Mercurial Repositories > eric / file comparison
comparison: CondaInterface/CondaExportDialog.py
CondaInterface/CondaExportDialog.py
- branch
- maintenance
- changeset 6826
- c6dda2cbe081
- parent 6728
- ba077788a882
equal
deleted
inserted
replaced
| 6764:d14ddbfbbd36 | 6826:c6dda2cbe081 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2019 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing a dialog to generate a requirements file for conda. | |
| 8 """ | |
| 9 | |
| 10 from __future__ import unicode_literals | |
| 11 try: | |
| 12 str = unicode # __IGNORE_EXCEPTION__ | |
| 13 except NameError: | |
| 14 pass | |
| 15 | |
| 16 import os | |
| 17 | |
| 18 from PyQt5.QtCore import pyqtSlot, Qt | |
| 19 from PyQt5.QtWidgets import QDialog, QDialogButtonBox, QAbstractButton, \ | |
| 20 QApplication | |
| 21 | |
| 22 from E5Gui import E5MessageBox, E5FileDialog | |
| 23 from E5Gui.E5PathPicker import E5PathPickerModes | |
| 24 from E5Gui.E5Application import e5App | |
| 25 | |
| 26 from .Ui_CondaExportDialog import Ui_CondaExportDialog | |
| 27 | |
| 28 | |
| 29 class CondaExportDialog(QDialog, Ui_CondaExportDialog): | |
| 30 """ | |
| 31 Class implementing a dialog to generate a requirements file for conda. | |
| 32 """ | |
| 33 def __init__(self, conda, envName, envPrefix, parent=None): | |
| 34 """ | |
| 35 Constructor | |
| 36 | |
| 37 @param conda reference to the master object | |
| 38 @type Conda | |
| 39 @param envName name of the environment to create the requirements | |
| 40 file from | |
| 41 @type str | |
| 42 @param envPrefix prefix of the environment to create the requirements | |
| 43 file from | |
| 44 @type str | |
| 45 @param parent reference to the parent widget | |
| 46 @type QWidget | |
| 47 """ | |
| 48 super(CondaExportDialog, self).__init__(parent) | |
| 49 self.setupUi(self) | |
| 50 self.setWindowFlags(Qt.Window) | |
| 51 | |
| 52 self.__refreshButton = self.buttonBox.addButton( | |
| 53 self.tr("&Refresh"), QDialogButtonBox.ActionRole) | |
| 54 | |
| 55 self.requirementsFilePicker.setMode(E5PathPickerModes.SaveFileMode) | |
| 56 self.requirementsFilePicker.setFilters( | |
| 57 self.tr("Text Files (*.txt);;All Files (*)")) | |
| 58 | |
| 59 self.__conda = conda | |
| 60 self.__prefix = envPrefix | |
| 61 | |
| 62 self.environmentLabel.setText("<b>{0}</b>".format(envName)) | |
| 63 | |
| 64 self.__requirementsEdited = False | |
| 65 self.__requirementsAvailable = False | |
| 66 | |
| 67 self.__updateButtons() | |
| 68 | |
| 69 def closeEvent(self, e): | |
| 70 """ | |
| 71 Protected slot implementing a close event handler. | |
| 72 | |
| 73 @param e close event | |
| 74 @type QCloseEvent | |
| 75 """ | |
| 76 QApplication.restoreOverrideCursor() | |
| 77 e.accept() | |
| 78 | |
| 79 @pyqtSlot(str) | |
| 80 def on_requirementsFilePicker_textChanged(self, txt): | |
| 81 """ | |
| 82 Private slot handling a change of the requirements file name. | |
| 83 | |
| 84 @param txt name of the requirements file | |
| 85 @type str | |
| 86 """ | |
| 87 self.__updateButtons() | |
| 88 | |
| 89 @pyqtSlot() | |
| 90 def on_requirementsEdit_textChanged(self): | |
