--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Plugins/VcsPlugins/vcsGit/GitDialog.py Sun Dec 10 17:42:11 2017 +0100 @@ -0,0 +1,311 @@ +# -*- coding: utf-8 -*- + +# Copyright (c) 2014 - 2017 Detlev Offenbach <detlev@die-offenbachs.de> +# + +""" +Module implementing a dialog starting a process and showing its output. +""" + +from __future__ import unicode_literals +try: + str = unicode +except NameError: + pass + +import os + +from PyQt5.QtCore import QProcess, QTimer, pyqtSlot, Qt, QCoreApplication, \ + QProcessEnvironment +from PyQt5.QtWidgets import QDialog, QDialogButtonBox, QLineEdit + +from E5Gui import E5MessageBox + +from .Ui_GitDialog import Ui_GitDialog + +from .GitUtilities import strToQByteArray + +import Preferences + + +class GitDialog(QDialog, Ui_GitDialog): + """ + Class implementing a dialog starting a process and showing its output. + + It starts a QProcess and displays a dialog that + shows the output of the process. The dialog is modal, + which causes a synchronized execution of the process. + """ + def __init__(self, text, git=None, parent=None): + """ + Constructor + + @param text text to be shown by the label (string) + @param git reference to the Git interface object (Git) + @param parent parent widget (QWidget) + """ + super(GitDialog, self).__init__(parent) + self.setupUi(self) + + self.buttonBox.button(QDialogButtonBox.Close).setEnabled(False) + self.buttonBox.button(QDialogButtonBox.Cancel).setDefault(True) + + self.process = None + self.username = '' + self.password = '' + self.vcs = git + + self.outputGroup.setTitle(text) + + self.show() + QCoreApplication.processEvents() + + def __finish(self): + """ + Private slot called when the process finished or the user pressed + the button. + """ + if self.process is not None and \ + self.process.state() != QProcess.NotRunning: + self.process.terminate() + QTimer.singleShot(2000, self.process.kill) + self.process.waitForFinished(3000) + + self.inputGroup.setEnabled(False) + self.inputGroup.hide() + + self.process = None + + self.buttonBox.button(QDialogButtonBox.Close).setEnabled(True) + self.buttonBox.button(QDialogButtonBox.Cancel).setEnabled(False) + self.buttonBox.button(QDialogButtonBox.Close).setDefault(True) + self.buttonBox.button(QDialogButtonBox.Close).setFocus( + Qt.OtherFocusReason) + + if self.normal and self.errors.toPlainText(): + self.errorGroup.setTitle(self.tr("Additional Output")) + + if Preferences.getVCS("AutoClose") and \ + self.normal and \ + self.errors.toPlainText() == "": + self.accept() + + 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.buttonBox.button(QDialogButtonBox.Close): + self.close() + elif button == self.buttonBox.button(QDialogButtonBox.Cancel): + self.statusLabel.setText(self.tr("Process canceled.")) + self.__finish() + + def __procFinished(self, exitCode, exitStatus): + """ + Private slot connected to the finished signal. + + @param exitCode exit code of the process (integer) + @param exitStatus exit status of the process (QProcess.ExitStatus) + """ + self.normal = (exitStatus == QProcess.NormalExit) and (exitCode == 0) + if self.normal: + self.statusLabel.setText(self.tr("Process finished successfully.")) + elif exitStatus == QProcess.CrashExit: + self.statusLabel.setText(self.tr("Process crashed.")) + else: + self.statusLabel.setText( + self.tr("Proces finished with exit code {0}").format(exitCode)) + self.__finish() + + def startProcess(self, args, workingDir=None, showArgs=True, + environment=None): + """ + Public slot used to start the process. + + @param args list of arguments for the process (list of strings) + @keyparam workingDir working directory for the process (string) + @keyparam showArgs flag indicating to show the arguments (boolean) + @keyparam environment dictionary of environment settings to add + or change for the git process (dict of string and string) + @return flag indicating a successful start of the process (boolean) + """ + self.errorGroup.hide() + self.normal = False + self.intercept = False + + if environment is None: + environment = {} + + self.__hasAddOrDelete = False + if args[0] in ["checkout", "fetch", "pull", "rebase", "reset", + "merge", "cherry-pick", "stash"]: + self.__updateCommand = True + else: + self.