python3+PyQt5+Qt Designer实现扩展对话框

import sysfrom PyQt5.QtCore import Qt,pyqtSignalfrom PyQt5.QtWidgets import (QApplication, QCheckBox, QDialog, QFrame,    QGridLayout, QHBoxLayout, QLabel, QLayout, QLineEdit,    QPushButton, QVBoxLayout)class FindAndReplaceDlg(QDialog):  find = pyqtSignal(str,bool,bool,bool,bool,bool)  replace = pyqtSignal(str,str,bool,bool,bool,bool,bool)     def __init__(self, parent=None):    super(FindAndReplaceDlg, self).__init__(parent)    findLabel = QLabel("Find &what:")    self.findLineEdit = QLineEdit()    findLabel.setBuddy(self.findLineEdit)    replaceLabel = QLabel("Replace w&ith:")    self.replaceLineEdit = QLineEdit()    replaceLabel.setBuddy(self.replaceLineEdit)    self.caseCheckBox = QCheckBox("&Case sensitive")    self.wholeCheckBox = QCheckBox("Wh&ole words")    self.wholeCheckBox.setChecked(True)    self.moreFrame = QFrame()    self.moreFrame.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken)    self.backwardsCheckBox = QCheckBox("Search &Backwards")    self.regexCheckBox = QCheckBox("Regular E&xpression")    self.ignoreNotesCheckBox = QCheckBox("Ignore foot¬es "                          "and endnotes")    line = QFrame()    line.setFrameStyle(QFrame.VLine|QFrame.Sunken)    self.findButton = QPushButton("&Find")    self.replaceButton = QPushButton("&Replace")    closeButton = QPushButton("Close")    self.moreButton = QPushButton("&More")    self.moreButton.setCheckable(True)    gridLayout = QGridLayout()    gridLayout.addWidget(findLabel, 0, 0)    gridLayout.addWidget(self.findLineEdit, 0, 1)    gridLayout.addWidget(replaceLabel, 1, 0)    gridLayout.addWidget(self.replaceLineEdit, 1, 1)    frameLayout = QVBoxLayout()    frameLayout.addWidget(self.backwardsCheckBox)    frameLayout.addWidget(self.regexCheckBox)    frameLayout.addWidget(self.ignoreNotesCheckBox)    self.moreFrame.setLayout(frameLayout)    leftLayout = QVBoxLayout()    leftLayout.addLayout(gridLayout)    leftLayout.addWidget(self.caseCheckBox)    leftLayout.addWidget(self.wholeCheckBox)    leftLayout.addWidget(self.moreFrame)    buttonLayout = QVBoxLayout()    buttonLayout.addWidget(self.findButton)    buttonLayout.addWidget(self.replaceButton)    buttonLayout.addWidget(closeButton)    buttonLayout.addWidget(self.moreButton)    buttonLayout.addStretch()    mainLayout = QHBoxLayout()    mainLayout.addLayout(leftLayout)    mainLayout.addWidget(line)    mainLayout.addLayout(buttonLayout)    self.setLayout(mainLayout)    self.moreFrame.hide()    mainLayout.setSizeConstraint(QLayout.SetFixedSize)    self.moreButton.toggled[bool].connect(self.setvisible)    self.findLineEdit.textEdited.connect(self.updateUi)    self.findButton.clicked.connect(self.findClicked)    self.replaceButton.clicked.connect(self.replaceClicked)    self.updateUi()    self.setWindowTitle("Find and Replace")  def setvisible(self,YN):    self.moreFrame.setVisible(YN)  def findClicked(self):    self.find.emit(self.findLineEdit.text(),        self.caseCheckBox.isChecked(),        self.wholeCheckBox.isChecked(),        self.backwardsCheckBox.isChecked(),        self.regexCheckBox.isChecked(),        self.ignoreNotesCheckBox.isChecked())  def replaceClicked(self):    self.replace.emit(self.findLineEdit.text(),        