Prepare newchandialog module for using qtpy

src/bitmessageqt/addressvalidator.py

@@ -1,37 +1,35 @@
 """
-Address validator module.
+The validator for address and passphrase QLineEdits
+used in `.dialogs.NewChanDialog`.
 """
-# pylint: disable=too-many-branches,too-many-arguments
+# pylint: disable=too-many-arguments
 
-from PyQt4 import QtGui
 from Queue import Empty
 
+from qtpy import QtGui
+
 from account import getSortedAccounts
 from addresses import decodeAddress, addBMIfNotPresent
-from queues import apiAddressGeneratorReturnQueue, addressGeneratorQueue
+from queues import addressGeneratorQueue, apiAddressGeneratorReturnQueue
 from tr import _translate
 from utils import str_chan
 
 
 class AddressPassPhraseValidatorMixin(object):
     """Bitmessage address or passphrase validator class for Qt UI"""
     def setParams(
-            self,
-            passPhraseObject=None,
-            addressObject=None,
-            feedBackObject=None,
-            buttonBox=None,
-            addressMandatory=True,
+        self, passPhraseObject=None, addressObject=None,
+        feedBackObject=None, button=None, addressMandatory=True
     ):
-        """Initialisation"""
+        """Initialization"""
         self.addressObject = addressObject
         self.passPhraseObject = passPhraseObject
         self.feedBackObject = feedBackObject
-        self.buttonBox = buttonBox
         self.addressMandatory = addressMandatory
         self.isValid = False
         # save default text
-        self.okButtonLabel = self.buttonBox.button(QtGui.QDialogButtonBox.Ok).text()
+        self.okButton = button
+        self.okButtonLabel = button.text()
 
     def setError(self, string):
         """Indicate that the validation is pending or failed"""
@@ -42,13 +40,13 @@ def setError(self, string):
             self.feedBackObject.setStyleSheet("QLabel { color : red; }")
             self.feedBackObject.setText(string)
         self.isValid = False
-        if self.buttonBox:
-            self.buttonBox.button(QtGui.QDialogButtonBox.Ok).setEnabled(False)
+        if self.okButton:
+            self.okButton.setEnabled(False)
             if string is not None and self.feedBackObject is not None:
-                self.buttonBox.button(QtGui.QDialogButtonBox.Ok).setText(
+                self.okButton.setText(
                     _translate("AddressValidator", "Invalid"))
             else:
-                self.buttonBox.button(QtGui.QDialogButtonBox.Ok).setText(
+                self.okButton.setText(
                     _translate("AddressValidator", "Validating..."))
 
     def setOK(self, string):
@@ -60,9 +58,9 @@ def setOK(self, string):
             self.feedBackObject.setStyleSheet("QLabel { }")
             self.feedBackObject.setText(string)
         self.isValid = True
-        if self.buttonBox:
-            self.buttonBox.button(QtGui.QDialogButtonBox.Ok).setEnabled(True)
-            self.buttonBox.button(QtGui.QDialogButtonBox.Ok).setText(self.okButtonLabel)
+        if self.okButton:
+            self.okButton.setEnabled(True)
+            self.okButton.setText(self.okButtonLabel)
 
     def checkQueue(self):
         """Validator queue loop"""
@@ -75,7 +73,8 @@ def checkQueue(self):
 
         while True:
             try:
-                addressGeneratorReturnValue = apiAddressGeneratorReturnQueue.get(False)
+                addressGeneratorReturnValue = \
+                    apiAddressGeneratorReturnQueue.get(False)
             except Empty:
                 if gotOne:
                     break
@@ -85,96 +84,120 @@ def checkQueue(self):
                 gotOne = True
 
