PixmapCache.getIcon("characters.png"))
+        self.anycharButton.setIcon(UI.PixmapCache.getIcon("anychar.png"))
+        self.repeatButton.setIcon(UI.PixmapCache.getIcon("repeat.png"))
+        self.nonGroupButton.setIcon(UI.PixmapCache.getIcon("nongroup.png"))
+        self.atomicGroupButton.setIcon(UI.PixmapCache.getIcon("atomicgroup.png"))
+        self.groupButton.setIcon(UI.PixmapCache.getIcon("group.png"))
+        self.namedGroupButton.setIcon(UI.PixmapCache.getIcon("namedgroup.png"))
+        self.namedReferenceButton.setIcon(UI.PixmapCache.getIcon("namedreference.png"))
+        self.altnButton.setIcon(UI.PixmapCache.getIcon("altn.png"))
+        self.beglineButton.setIcon(UI.PixmapCache.getIcon("begline.png"))
+        self.endlineButton.setIcon(UI.PixmapCache.getIcon("endline.png"))
+        self.wordboundButton.setIcon(UI.PixmapCache.getIcon("wordboundary.png"))
+        self.nonwordboundButton.setIcon(UI.PixmapCache.getIcon("nonwordboundary.png"))
+        self.poslookaheadButton.setIcon(UI.PixmapCache.getIcon("poslookahead.png"))
+        self.neglookaheadButton.setIcon(UI.PixmapCache.getIcon("neglookahead.png"))
+        self.poslookbehindButton.setIcon(UI.PixmapCache.getIcon("poslookbehind.png"))
+        self.neglookbehindButton.setIcon(UI.PixmapCache.getIcon("neglookbehind.png"))
+        self.undoButton.setIcon(UI.PixmapCache.getIcon("editUndo.png"))
+        self.redoButton.setIcon(UI.PixmapCache.getIcon("editRedo.png"))
+        
+        self.namedGroups = re.compile(r"""\(?P<([^>]+)>""").findall
+        
+        # start the PyQt5 server part
+        self.__pyqt5Available = False
+        self.__pyqt5Server = QProcess(self)
+        self.__pyqt5Server.start(sys.executable, [
+            os.path.join(os.path.dirname(__file__), "QRegularExpressionWizardServer.py")])
+        if self.__pyqt5Server.waitForStarted(5000):
+            self.__pyqt5Server.setReadChannel(QProcess.StandardOutput)
+            if self.__sendCommand("available"):
+                response = self.__receiveResponse()
+                if response and response["available"]:
+                    self.__pyqt5Available = True
+        
+        self.saveButton = \
+            self.buttonBox.addButton(self.trUtf8("Save"), QDialogButtonBox.ActionRole)
+        self.saveButton.setToolTip(self.trUtf8("Save the regular expression to a file"))
+        self.loadButton = \
+            self.buttonBox.addButton(self.trUtf8("Load"), QDialogButtonBox.ActionRole)
+        self.loadButton.setToolTip(self.trUtf8("Load a regular expression from a file"))
+        if qVersion() >= "5.0.0" and self.__pyqt5Available:
+            self.validateButton = self.buttonBox.addButton(
+                self.trUtf8("Validate"), QDialogButtonBox.ActionRole)
+            self.validateButton.setToolTip(self.trUtf8("Validate the regular expression"))
+            self.executeButton = self.buttonBox.addButton(
+                self.trUtf8("Execute"), QDialogButtonBox.ActionRole)
+            self.executeButton.setToolTip(self.trUtf8("Execute the regular expression"))
+            self.nextButton = self.buttonBox.addButton(
+                self.trUtf8("Next match"), QDialogButtonBox.ActionRole)
+            self.nextButton.setToolTip(
+                self.trUtf8("Show the next match of the regular expression"))
+            self.nextButton.setEnabled(False)
+        else:
+            self.validateButton = None
+            self.executeButton = None
+            self.nextButton = None
+        
+        if fromEric:
+            self.buttonBox.setStandardButtons(
+                QDialogButtonBox.Cancel | QDialogButtonBox.Ok)
+            self.copyButton = None
+        else:
+            self.copyButton = \
+                self.buttonBox.addButton(self.trUtf8("Copy"), QDialogButtonBox.ActionRole)
+            self.copyButton.setToolTip(
+                self.trUtf8("Copy the regular expression to the clipboard"))
+            self.buttonBox.setStandardButtons(QDialogButtonBox.Close)
+            self.variableLabel.hide()
+            self.variableLineEdit.hide()
+            self.variableLine.hide()
+            self.regexpTextEdit.setFocus()
+    
+    def __sendCommand(self, command, **kw):
+        """
+        Private method to send a command to the PyQt5 server.