self.replaceLineEdit.text(),        self.caseCheckBox.isChecked(),        self.wholeCheckBox.isChecked(),        self.backwardsCheckBox.isChecked(),        self.regexCheckBox.isChecked(),        self.ignoreNotesCheckBox.isChecked())  def updateUi(self):    enable = self.findLineEdit.text()    self.findButton.setEnabled(bool(enable))    self.replaceButton.setEnabled(bool(enable))if __name__ == "__main__":  def find(what, *args):    print("Find {0} {1}".format(what, [x for x in args]))  def replace(old, new, *args):    print("Replace {0} with {1} {2}".format(       old, new, [x for x in args]))  app = QApplication(sys.argv)  form = FindAndReplaceDlg()  form.find.connect(find)  form.replace.connect(replace)      form.show()  app.exec_()

# -*- coding: utf-8 -*-# Form implementation generated from reading ui file '/home/yrd/eric_workspace/chap09/findandreplacedlg/findandreplacedlg.ui'## Created by: PyQt5 UI code generator 5.7## WARNING! All changes made in this file will be lost!from PyQt5 import QtCore, QtGui, QtWidgetsclass Ui_FindAndReplaceDlg(object):  def setupUi(self, FindAndReplaceDlg):    FindAndReplaceDlg.setObjectName("FindAndReplaceDlg")    FindAndReplaceDlg.resize(355, 274)    self.mainlayout = QtWidgets.QHBoxLayout(FindAndReplaceDlg)    self.mainlayout.setSizeConstraint(QtWidgets.QLayout.SetFixedSize)    self.mainlayout.setContentsMargins(9, 9, 9, 9)    self.mainlayout.setSpacing(6)    self.mainlayout.setObjectName("mainlayout")    self.vboxlayout = QtWidgets.QVBoxLayout()    self.vboxlayout.setContentsMargins(0, 0, 0, 0)    self.vboxlayout.setSpacing(6)    self.vboxlayout.setObjectName("vboxlayout")    self.gridlayout = QtWidgets.QGridLayout()    self.gridlayout.setContentsMargins(0, 0, 0, 0)    self.gridlayout.setSpacing(6)    self.gridlayout.setObjectName("gridlayout")    self.replaceLineEdit = QtWidgets.QLineEdit(FindAndReplaceDlg)    self.replaceLineEdit.setObjectName("replaceLineEdit")    self.gridlayout.addWidget(self.replaceLineEdit, 1, 1, 1, 1)    self.findLineEdit = QtWidgets.QLineEdit(FindAndReplaceDlg)    self.findLineEdit.setObjectName("findLineEdit")    self.gridlayout.addWidget(self.findLineEdit, 0, 1, 1, 1)    self.label_2 = QtWidgets.QLabel(FindAndReplaceDlg)    self.label_2.setObjectName("label_2")    self.gridlayout.addWidget(self.label_2, 1, 0, 1, 1)    self.label = QtWidgets.QLabel(FindAndReplaceDlg)    self.label.setObjectName("label")    self.gridlayout.addWidget(self.label, 0, 0, 1, 1)    self.vboxlayout.addLayout(self.gridlayout)    self.vboxlayout1 = QtWidgets.QVBoxLayout()    self.vboxlayout1.setContentsMargins(0, 0, 0, 0)    self.vboxlayout1.setSpacing(6)    self.vboxlayout1.setObjectName("vboxlayout1")    self.caseCheckBox = QtWidgets.QCheckBox(FindAndReplaceDlg)    self.caseCheckBox.setObjectName("caseCheckBox")    self.vboxlayout1.addWidget(self.caseCheckBox)    self.wholeCheckBox = QtWidgets.QCheckBox(FindAndReplaceDlg)    self.wholeCheckBox.setChecked(True)    self.wholeCheckBox.setObjectName("wholeCheckBox")    self.vboxlayout1.addWidget(self.wholeCheckBox)    self.vboxlayout.addLayout(self.vboxlayout1)    spacerItem = QtWidgets.QSpacerItem(231, 16, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)    self.vboxlayout.addItem(spacerItem)    