--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/PipInterface/PipFreezeDialog.py Sat Mar 02 11:15:24 2019 +0100
@@ -0,0 +1,286 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2015 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a dialog to generate a requirements file.
+"""
+
+from __future__ import unicode_literals
+try:
+ str = unicode # __IGNORE_EXCEPTION__
+except NameError:
+ pass
+
+import os
+
+from PyQt5.QtCore import pyqtSlot, Qt
+from PyQt5.QtWidgets import QDialog, QDialogButtonBox, QAbstractButton, \
+ QApplication
+
+from E5Gui import E5MessageBox, E5FileDialog
+from E5Gui.E5PathPicker import E5PathPickerModes
+from E5Gui.E5Application import e5App
+
+from .Ui_PipFreezeDialog import Ui_PipFreezeDialog
+
+import Utilities
+
+
+class PipFreezeDialog(QDialog, Ui_PipFreezeDialog):
+ """
+ Class implementing a dialog to generate a requirements file.
+ """
+ def __init__(self, pip, parent=None):
+ """
+ Constructor
+
+ @param pip reference to the master object
+ @type Pip
+ @param parent reference to the parent widget
+ @type QWidget
+ """
+ super(PipFreezeDialog, self).__init__(parent)
+ self.setupUi(self)
+ self.setWindowFlags(Qt.Window)
+
+ self.__refreshButton = self.buttonBox.addButton(
+ self.tr("&Refresh"), QDialogButtonBox.ActionRole)
+
+ self.requirementsFilePicker.setMode(E5PathPickerModes.SaveFileMode)
+ self.requirementsFilePicker.setFilters(
+ self.tr("Text Files (*.txt);;All Files (*)"))
+
+ self.__pip = pip
+
+ self.__requirementsEdited = False
+ self.__requirementsAvailable = False
+
+ self.__updateButtons()
+
+ def closeEvent(self, e):
+ """
+ Protected slot implementing a close event handler.
+
+ @param e close event
+ @type QCloseEvent
+ """
+ QApplication.restoreOverrideCursor()
+ e.accept()
+
+ @pyqtSlot(bool)
+ def on_localCheckBox_clicked(self, checked):
+ """
+ Private slot handling the switching of the local mode.
+
+ @param checked state of the local check box
+ @type bool
+ """
+ self.__refresh()
+
+ @pyqtSlot(str)
+ def on_requirementsFilePicker_textChanged(self, txt):
+ """
+ Private slot handling a change of the requirements file name.
+
+ @param txt name of the requirements file
+ @type str
+ """
+ self.__updateButtons()
+
+ @pyqtSlot()
+ def on_requirementsEdit_textChanged(self):
+ """
+ Private slot handling changes of the requirements text.
+ """
+ self.__requirementsEdited = True
+
+ @pyqtSlot(QAbstractButton)
+ def on_buttonBox_clicked(self, button):
+ """
+ Private slot called by a button of the button box clicked.
+
+ @param button button that was clicked
+ @type QAbstractButton
+ """
+ if button == self.buttonBox.button(QDialogButtonBox.Close):
+ self.close()
+ elif button == self.__refreshButton:
+ self.__refresh()
+
+ def __refresh(self):
+ """
+ Private slot to refresh the displayed list.
+ """
+ if self.__requirementsEdited:
+ ok = E5MessageBox.yesNo(
+ self,
+ self.tr("Generate Requirements"),
+ self.tr("""The requirements were changed. Do you want"""
+ """ to overwrite these changes?"""))
+ else:
+ ok = True
+ if ok:
+ self.start()
+
+ def start(self, venvName):
+ """
+ Public method to start the command.
+
+ @param venvName name of the environment to act upon
+ @type str
+ """
+ self.requirementsEdit.clear()
+ self.__requirementsAvailable = False
+
+ interpreter = self.__pip.getVirtualenvInterpreter(venvName)
+ if not interpreter:
+ return
+
+ args = ["-m", "pip", "freeze"]
+ if self.localCheckBox.isChecked():
+ args.append("--local")
+ if self.requirementsFilePicker.text():
+ fileName = Utilities.toNativeSeparators(
+ self.requirementsFilePicker.text())
+ if os.path.exists(fileName):
+ args.append("--requirement")
+ args.append(fileName)
+
+ QApplication.setOverrideCursor(Qt.WaitCursor)
+ success, output = self.__pip.runProcess(args, interpreter)
+
+ if success:
+ self.requirementsEdit.setPlainText(output)
+ self.__requirementsAvailable = True
+ else:
+ self.requirementsEdit.setPlainText(
+ self.tr("No output generated by 'pip freeze'."))
