change QPushButton to QDialogButtonBox so Qt can do the text translations

lubuntu-notifier.py

@@ -25,7 +25,7 @@ import apt_pkg
 from argparse import ArgumentParser
 import gettext
 
-from PyQt5.QtWidgets import (QWidget, QApplication, QLabel, QPushButton,
+from PyQt5.QtWidgets import (QWidget, QApplication, QLabel, QDialogButtonBox,
                              QHBoxLayout, QVBoxLayout, QTreeWidget,
                              QTreeWidgetItem)
 from PyQt5.QtCore import Qt
@@ -51,8 +51,8 @@ class Dialog(QWidget):
         self.depcache = apt_pkg.DepCache(self.cache)
 
         self.initUI()
-        self.upgradeBtn.clicked.connect(self.call_upgrade)
-        self.closeBtn.clicked.connect(self.call_reject)
+        self.buttonBox.rejected.connect(self.call_reject)
+        self.buttonBox.clicked.connect(self.call_upgrade)
 
     def initUI(self):
         ''' UI initialization '''
@@ -64,14 +64,13 @@ class Dialog(QWidget):
         self.tw.setHeaderLabels([_('Affected Packages')])
         self.tw.setHeaderHidden(True)
 
-        self.upgradeBtn = QPushButton("Upgrade")
-        self.closeBtn = QPushButton("Close")
+        self.buttonBox = QDialogButtonBox(QDialogButtonBox.Cancel |
+                                          QDialogButtonBox.Apply)
         text = ""
 
         hbox = QHBoxLayout()
         hbox.addStretch(1)
-        hbox.addWidget(self.upgradeBtn)
-        hbox.addWidget(self.closeBtn)
+        hbox.addWidget(self.buttonBox)
         hbox.addStretch(1)
 
         vbox = QVBoxLayout()
@@ -150,7 +149,8 @@ class Dialog(QWidget):
         ''' when close button is pressed, quit '''
         app.quit()
 
-    def call_upgrade(self):
+    def call_upgrade(self, btnClicked):
+        if(self.buttonBox.buttonRole(btnClicked) == QDialogButtonBox.ApplyRole):
             ''' starts upgrade process '''
             self.label.setText(_("Upgrading..."))
             # TODO maybe open another thread so notifier won't freeze