| 91 """ | |
| 92 Private slot handling changes of the requirements text. | |
| 93 """ | |
| 94 self.__requirementsEdited = True | |
| 95 | |
| 96 @pyqtSlot(QAbstractButton) | |
| 97 def on_buttonBox_clicked(self, button): | |
| 98 """ | |
| 99 Private slot called by a button of the button box clicked. | |
| 100 | |
| 101 @param button button that was clicked | |
| 102 @type QAbstractButton | |
| 103 """ | |
| 104 if button == self.buttonBox.button(QDialogButtonBox.Close): | |
| 105 self.close() | |
| 106 elif button == self.__refreshButton: | |
| 107 self.__refresh() | |
| 108 | |
| 109 def __refresh(self): | |
| 110 """ | |
| 111 Private slot to refresh the displayed list. | |
| 112 """ | |
| 113 if self.__requirementsEdited: | |
| 114 ok = E5MessageBox.yesNo( | |
| 115 self, | |
| 116 self.tr("Generate Requirements"), | |
| 117 self.tr("""The requirements were changed. Do you want""" | |
| 118 """ to overwrite these changes?""")) | |
| 119 else: | |
| 120 ok = True | |
| 121 if ok: | |
| 122 self.start() | |
| 123 | |
| 124 def start(self): | |
| 125 """ | |
| 126 Public method to start the command. | |
| 127 """ | |
| 128 self.requirementsEdit.clear() | |
| 129 self.__requirementsAvailable = False | |
| 130 | |
| 131 args = [ | |
| 132 "list", | |
| 133 "--export", | |
| 134 "--prefix", | |
| 135 self.__prefix, | |
| 136 ] | |
| 137 | |
| 138 QApplication.setOverrideCursor(Qt.WaitCursor) | |
| 139 success, output = self.__conda.runProcess(args) | |
| 140 | |
| 141 if success: | |
| 142 self.requirementsEdit.setPlainText(output) | |
| 143 self.__requirementsAvailable = True | |
| 144 else: | |
| 145 self.requirementsEdit.setPlainText( | |
| 146 self.tr("No output generated by conda.")) | |
| 147 | |
| 148 QApplication.restoreOverrideCursor() | |
| 149 self.__updateButtons() | |
| 150 | |
| 151 self.__requirementsEdited = False | |
| 152 | |
| 153 def __updateButtons(self): | |
| 154 """ | |
| 155 Private method to set the state of the various buttons. | |
| 156 """ | |
| 157 self.saveButton.setEnabled( | |
| 158 self.__requirementsAvailable and | |
| 159 bool(self.requirementsFilePicker.text()) | |
| 160 ) | |
| 161 self.saveToButton.setEnabled(self.__requirementsAvailable) | |
| 162 self.copyButton.setEnabled(self.__requirementsAvailable) | |
| 163 | |
| 164 aw = e5App().getObject("ViewManager").activeWindow() | |
| 165 if aw and self.__requirementsAvailable: | |
| 166 self.insertButton.setEnabled(True) | |
| 167 self.replaceAllButton.setEnabled(True) | |
| 168 self.replaceSelectionButton.setEnabled( | |
| 169 aw.hasSelectedText()) | |
| 170 else: | |
| 171 self.insertButton.setEnabled(False) | |
| 172 self.replaceAllButton.setEnabled(False) | |
| 173 self.replaceSelectionButton.setEnabled(False) | |
| 174 | |
| 175 def __writeToFile(self, fileName): | |
| 176 """ | |
| 177 Private method to write the requirements text to a file. | |
| 178 | |
| 179 @param fileName name of the file to write to | |
| 180 @type str | |
| 181 """ | |
| 182 if os.path.exists(fileName): | |
| 183 ok = E5MessageBox.warning( | |
| 184 self, | |
| 185 self.tr("Generate Requirements"), | |
