Set a placeholder text for cityEdit only if the user's version of Qt supports it. fixes #832

weboob/applications/qflatboob/query.py

@@ -41,6 +41,9 @@ class QueryDialog(QDialog):
         self.connect(self.ui.citiesList, SIGNAL('itemDoubleClicked(QListWidgetItem*)'), self.removeCity)
         self.connect(self.ui.buttonBox, SIGNAL('accepted()'), self.okButton)
 
+        if hasattr(self.ui.cityEdit, "setPlaceholderText"):
+            self.ui.cityEdit.setPlaceholderText("Press enter to search city")
+            
     def keyPressEvent(self, event):
         """
         Disable handler <Enter> and <Escape> to prevent closing the window.

weboob/applications/qflatboob/ui/query.ui

@@ -56,11 +56,7 @@
          <item>
           <layout class="QVBoxLayout" name="verticalLayout_3">
            <item>
-            <widget class="QLineEdit" name="cityEdit">
-             <property name="placeholderText">
-              <string>Press enter to search city</string>
-             </property>
-            </widget>
+            <widget class="QLineEdit" name="cityEdit"/>
            </item>
            <item>
             <widget class="QListWidget" name="resultsList"/>