+        
+        @param commandDict dictionary with command string and related data (dict)
+        @return flag indicating a successful transmission (boolean)
+        """
+        result = False
+        if command:
+            commandDict = {"command": command}
+            commandDict.update(kw)
+            commandStr = json.dumps(commandDict) + "\n"
+            data = QByteArray(commandStr.encode("utf-8"))
+            self.__pyqt5Server.write(data)
+            result = self.__pyqt5Server.waitForBytesWritten(10000)
+        return result
+    
+    def __receiveResponse(self):
+        """
+        Private method to receive a response from the PyQt5 server.
+        
+        @return response dictionary (dict)
+        """
+        responseDict = {}
+        if self.__pyqt5Server.waitForReadyRead(10000):
+            data = bytes(self.__pyqt5Server.readAllStandardOutput())
+            responseStr = data.decode("utf-8")
+            responseDict = json.loads(responseStr)
+            if responseDict["error"]:
+                E5MessageBox.critical(self,
+                    self.trUtf8("Communication Error"),
+                    self.trUtf8("""<p>The PyQt5 backend reported an error.</p>"""
+                                """<p>{0}</p>""").format(responseDict["error"]))
+                responseDict = {}
+        
+        return responseDict
+    
+    def shutdown(self):
+        """
+        Public method to shut down the PyQt5 server part.
+        """
+        self.__sendCommand("exit")
+        self.__pyqt5Server.waitForFinished(5000)
+    
+    def __insertString(self, s, steps=0):
+        """
+        Private method to insert a string into line edit and move cursor.
+        
+        @param s string to be inserted into the regexp line edit
+            (string)
+        @param steps number of characters to move the cursor (integer).
+            Negative steps moves cursor back, positives forward.
+        """
+        self.regexpTextEdit.insertPlainText(s)
+        tc = self.regexpTextEdit.textCursor()
+        if steps != 0:
+            if steps < 0:
+                act = QTextCursor.Left
+                steps = abs(steps)
+            else:
+                act = QTextCursor.Right
+            for i in range(steps):
+                tc.movePosition(act)
+        self.regexpTextEdit.setTextCursor(tc)
+    
+    @pyqtSlot()
+    def on_commentButton_clicked(self):
+        """
+        Private slot to handle the comment toolbutton.
+        """
+        self.__insertString("(?#)", -1)
+    
+    @pyqtSlot()
+    def on_charButton_clicked(self):
+        """
+        Private slot to handle the characters toolbutton.
+        """
+        from .QRegularExpressionWizardCharactersDialog import \
+            QRegularExpressionWizardCharactersDialog
+        dlg = QRegularExpressionWizardCharactersDialog(self)
+        if dlg.exec_() == QDialog.Accepted:
+            self.__insertString(dlg.getCharacters())
+    
+    @pyqtSlot()
+    def on_anycharButton_clicked(self):
+        """
+        Private slot to handle the any character toolbutton.
+        """
+        self.__insertString(".")
+    
+    @pyqtSlot()
+    def on_repeatButton_clicked(self):
+        """
+        Private slot to handle the repeat toolbutton.
+        """
+        from .QRegularExpressionWizardRepeatDialog import \
+            QRegularExpressionWizardRepeatDialog
+        dlg = QRegularExpressionWizardRepeatDialog(self)
+        if dlg.exec_() == QDialog.Accepted:
+            self.__insertString(dlg.getRepeat())
+    
+    @pyqtSlot()
+    def on_nonGroupButton_clicked(self):
+        """
+        Private slot to handle the non group toolbutton.