         if not addressGeneratorReturnValue:
-            self.setError(_translate("AddressValidator", "Address already present as one of your identities."))
-            return (QtGui.QValidator.Intermediate, 0)
-        if addressGeneratorReturnValue[0] == 'chan name does not match address':
-            self.setError(
-                _translate(
-                    "AddressValidator",
-                    "Although the Bitmessage address you "
-                    "entered was valid, it doesn't match the chan name."))
-            return (QtGui.QValidator.Intermediate, 0)
-        self.setOK(_translate("MainWindow", "Passphrase and address appear to be valid."))
+            self.setError(_translate(
+                "AddressValidator",
+                "Address already present as one of your identities."
+            ))
+            return
+        if addressGeneratorReturnValue[0] == \
+                'chan name does not match address':
+            self.setError(_translate(
+                "AddressValidator",
+                "Although the Bitmessage address you entered was valid,"
+                " it doesn\'t match the chan name."
+            ))
+            return
+        self.setOK(_translate(
+            "MainWindow", "Passphrase and address appear to be valid."))
 
     def returnValid(self):
         """Return the value of whether the validation was successful"""
-        if self.isValid:
-            return QtGui.QValidator.Acceptable
-        return QtGui.QValidator.Intermediate
+        return QtGui.QValidator.Acceptable if self.isValid \
+            else QtGui.QValidator.Intermediate
 
     def validate(self, s, pos):
         """Top level validator method"""
-        if self.addressObject is None:
+        try:
+            address = self.addressObject.text().encode('utf-8')
+        except AttributeError:
             address = None
-        else:
-            address = str(self.addressObject.text().toUtf8())
-            if address == "":
-                address = None
-        if self.passPhraseObject is None:
+        try:
+            passPhrase = self.passPhraseObject.text().encode('utf-8')
+        except AttributeError:
             passPhrase = ""
-        else:
-            passPhrase = str(self.passPhraseObject.text().toUtf8())
-            if passPhrase == "":
-                passPhrase = None
 
         # no chan name
-        if passPhrase is None:
-            self.setError(_translate("AddressValidator", "Chan name/passphrase needed. You didn't enter a chan name."))
-            return (QtGui.QValidator.Intermediate, pos)
-
-        if self.addressMandatory or address is not None:
+        if not passPhrase:
+            self.setError(_translate(
+                "AddressValidator",
+                "Chan name/passphrase needed. You didn't enter a chan name."
+            ))
+            return (QtGui.QValidator.Intermediate, s, pos)
+
+        if self.addressMandatory or address:
             # check if address already exists:
             if address in getSortedAccounts():
-                self.setError(_translate("AddressValidator", "Address already present as one of your identities."))
-                return (QtGui.QValidator.Intermediate, pos)
+                self.setError(_translate(
+                    "AddressValidator",
+                    "Address already present as one of your identities."
+                ))
+                return (QtGui.QValidator.Intermediate, s, pos)
 
+            status = decodeAddress(address)[0]
             # version too high
-            if decodeAddress(address)[0] == 'versiontoohigh':
-                self.setError(
-                    _translate(
-                        "AddressValidator",
-                        "Address too new. Although that Bitmessage"
-                        " address might be valid, its version number"
-                        " is too new for us to handle. Perhaps you need"
-                        " to upgrade Bitmessage."))
-                return (QtGui.QValidator.Intermediate, pos)
-
+            if status == 'versiontoohigh':
+                self.setError(_translate(
+                    "AddressValidator",
+                    "Address too new. Although that Bitmessage address"
+                    " might be valid, its version number is too new"
+                    " for us to handle. Perhaps you need to upgrade"
+                    " Bitmessage."
+                ))
+                return (QtGui.QValidator.Intermediate, s, pos)
             # invalid
-            if decodeAddress(address)[0] != 'success':
-                self.setError(_translate("AddressValidator", "The Bitmessage address is not valid."))
-                return (QtGui.QValidator.Intermediate, pos)
+            if status != 'success':
+                self.setError(_translate(
+                    "AddressValidator",
+                    "The Bitmessage address is not valid."
+                ))
+                return (QtGui.QValidator.Intermediate, s, pos)
 
