eric6/Plugins/DocumentationPlugins/Ericapi/EricapiExecDialog.py

Sat, 27 Feb 2021 12:08:23 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sat, 27 Feb 2021 12:08:23 +0100
changeset 8138
169e65a6787c
parent 7923
91e843545d9a
child 8143
2c730d5fd177
permissions
-rw-r--r--

Shell: added functionality to show a prompt when the main client process has exited (e.g. a script ended).

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2003 - 2021 Detlev Offenbach <detlev@die-offenbachs.de>
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4 #
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5
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6 """
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7 Module implementing a dialog to show the output of the ericapi process.
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8 """
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9
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10 import os.path
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11
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12 from PyQt5.QtCore import QProcess, QTimer
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13 from PyQt5.QtWidgets import QDialog, QDialogButtonBox
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14
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15 from E5Gui import E5MessageBox
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16
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17 from .Ui_EricapiExecDialog import Ui_EricapiExecDialog
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18
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19 import Preferences
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20
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21
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22 class EricapiExecDialog(QDialog, Ui_EricapiExecDialog):
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23 """
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24 Class implementing a dialog to show the output of the ericapi process.
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25
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26 This class starts a QProcess and displays a dialog that
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27 shows the output of the documentation command process.
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28 """
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29 def __init__(self, cmdname, parent=None):
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30 """
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31 Constructor
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32
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33 @param cmdname name of the ericapi generator (string)
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34 @param parent parent widget of this dialog (QWidget)
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35 """
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36 super(EricapiExecDialog, self).__init__(parent)
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37 self.setModal(True)
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38 self.setupUi(self)
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39
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40 self.buttonBox.button(QDialogButtonBox.Close).setEnabled(False)
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41 self.buttonBox.button(QDialogButtonBox.Cancel).setDefault(True)
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42
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43 self.process = None
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44 self.cmdname = cmdname
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45
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46 def start(self, args, fn):
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47 """
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48 Public slot to start the ericapi command.
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49
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50 @param args commandline arguments for ericapi program (list of strings)
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51 @param fn filename or dirname to be processed by ericapi program
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52 (string)
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53 @return flag indicating the successful start of the process (boolean)
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54 """
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55 self.errorGroup.hide()
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56
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57 self.filename = fn
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58 if os.path.isdir(self.filename):
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59 dname = os.path.abspath(self.filename)
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60 fname = "."
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61 if os.path.exists(os.path.join(dname, "__init__.py")):
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62 fname = os.path.basename(dname)
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63 dname = os.path.dirname(dname)
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64 else:
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65 dname = os.path.dirname(self.filename)
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66 fname = os.path.basename(self.filename)
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67
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68 self.contents.clear()
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69 self.errors.clear()
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70
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71 program = args[0]
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72 del args[0]
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73 args.append(fname)
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74
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75 self.process = QProcess()
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76 self.process.setWorkingDirectory(dname)
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77
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78 self.process.readyReadStandardOutput.connect(self.__readStdout)
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79 self.process.readyReadStandardError.connect(self.__readStderr)
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80 self.process.finished.connect(self.__finish)
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81
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82 self.setWindowTitle(
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83 self.tr('{0} - {1}').format(self.cmdname, self.filename))
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84 self.process.start(program, args)
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85 procStarted = self.process.waitForStarted(5000)
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86 if not procStarted:
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87 E5MessageBox.critical(
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88 self,
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89 self.tr('Process Generation Error'),
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90 self.tr(
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91 'The process {0} could not be started. '
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92 'Ensure, that it is in the search path.'
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93 ).format(program))
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94 return procStarted
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95
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96 def on_buttonBox_clicked(self, button):
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97 """
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98 Private slot called by a button of the button box clicked.
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99
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100 @param button button that was clicked (QAbstractButton)
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101 """
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102 if button == self.buttonBox.button(QDialogButtonBox.Close):
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103 self.accept()
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104 elif button == self.buttonBox.button(QDialogButtonBox.Cancel):
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105 self.__finish()
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106
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107 def __finish(self):
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108 """
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109 Private slot called when the process finished.
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110
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111 It is called when the process finished or
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112 the user pressed the button.
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113 """
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114 if (
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115 self.process is not None and
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116 self.process.state() != QProcess.NotRunning
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117 ):
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118 self.process.terminate()
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119 QTimer.singleShot(2000, self.process.kill)
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120 self.process.waitForFinished(3000)
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121
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122 self.buttonBox.button(QDialogButtonBox.Close).setEnabled(True)
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123 self.buttonBox.button(QDialogButtonBox.Cancel).setEnabled(False)
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124 self.buttonBox.button(QDialogButtonBox.Close).setDefault(True)
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125
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126 self.process = None
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127
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128 self.contents.insertPlainText(
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129 self.tr('\n{0} finished.\n').format(self.cmdname))
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130 self.contents.ensureCursorVisible()
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131
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132 def __readStdout(self):
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133 """
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134 Private slot to handle the readyReadStandardOutput signal.
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135
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136 It reads the output of the process, formats it and inserts it into
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137 the contents pane.
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138 """
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139 self.process.setReadChannel(QProcess.StandardOutput)
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140
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141 while self.process.canReadLine():
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142 s = str(self.process.readLine(),
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143 Preferences.getSystem("IOEncoding"),
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144 'replace')
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145 self.contents.insertPlainText(s)
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146 self.contents.ensureCursorVisible()
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147
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148 def __readStderr(self):
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149 """
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150 Private slot to handle the readyReadStandardError signal.
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151
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152 It reads the error output of the process and inserts it into the
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153 error pane.
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154 """
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155 self.process.setReadChannel(QProcess.StandardError)
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156
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157 while self.process.canReadLine():
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158 self.errorGroup.show()
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159 s = str(self.process.readLine(),
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160 Preferences.getSystem("IOEncoding"),
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161 'replace')
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162 self.errors.insertPlainText(s)
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163 self.errors.ensureCursorVisible()

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