+        """
+        self.__insertString("(?:)", -1)
+    
+    @pyqtSlot()
+    def on_atomicGroupButton_clicked(self):
+        """
+        Private slot to handle the atomic non group toolbutton.
+        """
+        self.__insertString("(?>)", -1)
+    
+    @pyqtSlot()
+    def on_groupButton_clicked(self):
+        """
+        Private slot to handle the group toolbutton.
+        """
+        self.__insertString("()", -1)
+    
+    @pyqtSlot()
+    def on_namedGroupButton_clicked(self):
+        """
+        Private slot to handle the named group toolbutton.
+        """
+        self.__insertString("(?P<>)", -2)
+    
+    @pyqtSlot()
+    def on_namedReferenceButton_clicked(self):
+        """
+        Private slot to handle the named reference toolbutton.
+        """
+        # determine cursor position as length into text
+        length = self.regexpTextEdit.textCursor().position()
+        
+        # only present group names that occur before the current cursor position
+        regex = self.regexpTextEdit.toPlainText()[:length]
+        names = self.namedGroups(regex)
+        if not names:
+            E5MessageBox.information(self,
+                self.trUtf8("Named reference"),
+                self.trUtf8("""No named groups have been defined yet."""))
+            return
+        
+        groupName, ok = QInputDialog.getItem(
+            self,
+            self.trUtf8("Named reference"),
+            self.trUtf8("Select group name:"),
+            names,
+            0, True)
+        if ok and groupName:
+            self.__insertString("(?P={0})".format(groupName))
+    
+    @pyqtSlot()
+    def on_altnButton_clicked(self):
+        """
+        Private slot to handle the alternatives toolbutton.
+        """
+        self.__insertString("(|)", -2)
+    
+    @pyqtSlot()
+    def on_beglineButton_clicked(self):
+        """
+        Private slot to handle the begin line toolbutton.
+        """
+        self.__insertString("^")
+    
+    @pyqtSlot()
+    def on_endlineButton_clicked(self):
+        """
+        Private slot to handle the end line toolbutton.
+        """
+        self.__insertString("$")
+    
+    @pyqtSlot()
+    def on_wordboundButton_clicked(self):
+        """
+        Private slot to handle the word boundary toolbutton.
+        """
+        self.__insertString("\\b")
+    
+    @pyqtSlot()
+    def on_nonwordboundButton_clicked(self):
+        """
+        Private slot to handle the non word boundary toolbutton.
+        """
+        self.__insertString("\\B")
+    
+    @pyqtSlot()
+    def on_poslookaheadButton_clicked(self):
+        """
+        Private slot to handle the positive lookahead toolbutton.
+        """
+        self.__insertString("(?=)", -1)
+    
+    @pyqtSlot()
+    def on_neglookaheadButton_clicked(self):
+        """
+        Private slot to handle the negative lookahead toolbutton.
+        """
+        self.__insertString("(?!)", -1)
+    
+    @pyqtSlot()
+    def on_poslookbehindButton_clicked(self):
+        """
+        Private slot to handle the positive lookbehind toolbutton.
+        """
+        self.__insertString("(?<=)", -1)
+    
+    @pyqtSlot()
+    def on_neglookbehindButton_clicked(self):
+        """
+        Private slot to handle the negative lookbehind toolbutton.
+        """
+        self.__insertString("(?<!)", -1)
+    
+    @pyqtSlot()
+    def on_undoButton_clicked(self):
+        """
+        Private slot to handle the undo action.
+        """
+        self.regexpTextEdit.document().undo()
+    
+    @pyqtSlot()
+    def on_redoButton_clicked(self):
+        """
+        Private slot to handle the redo action.
+        """
+        self.regexpTextEdit.document().redo()
+    
+    def on_buttonBox_clicked(self, button):
+        """
+        Private slot called by a button of the button box clicked.