__updateCommand = False + + if showArgs: + self.resultbox.append(' '.join(args)) + self.resultbox.append('') + + self.process = QProcess() + if environment: + env = QProcessEnvironment.systemEnvironment() + for key, value in environment.items(): + env.insert(key, value) + self.process.setProcessEnvironment(env) + + self.process.finished.connect(self.__procFinished) + self.process.readyReadStandardOutput.connect(self.__readStdout) + self.process.readyReadStandardError.connect(self.__readStderr) + + if workingDir: + self.process.setWorkingDirectory(workingDir) + self.process.start('git', args) + procStarted = self.process.waitForStarted(5000) + if not procStarted: + self.buttonBox.setFocus() + self.inputGroup.setEnabled(False) + E5MessageBox.critical( + self, + self.tr('Process Generation Error'), + self.tr( + 'The process {0} could not be started. ' + 'Ensure, that it is in the search path.' + ).format('git')) + else: + self.inputGroup.setEnabled(True) + self.inputGroup.show() + return procStarted + + def normalExit(self): + """ + Public method to check for a normal process termination. + + @return flag indicating normal process termination (boolean) + """ + return self.normal + + def normalExitWithoutErrors(self): + """ + Public method to check for a normal process termination without + error messages. + + @return flag indicating normal process termination (boolean) + """ + return self.normal and self.errors.toPlainText() == "" + + def __readStdout(self): + """ + Private slot to handle the readyReadStandardOutput signal. + + It reads the output of the process, formats it and inserts it into + the contents pane. + """ + if self.process is not None: + s = str(self.process.readAllStandardOutput(), + Preferences.getSystem("IOEncoding"), + 'replace') + self.__showOutput(s) + + def __showOutput(self, out): + """ + Private slot to show some output. + + @param out output to be shown (string) + """ + self.resultbox.insertPlainText(out) + self.resultbox.ensureCursorVisible() + + # check for a changed project file + if self.__updateCommand: + for line in out.splitlines(): + if '.e4p' in line or '.e6p' in line: + self.__hasAddOrDelete = True + break + + QCoreApplication.processEvents() + + def __readStderr(self): + """ + Private slot to handle the readyReadStandardError signal. + + It reads the error output of the process and inserts it into the + error pane. + """ + if self.process is not None: + s = str(self.process.readAllStandardError(), + Preferences.getSystem("IOEncoding"), + 'replace') + self.__showError(s) + + def __showError(self, out): + """ + Private slot to show some error. + + @param out error to be shown (string) + """ + self.errorGroup.show() + self.errors.insertPlainText(out) + self.errors.ensureCursorVisible() + + QCoreApplication.processEvents() + + def on_passwordCheckBox_toggled(self, isOn): + """ + Private slot to handle the password checkbox toggled. + + @param isOn flag indicating the status of the check box (boolean) + """ + if isOn: + self.input.setEchoMode(QLineEdit.Password) + else: + self.input.setEchoMode(QLineEdit.Normal) + + @pyqtSlot() + def on_sendButton_clicked(self): + """ + Private slot to send the input to the git process. + """ + inputTxt = self.input.text() + inputTxt += os.linesep + + if self.passwordCheckBox.isChecked(): + self.errors.insertPlainText(os.linesep) + self.errors.ensureCursorVisible() + else: + self.errors.insertPlainText(inputTxt) + self.errors.ensureCursorVisible() + + self.process.write(strToQByteArray(inputTxt)) + + self.passwordCheckBox.setChecked(False) + self.input.clear() + + def on_input_returnPressed(self): + """ + Private slot to handle the press of the return key in the input field. + """ + self.intercept = True + self.on_sendButton_clicked() + + def keyPressEvent(self, evt): + """ + Protected slot to handle a key press event. + + @param evt the key press event (QKeyEvent) + """ + if self.intercept: + self.intercept = False + evt.accept() + return + super(GitDialog, self).keyPressEvent(evt) + + def hasAddOrDelete(self): + """ + Public method to check, if the last action contained an add or delete. + + @return flag indicating the presence of an add or delete (boolean) + """ + return self.__hasAddOrDelete