Library: Port 'Level Bars' to Python

src/Library/demos/Level Bars/main.py

@@ -0,0 +1,47 @@
+import workbench
+import math
+
+bar_continuous = workbench.builder.get_object("bar_continuous")
+
+bar_continuous.add_offset_value("full", 100)
+bar_continuous.add_offset_value("half", 50)
+bar_continuous.add_offset_value("low", 25)
+
+bar_discrete = workbench.builder.get_object("bar_discrete")
+
+bar_discrete.add_offset_value("very-weak", 1)
+bar_discrete.add_offset_value("weak", 2)
+bar_discrete.add_offset_value("moderate", 4)
+bar_discrete.add_offset_value("strong", 6)
+
+entry = workbench.builder.get_object("entry")
+label_strength = workbench.builder.get_object("label_strength")
+
+
+# This is not a secure way to estimate password strength
+# Use appropriate solutions instead
+# such as https://github.com/dropbox/zxcvbn
+def estimate_password_strength(_entry, _text):
+    level = min(math.ceil(len(entry.get_text()) / 2), 6)
+
+    match level:
+        case 1:
+            label_strength.set_label("Very Weak")
+            label_strength.set_css_classes(["very-weak-label"])
+        case 2:
+            label_strength.set_label("Weak")
+            label_strength.set_css_classes(["weak-label"])
+        case 3 | 4:
+            label_strength.set_label("Moderate")
+            label_strength.set_css_classes(["moderate-label"])
+        case 5 | 6:
+            label_strength.set_label("Strong")
+            label_strength.set_css_classes(["strong-label"])
+        case _:
+            label_strength.set_label("")
+            label_strength.set_css_classes([])
+
+    bar_discrete.set_value(level)
+
+
+entry.connect("notify::text", estimate_password_strength)