+        
+        @param button button that was clicked (QAbstractButton)
+        """
+        if button == self.validateButton:
+            self.on_validateButton_clicked()
+        elif button == self.executeButton:
+            self.on_executeButton_clicked()
+        elif button == self.saveButton:
+            self.on_saveButton_clicked()
+        elif button == self.loadButton:
+            self.on_loadButton_clicked()
+        elif button == self.nextButton:
+            self.on_nextButton_clicked()
+        elif self.copyButton and button == self.copyButton:
+            self.on_copyButton_clicked()
+    
+    @pyqtSlot()
+    def on_saveButton_clicked(self):
+        """
+        Private slot to save the QRegularExpression to a file.
+        """
+        fname, selectedFilter = E5FileDialog.getSaveFileNameAndFilter(
+            self,
+            self.trUtf8("Save regular expression"),
+            "",
+            self.trUtf8("RegExp Files (*.rx);;All Files (*)"),
+            None,
+            E5FileDialog.Options(E5FileDialog.DontConfirmOverwrite))
+        if fname:
+            ext = QFileInfo(fname).suffix()
+            if not ext:
+                ex = selectedFilter.split("(*")[1].split(")")[0]
+                if ex:
+                    fname += ex
+            if QFileInfo(fname).exists():
+                res = E5MessageBox.yesNo(self,
+                    self.trUtf8("Save regular expression"),
+                    self.trUtf8("<p>The file <b>{0}</b> already exists."
+                            " Overwrite it?</p>").format(fname),
+                    icon=E5MessageBox.Warning)
+                if not res:
+                    return
+            
+            try:
+                f = open(Utilities.toNativeSeparators(fname), "w", encoding="utf-8")
+                f.write(self.regexpTextEdit.toPlainText())
+                f.close()
+            except IOError as err:
+                E5MessageBox.information(self,
+                    self.trUtf8("Save regular expression"),
+                    self.trUtf8("""<p>The regular expression could not be saved.</p>"""
+                                """<p>Reason: {0}</p>""").format(str(err)))
+    
+    @pyqtSlot()
+    def on_loadButton_clicked(self):
+        """
+        Private slot to load a QRegularExpression from a file.
+        """
+        fname = E5FileDialog.getOpenFileName(
+            self,
+            self.trUtf8("Load regular expression"),
+            "",
+            self.trUtf8("RegExp Files (*.rx);;All Files (*)"))
+        if fname:
+            try:
+                f = open(Utilities.toNativeSeparators(fname), "r", encoding="utf-8")
+                regexp = f.read()
+                f.close()
+                self.regexpTextEdit.setPlainText(regexp)
+            except IOError as err:
+                E5MessageBox.information(self,
+                    self.trUtf8("Save regular expression"),
+                    self.trUtf8("""<p>The regular expression could not be saved.</p>"""
+                                """<p>Reason: {0}</p>""").format(str(err)))
+
+    @pyqtSlot()
+    def on_copyButton_clicked(self):
+        """
+        Private slot to copy the QRegularExpression string into the clipboard.
+        
+        This slot is only available, if not called from within eric5.
+        """
+        escaped = self.regexpTextEdit.toPlainText()
+        if escaped:
+            escaped = escaped.replace("\\", "\\\\")
+            cb = QApplication.clipboard()
+            cb.setText(escaped, QClipboard.Clipboard)
+            if cb.supportsSelection():
+                cb.setText(escaped, QClipboard.Selection)
+
+    @pyqtSlot()
+    def on_validateButton_clicked(self):
+        """
+        Private slot to validate the entered QRegularExpression.
+        """
+        if qVersion() < "5.0.0" or not self.__pyqt5Available:
+            # only available for Qt5
+            return
+        
+        regexp = self.regexpTextEdit.toPlainText()
+        if regexp:
+            options = []
+            if self.caseInsensitiveCheckBox.isChecked():
+                options.append("CaseInsensitiveOption")
+            if self.multilineCheckBox.isChecked():
+                options.append("MultilineOption")
+            if self.dotallCheckBox.isChecked():
+                options.append("DotMatchesEverythingOption")
+            if self.extendedCheckBox.isChecked():
+                options.append("ExtendedPatternSyntaxOption")
+            if self.greedinessCheckBox.isChecked():
+                options.append("InvertedGreedinessOption")
+            if self.unicodeCheckBox.isChecked():
+                options.append("UseUnicodePropertiesOption")
+            if self.captureCheckBox.isChecked():
+                options.append("DontCaptureOption")
+            
+            if self.__sendCommand("validate", options=options, regexp=regexp):
+                response = self.__receiveResponse()
+                if response and "valid" in response:
+                    if response["valid"]:
+                        E5MessageBox.information(self,
+                            self.trUtf8("Validation"),
+                            self.trUtf8("""The regular expression is valid."""))
