1 files changed, 55 insertions, 0 deletions
diff --git a/examples/serialbus/can/bitratebox.py b/examples/serialbus/can/bitratebox.py
new file mode 100644
index 000000000..68c70baac
--- /dev/null
+++ b/examples/serialbus/can/bitratebox.py
@@ -0,0 +1,55 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+from PySide6.QtWidgets import QComboBox
+from PySide6.QtGui import QIntValidator
+from PySide6.QtCore import Slot
+
+
+class BitRateBox(QComboBox):
+
+    def __init__(self, parent):
+        super().__init__(parent)
+        self.m_isFlexibleDataRateEnabled = False
+        self.m_customSpeedValidator = None
+        self.m_customSpeedValidator = QIntValidator(0, 1000000, self)
+        self.fill_bit_rates()
+        self.currentIndexChanged.connect(self.check_custom_speed_policy)
+
+    def bit_rate(self):
+        index = self.currentIndex()
+        if index == self.count() - 1:
+            return int(self.currentText)
+        return int(self.itemData(index))
+
+    def is_flexible_data_rate_enabled(self):
+        return self.m_isFlexibleDataRateEnabled
+
+    def set_flexible_date_rate_enabled(self, enabled):
+        self.m_isFlexibleDataRateEnabled = enabled
+        self.m_customSpeedValidator.setTop(10000000 if enabled else 1000000)
+        self.fill_bit_rates()
+
+    @Slot(int)
+    def check_custom_speed_policy(self, idx):
+        is_custom_speed = not self.itemData(idx)
+        self.setEditable(is_custom_speed)
+        if is_custom_speed:
+            self.clearEditText()
+            self.lineEdit().setValidator(self.m_customSpeedValidator)
+
+    def fill_bit_rates(self):
+        rates = [10000, 20000, 50000, 100000, 125000, 250000, 500000,
+                 800000, 1000000]
+        data_rates = [2000000, 4000000, 8000000]
+
+        self.clear()
+        for rate in rates:
+            self.addItem(f"{rate}", rate)
+
+        if self.is_flexible_data_rate_enabled():
+            for rate in data_rates:
+                self.addItem(f"{rate}", rate)
+
+        self.addItem("Custom")
+        self.setCurrentIndex(6)  # default is 500000 bits/sec