Mercurial Repositories > MQTT Monitor / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MqttMonitor/MqttUserPropertiesEditor.py	Wed Jul 21 20:10:36 2021 +0200
@@ -0,0 +1,104 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2021 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing an editor for MQTT v5 user properties.
+"""
+
+from PyQt6.QtCore import pyqtSlot
+from PyQt6.QtWidgets import QDialog, QTableWidgetItem
+
+from .Ui_MqttUserPropertiesEditor import Ui_MqttUserPropertiesEditor
+
+import UI.PixmapCache
+
+
+class MqttUserPropertiesEditor(QDialog, Ui_MqttUserPropertiesEditor):
+    """
+    Class implementing an editor for MQTT v5 user properties.
+    """
+    def __init__(self, header, properties, parent=None):
+        """
+        Constructor
+        
+        @param header text to be shown in the dialog header label
+        @type  str
+        @param properties list of defined user properties
+        @type list of tuple of (str, str)
+        @param parent reference to the parent widget (defaults to None)
+        @type QWidget (optional)
+        """
+        super().__init__(parent)
+        self.setupUi(self)
+        
+        self.addButton.setIcon(UI.PixmapCache.getIcon("plus"))
+        self.deleteButton.setIcon(UI.PixmapCache.getIcon("minus"))
+        self.clearButton.setIcon(UI.PixmapCache.getIcon("editDelete"))
+        
+        self.headerLabel.setText(header)
+        
+        if properties:
+            self.propertiesTable.setRowCount(len(properties))
+            for row, (key, value) in enumerate(properties):
+                self.propertiesTable.setItem(row, 0, QTableWidgetItem(key))
+                self.propertiesTable.setItem(row, 1, QTableWidgetItem(value))
+        
+        self.deleteButton.setEnabled(False)
+    
+    @pyqtSlot()
+    def on_propertiesTable_itemSelectionChanged(self):
+        """
+        Private slot to handle the selection of rows.
+        """
+        self.deleteButton.setEnabled(
+            bool(self.propertiesTable.selectedItems()))
+    
+    @pyqtSlot()
+    def on_addButton_clicked(self):
+        """
+        Private slot to add a row to the table.
+        """
+        self.propertiesTable.setRowCount(self.propertiesTable.rowCount() + 1)
+        self.propertiesTable.setCurrentCell(
+            self.propertiesTable.rowCount() - 1, 0)
+    
+    @pyqtSlot()
+    def on_deleteButton_clicked(self):
+        """
+        Private slot to delete the selected rows.
+        """
+        selectedRanges = self.propertiesTable.selectedRanges()
+        selectedRows = [(r.bottomRow(), r.topRow()) for r in selectedRanges]
+        for bottomRow, topRow in sorted(selectedRows, reverse=True):
+            for row in range(bottomRow, topRow - 1, -1):
+                self.propertiesTable.removeRow(row)
+    
+    @pyqtSlot()
+    def on_clearButton_clicked(self):
+        """
+        Private slot to delete all properties.
+        """
+        self.propertiesTable.clearContents()
+        self.propertiesTable.setRowCount(10)
+        self.propertiesTable.setCurrentCell(0, 0)
+    
+    def getProperties(self):
+        """
+        Public method to get the list of defined user properties.
+        
+        @return list of defined user properties
+        @rtype list of tuple of (str, str)
+        """
+        properties = []
+        
+        for row in range(self.propertiesTable.rowCount()):
+            keyItem = self.propertiesTable.item(row, 0)
+            key = keyItem.text() if keyItem else ""
+            if key:
+                valueItem = self.propertiesTable.item(row, 1)
+                value = valueItem.text() if valueItem else ""
+                properties.append((key, value))
+        
+        return properties