+                    else:
+                        E5MessageBox.critical(self,
+                            self.trUtf8("Error"),
+                            self.trUtf8("""Invalid regular expression: {0}""")
+                                .format(response["errorMessage"]))
+                        # move cursor to error offset
+                        offset = response["errorOffset"]
+                        tc = self.regexpTextEdit.textCursor()
+                        tc.setPosition(offset)
+                        self.regexpTextEdit.setTextCursor(tc)
+                        self.regexpTextEdit.setFocus()
+                        return
+                else:
+                    E5MessageBox.critical(self,
+                        self.trUtf8("Communication Error"),
+                        self.trUtf8("""Invalid response received from PyQt5 backend."""))
+            else:
+                E5MessageBox.critical(self,
+                    self.trUtf8("Communication Error"),
+                    self.trUtf8("""Communication with PyQt5 backend failed."""))
+        else:
+            E5MessageBox.critical(self,
+                self.trUtf8("Error"),
+                self.trUtf8("""A regular expression must be given."""))
+
+    @pyqtSlot()
+    def on_executeButton_clicked(self, startpos=0):
+        """
+        Private slot to execute the entered QRegularExpression on the test text.
+        
+        This slot will execute the entered QRegularExpression on the entered test
+        data and will display the result in the table part of the dialog.
+        
+        @param startpos starting position for the QRegularExpression matching
+        """
+        if qVersion() < "5.0.0" or not self.__pyqt5Available:
+            # only available for Qt5
+            return
+        
+        regexp = self.regexpTextEdit.toPlainText()
+        text = self.textTextEdit.toPlainText()
+        if regexp and text:
+            options = []
+            if self.caseInsensitiveCheckBox.isChecked():
+                options.append("CaseInsensitiveOption")
+            if self.multilineCheckBox.isChecked():
+                options.append("MultilineOption")
+            if self.dotallCheckBox.isChecked():
+                options.append("DotMatchesEverythingOption")
+            if self.extendedCheckBox.isChecked():
+                options.append("ExtendedPatternSyntaxOption")
+            if self.greedinessCheckBox.isChecked():
+                options.append("InvertedGreedinessOption")
+            if self.unicodeCheckBox.isChecked():
+                options.append("UseUnicodePropertiesOption")
+            if self.captureCheckBox.isChecked():
+                options.append("DontCaptureOption")
+            
+            if self.__sendCommand("execute", options=options, regexp=regexp,
+                                  text=text, startpos=startpos):
+                response = self.__receiveResponse()
+                if response and ("valid" in response or "matched" in response):
+                    if "valid" in response:
+                        E5MessageBox.critical(self,
+                            self.trUtf8("Error"),
+                            self.trUtf8("""Invalid regular expression: {0}""")
+                                .format(response["errorMessage"]))
+                        # move cursor to error offset
+                        offset = response["errorOffset"]
+                        tc = self.regexpTextEdit.textCursor()
+                        tc.setPosition(offset)
+                        self.regexpTextEdit.setTextCursor(tc)
+                        self.regexpTextEdit.setFocus()
+                        return
+                    else:
+                        row = 0
+                        OFFSET = 5
+                        
+                        self.resultTable.setColumnCount(0)
+                        self.resultTable.setColumnCount(3)
+                        self.resultTable.setRowCount(0)
+                        self.resultTable.setRowCount(OFFSET)
+                        self.resultTable.setItem(
+                            row, 0, QTableWidgetItem(self.trUtf8("Regexp")))
+                        self.resultTable.setItem(
+                            row, 1, QTableWidgetItem(regexp))
+                        if response["matched"]:
+                            captures = response["captures"]
+                            # index 0 is the complete match
+                            offset = captures[0][1]
+                            self.lastMatchEnd = captures[0][2]
+                            self.nextButton.setEnabled(True)