self.moreFrame = QtWidgets.QFrame(FindAndReplaceDlg)    self.moreFrame.setFrameShape(QtWidgets.QFrame.StyledPanel)    self.moreFrame.setFrameShadow(QtWidgets.QFrame.Raised)    self.moreFrame.setObjectName("moreFrame")    self.vboxlayout2 = QtWidgets.QVBoxLayout(self.moreFrame)    self.vboxlayout2.setContentsMargins(9, 9, 9, 9)    self.vboxlayout2.setSpacing(6)    self.vboxlayout2.setObjectName("vboxlayout2")    self.backwardsCheckBox = QtWidgets.QCheckBox(self.moreFrame)    self.backwardsCheckBox.setObjectName("backwardsCheckBox")    self.vboxlayout2.addWidget(self.backwardsCheckBox)    self.regexCheckBox = QtWidgets.QCheckBox(self.moreFrame)    self.regexCheckBox.setObjectName("regexCheckBox")    self.vboxlayout2.addWidget(self.regexCheckBox)    self.ignoreNotesCheckBox = QtWidgets.QCheckBox(self.moreFrame)    self.ignoreNotesCheckBox.setObjectName("ignoreNotesCheckBox")    self.vboxlayout2.addWidget(self.ignoreNotesCheckBox)    self.vboxlayout.addWidget(self.moreFrame)    self.mainlayout.addLayout(self.vboxlayout)    self.line = QtWidgets.QFrame(FindAndReplaceDlg)    self.line.setFrameShape(QtWidgets.QFrame.VLine)    self.line.setFrameShadow(QtWidgets.QFrame.Sunken)    self.line.setObjectName("line")    self.mainlayout.addWidget(self.line)    self.vboxlayout3 = QtWidgets.QVBoxLayout()    self.vboxlayout3.setContentsMargins(0, 0, 0, 0)    self.vboxlayout3.setSpacing(6)    self.vboxlayout3.setObjectName("vboxlayout3")    self.findButton = QtWidgets.QPushButton(FindAndReplaceDlg)    self.findButton.setFocusPolicy(QtCore.Qt.NoFocus)    self.findButton.setObjectName("findButton")    self.vboxlayout3.addWidget(self.findButton)    self.replaceButton = QtWidgets.QPushButton(FindAndReplaceDlg)    self.replaceButton.setFocusPolicy(QtCore.Qt.NoFocus)    self.replaceButton.setObjectName("replaceButton")    self.vboxlayout3.addWidget(self.replaceButton)    self.closeButton = QtWidgets.QPushButton(FindAndReplaceDlg)    self.closeButton.setFocusPolicy(QtCore.Qt.NoFocus)    self.closeButton.setObjectName("closeButton")    self.vboxlayout3.addWidget(self.closeButton)    self.moreButton = QtWidgets.QPushButton(FindAndReplaceDlg)    self.moreButton.setFocusPolicy(QtCore.Qt.NoFocus)    self.moreButton.setCheckable(True)    self.moreButton.setObjectName("moreButton")    self.vboxlayout3.addWidget(self.moreButton)    spacerItem1 = QtWidgets.QSpacerItem(21, 16, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)    self.vboxlayout3.addItem(spacerItem1)    self.mainlayout.addLayout(self.vboxlayout3)    self.label_2.setBuddy(self.replaceLineEdit)    self.label.setBuddy(self.findLineEdit)    self.retranslateUi(FindAndReplaceDlg)    self.closeButton.clicked.connect(FindAndReplaceDlg.reject)    self.moreButton.toggled['bool'].connect(self.moreFrame.setVisible)    QtCore.QMetaObject.connectSlotsByName(FindAndReplaceDlg)    FindAndReplaceDlg.setTabOrder(self.findLineEdit, self.replaceLineEdit)    FindAndReplaceDlg.setTabOrder(self.replaceLineEdit, self.caseCheckBox)    FindAndReplaceDlg.setTabOrder(self.caseCheckBox, self.wholeCheckBox)    FindAndReplaceDlg.setTabOrder(self.wholeCheckBox, self.backwardsCheckBox)    FindAndReplaceDlg.setTabOrder(self.backwardsCheckBox, self.regexCheckBox)    