         # this just disables the OK button without changing the feedback text
         # but only if triggered by textEdited, not by clicking the Ok button
-        if not self.buttonBox.button(QtGui.QDialogButtonBox.Ok).hasFocus():
+        if not self.okButton.hasFocus():
             self.setError(None)
 
         # check through generator
-        if address is None:
-            addressGeneratorQueue.put(('createChan', 4, 1, str_chan + ' ' + str(passPhrase), passPhrase, False))
+        if not address:
+            addressGeneratorQueue.put((
+                'createChan', 4, 1,
+                str_chan + ' ' + passPhrase, passPhrase, False
+            ))
         else:
-            addressGeneratorQueue.put(
-                ('joinChan', addBMIfNotPresent(address),
-                 "{} {}".format(str_chan, passPhrase), passPhrase, False))
+            addressGeneratorQueue.put((
+                'joinChan', addBMIfNotPresent(address),
+                "{} {}".format(str_chan, passPhrase), passPhrase, False
+            ))
 
-        if self.buttonBox.button(QtGui.QDialogButtonBox.Ok).hasFocus():
-            return (self.returnValid(), pos)
-        return (QtGui.QValidator.Intermediate, pos)
+        if self.okButton.hasFocus():
+            return (self.returnValid(), s, pos)
+        else:
+            return (QtGui.QValidator.Intermediate, s, pos)
 
     def checkData(self):
         """Validator Qt signal interface"""
-        return self.validate("", 0)
+        return self.validate(u"", 0)
 
 
 class AddressValidator(QtGui.QValidator, AddressPassPhraseValidatorMixin):
     """AddressValidator class for Qt UI"""
-    def __init__(self, parent=None, passPhraseObject=None, feedBackObject=None, buttonBox=None, addressMandatory=True):
+    def __init__(
+        self, parent=None, passPhraseObject=None, feedBackObject=None,
+        button=None, addressMandatory=True
+    ):
         super(AddressValidator, self).__init__(parent)
-        self.setParams(passPhraseObject, parent, feedBackObject, buttonBox, addressMandatory)
+        self.setParams(
+            passPhraseObject, parent, feedBackObject, button,
+            addressMandatory)
 
 
 class PassPhraseValidator(QtGui.QValidator, AddressPassPhraseValidatorMixin):
     """PassPhraseValidator class for Qt UI"""
-    def __init__(self, parent=None, addressObject=None, feedBackObject=None, buttonBox=None, addressMandatory=False):
+    def __init__(
+        self, parent=None, addressObject=None, feedBackObject=None,
+        button=None, addressMandatory=False
+    ):
         super(PassPhraseValidator, self).__init__(parent)
-        self.setParams(parent, addressObject, feedBackObject, buttonBox, addressMandatory)
+        self.setParams(
+            parent, addressObject, feedBackObject, button,
+            addressMandatory)

src/bitmessageqt/newchandialog.py

@@ -1,10 +1,8 @@
 """
-src/bitmessageqt/newchandialog.py
-=================================
-
+NewChanDialog class definition
 """
 
-from PyQt4 import QtCore, QtGui
+from qtpy import QtCore, QtWidgets
 
 import widgets
 from addresses import addBMIfNotPresent
@@ -15,30 +13,21 @@
 from utils import str_chan
 
 
-class NewChanDialog(QtGui.QDialog):
-    """The `New Chan` dialog"""
+class NewChanDialog(QtWidgets.QDialog):
+    """The "New Chan" dialog"""
     def __init__(self, parent=None):
         super(NewChanDialog, self).__init__(parent)
         widgets.load('newchandialog.ui', self)
         self.parent = parent
-        self.chanAddress.setValidator(
-            AddressValidator(
-                self.chanAddress,
-                self.chanPassPhrase,
-                self.validatorFeedback,
-                self.buttonBox,
-                False))
-        self.chanPassPhrase.setValidator(
-            PassPhraseValidator(
-                self.chanPassPhrase,
-                self.chanAddress,
-                self.validatorFeedback,
-                self.buttonBox,
-                False))
+        self.chanAddress.setValidator(AddressValidator(
+            self.chanAddress, self.chanPassPhrase, self.validatorFeedback,
+            self.buttonBox.button(QtWidgets.QDialogButtonBox.Ok), False))
+        self.chanPassPhrase.setValidator(PassPhraseValidator(
+            self.chanPassPhrase, self.chanAddress, self.validatorFeedback,
+            self.buttonBox.button(QtWidgets.QDialogButtonBox.Ok), False))
 