+                            row += 1
+                            self.resultTable.setItem(row, 0,
+                                QTableWidgetItem(self.trUtf8("Offset")))
+                            self.resultTable.setItem(row, 1,
+                                QTableWidgetItem("{0:d}".format(offset)))
+                            
+                            row += 1
+                            self.resultTable.setItem(row, 0,
+                                QTableWidgetItem(self.trUtf8("Captures")))
+                            self.resultTable.setItem(row, 1,
+                                QTableWidgetItem("{0:d}".format(len(captures) - 1)))
+                            row += 1
+                            self.resultTable.setItem(row, 1,
+                                QTableWidgetItem(self.trUtf8("Text")))
+                            self.resultTable.setItem(row, 2,
+                                QTableWidgetItem(self.trUtf8("Characters")))
+                            
+                            row += 1
+                            self.resultTable.setItem(row, 0,
+                                QTableWidgetItem(self.trUtf8("Match")))
+                            self.resultTable.setItem(row, 1,
+                                QTableWidgetItem(captures[0][0]))
+                            self.resultTable.setItem(row, 2,
+                                QTableWidgetItem("{0:d}".format(captures[0][3])))
+                            
+                            for i in range(1, len(captures)):
+                                if captures[i][0]:
+                                    row += 1
+                                    self.resultTable.insertRow(row)
+                                    self.resultTable.setItem(row, 0,
+                                        QTableWidgetItem(
+                                            self.trUtf8("Capture #{0}").format(i)))
+                                    self.resultTable.setItem(row, 1,
+                                        QTableWidgetItem(captures[i][0]))
+                                    self.resultTable.setItem(row, 2,
+                                        QTableWidgetItem("{0:d}".format(captures[i][3])))
+                            
+                            # highlight the matched text
+                            tc = self.textTextEdit.textCursor()
+                            tc.setPosition(offset)
+                            tc.setPosition(self.lastMatchEnd, QTextCursor.KeepAnchor)
+                            self.textTextEdit.setTextCursor(tc)
+                        else:
+                            self.nextButton.setEnabled(False)
+                            self.resultTable.setRowCount(2)
+                            row += 1
+                            if startpos > 0:
+                                self.resultTable.setItem(row, 0,
+                                    QTableWidgetItem(self.trUtf8("No more matches")))
+                            else:
+                                self.resultTable.setItem(row, 0,
+                                    QTableWidgetItem(self.trUtf8("No matches")))
+                            
+                            # remove the highlight
+                            tc = self.textTextEdit.textCursor()
+                            tc.setPosition(0)
+                            self.textTextEdit.setTextCursor(tc)
+                        
+                        self.resultTable.resizeColumnsToContents()
+                        self.resultTable.resizeRowsToContents()
+                        self.resultTable.verticalHeader().hide()
+                        self.resultTable.horizontalHeader().hide()
+                else:
+                    E5MessageBox.critical(self,
+                        self.trUtf8("Communication Error"),
+                        self.trUtf8("""Invalid response received from PyQt5 backend."""))
+            else:
+                E5MessageBox.critical(self,
+                    self.trUtf8("Communication Error"),
+                    self.trUtf8("""Communication with PyQt5 backend failed."""))
+        else:
+            E5MessageBox.critical(self,
+                self.trUtf8("Error"),
+                self.trUtf8("""A regular expression and a text must be given."""))
+    
+    @pyqtSlot()
+    def on_nextButton_clicked(self):
+        """
+        Private slot to find the next match.
+        """
+        self.on_executeButton_clicked(self.lastMatchEnd)
+    
+    @pyqtSlot()
+    def on_regexpTextEdit_textChanged(self):
+        """
+        Private slot called when the regexp changes.