+
+ QApplication.restoreOverrideCursor()
+ self.__updateButtons()
+
+ self.__requirementsEdited = False
+
+ def __updateButtons(self):
+ """
+ Private method to set the state of the various buttons.
+ """
+ self.saveButton.setEnabled(
+ self.__requirementsAvailable and
+ bool(self.requirementsFilePicker.text())
+ )
+ self.saveToButton.setEnabled(self.__requirementsAvailable)
+ self.copyButton.setEnabled(self.__requirementsAvailable)
+
+ aw = e5App().getObject("ViewManager").activeWindow()
+ if aw and self.__requirementsAvailable:
+ self.insertButton.setEnabled(True)
+ self.replaceAllButton.setEnabled(True)
+ self.replaceSelectionButton.setEnabled(
+ aw.hasSelectedText())
+ else:
+ self.insertButton.setEnabled(False)
+ self.replaceAllButton.setEnabled(False)
+ self.replaceSelectionButton.setEnabled(False)
+
+ def __writeToFile(self, fileName):
+ """
+ Private method to write the requirements text to a file.
+
+ @param fileName name of the file to write to
+ @type str
+ """
+ if os.path.exists(fileName):
+ ok = E5MessageBox.warning(
+ self,
+ self.tr("Generate Requirements"),
+ self.tr("""The file <b>{0}</b> already exists. Do you want"""
+ """ to overwrite it?""").format(fileName))
+ if not ok:
+ return
+
+ try:
+ f = open(fileName, "w")
+ f.write(self.requirementsEdit.toPlainText())
+ f.close()
+ except (OSError, IOError) as err:
+ E5MessageBox.critical(
+ self,
+ self.tr("Generate Requirements"),
+ self.tr("""<p>The requirements could not be written"""
+ """ to <b>{0}</b>.</p><p>Reason: {1}</p>""")
+ .format(fileName, str(err)))
+
+ @pyqtSlot()
+ def on_saveButton_clicked(self):
+ """
+ Private slot to save the requirements text to the requirements file.
+ """
+ fileName = self.requirementsFilePicker.text()
+ self.__writeToFile(fileName)
+
+ @pyqtSlot()
+ def on_saveToButton_clicked(self):
+ """
+ Private slot to write the requirements text to a new file.
+ """
+ fileName, selectedFilter = E5FileDialog.getSaveFileNameAndFilter(
+ self,
+ self.tr("Generate Requirements"),
+ os.path.expanduser("~"),
+ self.tr("Text Files (*.txt);;All Files (*)"),
+ None,
+ E5FileDialog.Options(E5FileDialog.DontConfirmOverwrite)
+ )
+ if fileName:
+ ext = os.path.splitext(fileName)[1]
+ if not ext:
+ ex = selectedFilter.split("(*")[1].split(")")[0]
+ if ex:
+ fileName += ex
+ self.__writeToFile(fileName)
+
+ @pyqtSlot()
+ def on_copyButton_clicked(self):
+ """
+ Private slot to copy the requirements text to the clipboard.
+ """
+ txt = self.requirementsEdit.toPlainText()
+ cb = QApplication.clipboard()
+ cb.setText(txt)
+
+ @pyqtSlot()
+ def on_insertButton_clicked(self):
+ """
+ Private slot to insert the requirements text at the cursor position
+ of the current editor.
+ """
+ aw = e5App().getObject("ViewManager").activeWindow()
+ if aw:
+ aw.beginUndoAction()
+ aw.insert(self.requirementsEdit.toPlainText())
+ aw.endUndoAction()
+
+ @pyqtSlot()
+ def on_replaceSelectionButton_clicked(self):
+ """
+ Private slot to replace the selected text of the current editor
+ with the requirements text.
+ """
+ aw = e5App().getObject("ViewManager").activeWindow()
+ if aw:
+ aw.beginUndoAction()
+ aw.replaceSelectedText(self.requirementsEdit.toPlainText())
+ aw.endUndoAction()
+
+ @pyqtSlot()
+ def on_replaceAllButton_clicked(self):
+ """
+ Private slot to replace the text of the current editor with the
+ requirements text.
+ """
+ aw = e5App().getObject("ViewManager").activeWindow()
+ if aw:
+ aw.setText(self.requirementsEdit.toPlainText())
