| zyc921120 |
2018-06-13 21:05 |
解决第5章练习题‘’StringListDlg”对PyQt5+Python3兼容性的问题
- #!/usr/bin/env python
# Copyright (c) 2007-8 Qtrac Ltd. All rights reserved.
# This program or module is free software: you can redistribute it and/or
# modify it under the terms of the GNU General Public License as published
# by the Free Software Foundation, either version 2 of the License, or
# version 3 of the License, or (at your option) any later version. It is
# provided for educational purposes and is distributed in the hope that
# it will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
# the GNU General Public License for more details.
import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
MAC = "qt_mac_set_native_menubar" in dir()
class StringListDlg(QDialog):
def __init__(self, name, stringlist=None, parent=None):
super(StringListDlg, self).__init__(parent)
self.name = name
self.listWidget = QListWidget()
if stringlist is not None:
self.listWidget.addItems(stringlist)
self.listWidget.setCurrentRow(0)
buttonLayout = QVBoxLayout()
for text, slot in (("&Add...", self.add),
("&Edit...", self.edit),
("&Remove...", self.remove),
("&Up", self.up),
("&Down", self.down),
("&Sort", self.listWidget.sortItems),
("Close", self.accept)):
button = QPushButton(text)
if not MAC:
button.setFocusPolicy(Qt.NoFocus)
if text == "Close":
buttonLayout.addStretch()
buttonLayout.addWidget(button)
button.clicked.connect(slot)
layout = QHBoxLayout()
layout.addWidget(self.listWidget)
layout.addLayout(buttonLayout)
self.setLayout(layout)
self.setWindowTitle("Edit %s List" % self.name)
def add(self):
row = self.listWidget.currentRow()
title = "Add %s" % self.name
string, ok = QInputDialog.getText(self, title, title)
if ok :
self.listWidget.insertItem(row, string)
def edit(self):
row = self.listWidget.currentRow()
item = self.listWidget.item(row)
if item is not None:
title = "Edit %s" % self.name
string, ok = QInputDialog.getText(self, title, title,
QLineEdit.Normal, item.text())
if ok :
item.setText(string)
def remove(self):
row = self.listWidget.currentRow()
item = self.listWidget.item(row)
if item is None:
return
reply = QMessageBox.question(self, "Remove %s" % self.name,
"Remove %s `%s'?" % (
self.name, item.text()),
QMessageBox.Yes|QMessageBox.No)
if reply == QMessageBox.Yes:
item = self.listWidget.takeItem(row)
del item
def up(self):
row = self.listWidget.currentRow()
if row >= 1:
item = self.listWidget.takeItem(row)
self.listWidget.insertItem(row - 1, item)
self.listWidget.setCurrentItem(item)
def down(self):
row = self.listWidget.currentRow()
if row < self.listWidget.count() - 1:
item = self.listWidget.takeItem(row)
self.listWidget.insertItem(row + 1, item)
self.listWidget.setCurrentItem(item)
def reject(self):
self.accept()
def accept(self):
self.stringlist = []
for row in range(self.listWidget.count()):
self.stringlist.append(self.listWidget.item(row).text())
QDialog.accept(self)
if __name__ == "__main__":
fruit = ["Banana", "Apple", "Elderberry", "Clementine", "Fig",
"Guava", "Mango", "Honeydew Melon", "Date", "Watermelon",
"Tangerine", "Ugli Fruit", "Juniperberry", "Kiwi",
"Lemon", "Nectarine", "Plum", "Raspberry", "Strawberry",
"Orange"]
app = QApplication(sys.argv)
form = StringListDlg("Fruit", fruit)
form.exec_()
print("\n".join([str(x) for x in form.stringlist]))
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