         self.timer = QtCore.QTimer()
-        QtCore.QObject.connect(  # pylint: disable=no-member
-            self.timer, QtCore.SIGNAL("timeout()"), self.delayedUpdateStatus)
+        self.timer.timeout.connect(self.delayedUpdateStatus)
         self.timer.start(500)  # milliseconds
         self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
         self.show()
@@ -52,32 +41,47 @@ def accept(self):
         self.timer.stop()
         self.hide()
         apiAddressGeneratorReturnQueue.queue.clear()
-        if self.chanAddress.text().toUtf8() == "":
-            addressGeneratorQueue.put(
-                ('createChan', 4, 1, str_chan + ' ' + str(self.chanPassPhrase.text().toUtf8()),
-                 self.chanPassPhrase.text().toUtf8(),
-                 True))
+        passPhrase = self.chanPassPhrase.text().encode('utf-8')
+        if self.chanAddress.text() == "":
+            addressGeneratorQueue.put((
+                'createChan', 4, 1,
+                str_chan + ' ' + passPhrase, passPhrase, True
+            ))
         else:
-            addressGeneratorQueue.put(
-                ('joinChan', addBMIfNotPresent(self.chanAddress.text().toUtf8()),
-                 str_chan + ' ' + str(self.chanPassPhrase.text().toUtf8()),
-                 self.chanPassPhrase.text().toUtf8(),
-                 True))
+            addressGeneratorQueue.put((
+                'joinChan', addBMIfNotPresent(self.chanAddress.text()),
+                str_chan + ' ' + passPhrase, passPhrase, True
+            ))
         addressGeneratorReturnValue = apiAddressGeneratorReturnQueue.get(True)
-        if addressGeneratorReturnValue and addressGeneratorReturnValue[0] != 'chan name does not match address':
-            UISignalQueue.put(('updateStatusBar', _translate(
-                "newchandialog", "Successfully created / joined chan %1").arg(unicode(self.chanPassPhrase.text()))))
+        if (
+            len(addressGeneratorReturnValue) > 0
+            and addressGeneratorReturnValue[0]
+            != 'chan name does not match address'
+        ):
+            UISignalQueue.put((
+                'updateStatusBar',
+                _translate(
+                    "newchandialog",
+                    "Successfully created / joined chan {0}"
+                ).format(passPhrase)
+            ))
             self.parent.ui.tabWidget.setCurrentIndex(
                 self.parent.ui.tabWidget.indexOf(self.parent.ui.chans)
             )
-            self.done(QtGui.QDialog.Accepted)
+            self.done(QtWidgets.QDialog.Accepted)
         else:
-            UISignalQueue.put(('updateStatusBar', _translate("newchandialog", "Chan creation / joining failed")))
-            self.done(QtGui.QDialog.Rejected)
+            UISignalQueue.put((
+                'updateStatusBar',
+                _translate("newchandialog", "Chan creation / joining failed")
+            ))
+            self.done(QtWidgets.QDialog.Rejected)
 
     def reject(self):
         """Cancel joining the chan"""
         self.timer.stop()
         self.hide()
-        UISignalQueue.put(('updateStatusBar', _translate("newchandialog", "Chan creation / joining cancelled")))
-        self.done(QtGui.QDialog.Rejected)
+        UISignalQueue.put((
+            'updateStatusBar',
+            _translate("newchandialog", "Chan creation / joining cancelled")
+        ))
+        self.done(QtWidgets.QDialog.Rejected)