class textedit(QtGui.QMainWindow): #create a class that inherits from QMainWindow or Top Level Container
#def readFile(self):
# dialog=QtGui.QFileDialog(self) #create a File Dialog
# self.fileName=dialog.getOpenFileName() #Open the File Dialog, and get the filename, or get None
# if(self.fileName<>None and self.fileName<>""): #if the filename is not null, then open and read its contents
# fileData=codecs.open(self.fileName,'r','utf-8').read()
# self.ui.textWindow.setText(fileData)
# else:
# print 'Error\n' #if no file is selected, print error
def saveFile(self):
dialog=saveFileName=QtGui.QFileDialog(self)
self.saveName=dialog.getSaveFileName()
if(self.saveName<>None and self.saveName<>""):
file=codecs.open(self.saveName,'w','utf-8') #opens the file in read mode, but with unicode support
file.write(unicode((self.ui.textWindow.toPlainText()))) #converts the text to unicode, and then writes to the file
self.ui.buttonSave.setEnabled(False) #after saving, disable the save button
def textChanged(self):
self.ui.buttonSave.setEnabled(True) #Enable Save Button
def openFile(self):
if self.ui.buttonSave.isEnabled()==True: #if save button enabled, means changes are there
message=QtGui.QMessageBox(self)
message.setText("Unsaved Changes")
message.setWindowTitle("Notepad")
message.addButton("Save",QtGui.QMessageBox.AcceptRole) #add Save Button to Message Box
message.addButton("Discard",QtGui.QMessageBox.DestructiveRole) #add Discard button to message box
message.addButton("Cancel",QtGui.QMessageBox.RejectRole) #added cancel button to message box
message.exec_() #message loop
response=message.clickedButton().text() #getting the response, and checking which button was clicked
if response=="Save": #if save was clicked, call the save slot
self.saveFile()
elif response=="Discard": #if discard was called, show the dialog, and open the file accordingly
dialog=QtGui.QFileDialog(self)
self.fileName=dialog.getOpenFileName()
if(self.fileName<>None and self.fileName<>""):
fileData=codecs.open(self.fileName,"r","utf-8").read()
self.ui.textWindow.setText(fileData)
self.ui.buttonSave.setEnabled(False)
def __init__(self,parent=None): #constructor. It has no parent by default, as it is a top level window
QtGui.QWidget.__init__(self,parent)
self.ui=Ui_MainWindow() #call constructor for the Ui_MainWindow, which is pyuic4 compiled class
self.ui.setupUi(self) #setup the ui
self.ui.buttonSave.setEnabled(False) #By Default, Save Button is Disabled
QtCore.QObject.connect(self.ui.buttonOpen,QtCore.SIGNAL('clicked()'),self.openFile)
QtCore.QObject.connect(self.ui.buttonSave,QtCore.SIGNAL('clicked()'),self.saveFile)
QtCore.QObject.connect(self.ui.textWindow,QtCore.SIGNAL('textChanged()'),self.textChanged) #connects textchanged to slot to Enable save button
def __init__(self,parent=None): #constructor. It has no parent by default, as it is a top level window
QtGui.QWidget.__init__(self,parent)
self.ui=Ui_MainWindow() #call constructor for the Ui_MainWindow, which is pyuic4 compiled class
self.ui.setupUi(self) #setup the ui
self.ui.buttonSave.setEnabled(False) #By Default, Save Button is Disabled
QtCore.QObject.connect(self.ui.buttonOpen,QtCore.SIGNAL('clicked()'),self.openFile)
QtCore.QObject.connect(self.ui.buttonSave,QtCore.SIGNAL('clicked()'),self.saveFile)
QtCore.QObject.connect(self.ui.textWindow,QtCore.SIGNAL('textChanged()'),self.textChanged) #connects textchanged to slot to Enable save button