+        """
+        if self.nextButton:
+            self.nextButton.setEnabled(False)
+    
+    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)
+        """
+        # calculate the indentation string
+        i1string = (indLevel + 1) * indString
+        estring = os.linesep + indLevel * indString
+        
+        # now generate the code
+        reVar = self.variableLineEdit.text()
+        if not reVar:
+            reVar = "regexp"
+        
+        regexp = self.regexpTextEdit.toPlainText()
+        
+        options = []
+        if self.caseInsensitiveCheckBox.isChecked():
+            options.append("QRegularExpression.CaseInsensitiveOption")
+        if self.multilineCheckBox.isChecked():
+            options.append("QRegularExpression.MultilineOption")
+        if self.dotallCheckBox.isChecked():
+            options.append("QRegularExpression.DotMatchesEverythingOption")
+        if self.extendedCheckBox.isChecked():
+            options.append("QRegularExpression.ExtendedPatternSyntaxOption")
+        if self.greedinessCheckBox.isChecked():
+            options.append("QRegularExpression.InvertedGreedinessOption")
+        if self.unicodeCheckBox.isChecked():
+            options.append("QRegularExpression.UseUnicodePropertiesOption")
+        if self.captureCheckBox.isChecked():
+            options.append("QRegularExpression.DontCaptureOption")
+        options = " | \\{0}{1}".format(os.linesep, i1string).join(options)
+        
+        code = '{0} = QRegularExpression(r"""{1}"""'.format(
+            reVar, regexp.replace('"', '\\"'))
+        if options:
+            code += ', {0}{1}{2}'.format(os.linesep, i1string, options)
+        code += '){0}'.format(estring)
+        return code
+
+
+class QRegularExpressionWizardDialog(QDialog):
+    """
+    Class for the dialog variant.
+    """
+    def __init__(self, parent=None, fromEric=True):
+        """
+        Constructor
+        
+        @param parent parent widget (QWidget)
+        @param fromEric flag indicating a call from within eric5
+        """
+        super(QRegularExpressionWizardDialog, self).__init__(parent)
+        self.setModal(fromEric)
+        self.setSizeGripEnabled(True)
+        
+        self.__layout = QVBoxLayout(self)
+        self.__layout.setMargin(0)
+        self.setLayout(self.__layout)
+        
+        self.cw = QRegularExpressionWizardWidget(self, fromEric)
+        size = self.cw.size()
+        self.__layout.addWidget(self.cw)
+        self.resize(size)
+        self.setWindowTitle(self.cw.windowTitle())
+        
+        self.cw.buttonBox.accepted[()].connect(self.accept)
+        self.cw.buttonBox.rejected[()].connect(self.reject)
+    
+    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)
+        """
+        return self.cw.getCode(indLevel, indString)
+    
+    def accept(self):
+        """
+        Public slot to hide the dialog and set the result code to Accepted.
+        """
+        self.cw.shutdown()
+        super(QRegularExpressionWizardDialog, self).accept()
+    
+    def reject(self):
+        """
+        Public slot to hide the dialog and set the result code to Rejected.
+        """
+        self.cw.shutdown()
+        super(QRegularExpressionWizardDialog, self).reject()
+
+
+class QRegularExpressionWizardWindow(E5MainWindow):
+    """
+    Main window class for the standalone dialog.
+    """
+    def __init__(self, parent=None):
+        """
+        Constructor
+        
+        @param parent reference to the parent widget (QWidget)
+        """
+        super(QRegularExpressionWizardWindow, self).__init__(parent)
+        self.cw = QRegularExpressionWizardWidget(self, fromEric=False)
+        size = self.cw.size()
+        self.setCentralWidget(self.cw)
+        self.resize(size)
+        self.setWindowTitle(self.cw.windowTitle())
+        
+        self.setStyle(Preferences.getUI("Style"), Preferences.getUI("StyleSheet"))
+        
+        self.cw.buttonBox.accepted[()].connect(self.close)
+        self.cw.buttonBox.rejected[()].connect(self.close)
+    
+    def closeEvent(self, evt):
+        """
+        Protected method handling the close event.
+        
+        @param evt close event (QCloseEvent)
+        """
+        self.cw.shutdown()
+        super(QRegularExpressionWizardWindow, self).closeEvent(evt)

eric ide

mercurial