FindAndReplaceDlg.setTabOrder(self.regexCheckBox, self.ignoreNotesCheckBox)  def retranslateUi(self, FindAndReplaceDlg):    _translate = QtCore.QCoreApplication.translate    FindAndReplaceDlg.setWindowTitle(_translate("FindAndReplaceDlg", "Find and Replace"))    self.label_2.setText(_translate("FindAndReplaceDlg", "Replace w&ith:"))    self.label.setText(_translate("FindAndReplaceDlg", "Find &what:"))    self.caseCheckBox.setText(_translate("FindAndReplaceDlg", "&Case sensitive"))    self.wholeCheckBox.setText(_translate("FindAndReplaceDlg", "Wh&ole words"))    self.backwardsCheckBox.setText(_translate("FindAndReplaceDlg", "Search &Backwards"))    self.regexCheckBox.setText(_translate("FindAndReplaceDlg", "Regular E&xpression"))    self.ignoreNotesCheckBox.setText(_translate("FindAndReplaceDlg", "Ignore foot¬es and endnotes"))    self.findButton.setText(_translate("FindAndReplaceDlg", "&Find"))    self.replaceButton.setText(_translate("FindAndReplaceDlg", "&Replace"))    self.closeButton.setText(_translate("FindAndReplaceDlg", "Close"))    self.moreButton.setText(_translate("FindAndReplaceDlg", "&More"))

# -*- coding: utf-8 -*-"""Module implementing FindAndReplaceDlg."""from PyQt5.QtCore import pyqtSlot,pyqtSignalfrom PyQt5.QtWidgets import QDialog,QApplicationfrom Ui_findandreplacedlg import Ui_FindAndReplaceDlgclass FindAndReplaceDlg(QDialog, Ui_FindAndReplaceDlg):  """  Class documentation goes here.  """  find = pyqtSignal(str,bool,bool,bool,bool,bool)  replace = pyqtSignal(str,str,bool,bool,bool,bool,bool)     def __init__(self, parent=None):    """    Constructor    @param parent reference to the parent widget    @type QWidget    """    super(FindAndReplaceDlg, self).__init__(parent)    self.setupUi(self)    self.moreFrame.hide()    #self.layout().setSizeConstraint(QLayout.SetFixedSize)    self.updateUi()      @pyqtSlot(str)  def on_findLineEdit_textEdited(self, text):    """    Slot documentation goes here.    @param p0 DESCRIPTION    @type str    """    # TODO: not implemented yet    self.updateUi()  @pyqtSlot()  def on_findButton_clicked(self):    self.find.emit(self.findLineEdit.text(),            self.caseCheckBox.isChecked(),            self.wholeCheckBox.isChecked(),            self.backwardsCheckBox.isChecked(),            self.regexCheckBox.isChecked(),            self.ignoreNotesCheckBox.isChecked())      @pyqtSlot()  def on_replaceButton_clicked(self):    self.replace.emit(self.findLineEdit.text(),             self.replaceLineEdit.text(),             self.caseCheckBox.isChecked(),             self.wholeCheckBox.isChecked(),             self.backwardsCheckBox.isChecked(),             self.regexCheckBox.isChecked(),             self.ignoreNotesCheckBox.isChecked())  def updateUi(self):    enable = self.findLineEdit.text()    self.findButton.setEnabled(bool(enable))    self.replaceButton.setEnabled(bool(enable))if __name__ == "__main__":  import sys  def find(what, *args):    print("Find {0} {1}".format(what, [x for x in args]))  def replace(old, new, *args):    print("Replace {0} with {1} {2}".format(       old, new, [x for x in args]))  app = QApplication(sys.argv)  form = FindAndReplaceDlg()  form.find.connect(find)  form.replace.connect(replace)  form.show()  app.exec_()