Mercurial Repositories > MQTT Monitor / file diff

diff -r 889a7c3c0e63 -r 3737a78bb6c5 MqttMonitor/MqttConnectionOptionsDialog.py
--- a/MqttMonitor/MqttConnectionOptionsDialog.py	Wed Sep 05 19:52:30 2018 +0200
+++ b/MqttMonitor/MqttConnectionOptionsDialog.py	Thu Sep 06 19:02:53 2018 +0200
@@ -12,6 +12,8 @@
 from PyQt5.QtCore import pyqtSlot, QUuid
 from PyQt5.QtWidgets import QDialog, QDialogButtonBox, QAbstractButton
 
+from E5Gui import E5MessageBox
+
 from .Ui_MqttConnectionOptionsDialog import Ui_MqttConnectionOptionsDialog
 
 
@@ -39,6 +41,24 @@
         self.__client = client
         
         self.__populateDefaults(options=options)
+        
+        self.__updateOkButton()
+    
+    def __updateOkButton(self):
+        """
+        Private method to update the enabled state of the OK button.
+        """
+        if self.clientIdEdit.text() == "" and \
+                not self.cleanSessionCheckBox.isChecked():
+            enable = False
+            E5MessageBox.critical(
+                self,
+                self.tr("Invalid Connection Parameters"),
+                self.tr("""An empty Client ID requires a clean session."""))
+        else:
+            enable = True
+        
+        self.buttonBox.button(QDialogButtonBox.Ok).setEnabled(enable)
     
     @pyqtSlot()
     def on_generateIdButton_clicked(self):
@@ -110,3 +130,23 @@
             "WillQos": self.willQosSpinBox.value(),
             "WillRetain": self.willRetainCheckBox.isChecked(),
         }
+    
+    @pyqtSlot(str)
+    def on_clientIdEdit_textChanged(self, clientId):
+        """
+        Private slot handling a change of the client ID string.
+        
+        @param clientId client ID
+        @type str
+        """
+        self.__updateOkButton()
+    
+    @pyqtSlot(bool)
+    def on_cleanSessionCheckBox_clicked(self, checked):
+        """
+        Private slot to handle a change of the clean session selection.
+        
+        @param checked current state of the clean session selection
+        @type bool
+        """
+        self.__updateOkButton()