Draft example for setting a theme

Author: tleonhardt

examples/rich_theme.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+"""A simple example of setting a custom theme for a cmd2 application."""
+
+from rich.style import Style
+
+import cmd2
+import cmd2.rich_utils as ru
+from cmd2 import Cmd2Style, Color
+
+
+class ThemedApp(cmd2.Cmd):
+    """A simple cmd2 application with a custom theme."""
+
+    def __init__(self, *args, **kwargs):
+        """Initialize the application."""
+        super().__init__(*args, **kwargs)
+        self.intro = "This is a themed application. Try the 'theme_show' command."
+
+        # Create a custom theme
+        custom_theme = {
+            Cmd2Style.SUCCESS: Style(color=Color.CYAN),
+            Cmd2Style.WARNING: Style(color=Color.MAGENTA),
+            Cmd2Style.ERROR: Style(color=Color.BRIGHT_RED),
+            "argparse.args": Style(color=Color.AQUAMARINE3, underline=True),
+            "inspect.attr": Style(color=Color.DARK_GOLDENROD, bold=True),
+        }
+        ru.set_theme(custom_theme)
+
+    @cmd2.with_category("Theme Commands")
+    def do_theme_show(self, _: cmd2.Statement):
+        """Showcases the custom theme by printing messages with different styles."""
+        self.poutput("This is a basic output message.")
+        self.psuccess("This is a success message.")
+        self.warning("This is a warning message.")
+        self.error("This is an error message.")
+
+
+if __name__ == "__main__":
+    import sys
+
+    app = ThemedApp()
+    sys.exit(app.cmdloop())