| 186 self.tr("""The file <b>{0}</b> already exists. Do you want""" | |
| 187 """ to overwrite it?""").format(fileName)) | |
| 188 if not ok: | |
| 189 return | |
| 190 | |
| 191 try: | |
| 192 f = open(fileName, "w") | |
| 193 f.write(self.requirementsEdit.toPlainText()) | |
| 194 f.close() | |
| 195 except (OSError, IOError) as err: | |
| 196 E5MessageBox.critical( | |
| 197 self, | |
| 198 self.tr("Generate Requirements"), | |
| 199 self.tr("""<p>The requirements could not be written""" | |
| 200 """ to <b>{0}</b>.</p><p>Reason: {1}</p>""") | |
| 201 .format(fileName, str(err))) | |
| 202 | |
| 203 @pyqtSlot() | |
| 204 def on_saveButton_clicked(self): | |
| 205 """ | |
| 206 Private slot to save the requirements text to the requirements file. | |
| 207 """ | |
| 208 fileName = self.requirementsFilePicker.text() | |
| 209 self.__writeToFile(fileName) | |
| 210 | |
| 211 @pyqtSlot() | |
| 212 def on_saveToButton_clicked(self): | |
| 213 """ | |
| 214 Private slot to write the requirements text to a new file. | |
| 215 """ | |
| 216 fileName, selectedFilter = E5FileDialog.getSaveFileNameAndFilter( | |
| 217 self, | |
| 218 self.tr("Generate Requirements"), | |
| 219 os.path.expanduser("~"), | |
| 220 self.tr("Text Files (*.txt);;All Files (*)"), | |
| 221 None, | |
| 222 E5FileDialog.Options(E5FileDialog.DontConfirmOverwrite) | |
| 223 ) | |
| 224 if fileName: | |
| 225 ext = os.path.splitext(fileName)[1] | |
| 226 if not ext: | |
| 227 ex = selectedFilter.split("(*")[1].split(")")[0] | |
| 228 if ex: | |
| 229 fileName += ex | |
| 230 self.__writeToFile(fileName) | |
| 231 | |
| 232 @pyqtSlot() | |
| 233 def on_copyButton_clicked(self): | |
| 234 """ | |
| 235 Private slot to copy the requirements text to the clipboard. | |
| 236 """ | |
| 237 txt = self.requirementsEdit.toPlainText() | |
| 238 cb = QApplication.clipboard() | |
| 239 cb.setText(txt) | |
| 240 | |
| 241 @pyqtSlot() | |
| 242 def on_insertButton_clicked(self): | |
| 243 """ | |
| 244 Private slot to insert the requirements text at the cursor position | |
| 245 of the current editor. | |
| 246 """ | |
| 247 aw = e5App().getObject("ViewManager").activeWindow() | |
| 248 if aw: | |
| 249 aw.beginUndoAction() | |
| 250 cline, cindex = aw.getCursorPosition() | |
| 251 aw.insertAt(self.requirementsEdit.toPlainText(), cline, cindex) | |
| 252 aw.endUndoAction() | |
| 253 | |
| 254 @pyqtSlot() | |
| 255 def on_replaceSelectionButton_clicked(self): | |
| 256 """ | |
| 257 Private slot to replace the selected text of the current editor | |
| 258 with the requirements text. | |
| 259 """ | |
| 260 aw = e5App().getObject("ViewManager").activeWindow() | |
| 261 if aw: | |
| 262 aw.beginUndoAction() | |
| 263 aw.replaceSelectedText(self.requirementsEdit.toPlainText()) | |
| 264 aw.endUndoAction() | |
| 265 | |
| 266 @pyqtSlot() | |
| 267 def on_replaceAllButton_clicked(self): | |
| 268 """ | |
| 269 Private slot to replace the text of the current editor with the | |
| 270 requirements text. | |
| 271 """ | |
| 272 aw = e5App().getObject("ViewManager").activeWindow() | |
| 273 if aw: | |
| 274 aw.setText(self.requirementsEdit.toPlainText()) |
